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Merge pull request #507 from mkovatsc/coap-18

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Erbium CoAP cleanup for Proposed Standard version
This commit is contained in:
Nicolas Tsiftes 2014-05-22 08:31:29 +02:00
commit 386ec61311
93 changed files with 6814 additions and 13553 deletions
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1
apps/er-coap-03/Makefile.er-coap-03
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er-coap-03_src = er-coap-03-engine.c er-coap-03.c er-coap-03-transactions.c er-coap-03-observing.c

559
apps/er-coap-03/er-coap-03-engine.c
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-03-engine.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#define PRINTBITS(buf,len) { \
int i,j=0; \
for (i=0; i<len; ++i) { \
for (j=7; j>=0; --j) { \
PRINTF("%c", (((char *)buf)[i] & 1<<j) ? '1' : '0'); \
} \
PRINTF(" "); \
} \
}
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#define PRINTBITS(buf,len)
#endif
PROCESS(coap_receiver, "CoAP Receiver");
/*-----------------------------------------------------------------------------------*/
/*- Constants -----------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
const char* error_messages[] = {
"",
/* Memory errors */
"Transaction buffer allocation failed",
"Memory boundary exceeded",
/* CoAP errors */
"Request has unknown critical option", /*FIXME which one? */
"Packet could not be serialized"
};
/*-----------------------------------------------------------------------------------*/
/*- Variables -----------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
static service_callback_t service_cbk = NULL;
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
static
int
handle_incoming_data(void)
{
int error = NO_ERROR;
PRINTF("handle_incoming_data(): received uip_datalen=%u \n",(uint16_t)uip_datalen());
if (uip_newdata()) {
PRINTF("receiving UDP datagram from: ");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(":%u\n Length: %u\n Data: ", uip_ntohs(UIP_UDP_BUF->srcport), uip_datalen() );
PRINTBITS(uip_appdata, uip_datalen());
PRINTF("\n");
coap_packet_t message[1];
coap_transaction_t *transaction = NULL;
error = coap_parse_message(message, uip_appdata, uip_datalen());
if (error==NO_ERROR)
{
/*TODO duplicates suppression, if required */
PRINTF(" Parsed: v %u, t %u, oc %u, c %u, tid %u\n", message->version, message->type, message->option_count, message->code, message->tid);
PRINTF(" URL: %.*s\n", message->uri_path_len, message->uri_path);
PRINTF(" Payload: %.*s\n", message->payload_len, message->payload);
/* Handle requests. */
if (message->code >= COAP_GET && message->code <= COAP_DELETE)
{
/* Use transaction buffer for response to confirmable request. */
if ( (transaction = coap_new_transaction(message->tid, &UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport)) )
{
uint32_t block_num = 0;
uint16_t block_size = REST_MAX_CHUNK_SIZE;
uint32_t block_offset = 0;
int32_t new_offset = 0;
/* prepare response */
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
if (message->type==COAP_TYPE_CON)
{
/* Reliable CON requests are answered with an ACK. */
coap_init_message(response, COAP_TYPE_ACK, OK_200, message->tid);
}
else
{
/* Unreliable NON requests are answered with a NON as well. */
coap_init_message(response, COAP_TYPE_NON, OK_200, coap_get_tid());
}
/* resource handlers must take care of different handling (e.g., TOKEN_OPTION_REQUIRED_240) */
if (IS_OPTION(message, COAP_OPTION_TOKEN))
{
coap_set_header_token(response, message->token, message->token_len);
SET_OPTION(response, COAP_OPTION_TOKEN);
}
/* get offset for blockwise transfers */
if (coap_get_header_block(message, &block_num, NULL, &block_size, &block_offset))
{
PRINTF("Blockwise: block request %lu (%u/%u) @ %lu bytes\n", block_num, block_size, REST_MAX_CHUNK_SIZE, block_offset);
block_size = MIN(block_size, REST_MAX_CHUNK_SIZE);
new_offset = block_offset;
}
/*------------------------------------------*/
/* call application-specific handler */
/*------------------------------------------*/
if (service_cbk) {
service_cbk(message, response, transaction->packet+COAP_MAX_HEADER_SIZE, block_size, &new_offset);
}
/*------------------------------------------*/
/* apply blockwise transfers */
if ( IS_OPTION(message, COAP_OPTION_BLOCK) )
{
/* unchanged new_offset indicates that resource is unaware of blockwise transfer */
if (new_offset==block_offset)
{
PRINTF("Blockwise: unaware resource with payload length %u/%u\n", response->payload_len, block_size);
if (block_offset >= response->payload_len)
{
response->code = BAD_REQUEST_400;
coap_set_payload(response, (uint8_t*)"Block out of scope", 18);
}
else
{
coap_set_header_block(response, block_num, response->payload_len - block_offset > block_size, block_size);
coap_set_payload(response, response->payload+block_offset, MIN(response->payload_len - block_offset, block_size));
} /* if (valid offset) */
}
else
{
/* resource provides chunk-wise data */
PRINTF("Blockwise: blockwise resource, new offset %ld\n", new_offset);
coap_set_header_block(response, block_num, new_offset!=-1 || response->payload_len > block_size, block_size);
if (response->payload_len > block_size) coap_set_payload(response, response->payload, block_size);
} /* if (resource aware of blockwise) */
}
else if (new_offset!=0)
{
PRINTF("Blockwise: no block option for blockwise resource, using block size %u\n", REST_MAX_CHUNK_SIZE);
coap_set_header_block(response, 0, new_offset!=-1, REST_MAX_CHUNK_SIZE);
coap_set_payload(response, response->payload, MIN(response->payload_len, REST_MAX_CHUNK_SIZE));
} /* if (blockwise request) */
if ((transaction->packet_len = coap_serialize_message(response, transaction->packet))==0)
{
error = PACKET_SERIALIZATION_ERROR;
}
} else {
error = MEMORY_ALLOCATION_ERROR;
}
}
else
{
/* Responses */
coap_transaction_t *t;
if (message->type==COAP_TYPE_ACK)
{
PRINTF("Received ACK\n");
}
else if (message->type==COAP_TYPE_RST)
{
PRINTF("Received RST\n");
/* Cancel possible subscriptions. */
if (IS_OPTION(message, COAP_OPTION_TOKEN))
{
PRINTF(" Token 0x%02X%02X\n", message->token[0], message->token[1]);
coap_remove_observer_by_token(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, message->token, message->token_len);
}
}
if ( (t = coap_get_transaction_by_tid(message->tid)) )
{
/* Free transaction memory before callback, as it may create a new transaction. */
restful_response_handler callback = t->callback;
void *callback_data = t->callback_data;
coap_clear_transaction(t);
/* Check if someone registered for the response */
if (callback) {
callback(callback_data, message);
}
} /* if (transaction) */
}
} /* if (parsed correctly) */
if (error==NO_ERROR) {
if (transaction) coap_send_transaction(transaction);
}
else
{
PRINTF("ERROR %u: %s\n", error, error_messages[error]);
/* reuse input buffer */
coap_init_message(message, COAP_TYPE_ACK, INTERNAL_SERVER_ERROR_500, message->tid);
coap_set_payload(message, (uint8_t *) error_messages[error], strlen(error_messages[error]));
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, uip_appdata, coap_serialize_message(message, uip_appdata));
}
} /* if (new data) */
return error;
}
/*-----------------------------------------------------------------------------------*/
void
coap_receiver_init()
{
process_start(&coap_receiver, NULL);
}
/*-----------------------------------------------------------------------------------*/
void
coap_set_service_callback(service_callback_t callback)
{
service_cbk = callback;
}
/*-----------------------------------------------------------------------------------*/
rest_resource_flags_t
coap_get_rest_method(void *packet)
{
return (rest_resource_flags_t)(1 << (((coap_packet_t *)packet)->code - 1));
}
/*-----------------------------------------------------------------------------------*/
int
coap_set_rest_status(void *packet, unsigned int code)
{
if (code <= 0xFF)
{
((coap_packet_t *)packet)->code = (uint8_t) code;
return 1;
}
else
{
return 0;
}
}
/*-----------------------------------------------------------------------------------*/
/*- Server part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
/* The discover resource should be included when using CoAP. */
RESOURCE(well_known_core, METHOD_GET, ".well-known/core", "");
void
well_known_core_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* Response might be NULL for non-confirmable requests. */
if (response)
{
size_t strpos = 0;
size_t bufpos = 0;
resource_t* resource = NULL;
for (resource = (resource_t*)list_head(rest_get_resources()); resource; resource = resource->next)
{
strpos += snprintf((char *) buffer + bufpos, REST_MAX_CHUNK_SIZE - bufpos + 1,
"</%s>%s%s%s",
resource->url,
resource->attributes[0] ? ";" : "",
resource->attributes,
resource->next ? "," : "" );
PRINTF("discover: %s\n", resource->url);
if (strpos <= *offset)
{
/* Discard output before current block */
PRINTF(" if %d <= %ld B\n", strpos, *offset);
PRINTF(" %s\n", buffer);
bufpos = 0;
}
else /* (strpos > *offset) */
{
/* output partly in block */
size_t len = MIN(strpos - *offset, preferred_size);
PRINTF(" el %d/%d @ %ld B\n", len, preferred_size, *offset);
/* Block might start in the middle of the output; align with buffer start. */
if (bufpos == 0)
{
memmove(buffer, buffer+strlen((char *)buffer)-strpos+*offset, len);
}
bufpos = len;
PRINTF(" %s\n", buffer);
if (bufpos >= preferred_size)
{
break;
}
}
}
if (bufpos>0) {
coap_set_payload(response, buffer, bufpos );
coap_set_header_content_type(response, APPLICATION_LINK_FORMAT);
}
else
{
coap_set_rest_status(response, BAD_REQUEST_400);
coap_set_payload(response, (uint8_t*)"Block out of scope", 18);
}
if (resource==NULL) {
*offset = -1;
}
else
{
*offset += bufpos;
}
}
}
/*-----------------------------------------------------------------------------------*/
PROCESS_THREAD(coap_receiver, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting CoAP-03 receiver...\n");
rest_activate_resource(&resource_well_known_core);
coap_register_as_transaction_handler();
coap_init_connection(SERVER_LISTEN_PORT);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
handle_incoming_data();
} else if (ev == PROCESS_EVENT_TIMER) {
/* retransmissions are handled here */
coap_check_transactions();
}
} /* while (1) */
PROCESS_END();
}
/*-----------------------------------------------------------------------------------*/
/*- Client part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
void blocking_request_callback(void *callback_data, void *response) {
struct request_state_t *state = (struct request_state_t *) callback_data;
state->response = (coap_packet_t*) response;
process_poll(state->process);
}
/*-----------------------------------------------------------------------------------*/
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback)) {
PT_BEGIN(&state->pt);
static uint8_t more;
static uint32_t res_block;
static uint8_t block_error;
state->block_num = 0;
state->response = NULL;
state->process = PROCESS_CURRENT();
more = 0;
res_block = 0;
block_error = 0;
do {
request->tid = coap_get_tid();
if ((state->transaction = coap_new_transaction(request->tid, remote_ipaddr, remote_port)))
{
state->transaction->callback = blocking_request_callback;
state->transaction->callback_data = state;
if (state->block_num>0)
{
coap_set_header_block(request, state->block_num, 0, REST_MAX_CHUNK_SIZE);
}
state->transaction->packet_len = coap_serialize_message(request, state->transaction->packet);
coap_send_transaction(state->transaction);
PRINTF("Requested #%lu (TID %u)\n", state->block_num, request->tid);
PT_YIELD_UNTIL(&state->pt, ev == PROCESS_EVENT_POLL);
if (!state->response)
{
PRINTF("Server not responding\n");
PT_EXIT(&state->pt);
}
coap_get_header_block(state->response, &res_block, &more, NULL, NULL);
PRINTF("Received #%lu%s (%u bytes)\n", res_block, more ? "+" : "", state->response->payload_len);
if (res_block==state->block_num)
{
request_callback(state->response);
++(state->block_num);
}
else
{
PRINTF("WRONG BLOCK %lu/%lu\n", res_block, state->block_num);
++block_error;
}
}
else
{
PRINTF("Could not allocate transaction buffer");
PT_EXIT(&state->pt);
}
} while (more && block_error<COAP_MAX_ATTEMPTS);
PT_END(&state->pt);
}
/*-----------------------------------------------------------------------------------*/
/*- Engine Interface ----------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
const struct rest_implementation coap_rest_implementation = {
"CoAP-03",
coap_receiver_init,
coap_set_service_callback,
coap_get_header_uri_path,
coap_set_header_uri_path,
coap_get_rest_method,
coap_set_rest_status,
coap_get_header_content_type,
coap_set_header_content_type,
NULL,
NULL,
NULL,
coap_get_header_max_age,
coap_set_header_max_age,
coap_set_header_etag,
NULL,
NULL,
coap_get_header_uri_host,
coap_set_header_location,
coap_get_payload,
coap_set_payload,
coap_get_header_uri_query,
coap_get_query_variable,
coap_get_post_variable,
coap_notify_observers,
(restful_post_handler) coap_observe_handler,
NULL,
NULL,
{
OK_200,
CREATED_201,
OK_200,
OK_200,
NOT_MODIFIED_304,
BAD_REQUEST_400,
METHOD_NOT_ALLOWED_405,
BAD_REQUEST_400,
METHOD_NOT_ALLOWED_405,
NOT_FOUND_404,
METHOD_NOT_ALLOWED_405,
UNSUPPORTED_MEDIA_TYPE_415,
BAD_REQUEST_400,
UNSUPPORTED_MEDIA_TYPE_415,
INTERNAL_SERVER_ERROR_500,
CRITICAL_OPTION_NOT_SUPPORTED,
BAD_GATEWAY_502,
SERVICE_UNAVAILABLE_503,
GATEWAY_TIMEOUT_504,
INTERNAL_SERVER_ERROR_500
},
{
TEXT_PLAIN,
TEXT_XML,
TEXT_CSV,
TEXT_HTML,
IMAGE_GIF,
IMAGE_JPEG,
IMAGE_PNG,
IMAGE_TIFF,
AUDIO_RAW,
VIDEO_RAW,
APPLICATION_LINK_FORMAT,
APPLICATION_XML,
APPLICATION_OCTET_STREAM,
APPLICATION_RDF_XML,
APPLICATION_SOAP_XML,
APPLICATION_ATOM_XML,
APPLICATION_XMPP_XML,
APPLICATION_EXI,
APPLICATION_FASTINFOSET,
APPLICATION_SOAP_FASTINFOSET,
APPLICATION_JSON,
APPLICATION_OCTET_STREAM
}
};

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apps/er-coap-03/er-coap-03-observing.c
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@ -1,207 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-03-observing.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(observers_memb, coap_observer_t, COAP_MAX_OBSERVERS);
LIST(observers_list);
/*-----------------------------------------------------------------------------------*/
coap_observer_t *
coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url)
{
coap_observer_t *o = memb_alloc(&observers_memb);
if (o)
{
o->url = url;
uip_ipaddr_copy(&o->addr, addr);
o->port = port;
o->token_len = token_len;
memcpy(o->token, token, token_len);
stimer_set(&o->refresh_timer, COAP_OBSERVING_REFRESH_INTERVAL);
PRINTF("Adding observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
list_add(observers_list, o);
}
return o;
}
/*-----------------------------------------------------------------------------------*/
void
coap_remove_observer(coap_observer_t *o)
{
PRINTF("Removing observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
memb_free(&observers_memb, o);
list_remove(observers_list, o);
}
int
coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check Port %u\n", port);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check Token 0x%02X%02X\n", token[0], token[1]);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && memcmp(obs->token, token, token_len)==0)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*-----------------------------------------------------------------------------------*/
void
coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification)
{
coap_packet_t *const coap_res = (coap_packet_t *) notification;
coap_observer_t* obs = NULL;
uint8_t preferred_type = coap_res->type;
PRINTF("Observing: Notification from %s\n", resource->url);
/* Iterate over observers. */
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
if (obs->url==resource->url) /* using RESOURCE url pointer as handle */
{
coap_transaction_t *transaction = NULL;
/*TODO implement special transaction for CON, sharing the same buffer to allow for more observers. */
if ( (transaction = coap_new_transaction(coap_get_tid(), &obs->addr, obs->port)) )
{
PRINTF(" Observer ");
PRINT6ADDR(&obs->addr);
PRINTF(":%u\n", obs->port);
/* Prepare response */
coap_res->tid = transaction->tid;
coap_set_header_observe(coap_res, obs_counter);
coap_set_header_token(coap_res, obs->token, obs->token_len);
/* Use CON to check whether client is still there/interested after COAP_OBSERVING_REFRESH_INTERVAL. */
if (stimer_expired(&obs->refresh_timer))
{
PRINTF(" Refreshing with CON\n");
coap_res->type = COAP_TYPE_CON;
stimer_restart(&obs->refresh_timer);
}
else
{
coap_res->type = preferred_type;
}
transaction->packet_len = coap_serialize_message(coap_res, transaction->packet);
coap_send_transaction(transaction);
}
}
}
}
/*-----------------------------------------------------------------------------------*/
void
coap_observe_handler(resource_t *resource, void *request, void *response)
{
static char content[26];
if (response && ((coap_packet_t *)response)->code<128) /* response without error code */
{
if (IS_OPTION((coap_packet_t *)request, COAP_OPTION_OBSERVE))
{
if (IS_OPTION((coap_packet_t *)request, COAP_OPTION_TOKEN))
{
if (coap_add_observer(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, ((coap_packet_t *)request)->token, ((coap_packet_t *)request)->token_len, resource->url))
{
coap_set_header_observe(response, 0);
coap_set_payload(response, (uint8_t *)content, snprintf(content, sizeof(content), "Added as observer %u/%u", list_length(observers_list), COAP_MAX_OBSERVERS));
}
else
{
((coap_packet_t *)response)->code = SERVICE_UNAVAILABLE_503;
coap_set_payload(response, (uint8_t *)"Too many observers", 18);
} /* if (added observer) */
}
else /* if (token) */
{
((coap_packet_t *)response)->code = TOKEN_OPTION_REQUIRED;
coap_set_payload(response, (uint8_t *)"Observing requires token", 24);
} /* if (token) */
}
else /* if (observe) */
{
/* Remove client if it is currently observing. */
coap_remove_observer_by_client(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport);
} /* if (observe) */
}
}

77
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@ -1,77 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_OBSERVING_H_
#define COAP_OBSERVING_H_
#include "sys/stimer.h"
#include "er-coap-03.h"
#include "er-coap-03-transactions.h"
#ifndef COAP_MAX_OBSERVERS
#define COAP_MAX_OBSERVERS 4
#endif /* COAP_MAX_OBSERVERS */
/* Interval in seconds in which NON notifies are changed to CON notifies to check client. */
#define COAP_OBSERVING_REFRESH_INTERVAL 60
#if COAP_MAX_OPEN_TRANSACTIONS<COAP_MAX_OBSERVERS
#warning "COAP_MAX_OPEN_TRANSACTIONS smaller than COAP_MAX_OBSERVERS: cannot handle CON notifications"
#endif
typedef struct coap_observer {
struct coap_observer *next; /* for LIST */
const char *url;
uip_ipaddr_t addr;
uint16_t port;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
struct stimer refresh_timer;
} coap_observer_t;
list_t coap_get_observers(void);
coap_observer_t *coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url);
void coap_remove_observer(coap_observer_t *o);
int coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port);
int coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len);
void coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification);
void coap_observe_handler(resource_t *resource, void *request, void *response);
#endif /* COAP_OBSERVING_H_ */

177
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@ -1,177 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for reliable transport
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-03-transactions.h"
#include "er-coap-03-observing.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(transactions_memb, coap_transaction_t, COAP_MAX_OPEN_TRANSACTIONS);
LIST(transactions_list);
static struct process *transaction_handler_process = NULL;
void
coap_register_as_transaction_handler()
{
transaction_handler_process = PROCESS_CURRENT();
}
coap_transaction_t *
coap_new_transaction(uint16_t tid, uip_ipaddr_t *addr, uint16_t port)
{
coap_transaction_t *t = memb_alloc(&transactions_memb);
if (t)
{
t->tid = tid;
t->retrans_counter = 0;
/* save client address */
uip_ipaddr_copy(&t->addr, addr);
t->port = port;
}
return t;
}
void
coap_send_transaction(coap_transaction_t *t)
{
PRINTF("Sending transaction %u\n", t->tid);
coap_send_message(&t->addr, t->port, t->packet, t->packet_len);
if (COAP_TYPE_CON==((COAP_HEADER_TYPE_MASK & t->packet[0])>>COAP_HEADER_TYPE_POSITION))
{
if (t->retrans_counter<COAP_MAX_RETRANSMIT)
{
PRINTF("Keeping transaction %u\n", t->tid);
/*FIXME hack, maybe there is a better way, but avoid posting everything to the process */
struct process *process_actual = PROCESS_CURRENT();
process_current = transaction_handler_process;
etimer_set(&t->retrans_timer, CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * (1<<(t->retrans_counter)));
process_current = process_actual;
list_add(transactions_list, t); /* list itself makes sure same element is not added twice */
t = NULL;
}
else
{
/* timeout */
PRINTF("Timeout\n");
restful_response_handler callback = t->callback;
void *callback_data = t->callback_data;
/* handle observers */
coap_remove_observer_by_client(&t->addr, t->port);
coap_clear_transaction(t);
if (callback) {
callback(callback_data, NULL);
}
}
}
else
{
coap_clear_transaction(t);
}
}
void
coap_clear_transaction(coap_transaction_t *t)
{
if (t)
{
PRINTF("Freeing transaction %u: %p\n", t->tid, t);
etimer_stop(&t->retrans_timer);
list_remove(transactions_list, t);
memb_free(&transactions_memb, t);
}
}
coap_transaction_t *
coap_get_transaction_by_tid(uint16_t tid)
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (t->tid==tid)
{
PRINTF("Found transaction for TID %u: %p\n", t->tid, t);
return t;
}
}
return NULL;
}
void
coap_check_transactions()
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (etimer_expired(&t->retrans_timer))
{
++(t->retrans_counter);
PRINTF("Retransmitting %u (%u)\n", t->tid, t->retrans_counter);
coap_send_transaction(t);
}
}
}

769
apps/er-coap-03/er-coap-03.c
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@ -1,769 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (draft 03)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifdef CONTIKI_TARGET_NETSIM
#include <stdio.h>
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#else
#include "contiki.h"
#include "contiki-net.h"
#include <string.h>
#include <stdio.h>
#endif
#include "er-coap-03.h"
#include "er-coap-03-transactions.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
static struct uip_udp_conn *udp_conn = NULL;
static uint16_t current_tid = 0;
/*-----------------------------------------------------------------------------------*/
/*- LOCAL HELP FUNCTIONS ------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
static
uint16_t
log_2(uint16_t value)
{
uint16_t result = 0;
do {
value = value >> 1;
result++;
} while (value);
return result ? result - 1 : result;
}
/*-----------------------------------------------------------------------------------*/
static
uint32_t
bytes_2_uint32(uint8_t *bytes, uint16_t length)
{
uint32_t var = 0;
int i = 0;
while (i<length)
{
var <<= 8;
var |= 0xFF & bytes[i++];
}
return var;
}
/*-----------------------------------------------------------------------------------*/
/* Unused in coap-03.
static
int
uint16_2_bytes(uint8_t *bytes, uint16_t var)
{
int i = 0;
if (0xFF00 & var) bytes[i++] = var>>8;
bytes[i++] = 0xFF & var;
return i;
}
*/
/*-----------------------------------------------------------------------------------*/
static
int
uint32_2_bytes(uint8_t *bytes, uint32_t var)
{
int i = 0;
if (0xFF000000 & var) bytes[i++] = (0xFF & var>>24);
if (0xFFFF0000 & var) bytes[i++] = (0xFF & var>>16);
if (0xFFFFFF00 & var) bytes[i++] = (0xFF & var>>8);
bytes[i++] = 0xFF & var;
return i;
}
/*-----------------------------------------------------------------------------------*/
static
int
coap_get_variable(const char *buffer, size_t length, const char *name, const char **output)
{
const char *start = NULL;
const char *end = NULL;
const char *value_end = NULL;
size_t name_len = 0;
/*initialize the output buffer first*/
*output = 0;
name_len = strlen(name);
end = buffer + length;
for (start = buffer; start + name_len < end; ++start){
if ((start == buffer || start[-1] == '&') && start[name_len] == '=' &&
strncmp(name, start, name_len)==0) {
/* Point start to variable value */
start += name_len + 1;
/* Point end to the end of the value */
value_end = (const char *) memchr(start, '&', end - start);
if (value_end == NULL) {
value_end = end;
}
*output = start;
return (value_end - start);
}
}
return 0;
}
/*-----------------------------------------------------------------------------------*/
/*- MEASSAGE SENDING ----------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
void
coap_init_connection(uint16_t port)
{
/* new connection with remote host */
udp_conn = udp_new(NULL, 0, NULL);
udp_bind(udp_conn, port);
PRINTF("Listening on port %u\n", uip_ntohs(udp_conn->lport));
/* Initialize transaction ID. */
current_tid = random_rand();
}
/*-----------------------------------------------------------------------------------*/
uint16_t
coap_get_tid()
{
++current_tid;
PRINTF("Get TID %u\n", current_tid);
return current_tid;
}
/*-----------------------------------------------------------------------------------*/
void
coap_send_message(uip_ipaddr_t *addr, uint16_t port, const uint8_t *data, uint16_t length)
{
/*configure connection to reply to client*/
uip_ipaddr_copy(&udp_conn->ripaddr, addr);
udp_conn->rport = port;
uip_udp_packet_send(udp_conn, data, length);
PRINTF("-sent UDP datagram------\n Length: %u\n -----------------------\n", length);
/* Restore server connection to allow data from any node */
memset(&udp_conn->ripaddr, 0, sizeof(udp_conn->ripaddr));
udp_conn->rport = 0;
}
/*-----------------------------------------------------------------------------------*/
/*- MEASSAGE PROCESSING -------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
void
coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t tid)
{
memset(packet, 0, sizeof(coap_packet_t));
((coap_packet_t *)packet)->type = type;
((coap_packet_t *)packet)->code = code;
((coap_packet_t *)packet)->tid = tid;
}
/*-----------------------------------------------------------------------------------*/
int
coap_serialize_message(void *packet, uint8_t *buffer)
{
((coap_packet_t *)packet)->buffer = buffer;
((coap_packet_t *)packet)->version = 1;
((coap_packet_t *)packet)->option_count = 0;
/* serialize options */
uint8_t *option = ((coap_packet_t *)packet)->buffer + COAP_HEADER_LEN;
size_t option_len = 0;
int index = 0;
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_CONTENT_TYPE)) {
((coap_header_option_t *)option)->s.delta = 1;
((coap_header_option_t *)option)->s.length = 1;
*(++option) = ((coap_packet_t *)packet)->content_type;
PRINTF("OPTION %u (type %u, len 1, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_CONTENT_TYPE, COAP_OPTION_CONTENT_TYPE - index);
PRINTF("Content-Type [%u]\n", ((coap_packet_t *)packet)->content_type);
index = COAP_OPTION_CONTENT_TYPE;
option += 1;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE)) {
option_len = uint32_2_bytes(option+1, ((coap_packet_t *)packet)->max_age);
((coap_header_option_t *)option)->s.delta = COAP_OPTION_MAX_AGE - index;
((coap_header_option_t *)option)->s.length = option_len;
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_MAX_AGE, option_len, COAP_OPTION_MAX_AGE - index);
PRINTF("Max-Age [%lu]\n", ((coap_packet_t *)packet)->max_age);
index = COAP_OPTION_MAX_AGE;
option += 1 + option_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG)) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_ETAG - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->etag_len;
memcpy(++option, ((coap_packet_t *)packet)->etag, ((coap_packet_t *)packet)->etag_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_ETAG, ((coap_packet_t *)packet)->etag_len, COAP_OPTION_ETAG - index);
PRINTF("ETag %u [0x%02X", ((coap_packet_t *)packet)->etag_len, ((coap_packet_t *)packet)->etag[0]); /*FIXME always prints 4 bytes */
PRINTF("%02X", ((coap_packet_t *)packet)->etag[1]);
PRINTF("%02X", ((coap_packet_t *)packet)->etag[2]);
PRINTF("%02X", ((coap_packet_t *)packet)->etag[3]);
PRINTF("]\n");
index = COAP_OPTION_ETAG;
option += ((coap_packet_t *)packet)->etag_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST)) {
if (((coap_packet_t *)packet)->uri_host_len<15) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_HOST - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_host_len;
option += 1;
} else {
((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_HOST - index;
((coap_header_option_t *)option)->s.length = 15;
((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_host_len - 15;
option += 2;
}
memcpy(option, ((coap_packet_t *)packet)->uri_host, ((coap_packet_t *)packet)->uri_host_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_HOST, ((coap_packet_t *)packet)->uri_host_len, COAP_OPTION_URI_HOST - index);
PRINTF("Uri-Auth [%.*s]\n", ((coap_packet_t *)packet)->uri_host_len, ((coap_packet_t *)packet)->uri_host);
index = COAP_OPTION_URI_HOST;
option += ((coap_packet_t *)packet)->uri_host_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH)) {
if (((coap_packet_t *)packet)->location_path_len<15) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_LOCATION_PATH - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->location_path_len;
option += 1;
} else {
((coap_header_option_t *)option)->l.delta = COAP_OPTION_LOCATION_PATH - index;
((coap_header_option_t *)option)->s.length = 15;
((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->location_path_len - 15;
option += 2;
}
memcpy(option, ((coap_packet_t *)packet)->location_path, ((coap_packet_t *)packet)->location_path_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_LOCATION_PATH, ((coap_packet_t *)packet)->location_path_len, COAP_OPTION_LOCATION_PATH - index);
PRINTF("Location [%.*s]\n", ((coap_packet_t *)packet)->location_path_len, ((coap_packet_t *)packet)->location_path);
index = COAP_OPTION_LOCATION_PATH;
option += ((coap_packet_t *)packet)->location_path_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH)) {
if (((coap_packet_t *)packet)->uri_path_len<15) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_PATH - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_path_len;
option += 1;
} else {
((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_PATH - index;
((coap_header_option_t *)option)->s.length = 15;
((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_path_len - 15;
option += 2;
}
memcpy(option, ((coap_packet_t *)packet)->uri_path, ((coap_packet_t *)packet)->uri_path_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_PATH, ((coap_packet_t *)packet)->uri_path_len, COAP_OPTION_URI_PATH - index);
PRINTF("Uri-Path [%.*s]\n", ((coap_packet_t *)packet)->uri_path_len, ((coap_packet_t *)packet)->uri_path);
index = COAP_OPTION_URI_PATH;
option += ((coap_packet_t *)packet)->uri_path_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE)) {
option_len = uint32_2_bytes(option+1, ((coap_packet_t *)packet)->observe);
((coap_header_option_t *)option)->s.delta = COAP_OPTION_OBSERVE - index;
((coap_header_option_t *)option)->s.length = option_len;
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_OBSERVE, option_len, COAP_OPTION_OBSERVE - index);
PRINTF("Observe [%lu]\n", ((coap_packet_t *)packet)->observe);
index = COAP_OPTION_OBSERVE;
option += 1 + option_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN)) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_TOKEN - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->token_len;
memcpy(++option, ((coap_packet_t *)packet)->token, ((coap_packet_t *)packet)->token_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_TOKEN, ((coap_packet_t *)packet)->token_len, COAP_OPTION_TOKEN - index);
PRINTF("Token %u [0x%02X%02X]\n", ((coap_packet_t *)packet)->token_len, ((coap_packet_t *)packet)->token[0], ((coap_packet_t *)packet)->token[1]); /*FIXME always prints 2 bytes */
index = COAP_OPTION_TOKEN;
option += ((coap_packet_t *)packet)->token_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK)) {
uint32_t block = ((coap_packet_t *)packet)->block_num << 4;
if (((coap_packet_t *)packet)->block_more) block |= 0x8;
block |= 0xF & log_2(((coap_packet_t *)packet)->block_size/16);
option_len = uint32_2_bytes(option+1, block);
((coap_header_option_t *)option)->s.delta = COAP_OPTION_BLOCK - index;
((coap_header_option_t *)option)->s.length = option_len;
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_BLOCK, option_len, COAP_OPTION_BLOCK - index);
PRINTF("Block [%lu%s (%u B/blk)]\n", ((coap_packet_t *)packet)->block_num, ((coap_packet_t *)packet)->block_more ? "+" : "", ((coap_packet_t *)packet)->block_size);
index = COAP_OPTION_BLOCK;
option += 1 + option_len;
++(((coap_packet_t *)packet)->option_count);
}
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) {
if (((coap_packet_t *)packet)->uri_query_len<15) {
((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_QUERY - index;
((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_query_len;
option += 1;
} else {
((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_QUERY - index;
((coap_header_option_t *)option)->s.length = 15;
((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_query_len - 15;
option += 2;
}
memcpy(option, ((coap_packet_t *)packet)->uri_query, ((coap_packet_t *)packet)->uri_query_len);
PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_QUERY, ((coap_packet_t *)packet)->uri_query_len, COAP_OPTION_URI_QUERY - index);
PRINTF("Uri-Query [%.*s]\n", ((coap_packet_t *)packet)->uri_query_len, ((coap_packet_t *)packet)->uri_query);
index = COAP_OPTION_URI_QUERY;
option += ((coap_packet_t *)packet)->uri_query_len;
++(((coap_packet_t *)packet)->option_count);
}
/* pack payload */
if ((option - ((coap_packet_t *)packet)->buffer)<=COAP_MAX_HEADER_SIZE)
{
memmove(option, ((coap_packet_t *)packet)->payload, ((coap_packet_t *)packet)->payload_len);
}
else
{
/* An error occured. Caller must check for !=0. */
return 0;
}
/* set header fields */
((coap_packet_t *)packet)->buffer[0] = 0x00;
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_VERSION_MASK & (((coap_packet_t *)packet)->version)<<COAP_HEADER_VERSION_POSITION;
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_TYPE_MASK & (((coap_packet_t *)packet)->type)<<COAP_HEADER_TYPE_POSITION;
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_OPTION_COUNT_MASK & (((coap_packet_t *)packet)->option_count)<<COAP_HEADER_OPTION_COUNT_POSITION;
((coap_packet_t *)packet)->buffer[1] = ((coap_packet_t *)packet)->code;
((coap_packet_t *)packet)->buffer[2] = 0xFF & (((coap_packet_t *)packet)->tid)>>8;
((coap_packet_t *)packet)->buffer[3] = 0xFF & ((coap_packet_t *)packet)->tid;
PRINTF("Serialized %u options, header len %u, payload len %u\n", ((coap_packet_t *)packet)->option_count, option - ((coap_packet_t *)packet)->buffer, ((coap_packet_t *)packet)->payload_len);
return (option - ((coap_packet_t *)packet)->buffer) + ((coap_packet_t *)packet)->payload_len; /* packet length */
}
/*-----------------------------------------------------------------------------------*/
error_t
coap_parse_message(void *packet, uint8_t *data, uint16_t data_len)
{
/* Initialize packet */
memset(packet, 0, sizeof(coap_packet_t));
/* pointer to packet bytes */
((coap_packet_t *)packet)->buffer = data;
/* parse header fields */
((coap_packet_t *)packet)->version = (COAP_HEADER_VERSION_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_VERSION_POSITION;
((coap_packet_t *)packet)->type = (COAP_HEADER_TYPE_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_TYPE_POSITION;
((coap_packet_t *)packet)->option_count = (COAP_HEADER_OPTION_COUNT_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_OPTION_COUNT_POSITION;
((coap_packet_t *)packet)->code = ((coap_packet_t *)packet)->buffer[1];
((coap_packet_t *)packet)->tid = ((coap_packet_t *)packet)->buffer[2]<<8 | ((coap_packet_t *)packet)->buffer[3];
/* parse options */
((coap_packet_t *)packet)->options = 0x0000;
coap_header_option_t *current_option = (coap_header_option_t *) (data + COAP_HEADER_LEN);
if (((coap_packet_t *)packet)->option_count) {
uint8_t option_index = 0;
uint8_t option_type = 0;
uint16_t option_len = 0;
uint8_t *option_data = NULL;
uint8_t *last_option = NULL;
for (option_index=0; option_index < ((coap_packet_t *)packet)->option_count; ++option_index) {
option_type += current_option->s.delta;
if (current_option->s.length<15) {
option_len = current_option->s.length;
option_data = ((uint8_t *) current_option) + 1;
} else {
option_len = current_option->l.length + 15;
option_data = ((uint8_t *) current_option) + 2;
}
PRINTF("OPTION %u (type %u, len %u, delta %u): ", option_index, option_type, option_len, current_option->s.delta);
SET_OPTION((coap_packet_t *)packet, option_type);
switch (option_type) {
case COAP_OPTION_CONTENT_TYPE:
((coap_packet_t *)packet)->content_type = option_data[0];
PRINTF("Content-Type [%u]\n", ((coap_packet_t *)packet)->content_type);
break;
case COAP_OPTION_MAX_AGE:
((coap_packet_t *)packet)->max_age = bytes_2_uint32(option_data, option_len);
PRINTF("Max-Age [%lu]\n", ((coap_packet_t *)packet)->max_age);
break;
case COAP_OPTION_ETAG:
((coap_packet_t *)packet)->etag_len = MIN(COAP_ETAG_LEN, option_len);
memcpy(((coap_packet_t *)packet)->etag, option_data, ((coap_packet_t *)packet)->etag_len);
PRINTF("ETag %u [0x%02X", ((coap_packet_t *)packet)->etag_len, ((coap_packet_t *)packet)->etag[0]); /*FIXME always prints 4 bytes */
PRINTF("%02X", ((coap_packet_t *)packet)->etag[1]);
PRINTF("%02X", ((coap_packet_t *)packet)->etag[2]);
PRINTF("%02X", ((coap_packet_t *)packet)->etag[3]);
PRINTF("]\n");
break;
case COAP_OPTION_URI_HOST:
((coap_packet_t *)packet)->uri_host = (char *) option_data;
((coap_packet_t *)packet)->uri_host_len = option_len;
PRINTF("Uri-Auth [%.*s]\n", ((coap_packet_t *)packet)->uri_host_len, ((coap_packet_t *)packet)->uri_host);
break;
case COAP_OPTION_LOCATION_PATH:
((coap_packet_t *)packet)->location_path = (char *) option_data;
((coap_packet_t *)packet)->location_path_len = option_len;
PRINTF("Location [%.*s]\n", ((coap_packet_t *)packet)->location_path_len, ((coap_packet_t *)packet)->location_path);
break;
case COAP_OPTION_URI_PATH:
((coap_packet_t *)packet)->uri_path = (char *) option_data;
((coap_packet_t *)packet)->uri_path_len = option_len;
PRINTF("Uri-Path [%.*s]\n", ((coap_packet_t *)packet)->uri_path_len, ((coap_packet_t *)packet)->uri_path);
break;
case COAP_OPTION_OBSERVE:
((coap_packet_t *)packet)->observe = bytes_2_uint32(option_data, option_len);
PRINTF("Observe [%lu]\n", ((coap_packet_t *)packet)->observe);
break;
case COAP_OPTION_TOKEN:
((coap_packet_t *)packet)->token_len = MIN(COAP_TOKEN_LEN, option_len);
memcpy(((coap_packet_t *)packet)->token, option_data, ((coap_packet_t *)packet)->token_len);
PRINTF("Token %u [0x%02X%02X]\n", ((coap_packet_t *)packet)->token_len, ((coap_packet_t *)packet)->token[0], ((coap_packet_t *)packet)->token[1]); /*FIXME always prints 2 bytes */
break;
case COAP_OPTION_BLOCK:
((coap_packet_t *)packet)->block_num = bytes_2_uint32(option_data, option_len);
((coap_packet_t *)packet)->block_more = (((coap_packet_t *)packet)->block_num & 0x08)>>3;
((coap_packet_t *)packet)->block_size = 16 << (((coap_packet_t *)packet)->block_num & 0x07);
((coap_packet_t *)packet)->block_offset = (((coap_packet_t *)packet)->block_num & ~0x0F)<<(((coap_packet_t *)packet)->block_num & 0x07);
((coap_packet_t *)packet)->block_num >>= 4;
PRINTF("Block [%lu%s (%u B/blk)]\n", ((coap_packet_t *)packet)->block_num, ((coap_packet_t *)packet)->block_more ? "+" : "", ((coap_packet_t *)packet)->block_size);
break;
case COAP_OPTION_NOOP:
PRINTF("Noop-Fencepost\n");
break;
case COAP_OPTION_URI_QUERY:
((coap_packet_t *)packet)->uri_query = (char *) option_data;
((coap_packet_t *)packet)->uri_query_len = option_len;
PRINTF("Uri-Query [%.*s]\n", ((coap_packet_t *)packet)->uri_query_len, ((coap_packet_t *)packet)->uri_query);
break;
default:
PRINTF("unknown (%u)\n", option_type);
if (option_type & 1)
{
return UNKNOWN_CRITICAL_OPTION;
}
}
/* terminate strings where possible */
if (last_option) {
last_option[0] = 0x00;
}
last_option = (uint8_t *) current_option;
current_option = (coap_header_option_t *) (option_data+option_len);
} /* for () */
} /* if (oc) */
((coap_packet_t *)packet)->payload = (uint8_t *) current_option;
((coap_packet_t *)packet)->payload_len = data_len - (((coap_packet_t *)packet)->payload - data);
return NO_ERROR;
}
/*-----------------------------------------------------------------------------------*/
/*- REST FRAMEWORK FUNCTIONS --------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
int
coap_get_query_variable(void *packet, const char *name, const char **output)
{
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) {
return coap_get_variable(((coap_packet_t *)packet)->uri_query, ((coap_packet_t *)packet)->uri_query_len, name, output);
}
return 0;
}
int
coap_get_post_variable(void *packet, const char *name, const char **output)
{
if (((coap_packet_t *)packet)->payload_len) {
return coap_get_variable((const char *)((coap_packet_t *)packet)->payload, ((coap_packet_t *)packet)->payload_len, name, output);
}
return 0;
}
/*-----------------------------------------------------------------------------------*/
/*- HEADER OPTION GETTERS AND SETTERS -----------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
unsigned int
coap_get_header_content_type(void *packet)
{
return ((coap_packet_t *)packet)->content_type;
}
int
coap_set_header_content_type(void *packet, unsigned int content_type)
{
((coap_packet_t *)packet)->content_type = (coap_content_type_t) content_type;
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_CONTENT_TYPE);
return 1;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_max_age(void *packet, uint32_t *age)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE)) {
*age = COAP_DEFAULT_MAX_AGE;
} else {
*age = ((coap_packet_t *)packet)->max_age;
}
return 1;
}
int
coap_set_header_max_age(void *packet, uint32_t age)
{
((coap_packet_t *)packet)->max_age = age;
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE);
return 1;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_etag(void *packet, const uint8_t **etag)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG)) return 0;
*etag = ((coap_packet_t *)packet)->etag;
return ((coap_packet_t *)packet)->etag_len;
}
int
coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len)
{
((coap_packet_t *)packet)->etag_len = MIN(COAP_ETAG_LEN, etag_len);
memcpy(((coap_packet_t *)packet)->etag, etag, ((coap_packet_t *)packet)->etag_len);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG);
return ((coap_packet_t *)packet)->etag_len;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_uri_host(void *packet, const char **host)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST)) return 0;
*host = ((coap_packet_t *)packet)->uri_host;
return ((coap_packet_t *)packet)->uri_host_len;
}
int
coap_set_header_uri_host(void *packet, const char *host)
{
((coap_packet_t *)packet)->uri_host = host;
((coap_packet_t *)packet)->uri_host_len = strlen(host);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST);
return ((coap_packet_t *)packet)->uri_host_len;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_location(void *packet, const char **location)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH)) return 0;
*location = ((coap_packet_t *)packet)->location_path;
return ((coap_packet_t *)packet)->location_path_len;
}
int
coap_set_header_location(void *packet, const char *location)
{
while (location[0]=='/') ++location;
((coap_packet_t *)packet)->location_path = location;
((coap_packet_t *)packet)->location_path_len = strlen(location);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH);
return ((coap_packet_t *)packet)->location_path_len;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_uri_path(void *packet, const char **path)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH)) return 0;
*path = ((coap_packet_t *)packet)->uri_path;
return ((coap_packet_t *)packet)->uri_path_len;
}
int
coap_set_header_uri_path(void *packet, const char *path)
{
while (path[0]=='/') ++path;
((coap_packet_t *)packet)->uri_path = path;
((coap_packet_t *)packet)->uri_path_len = strlen(path);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH);
return ((coap_packet_t *)packet)->uri_path_len;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_observe(void *packet, uint32_t *observe)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE)) return 0;
*observe = ((coap_packet_t *)packet)->observe;
return 1;
}
int
coap_set_header_observe(void *packet, uint32_t observe)
{
((coap_packet_t *)packet)->observe = observe;
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE);
return 1;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_token(void *packet, const uint8_t **token)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN)) return 0;
*token = ((coap_packet_t *)packet)->token;
return ((coap_packet_t *)packet)->token_len;
}
int
coap_set_header_token(void *packet, const uint8_t *token, size_t token_len)
{
((coap_packet_t *)packet)->token_len = MIN(COAP_TOKEN_LEN, token_len);
memcpy(((coap_packet_t *)packet)->token, token, ((coap_packet_t *)packet)->token_len);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN);
return ((coap_packet_t *)packet)->token_len;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_block(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK)) return 0;
/* pointers may be NULL to get only specific block parameters */
if (num!=NULL) *num = ((coap_packet_t *)packet)->block_num;
if (more!=NULL) *more = ((coap_packet_t *)packet)->block_more;
if (size!=NULL) *size = ((coap_packet_t *)packet)->block_size;
if (offset!=NULL) *offset = ((coap_packet_t *)packet)->block_offset;
return 1;
}
int
coap_set_header_block(void *packet, uint32_t num, uint8_t more, uint16_t size)
{
if (size<16) return 0;
if (size>2048) return 0;
if (num>0x0FFFFF) return 0;
((coap_packet_t *)packet)->block_num = num;
((coap_packet_t *)packet)->block_more = more;
((coap_packet_t *)packet)->block_size = size;
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK);
return 1;
}
/*-----------------------------------------------------------------------------------*/
int
coap_get_header_uri_query(void *packet, const char **query)
{
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) return 0;
*query = ((coap_packet_t *)packet)->uri_query;
return ((coap_packet_t *)packet)->uri_query_len;
}
int
coap_set_header_uri_query(void *packet, const char *query)
{
while (query[0]=='?') ++query;
((coap_packet_t *)packet)->uri_query = query;
((coap_packet_t *)packet)->uri_query_len = strlen(query);
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY);
return ((coap_packet_t *)packet)->uri_query_len;
}
/*-----------------------------------------------------------------------------------*/
/*- PAYLOAD -------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
int
coap_get_payload(void *packet, const uint8_t **payload)
{
if (((coap_packet_t *)packet)->payload) {
*payload = ((coap_packet_t *)packet)->payload;
return ((coap_packet_t *)packet)->payload_len;
} else {
*payload = NULL;
return 0;
}
}
int
coap_set_payload(void *packet, const void *payload, size_t length)
{
PRINTF("setting payload (%u/%u)\n", length, REST_MAX_CHUNK_SIZE);
((coap_packet_t *)packet)->payload = (uint8_t *) payload;
((coap_packet_t *)packet)->payload_len = MIN(REST_MAX_CHUNK_SIZE, length);
return ((coap_packet_t *)packet)->payload_len;
}
/*-----------------------------------------------------------------------------------*/

284
apps/er-coap-03/er-coap-03.h
View File

@ -1,284 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (draft 03)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_03_H_
#define COAP_03_H_
#include <stddef.h> /* for size_t */
#include "contiki-net.h"
#include "erbium.h"
#define COAP_DEFAULT_PORT 61616
#ifndef COAP_SERVER_PORT
#define COAP_SERVER_PORT COAP_DEFAULT_PORT
#endif
#define COAP_DEFAULT_MAX_AGE 60
#define COAP_RESPONSE_TIMEOUT 1
#define COAP_MAX_RETRANSMIT 5
#define COAP_HEADER_LEN 4 /* | oc:0xF0 type:0x0C version:0x03 | code | tid:0x00FF | tid:0xFF00 | */
#define COAP_ETAG_LEN 4 /* The maximum number of bytes for the ETag, which is 4 for coap-03 */
#define COAP_TOKEN_LEN 2 /* The maximum number of bytes for the ETag, which is 4 for coap-03 */
#define COAP_HEADER_VERSION_MASK 0xC0
#define COAP_HEADER_VERSION_POSITION 6
#define COAP_HEADER_TYPE_MASK 0x30
#define COAP_HEADER_TYPE_POSITION 4
#define COAP_HEADER_OPTION_COUNT_MASK 0x0F
#define COAP_HEADER_OPTION_COUNT_POSITION 0
#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
/*
* Conservative size limit, as not all options have to be set at the same time.
*/
/* Hdr CoT Age Tag Obs Tok Blo strings */
#define COAP_MAX_HEADER_SIZE (4 + 2 + 5 + 5 + 5 + 5 + 4 + 0)
#define COAP_MAX_PACKET_SIZE (COAP_MAX_HEADER_SIZE + REST_MAX_CHUNK_SIZE)
/* 0/14 48 for IPv6 (28 for IPv4) */
#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_IPUDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for REST_MAX_CHUNK_SIZE"
#endif
/*
* Maximum number of failed request attempts before action
*/
#ifndef COAP_MAX_ATTEMPTS
#define COAP_MAX_ATTEMPTS 4
#endif /* COAP_MAX_ATTEMPTS */
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define SET_OPTION(packet, opt) ((packet)->options |= 1<<opt)
#define IS_OPTION(packet, opt) ((packet)->options & 1<<opt)
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a) : (b))
#endif /* MIN */
/* CoAP message types */
typedef enum {
COAP_TYPE_CON, /* confirmables */
COAP_TYPE_NON, /* non-confirmables */
COAP_TYPE_ACK, /* acknowledgements */
COAP_TYPE_RST /* reset */
} coap_message_type_t;
/* CoAP request method codes */
typedef enum {
COAP_GET = 1,
COAP_POST,
COAP_PUT,
COAP_DELETE
} coap_method_t;
/* CoAP response codes */
typedef enum {
CONTINUE_100 = 40,
OK_200 = 80,
CREATED_201 = 81,
NOT_MODIFIED_304 = 124,
BAD_REQUEST_400 = 160,
NOT_FOUND_404 = 164,
METHOD_NOT_ALLOWED_405 = 165,
UNSUPPORTED_MEDIA_TYPE_415 = 175,
INTERNAL_SERVER_ERROR_500 = 200,
BAD_GATEWAY_502 = 202,
SERVICE_UNAVAILABLE_503 = 203,
GATEWAY_TIMEOUT_504 = 204,
TOKEN_OPTION_REQUIRED = 240,
HOST_REQUIRED = 241,
CRITICAL_OPTION_NOT_SUPPORTED = 242
} coap_status_t;
/* CoAP header options */
typedef enum {
COAP_OPTION_CONTENT_TYPE = 1, /* 1 B */
COAP_OPTION_MAX_AGE = 2, /* 1-4 B */
COAP_OPTION_ETAG = 4, /* 1-4 B */
COAP_OPTION_URI_HOST = 5, /* 1-270 B */
COAP_OPTION_LOCATION_PATH = 6, /* 1-270 B */
COAP_OPTION_URI_PATH = 9, /* 1-270 B */
COAP_OPTION_OBSERVE = 10, /* 0-4 B */
COAP_OPTION_TOKEN = 11, /* 1-2 B */
COAP_OPTION_BLOCK = 13, /* 1-3 B */
COAP_OPTION_NOOP = 14, /* 0 B */
COAP_OPTION_URI_QUERY = 15 /* 1-270 B */
} coap_option_t;
/* CoAP content-types */
typedef enum {
TEXT_PLAIN = 0,
TEXT_XML = 1,
TEXT_CSV = 2,
TEXT_HTML = 3,
IMAGE_GIF = 21,
IMAGE_JPEG = 22,
IMAGE_PNG = 23,
IMAGE_TIFF = 24,
AUDIO_RAW = 25,
VIDEO_RAW = 26,
APPLICATION_LINK_FORMAT = 40,
APPLICATION_XML = 41,
APPLICATION_OCTET_STREAM = 42,
APPLICATION_RDF_XML = 43,
APPLICATION_SOAP_XML = 44,
APPLICATION_ATOM_XML = 45,
APPLICATION_XMPP_XML = 46,
APPLICATION_EXI = 47,
APPLICATION_X_BXML = 48,
APPLICATION_FASTINFOSET = 49,
APPLICATION_SOAP_FASTINFOSET = 50,
APPLICATION_JSON = 51
} coap_content_type_t;
typedef union {
struct { /* 0--14 bytes options */
uint8_t length:4; /* option length in bytes (15 indicates long option format) */
uint8_t delta:4; /* option delta */
/* 0--14 bytes options */
} s;
struct { /* 15-270 bytes options */
uint16_t flag:4; /* must be 15 */
uint16_t delta:4; /* option delta */
uint16_t length:8; /* length - 15 */
} l;
} coap_header_option_t;
typedef struct {
uint8_t *buffer; /* pointer to CoAP header / incoming packet buffer / memory to serialize packet */
uint8_t version;
coap_message_type_t type;
uint8_t option_count;
uint8_t code;
uint16_t tid;
uint16_t options; /* Bitmap to check if option is set */
coap_content_type_t content_type; /* Parse options once and store; allows setting options in random order */
uint32_t max_age;
uint8_t etag_len;
uint8_t etag[COAP_ETAG_LEN];
uint8_t uri_host_len;
const char *uri_host;
uint8_t location_path_len;
const char *location_path;
uint8_t uri_path_len;
const char *uri_path;
uint32_t observe; /* 0-4 bytes for coap-03 */
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint32_t block_num;
uint8_t block_more;
uint16_t block_size;
uint32_t block_offset;
uint8_t uri_query_len;
const char *uri_query;
uint16_t payload_len;
uint8_t *payload;
} coap_packet_t;
/*error definitions*/
typedef enum
{
NO_ERROR,
/* Memory errors */
MEMORY_ALLOCATION_ERROR,
MEMORY_BOUNDARY_EXCEEDED,
/* CoAP errors */
UNKNOWN_CRITICAL_OPTION,
PACKET_SERIALIZATION_ERROR
} error_t;
void coap_init_connection(uint16_t port);
uint16_t coap_get_tid(void);
void coap_send_message(uip_ipaddr_t *addr, uint16_t port, const uint8_t *data, uint16_t length);
void coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t tid);
int coap_serialize_message(void *packet, uint8_t *buffer);
error_t coap_parse_message(void *request, uint8_t *data, uint16_t data_len);
coap_method_t coap_get_method(void *packet);
void coap_set_status(void *packet, unsigned int code);
int coap_get_query_variable(void *packet, const char *name, const char **output);
int coap_get_post_variable(void *packet, const char *name, const char **output);
unsigned int coap_get_header_content_type(void *packet);
int coap_set_header_content_type(void *packet, unsigned int content_type);
int coap_get_header_max_age(void *packet, uint32_t *age);
int coap_set_header_max_age(void *packet, uint32_t age);
int coap_get_header_etag(void *packet, const uint8_t **etag);
int coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_uri_host(void *packet, const char **host); /*CAUTION in-place string might not be 0-terminated */
int coap_set_header_uri_host(void *packet, const char *host);
int coap_get_header_location(void *packet, const char **uri); /*CAUTION in-place string might not be 0-terminated */
int coap_set_header_location(void *packet, const char *uri);
int coap_get_header_uri_path(void *packet, const char **uri); /*CAUTION in-place string might not be 0-terminated */
int coap_set_header_uri_path(void *packet, const char *uri);
int coap_get_header_observe(void *packet, uint32_t *observe);
int coap_set_header_observe(void *packet, uint32_t observe);
int coap_get_header_token(void *packet, const uint8_t **token);
int coap_set_header_token(void *packet, const uint8_t *token, size_t token_len);
int coap_get_header_block(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_uri_query(void *packet, const char **query); /*CAUTION in-place string might not be 0-terminated */
int coap_set_header_uri_query(void *packet, const char *query);
int coap_get_payload(void *packet, const uint8_t **payload);
int coap_set_payload(void *packet, const void *payload, size_t length);
#endif /* COAP_03_H_ */

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apps/er-coap-07/Makefile.er-coap-07
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@ -1 +0,0 @@
er-coap-07_src = er-coap-07-engine.c er-coap-07.c er-coap-07-transactions.c er-coap-07-observing.c er-coap-07-separate.c

612
apps/er-coap-07/er-coap-07-engine.c
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@ -1,612 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-07-engine.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#define PRINTBITS(buf,len) { \
int i,j=0; \
for (i=0; i<len; ++i) { \
for (j=7; j>=0; --j) { \
PRINTF("%c", (((char *)buf)[i] & 1<<j) ? '1' : '0'); \
} \
PRINTF(" "); \
} \
}
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#define PRINTBITS(buf,len)
#endif
PROCESS(coap_receiver, "CoAP Receiver");
/*----------------------------------------------------------------------------*/
/*- Variables ----------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static service_callback_t service_cbk = NULL;
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static
int
coap_receive(void)
{
coap_error_code = NO_ERROR;
PRINTF("handle_incoming_data(): received uip_datalen=%u \n",(uint16_t)uip_datalen());
/* Static declaration reduces stack peaks and program code size. */
static coap_packet_t message[1]; /* This way the packet can be treated as pointer as usual. */
static coap_packet_t response[1];
static coap_transaction_t *transaction = NULL;
if (uip_newdata()) {
PRINTF("receiving UDP datagram from: ");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(":%u\n Length: %u\n Data: ", uip_ntohs(UIP_UDP_BUF->srcport), uip_datalen() );
PRINTBITS(uip_appdata, uip_datalen());
PRINTF("\n");
coap_error_code = coap_parse_message(message, uip_appdata, uip_datalen());
if (coap_error_code==NO_ERROR)
{
/*TODO duplicates suppression, if required by application */
PRINTF(" Parsed: v %u, t %u, oc %u, c %u, mid %u\n", message->version, message->type, message->option_count, message->code, message->mid);
PRINTF(" URL: %.*s\n", message->uri_path_len, message->uri_path);
PRINTF(" Payload: %.*s\n", message->payload_len, message->payload);
/* Handle requests. */
if (message->code >= COAP_GET && message->code <= COAP_DELETE)
{
/* Use transaction buffer for response to confirmable request. */
if ( (transaction = coap_new_transaction(message->mid, &UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport)) )
{
uint32_t block_num = 0;
uint16_t block_size = REST_MAX_CHUNK_SIZE;
uint32_t block_offset = 0;
int32_t new_offset = 0;
/* prepare response */
if (message->type==COAP_TYPE_CON)
{
/* Reliable CON requests are answered with an ACK. */
coap_init_message(response, COAP_TYPE_ACK, CONTENT_2_05, message->mid);
}
else
{
/* Unreliable NON requests are answered with a NON as well. */
coap_init_message(response, COAP_TYPE_NON, CONTENT_2_05, coap_get_mid());
}
/* resource handlers must take care of different handling (e.g., TOKEN_OPTION_REQUIRED_240) */
if (IS_OPTION(message, COAP_OPTION_TOKEN))
{
coap_set_header_token(response, message->token, message->token_len);
SET_OPTION(response, COAP_OPTION_TOKEN);
}
/* get offset for blockwise transfers */
if (coap_get_header_block2(message, &block_num, NULL, &block_size, &block_offset))
{
PRINTF("Blockwise: block request %lu (%u/%u) @ %lu bytes\n", block_num, block_size, REST_MAX_CHUNK_SIZE, block_offset);
block_size = MIN(block_size, REST_MAX_CHUNK_SIZE);
new_offset = block_offset;
}
/* Invoke resource handler. */
if (service_cbk)
{
/* Call REST framework and check if found and allowed. */
if (service_cbk(message, response, transaction->packet+COAP_MAX_HEADER_SIZE, block_size, &new_offset))
{
if (coap_error_code==NO_ERROR)
{
/* Apply blockwise transfers. */
if ( IS_OPTION(message, COAP_OPTION_BLOCK1) && response->code<BAD_REQUEST_4_00 && !IS_OPTION(response, COAP_OPTION_BLOCK1) )
{
PRINTF("Block1 NOT IMPLEMENTED\n");
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoBlock1Support";
}
else if ( IS_OPTION(message, COAP_OPTION_BLOCK2) )
{
/* unchanged new_offset indicates that resource is unaware of blockwise transfer */
if (new_offset==block_offset)
{
PRINTF("Blockwise: unaware resource with payload length %u/%u\n", response->payload_len, block_size);
if (block_offset >= response->payload_len)
{
PRINTF("handle_incoming_data(): block_offset >= response->payload_len\n");
response->code = BAD_OPTION_4_02;
coap_set_payload(response, "BlockOutOfScope", 15); /* a const char str[] and sizeof(str) produces larger code size */
}
else
{
coap_set_header_block2(response, block_num, response->payload_len - block_offset > block_size, block_size);
coap_set_payload(response, response->payload+block_offset, MIN(response->payload_len - block_offset, block_size));
} /* if (valid offset) */
}
else
{
/* resource provides chunk-wise data */
PRINTF("Blockwise: blockwise resource, new offset %ld\n", new_offset);
coap_set_header_block2(response, block_num, new_offset!=-1 || response->payload_len > block_size, block_size);
if (response->payload_len > block_size) coap_set_payload(response, response->payload, block_size);
} /* if (resource aware of blockwise) */
}
else if (new_offset!=0)
{
PRINTF("Blockwise: no block option for blockwise resource, using block size %u\n", REST_MAX_CHUNK_SIZE);
coap_set_header_block2(response, 0, new_offset!=-1, REST_MAX_CHUNK_SIZE);
coap_set_payload(response, response->payload, MIN(response->payload_len, REST_MAX_CHUNK_SIZE));
} /* if (blockwise request) */
} /* no errors/hooks */
} /* successful service callback */
/* Serialize response. */
if (coap_error_code==NO_ERROR)
{
if ((transaction->packet_len = coap_serialize_message(response, transaction->packet))==0)
{
coap_error_code = PACKET_SERIALIZATION_ERROR;
}
}
}
else
{
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoServiceCallbck"; // no a to fit 16 bytes
} /* if (service callback) */
} else {
coap_error_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "NoFreeTraBuffer";
} /* if (transaction buffer) */
}
else
{
/* Responses */
if (message->type==COAP_TYPE_ACK)
{
PRINTF("Received ACK\n");
}
else if (message->type==COAP_TYPE_RST)
{
PRINTF("Received RST\n");
/* Cancel possible subscriptions. */
coap_remove_observer_by_mid(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, message->mid);
}
if ( (transaction = coap_get_transaction_by_mid(message->mid)) )
{
/* Free transaction memory before callback, as it may create a new transaction. */
restful_response_handler callback = transaction->callback;
void *callback_data = transaction->callback_data;
coap_clear_transaction(transaction);
/* Check if someone registered for the response */
if (callback) {
callback(callback_data, message);
}
} /* if (ACKed transaction) */
transaction = NULL;
} /* Request or Response */
} /* if (parsed correctly) */
if (coap_error_code==NO_ERROR)
{
if (transaction) coap_send_transaction(transaction);
}
else if (coap_error_code==MANUAL_RESPONSE)
{
PRINTF("Clearing transaction for manual response");
coap_clear_transaction(transaction);
}
else
{
PRINTF("ERROR %u: %s\n", coap_error_code, coap_error_message);
coap_clear_transaction(transaction);
/* Set to sendable error code. */
if (coap_error_code >= 192)
{
coap_error_code = INTERNAL_SERVER_ERROR_5_00;
}
/* Reuse input buffer for error message. */
coap_init_message(message, COAP_TYPE_ACK, coap_error_code, message->mid);
coap_set_payload(message, coap_error_message, strlen(coap_error_message));
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, uip_appdata, coap_serialize_message(message, uip_appdata));
}
} /* if (new data) */
return coap_error_code;
}
/*----------------------------------------------------------------------------*/
void
coap_receiver_init()
{
process_start(&coap_receiver, NULL);
}
/*----------------------------------------------------------------------------*/
void
coap_set_service_callback(service_callback_t callback)
{
service_cbk = callback;
}
/*----------------------------------------------------------------------------*/
rest_resource_flags_t
coap_get_rest_method(void *packet)
{
return (rest_resource_flags_t)(1 << (((coap_packet_t *)packet)->code - 1));
}
/*----------------------------------------------------------------------------*/
/*- Server part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/* The discover resource is automatically included for CoAP. */
RESOURCE(well_known_core, METHOD_GET, ".well-known/core", "ct=40");
void
well_known_core_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t strpos = 0; /* position in overall string (which is larger than the buffer) */
size_t bufpos = 0; /* position within buffer (bytes written) */
size_t tmplen = 0;
resource_t* resource = NULL;
/* For filtering. */
const char *filter = NULL;
int len = coap_get_query_variable(request, "rt", &filter);
char *rt = NULL;
for (resource = (resource_t*)list_head(rest_get_resources()); resource; resource = resource->next)
{
/* Filtering */
if (len && ((rt=strstr(resource->attributes, "rt=\""))==NULL || memcmp(rt+4, filter, len-1)!=0 || (filter[len-1]!='*' && (filter[len-1]!=rt[3+len] || rt[4+len]!='"'))))
{
continue;
}
PRINTF("res: /%s (%p)\npos: s%d, o%d, b%d\n", resource->url, resource, strpos, *offset, bufpos);
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '<';
}
++strpos;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '/';
}
++strpos;
tmplen = strlen(resource->url);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->url + ((*offset-(int32_t)strpos > 0) ? (*offset-(int32_t)strpos) : 0));
/* minimal-net requires these casts */
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '>';
}
++strpos;
if (resource->attributes[0])
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ';';
}
++strpos;
tmplen = strlen(resource->attributes);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->attributes + (*offset-(int32_t)strpos > 0 ? *offset-(int32_t)strpos : 0));
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
}
if (resource->next)
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ',';
}
++strpos;
}
/* buffer full, but resource not completed yet; or: do not break if resource exactly fills buffer. */
if (bufpos >= preferred_size && strpos-bufpos > *offset)
{
PRINTF("res: BREAK at %s (%p)\n", resource->url, resource);
break;
}
}
if (bufpos>0) {
PRINTF("BUF %d: %.*s\n", bufpos, bufpos, (char *) buffer);
coap_set_payload(response, buffer, bufpos );
coap_set_header_content_type(response, APPLICATION_LINK_FORMAT);
}
else if (strpos>0)
{
PRINTF("well_known_core_handler(): bufpos<=0\n");
coap_set_status_code(response, BAD_OPTION_4_02);
coap_set_payload(response, "BlockOutOfScope", 15);
}
if (resource==NULL) {
PRINTF("res: DONE\n");
*offset = -1;
}
else
{
PRINTF("res: MORE at %s (%p)\n", resource->url, resource);
*offset += preferred_size;
}
}
/*----------------------------------------------------------------------------*/
PROCESS_THREAD(coap_receiver, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting CoAP-07 receiver...\n");
rest_activate_resource(&resource_well_known_core);
coap_register_as_transaction_handler();
coap_init_connection(SERVER_LISTEN_PORT);
PRINTF("Listening on port %u\n", UIP_HTONS(SERVER_LISTEN_PORT));
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
coap_receive();
} else if (ev == PROCESS_EVENT_TIMER) {
/* retransmissions are handled here */
coap_check_transactions();
}
} /* while (1) */
PROCESS_END();
}
/*----------------------------------------------------------------------------*/
/*- Client part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
void coap_blocking_request_callback(void *callback_data, void *response) {
struct request_state_t *state = (struct request_state_t *) callback_data;
state->response = (coap_packet_t*) response;
process_poll(state->process);
}
/*----------------------------------------------------------------------------*/
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback)) {
PT_BEGIN(&state->pt);
static uint8_t more;
static uint32_t res_block;
static uint8_t block_error;
state->block_num = 0;
state->response = NULL;
state->process = PROCESS_CURRENT();
more = 0;
res_block = 0;
block_error = 0;
do {
request->mid = coap_get_mid();
if ((state->transaction = coap_new_transaction(request->mid, remote_ipaddr, remote_port)))
{
state->transaction->callback = coap_blocking_request_callback;
state->transaction->callback_data = state;
if (state->block_num>0)
{
coap_set_header_block2(request, state->block_num, 0, REST_MAX_CHUNK_SIZE);
}
state->transaction->packet_len = coap_serialize_message(request, state->transaction->packet);
coap_send_transaction(state->transaction);
PRINTF("Requested #%lu (MID %u)\n", state->block_num, request->mid);
PT_YIELD_UNTIL(&state->pt, ev == PROCESS_EVENT_POLL);
if (!state->response)
{
PRINTF("Server not responding\n");
PT_EXIT(&state->pt);
}
coap_get_header_block2(state->response, &res_block, &more, NULL, NULL);
PRINTF("Received #%lu%s (%u bytes)\n", res_block, more ? "+" : "", state->response->payload_len);
if (res_block==state->block_num)
{
request_callback(state->response);
++(state->block_num);
}
else
{
PRINTF("WRONG BLOCK %lu/%lu\n", res_block, state->block_num);
++block_error;
}
}
else
{
PRINTF("Could not allocate transaction buffer");
PT_EXIT(&state->pt);
}
} while (more && block_error<COAP_MAX_ATTEMPTS);
PT_END(&state->pt);
}
/*----------------------------------------------------------------------------*/
/*- Engine Interface ---------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
const struct rest_implementation coap_rest_implementation = {
"CoAP-07",
coap_receiver_init,
coap_set_service_callback,
coap_get_header_uri_path,
coap_set_header_uri_path,
coap_get_rest_method,
coap_set_status_code,
coap_get_header_content_type,
coap_set_header_content_type,
coap_get_header_accept,
NULL,
NULL,
coap_get_header_max_age,
coap_set_header_max_age,
coap_set_header_etag,
coap_get_header_if_match,
coap_get_header_if_none_match,
coap_get_header_uri_host,
coap_set_header_location_path,
coap_get_payload,
coap_set_payload,
coap_get_header_uri_query,
coap_get_query_variable,
coap_get_post_variable,
coap_notify_observers,
(restful_post_handler) coap_observe_handler,
NULL, /* default pre-handler (set separate handler after activation if needed) */
NULL, /* default post-handler for non-observable resources */
{
CONTENT_2_05,
CREATED_2_01,
CHANGED_2_04,
DELETED_2_02,
VALID_2_03,
BAD_REQUEST_4_00,
UNAUTHORIZED_4_01,
BAD_OPTION_4_02,
FORBIDDEN_4_03,
NOT_FOUND_4_04,
METHOD_NOT_ALLOWED_4_05,
NOT_ACCEPTABLE_4_06,
REQUEST_ENTITY_TOO_LARGE_4_13,
UNSUPPORTED_MEDIA_TYPE_4_15,
INTERNAL_SERVER_ERROR_5_00,
NOT_IMPLEMENTED_5_01,
BAD_GATEWAY_5_02,
SERVICE_UNAVAILABLE_5_03,
GATEWAY_TIMEOUT_5_04,
PROXYING_NOT_SUPPORTED_5_05
},
{
TEXT_PLAIN,
TEXT_XML,
TEXT_CSV,
TEXT_HTML,
IMAGE_GIF,
IMAGE_JPEG,
IMAGE_PNG,
IMAGE_TIFF,
AUDIO_RAW,
VIDEO_RAW,
APPLICATION_LINK_FORMAT,
APPLICATION_XML,
APPLICATION_OCTET_STREAM,
APPLICATION_RDF_XML,
APPLICATION_SOAP_XML,
APPLICATION_ATOM_XML,
APPLICATION_XMPP_XML,
APPLICATION_EXI,
APPLICATION_FASTINFOSET,
APPLICATION_SOAP_FASTINFOSET,
APPLICATION_JSON,
APPLICATION_X_OBIX_BINARY
}
};

94
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_SERVER_H_
#define COAP_SERVER_H_
#if !defined(REST)
#error "Define REST to \"coap_rest_implementation\""
#endif
#include "er-coap-07.h"
#include "er-coap-07-transactions.h"
#include "er-coap-07-observing.h"
#include "er-coap-07-separate.h"
#include "pt.h"
/* Declare server process */
PROCESS_NAME(coap_receiver);
#define SERVER_LISTEN_PORT UIP_HTONS(COAP_SERVER_PORT)
typedef coap_packet_t rest_request_t;
typedef coap_packet_t rest_response_t;
extern const struct rest_implementation coap_rest_implementation;
void coap_receiver_init(void);
/*-----------------------------------------------------------------------------------*/
/*- Client part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
struct request_state_t {
struct pt pt;
struct process *process;
coap_transaction_t *transaction;
coap_packet_t *response;
uint32_t block_num;
};
typedef void (*blocking_response_handler) (void* response);
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback));
#define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \
{ \
static struct request_state_t request_state; \
PT_SPAWN(process_pt, &request_state.pt, \
coap_blocking_request(&request_state, ev, \
server_addr, server_port, \
request, chunk_handler) \
); \
}
/*-----------------------------------------------------------------------------------*/
#endif /* COAP_SERVER_H_ */

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@ -1,255 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-07-observing.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(observers_memb, coap_observer_t, COAP_MAX_OBSERVERS);
LIST(observers_list);
/*-----------------------------------------------------------------------------------*/
coap_observer_t *
coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url)
{
/* Remove existing observe relationship, if any. */
coap_remove_observer_by_url(addr, port, url);
coap_observer_t *o = memb_alloc(&observers_memb);
if (o)
{
o->url = url;
uip_ipaddr_copy(&o->addr, addr);
o->port = port;
o->token_len = token_len;
memcpy(o->token, token, token_len);
o->last_mid = 0;
stimer_set(&o->refresh_timer, COAP_OBSERVING_REFRESH_INTERVAL);
PRINTF("Adding observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
list_add(observers_list, o);
}
return o;
}
/*-----------------------------------------------------------------------------------*/
void
coap_remove_observer(coap_observer_t *o)
{
PRINTF("Removing observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
memb_free(&observers_memb, o);
list_remove(observers_list, o);
}
int
coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check client ");
PRINT6ADDR(addr);
PRINTF(":%u\n", port);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check Token 0x%02X%02X\n", token[0], token[1]);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->token_len==token_len && memcmp(obs->token, token, token_len)==0)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check URL %p\n", url);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && (obs->url==url || memcmp(obs->url, url, strlen(obs->url))==0))
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check MID %u\n", mid);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->last_mid==mid)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*-----------------------------------------------------------------------------------*/
void
coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification)
{
coap_packet_t *const coap_res = (coap_packet_t *) notification;
coap_observer_t* obs = NULL;
uint8_t preferred_type = coap_res->type;
PRINTF("Observing: Notification from %s\n", resource->url);
/* Iterate over observers. */
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
if (obs->url==resource->url) /* using RESOURCE url pointer as handle */
{
coap_transaction_t *transaction = NULL;
/*TODO implement special transaction for CON, sharing the same buffer to allow for more observers. */
if ( (transaction = coap_new_transaction(coap_get_mid(), &obs->addr, obs->port)) )
{
PRINTF(" Observer ");
PRINT6ADDR(&obs->addr);
PRINTF(":%u\n", obs->port);
/* Update last MID for RST matching. */
obs->last_mid = transaction->mid;
/* Prepare response */
coap_res->mid = transaction->mid;
coap_set_header_observe(coap_res, obs_counter);
coap_set_header_token(coap_res, obs->token, obs->token_len);
/* Use CON to check whether client is still there/interested after COAP_OBSERVING_REFRESH_INTERVAL. */
if (stimer_expired(&obs->refresh_timer))
{
PRINTF(" Refreshing with CON\n");
coap_res->type = COAP_TYPE_CON;
stimer_restart(&obs->refresh_timer);
}
else
{
coap_res->type = preferred_type;
}
transaction->packet_len = coap_serialize_message(coap_res, transaction->packet);
coap_send_transaction(transaction);
}
}
}
}
/*-----------------------------------------------------------------------------------*/
void
coap_observe_handler(resource_t *resource, void *request, void *response)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
coap_packet_t *const coap_res = (coap_packet_t *) response;
static char content[16];
if (coap_req->code==COAP_GET && coap_res->code<128) /* GET request and response without error code */
{
if (IS_OPTION(coap_req, COAP_OPTION_OBSERVE))
{
if (coap_add_observer(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, coap_req->token, coap_req->token_len, resource->url))
{
coap_set_header_observe(coap_res, 0);
/*
* For demonstration purposes only. A subscription should return the same representation as a normal GET.
* TODO: Comment the following line for any real application.
*/
coap_set_payload(coap_res, content, snprintf(content, sizeof(content), "Added %u/%u", list_length(observers_list), COAP_MAX_OBSERVERS));
}
else
{
coap_res->code = SERVICE_UNAVAILABLE_5_03;
coap_set_payload(coap_res, "TooManyObservers", 16);
} /* if (added observer) */
}
else /* if (observe) */
{
/* Remove client if it is currently observing. */
coap_remove_observer_by_url(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, resource->url);
} /* if (observe) */
}
}

83
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_OBSERVING_H_
#define COAP_OBSERVING_H_
#include "sys/stimer.h"
#include "er-coap-07.h"
#include "er-coap-07-transactions.h"
#ifndef COAP_MAX_OBSERVERS
#define COAP_MAX_OBSERVERS 4
#endif /* COAP_MAX_OBSERVERS */
/* Interval in seconds in which NON notifies are changed to CON notifies to check client. */
#define COAP_OBSERVING_REFRESH_INTERVAL 60
#if COAP_MAX_OPEN_TRANSACTIONS<COAP_MAX_OBSERVERS
#warning "COAP_MAX_OPEN_TRANSACTIONS smaller than COAP_MAX_OBSERVERS: cannot handle CON notifications"
#endif
typedef struct coap_observer {
struct coap_observer *next; /* for LIST */
const char *url;
uip_ipaddr_t addr;
uint16_t port;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint16_t last_mid;
struct stimer refresh_timer;
} coap_observer_t;
list_t coap_get_observers(void);
coap_observer_t *coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url);
void coap_remove_observer(coap_observer_t *o);
int coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port);
int coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len);
int coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url);
int coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid);
void coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification);
void coap_observe_handler(resource_t *resource, void *request, void *response);
#endif /* COAP_OBSERVING_H_ */

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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for separate responses
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-07-separate.h"
#include "er-coap-07-transactions.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
/*----------------------------------------------------------------------------*/
void
coap_separate_reject()
{
coap_error_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "AlreadyInUse";
}
/*----------------------------------------------------------------------------*/
int
coap_separate_accept(void *request, coap_separate_t *separate_store)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
coap_transaction_t *const t = coap_get_transaction_by_mid(coap_req->mid);
PRINTF("Separate ACCEPT: /%.*s MID %u\n", coap_req->uri_path_len, coap_req->uri_path, coap_req->mid);
if (t)
{
/* Send separate ACK for CON. */
if (coap_req->type==COAP_TYPE_CON)
{
coap_packet_t ack[1];
/* ACK with empty code (0) */
coap_init_message(ack, COAP_TYPE_ACK, 0, coap_req->mid);
/* Serializing into IPBUF: Only overwrites header parts that are already parsed into the request struct. */
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, (uip_appdata), coap_serialize_message(ack, uip_appdata));
}
/* Store remote address. */
uip_ipaddr_copy(&separate_store->addr, &t->addr);
separate_store->port = t->port;
/* Store correct response type. */
separate_store->type = coap_req->type==COAP_TYPE_CON ? COAP_TYPE_CON : COAP_TYPE_NON;
separate_store->mid = coap_get_mid(); /* if it was a NON, we burned one MID in the engine... */
memcpy(separate_store->token, coap_req->token, coap_req->token_len);
separate_store->token_len = coap_req->token_len;
separate_store->block2_num = coap_req->block2_num;
separate_store->block2_size = coap_req->block2_size;
/* Signal the engine to skip automatic response and clear transaction by engine. */
coap_error_code = MANUAL_RESPONSE;
return 1;
}
else
{
PRINTF("ERROR: Response transaction for separate request not found!\n");
return 0;
}
}
/*----------------------------------------------------------------------------*/
void
coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code)
{
coap_init_message(response, separate_store->type, code, separate_store->mid);
if (separate_store->token_len)
{
coap_set_header_token(response, separate_store->token, separate_store->token_len);
}
}

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@ -1,199 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for reliable transport
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-07-transactions.h"
#include "er-coap-07-observing.h"
/*
* Modulo mask (+1 and +0.5 for rounding) for a random number to get the tick number for the random
* retransmission time between COAP_RESPONSE_TIMEOUT and COAP_RESPONSE_TIMEOUT*COAP_RESPONSE_RANDOM_FACTOR.
*/
#define COAP_RESPONSE_TIMEOUT_TICKS (CLOCK_SECOND * COAP_RESPONSE_TIMEOUT)
#define COAP_RESPONSE_TIMEOUT_BACKOFF_MASK ((CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * (COAP_RESPONSE_RANDOM_FACTOR - 1)) + 1.5)
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(transactions_memb, coap_transaction_t, COAP_MAX_OPEN_TRANSACTIONS);
LIST(transactions_list);
static struct process *transaction_handler_process = NULL;
void
coap_register_as_transaction_handler()
{
transaction_handler_process = PROCESS_CURRENT();
}
coap_transaction_t *
coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port)
{
coap_transaction_t *t = memb_alloc(&transactions_memb);
if (t)
{
t->mid = mid;
t->retrans_counter = 0;
/* save client address */
uip_ipaddr_copy(&t->addr, addr);
t->port = port;
list_add(transactions_list, t); /* List itself makes sure same element is not added twice. */
}
return t;
}
void
coap_send_transaction(coap_transaction_t *t)
{
PRINTF("Sending transaction %u\n", t->mid);
coap_send_message(&t->addr, t->port, t->packet, t->packet_len);
if (COAP_TYPE_CON==((COAP_HEADER_TYPE_MASK & t->packet[0])>>COAP_HEADER_TYPE_POSITION))
{
if (t->retrans_counter<COAP_MAX_RETRANSMIT)
{
/* Not timed out yet. */
PRINTF("Keeping transaction %u\n", t->mid);
if (t->retrans_counter==0)
{
t->retrans_timer.timer.interval = COAP_RESPONSE_TIMEOUT_TICKS + (random_rand() % (clock_time_t) COAP_RESPONSE_TIMEOUT_BACKOFF_MASK);
PRINTF("Initial interval %f\n", (float)t->retrans_timer.timer.interval/CLOCK_SECOND);
}
else
{
t->retrans_timer.timer.interval <<= 1; /* double */
PRINTF("Doubled (%u) interval %f\n", t->retrans_counter, (float)t->retrans_timer.timer.interval/CLOCK_SECOND);
}
/*FIXME
* Hack: Setting timer for responsible process.
* Maybe there is a better way, but avoid posting everything to the process.
*/
struct process *process_actual = PROCESS_CURRENT();
process_current = transaction_handler_process;
etimer_restart(&t->retrans_timer); /* interval updated above */
process_current = process_actual;
t = NULL;
}
else
{
/* Timed out. */
PRINTF("Timeout\n");
restful_response_handler callback = t->callback;
void *callback_data = t->callback_data;
/* handle observers */
coap_remove_observer_by_client(&t->addr, t->port);
coap_clear_transaction(t);
if (callback) {
callback(callback_data, NULL);
}
}
}
else
{
coap_clear_transaction(t);
}
}
void
coap_clear_transaction(coap_transaction_t *t)
{
if (t)
{
PRINTF("Freeing transaction %u: %p\n", t->mid, t);
etimer_stop(&t->retrans_timer);
list_remove(transactions_list, t);
memb_free(&transactions_memb, t);
}
}
coap_transaction_t *
coap_get_transaction_by_mid(uint16_t mid)
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (t->mid==mid)
{
PRINTF("Found transaction for MID %u: %p\n", t->mid, t);
return t;
}
}
return NULL;
}
void
coap_check_transactions()
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (etimer_expired(&t->retrans_timer))
{
++(t->retrans_counter);
PRINTF("Retransmitting %u (%u)\n", t->mid, t->retrans_counter);
coap_send_transaction(t);
}
}
}

1205
apps/er-coap-07/er-coap-07.c
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apps/er-coap-07/er-coap-07.h
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (draft 07)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_07_H_
#define COAP_07_H_
#include <stddef.h> /* for size_t */
#include "contiki-net.h"
#include "erbium.h"
#define COAP_DEFAULT_PORT 5683
#ifndef COAP_SERVER_PORT
#define COAP_SERVER_PORT COAP_DEFAULT_PORT
#endif
#define COAP_DEFAULT_MAX_AGE 60
#define COAP_RESPONSE_TIMEOUT 2
#define COAP_RESPONSE_RANDOM_FACTOR 1.5
#define COAP_MAX_RETRANSMIT 4
#define COAP_HEADER_LEN 4 /* | oc:0xF0 type:0x0C version:0x03 | code | mid:0x00FF | mid:0xFF00 | */
#define COAP_ETAG_LEN 8 /* The maximum number of bytes for the ETag */
#define COAP_TOKEN_LEN 8 /* The maximum number of bytes for the Token */
#define COAP_MAX_ACCEPT_NUM 2 /* The maximum number of accept preferences to parse/store */
#define COAP_HEADER_VERSION_MASK 0xC0
#define COAP_HEADER_VERSION_POSITION 6
#define COAP_HEADER_TYPE_MASK 0x30
#define COAP_HEADER_TYPE_POSITION 4
#define COAP_HEADER_OPTION_COUNT_MASK 0x0F
#define COAP_HEADER_OPTION_COUNT_POSITION 0
#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
/*
* Conservative size limit, as not all options have to be set at the same time.
*/
/* Hdr CoT Age Tag Obs Tok Blo strings */
#define COAP_MAX_HEADER_SIZE (4 + 3 + 5 + 1+COAP_ETAG_LEN + 3 + 1+COAP_TOKEN_LEN + 4 + 10) /* 50 */
#define COAP_MAX_PACKET_SIZE (COAP_MAX_HEADER_SIZE + REST_MAX_CHUNK_SIZE)
/* 0/14 48 for IPv6 (28 for IPv4) */
#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_IPUDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for REST_MAX_CHUNK_SIZE"
#endif
/*
* Maximum number of failed request attempts before action
*/
#ifndef COAP_MAX_ATTEMPTS
#define COAP_MAX_ATTEMPTS 4
#endif /* COAP_MAX_ATTEMPTS */
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define SET_OPTION(packet, opt) ((packet)->options |= 1L<<opt)
#define IS_OPTION(packet, opt) ((packet)->options & 1L<<opt)
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a) : (b))
#endif /* MIN */
/* CoAP message types */
typedef enum {
COAP_TYPE_CON, /* confirmables */
COAP_TYPE_NON, /* non-confirmables */
COAP_TYPE_ACK, /* acknowledgements */
COAP_TYPE_RST /* reset */
} coap_message_type_t;
/* CoAP request method codes */
typedef enum {
COAP_GET = 1,
COAP_POST,
COAP_PUT,
COAP_DELETE
} coap_method_t;
/* CoAP response codes */
typedef enum {
NO_ERROR = 0,
CREATED_2_01 = 65, /* CREATED */
DELETED_2_02 = 66, /* DELETED */
VALID_2_03 = 67, /* NOT_MODIFIED */
CHANGED_2_04 = 68, /* CHANGED */
CONTENT_2_05 = 69, /* OK */
BAD_REQUEST_4_00 = 128, /* BAD_REQUEST */
UNAUTHORIZED_4_01 = 129, /* UNAUTHORIZED */
BAD_OPTION_4_02 = 130, /* BAD_OPTION */
FORBIDDEN_4_03 = 131, /* FORBIDDEN */
NOT_FOUND_4_04 = 132, /* NOT_FOUND */
METHOD_NOT_ALLOWED_4_05 = 133, /* METHOD_NOT_ALLOWED */
NOT_ACCEPTABLE_4_06 = 134, /* NOT_ACCEPTABLE */
PRECONDITION_FAILED_4_12 = 140, /* BAD_REQUEST */
REQUEST_ENTITY_TOO_LARGE_4_13 = 141, /* REQUEST_ENTITY_TOO_LARGE */
UNSUPPORTED_MEDIA_TYPE_4_15 = 143, /* UNSUPPORTED_MEDIA_TYPE */
INTERNAL_SERVER_ERROR_5_00 = 160, /* INTERNAL_SERVER_ERROR */
NOT_IMPLEMENTED_5_01 = 161, /* NOT_IMPLEMENTED */
BAD_GATEWAY_5_02 = 162, /* BAD_GATEWAY */
SERVICE_UNAVAILABLE_5_03 = 163, /* SERVICE_UNAVAILABLE */
GATEWAY_TIMEOUT_5_04 = 164, /* GATEWAY_TIMEOUT */
PROXYING_NOT_SUPPORTED_5_05 = 165, /* PROXYING_NOT_SUPPORTED */
/* Erbium errors */
MEMORY_ALLOCATION_ERROR = 192,
PACKET_SERIALIZATION_ERROR,
/* Erbium hooks */
MANUAL_RESPONSE
} coap_status_t;
/* CoAP header options */
typedef enum {
COAP_OPTION_CONTENT_TYPE = 1, /* 0-2 B */
COAP_OPTION_MAX_AGE = 2, /* 0-4 B */
COAP_OPTION_PROXY_URI = 3, /* 1-270 B */
COAP_OPTION_ETAG = 4, /* 1-8 B */
COAP_OPTION_URI_HOST = 5, /* 1-270 B */
COAP_OPTION_LOCATION_PATH = 6, /* 1-270 B */
COAP_OPTION_URI_PORT = 7, /* 0-2 B */
COAP_OPTION_LOCATION_QUERY = 8, /* 1-270 B */
COAP_OPTION_URI_PATH = 9, /* 1-270 B */
COAP_OPTION_OBSERVE = 10, /* 0-2 B */
COAP_OPTION_TOKEN = 11, /* 1-8 B */
COAP_OPTION_ACCEPT = 12, /* 0-2 B */
COAP_OPTION_IF_MATCH = 13, /* 0-8 B */
COAP_OPTION_FENCE_POST = 14, /* 0 B */
COAP_OPTION_URI_QUERY = 15, /* 1-270 B */
COAP_OPTION_BLOCK2 = 17, /* 1-3 B */
COAP_OPTION_BLOCK1 = 19, /* 1-3 B */
COAP_OPTION_IF_NONE_MATCH = 21 /* 0 B */
} coap_option_t;
/* CoAP content-types */
typedef enum {
TEXT_PLAIN = 0,
TEXT_XML = 1, /* Intented types are not in the initial registry. */
TEXT_CSV = 2,
TEXT_HTML = 3,
IMAGE_GIF = 21,
IMAGE_JPEG = 22,
IMAGE_PNG = 23,
IMAGE_TIFF = 24,
AUDIO_RAW = 25,
VIDEO_RAW = 26,
APPLICATION_LINK_FORMAT = 40, /* Actually not in registry!? */
APPLICATION_XML = 41,
APPLICATION_OCTET_STREAM = 42,
APPLICATION_RDF_XML = 43,
APPLICATION_SOAP_XML = 44,
APPLICATION_ATOM_XML = 45,
APPLICATION_XMPP_XML = 46,
APPLICATION_EXI = 47,
APPLICATION_FASTINFOSET = 48,
APPLICATION_SOAP_FASTINFOSET = 49,
APPLICATION_JSON = 50,
APPLICATION_X_OBIX_BINARY = 51
} coap_content_type_t;
typedef struct {
uint8_t *buffer; /* pointer to CoAP header / incoming packet buffer / memory to serialize packet */
uint8_t version;
coap_message_type_t type;
uint8_t option_count;
uint8_t code;
uint16_t mid;
uint32_t options; /* Bitmap to check if option is set */
coap_content_type_t content_type; /* Parse options once and store; allows setting options in random order */
uint32_t max_age;
size_t proxy_uri_len;
const char *proxy_uri;
uint8_t etag_len;
uint8_t etag[COAP_ETAG_LEN];
size_t uri_host_len;
const char *uri_host;
size_t location_path_len;
const char *location_path;
uint16_t uri_port;
size_t location_query_len;
const char *location_query;
size_t uri_path_len;
const char *uri_path;
uint16_t observe;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint8_t accept_num;
uint16_t accept[COAP_MAX_ACCEPT_NUM];
uint8_t if_match_len;
uint8_t if_match[COAP_ETAG_LEN];
uint32_t block2_num;
uint8_t block2_more;
uint16_t block2_size;
uint32_t block2_offset;
uint32_t block1_num;
uint8_t block1_more;
uint16_t block1_size;
uint32_t block1_offset;
size_t uri_query_len;
const char *uri_query;
uint8_t if_none_match;
uint16_t payload_len;
uint8_t *payload;
} coap_packet_t;
/* To store error code and human-readable payload */
extern coap_status_t coap_error_code;
extern char *coap_error_message;
void coap_init_connection(uint16_t port);
uint16_t coap_get_mid(void);
void coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t mid);
size_t coap_serialize_message(void *packet, uint8_t *buffer);
void coap_send_message(uip_ipaddr_t *addr, uint16_t port, uint8_t *data, uint16_t length);
coap_status_t coap_parse_message(void *request, uint8_t *data, uint16_t data_len);
int coap_get_query_variable(void *packet, const char *name, const char **output);
int coap_get_post_variable(void *packet, const char *name, const char **output);
/*-----------------------------------------------------------------------------------*/
int coap_set_status_code(void *packet, unsigned int code);
unsigned int coap_get_header_content_type(void *packet);
int coap_set_header_content_type(void *packet, unsigned int content_type);
int coap_get_header_accept(void *packet, const uint16_t **accept);
int coap_set_header_accept(void *packet, uint16_t accept);
int coap_get_header_max_age(void *packet, uint32_t *age);
int coap_set_header_max_age(void *packet, uint32_t age);
int coap_get_header_etag(void *packet, const uint8_t **etag);
int coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_match(void *packet, const uint8_t **etag);
int coap_set_header_if_match(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_none_match(void *packet);
int coap_set_header_if_none_match(void *packet);
int coap_get_header_token(void *packet, const uint8_t **token);
int coap_set_header_token(void *packet, const uint8_t *token, size_t token_len);
int coap_get_header_proxy_uri(void *packet, const char **uri); /* In-place string might not be 0-terminated. */
int coap_set_header_proxy_uri(void *packet, const char *uri);
int coap_get_header_uri_host(void *packet, const char **host); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_host(void *packet, const char *host);
int coap_get_header_uri_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_path(void *packet, const char *path);
int coap_get_header_uri_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_query(void *packet, const char *query);
int coap_get_header_location_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_location_path(void *packet, const char *path); /* Also splits optional query into Location-Query option. */
int coap_get_header_location_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_location_query(void *packet, const char *query);
int coap_get_header_observe(void *packet, uint32_t *observe);
int coap_set_header_observe(void *packet, uint32_t observe);
int coap_get_header_block2(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block2(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_block1(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block1(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_payload(void *packet, const uint8_t **payload);
int coap_set_payload(void *packet, const void *payload, size_t length);
#endif /* COAP_07_H_ */

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apps/er-coap-12/Makefile.er-coap-12
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er-coap-12_src = er-coap-12-engine.c er-coap-12.c er-coap-12-transactions.c er-coap-12-observing.c er-coap-12-separate.c

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apps/er-coap-12/er-coap-12-engine.c
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/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-12-engine.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#define PRINTBITS(buf,len) { \
int i,j=0; \
for (i=0; i<len; ++i) { \
for (j=7; j>=0; --j) { \
PRINTF("%c", (((char *)buf)[i] & 1<<j) ? '1' : '0'); \
} \
PRINTF(" "); \
} \
}
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#define PRINTBITS(buf,len)
#endif
PROCESS(coap_receiver, "CoAP Receiver");
/*----------------------------------------------------------------------------*/
/*- Variables ----------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static service_callback_t service_cbk = NULL;
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static
int
coap_receive(void)
{
coap_error_code = NO_ERROR;
PRINTF("handle_incoming_data(): received uip_datalen=%u \n",(uint16_t)uip_datalen());
/* Static declaration reduces stack peaks and program code size. */
static coap_packet_t message[1]; /* This way the packet can be treated as pointer as usual. */
static coap_packet_t response[1];
static coap_transaction_t *transaction = NULL;
if (uip_newdata()) {
PRINTF("receiving UDP datagram from: ");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(":%u\n Length: %u\n Data: ", uip_ntohs(UIP_UDP_BUF->srcport), uip_datalen() );
PRINTBITS(uip_appdata, uip_datalen());
PRINTF("\n");
coap_error_code = coap_parse_message(message, uip_appdata, uip_datalen());
if (coap_error_code==NO_ERROR)
{
/*TODO duplicates suppression, if required by application */
PRINTF(" Parsed: v %u, t %u, oc %u, c %u, mid %u\n", message->version, message->type, message->option_count, message->code, message->mid);
PRINTF(" URL: %.*s\n", message->uri_path_len, message->uri_path);
PRINTF(" Payload: %.*s\n", message->payload_len, message->payload);
/* Handle requests. */
if (message->code >= COAP_GET && message->code <= COAP_DELETE)
{
/* Use transaction buffer for response to confirmable request. */
if ( (transaction = coap_new_transaction(message->mid, &UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport)) )
{
uint32_t block_num = 0;
uint16_t block_size = REST_MAX_CHUNK_SIZE;
uint32_t block_offset = 0;
int32_t new_offset = 0;
/* prepare response */
if (message->type==COAP_TYPE_CON)
{
/* Reliable CON requests are answered with an ACK. */
coap_init_message(response, COAP_TYPE_ACK, CONTENT_2_05, message->mid);
}
else
{
/* Unreliable NON requests are answered with a NON as well. */
coap_init_message(response, COAP_TYPE_NON, CONTENT_2_05, coap_get_mid());
}
/* resource handlers must take care of different handling (e.g., TOKEN_OPTION_REQUIRED_240) */
if (IS_OPTION(message, COAP_OPTION_TOKEN))
{
coap_set_header_token(response, message->token, message->token_len);
SET_OPTION(response, COAP_OPTION_TOKEN);
}
/* get offset for blockwise transfers */
if (coap_get_header_block2(message, &block_num, NULL, &block_size, &block_offset))
{
PRINTF("Blockwise: block request %lu (%u/%u) @ %lu bytes\n", block_num, block_size, REST_MAX_CHUNK_SIZE, block_offset);
block_size = MIN(block_size, REST_MAX_CHUNK_SIZE);
new_offset = block_offset;
}
/* Invoke resource handler. */
if (service_cbk)
{
/* Call REST framework and check if found and allowed. */
if (service_cbk(message, response, transaction->packet+COAP_MAX_HEADER_SIZE, block_size, &new_offset))
{
if (coap_error_code==NO_ERROR)
{
/* Apply blockwise transfers. */
if ( IS_OPTION(message, COAP_OPTION_BLOCK1) && response->code<BAD_REQUEST_4_00 && !IS_OPTION(response, COAP_OPTION_BLOCK1) )
{
PRINTF("Block1 NOT IMPLEMENTED\n");
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoBlock1Support";
}
else if ( IS_OPTION(message, COAP_OPTION_BLOCK2) )
{
/* unchanged new_offset indicates that resource is unaware of blockwise transfer */
if (new_offset==block_offset)
{
PRINTF("Blockwise: unaware resource with payload length %u/%u\n", response->payload_len, block_size);
if (block_offset >= response->payload_len)
{
PRINTF("handle_incoming_data(): block_offset >= response->payload_len\n");
response->code = BAD_OPTION_4_02;
coap_set_payload(response, "BlockOutOfScope", 15); /* a const char str[] and sizeof(str) produces larger code size */
}
else
{
coap_set_header_block2(response, block_num, response->payload_len - block_offset > block_size, block_size);
coap_set_payload(response, response->payload+block_offset, MIN(response->payload_len - block_offset, block_size));
} /* if (valid offset) */
}
else
{
/* resource provides chunk-wise data */
PRINTF("Blockwise: blockwise resource, new offset %ld\n", new_offset);
coap_set_header_block2(response, block_num, new_offset!=-1 || response->payload_len > block_size, block_size);
if (response->payload_len > block_size) coap_set_payload(response, response->payload, block_size);
} /* if (resource aware of blockwise) */
}
else if (new_offset!=0)
{
PRINTF("Blockwise: no block option for blockwise resource, using block size %u\n", REST_MAX_CHUNK_SIZE);
coap_set_header_block2(response, 0, new_offset!=-1, REST_MAX_CHUNK_SIZE);
coap_set_payload(response, response->payload, MIN(response->payload_len, REST_MAX_CHUNK_SIZE));
} /* if (blockwise request) */
} /* no errors/hooks */
} /* successful service callback */
/* Serialize response. */
if (coap_error_code==NO_ERROR)
{
if ((transaction->packet_len = coap_serialize_message(response, transaction->packet))==0)
{
coap_error_code = PACKET_SERIALIZATION_ERROR;
}
}
}
else
{
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoServiceCallbck"; // no a to fit 16 bytes
} /* if (service callback) */
} else {
coap_error_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "NoFreeTraBuffer";
} /* if (transaction buffer) */
}
else
{
/* Responses */
if (message->type==COAP_TYPE_ACK)
{
PRINTF("Received ACK\n");
}
else if (message->type==COAP_TYPE_RST)
{
PRINTF("Received RST\n");
/* Cancel possible subscriptions. */
coap_remove_observer_by_mid(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, message->mid);
}
if ( (transaction = coap_get_transaction_by_mid(message->mid)) )
{
/* Free transaction memory before callback, as it may create a new transaction. */
restful_response_handler callback = transaction->callback;
void *callback_data = transaction->callback_data;
coap_clear_transaction(transaction);
/* Check if someone registered for the response */
if (callback) {
callback(callback_data, message);
}
} /* if (ACKed transaction) */
transaction = NULL;
} /* Request or Response */
} /* if (parsed correctly) */
if (coap_error_code==NO_ERROR)
{
if (transaction) coap_send_transaction(transaction);
}
else if (coap_error_code==MANUAL_RESPONSE)
{
PRINTF("Clearing transaction for manual response");
coap_clear_transaction(transaction);
}
else
{
PRINTF("ERROR %u: %s\n", coap_error_code, coap_error_message);
coap_clear_transaction(transaction);
/* Set to sendable error code. */
if (coap_error_code >= 192)
{
coap_error_code = INTERNAL_SERVER_ERROR_5_00;
}
/* Reuse input buffer for error message. */
coap_init_message(message, COAP_TYPE_ACK, coap_error_code, message->mid);
coap_set_payload(message, coap_error_message, strlen(coap_error_message));
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, uip_appdata, coap_serialize_message(message, uip_appdata));
}
} /* if (new data) */
return coap_error_code;
}
/*----------------------------------------------------------------------------*/
void
coap_receiver_init()
{
process_start(&coap_receiver, NULL);
}
/*----------------------------------------------------------------------------*/
void
coap_set_service_callback(service_callback_t callback)
{
service_cbk = callback;
}
/*----------------------------------------------------------------------------*/
rest_resource_flags_t
coap_get_rest_method(void *packet)
{
return (rest_resource_flags_t)(1 << (((coap_packet_t *)packet)->code - 1));
}
/*----------------------------------------------------------------------------*/
/*- Server part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/* The discover resource is automatically included for CoAP. */
RESOURCE(well_known_core, METHOD_GET, ".well-known/core", "ct=40");
void
well_known_core_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t strpos = 0; /* position in overall string (which is larger than the buffer) */
size_t bufpos = 0; /* position within buffer (bytes written) */
size_t tmplen = 0;
resource_t* resource = NULL;
#if COAP_LINK_FORMAT_FILTERING
/* For filtering. */
const char *filter = NULL;
const char *attrib = NULL;
const char *found = NULL;
const char *end = NULL;
char *value = NULL;
char lastchar;
int len = coap_get_header_uri_query(request, &filter);
if (len)
{
value = strchr(filter, '=');
value[0] = '\0';
++value;
len -= strlen(filter)+1;
PRINTF("Filter %s = %.*s\n", filter, len, value);
if (strcmp(filter,"href")==0 && value[0]=='/')
{
++value;
--len;
}
lastchar = value[len-1];
value[len-1] = '\0';
}
#endif
for (resource = (resource_t*)list_head(rest_get_resources()); resource; resource = resource->next)
{
#if COAP_LINK_FORMAT_FILTERING
/* Filtering */
if (len)
{
if (strcmp(filter,"href")==0)
{
attrib=strstr(resource->url, value);
if (attrib==NULL || (value[-1]=='/' && attrib!=resource->url)) continue;
end = attrib + strlen(attrib);
}
else
{
attrib=strstr(resource->attributes, filter);
if (attrib==NULL || (attrib[strlen(filter)]!='=' && attrib[strlen(filter)]!='"')) continue;
attrib += strlen(filter)+2;
end = strchr(attrib, '"');
}
PRINTF("Filter: res has attrib %s (%s)\n", attrib, value);
found = attrib;
while ((found=strstr(found, value))!=NULL) {
if (found > end)
{
found = NULL;
break;
}
if (lastchar==found[len-1] || lastchar=='*')
{
break;
}
++found;
}
if (found==NULL)
{
continue;
}
PRINTF("Filter: res has prefix %s\n", found);
if (lastchar!='*' && (found[len]!='"' && found[len]!=' ' && found[len]!='\0')) continue;
PRINTF("Filter: res has match\n");
}
#endif
PRINTF("res: /%s (%p)\npos: s%d, o%d, b%d\n", resource->url, resource, strpos, *offset, bufpos);
if (strpos>0)
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ',';
}
++strpos;
}
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '<';
}
++strpos;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '/';
}
++strpos;
tmplen = strlen(resource->url);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->url + ((*offset-(int32_t)strpos > 0) ? (*offset-(int32_t)strpos) : 0));
/* minimal-net requires these casts */
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '>';
}
++strpos;
if (resource->attributes[0])
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ';';
}
++strpos;
tmplen = strlen(resource->attributes);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->attributes + (*offset-(int32_t)strpos > 0 ? *offset-(int32_t)strpos : 0));
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
}
/* buffer full, but resource not completed yet; or: do not break if resource exactly fills buffer. */
if (bufpos >= preferred_size && strpos-bufpos > *offset)
{
PRINTF("res: BREAK at %s (%p)\n", resource->url, resource);
break;
}
}
if (bufpos>0) {
PRINTF("BUF %d: %.*s\n", bufpos, bufpos, (char *) buffer);
coap_set_payload(response, buffer, bufpos );
coap_set_header_content_type(response, APPLICATION_LINK_FORMAT);
}
else if (strpos>0)
{
PRINTF("well_known_core_handler(): bufpos<=0\n");
coap_set_status_code(response, BAD_OPTION_4_02);
coap_set_payload(response, "BlockOutOfScope", 15);
}
if (resource==NULL) {
PRINTF("res: DONE\n");
*offset = -1;
}
else
{
PRINTF("res: MORE at %s (%p)\n", resource->url, resource);
*offset += preferred_size;
}
}
/*----------------------------------------------------------------------------*/
PROCESS_THREAD(coap_receiver, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting CoAP-12 receiver...\n");
rest_activate_resource(&resource_well_known_core);
coap_register_as_transaction_handler();
coap_init_connection(SERVER_LISTEN_PORT);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
coap_receive();
} else if (ev == PROCESS_EVENT_TIMER) {
/* retransmissions are handled here */
coap_check_transactions();
}
} /* while (1) */
PROCESS_END();
}
/*----------------------------------------------------------------------------*/
/*- Client part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
void coap_blocking_request_callback(void *callback_data, void *response) {
struct request_state_t *state = (struct request_state_t *) callback_data;
state->response = (coap_packet_t*) response;
process_poll(state->process);
}
/*----------------------------------------------------------------------------*/
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback)) {
PT_BEGIN(&state->pt);
static uint8_t more;
static uint32_t res_block;
static uint8_t block_error;
state->block_num = 0;
state->response = NULL;
state->process = PROCESS_CURRENT();
more = 0;
res_block = 0;
block_error = 0;
do {
request->mid = coap_get_mid();
if ((state->transaction = coap_new_transaction(request->mid, remote_ipaddr, remote_port)))
{
state->transaction->callback = coap_blocking_request_callback;
state->transaction->callback_data = state;
if (state->block_num>0)
{
coap_set_header_block2(request, state->block_num, 0, REST_MAX_CHUNK_SIZE);
}
state->transaction->packet_len = coap_serialize_message(request, state->transaction->packet);
coap_send_transaction(state->transaction);
PRINTF("Requested #%lu (MID %u)\n", state->block_num, request->mid);
PT_YIELD_UNTIL(&state->pt, ev == PROCESS_EVENT_POLL);
if (!state->response)
{
PRINTF("Server not responding\n");
PT_EXIT(&state->pt);
}
coap_get_header_block2(state->response, &res_block, &more, NULL, NULL);
PRINTF("Received #%lu%s (%u bytes)\n", res_block, more ? "+" : "", state->response->payload_len);
if (res_block==state->block_num)
{
request_callback(state->response);
++(state->block_num);
}
else
{
PRINTF("WRONG BLOCK %lu/%lu\n", res_block, state->block_num);
++block_error;
}
}
else
{
PRINTF("Could not allocate transaction buffer");
PT_EXIT(&state->pt);
}
} while (more && block_error<COAP_MAX_ATTEMPTS);
PT_END(&state->pt);
}
/*----------------------------------------------------------------------------*/
/*- Engine Interface ---------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
const struct rest_implementation coap_rest_implementation = {
"CoAP-12",
coap_receiver_init,
coap_set_service_callback,
coap_get_header_uri_path,
coap_set_header_uri_path,
coap_get_rest_method,
coap_set_status_code,
coap_get_header_content_type,
coap_set_header_content_type,
coap_get_header_accept,
coap_get_header_size,
coap_set_header_size,
coap_get_header_max_age,
coap_set_header_max_age,
coap_set_header_etag,
coap_get_header_if_match,
coap_get_header_if_none_match,
coap_get_header_uri_host,
coap_set_header_location_path,
coap_get_payload,
coap_set_payload,
coap_get_header_uri_query,
coap_get_query_variable,
coap_get_post_variable,
coap_notify_observers,
(restful_post_handler) coap_observe_handler,
NULL, /* default pre-handler (set separate handler after activation if needed) */
NULL, /* default post-handler for non-observable resources */
{
CONTENT_2_05,
CREATED_2_01,
CHANGED_2_04,
DELETED_2_02,
VALID_2_03,
BAD_REQUEST_4_00,
UNAUTHORIZED_4_01,
BAD_OPTION_4_02,
FORBIDDEN_4_03,
NOT_FOUND_4_04,
METHOD_NOT_ALLOWED_4_05,
NOT_ACCEPTABLE_4_06,
REQUEST_ENTITY_TOO_LARGE_4_13,
UNSUPPORTED_MEDIA_TYPE_4_15,
INTERNAL_SERVER_ERROR_5_00,
NOT_IMPLEMENTED_5_01,
BAD_GATEWAY_5_02,
SERVICE_UNAVAILABLE_5_03,
GATEWAY_TIMEOUT_5_04,
PROXYING_NOT_SUPPORTED_5_05
},
{
TEXT_PLAIN,
TEXT_XML,
TEXT_CSV,
TEXT_HTML,
IMAGE_GIF,
IMAGE_JPEG,
IMAGE_PNG,
IMAGE_TIFF,
AUDIO_RAW,
VIDEO_RAW,
APPLICATION_LINK_FORMAT,
APPLICATION_XML,
APPLICATION_OCTET_STREAM,
APPLICATION_RDF_XML,
APPLICATION_SOAP_XML,
APPLICATION_ATOM_XML,
APPLICATION_XMPP_XML,
APPLICATION_EXI,
APPLICATION_FASTINFOSET,
APPLICATION_SOAP_FASTINFOSET,
APPLICATION_JSON,
APPLICATION_X_OBIX_BINARY
}
};

94
apps/er-coap-12/er-coap-12-engine.h
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@ -1,94 +0,0 @@
/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_SERVER_H_
#define COAP_SERVER_H_
#if !defined(REST)
#error "Define REST to \"coap_rest_implementation\""
#endif
#include "er-coap-12.h"
#include "er-coap-12-transactions.h"
#include "er-coap-12-observing.h"
#include "er-coap-12-separate.h"
#include "pt.h"
/* Declare server process */
PROCESS_NAME(coap_receiver);
#define SERVER_LISTEN_PORT UIP_HTONS(COAP_SERVER_PORT)
typedef coap_packet_t rest_request_t;
typedef coap_packet_t rest_response_t;
extern const struct rest_implementation coap_rest_implementation;
void coap_receiver_init(void);
/*-----------------------------------------------------------------------------------*/
/*- Client part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
struct request_state_t {
struct pt pt;
struct process *process;
coap_transaction_t *transaction;
coap_packet_t *response;
uint32_t block_num;
};
typedef void (*blocking_response_handler) (void* response);
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback));
#define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \
{ \
static struct request_state_t request_state; \
PT_SPAWN(process_pt, &request_state.pt, \
coap_blocking_request(&request_state, ev, \
server_addr, server_port, \
request, chunk_handler) \
); \
}
/*-----------------------------------------------------------------------------------*/
#endif /* COAP_SERVER_H_ */

255
apps/er-coap-12/er-coap-12-observing.c
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@ -1,255 +0,0 @@
/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-12-observing.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(observers_memb, coap_observer_t, COAP_MAX_OBSERVERS);
LIST(observers_list);
/*-----------------------------------------------------------------------------------*/
coap_observer_t *
coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url)
{
/* Remove existing observe relationship, if any. */
coap_remove_observer_by_url(addr, port, url);
coap_observer_t *o = memb_alloc(&observers_memb);
if (o)
{
o->url = url;
uip_ipaddr_copy(&o->addr, addr);
o->port = port;
o->token_len = token_len;
memcpy(o->token, token, token_len);
o->last_mid = 0;
stimer_set(&o->refresh_timer, COAP_OBSERVING_REFRESH_INTERVAL);
PRINTF("Adding observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
list_add(observers_list, o);
}
return o;
}
/*-----------------------------------------------------------------------------------*/
void
coap_remove_observer(coap_observer_t *o)
{
PRINTF("Removing observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
memb_free(&observers_memb, o);
list_remove(observers_list, o);
}
int
coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check client ");
PRINT6ADDR(addr);
PRINTF(":%u\n", port);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check Token 0x%02X%02X\n", token[0], token[1]);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->token_len==token_len && memcmp(obs->token, token, token_len)==0)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check URL %p\n", url);
if ((addr==NULL || (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)) && (obs->url==url || memcmp(obs->url, url, strlen(obs->url))==0))
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check MID %u\n", mid);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->last_mid==mid)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*-----------------------------------------------------------------------------------*/
void
coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification)
{
coap_packet_t *const coap_res = (coap_packet_t *) notification;
coap_observer_t* obs = NULL;
uint8_t preferred_type = coap_res->type;
PRINTF("Observing: Notification from %s\n", resource->url);
/* Iterate over observers. */
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
if (obs->url==resource->url) /* using RESOURCE url pointer as handle */
{
coap_transaction_t *transaction = NULL;
/*TODO implement special transaction for CON, sharing the same buffer to allow for more observers. */
if ( (transaction = coap_new_transaction(coap_get_mid(), &obs->addr, obs->port)) )
{
PRINTF(" Observer ");
PRINT6ADDR(&obs->addr);
PRINTF(":%u\n", obs->port);
/* Update last MID for RST matching. */
obs->last_mid = transaction->mid;
/* Prepare response */
coap_res->mid = transaction->mid;
if (obs_counter>=0) coap_set_header_observe(coap_res, obs_counter);
coap_set_header_token(coap_res, obs->token, obs->token_len);
/* Use CON to check whether client is still there/interested after COAP_OBSERVING_REFRESH_INTERVAL. */
if (stimer_expired(&obs->refresh_timer))
{
PRINTF(" Refreshing with CON\n");
coap_res->type = COAP_TYPE_CON;
stimer_restart(&obs->refresh_timer);
}
else
{
coap_res->type = preferred_type;
}
transaction->packet_len = coap_serialize_message(coap_res, transaction->packet);
coap_send_transaction(transaction);
}
}
}
}
/*-----------------------------------------------------------------------------------*/
void
coap_observe_handler(resource_t *resource, void *request, void *response)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
coap_packet_t *const coap_res = (coap_packet_t *) response;
static char content[16];
if (coap_req->code==COAP_GET && coap_res->code<128) /* GET request and response without error code */
{
if (IS_OPTION(coap_req, COAP_OPTION_OBSERVE))
{
if (coap_add_observer(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, coap_req->token, coap_req->token_len, resource->url))
{
coap_set_header_observe(coap_res, 0);
/*
* For demonstration purposes only. A subscription should return the same representation as a normal GET.
* TODO: Comment the following line for any real application.
*/
coap_set_payload(coap_res, content, snprintf(content, sizeof(content), "Added %u/%u", list_length(observers_list), COAP_MAX_OBSERVERS));
}
else
{
coap_res->code = SERVICE_UNAVAILABLE_5_03;
coap_set_payload(coap_res, "TooManyObservers", 16);
} /* if (added observer) */
}
else /* if (observe) */
{
/* Remove client if it is currently observing. */
coap_remove_observer_by_url(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, resource->url);
} /* if (observe) */
}
}

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/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_OBSERVING_H_
#define COAP_OBSERVING_H_
#include "sys/stimer.h"
#include "er-coap-12.h"
#include "er-coap-12-transactions.h"
#ifndef COAP_MAX_OBSERVERS
#define COAP_MAX_OBSERVERS COAP_MAX_OPEN_TRANSACTIONS-1
#endif /* COAP_MAX_OBSERVERS */
/* Interval in seconds in which NON notifies are changed to CON notifies to check client. */
#define COAP_OBSERVING_REFRESH_INTERVAL 60
#if COAP_MAX_OPEN_TRANSACTIONS<COAP_MAX_OBSERVERS
#warning "COAP_MAX_OPEN_TRANSACTIONS smaller than COAP_MAX_OBSERVERS: cannot handle CON notifications"
#endif
typedef struct coap_observer {
struct coap_observer *next; /* for LIST */
const char *url;
uip_ipaddr_t addr;
uint16_t port;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint16_t last_mid;
struct stimer refresh_timer;
} coap_observer_t;
list_t coap_get_observers(void);
coap_observer_t *coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url);
void coap_remove_observer(coap_observer_t *o);
int coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port);
int coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len);
int coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url);
int coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid);
void coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification);
void coap_observe_handler(resource_t *resource, void *request, void *response);
#endif /* COAP_OBSERVING_H_ */

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/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for separate responses
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-12-separate.h"
#include "er-coap-12-transactions.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
/*----------------------------------------------------------------------------*/
void
coap_separate_reject()
{
coap_error_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "AlreadyInUse";
}
/*----------------------------------------------------------------------------*/
int
coap_separate_accept(void *request, coap_separate_t *separate_store)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
coap_transaction_t *const t = coap_get_transaction_by_mid(coap_req->mid);
PRINTF("Separate ACCEPT: /%.*s MID %u\n", coap_req->uri_path_len, coap_req->uri_path, coap_req->mid);
if (t)
{
/* Send separate ACK for CON. */
if (coap_req->type==COAP_TYPE_CON)
{
coap_packet_t ack[1];
/* ACK with empty code (0) */
coap_init_message(ack, COAP_TYPE_ACK, 0, coap_req->mid);
/* Serializing into IPBUF: Only overwrites header parts that are already parsed into the request struct. */
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, (uip_appdata), coap_serialize_message(ack, uip_appdata));
}
/* Store remote address. */
uip_ipaddr_copy(&separate_store->addr, &t->addr);
separate_store->port = t->port;
/* Store correct response type. */
separate_store->type = coap_req->type==COAP_TYPE_CON ? COAP_TYPE_CON : COAP_TYPE_NON;
separate_store->mid = coap_get_mid(); /* if it was a NON, we burned one MID in the engine... */
memcpy(separate_store->token, coap_req->token, coap_req->token_len);
separate_store->token_len = coap_req->token_len;
separate_store->block2_num = coap_req->block2_num;
separate_store->block2_size = coap_req->block2_size;
/* Signal the engine to skip automatic response and clear transaction by engine. */
coap_error_code = MANUAL_RESPONSE;
return 1;
}
else
{
PRINTF("ERROR: Response transaction for separate request not found!\n");
return 0;
}
}
/*----------------------------------------------------------------------------*/
void
coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code)
{
coap_init_message(response, separate_store->type, code, separate_store->mid);
if (separate_store->token_len)
{
coap_set_header_token(response, separate_store->token, separate_store->token_len);
}
}

199
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/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for reliable transport
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-12-transactions.h"
#include "er-coap-12-observing.h"
/*
* Modulo mask (+1 and +0.5 for rounding) for a random number to get the tick number for the random
* retransmission time between COAP_RESPONSE_TIMEOUT and COAP_RESPONSE_TIMEOUT*COAP_RESPONSE_RANDOM_FACTOR.
*/
#define COAP_RESPONSE_TIMEOUT_TICKS (CLOCK_SECOND * COAP_RESPONSE_TIMEOUT)
#define COAP_RESPONSE_TIMEOUT_BACKOFF_MASK ((CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * (COAP_RESPONSE_RANDOM_FACTOR - 1)) + 1.5)
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(transactions_memb, coap_transaction_t, COAP_MAX_OPEN_TRANSACTIONS);
LIST(transactions_list);
static struct process *transaction_handler_process = NULL;
void
coap_register_as_transaction_handler()
{
transaction_handler_process = PROCESS_CURRENT();
}
coap_transaction_t *
coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port)
{
coap_transaction_t *t = memb_alloc(&transactions_memb);
if (t)
{
t->mid = mid;
t->retrans_counter = 0;
/* save client address */
uip_ipaddr_copy(&t->addr, addr);
t->port = port;
list_add(transactions_list, t); /* List itself makes sure same element is not added twice. */
}
return t;
}
void
coap_send_transaction(coap_transaction_t *t)
{
PRINTF("Sending transaction %u\n", t->mid);
coap_send_message(&t->addr, t->port, t->packet, t->packet_len);
if (COAP_TYPE_CON==((COAP_HEADER_TYPE_MASK & t->packet[0])>>COAP_HEADER_TYPE_POSITION))
{
if (t->retrans_counter<COAP_MAX_RETRANSMIT)
{
/* Not timed out yet. */
PRINTF("Keeping transaction %u\n", t->mid);
if (t->retrans_counter==0)
{
t->retrans_timer.timer.interval = COAP_RESPONSE_TIMEOUT_TICKS + (random_rand() % (clock_time_t) COAP_RESPONSE_TIMEOUT_BACKOFF_MASK);
PRINTF("Initial interval %f\n", (float)t->retrans_timer.timer.interval/CLOCK_SECOND);
}
else
{
t->retrans_timer.timer.interval <<= 1; /* double */
PRINTF("Doubled (%u) interval %f\n", t->retrans_counter, (float)t->retrans_timer.timer.interval/CLOCK_SECOND);
}
/*FIXME
* Hack: Setting timer for responsible process.
* Maybe there is a better way, but avoid posting everything to the process.
*/
struct process *process_actual = PROCESS_CURRENT();
process_current = transaction_handler_process;
etimer_restart(&t->retrans_timer); /* interval updated above */
process_current = process_actual;
t = NULL;
}
else
{
/* Timed out. */
PRINTF("Timeout\n");
restful_response_handler callback = t->callback;
void *callback_data = t->callback_data;
/* handle observers */
coap_remove_observer_by_client(&t->addr, t->port);
coap_clear_transaction(t);
if (callback) {
callback(callback_data, NULL);
}
}
}
else
{
coap_clear_transaction(t);
}
}
void
coap_clear_transaction(coap_transaction_t *t)
{
if (t)
{
PRINTF("Freeing transaction %u: %p\n", t->mid, t);
etimer_stop(&t->retrans_timer);
list_remove(transactions_list, t);
memb_free(&transactions_memb, t);
}
}
coap_transaction_t *
coap_get_transaction_by_mid(uint16_t mid)
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (t->mid==mid)
{
PRINTF("Found transaction for MID %u: %p\n", t->mid, t);
return t;
}
}
return NULL;
}
void
coap_check_transactions()
{
coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next)
{
if (etimer_expired(&t->retrans_timer))
{
++(t->retrans_counter);
PRINTF("Retransmitting %u (%u)\n", t->mid, t->retrans_counter);
coap_send_transaction(t);
}
}
}

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apps/er-coap-12/er-coap-12.c
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apps/er-coap-12/er-coap-12.h
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/*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (draft 12)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_12_H_
#define COAP_12_H_
#include <stddef.h> /* for size_t */
#include "contiki-net.h"
#include "erbium.h"
#define COAP_LINK_FORMAT_FILTERING 1
#define COAP_DEFAULT_PORT 5683
#ifndef COAP_SERVER_PORT
#define COAP_SERVER_PORT COAP_DEFAULT_PORT
#endif
#define COAP_DEFAULT_MAX_AGE 60
#define COAP_RESPONSE_TIMEOUT 2
#define COAP_RESPONSE_RANDOM_FACTOR 1.5
#define COAP_MAX_RETRANSMIT 4
#define COAP_HEADER_LEN 4 /* | oc:0xF0 type:0x0C version:0x03 | code | mid:0x00FF | mid:0xFF00 | */
#define COAP_ETAG_LEN 8 /* The maximum number of bytes for the ETag */
#define COAP_TOKEN_LEN 8 /* The maximum number of bytes for the Token */
#define COAP_MAX_ACCEPT_NUM 2 /* The maximum number of accept preferences to parse/store */
#define COAP_HEADER_VERSION_MASK 0xC0
#define COAP_HEADER_VERSION_POSITION 6
#define COAP_HEADER_TYPE_MASK 0x30
#define COAP_HEADER_TYPE_POSITION 4
#define COAP_HEADER_OPTION_COUNT_MASK 0x0F
#define COAP_HEADER_OPTION_COUNT_POSITION 0
#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
/*
* Conservative size limit, as not all options have to be set at the same time.
*/
#ifndef COAP_MAX_HEADER_SIZE
/* Hdr CoT Age Tag Obs Tok Blo strings */
#define COAP_MAX_HEADER_SIZE (4 + 3 + 5 + 1+COAP_ETAG_LEN + 3 + 1+COAP_TOKEN_LEN + 4 + 30) /* 70 */
#endif /* COAP_MAX_HEADER_SIZE */
#define COAP_MAX_PACKET_SIZE (COAP_MAX_HEADER_SIZE + REST_MAX_CHUNK_SIZE)
/* 0/14 48 for IPv6 (28 for IPv4) */
#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_IPUDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for REST_MAX_CHUNK_SIZE"
#endif
/*
* Maximum number of failed request attempts before action
*/
#ifndef COAP_MAX_ATTEMPTS
#define COAP_MAX_ATTEMPTS 4
#endif /* COAP_MAX_ATTEMPTS */
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
/* Bitmap for set options */
enum { OPTION_MAP_SIZE = sizeof(uint8_t) * 8 };
#define SET_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] |= 1 << (opt % OPTION_MAP_SIZE))
#define IS_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] & (1 << (opt % OPTION_MAP_SIZE)))
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a) : (b))
#endif /* MIN */
/* CoAP message types */
typedef enum {
COAP_TYPE_CON, /* confirmables */
COAP_TYPE_NON, /* non-confirmables */
COAP_TYPE_ACK, /* acknowledgements */
COAP_TYPE_RST /* reset */
} coap_message_type_t;
/* CoAP request method codes */
typedef enum {
COAP_GET = 1,
COAP_POST,
COAP_PUT,
COAP_DELETE
} coap_method_t;
/* CoAP response codes */
typedef enum {
NO_ERROR = 0,
CREATED_2_01 = 65, /* CREATED */
DELETED_2_02 = 66, /* DELETED */
VALID_2_03 = 67, /* NOT_MODIFIED */
CHANGED_2_04 = 68, /* CHANGED */
CONTENT_2_05 = 69, /* OK */
BAD_REQUEST_4_00 = 128, /* BAD_REQUEST */
UNAUTHORIZED_4_01 = 129, /* UNAUTHORIZED */
BAD_OPTION_4_02 = 130, /* BAD_OPTION */
FORBIDDEN_4_03 = 131, /* FORBIDDEN */
NOT_FOUND_4_04 = 132, /* NOT_FOUND */
METHOD_NOT_ALLOWED_4_05 = 133, /* METHOD_NOT_ALLOWED */
NOT_ACCEPTABLE_4_06 = 134, /* NOT_ACCEPTABLE */
PRECONDITION_FAILED_4_12 = 140, /* BAD_REQUEST */
REQUEST_ENTITY_TOO_LARGE_4_13 = 141, /* REQUEST_ENTITY_TOO_LARGE */
UNSUPPORTED_MEDIA_TYPE_4_15 = 143, /* UNSUPPORTED_MEDIA_TYPE */
INTERNAL_SERVER_ERROR_5_00 = 160, /* INTERNAL_SERVER_ERROR */
NOT_IMPLEMENTED_5_01 = 161, /* NOT_IMPLEMENTED */
BAD_GATEWAY_5_02 = 162, /* BAD_GATEWAY */
SERVICE_UNAVAILABLE_5_03 = 163, /* SERVICE_UNAVAILABLE */
GATEWAY_TIMEOUT_5_04 = 164, /* GATEWAY_TIMEOUT */
PROXYING_NOT_SUPPORTED_5_05 = 165, /* PROXYING_NOT_SUPPORTED */
/* Erbium errors */
MEMORY_ALLOCATION_ERROR = 192,
PACKET_SERIALIZATION_ERROR,
/* Erbium hooks */
MANUAL_RESPONSE
} coap_status_t;
/* CoAP header options */
typedef enum {
COAP_OPTION_IF_MATCH = 1, /* 0-8 B */
COAP_OPTION_URI_HOST = 3, /* 1-255 B */
COAP_OPTION_ETAG = 4, /* 1-8 B */
COAP_OPTION_IF_NONE_MATCH = 5, /* 0 B */
COAP_OPTION_OBSERVE = 6, /* 0-3 B */
COAP_OPTION_URI_PORT = 7, /* 0-2 B */
COAP_OPTION_LOCATION_PATH = 8, /* 0-255 B */
COAP_OPTION_URI_PATH = 11, /* 0-255 B */
COAP_OPTION_CONTENT_TYPE = 12, /* 0-2 B */
COAP_OPTION_MAX_AGE = 14, /* 0-4 B */
COAP_OPTION_URI_QUERY = 15, /* 0-270 B */
COAP_OPTION_ACCEPT = 16, /* 0-2 B */
COAP_OPTION_TOKEN = 19, /* 1-8 B */
COAP_OPTION_LOCATION_QUERY = 20, /* 1-270 B */
COAP_OPTION_BLOCK2 = 23, /* 1-3 B */
COAP_OPTION_BLOCK1 = 27, /* 1-3 B */
COAP_OPTION_SIZE = 28, /* 0-4 B */
COAP_OPTION_PROXY_URI = 35, /* 1-270 B */
} coap_option_t;
/* CoAP Content-Types */
typedef enum {
TEXT_PLAIN = 0,
TEXT_XML = 1, /* Indented types are not in the initial registry. */
TEXT_CSV = 2,
TEXT_HTML = 3,
IMAGE_GIF = 21,
IMAGE_JPEG = 22,
IMAGE_PNG = 23,
IMAGE_TIFF = 24,
AUDIO_RAW = 25,
VIDEO_RAW = 26,
APPLICATION_LINK_FORMAT = 40,
APPLICATION_XML = 41,
APPLICATION_OCTET_STREAM = 42,
APPLICATION_RDF_XML = 43,
APPLICATION_SOAP_XML = 44,
APPLICATION_ATOM_XML = 45,
APPLICATION_XMPP_XML = 46,
APPLICATION_EXI = 47,
APPLICATION_FASTINFOSET = 48,
APPLICATION_SOAP_FASTINFOSET = 49,
APPLICATION_JSON = 50,
APPLICATION_X_OBIX_BINARY = 51
} coap_content_type_t;
/* Parsed message struct */
typedef struct {
uint8_t *buffer; /* pointer to CoAP header / incoming packet buffer / memory to serialize packet */
uint8_t version;
coap_message_type_t type;
uint8_t option_count;
uint8_t code;
uint16_t mid;
uint8_t options[COAP_OPTION_PROXY_URI / OPTION_MAP_SIZE + 1]; /* Bitmap to check if option is set */
coap_content_type_t content_type; /* Parse options once and store; allows setting options in random order */
uint32_t max_age;
size_t proxy_uri_len;
const char *proxy_uri;
uint8_t etag_len;
uint8_t etag[COAP_ETAG_LEN];
size_t uri_host_len;
const char *uri_host;
size_t location_path_len;
const char *location_path;
uint16_t uri_port;
size_t location_query_len;
const char *location_query;
size_t uri_path_len;
const char *uri_path;
uint16_t observe;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint8_t accept_num;
uint16_t accept[COAP_MAX_ACCEPT_NUM];
uint8_t if_match_len;
uint8_t if_match[COAP_ETAG_LEN];
uint32_t block2_num;
uint8_t block2_more;
uint16_t block2_size;
uint32_t block2_offset;
uint32_t block1_num;
uint8_t block1_more;
uint16_t block1_size;
uint32_t block1_offset;
uint32_t size;
size_t uri_query_len;
const char *uri_query;
uint8_t if_none_match;
uint16_t payload_len;
uint8_t *payload;
} coap_packet_t;
/* Option format serialization*/
#define COAP_SERIALIZE_INT_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" [%u]\n", coap_pkt->field); \
option += coap_serialize_int_option(number, current_number, option, coap_pkt->field); \
coap_pkt->option_count += 1; \
current_number = number; \
}
#define COAP_SERIALIZE_BYTE_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->field##_len, \
coap_pkt->field[0], \
coap_pkt->field[1], \
coap_pkt->field[2], \
coap_pkt->field[3], \
coap_pkt->field[4], \
coap_pkt->field[5], \
coap_pkt->field[6], \
coap_pkt->field[7] \
); /*FIXME always prints 8 bytes */ \
uint8_t split_options = '\0'; \
option += coap_serialize_array_option(number, current_number, option, coap_pkt->field, coap_pkt->field##_len, &split_options); \
coap_pkt->option_count += split_options; \
current_number = number; \
}
#define COAP_SERIALIZE_STRING_OPTION(number, field, splitter, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" [%.*s]\n", coap_pkt->field##_len, coap_pkt->field); \
uint8_t split_options = splitter; \
option += coap_serialize_array_option(number, current_number, option, (uint8_t *) coap_pkt->field, coap_pkt->field##_len, &split_options); \
coap_pkt->option_count += split_options; \
current_number = number; \
}
#define COAP_SERIALIZE_ACCEPT_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
int i; \
for (i=0; i<coap_pkt->field##_num; ++i) \
{ \
PRINTF(text" [%u]\n", coap_pkt->field[i]); \
option += coap_serialize_int_option(number, current_number, option, coap_pkt->field[i]); \
coap_pkt->option_count += 1; \
current_number = number; \
} \
}
#define COAP_SERIALIZE_BLOCK_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) \
{ \
PRINTF(text" [%lu%s (%u B/blk)]\n", coap_pkt->field##_num, coap_pkt->field##_more ? "+" : "", coap_pkt->field##_size); \
uint32_t block = coap_pkt->field##_num << 4; \
if (coap_pkt->field##_more) block |= 0x8; \
block |= 0xF & coap_log_2(coap_pkt->field##_size/16); \
PRINTF(text" encoded: 0x%lX\n", block); \
option += coap_serialize_int_option(number, current_number, option, block); \
coap_pkt->option_count += 1; \
current_number = number; \
}
/* To store error code and human-readable payload */
extern coap_status_t coap_error_code;
extern char *coap_error_message;
void coap_init_connection(uint16_t port);
uint16_t coap_get_mid(void);
void coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t mid);
size_t coap_serialize_message(void *packet, uint8_t *buffer);
void coap_send_message(uip_ipaddr_t *addr, uint16_t port, uint8_t *data, uint16_t length);
coap_status_t coap_parse_message(void *request, uint8_t *data, uint16_t data_len);
int coap_get_query_variable(void *packet, const char *name, const char **output);
int coap_get_post_variable(void *packet, const char *name, const char **output);
/*-----------------------------------------------------------------------------------*/
int coap_set_status_code(void *packet, unsigned int code);
unsigned int coap_get_header_content_type(void *packet);
int coap_set_header_content_type(void *packet, unsigned int content_type);
int coap_get_header_accept(void *packet, const uint16_t **accept);
int coap_set_header_accept(void *packet, uint16_t accept);
int coap_get_header_max_age(void *packet, uint32_t *age);
int coap_set_header_max_age(void *packet, uint32_t age);
int coap_get_header_etag(void *packet, const uint8_t **etag);
int coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_match(void *packet, const uint8_t **etag);
int coap_set_header_if_match(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_none_match(void *packet);
int coap_set_header_if_none_match(void *packet);
int coap_get_header_token(void *packet, const uint8_t **token);
int coap_set_header_token(void *packet, const uint8_t *token, size_t token_len);
int coap_get_header_proxy_uri(void *packet, const char **uri); /* In-place string might not be 0-terminated. */
int coap_set_header_proxy_uri(void *packet, const char *uri);
int coap_get_header_uri_host(void *packet, const char **host); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_host(void *packet, const char *host);
int coap_get_header_uri_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_path(void *packet, const char *path);
int coap_get_header_uri_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_query(void *packet, const char *query);
int coap_get_header_location_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_location_path(void *packet, const char *path); /* Also splits optional query into Location-Query option. */
int coap_get_header_location_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_location_query(void *packet, const char *query);
int coap_get_header_observe(void *packet, uint32_t *observe);
int coap_set_header_observe(void *packet, uint32_t observe);
int coap_get_header_block2(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block2(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_block1(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block1(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_size(void *packet, uint32_t *size);
int coap_set_header_size(void *packet, uint32_t size);
int coap_get_payload(void *packet, const uint8_t **payload);
int coap_set_payload(void *packet, const void *payload, size_t length);
#endif /* COAP_12_H_ */

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apps/er-coap-13/Makefile.er-coap-13
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@ -1 +0,0 @@
er-coap-13_src = er-coap-13.c er-coap-13-engine.c er-coap-13-transactions.c er-coap-13-observing.c er-coap-13-separate.c

681
apps/er-coap-13/er-coap-13-engine.c
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@ -1,681 +0,0 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-13-engine.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#define PRINTBITS(buf,len) { \
int i,j=0; \
for (i=0; i<len; ++i) { \
for (j=7; j>=0; --j) { \
PRINTF("%c", (((char *)buf)[i] & 1<<j) ? '1' : '0'); \
} \
PRINTF(" "); \
} \
}
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#define PRINTBITS(buf,len)
#endif
PROCESS(coap_receiver, "CoAP Receiver");
/*----------------------------------------------------------------------------*/
/*- Variables ----------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static service_callback_t service_cbk = NULL;
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
static
int
coap_receive(void)
{
coap_error_code = NO_ERROR;
PRINTF("handle_incoming_data(): received uip_datalen=%u \n",(uint16_t)uip_datalen());
/* Static declaration reduces stack peaks and program code size. */
static coap_packet_t message[1]; /* This way the packet can be treated as pointer as usual. */
static coap_packet_t response[1];
static coap_transaction_t *transaction = NULL;
if (uip_newdata()) {
PRINTF("receiving UDP datagram from: ");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(":%u\n Length: %u\n Data: ", uip_ntohs(UIP_UDP_BUF->srcport), uip_datalen() );
PRINTBITS(uip_appdata, uip_datalen());
PRINTF("\n");
coap_error_code = coap_parse_message(message, uip_appdata, uip_datalen());
if (coap_error_code==NO_ERROR)
{
/*TODO duplicates suppression, if required by application */
PRINTF(" Parsed: v %u, t %u, tkl %u, c %u, mid %u\n", message->version, message->type, message->token_len, message->code, message->mid);
PRINTF(" URL: %.*s\n", message->uri_path_len, message->uri_path);
PRINTF(" Payload: %.*s\n", message->payload_len, message->payload);
/* Handle requests. */
if (message->code >= COAP_GET && message->code <= COAP_DELETE)
{
/* Use transaction buffer for response to confirmable request. */
if ( (transaction = coap_new_transaction(message->mid, &UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport)) )
{
uint32_t block_num = 0;
uint16_t block_size = REST_MAX_CHUNK_SIZE;
uint32_t block_offset = 0;
int32_t new_offset = 0;
/* prepare response */
if (message->type==COAP_TYPE_CON)
{
/* Reliable CON requests are answered with an ACK. */
coap_init_message(response, COAP_TYPE_ACK, CONTENT_2_05, message->mid);
}
else
{
/* Unreliable NON requests are answered with a NON as well. */
coap_init_message(response, COAP_TYPE_NON, CONTENT_2_05, coap_get_mid());
}
/* mirror token */
if (message->token_len)
{
coap_set_header_token(response, message->token, message->token_len);
}
/* get offset for blockwise transfers */
if (coap_get_header_block2(message, &block_num, NULL, &block_size, &block_offset))
{
PRINTF("Blockwise: block request %lu (%u/%u) @ %lu bytes\n", block_num, block_size, REST_MAX_CHUNK_SIZE, block_offset);
block_size = MIN(block_size, REST_MAX_CHUNK_SIZE);
new_offset = block_offset;
}
/* Invoke resource handler. */
if (service_cbk)
{
/* Call REST framework and check if found and allowed. */
if (service_cbk(message, response, transaction->packet+COAP_MAX_HEADER_SIZE, block_size, &new_offset))
{
if (coap_error_code==NO_ERROR)
{
/* Apply blockwise transfers. */
if ( IS_OPTION(message, COAP_OPTION_BLOCK1) && response->code<BAD_REQUEST_4_00 && !IS_OPTION(response, COAP_OPTION_BLOCK1) )
{
PRINTF("Block1 NOT IMPLEMENTED\n");
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoBlock1Support";
}
else if ( IS_OPTION(message, COAP_OPTION_BLOCK2) )
{
/* unchanged new_offset indicates that resource is unaware of blockwise transfer */
if (new_offset==block_offset)
{
PRINTF("Blockwise: unaware resource with payload length %u/%u\n", response->payload_len, block_size);
if (block_offset >= response->payload_len)
{
PRINTF("handle_incoming_data(): block_offset >= response->payload_len\n");
response->code = BAD_OPTION_4_02;
coap_set_payload(response, "BlockOutOfScope", 15); /* a const char str[] and sizeof(str) produces larger code size */
}
else
{
coap_set_header_block2(response, block_num, response->payload_len - block_offset > block_size, block_size);
coap_set_payload(response, response->payload+block_offset, MIN(response->payload_len - block_offset, block_size));
} /* if (valid offset) */
}
else
{
/* resource provides chunk-wise data */
PRINTF("Blockwise: blockwise resource, new offset %ld\n", new_offset);
coap_set_header_block2(response, block_num, new_offset!=-1 || response->payload_len > block_size, block_size);
if (response->payload_len > block_size) coap_set_payload(response, response->payload, block_size);
} /* if (resource aware of blockwise) */
}
else if (new_offset!=0)
{
PRINTF("Blockwise: no block option for blockwise resource, using block size %u\n", REST_MAX_CHUNK_SIZE);
coap_set_header_block2(response, 0, new_offset!=-1, REST_MAX_CHUNK_SIZE);
coap_set_payload(response, response->payload, MIN(response->payload_len, REST_MAX_CHUNK_SIZE));
} /* if (blockwise request) */
} /* no errors/hooks */
} /* successful service callback */
/* Serialize response. */
if (coap_error_code==NO_ERROR)
{
if ((transaction->packet_len = coap_serialize_message(response, transaction->packet))==0)
{
coap_error_code = PACKET_SERIALIZATION_ERROR;
}
}
}
else
{
coap_error_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoServiceCallbck"; // no a to fit 16 bytes
} /* if (service callback) */
} else {
coap_error_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "NoFreeTraBuffer";
} /* if (transaction buffer) */
}
else
{
/* Responses */
if (message->type==COAP_TYPE_CON && message->code==0)
{
PRINTF("Received Ping\n");
coap_error_code = PING_RESPONSE;
}
else if (message->type==COAP_TYPE_ACK)
{
/* Transactions are closed through lookup below */
PRINTF("Received ACK\n");
}
else if (message->type==COAP_TYPE_RST)
{
PRINTF("Received RST\n");
/* Cancel possible subscriptions. */
coap_remove_observer_by_mid(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, message->mid);
}
if ( (transaction = coap_get_transaction_by_mid(message->mid)) )
{
/* Free transaction memory before callback, as it may create a new transaction. */
restful_response_handler callback = transaction->callback;
void *callback_data = transaction->callback_data;
coap_clear_transaction(transaction);
/* Check if someone registered for the response */
if (callback) {
callback(callback_data, message);
}
} /* if (ACKed transaction) */
transaction = NULL;
} /* Request or Response */
} /* if (parsed correctly) */
if (coap_error_code==NO_ERROR)
{
if (transaction) coap_send_transaction(transaction);
}
else if (coap_error_code==MANUAL_RESPONSE)
{
PRINTF("Clearing transaction for manual response");
coap_clear_transaction(transaction);
}
else
{
coap_message_type_t reply_type = COAP_TYPE_ACK;
PRINTF("ERROR %u: %s\n", coap_error_code, coap_error_message);
coap_clear_transaction(transaction);
/* Set to sendable error code. */
if (coap_error_code >= 192)
{
coap_error_code = INTERNAL_SERVER_ERROR_5_00;
}
if (coap_error_code == PING_RESPONSE)
{
coap_error_code = 0;
reply_type = COAP_TYPE_RST;
}
/* Reuse input buffer for error message. */
coap_init_message(message, reply_type, coap_error_code, message->mid);
coap_set_payload(message, coap_error_message, strlen(coap_error_message));
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, uip_appdata, coap_serialize_message(message, uip_appdata));
}
} /* if (new data) */
return coap_error_code;
}
/*----------------------------------------------------------------------------*/
void
coap_receiver_init()
{
process_start(&coap_receiver, NULL);
}
/*----------------------------------------------------------------------------*/
void
coap_set_service_callback(service_callback_t callback)
{
service_cbk = callback;
}
/*----------------------------------------------------------------------------*/
rest_resource_flags_t
coap_get_rest_method(void *packet)
{
return (rest_resource_flags_t)(1 << (((coap_packet_t *)packet)->code - 1));
}
/*----------------------------------------------------------------------------*/
/*- Server part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/* The discover resource is automatically included for CoAP. */
RESOURCE(well_known_core, METHOD_GET, ".well-known/core", "ct=40");
void
well_known_core_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t strpos = 0; /* position in overall string (which is larger than the buffer) */
size_t bufpos = 0; /* position within buffer (bytes written) */
size_t tmplen = 0;
resource_t* resource = NULL;
#if COAP_LINK_FORMAT_FILTERING
/* For filtering. */
const char *filter = NULL;
const char *attrib = NULL;
const char *found = NULL;
const char *end = NULL;
char *value = NULL;
char lastchar = '\0';
int len = coap_get_header_uri_query(request, &filter);
if (len)
{
value = strchr(filter, '=');
value[0] = '\0';
++value;
len -= strlen(filter)+1;
PRINTF("Filter %s = %.*s\n", filter, len, value);
if (strcmp(filter,"href")==0 && value[0]=='/')
{
++value;
--len;
}
lastchar = value[len-1];
value[len-1] = '\0';
}
#endif
for (resource = (resource_t*)list_head(rest_get_resources()); resource; resource = resource->next)
{
#if COAP_LINK_FORMAT_FILTERING
/* Filtering */
if (len)
{
if (strcmp(filter,"href")==0)
{
attrib=strstr(resource->url, value);
if (attrib==NULL || (value[-1]=='/' && attrib!=resource->url)) continue;
end = attrib + strlen(attrib);
}
else
{
attrib=strstr(resource->attributes, filter);
if (attrib==NULL || (attrib[strlen(filter)]!='=' && attrib[strlen(filter)]!='"')) continue;
attrib += strlen(filter)+2;
end = strchr(attrib, '"');
}
PRINTF("Filter: res has attrib %s (%s)\n", attrib, value);
found = attrib;
while ((found=strstr(found, value))!=NULL) {
if (found > end)
{
found = NULL;
break;
}
if (lastchar==found[len-1] || lastchar=='*')
{
break;
}
++found;
}
if (found==NULL)
{
continue;
}
PRINTF("Filter: res has prefix %s\n", found);
if (lastchar!='*' && (found[len]!='"' && found[len]!=' ' && found[len]!='\0')) continue;
PRINTF("Filter: res has match\n");
}
#endif
PRINTF("res: /%s (%p)\npos: s%d, o%ld, b%d\n", resource->url, resource, strpos, *offset, bufpos);
if (strpos>0)
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ',';
}
++strpos;
}
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '<';
}
++strpos;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '/';
}
++strpos;
tmplen = strlen(resource->url);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->url + ((*offset-(int32_t)strpos > 0) ? (*offset-(int32_t)strpos) : 0));
/* minimal-net requires these casts */
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = '>';
}
++strpos;
if (resource->attributes[0])
{
if (strpos >= *offset && bufpos < preferred_size)
{
buffer[bufpos++] = ';';
}
++strpos;
tmplen = strlen(resource->attributes);
if (strpos+tmplen > *offset)
{
bufpos += snprintf((char *) buffer + bufpos, preferred_size - bufpos + 1,
"%s", resource->attributes + (*offset-(int32_t)strpos > 0 ? *offset-(int32_t)strpos : 0));
if (bufpos >= preferred_size)
{
break;
}
}
strpos += tmplen;
}
/* buffer full, but resource not completed yet; or: do not break if resource exactly fills buffer. */
if (bufpos >= preferred_size && strpos-bufpos > *offset)
{
PRINTF("res: BREAK at %s (%p)\n", resource->url, resource);
break;
}
}
if (bufpos>0) {
PRINTF("BUF %d: %.*s\n", bufpos, bufpos, (char *) buffer);
coap_set_payload(response, buffer, bufpos );
coap_set_header_content_type(response, APPLICATION_LINK_FORMAT);
}
else if (strpos>0)
{
PRINTF("well_known_core_handler(): bufpos<=0\n");
coap_set_status_code(response, BAD_OPTION_4_02);
coap_set_payload(response, "BlockOutOfScope", 15);
}
if (resource==NULL) {
PRINTF("res: DONE\n");
*offset = -1;
}
else
{
PRINTF("res: MORE at %s (%p)\n", resource->url, resource);
*offset += preferred_size;
}
}
/*----------------------------------------------------------------------------*/
PROCESS_THREAD(coap_receiver, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting CoAP-13 receiver...\n");
rest_activate_resource(&resource_well_known_core);
coap_register_as_transaction_handler();
coap_init_connection(SERVER_LISTEN_PORT);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
coap_receive();
} else if (ev == PROCESS_EVENT_TIMER) {
/* retransmissions are handled here */
coap_check_transactions();
}
} /* while (1) */
PROCESS_END();
}
/*----------------------------------------------------------------------------*/
/*- Client part --------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
void coap_blocking_request_callback(void *callback_data, void *response) {
struct request_state_t *state = (struct request_state_t *) callback_data;
state->response = (coap_packet_t*) response;
process_poll(state->process);
}
/*----------------------------------------------------------------------------*/
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback)) {
PT_BEGIN(&state->pt);
static uint8_t more;
static uint32_t res_block;
static uint8_t block_error;
state->block_num = 0;
state->response = NULL;
state->process = PROCESS_CURRENT();
more = 0;
res_block = 0;
block_error = 0;
do {
request->mid = coap_get_mid();
if ((state->transaction = coap_new_transaction(request->mid, remote_ipaddr, remote_port)))
{
state->transaction->callback = coap_blocking_request_callback;
state->transaction->callback_data = state;
if (state->block_num>0)
{
coap_set_header_block2(request, state->block_num, 0, REST_MAX_CHUNK_SIZE);
}
state->transaction->packet_len = coap_serialize_message(request, state->transaction->packet);
coap_send_transaction(state->transaction);
PRINTF("Requested #%lu (MID %u)\n", state->block_num, request->mid);
PT_YIELD_UNTIL(&state->pt, ev == PROCESS_EVENT_POLL);
if (!state->response)
{
PRINTF("Server not responding\n");
PT_EXIT(&state->pt);
}
coap_get_header_block2(state->response, &res_block, &more, NULL, NULL);
PRINTF("Received #%lu%s (%u bytes)\n", res_block, more ? "+" : "", state->response->payload_len);
if (res_block==state->block_num)
{
request_callback(state->response);
++(state->block_num);
}
else
{
PRINTF("WRONG BLOCK %lu/%lu\n", res_block, state->block_num);
++block_error;
}
}
else
{
PRINTF("Could not allocate transaction buffer");
PT_EXIT(&state->pt);
}
} while (more && block_error<COAP_MAX_ATTEMPTS);
PT_END(&state->pt);
}
/*----------------------------------------------------------------------------*/
/*- Engine Interface ---------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
const struct rest_implementation coap_rest_implementation = {
"CoAP-13",
coap_receiver_init,
coap_set_service_callback,
coap_get_header_uri_path,
coap_set_header_uri_path,
coap_get_rest_method,
coap_set_status_code,
coap_get_header_content_type,
coap_set_header_content_type,
coap_get_header_accept,
coap_get_header_size,
coap_set_header_size,
coap_get_header_max_age,
coap_set_header_max_age,
coap_set_header_etag,
coap_get_header_if_match,
coap_get_header_if_none_match,
coap_get_header_uri_host,
coap_set_header_location_path,
coap_get_payload,
coap_set_payload,
coap_get_header_uri_query,
coap_get_query_variable,
coap_get_post_variable,
coap_notify_observers,
(restful_post_handler) coap_observe_handler,
NULL, /* default pre-handler (set separate handler after activation if needed) */
NULL, /* default post-handler for non-observable resources */
{
CONTENT_2_05,
CREATED_2_01,
CHANGED_2_04,
DELETED_2_02,
VALID_2_03,
BAD_REQUEST_4_00,
UNAUTHORIZED_4_01,
BAD_OPTION_4_02,
FORBIDDEN_4_03,
NOT_FOUND_4_04,
METHOD_NOT_ALLOWED_4_05,
NOT_ACCEPTABLE_4_06,
REQUEST_ENTITY_TOO_LARGE_4_13,
UNSUPPORTED_MEDIA_TYPE_4_15,
INTERNAL_SERVER_ERROR_5_00,
NOT_IMPLEMENTED_5_01,
BAD_GATEWAY_5_02,
SERVICE_UNAVAILABLE_5_03,
GATEWAY_TIMEOUT_5_04,
PROXYING_NOT_SUPPORTED_5_05
},
{
TEXT_PLAIN,
TEXT_XML,
TEXT_CSV,
TEXT_HTML,
IMAGE_GIF,
IMAGE_JPEG,
IMAGE_PNG,
IMAGE_TIFF,
AUDIO_RAW,
VIDEO_RAW,
APPLICATION_LINK_FORMAT,
APPLICATION_XML,
APPLICATION_OCTET_STREAM,
APPLICATION_RDF_XML,
APPLICATION_SOAP_XML,
APPLICATION_ATOM_XML,
APPLICATION_XMPP_XML,
APPLICATION_EXI,
APPLICATION_FASTINFOSET,
APPLICATION_SOAP_FASTINFOSET,
APPLICATION_JSON,
APPLICATION_X_OBIX_BINARY
}
};

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apps/er-coap-13/er-coap-13-engine.h
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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation of the REST Engine
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_SERVER_H_
#define COAP_SERVER_H_
#if !defined(REST)
#error "Define REST to \"coap_rest_implementation\""
#endif
#include "er-coap-13.h"
#include "er-coap-13-transactions.h"
#include "er-coap-13-observing.h"
#include "er-coap-13-separate.h"
#include "pt.h"
/* Declare server process */
PROCESS_NAME(coap_receiver);
#define SERVER_LISTEN_PORT UIP_HTONS(COAP_SERVER_PORT)
typedef coap_packet_t rest_request_t;
typedef coap_packet_t rest_response_t;
extern const struct rest_implementation coap_rest_implementation;
void coap_receiver_init(void);
/*-----------------------------------------------------------------------------------*/
/*- Client part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
struct request_state_t {
struct pt pt;
struct process *process;
coap_transaction_t *transaction;
coap_packet_t *response;
uint32_t block_num;
};
typedef void (*blocking_response_handler) (void* response);
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback));
#define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \
{ \
static struct request_state_t request_state; \
PT_SPAWN(process_pt, &request_state.pt, \
coap_blocking_request(&request_state, ev, \
server_addr, server_port, \
request, chunk_handler) \
); \
}
/*-----------------------------------------------------------------------------------*/
#endif /* COAP_SERVER_H_ */

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apps/er-coap-13/er-coap-13-observing.c
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@ -1,255 +0,0 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-13-observing.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
MEMB(observers_memb, coap_observer_t, COAP_MAX_OBSERVERS);
LIST(observers_list);
/*-----------------------------------------------------------------------------------*/
coap_observer_t *
coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url)
{
/* Remove existing observe relationship, if any. */
coap_remove_observer_by_url(addr, port, url);
coap_observer_t *o = memb_alloc(&observers_memb);
if (o)
{
o->url = url;
uip_ipaddr_copy(&o->addr, addr);
o->port = port;
o->token_len = token_len;
memcpy(o->token, token, token_len);
o->last_mid = 0;
stimer_set(&o->refresh_timer, COAP_OBSERVING_REFRESH_INTERVAL);
PRINTF("Adding observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
list_add(observers_list, o);
}
return o;
}
/*-----------------------------------------------------------------------------------*/
void
coap_remove_observer(coap_observer_t *o)
{
PRINTF("Removing observer for /%s [0x%02X%02X]\n", o->url, o->token[0], o->token[1]);
memb_free(&observers_memb, o);
list_remove(observers_list, o);
}
int
coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check client ");
PRINT6ADDR(addr);
PRINTF(":%u\n", port);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check Token 0x%02X%02X\n", token[0], token[1]);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->token_len==token_len && memcmp(obs->token, token, token_len)==0)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check URL %p\n", url);
if ((addr==NULL || (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port)) && (obs->url==url || memcmp(obs->url, url, strlen(obs->url))==0))
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
int
coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid)
{
int removed = 0;
coap_observer_t* obs = NULL;
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
PRINTF("Remove check MID %u\n", mid);
if (uip_ipaddr_cmp(&obs->addr, addr) && obs->port==port && obs->last_mid==mid)
{
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*-----------------------------------------------------------------------------------*/
void
coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification)
{
coap_packet_t *const coap_res = (coap_packet_t *) notification;
coap_observer_t* obs = NULL;
uint8_t preferred_type = coap_res->type;
PRINTF("Observing: Notification from %s\n", resource->url);
/* Iterate over observers. */
for (obs = (coap_observer_t*)list_head(observers_list); obs; obs = obs->next)
{
if (obs->url==resource->url) /* using RESOURCE url pointer as handle */
{
coap_transaction_t *transaction = NULL;
/*TODO implement special transaction for CON, sharing the same buffer to allow for more observers. */
if ( (transaction = coap_new_transaction(coap_get_mid(), &obs->addr, obs->port)) )
{
PRINTF(" Observer ");
PRINT6ADDR(&obs->addr);
PRINTF(":%u\n", obs->port);
/* Update last MID for RST matching. */
obs->last_mid = transaction->mid;
/* Prepare response */
coap_res->mid = transaction->mid;
if (obs_counter>=0) coap_set_header_observe(coap_res, obs_counter);
coap_set_header_token(coap_res, obs->token, obs->token_len);
/* Use CON to check whether client is still there/interested after COAP_OBSERVING_REFRESH_INTERVAL. */
if (stimer_expired(&obs->refresh_timer))
{
PRINTF(" Refreshing with CON\n");
coap_res->type = COAP_TYPE_CON;
stimer_restart(&obs->refresh_timer);
}
else
{
coap_res->type = preferred_type;
}
transaction->packet_len = coap_serialize_message(coap_res, transaction->packet);
coap_send_transaction(transaction);
}
}
}
}
/*-----------------------------------------------------------------------------------*/
void
coap_observe_handler(resource_t *resource, void *request, void *response)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
coap_packet_t *const coap_res = (coap_packet_t *) response;
static char content[16];
if (coap_req->code==COAP_GET && coap_res->code<128) /* GET request and response without error code */
{
if (IS_OPTION(coap_req, COAP_OPTION_OBSERVE))
{
if (coap_add_observer(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, coap_req->token, coap_req->token_len, resource->url))
{
coap_set_header_observe(coap_res, 0);
/*
* For demonstration purposes only. A subscription should return the same representation as a normal GET.
* TODO: Comment the following line for any real application.
*/
coap_set_payload(coap_res, content, snprintf(content, sizeof(content), "Added %u/%u", list_length(observers_list), COAP_MAX_OBSERVERS));
}
else
{
coap_res->code = SERVICE_UNAVAILABLE_5_03;
coap_set_payload(coap_res, "TooManyObservers", 16);
} /* if (added observer) */
}
else /* if (observe) */
{
/* Remove client if it is currently observing. */
coap_remove_observer_by_url(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, resource->url);
} /* if (observe) */
}
}

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apps/er-coap-13/er-coap-13.c
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apps/er-coap-13/er-coap-13.h
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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (draft 12)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef COAP_13_H_
#define COAP_13_H_
#include <stddef.h> /* for size_t */
#include "contiki-net.h"
#include "erbium.h"
#define COAP_LINK_FORMAT_FILTERING 1
#define COAP_DEFAULT_PORT 5683
#ifndef COAP_SERVER_PORT
#define COAP_SERVER_PORT COAP_DEFAULT_PORT
#endif
#define COAP_DEFAULT_MAX_AGE 60
#define COAP_RESPONSE_TIMEOUT 2
#define COAP_RESPONSE_RANDOM_FACTOR 1.5
#define COAP_MAX_RETRANSMIT 4
#define COAP_HEADER_LEN 4 /* | version:0x03 type:0x0C tkl:0xF0 | code | mid:0x00FF | mid:0xFF00 | */
#define COAP_ETAG_LEN 8 /* The maximum number of bytes for the ETag */
#define COAP_TOKEN_LEN 8 /* The maximum number of bytes for the Token */
#define COAP_MAX_ACCEPT_NUM 2 /* The maximum number of accept preferences to parse/store */
#define COAP_HEADER_VERSION_MASK 0xC0
#define COAP_HEADER_VERSION_POSITION 6
#define COAP_HEADER_TYPE_MASK 0x30
#define COAP_HEADER_TYPE_POSITION 4
#define COAP_HEADER_TOKEN_LEN_MASK 0x0F
#define COAP_HEADER_TOKEN_LEN_POSITION 0
#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
/*
* Conservative size limit, as not all options have to be set at the same time.
*/
#ifndef COAP_MAX_HEADER_SIZE
/* Hdr CoT Age Tag Obs Tok Blo strings */
#define COAP_MAX_HEADER_SIZE (4 + 3 + 5 + 1+COAP_ETAG_LEN + 3 + 1+COAP_TOKEN_LEN + 4 + 30) /* 70 */
#endif /* COAP_MAX_HEADER_SIZE */
#define COAP_MAX_PACKET_SIZE (COAP_MAX_HEADER_SIZE + REST_MAX_CHUNK_SIZE)
/* 0/14 48 for IPv6 (28 for IPv4) */
#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_IPUDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for REST_MAX_CHUNK_SIZE"
#endif
/*
* Maximum number of failed request attempts before action
*/
#ifndef COAP_MAX_ATTEMPTS
#define COAP_MAX_ATTEMPTS 4
#endif /* COAP_MAX_ATTEMPTS */
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
/* Bitmap for set options */
enum { OPTION_MAP_SIZE = sizeof(uint8_t) * 8 };
#define SET_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] |= 1 << (opt % OPTION_MAP_SIZE))
#define IS_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] & (1 << (opt % OPTION_MAP_SIZE)))
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a) : (b))
#endif /* MIN */
/* CoAP message types */
typedef enum {
COAP_TYPE_CON, /* confirmables */
COAP_TYPE_NON, /* non-confirmables */
COAP_TYPE_ACK, /* acknowledgements */
COAP_TYPE_RST /* reset */
} coap_message_type_t;
/* CoAP request method codes */
typedef enum {
COAP_GET = 1,
COAP_POST,
COAP_PUT,
COAP_DELETE
} coap_method_t;
/* CoAP response codes */
typedef enum {
NO_ERROR = 0,
CREATED_2_01 = 65, /* CREATED */
DELETED_2_02 = 66, /* DELETED */
VALID_2_03 = 67, /* NOT_MODIFIED */
CHANGED_2_04 = 68, /* CHANGED */
CONTENT_2_05 = 69, /* OK */
BAD_REQUEST_4_00 = 128, /* BAD_REQUEST */
UNAUTHORIZED_4_01 = 129, /* UNAUTHORIZED */
BAD_OPTION_4_02 = 130, /* BAD_OPTION */
FORBIDDEN_4_03 = 131, /* FORBIDDEN */
NOT_FOUND_4_04 = 132, /* NOT_FOUND */
METHOD_NOT_ALLOWED_4_05 = 133, /* METHOD_NOT_ALLOWED */
NOT_ACCEPTABLE_4_06 = 134, /* NOT_ACCEPTABLE */
PRECONDITION_FAILED_4_12 = 140, /* BAD_REQUEST */
REQUEST_ENTITY_TOO_LARGE_4_13 = 141, /* REQUEST_ENTITY_TOO_LARGE */
UNSUPPORTED_MEDIA_TYPE_4_15 = 143, /* UNSUPPORTED_MEDIA_TYPE */
INTERNAL_SERVER_ERROR_5_00 = 160, /* INTERNAL_SERVER_ERROR */
NOT_IMPLEMENTED_5_01 = 161, /* NOT_IMPLEMENTED */
BAD_GATEWAY_5_02 = 162, /* BAD_GATEWAY */
SERVICE_UNAVAILABLE_5_03 = 163, /* SERVICE_UNAVAILABLE */
GATEWAY_TIMEOUT_5_04 = 164, /* GATEWAY_TIMEOUT */
PROXYING_NOT_SUPPORTED_5_05 = 165, /* PROXYING_NOT_SUPPORTED */
/* Erbium errors */
MEMORY_ALLOCATION_ERROR = 192,
PACKET_SERIALIZATION_ERROR,
/* Erbium hooks */
MANUAL_RESPONSE,
PING_RESPONSE
} coap_status_t;
/* CoAP header options */
typedef enum {
COAP_OPTION_IF_MATCH = 1, /* 0-8 B */
COAP_OPTION_URI_HOST = 3, /* 1-255 B */
COAP_OPTION_ETAG = 4, /* 1-8 B */
COAP_OPTION_IF_NONE_MATCH = 5, /* 0 B */
COAP_OPTION_OBSERVE = 6, /* 0-3 B */
COAP_OPTION_URI_PORT = 7, /* 0-2 B */
COAP_OPTION_LOCATION_PATH = 8, /* 0-255 B */
COAP_OPTION_URI_PATH = 11, /* 0-255 B */
COAP_OPTION_CONTENT_TYPE = 12, /* 0-2 B */
COAP_OPTION_MAX_AGE = 14, /* 0-4 B */
COAP_OPTION_URI_QUERY = 15, /* 0-270 B */
COAP_OPTION_ACCEPT = 16, /* 0-2 B */
COAP_OPTION_LOCATION_QUERY = 20, /* 1-270 B */
COAP_OPTION_BLOCK2 = 23, /* 1-3 B */
COAP_OPTION_BLOCK1 = 27, /* 1-3 B */
COAP_OPTION_SIZE = 28, /* 0-4 B */
COAP_OPTION_PROXY_URI = 35, /* 1-270 B */
} coap_option_t;
/* CoAP Content-Types */
typedef enum {
TEXT_PLAIN = 0,
TEXT_XML = 1, /* Indented types are not in the initial registry. */
TEXT_CSV = 2,
TEXT_HTML = 3,
IMAGE_GIF = 21,
IMAGE_JPEG = 22,
IMAGE_PNG = 23,
IMAGE_TIFF = 24,
AUDIO_RAW = 25,
VIDEO_RAW = 26,
APPLICATION_LINK_FORMAT = 40,
APPLICATION_XML = 41,
APPLICATION_OCTET_STREAM = 42,
APPLICATION_RDF_XML = 43,
APPLICATION_SOAP_XML = 44,
APPLICATION_ATOM_XML = 45,
APPLICATION_XMPP_XML = 46,
APPLICATION_EXI = 47,
APPLICATION_FASTINFOSET = 48,
APPLICATION_SOAP_FASTINFOSET = 49,
APPLICATION_JSON = 50,
APPLICATION_X_OBIX_BINARY = 51
} coap_content_type_t;
/* Parsed message struct */
typedef struct {
uint8_t *buffer; /* pointer to CoAP header / incoming packet buffer / memory to serialize packet */
uint8_t version;
coap_message_type_t type;
uint8_t code;
uint16_t mid;
uint8_t options[COAP_OPTION_PROXY_URI / OPTION_MAP_SIZE + 1]; /* Bitmap to check if option is set */
coap_content_type_t content_type; /* Parse options once and store; allows setting options in random order */
uint32_t max_age;
size_t proxy_uri_len;
const char *proxy_uri;
uint8_t etag_len;
uint8_t etag[COAP_ETAG_LEN];
size_t uri_host_len;
const char *uri_host;
size_t location_path_len;
const char *location_path;
uint16_t uri_port;
size_t location_query_len;
const char *location_query;
size_t uri_path_len;
const char *uri_path;
uint16_t observe;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint8_t accept_num;
uint16_t accept[COAP_MAX_ACCEPT_NUM];
uint8_t if_match_len;
uint8_t if_match[COAP_ETAG_LEN];
uint32_t block2_num;
uint8_t block2_more;
uint16_t block2_size;
uint32_t block2_offset;
uint32_t block1_num;
uint8_t block1_more;
uint16_t block1_size;
uint32_t block1_offset;
uint32_t size;
size_t uri_query_len;
const char *uri_query;
uint8_t if_none_match;
uint16_t payload_len;
uint8_t *payload;
} coap_packet_t;
/* Option format serialization*/
#define COAP_SERIALIZE_INT_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" [%u]\n", coap_pkt->field); \
option += coap_serialize_int_option(number, current_number, option, coap_pkt->field); \
current_number = number; \
}
#define COAP_SERIALIZE_BYTE_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->field##_len, \
coap_pkt->field[0], \
coap_pkt->field[1], \
coap_pkt->field[2], \
coap_pkt->field[3], \
coap_pkt->field[4], \
coap_pkt->field[5], \
coap_pkt->field[6], \
coap_pkt->field[7] \
); /*FIXME always prints 8 bytes */ \
option += coap_serialize_array_option(number, current_number, option, coap_pkt->field, coap_pkt->field##_len, '\0'); \
current_number = number; \
}
#define COAP_SERIALIZE_STRING_OPTION(number, field, splitter, text) \
if (IS_OPTION(coap_pkt, number)) { \
PRINTF(text" [%.*s]\n", coap_pkt->field##_len, coap_pkt->field); \
option += coap_serialize_array_option(number, current_number, option, (uint8_t *) coap_pkt->field, coap_pkt->field##_len, splitter); \
current_number = number; \
}
#define COAP_SERIALIZE_ACCEPT_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) { \
int i; \
for (i=0; i<coap_pkt->field##_num; ++i) \
{ \
PRINTF(text" [%u]\n", coap_pkt->field[i]); \
option += coap_serialize_int_option(number, current_number, option, coap_pkt->field[i]); \
current_number = number; \
} \
}
#define COAP_SERIALIZE_BLOCK_OPTION(number, field, text) \
if (IS_OPTION(coap_pkt, number)) \
{ \
PRINTF(text" [%lu%s (%u B/blk)]\n", coap_pkt->field##_num, coap_pkt->field##_more ? "+" : "", coap_pkt->field##_size); \
uint32_t block = coap_pkt->field##_num << 4; \
if (coap_pkt->field##_more) block |= 0x8; \
block |= 0xF & coap_log_2(coap_pkt->field##_size/16); \
PRINTF(text" encoded: 0x%lX\n", block); \
option += coap_serialize_int_option(number, current_number, option, block); \
current_number = number; \
}
/* To store error code and human-readable payload */
extern coap_status_t coap_error_code;
extern char *coap_error_message;
void coap_init_connection(uint16_t port);
uint16_t coap_get_mid(void);
void coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t mid);
size_t coap_serialize_message(void *packet, uint8_t *buffer);
void coap_send_message(uip_ipaddr_t *addr, uint16_t port, uint8_t *data, uint16_t length);
coap_status_t coap_parse_message(void *request, uint8_t *data, uint16_t data_len);
int coap_get_query_variable(void *packet, const char *name, const char **output);
int coap_get_post_variable(void *packet, const char *name, const char **output);
/*-----------------------------------------------------------------------------------*/
int coap_set_status_code(void *packet, unsigned int code);
unsigned int coap_get_header_content_type(void *packet);
int coap_set_header_content_type(void *packet, unsigned int content_type);
int coap_get_header_accept(void *packet, const uint16_t **accept);
int coap_set_header_accept(void *packet, uint16_t accept);
int coap_get_header_max_age(void *packet, uint32_t *age);
int coap_set_header_max_age(void *packet, uint32_t age);
int coap_get_header_etag(void *packet, const uint8_t **etag);
int coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_match(void *packet, const uint8_t **etag);
int coap_set_header_if_match(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_none_match(void *packet);
int coap_set_header_if_none_match(void *packet);
int coap_get_header_token(void *packet, const uint8_t **token);
int coap_set_header_token(void *packet, const uint8_t *token, size_t token_len);
int coap_get_header_proxy_uri(void *packet, const char **uri); /* In-place string might not be 0-terminated. */
int coap_set_header_proxy_uri(void *packet, const char *uri);
int coap_get_header_uri_host(void *packet, const char **host); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_host(void *packet, const char *host);
int coap_get_header_uri_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_path(void *packet, const char *path);
int coap_get_header_uri_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_uri_query(void *packet, const char *query);
int coap_get_header_location_path(void *packet, const char **path); /* In-place string might not be 0-terminated. */
int coap_set_header_location_path(void *packet, const char *path); /* Also splits optional query into Location-Query option. */
int coap_get_header_location_query(void *packet, const char **query); /* In-place string might not be 0-terminated. */
int coap_set_header_location_query(void *packet, const char *query);
int coap_get_header_observe(void *packet, uint32_t *observe);
int coap_set_header_observe(void *packet, uint32_t observe);
int coap_get_header_block2(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block2(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_block1(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset);
int coap_set_header_block1(void *packet, uint32_t num, uint8_t more, uint16_t size);
int coap_get_header_size(void *packet, uint32_t *size);
int coap_set_header_size(void *packet, uint32_t size);
int coap_get_payload(void *packet, const uint8_t **payload);
int coap_set_payload(void *packet, const void *payload, size_t length);
#endif /* COAP_13_H_ */

4
apps/er-coap/Makefile.er-coap Executable file
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@ -0,0 +1,4 @@
er-coap_src = er-coap.c er-coap-engine.c er-coap-transactions.c er-coap-observe.c er-coap-separate.c er-coap-res-well-known-core.c er-coap-block1.c
# Erbium will implement the REST Engine
CFLAGS += -DREST=coap_rest_implementation

119
apps/er-coap/er-coap-block1.c Normal file
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@ -0,0 +1,119 @@
/*
* Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for block 1 handling
* \author
* Lars Schmertmann <SmallLars@t-online.de>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap.h"
#include "er-coap-block1.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
/*----------------------------------------------------------------------------*/
/**
* \brief Block 1 support within a coap-ressource
*
* This function will help you to use block 1. If target is null
* error handling and response configuration is active. On return
* value 0, the last block was recived, while on return value 1
* more blocks will follow. With target, len and maxlen this
* function will assemble the blocks.
*
* You can find an example in:
* examples/er-rest-example/resources/res-b1-sep-b2.c
*
* \param request Request pointer from the handler
* \param response Response pointer from the handler
* \param target Pointer to the buffer where the request payload can be assembled
* \param len Pointer to the variable, where the function stores the actual length
* \param max_len Length of the "target"-Buffer
*
* \return 0 if initialisation was successful
* -1 if initialisation failed
*/
int
coap_block1_handler(void *request, void *response, uint8_t *target, size_t *len, size_t max_len)
{
const uint8_t *payload = 0;
int pay_len = REST.get_request_payload(request, &payload);
if(!pay_len || !payload) {
erbium_status_code = REST.status.BAD_REQUEST;
coap_error_message = "NoPayload";
return -1;
}
coap_packet_t *packet = (coap_packet_t *)request;
if(packet->block1_offset + pay_len > max_len) {
erbium_status_code = REST.status.REQUEST_ENTITY_TOO_LARGE;
coap_error_message = "Message to big";
return -1;
}
if(target && len) {
memcpy(target + packet->block1_offset, payload, pay_len);
*len = packet->block1_offset + pay_len;
}
if(IS_OPTION(packet, COAP_OPTION_BLOCK1)) {
PRINTF("Blockwise: block 1 request: Num: %u, More: %u, Size: %u, Offset: %u\n",
packet->block1_num,
packet->block1_more,
packet->block1_size,
packet->block1_offset);
coap_set_header_block1(response, packet->block1_num, packet->block1_more, packet->block1_size);
if(packet->block1_more) {
coap_set_status_code(response, CONTINUE_2_31);
return 1;
}
}
return 0;
}

49
apps/er-coap-07/er-coap-07-transactions.h → apps/er-coap/er-coap-block1.h
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,48 +31,17 @@
/** /**
* \file * \file
* CoAP module for reliable transport * CoAP module for block 1 handling
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Lars Schmertmann <SmallLars@t-online.de>
*/ */
#ifndef COAP_TRANSACTIONS_H_ #ifndef COAP_BLOCK1_H_
#define COAP_TRANSACTIONS_H_ #define COAP_BLOCK1_H_
#include "er-coap-07.h" #include <stddef.h>
#include <stdint.h>
/* int coap_block1_handler(void *request, void *response, uint8_t *target, size_t *len, size_t max_len);
* The number of concurrent messages that can be stored for retransmission in the transaction layer.
*/
#ifndef COAP_MAX_OPEN_TRANSACTIONS
#define COAP_MAX_OPEN_TRANSACTIONS 4
#endif /* COAP_MAX_OPEN_TRANSACTIONS */
/* container for transactions with message buffer and retransmission info */ #endif /* COAP_BLOCK1_H_ */
typedef struct coap_transaction {
struct coap_transaction *next; /* for LIST */
uint16_t mid;
struct etimer retrans_timer;
uint8_t retrans_counter;
uip_ipaddr_t addr;
uint16_t port;
restful_response_handler callback;
void *callback_data;
uint16_t packet_len;
uint8_t packet[COAP_MAX_PACKET_SIZE+1]; /* +1 for the terminating '\0' to simply and savely use snprintf(buf, len+1, "", ...) in the resource handler. */
} coap_transaction_t;
void coap_register_as_transaction_handler();
coap_transaction_t *coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port);
void coap_send_transaction(coap_transaction_t *t);
void coap_clear_transaction(coap_transaction_t *t);
coap_transaction_t *coap_get_transaction_by_mid(uint16_t mid);
void coap_check_transactions();
#endif /* COAP_TRANSACTIONS_H_ */

62
apps/er-coap-12/er-coap-12-transactions.h → apps/er-coap/er-coap-conf.h
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,48 +31,44 @@
/** /**
* \file * \file
* CoAP module for reliable transport * Collection of default configuration values.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_TRANSACTIONS_H_ #ifndef ER_COAP_CONF_H_
#define COAP_TRANSACTIONS_H_ #define ER_COAP_CONF_H_
#include "er-coap-12.h" /* Features that can be disabled to achieve smaller memory footprint */
#define COAP_LINK_FORMAT_FILTERING 0
#define COAP_PROXY_OPTION_PROCESSING 0
/* /* Listening port for the CoAP REST Engine */
* The number of concurrent messages that can be stored for retransmission in the transaction layer. #ifndef COAP_SERVER_PORT
*/ #define COAP_SERVER_PORT COAP_DEFAULT_PORT
#endif
/* The number of concurrent messages that can be stored for retransmission in the transaction layer. */
#ifndef COAP_MAX_OPEN_TRANSACTIONS #ifndef COAP_MAX_OPEN_TRANSACTIONS
#define COAP_MAX_OPEN_TRANSACTIONS 4 #define COAP_MAX_OPEN_TRANSACTIONS 4
#endif /* COAP_MAX_OPEN_TRANSACTIONS */ #endif /* COAP_MAX_OPEN_TRANSACTIONS */
/* container for transactions with message buffer and retransmission info */ /* Maximum number of failed request attempts before action */
typedef struct coap_transaction { #ifndef COAP_MAX_ATTEMPTS
struct coap_transaction *next; /* for LIST */ #define COAP_MAX_ATTEMPTS 4
#endif /* COAP_MAX_ATTEMPTS */
uint16_t mid; /* Conservative size limit, as not all options have to be set at the same time. Check when Proxy-Uri option is used */
struct etimer retrans_timer; #ifndef COAP_MAX_HEADER_SIZE /* Hdr CoF If-Match Obs Blo strings */
uint8_t retrans_counter; #define COAP_MAX_HEADER_SIZE (4 + COAP_TOKEN_LEN + 3 + 1 + COAP_ETAG_LEN + 4 + 4 + 30) /* 65 */
#endif /* COAP_MAX_HEADER_SIZE */
uip_ipaddr_t addr; /* Number of observer slots (each takes abot xxx bytes) */
uint16_t port; #ifndef COAP_MAX_OBSERVERS
#define COAP_MAX_OBSERVERS COAP_MAX_OPEN_TRANSACTIONS - 1
#endif /* COAP_MAX_OBSERVERS */
restful_response_handler callback; /* Interval in notifies in which NON notifies are changed to CON notifies to check client. */
void *callback_data; #define COAP_OBSERVE_REFRESH_INTERVAL 20
uint16_t packet_len; #endif /* ER_COAP_CONF_H_ */
uint8_t packet[COAP_MAX_PACKET_SIZE+1]; /* +1 for the terminating '\0' to simply and savely use snprintf(buf, len+1, "", ...) in the resource handler. */
} coap_transaction_t;
void coap_register_as_transaction_handler();
coap_transaction_t *coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port);
void coap_send_transaction(coap_transaction_t *t);
void coap_clear_transaction(coap_transaction_t *t);
coap_transaction_t *coap_get_transaction_by_mid(uint16_t mid);
void coap_check_transactions();
#endif /* COAP_TRANSACTIONS_H_ */

166
apps/er-coap/er-coap-constants.h Normal file
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@ -0,0 +1,166 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Collection of constants specified in the CoAP standard.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef ER_COAP_CONSTANTS_H_
#define ER_COAP_CONSTANTS_H_
#define COAP_DEFAULT_PORT 5683
#define COAP_DEFAULT_MAX_AGE 60
#define COAP_RESPONSE_TIMEOUT 3
#define COAP_RESPONSE_RANDOM_FACTOR 1.5
#define COAP_MAX_RETRANSMIT 4
#define COAP_HEADER_LEN 4 /* | version:0x03 type:0x0C tkl:0xF0 | code | mid:0x00FF | mid:0xFF00 | */
#define COAP_TOKEN_LEN 8 /* The maximum number of bytes for the Token */
#define COAP_ETAG_LEN 8 /* The maximum number of bytes for the ETag */
#define COAP_HEADER_VERSION_MASK 0xC0
#define COAP_HEADER_VERSION_POSITION 6
#define COAP_HEADER_TYPE_MASK 0x30
#define COAP_HEADER_TYPE_POSITION 4
#define COAP_HEADER_TOKEN_LEN_MASK 0x0F
#define COAP_HEADER_TOKEN_LEN_POSITION 0
#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
/* CoAP message types */
typedef enum {
COAP_TYPE_CON, /* confirmables */
COAP_TYPE_NON, /* non-confirmables */
COAP_TYPE_ACK, /* acknowledgements */
COAP_TYPE_RST /* reset */
} coap_message_type_t;
/* CoAP request method codes */
typedef enum {
COAP_GET = 1,
COAP_POST,
COAP_PUT,
COAP_DELETE
} coap_method_t;
/* CoAP response codes */
typedef enum {
NO_ERROR = 0,
CREATED_2_01 = 65, /* CREATED */
DELETED_2_02 = 66, /* DELETED */
VALID_2_03 = 67, /* NOT_MODIFIED */
CHANGED_2_04 = 68, /* CHANGED */
CONTENT_2_05 = 69, /* OK */
CONTINUE_2_31 = 95, /* CONTINUE */
BAD_REQUEST_4_00 = 128, /* BAD_REQUEST */
UNAUTHORIZED_4_01 = 129, /* UNAUTHORIZED */
BAD_OPTION_4_02 = 130, /* BAD_OPTION */
FORBIDDEN_4_03 = 131, /* FORBIDDEN */
NOT_FOUND_4_04 = 132, /* NOT_FOUND */
METHOD_NOT_ALLOWED_4_05 = 133, /* METHOD_NOT_ALLOWED */
NOT_ACCEPTABLE_4_06 = 134, /* NOT_ACCEPTABLE */
PRECONDITION_FAILED_4_12 = 140, /* BAD_REQUEST */
REQUEST_ENTITY_TOO_LARGE_4_13 = 141, /* REQUEST_ENTITY_TOO_LARGE */
UNSUPPORTED_MEDIA_TYPE_4_15 = 143, /* UNSUPPORTED_MEDIA_TYPE */
INTERNAL_SERVER_ERROR_5_00 = 160, /* INTERNAL_SERVER_ERROR */
NOT_IMPLEMENTED_5_01 = 161, /* NOT_IMPLEMENTED */
BAD_GATEWAY_5_02 = 162, /* BAD_GATEWAY */
SERVICE_UNAVAILABLE_5_03 = 163, /* SERVICE_UNAVAILABLE */
GATEWAY_TIMEOUT_5_04 = 164, /* GATEWAY_TIMEOUT */
PROXYING_NOT_SUPPORTED_5_05 = 165, /* PROXYING_NOT_SUPPORTED */
/* Erbium errors */
MEMORY_ALLOCATION_ERROR = 192,
PACKET_SERIALIZATION_ERROR,
/* Erbium hooks */
MANUAL_RESPONSE,
PING_RESPONSE
} coap_status_t;
/* CoAP header option numbers */
typedef enum {
COAP_OPTION_IF_MATCH = 1, /* 0-8 B */
COAP_OPTION_URI_HOST = 3, /* 1-255 B */
COAP_OPTION_ETAG = 4, /* 1-8 B */
COAP_OPTION_IF_NONE_MATCH = 5, /* 0 B */
COAP_OPTION_OBSERVE = 6, /* 0-3 B */
COAP_OPTION_URI_PORT = 7, /* 0-2 B */
COAP_OPTION_LOCATION_PATH = 8, /* 0-255 B */
COAP_OPTION_URI_PATH = 11, /* 0-255 B */
COAP_OPTION_CONTENT_FORMAT = 12, /* 0-2 B */
COAP_OPTION_MAX_AGE = 14, /* 0-4 B */
COAP_OPTION_URI_QUERY = 15, /* 0-255 B */
COAP_OPTION_ACCEPT = 17, /* 0-2 B */
COAP_OPTION_LOCATION_QUERY = 20, /* 0-255 B */
COAP_OPTION_BLOCK2 = 23, /* 1-3 B */
COAP_OPTION_BLOCK1 = 27, /* 1-3 B */
COAP_OPTION_SIZE2 = 28, /* 0-4 B */
COAP_OPTION_PROXY_URI = 35, /* 1-1034 B */
COAP_OPTION_PROXY_SCHEME = 39, /* 1-255 B */
COAP_OPTION_SIZE1 = 60, /* 0-4 B */
} coap_option_t;
/* CoAP Content-Formats */
typedef enum {
TEXT_PLAIN = 0,
TEXT_XML = 1,
TEXT_CSV = 2,
TEXT_HTML = 3,
IMAGE_GIF = 21,
IMAGE_JPEG = 22,
IMAGE_PNG = 23,
IMAGE_TIFF = 24,
AUDIO_RAW = 25,
VIDEO_RAW = 26,
APPLICATION_LINK_FORMAT = 40,
APPLICATION_XML = 41,
APPLICATION_OCTET_STREAM = 42,
APPLICATION_RDF_XML = 43,
APPLICATION_SOAP_XML = 44,
APPLICATION_ATOM_XML = 45,
APPLICATION_XMPP_XML = 46,
APPLICATION_EXI = 47,
APPLICATION_FASTINFOSET = 48,
APPLICATION_SOAP_FASTINFOSET = 49,
APPLICATION_JSON = 50,
APPLICATION_X_OBIX_BINARY = 51
} coap_content_format_t;
#endif /* ER_COAP_CONSTANTS_H_ */

509
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@ -0,0 +1,509 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP implementation for the REST Engine.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "er-coap-engine.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
PROCESS(coap_engine, "CoAP Engine");
/*---------------------------------------------------------------------------*/
/*- Variables ---------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
static service_callback_t service_cbk = NULL;
/*---------------------------------------------------------------------------*/
/*- Internal API ------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
static int
coap_receive(void)
{
erbium_status_code = NO_ERROR;
PRINTF("handle_incoming_data(): received uip_datalen=%u \n",
(uint16_t)uip_datalen());
/* static declaration reduces stack peaks and program code size */
static coap_packet_t message[1]; /* this way the packet can be treated as pointer as usual */
static coap_packet_t response[1];
static coap_transaction_t *transaction = NULL;
if(uip_newdata()) {
PRINTF("receiving UDP datagram from: ");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(":%u\n Length: %u\n", uip_ntohs(UIP_UDP_BUF->srcport),
uip_datalen());
erbium_status_code =
coap_parse_message(message, uip_appdata, uip_datalen());
if(erbium_status_code == NO_ERROR) {
/*TODO duplicates suppression, if required by application */
PRINTF(" Parsed: v %u, t %u, tkl %u, c %u, mid %u\n", message->version,
message->type, message->token_len, message->code, message->mid);
PRINTF(" URL: %.*s\n", message->uri_path_len, message->uri_path);
PRINTF(" Payload: %.*s\n", message->payload_len, message->payload);
/* handle requests */
if(message->code >= COAP_GET && message->code <= COAP_DELETE) {
/* use transaction buffer for response to confirmable request */
if((transaction =
coap_new_transaction(message->mid, &UIP_IP_BUF->srcipaddr,
UIP_UDP_BUF->srcport))) {
uint32_t block_num = 0;
uint16_t block_size = REST_MAX_CHUNK_SIZE;
uint32_t block_offset = 0;
int32_t new_offset = 0;
/* prepare response */
if(message->type == COAP_TYPE_CON) {
/* reliable CON requests are answered with an ACK */
coap_init_message(response, COAP_TYPE_ACK, CONTENT_2_05,
message->mid);
} else {
/* unreliable NON requests are answered with a NON as well */
coap_init_message(response, COAP_TYPE_NON, CONTENT_2_05,
coap_get_mid());
/* mirror token */
} if(message->token_len) {
coap_set_token(response, message->token, message->token_len);
/* get offset for blockwise transfers */
}
if(coap_get_header_block2
(message, &block_num, NULL, &block_size, &block_offset)) {
PRINTF("Blockwise: block request %lu (%u/%u) @ %lu bytes\n",
block_num, block_size, REST_MAX_CHUNK_SIZE, block_offset);
block_size = MIN(block_size, REST_MAX_CHUNK_SIZE);
new_offset = block_offset;
}
/* invoke resource handler */
if(service_cbk) {
/* call REST framework and check if found and allowed */
if(service_cbk
(message, response, transaction->packet + COAP_MAX_HEADER_SIZE,
block_size, &new_offset)) {
if(erbium_status_code == NO_ERROR) {
/* TODO coap_handle_blockwise(request, response, start_offset, end_offset); */
/* resource is unaware of Block1 */
if(IS_OPTION(message, COAP_OPTION_BLOCK1)
&& response->code < BAD_REQUEST_4_00
&& !IS_OPTION(response, COAP_OPTION_BLOCK1)) {
PRINTF("Block1 NOT IMPLEMENTED\n");
erbium_status_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoBlock1Support";
/* client requested Block2 transfer */
} else if(IS_OPTION(message, COAP_OPTION_BLOCK2)) {
/* unchanged new_offset indicates that resource is unaware of blockwise transfer */
if(new_offset == block_offset) {
PRINTF
("Blockwise: unaware resource with payload length %u/%u\n",
response->payload_len, block_size);
if(block_offset >= response->payload_len) {
PRINTF
("handle_incoming_data(): block_offset >= response->payload_len\n");
response->code = BAD_OPTION_4_02;
coap_set_payload(response, "BlockOutOfScope", 15); /* a const char str[] and sizeof(str) produces larger code size */
} else {
coap_set_header_block2(response, block_num,
response->payload_len -
block_offset > block_size,
block_size);
coap_set_payload(response,
response->payload + block_offset,
MIN(response->payload_len -
block_offset, block_size));
} /* if(valid offset) */
/* resource provides chunk-wise data */
} else {
PRINTF("Blockwise: blockwise resource, new offset %ld\n",
new_offset);
coap_set_header_block2(response, block_num,
new_offset != -1
|| response->payload_len >
block_size, block_size);
if(response->payload_len > block_size) {
coap_set_payload(response, response->payload,
block_size);
}
} /* if(resource aware of blockwise) */
/* Resource requested Block2 transfer */
} else if(new_offset != 0) {
PRINTF
("Blockwise: no block option for blockwise resource, using block size %u\n",
COAP_MAX_BLOCK_SIZE);
coap_set_header_block2(response, 0, new_offset != -1,
COAP_MAX_BLOCK_SIZE);
coap_set_payload(response, response->payload,
MIN(response->payload_len,
COAP_MAX_BLOCK_SIZE));
} /* blockwise transfer handling */
} /* no errors/hooks */
/* successful service callback */
/* serialize response */
}
if(erbium_status_code == NO_ERROR) {
if((transaction->packet_len = coap_serialize_message(response,
transaction->
packet)) ==
0) {
erbium_status_code = PACKET_SERIALIZATION_ERROR;
}
}
} else {
erbium_status_code = NOT_IMPLEMENTED_5_01;
coap_error_message = "NoServiceCallbck"; /* no 'a' to fit into 16 bytes */
} /* if(service callback) */
} else {
erbium_status_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "NoFreeTraBuffer";
} /* if(transaction buffer) */
/* handle responses */
} else {
if(message->type == COAP_TYPE_CON && message->code == 0) {
PRINTF("Received Ping\n");
erbium_status_code = PING_RESPONSE;
} else if(message->type == COAP_TYPE_ACK) {
/* transactions are closed through lookup below */
PRINTF("Received ACK\n");
} else if(message->type == COAP_TYPE_RST) {
PRINTF("Received RST\n");
/* cancel possible subscriptions */
coap_remove_observer_by_mid(&UIP_IP_BUF->srcipaddr,
UIP_UDP_BUF->srcport, message->mid);
}
if((transaction = coap_get_transaction_by_mid(message->mid))) {
/* free transaction memory before callback, as it may create a new transaction */
restful_response_handler callback = transaction->callback;
void *callback_data = transaction->callback_data;
coap_clear_transaction(transaction);
/* check if someone registered for the response */
if(callback) {
callback(callback_data, message);
}
}
/* if(ACKed transaction) */
transaction = NULL;
} /* request or response */
} /* parsed correctly */
/* if(parsed correctly) */
if(erbium_status_code == NO_ERROR) {
if(transaction) {
coap_send_transaction(transaction);
}
} else if(erbium_status_code == MANUAL_RESPONSE) {
PRINTF("Clearing transaction for manual response");
coap_clear_transaction(transaction);
} else {
coap_message_type_t reply_type = COAP_TYPE_ACK;
PRINTF("ERROR %u: %s\n", erbium_status_code, coap_error_message);
coap_clear_transaction(transaction);
if(erbium_status_code == PING_RESPONSE) {
erbium_status_code = 0;
reply_type = COAP_TYPE_RST;
} else if(erbium_status_code >= 192) {
/* set to sendable error code */
erbium_status_code = INTERNAL_SERVER_ERROR_5_00;
/* reuse input buffer for error message */
}
coap_init_message(message, reply_type, erbium_status_code,
message->mid);
coap_set_payload(message, coap_error_message,
strlen(coap_error_message));
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport,
uip_appdata, coap_serialize_message(message,
uip_appdata));
}
}
/* if(new data) */
return erbium_status_code;
}
/*---------------------------------------------------------------------------*/
void
coap_init_engine(void)
{
process_start(&coap_engine, NULL);
}
/*---------------------------------------------------------------------------*/
void
coap_set_service_callback(service_callback_t callback)
{
service_cbk = callback;
}
/*---------------------------------------------------------------------------*/
rest_resource_flags_t
coap_get_rest_method(void *packet)
{
return (rest_resource_flags_t)(1 <<
(((coap_packet_t *)packet)->code - 1));
}
/*---------------------------------------------------------------------------*/
/*- Server Part -------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* the discover resource is automatically included for CoAP */
extern resource_t res_well_known_core;
#ifdef WITH_DTLS
extern resource_t res_dtls;
#endif
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(coap_engine, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting %s receiver...\n", coap_rest_implementation.name);
rest_activate_resource(&res_well_known_core, ".well-known/core");
coap_register_as_transaction_handler();
coap_init_connection(SERVER_LISTEN_PORT);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
coap_receive();
} else if(ev == PROCESS_EVENT_TIMER) {
/* retransmissions are handled here */
coap_check_transactions();
}
} /* while (1) */
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/*- Client Part -------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void
coap_blocking_request_callback(void *callback_data, void *response)
{
struct request_state_t *state = (struct request_state_t *)callback_data;
state->response = (coap_packet_t *)response;
process_poll(state->process);
}
/*---------------------------------------------------------------------------*/
PT_THREAD(coap_blocking_request
(struct request_state_t *state, process_event_t ev,
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
coap_packet_t *request,
blocking_response_handler request_callback))
{
PT_BEGIN(&state->pt);
static uint8_t more;
static uint32_t res_block;
static uint8_t block_error;
state->block_num = 0;
state->response = NULL;
state->process = PROCESS_CURRENT();
more = 0;
res_block = 0;
block_error = 0;
do {
request->mid = coap_get_mid();
if((state->transaction = coap_new_transaction(request->mid, remote_ipaddr,
remote_port))) {
state->transaction->callback = coap_blocking_request_callback;
state->transaction->callback_data = state;
if(state->block_num > 0) {
coap_set_header_block2(request, state->block_num, 0,
REST_MAX_CHUNK_SIZE);
}
state->transaction->packet_len = coap_serialize_message(request,
state->
transaction->
packet);
coap_send_transaction(state->transaction);
PRINTF("Requested #%lu (MID %u)\n", state->block_num, request->mid);
PT_YIELD_UNTIL(&state->pt, ev == PROCESS_EVENT_POLL);
if(!state->response) {
PRINTF("Server not responding\n");
PT_EXIT(&state->pt);
}
coap_get_header_block2(state->response, &res_block, &more, NULL, NULL);
PRINTF("Received #%lu%s (%u bytes)\n", res_block, more ? "+" : "",
state->response->payload_len);
if(res_block == state->block_num) {
request_callback(state->response);
++(state->block_num);
} else {
PRINTF("WRONG BLOCK %lu/%lu\n", res_block, state->block_num);
++block_error;
}
} else {
PRINTF("Could not allocate transaction buffer");
PT_EXIT(&state->pt);
}
} while(more && block_error < COAP_MAX_ATTEMPTS);
PT_END(&state->pt);
}
/*---------------------------------------------------------------------------*/
/*- REST Engine Interface ---------------------------------------------------*/
/*---------------------------------------------------------------------------*/
const struct rest_implementation coap_rest_implementation = {
"CoAP-18",
coap_init_engine,
coap_set_service_callback,
coap_get_header_uri_path,
coap_get_rest_method,
coap_set_status_code,
coap_get_header_content_format,
coap_set_header_content_format,
coap_get_header_accept,
coap_get_header_size2,
coap_set_header_size2,
coap_get_header_max_age,
coap_set_header_max_age,
coap_set_header_etag,
coap_get_header_if_match,
coap_get_header_if_none_match,
coap_get_header_uri_host,
coap_set_header_location_path,
coap_get_payload,
coap_set_payload,
coap_get_header_uri_query,
coap_get_query_variable,
coap_get_post_variable,
coap_notify_observers,
coap_observe_handler,
{
CONTENT_2_05,
CREATED_2_01,
CHANGED_2_04,
DELETED_2_02,
VALID_2_03,
BAD_REQUEST_4_00,
UNAUTHORIZED_4_01,
BAD_OPTION_4_02,
FORBIDDEN_4_03,
NOT_FOUND_4_04,
METHOD_NOT_ALLOWED_4_05,
NOT_ACCEPTABLE_4_06,
REQUEST_ENTITY_TOO_LARGE_4_13,
UNSUPPORTED_MEDIA_TYPE_4_15,
INTERNAL_SERVER_ERROR_5_00,
NOT_IMPLEMENTED_5_01,
BAD_GATEWAY_5_02,
SERVICE_UNAVAILABLE_5_03,
GATEWAY_TIMEOUT_5_04,
PROXYING_NOT_SUPPORTED_5_05
},
{
TEXT_PLAIN,
TEXT_XML,
TEXT_CSV,
TEXT_HTML,
IMAGE_GIF,
IMAGE_JPEG,
IMAGE_PNG,
IMAGE_TIFF,
AUDIO_RAW,
VIDEO_RAW,
APPLICATION_LINK_FORMAT,
APPLICATION_XML,
APPLICATION_OCTET_STREAM,
APPLICATION_RDF_XML,
APPLICATION_SOAP_XML,
APPLICATION_ATOM_XML,
APPLICATION_XMPP_XML,
APPLICATION_EXI,
APPLICATION_FASTINFOSET,
APPLICATION_SOAP_FASTINFOSET,
APPLICATION_JSON,
APPLICATION_X_OBIX_BINARY
}
};
/*---------------------------------------------------------------------------*/

66
apps/er-coap-03/er-coap-03-engine.h → apps/er-coap/er-coap-engine.h
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,61 +31,55 @@
/** /**
* \file * \file
* CoAP implementation of the REST Engine * CoAP implementation for the REST Engine.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_SERVER_H_ #ifndef ER_COAP_ENGINE_H_
#define COAP_SERVER_H_ #define ER_COAP_ENGINE_H_
#if !defined(REST)
#error "Define REST to \"coap_rest_implementation\""
#endif
#include "er-coap-03.h"
#include "er-coap-03-transactions.h"
#include "er-coap-03-observing.h"
#include "pt.h" #include "pt.h"
#include "er-coap.h"
/* Declare server process */ #include "er-coap-transactions.h"
PROCESS_NAME(coap_receiver); #include "er-coap-observe.h"
#include "er-coap-separate.h"
#define SERVER_LISTEN_PORT UIP_HTONS(COAP_SERVER_PORT) #define SERVER_LISTEN_PORT UIP_HTONS(COAP_SERVER_PORT)
typedef coap_packet_t rest_request_t; typedef coap_packet_t rest_request_t;
typedef coap_packet_t rest_response_t; typedef coap_packet_t rest_response_t;
extern const struct rest_implementation coap_rest_implementation; void coap_init_engine(void);
void coap_receiver_init(void); /*---------------------------------------------------------------------------*/
/*- Client Part -------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/*- Client part ---------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
struct request_state_t { struct request_state_t {
struct pt pt; struct pt pt;
struct process *process; struct process *process;
coap_transaction_t *transaction; coap_transaction_t *transaction;
coap_packet_t *response; coap_packet_t *response;
uint32_t block_num; uint32_t block_num;
}; };
typedef void (*blocking_response_handler) (void* response); typedef void (*blocking_response_handler)(void *response);
PT_THREAD(coap_blocking_request(struct request_state_t *state, process_event_t ev, PT_THREAD(coap_blocking_request
uip_ipaddr_t *remote_ipaddr, uint16_t remote_port, (struct request_state_t *state, process_event_t ev,
coap_packet_t *request, uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
blocking_response_handler request_callback)); coap_packet_t *request,
blocking_response_handler request_callback));
#define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \ #define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \
static struct request_state_t request_state; \ { \
PT_SPAWN(process_pt, &request_state.pt, \ static struct request_state_t request_state; \
PT_SPAWN(process_pt, &request_state.pt, \
coap_blocking_request(&request_state, ev, \ coap_blocking_request(&request_state, ev, \
server_addr, server_port, \ server_addr, server_port, \
request, chunk_handler) \ request, chunk_handler) \
); ); \
/*-----------------------------------------------------------------------------------*/ }
/*---------------------------------------------------------------------------*/
#endif /* COAP_SERVER_H_ */ #endif /* ER_COAP_ENGINE_H_ */

272
apps/er-coap/er-coap-observe.c Normal file
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@ -0,0 +1,272 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* CoAP module for observing resources (draft-ietf-core-observe-11).
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <string.h>
#include "er-coap-observe.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
/*---------------------------------------------------------------------------*/
MEMB(observers_memb, coap_observer_t, COAP_MAX_OBSERVERS);
LIST(observers_list);
/*---------------------------------------------------------------------------*/
/*- Internal API ------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
coap_observer_t *
coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token,
size_t token_len, const char *uri)
{
/* Remove existing observe relationship, if any. */
coap_remove_observer_by_uri(addr, port, uri);
coap_observer_t *o = memb_alloc(&observers_memb);
if(o) {
o->url = uri;
uip_ipaddr_copy(&o->addr, addr);
o->port = port;
o->token_len = token_len;
memcpy(o->token, token, token_len);
o->last_mid = 0;
PRINTF("Adding observer (%u/%u) for /%s [0x%02X%02X]\n",
list_length(observers_list) + 1, COAP_MAX_OBSERVERS,
o->url, o->token[0], o->token[1]);
list_add(observers_list, o);
}
return o;
}
/*---------------------------------------------------------------------------*/
/*- Removal -----------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void
coap_remove_observer(coap_observer_t *o)
{
PRINTF("Removing observer for /%s [0x%02X%02X]\n", o->url, o->token[0],
o->token[1]);
memb_free(&observers_memb, o);
list_remove(observers_list, o);
}
/*---------------------------------------------------------------------------*/
int
coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port)
{
int removed = 0;
coap_observer_t *obs = NULL;
for(obs = (coap_observer_t *)list_head(observers_list); obs;
obs = obs->next) {
PRINTF("Remove check client ");
PRINT6ADDR(addr);
PRINTF(":%u\n", port);
if(uip_ipaddr_cmp(&obs->addr, addr) && obs->port == port) {
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*---------------------------------------------------------------------------*/
int
coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port,
uint8_t *token, size_t token_len)
{
int removed = 0;
coap_observer_t *obs = NULL;
for(obs = (coap_observer_t *)list_head(observers_list); obs;
obs = obs->next) {
PRINTF("Remove check Token 0x%02X%02X\n", token[0], token[1]);
if(uip_ipaddr_cmp(&obs->addr, addr) && obs->port == port
&& obs->token_len == token_len
&& memcmp(obs->token, token, token_len) == 0) {
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*---------------------------------------------------------------------------*/
int
coap_remove_observer_by_uri(uip_ipaddr_t *addr, uint16_t port,
const char *uri)
{
int removed = 0;
coap_observer_t *obs = NULL;
for(obs = (coap_observer_t *)list_head(observers_list); obs;
obs = obs->next) {
PRINTF("Remove check URL %p\n", uri);
if((addr == NULL
|| (uip_ipaddr_cmp(&obs->addr, addr) && obs->port == port))
&& (obs->url == uri || memcmp(obs->url, uri, strlen(obs->url)) == 0)) {
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*---------------------------------------------------------------------------*/
int
coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid)
{
int removed = 0;
coap_observer_t *obs = NULL;
for(obs = (coap_observer_t *)list_head(observers_list); obs;
obs = obs->next) {
PRINTF("Remove check MID %u\n", mid);
if(uip_ipaddr_cmp(&obs->addr, addr) && obs->port == port
&& obs->last_mid == mid) {
coap_remove_observer(obs);
removed++;
}
}
return removed;
}
/*---------------------------------------------------------------------------*/
/*- Notification ------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void
coap_notify_observers(resource_t *resource)
{
/* build notification */
coap_packet_t notification[1]; /* this way the packet can be treated as pointer as usual */
coap_init_message(notification, COAP_TYPE_NON, CONTENT_2_05, 0);
coap_observer_t *obs = NULL;
PRINTF("Observe: Notification from %s\n", resource->url);
/* iterate over observers */
for(obs = (coap_observer_t *)list_head(observers_list); obs;
obs = obs->next) {
if(obs->url == resource->url) { /* using RESOURCE url pointer as handle */
coap_transaction_t *transaction = NULL;
/*TODO implement special transaction for CON, sharing the same buffer to allow for more observers */
if((transaction = coap_new_transaction(coap_get_mid(), &obs->addr, obs->port))) {
if(obs->obs_counter % COAP_OBSERVE_REFRESH_INTERVAL == 0) {
PRINTF(" Force Confirmable for\n");
notification->type = COAP_TYPE_CON;
}
PRINTF(" Observer ");
PRINT6ADDR(&obs->addr);
PRINTF(":%u\n", obs->port);
/* update last MID for RST matching */
obs->last_mid = transaction->mid;
/* prepare response */
notification->mid = transaction->mid;
resource->get_handler(NULL, notification,
transaction->packet + COAP_MAX_HEADER_SIZE,
REST_MAX_CHUNK_SIZE, NULL);
if(notification->code < BAD_REQUEST_4_00) {
coap_set_header_observe(notification, (obs->obs_counter)++);
}
coap_set_token(notification, obs->token, obs->token_len);
transaction->packet_len =
coap_serialize_message(notification, transaction->packet);
coap_send_transaction(transaction);
}
}
}
}
/*---------------------------------------------------------------------------*/
void
coap_observe_handler(resource_t *resource, void *request, void *response)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
coap_packet_t *const coap_res = (coap_packet_t *)response;
static char content[16];
if(coap_req->code == COAP_GET && coap_res->code < 128) { /* GET request and response without error code */
if(IS_OPTION(coap_req, COAP_OPTION_OBSERVE)) {
if(coap_req->observe == 0) {
if(coap_add_observer(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport,
coap_req->token, coap_req->token_len,
resource->url)) {
coap_set_header_observe(coap_res, 0);
/*
* Following payload is for demonstration purposes only.
* A subscription should return the same representation as a normal GET.
* Uncomment if you want an information about the avaiable observers.
*/
/*
* coap_set_payload(coap_res,
* content,
* snprintf(content, sizeof(content), "Added %u/%u",
* list_length(observers_list),
* COAP_MAX_OBSERVERS));
*/
} else {
coap_res->code = SERVICE_UNAVAILABLE_5_03;
coap_set_payload(coap_res, "TooManyObservers", 16);
}
} else if(coap_req->observe == 1) {
/* remove client if it is currently observe */
coap_remove_observer_by_token(&UIP_IP_BUF->srcipaddr,
UIP_UDP_BUF->srcport, coap_req->token,
coap_req->token_len);
}
}
}
}
/*---------------------------------------------------------------------------*/

57
apps/er-coap-13/er-coap-13-observing.h → apps/er-coap/er-coap-observe.h
View File

@ -31,31 +31,28 @@
/** /**
* \file * \file
* CoAP module for observing resources * CoAP module for observing resources (draft-ietf-core-observe-11).
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_OBSERVING_H_ #ifndef COAP_OBSERVE_H_
#define COAP_OBSERVING_H_ #define COAP_OBSERVE_H_
#include "sys/stimer.h" #include "er-coap.h"
#include "er-coap-13.h" #include "er-coap-transactions.h"
#include "er-coap-13-transactions.h" #include "stimer.h"
#ifndef COAP_MAX_OBSERVERS typedef struct coap_observable {
#define COAP_MAX_OBSERVERS COAP_MAX_OPEN_TRANSACTIONS-1 uint32_t observe_clock;
#endif /* COAP_MAX_OBSERVERS */ struct stimer orphan_timer;
list_t observers;
/* Interval in seconds in which NON notifies are changed to CON notifies to check client. */ coap_packet_t notification;
#define COAP_OBSERVING_REFRESH_INTERVAL 60 uint8_t buffer[COAP_MAX_PACKET_SIZE + 1];
} coap_observable_t;
#if COAP_MAX_OPEN_TRANSACTIONS<COAP_MAX_OBSERVERS
#warning "COAP_MAX_OPEN_TRANSACTIONS smaller than COAP_MAX_OBSERVERS: cannot handle CON notifications"
#endif
typedef struct coap_observer { typedef struct coap_observer {
struct coap_observer *next; /* for LIST */ struct coap_observer *next; /* for LIST */
const char *url; const char *url;
uip_ipaddr_t addr; uip_ipaddr_t addr;
@ -63,21 +60,31 @@ typedef struct coap_observer {
uint8_t token_len; uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN]; uint8_t token[COAP_TOKEN_LEN];
uint16_t last_mid; uint16_t last_mid;
struct stimer refresh_timer;
int32_t obs_counter;
struct etimer retrans_timer;
uint8_t retrans_counter;
} coap_observer_t; } coap_observer_t;
list_t coap_get_observers(void); list_t coap_get_observers(void);
coap_observer_t *coap_add_observer(uip_ipaddr_t *addr, uint16_t port, const uint8_t *token, size_t token_len, const char *url); coap_observer_t *coap_add_observer(uip_ipaddr_t *addr, uint16_t port,
const uint8_t *token, size_t token_len,
const char *url);
void coap_remove_observer(coap_observer_t *o); void coap_remove_observer(coap_observer_t *o);
int coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port); int coap_remove_observer_by_client(uip_ipaddr_t *addr, uint16_t port);
int coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port, uint8_t *token, size_t token_len); int coap_remove_observer_by_token(uip_ipaddr_t *addr, uint16_t port,
int coap_remove_observer_by_url(uip_ipaddr_t *addr, uint16_t port, const char *url); uint8_t *token, size_t token_len);
int coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port, uint16_t mid); int coap_remove_observer_by_uri(uip_ipaddr_t *addr, uint16_t port,
const char *uri);
int coap_remove_observer_by_mid(uip_ipaddr_t *addr, uint16_t port,
uint16_t mid);
void coap_notify_observers(resource_t *resource, int32_t obs_counter, void *notification); void coap_notify_observers(resource_t *resource);
void coap_observe_handler(resource_t *resource, void *request, void *response); void coap_observe_handler(resource_t *resource, void *request,
void *response);
#endif /* COAP_OBSERVING_H_ */ #endif /* COAP_OBSERVE_H_ */

208
apps/er-coap/er-coap-res-well-known-core.c Normal file
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@ -0,0 +1,208 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* /.well-known/core resource implementation.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "er-coap-engine.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
#define ADD_CHAR_IF_POSSIBLE(char) \
if(strpos >= *offset && bufpos < preferred_size) { \
buffer[bufpos++] = char; \
} \
++strpos
#define ADD_STRING_IF_POSSIBLE(string, op) \
tmplen = strlen(string); \
if(strpos + tmplen > *offset) { \
bufpos += snprintf((char *)buffer + bufpos, \
preferred_size - bufpos + 1, \
"%s", \
string \
+ (*offset - (int32_t)strpos > 0 ? \
*offset - (int32_t)strpos : 0)); \
if(bufpos op preferred_size) { \
PRINTF("res: BREAK at %s (%p)\n", string, resource); \
break; \
} \
} \
strpos += tmplen
/*---------------------------------------------------------------------------*/
/*- Resource Handlers -------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void
well_known_core_get_handler(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset)
{
size_t strpos = 0; /* position in overall string (which is larger than the buffer) */
size_t bufpos = 0; /* position within buffer (bytes written) */
size_t tmplen = 0;
resource_t *resource = NULL;
#if COAP_LINK_FORMAT_FILTERING
/* For filtering. */
const char *filter = NULL;
const char *attrib = NULL;
const char *found = NULL;
const char *end = NULL;
char *value = NULL;
char lastchar = '\0';
int len = coap_get_header_uri_query(request, &filter);
if(len) {
value = strchr(filter, '=');
value[0] = '\0';
++value;
len -= strlen(filter) + 1;
PRINTF("Filter %s = %.*s\n", filter, len, value);
if(strcmp(filter, "href") == 0 && value[0] == '/') {
++value;
--len;
}
lastchar = value[len - 1];
value[len - 1] = '\0';
}
#endif
for(resource = (resource_t *)list_head(rest_get_resources()); resource;
resource = resource->next) {
#if COAP_LINK_FORMAT_FILTERING
/* Filtering */
if(len) {
if(strcmp(filter, "href") == 0) {
attrib = strstr(resource->url, value);
if(attrib == NULL || (value[-1] == '/' && attrib != resource->url)) {
continue;
}
end = attrib + strlen(attrib);
} else {
attrib = strstr(resource->attributes, filter);
if(attrib == NULL
|| (attrib[strlen(filter)] != '='
&& attrib[strlen(filter)] != '"')) {
continue;
}
attrib += strlen(filter) + 2;
end = strchr(attrib, '"');
}
PRINTF("Filter: res has attrib %s (%s)\n", attrib, value);
found = attrib;
while((found = strstr(found, value)) != NULL) {
if(found > end) {
found = NULL;
break;
}
if(lastchar == found[len - 1] || lastchar == '*') {
break;
}
++found;
}
if(found == NULL) {
continue;
}
PRINTF("Filter: res has prefix %s\n", found);
if(lastchar != '*'
&& (found[len] != '"' && found[len] != ' ' && found[len] != '\0')) {
continue;
}
PRINTF("Filter: res has match\n");
}
#endif
PRINTF("res: /%s (%p)\npos: s%d, o%ld, b%d\n", resource->url, resource,
strpos, *offset, bufpos);
if(strpos > 0) {
ADD_CHAR_IF_POSSIBLE(',');
}
ADD_CHAR_IF_POSSIBLE('<');
ADD_CHAR_IF_POSSIBLE('/');
ADD_STRING_IF_POSSIBLE(resource->url, >=);
ADD_CHAR_IF_POSSIBLE('>');
if(resource->attributes[0]) {
ADD_CHAR_IF_POSSIBLE(';');
ADD_STRING_IF_POSSIBLE(resource->attributes, >);
}
/* buffer full, but resource not completed yet; or: do not break if resource exactly fills buffer. */
if(bufpos > preferred_size && strpos - bufpos > *offset) {
PRINTF("res: BREAK at %s (%p)\n", resource->url, resource);
break;
}
}
if(bufpos > 0) {
PRINTF("BUF %d: %.*s\n", bufpos, bufpos, (char *)buffer);
coap_set_payload(response, buffer, bufpos);
coap_set_header_content_format(response, APPLICATION_LINK_FORMAT);
} else if(strpos > 0) {
PRINTF("well_known_core_handler(): bufpos<=0\n");
coap_set_status_code(response, BAD_OPTION_4_02);
coap_set_payload(response, "BlockOutOfScope", 15);
}
if(resource == NULL) {
PRINTF("res: DONE\n");
*offset = -1;
} else {
PRINTF("res: MORE at %s (%p)\n", resource->url, resource);
*offset += preferred_size;
}
}
/*---------------------------------------------------------------------------*/
RESOURCE(res_well_known_core, "ct=40", well_known_core_get_handler, NULL,
NULL, NULL);
/*---------------------------------------------------------------------------*/

99
apps/er-coap-13/er-coap-13-separate.c → apps/er-coap/er-coap-separate.c
View File

@ -31,87 +31,118 @@
/** /**
* \file * \file
* CoAP module for separate responses * CoAP module for separate responses.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include "er-coap-separate.h"
#include "er-coap-13-separate.h" #include "er-coap-transactions.h"
#include "er-coap-13-transactions.h"
#define DEBUG 0 #define DEBUG 0
#if DEBUG #if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__) #define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15]) #define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5]) #define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else #else
#define PRINTF(...) #define PRINTF(...)
#define PRINT6ADDR(addr) #define PRINT6ADDR(addr)
#define PRINTLLADDR(addr) #define PRINTLLADDR(addr)
#endif #endif
/*----------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/*- Separate Response API ---------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/**
* \brief Reject a request that would require a separate response with an error message
*
* When the server does not have enough resources left to store the information
* for a separate response or otherwise cannot execute the resource handler,
* this function will respond with 5.03 Service Unavailable. The client can
* then retry later.
*/
void void
coap_separate_reject() coap_separate_reject()
{ {
coap_error_code = SERVICE_UNAVAILABLE_5_03; /* TODO: Accept string pointer for custom error message */
erbium_status_code = SERVICE_UNAVAILABLE_5_03;
coap_error_message = "AlreadyInUse"; coap_error_message = "AlreadyInUse";
} }
/*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/
int /**
* \brief Initiate a separate response with an empty ACK
* \param request The request to accept
* \param separate_store A pointer to the data structure that will store the
* relevant information for the response
*
* When the server does not have enough resources left to store the information
* for a separate response or otherwise cannot execute the resource handler,
* this function will respond with 5.03 Service Unavailable. The client can
* then retry later.
*/
void
coap_separate_accept(void *request, coap_separate_t *separate_store) coap_separate_accept(void *request, coap_separate_t *separate_store)
{ {
coap_packet_t *const coap_req = (coap_packet_t *) request; coap_packet_t *const coap_req = (coap_packet_t *)request;
coap_transaction_t *const t = coap_get_transaction_by_mid(coap_req->mid); coap_transaction_t *const t = coap_get_transaction_by_mid(coap_req->mid);
PRINTF("Separate ACCEPT: /%.*s MID %u\n", coap_req->uri_path_len, coap_req->uri_path, coap_req->mid); PRINTF("Separate ACCEPT: /%.*s MID %u\n", coap_req->uri_path_len,
if (t) coap_req->uri_path, coap_req->mid);
{ if(t) {
/* Send separate ACK for CON. */ /* send separate ACK for CON */
if (coap_req->type==COAP_TYPE_CON) if(coap_req->type == COAP_TYPE_CON) {
{
coap_packet_t ack[1]; coap_packet_t ack[1];
/* ACK with empty code (0) */ /* ACK with empty code (0) */
coap_init_message(ack, COAP_TYPE_ACK, 0, coap_req->mid); coap_init_message(ack, COAP_TYPE_ACK, 0, coap_req->mid);
/* Serializing into IPBUF: Only overwrites header parts that are already parsed into the request struct. */ /* serializing into IPBUF: Only overwrites header parts that are already parsed into the request struct */
coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport, (uip_appdata), coap_serialize_message(ack, uip_appdata)); coap_send_message(&UIP_IP_BUF->srcipaddr, UIP_UDP_BUF->srcport,
(uip_appdata), coap_serialize_message(ack,
uip_appdata));
} }
/* Store remote address. */ /* store remote address */
uip_ipaddr_copy(&separate_store->addr, &t->addr); uip_ipaddr_copy(&separate_store->addr, &t->addr);
separate_store->port = t->port; separate_store->port = t->port;
/* Store correct response type. */ /* store correct response type */
separate_store->type = coap_req->type==COAP_TYPE_CON ? COAP_TYPE_CON : COAP_TYPE_NON; separate_store->type =
coap_req->type == COAP_TYPE_CON ? COAP_TYPE_CON : COAP_TYPE_NON;
separate_store->mid = coap_get_mid(); /* if it was a NON, we burned one MID in the engine... */ separate_store->mid = coap_get_mid(); /* if it was a NON, we burned one MID in the engine... */
memcpy(separate_store->token, coap_req->token, coap_req->token_len); memcpy(separate_store->token, coap_req->token, coap_req->token_len);
separate_store->token_len = coap_req->token_len; separate_store->token_len = coap_req->token_len;
separate_store->block1_num = coap_req->block1_num;
separate_store->block1_size = coap_req->block1_size;
separate_store->block2_num = coap_req->block2_num; separate_store->block2_num = coap_req->block2_num;
separate_store->block2_size = coap_req->block2_size; separate_store->block2_size = coap_req->block2_size > 0 ? MIN(COAP_MAX_BLOCK_SIZE, coap_req->block2_size) : COAP_MAX_BLOCK_SIZE;
/* Signal the engine to skip automatic response and clear transaction by engine. */ /* signal the engine to skip automatic response and clear transaction by engine */
coap_error_code = MANUAL_RESPONSE; erbium_status_code = MANUAL_RESPONSE;
} else {
return 1;
}
else
{
PRINTF("ERROR: Response transaction for separate request not found!\n"); PRINTF("ERROR: Response transaction for separate request not found!\n");
return 0; erbium_status_code = INTERNAL_SERVER_ERROR_5_00;
} }
} }
/*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/
void void
coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code) coap_separate_resume(void *response, coap_separate_t *separate_store,
uint8_t code)
{ {
coap_init_message(response, separate_store->type, code, separate_store->mid); coap_init_message(response, separate_store->type, code,
if (separate_store->token_len) separate_store->mid);
{ if(separate_store->token_len) {
coap_set_header_token(response, separate_store->token, separate_store->token_len); coap_set_token(response, separate_store->token,
separate_store->token_len);
}
if(separate_store->block1_size) {
coap_set_header_block1(response, separate_store->block1_num,
0, separate_store->block1_size);
} }
} }
/*---------------------------------------------------------------------------*/

17
apps/er-coap-13/er-coap-13-separate.h → apps/er-coap/er-coap-separate.h
View File

@ -31,7 +31,7 @@
/** /**
* \file * \file
* CoAP module for separate responses * CoAP module for separate responses.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
@ -39,7 +39,7 @@
#ifndef COAP_SEPARATE_H_ #ifndef COAP_SEPARATE_H_
#define COAP_SEPARATE_H_ #define COAP_SEPARATE_H_
#include "er-coap-13.h" #include "er-coap.h"
typedef struct coap_separate { typedef struct coap_separate {
@ -52,15 +52,18 @@ typedef struct coap_separate {
uint8_t token_len; uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN]; uint8_t token[COAP_TOKEN_LEN];
/* separate + blockwise is untested! */ uint32_t block1_num;
uint16_t block1_size;
uint32_t block2_num; uint32_t block2_num;
uint16_t block2_size; uint16_t block2_size;
} coap_separate_t; } coap_separate_t;
int coap_separate_handler(resource_t *resource, void *request, void *response); int coap_separate_handler(resource_t *resource, void *request,
void *response);
void coap_separate_reject(); void coap_separate_reject();
int coap_separate_accept(void *request, coap_separate_t *separate_store); void coap_separate_accept(void *request, coap_separate_t *separate_store);
void coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code); void coap_separate_resume(void *response, coap_separate_t *separate_store,
uint8_t code);
#endif /* COAP_SEPARATE_H_ */ #endif /* COAP_SEPARATE_H_ */

94
apps/er-coap-13/er-coap-13-transactions.c → apps/er-coap/er-coap-transactions.c
View File

@ -38,49 +38,41 @@
#include "contiki.h" #include "contiki.h"
#include "contiki-net.h" #include "contiki-net.h"
#include "er-coap-transactions.h"
#include "er-coap-13-transactions.h" #include "er-coap-observe.h"
#include "er-coap-13-observing.h"
/*
* Modulo mask (+1 and +0.5 for rounding) for a random number to get the tick number for the random
* retransmission time between COAP_RESPONSE_TIMEOUT and COAP_RESPONSE_TIMEOUT*COAP_RESPONSE_RANDOM_FACTOR.
*/
#define COAP_RESPONSE_TIMEOUT_TICKS (CLOCK_SECOND * COAP_RESPONSE_TIMEOUT)
#define COAP_RESPONSE_TIMEOUT_BACKOFF_MASK ((CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * (COAP_RESPONSE_RANDOM_FACTOR - 1)) + 1.5)
#define DEBUG 0 #define DEBUG 0
#if DEBUG #if DEBUG
#include <stdio.h> #include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__) #define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15]) #define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5]) #define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else #else
#define PRINTF(...) #define PRINTF(...)
#define PRINT6ADDR(addr) #define PRINT6ADDR(addr)
#define PRINTLLADDR(addr) #define PRINTLLADDR(addr)
#endif #endif
/*---------------------------------------------------------------------------*/
MEMB(transactions_memb, coap_transaction_t, COAP_MAX_OPEN_TRANSACTIONS); MEMB(transactions_memb, coap_transaction_t, COAP_MAX_OPEN_TRANSACTIONS);
LIST(transactions_list); LIST(transactions_list);
static struct process *transaction_handler_process = NULL; static struct process *transaction_handler_process = NULL;
/*---------------------------------------------------------------------------*/
/*- Internal API ------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
void void
coap_register_as_transaction_handler() coap_register_as_transaction_handler()
{ {
transaction_handler_process = PROCESS_CURRENT(); transaction_handler_process = PROCESS_CURRENT();
} }
coap_transaction_t * coap_transaction_t *
coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port) coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port)
{ {
coap_transaction_t *t = memb_alloc(&transactions_memb); coap_transaction_t *t = memb_alloc(&transactions_memb);
if (t) if(t) {
{
t->mid = mid; t->mid = mid;
t->retrans_counter = 0; t->retrans_counter = 0;
@ -88,12 +80,12 @@ coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port)
uip_ipaddr_copy(&t->addr, addr); uip_ipaddr_copy(&t->addr, addr);
t->port = port; t->port = port;
list_add(transactions_list, t); /* List itself makes sure same element is not added twice. */ list_add(transactions_list, t); /* list itself makes sure same element is not added twice */
} }
return t; return t;
} }
/*---------------------------------------------------------------------------*/
void void
coap_send_transaction(coap_transaction_t *t) coap_send_transaction(coap_transaction_t *t)
{ {
@ -101,22 +93,24 @@ coap_send_transaction(coap_transaction_t *t)
coap_send_message(&t->addr, t->port, t->packet, t->packet_len); coap_send_message(&t->addr, t->port, t->packet, t->packet_len);
if (COAP_TYPE_CON==((COAP_HEADER_TYPE_MASK & t->packet[0])>>COAP_HEADER_TYPE_POSITION)) if(COAP_TYPE_CON ==
{ ((COAP_HEADER_TYPE_MASK & t->packet[0]) >> COAP_HEADER_TYPE_POSITION)) {
if (t->retrans_counter<COAP_MAX_RETRANSMIT) if(t->retrans_counter < COAP_MAX_RETRANSMIT) {
{ /* not timed out yet */
/* Not timed out yet. */
PRINTF("Keeping transaction %u\n", t->mid); PRINTF("Keeping transaction %u\n", t->mid);
if (t->retrans_counter==0) if(t->retrans_counter == 0) {
{ t->retrans_timer.timer.interval =
t->retrans_timer.timer.interval = COAP_RESPONSE_TIMEOUT_TICKS + (random_rand() % (clock_time_t) COAP_RESPONSE_TIMEOUT_BACKOFF_MASK); COAP_RESPONSE_TIMEOUT_TICKS + (random_rand()
PRINTF("Initial interval %f\n", (float)t->retrans_timer.timer.interval/CLOCK_SECOND); %
} (clock_time_t)
else COAP_RESPONSE_TIMEOUT_BACKOFF_MASK);
{ PRINTF("Initial interval %f\n",
t->retrans_timer.timer.interval <<= 1; /* double */ (float)t->retrans_timer.timer.interval / CLOCK_SECOND);
PRINTF("Doubled (%u) interval %f\n", t->retrans_counter, (float)t->retrans_timer.timer.interval/CLOCK_SECOND); } else {
t->retrans_timer.timer.interval <<= 1; /* double */
PRINTF("Doubled (%u) interval %f\n", t->retrans_counter,
(float)t->retrans_timer.timer.interval / CLOCK_SECOND);
} }
/*FIXME /*FIXME
@ -124,15 +118,14 @@ coap_send_transaction(coap_transaction_t *t)
* Maybe there is a better way, but avoid posting everything to the process. * Maybe there is a better way, but avoid posting everything to the process.
*/ */
struct process *process_actual = PROCESS_CURRENT(); struct process *process_actual = PROCESS_CURRENT();
process_current = transaction_handler_process; process_current = transaction_handler_process;
etimer_restart(&t->retrans_timer); /* interval updated above */ etimer_restart(&t->retrans_timer); /* interval updated above */
process_current = process_actual; process_current = process_actual;
t = NULL; t = NULL;
} } else {
else /* timed out */
{
/* Timed out. */
PRINTF("Timeout\n"); PRINTF("Timeout\n");
restful_response_handler callback = t->callback; restful_response_handler callback = t->callback;
void *callback_data = t->callback_data; void *callback_data = t->callback_data;
@ -142,22 +135,19 @@ coap_send_transaction(coap_transaction_t *t)
coap_clear_transaction(t); coap_clear_transaction(t);
if (callback) { if(callback) {
callback(callback_data, NULL); callback(callback_data, NULL);
} }
} }
} } else {
else
{
coap_clear_transaction(t); coap_clear_transaction(t);
} }
} }
/*---------------------------------------------------------------------------*/
void void
coap_clear_transaction(coap_transaction_t *t) coap_clear_transaction(coap_transaction_t *t)
{ {
if (t) if(t) {
{
PRINTF("Freeing transaction %u: %p\n", t->mid, t); PRINTF("Freeing transaction %u: %p\n", t->mid, t);
etimer_stop(&t->retrans_timer); etimer_stop(&t->retrans_timer);
@ -165,35 +155,31 @@ coap_clear_transaction(coap_transaction_t *t)
memb_free(&transactions_memb, t); memb_free(&transactions_memb, t);
} }
} }
coap_transaction_t * coap_transaction_t *
coap_get_transaction_by_mid(uint16_t mid) coap_get_transaction_by_mid(uint16_t mid)
{ {
coap_transaction_t *t = NULL; coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next) for(t = (coap_transaction_t *)list_head(transactions_list); t; t = t->next) {
{ if(t->mid == mid) {
if (t->mid==mid)
{
PRINTF("Found transaction for MID %u: %p\n", t->mid, t); PRINTF("Found transaction for MID %u: %p\n", t->mid, t);
return t; return t;
} }
} }
return NULL; return NULL;
} }
/*---------------------------------------------------------------------------*/
void void
coap_check_transactions() coap_check_transactions()
{ {
coap_transaction_t *t = NULL; coap_transaction_t *t = NULL;
for (t = (coap_transaction_t*)list_head(transactions_list); t; t = t->next) for(t = (coap_transaction_t *)list_head(transactions_list); t; t = t->next) {
{ if(etimer_expired(&t->retrans_timer)) {
if (etimer_expired(&t->retrans_timer))
{
++(t->retrans_counter); ++(t->retrans_counter);
PRINTF("Retransmitting %u (%u)\n", t->mid, t->retrans_counter); PRINTF("Retransmitting %u (%u)\n", t->mid, t->retrans_counter);
coap_send_transaction(t); coap_send_transaction(t);
} }
} }
} }
/*---------------------------------------------------------------------------*/

18
apps/er-coap-13/er-coap-13-transactions.h → apps/er-coap/er-coap-transactions.h
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@ -39,18 +39,18 @@
#ifndef COAP_TRANSACTIONS_H_ #ifndef COAP_TRANSACTIONS_H_
#define COAP_TRANSACTIONS_H_ #define COAP_TRANSACTIONS_H_
#include "er-coap-13.h" #include "er-coap.h"
/* /*
* The number of concurrent messages that can be stored for retransmission in the transaction layer. * Modulo mask (thus +1) for a random number to get the tick number for the random
* retransmission time between COAP_RESPONSE_TIMEOUT and COAP_RESPONSE_TIMEOUT*COAP_RESPONSE_RANDOM_FACTOR.
*/ */
#ifndef COAP_MAX_OPEN_TRANSACTIONS #define COAP_RESPONSE_TIMEOUT_TICKS (CLOCK_SECOND * COAP_RESPONSE_TIMEOUT)
#define COAP_MAX_OPEN_TRANSACTIONS 4 #define COAP_RESPONSE_TIMEOUT_BACKOFF_MASK (long)((CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * ((float)COAP_RESPONSE_RANDOM_FACTOR - 1.0)) + 0.5) + 1
#endif /* COAP_MAX_OPEN_TRANSACTIONS */
/* container for transactions with message buffer and retransmission info */ /* container for transactions with message buffer and retransmission info */
typedef struct coap_transaction { typedef struct coap_transaction {
struct coap_transaction *next; /* for LIST */ struct coap_transaction *next; /* for LIST */
uint16_t mid; uint16_t mid;
struct etimer retrans_timer; struct etimer retrans_timer;
@ -63,12 +63,14 @@ typedef struct coap_transaction {
void *callback_data; void *callback_data;
uint16_t packet_len; uint16_t packet_len;
uint8_t packet[COAP_MAX_PACKET_SIZE+1]; /* +1 for the terminating '\0' to simply and savely use snprintf(buf, len+1, "", ...) in the resource handler. */ uint8_t packet[COAP_MAX_PACKET_SIZE + 1]; /* +1 for the terminating '\0' which will not be sent
* Use snprintf(buf, len+1, "", ...) to completely fill payload */
} coap_transaction_t; } coap_transaction_t;
void coap_register_as_transaction_handler(); void coap_register_as_transaction_handler();
coap_transaction_t *coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr, uint16_t port); coap_transaction_t *coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr,
uint16_t port);
void coap_send_transaction(coap_transaction_t *t); void coap_send_transaction(coap_transaction_t *t);
void coap_clear_transaction(coap_transaction_t *t); void coap_clear_transaction(coap_transaction_t *t);
coap_transaction_t *coap_get_transaction_by_mid(uint16_t mid); coap_transaction_t *coap_get_transaction_by_mid(uint16_t mid);

1193
apps/er-coap/er-coap.c Normal file
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File diff suppressed because it is too large Load Diff

267
apps/er-coap/er-coap.h Normal file
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@ -0,0 +1,267 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An implementation of the Constrained Application Protocol (RFC).
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef ER_COAP_H_
#define ER_COAP_H_
#include <stddef.h> /* for size_t */
#include "contiki-net.h"
#include "er-coap-constants.h"
#include "er-coap-conf.h"
/* sanity check for configured values */
#define COAP_MAX_PACKET_SIZE (COAP_MAX_HEADER_SIZE + REST_MAX_CHUNK_SIZE)
#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_IPH_LEN - UIP_UDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for REST_MAX_CHUNK_SIZE"
#endif
/* use Erbium CoAP for the REST Engine. Must come before include of rest-engine.h. */
#define REST coap_rest_implementation
#include "rest-engine.h"
/* REST_MAX_CHUNK_SIZE can be different from 2^x so we need to get next lower 2^x for COAP_MAX_BLOCK_SIZE */
#ifndef COAP_MAX_BLOCK_SIZE
#define COAP_MAX_BLOCK_SIZE (REST_MAX_CHUNK_SIZE < 32 ? 16 : \
(REST_MAX_CHUNK_SIZE < 64 ? 32 : \
(REST_MAX_CHUNK_SIZE < 128 ? 64 : \
(REST_MAX_CHUNK_SIZE < 256 ? 128 : \
(REST_MAX_CHUNK_SIZE < 512 ? 256 : \
(REST_MAX_CHUNK_SIZE < 1024 ? 512 : \
(REST_MAX_CHUNK_SIZE < 2048 ? 1024 : 2048)))))))
#endif /* COAP_MAX_BLOCK_SIZE */
/* direct access into the buffer */
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#if UIP_CONF_IPV6
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#else
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#endif
/* bitmap for set options */
enum { OPTION_MAP_SIZE = sizeof(uint8_t) * 8 };
#define SET_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] |= 1 << (opt % OPTION_MAP_SIZE))
#define IS_OPTION(packet, opt) ((packet)->options[opt / OPTION_MAP_SIZE] & (1 << (opt % OPTION_MAP_SIZE)))
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif /* MIN */
/* parsed message struct */
typedef struct {
uint8_t *buffer; /* pointer to CoAP header / incoming packet buffer / memory to serialize packet */
uint8_t version;
coap_message_type_t type;
uint8_t code;
uint16_t mid;
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
uint8_t options[COAP_OPTION_SIZE1 / OPTION_MAP_SIZE + 1]; /* bitmap to check if option is set */
coap_content_format_t content_format; /* parse options once and store; allows setting options in random order */
uint32_t max_age;
uint8_t etag_len;
uint8_t etag[COAP_ETAG_LEN];
size_t proxy_uri_len;
const char *proxy_uri;
size_t proxy_scheme_len;
const char *proxy_scheme;
size_t uri_host_len;
const char *uri_host;
size_t location_path_len;
const char *location_path;
uint16_t uri_port;
size_t location_query_len;
const char *location_query;
size_t uri_path_len;
const char *uri_path;
int32_t observe;
coap_content_format_t accept;
uint8_t if_match_len;
uint8_t if_match[COAP_ETAG_LEN];
uint32_t block2_num;
uint8_t block2_more;
uint16_t block2_size;
uint32_t block2_offset;
uint32_t block1_num;
uint8_t block1_more;
uint16_t block1_size;
uint32_t block1_offset;
uint32_t size2;
uint32_t size1;
size_t uri_query_len;
const char *uri_query;
uint8_t if_none_match;
uint16_t payload_len;
uint8_t *payload;
} coap_packet_t;
/* option format serialization */
#define COAP_SERIALIZE_INT_OPTION(number, field, text) \
if(IS_OPTION(coap_pkt, number)) { \
PRINTF(text " [%u]\n", coap_pkt->field); \
option += coap_serialize_int_option(number, current_number, option, coap_pkt->field); \
current_number = number; \
}
#define COAP_SERIALIZE_BYTE_OPTION(number, field, text) \
if(IS_OPTION(coap_pkt, number)) { \
PRINTF(text " %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->field##_len, \
coap_pkt->field[0], \
coap_pkt->field[1], \
coap_pkt->field[2], \
coap_pkt->field[3], \
coap_pkt->field[4], \
coap_pkt->field[5], \
coap_pkt->field[6], \
coap_pkt->field[7] \
); /* FIXME always prints 8 bytes */ \
option += coap_serialize_array_option(number, current_number, option, coap_pkt->field, coap_pkt->field##_len, '\0'); \
current_number = number; \
}
#define COAP_SERIALIZE_STRING_OPTION(number, field, splitter, text) \
if(IS_OPTION(coap_pkt, number)) { \
PRINTF(text " [%.*s]\n", coap_pkt->field##_len, coap_pkt->field); \
option += coap_serialize_array_option(number, current_number, option, (uint8_t *)coap_pkt->field, coap_pkt->field##_len, splitter); \
current_number = number; \
}
#define COAP_SERIALIZE_BLOCK_OPTION(number, field, text) \
if(IS_OPTION(coap_pkt, number)) \
{ \
PRINTF(text " [%lu%s (%u B/blk)]\n", coap_pkt->field##_num, coap_pkt->field##_more ? "+" : "", coap_pkt->field##_size); \
uint32_t block = coap_pkt->field##_num << 4; \
if(coap_pkt->field##_more) { block |= 0x8; } \
block |= 0xF & coap_log_2(coap_pkt->field##_size / 16); \
PRINTF(text " encoded: 0x%lX\n", block); \
option += coap_serialize_int_option(number, current_number, option, block); \
current_number = number; \
}
/* to store error code and human-readable payload */
extern coap_status_t erbium_status_code;
extern char *coap_error_message;
void coap_init_connection(uint16_t port);
uint16_t coap_get_mid(void);
void coap_init_message(void *packet, coap_message_type_t type, uint8_t code,
uint16_t mid);
size_t coap_serialize_message(void *packet, uint8_t *buffer);
void coap_send_message(uip_ipaddr_t *addr, uint16_t port, uint8_t *data,
uint16_t length);
coap_status_t coap_parse_message(void *request, uint8_t *data,
uint16_t data_len);
int coap_get_query_variable(void *packet, const char *name,
const char **output);
int coap_get_post_variable(void *packet, const char *name,
const char **output);
/*---------------------------------------------------------------------------*/
int coap_set_status_code(void *packet, unsigned int code);
int coap_set_token(void *packet, const uint8_t *token, size_t token_len);
int coap_get_header_content_format(void *packet, unsigned int *format);
int coap_set_header_content_format(void *packet, unsigned int format);
int coap_get_header_accept(void *packet, unsigned int *accept);
int coap_set_header_accept(void *packet, unsigned int accept);
int coap_get_header_max_age(void *packet, uint32_t *age);
int coap_set_header_max_age(void *packet, uint32_t age);
int coap_get_header_etag(void *packet, const uint8_t **etag);
int coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len);
int coap_get_header_if_match(void *packet, const uint8_t **etag);
int coap_set_header_if_match(void *packet, const uint8_t *etag,
size_t etag_len);
int coap_get_header_if_none_match(void *packet);
int coap_set_header_if_none_match(void *packet);
int coap_get_header_proxy_uri(void *packet, const char **uri); /* in-place string might not be 0-terminated. */
int coap_set_header_proxy_uri(void *packet, const char *uri);
int coap_get_header_proxy_scheme(void *packet, const char **scheme); /* in-place string might not be 0-terminated. */
int coap_set_header_proxy_scheme(void *packet, const char *scheme);
int coap_get_header_uri_host(void *packet, const char **host); /* in-place string might not be 0-terminated. */
int coap_set_header_uri_host(void *packet, const char *host);
int coap_get_header_uri_path(void *packet, const char **path); /* in-place string might not be 0-terminated. */
int coap_set_header_uri_path(void *packet, const char *path);
int coap_get_header_uri_query(void *packet, const char **query); /* in-place string might not be 0-terminated. */
int coap_set_header_uri_query(void *packet, const char *query);
int coap_get_header_location_path(void *packet, const char **path); /* in-place string might not be 0-terminated. */
int coap_set_header_location_path(void *packet, const char *path); /* also splits optional query into Location-Query option. */
int coap_get_header_location_query(void *packet, const char **query); /* in-place string might not be 0-terminated. */
int coap_set_header_location_query(void *packet, const char *query);
int coap_get_header_observe(void *packet, uint32_t *observe);
int coap_set_header_observe(void *packet, uint32_t observe);
int coap_get_header_block2(void *packet, uint32_t *num, uint8_t *more,
uint16_t *size, uint32_t *offset);
int coap_set_header_block2(void *packet, uint32_t num, uint8_t more,
uint16_t size);
int coap_get_header_block1(void *packet, uint32_t *num, uint8_t *more,
uint16_t *size, uint32_t *offset);
int coap_set_header_block1(void *packet, uint32_t num, uint8_t more,
uint16_t size);
int coap_get_header_size2(void *packet, uint32_t *size);
int coap_set_header_size2(void *packet, uint32_t size);
int coap_get_header_size1(void *packet, uint32_t *size);
int coap_set_header_size1(void *packet, uint32_t size);
int coap_get_payload(void *packet, const uint8_t **payload);
int coap_set_payload(void *packet, const void *payload, size_t length);
#endif /* ER_COAP_H_ */

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erbium_src = erbium.c

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apps/erbium/erbium.c
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An abstraction layer for RESTful Web services
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#include <string.h> /*for string operations in match_addresses*/
#include <stdio.h> /*for sprintf in rest_set_header_**/
#include "erbium.h"
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
PROCESS_NAME(rest_manager_process);
LIST(restful_services);
LIST(restful_periodic_services);
void
rest_init_engine(void)
{
list_init(restful_services);
REST.set_service_callback(rest_invoke_restful_service);
/* Start the RESTful server implementation. */
REST.init();
/*Start rest manager process*/
process_start(&rest_manager_process, NULL);
}
void
rest_activate_resource(resource_t* resource)
{
PRINTF("Activating: %s", resource->url);
if (!resource->pre_handler)
{
rest_set_pre_handler(resource, REST.default_pre_handler);
}
if (!resource->post_handler)
{
rest_set_post_handler(resource, REST.default_post_handler);
}
list_add(restful_services, resource);
}
void
rest_activate_periodic_resource(periodic_resource_t* periodic_resource)
{
list_add(restful_periodic_services, periodic_resource);
rest_activate_resource(periodic_resource->resource);
rest_set_post_handler(periodic_resource->resource, REST.subscription_handler);
}
void
rest_activate_event_resource(resource_t* resource)
{
rest_activate_resource(resource);
rest_set_post_handler(resource, REST.subscription_handler);
}
list_t
rest_get_resources(void)
{
return restful_services;
}
void*
rest_get_user_data(resource_t* resource)
{
return resource->user_data;
}
void
rest_set_user_data(resource_t* resource, void* user_data)
{
resource->user_data = user_data;
}
void
rest_set_pre_handler(resource_t* resource, restful_pre_handler pre_handler)
{
resource->pre_handler = pre_handler;
}
void
rest_set_post_handler(resource_t* resource, restful_post_handler post_handler)
{
resource->post_handler = post_handler;
}
void
rest_set_special_flags(resource_t* resource, rest_resource_flags_t flags)
{
resource->flags |= flags;
}
int
rest_invoke_restful_service(void* request, void* response, uint8_t *buffer, uint16_t buffer_size, int32_t *offset)
{
uint8_t found = 0;
uint8_t allowed = 0;
PRINTF("rest_invoke_restful_service url /%.*s -->\n", url_len, url);
resource_t* resource = NULL;
const char *url = NULL;
for (resource = (resource_t*)list_head(restful_services); resource; resource = resource->next)
{
/*if the web service handles that kind of requests and urls matches*/
if ((REST.get_url(request, &url)==strlen(resource->url) || (REST.get_url(request, &url)>strlen(resource->url) && (resource->flags & HAS_SUB_RESOURCES)))
&& strncmp(resource->url, url, strlen(resource->url)) == 0)
{
found = 1;
rest_resource_flags_t method = REST.get_method_type(request);
PRINTF("method %u, resource->flags %u\n", (uint16_t)method, resource->flags);
if (resource->flags & method)
{
allowed = 1;
/*call pre handler if it exists*/
if (!resource->pre_handler || resource->pre_handler(resource, request, response))
{
/* call handler function*/
resource->handler(request, response, buffer, buffer_size, offset);
/*call post handler if it exists*/
if (resource->post_handler)
{
resource->post_handler(resource, request, response);
}
}
} else {
REST.set_response_status(response, REST.status.METHOD_NOT_ALLOWED);
}
break;
}
}
if (!found) {
REST.set_response_status(response, REST.status.NOT_FOUND);
}
return found & allowed;
}
/*-----------------------------------------------------------------------------------*/
PROCESS(rest_manager_process, "Rest Process");
PROCESS_THREAD(rest_manager_process, ev, data)
{
PROCESS_BEGIN();
PROCESS_PAUSE();
/* Initialize the PERIODIC_RESOURCE timers, which will be handled by this process. */
periodic_resource_t* periodic_resource = NULL;
for (periodic_resource = (periodic_resource_t*) list_head(restful_periodic_services); periodic_resource; periodic_resource = periodic_resource->next) {
if (periodic_resource->period) {
PRINTF("Periodic: Set timer for %s to %lu\n", periodic_resource->resource->url, periodic_resource->period);
etimer_set(&periodic_resource->periodic_timer, periodic_resource->period);
}
}
while (1) {
PROCESS_WAIT_EVENT();
if (ev == PROCESS_EVENT_TIMER) {
for (periodic_resource = (periodic_resource_t*)list_head(restful_periodic_services);periodic_resource;periodic_resource = periodic_resource->next) {
if (periodic_resource->period && etimer_expired(&periodic_resource->periodic_timer)) {
PRINTF("Periodic: etimer expired for /%s (period: %lu)\n", periodic_resource->resource->url, periodic_resource->period);
/* Call the periodic_handler function if it exists. */
if (periodic_resource->periodic_handler) {
(periodic_resource->periodic_handler)(periodic_resource->resource);
}
etimer_reset(&periodic_resource->periodic_timer);
}
}
}
}
PROCESS_END();
}

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apps/erbium/erbium.h
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/*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An abstraction layer for RESTful Web services
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef ERBIUM_H_
#define ERBIUM_H_
/*includes*/
#include <stdio.h>
#include "contiki.h"
#include "contiki-lib.h"
/*
* The maximum buffer size that is provided for resource responses and must be respected due to the limited IP buffer.
* Larger data must be handled by the resource and will be sent chunk-wise through a TCP stream or CoAP blocks.
*/
#ifndef REST_MAX_CHUNK_SIZE
#define REST_MAX_CHUNK_SIZE 128
#endif
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a) : (b))
#endif /* MIN */
/* REST method types */
typedef enum {
/* methods to handle */
METHOD_GET = (1 << 0),
METHOD_POST = (1 << 1),
METHOD_PUT = (1 << 2),
METHOD_DELETE = (1 << 3),
/* special flags */
HAS_SUB_RESOURCES = (1<<7)
} rest_resource_flags_t;
struct resource_s;
struct periodic_resource_s;
/* Signatures of handler functions. */
typedef void (*restful_handler) (void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
typedef int (*restful_pre_handler) (struct resource_s *resource, void* request, void* response);
typedef void (*restful_post_handler) (struct resource_s *resource, void* request, void* response);
typedef void (*restful_periodic_handler) (struct resource_s* resource);
typedef void (*restful_response_handler) (void *data, void* response);
/* Signature of the rest-engine service function. */
typedef int (* service_callback_t)(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/**
* The structure of a MAC protocol driver in Contiki.
*/
struct rest_implementation_status
{
const unsigned int OK; /* CONTENT_2_05, OK_200 */
const unsigned int CREATED; /* CREATED_2_01, CREATED_201 */
const unsigned int CHANGED; /* CHANGED_2_04, NO_CONTENT_204 */
const unsigned int DELETED; /* DELETED_2_02, NO_CONTENT_204 */
const unsigned int NOT_MODIFIED; /* VALID_2_03, NOT_MODIFIED_304 */
const unsigned int BAD_REQUEST; /* BAD_REQUEST_4_00, BAD_REQUEST_400 */
const unsigned int UNAUTHORIZED; /* UNAUTHORIZED_4_01, UNAUTHORIZED_401 */
const unsigned int BAD_OPTION; /* BAD_OPTION_4_02, BAD_REQUEST_400 */
const unsigned int FORBIDDEN; /* FORBIDDEN_4_03, FORBIDDEN_403 */
const unsigned int NOT_FOUND; /* NOT_FOUND_4_04, NOT_FOUND_404 */
const unsigned int METHOD_NOT_ALLOWED; /* METHOD_NOT_ALLOWED_4_05, METHOD_NOT_ALLOWED_405 */
const unsigned int NOT_ACCEPTABLE; /* NOT_ACCEPTABLE_4_06, NOT_ACCEPTABLE_406 */
const unsigned int REQUEST_ENTITY_TOO_LARGE; /* REQUEST_ENTITY_TOO_LARGE_4_13, REQUEST_ENTITY_TOO_LARGE_413 */
const unsigned int UNSUPPORTED_MEDIA_TYPE; /* UNSUPPORTED_MEDIA_TYPE_4_15, UNSUPPORTED_MEDIA_TYPE_415 */
const unsigned int INTERNAL_SERVER_ERROR; /* INTERNAL_SERVER_ERROR_5_00, INTERNAL_SERVER_ERROR_500 */
const unsigned int NOT_IMPLEMENTED; /* NOT_IMPLEMENTED_5_01, NOT_IMPLEMENTED_501 */
const unsigned int BAD_GATEWAY; /* BAD_GATEWAY_5_02, BAD_GATEWAY_502 */
const unsigned int SERVICE_UNAVAILABLE; /* SERVICE_UNAVAILABLE_5_03, SERVICE_UNAVAILABLE_503 */
const unsigned int GATEWAY_TIMEOUT; /* GATEWAY_TIMEOUT_5_04, GATEWAY_TIMEOUT_504 */
const unsigned int PROXYING_NOT_SUPPORTED; /* PROXYING_NOT_SUPPORTED_5_05, INTERNAL_SERVER_ERROR_500 */
};
struct rest_implementation_type
{
unsigned int TEXT_PLAIN;
unsigned int TEXT_XML;
unsigned int TEXT_CSV;
unsigned int TEXT_HTML;
unsigned int IMAGE_GIF;
unsigned int IMAGE_JPEG;
unsigned int IMAGE_PNG;
unsigned int IMAGE_TIFF;
unsigned int AUDIO_RAW;
unsigned int VIDEO_RAW;
unsigned int APPLICATION_LINK_FORMAT;
unsigned int APPLICATION_XML;
unsigned int APPLICATION_OCTET_STREAM;
unsigned int APPLICATION_RDF_XML;
unsigned int APPLICATION_SOAP_XML;
unsigned int APPLICATION_ATOM_XML;
unsigned int APPLICATION_XMPP_XML;
unsigned int APPLICATION_EXI;
unsigned int APPLICATION_FASTINFOSET;
unsigned int APPLICATION_SOAP_FASTINFOSET;
unsigned int APPLICATION_JSON;
unsigned int APPLICATION_X_OBIX_BINARY;
};
/*
* Data structure representing a resource in REST.
*/
struct resource_s {
struct resource_s *next; /* for LIST, points to next resource defined */
rest_resource_flags_t flags; /* handled RESTful methods */
const char* url; /*handled URL*/
const char* attributes; /* link-format attributes */
restful_handler handler; /* handler function */
restful_pre_handler pre_handler; /* to be called before handler, may perform initializations */
restful_post_handler post_handler; /* to be called after handler, may perform finalizations (cleanup, etc) */
void* user_data; /* pointer to user specific data */
unsigned int benchmark; /* to benchmark resource handler, used for separate response */
};
typedef struct resource_s resource_t;
struct periodic_resource_s {
struct periodic_resource_s *next; /* for LIST, points to next resource defined */
resource_t *resource;
uint32_t period;
struct etimer periodic_timer;
restful_periodic_handler periodic_handler;
};
typedef struct periodic_resource_s periodic_resource_t;
struct rest_implementation {
char *name;
/** Initialize the REST implementation. */
void (* init)(void);
/** Register the RESTful service callback at implementation */
void (* set_service_callback)(service_callback_t callback);
/** Get request URI path */
int (* get_url)(void *request, const char **url);
int (* set_url)(void *request, const char *url);
/** Get the method of a request. */
rest_resource_flags_t (* get_method_type)(void *request);
/** Set the status code of a response. */
int (* set_response_status)(void *response, unsigned int code);
/** Get the content-type of a request. */
unsigned int (* get_header_content_type)(void *request);
/** Set the Content-Type of a response. */
int (* set_header_content_type)(void *response, unsigned int content_type);
/** Get the Accept types of a request. */
int (* get_header_accept)(void *request, const uint16_t **accept);
/** Get the Length option of a request. */
int (* get_header_length)(void *request, uint32_t *size);
/** Set the Length option of a response. */
int (* set_header_length)(void *response, uint32_t size);
/** Get the Max-Age option of a request. */
int (* get_header_max_age)(void *request, uint32_t *age);
/** Set the Max-Age option of a response. */
int (* set_header_max_age)(void *response, uint32_t age);
/** Set the ETag option of a response. */
int (* set_header_etag)(void *response, const uint8_t *etag, size_t length);
/** Get the If-Match option of a request. */
int (* get_header_if_match)(void *request, const uint8_t **etag);
/** Get the If-Match option of a request. */
int (* get_header_if_none_match)(void *request);
/** Get the Host option of a request. */
int (* get_header_host)(void *request, const char **host);
/** Set the location option of a response. */
int (* set_header_location)(void *response, const char *location);
/** Get the payload option of a request. */
int (* get_request_payload)(void *request, const uint8_t **payload);
/** Set the payload option of a response. */
int (* set_response_payload)(void *response, const void *payload, size_t length);
/** Get the query string of a request. */
int (* get_query)(void *request, const char **value);
/** Get the value of a request query key-value pair. */
int (* get_query_variable)(void *request, const char *name, const char **value);
/** Get the value of a request POST key-value pair. */
int (* get_post_variable)(void *request, const char *name, const char **value);
/** Send the payload to all subscribers of the resource at url. */
void (* notify_subscribers)(resource_t *resource, int32_t counter, void *notification);
/** The handler for resource subscriptions. */
restful_post_handler subscription_handler;
/** A default pre-handler that is assigned with the RESOURCE macro. */
restful_pre_handler default_pre_handler;
/** A default post-handler that is assigned with the RESOURCE macro. */
restful_post_handler default_post_handler;
/* REST status codes. */
const struct rest_implementation_status status;
/* REST content-types. */
const struct rest_implementation_type type;
};
/*
* Instance of REST implementation
*/
extern const struct rest_implementation REST;
/*
* Macro to define a Resource
* Resources are statically defined for the sake of efficiency and better memory management.
*/
#define RESOURCE(name, flags, url, attributes) \
void name##_handler(void *, void *, uint8_t *, uint16_t, int32_t *); \
resource_t resource_##name = {NULL, flags, url, attributes, name##_handler, NULL, NULL, NULL}
/*
* Macro to define a sub-resource
* Make sure to define its parent resource beforehand and set 'parent' to that name.
*/
#define SUB_RESOURCE(name, flags, url, attributes, parent) \
resource_t resource_##name = {NULL, flags, url, attributes, parent##_handler, NULL, NULL, NULL}
/*
* Macro to define an event resource
* Like periodic resources, event resources have a post_handler that manages a subscriber list.
* Instead of a periodic_handler, an event_callback must be provided.
*/
#define EVENT_RESOURCE(name, flags, url, attributes) \
void name##_handler(void *, void *, uint8_t *, uint16_t, int32_t *); \
void name##_event_handler(resource_t*); \
resource_t resource_##name = {NULL, flags, url, attributes, name##_handler, NULL, NULL, NULL}
/*
* Macro to define a periodic resource
* The corresponding [name]_periodic_handler() function will be called every period.
* For instance polling a sensor and publishing a changed value to subscribed clients would be done there.
* The subscriber list will be maintained by the post_handler rest_subscription_handler() (see rest-mapping header file).
*/
#define PERIODIC_RESOURCE(name, flags, url, attributes, period) \
void name##_handler(void *, void *, uint8_t *, uint16_t, int32_t *); \
resource_t resource_##name = {NULL, flags, url, attributes, name##_handler, NULL, NULL, NULL}; \
void name##_periodic_handler(resource_t*); \
periodic_resource_t periodic_resource_##name = {NULL, &resource_##name, period, {{0}}, name##_periodic_handler}
/*
* Initializes REST framework and starts HTTP or COAP process
*/
void rest_init_engine(void);
/*
* Resources wanted to be accessible should be activated with the following code.
*/
void rest_activate_resource(resource_t* resource);
void rest_activate_periodic_resource(periodic_resource_t* periodic_resource);
void rest_activate_event_resource(resource_t* resource);
/*
* To be called by HTTP/COAP server as a callback function when a new service request appears.
* This function dispatches the corresponding RESTful service.
*/
int rest_invoke_restful_service(void* request, void* response, uint8_t *buffer, uint16_t buffer_size, int32_t *offset);
/*
* Returns the resource list
*/
list_t rest_get_resources(void);
/*
* Getter and setter methods for user specific data.
*/
void* rest_get_user_data(resource_t* resource);
void rest_set_user_data(resource_t* resource, void* user_data);
/*
* Sets the pre handler function of the Resource.
* If set, this function will be called just before the original handler function.
* Can be used to setup work before resource handling.
*/
void rest_set_pre_handler(resource_t* resource, restful_pre_handler pre_handler);
/*
* Sets the post handler function of the Resource.
* If set, this function will be called just after the original handler function.
* Can be used to do cleanup (deallocate memory, etc) after resource handling.
*/
void rest_set_post_handler(resource_t* resource, restful_post_handler post_handler);
/*
* Sets resource flags for special properties, e.g., handling of sub-resources of URI-path.
*/
void rest_set_special_flags(resource_t* resource, rest_resource_flags_t flags);
#endif /*ERBIUM_H_*/

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rest-engine_src = rest-engine.c

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Constants for the REST Engine (Erbium).
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef REST_CONSTANTS_H_
#define REST_CONSTANTS_H_
/**
* Generic status codes that are mapped to either HTTP or CoAP codes.
*/
struct rest_implementation_status {
const unsigned int OK; /* CONTENT_2_05, OK_200 */
const unsigned int CREATED; /* CREATED_2_01, CREATED_201 */
const unsigned int CHANGED; /* CHANGED_2_04, NO_CONTENT_204 */
const unsigned int DELETED; /* DELETED_2_02, NO_CONTENT_204 */
const unsigned int NOT_MODIFIED; /* VALID_2_03, NOT_MODIFIED_304 */
const unsigned int BAD_REQUEST; /* BAD_REQUEST_4_00, BAD_REQUEST_400 */
const unsigned int UNAUTHORIZED; /* UNAUTHORIZED_4_01, UNAUTHORIZED_401 */
const unsigned int BAD_OPTION; /* BAD_OPTION_4_02, BAD_REQUEST_400 */
const unsigned int FORBIDDEN; /* FORBIDDEN_4_03, FORBIDDEN_403 */
const unsigned int NOT_FOUND; /* NOT_FOUND_4_04, NOT_FOUND_404 */
const unsigned int METHOD_NOT_ALLOWED; /* METHOD_NOT_ALLOWED_4_05, METHOD_NOT_ALLOWED_405 */
const unsigned int NOT_ACCEPTABLE; /* NOT_ACCEPTABLE_4_06, NOT_ACCEPTABLE_406 */
const unsigned int REQUEST_ENTITY_TOO_LARGE; /* REQUEST_ENTITY_TOO_LARGE_4_13, REQUEST_ENTITY_TOO_LARGE_413 */
const unsigned int UNSUPPORTED_MEDIA_TYPE; /* UNSUPPORTED_MEDIA_TYPE_4_15, UNSUPPORTED_MEDIA_TYPE_415 */
const unsigned int INTERNAL_SERVER_ERROR; /* INTERNAL_SERVER_ERROR_5_00, INTERNAL_SERVER_ERROR_500 */
const unsigned int NOT_IMPLEMENTED; /* NOT_IMPLEMENTED_5_01, NOT_IMPLEMENTED_501 */
const unsigned int BAD_GATEWAY; /* BAD_GATEWAY_5_02, BAD_GATEWAY_502 */
const unsigned int SERVICE_UNAVAILABLE; /* SERVICE_UNAVAILABLE_5_03, SERVICE_UNAVAILABLE_503 */
const unsigned int GATEWAY_TIMEOUT; /* GATEWAY_TIMEOUT_5_04, GATEWAY_TIMEOUT_504 */
const unsigned int PROXYING_NOT_SUPPORTED; /* PROXYING_NOT_SUPPORTED_5_05, INTERNAL_SERVER_ERROR_500 */
};
/**
* List of Content-Formats which are Internet Media Types plus encoding.
* TODO This should be a constant enum taken from CoAP for both CoAP and HTTP.
*/
struct rest_implementation_type {
unsigned int TEXT_PLAIN;
unsigned int TEXT_XML;
unsigned int TEXT_CSV;
unsigned int TEXT_HTML;
unsigned int IMAGE_GIF;
unsigned int IMAGE_JPEG;
unsigned int IMAGE_PNG;
unsigned int IMAGE_TIFF;
unsigned int AUDIO_RAW;
unsigned int VIDEO_RAW;
unsigned int APPLICATION_LINK_FORMAT;
unsigned int APPLICATION_XML;
unsigned int APPLICATION_OCTET_STREAM;
unsigned int APPLICATION_RDF_XML;
unsigned int APPLICATION_SOAP_XML;
unsigned int APPLICATION_ATOM_XML;
unsigned int APPLICATION_XMPP_XML;
unsigned int APPLICATION_EXI;
unsigned int APPLICATION_FASTINFOSET;
unsigned int APPLICATION_SOAP_FASTINFOSET;
unsigned int APPLICATION_JSON;
unsigned int APPLICATION_X_OBIX_BINARY;
};
/**
* Resource flags for allowed methods and special functionalities.
*/
typedef enum {
NO_FLAGS = 0,
/* methods to handle */
METHOD_GET = (1 << 0),
METHOD_POST = (1 << 1),
METHOD_PUT = (1 << 2),
METHOD_DELETE = (1 << 3),
/* special flags */
HAS_SUB_RESOURCES = (1 << 4),
IS_SEPARATE = (1 << 5),
IS_OBSERVABLE = (1 << 6),
IS_PERIODIC = (1 << 7)
} rest_resource_flags_t;
#endif /* REST_CONSTANTS_H_ */

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An abstraction layer for RESTful Web services (Erbium).
* Inspired by RESTful Contiki by Dogan Yazar.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include <stdio.h>
#include "contiki.h"
#include "rest-engine.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
PROCESS(rest_engine_process, "REST Engine");
/*---------------------------------------------------------------------------*/
LIST(restful_services);
LIST(restful_periodic_services);
/*---------------------------------------------------------------------------*/
/*- REST Engine API ---------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/**
* \brief Initializes and starts the REST Engine process
*
* This function must be called by server processes before any resources are
* registered through rest_activate_resource().
*/
void
rest_init_engine(void)
{
list_init(restful_services);
REST.set_service_callback(rest_invoke_restful_service);
/* Start the RESTful server implementation. */
REST.init();
/*Start REST engine process */
process_start(&rest_engine_process, NULL);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Makes a resource available under the given URI path
* \param resource A pointer to a resource implementation
* \param path The URI path string for this resource
*
* The resource implementation must be imported first using the
* extern keyword. The build system takes care of compiling every
* *.c file in the ./resources/ sub-directory (see example Makefile).
*/
void
rest_activate_resource(resource_t *resource, char *path)
{
resource->url = path;
list_add(restful_services, resource);
PRINTF("Activating: %s\n", resource->url);
/* Only add periodic resources with a periodic_handler and a period > 0. */
if(resource->flags & IS_PERIODIC && resource->periodic->periodic_handler
&& resource->periodic->period) {
PRINTF("Periodic resource: %p (%s)\n", resource->periodic,
resource->periodic->resource->url);
list_add(restful_periodic_services, resource->periodic);
}
}
/*---------------------------------------------------------------------------*/
/*- Internal API ------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
list_t
rest_get_resources(void)
{
return restful_services;
}
/*---------------------------------------------------------------------------*/
int
rest_invoke_restful_service(void *request, void *response, uint8_t *buffer,
uint16_t buffer_size, int32_t *offset)
{
uint8_t found = 0;
uint8_t allowed = 1;
resource_t *resource = NULL;
const char *url = NULL;
for(resource = (resource_t *)list_head(restful_services);
resource; resource = resource->next) {
/* if the web service handles that kind of requests and urls matches */
if((REST.get_url(request, &url) == strlen(resource->url)
|| (REST.get_url(request, &url) > strlen(resource->url)
&& (resource->flags & HAS_SUB_RESOURCES)))
&& strncmp(resource->url, url, strlen(resource->url)) == 0) {
found = 1;
rest_resource_flags_t method = REST.get_method_type(request);
PRINTF("/%s, method %u, resource->flags %u\n", resource->url,
(uint16_t)method, resource->flags);
if((method & METHOD_GET) && resource->get_handler != NULL) {
/* call handler function */
resource->get_handler(request, response, buffer, buffer_size, offset);
} else if((method & METHOD_POST) && resource->post_handler != NULL) {
/* call handler function */
resource->post_handler(request, response, buffer, buffer_size,
offset);
} else if((method & METHOD_PUT) && resource->put_handler != NULL) {
/* call handler function */
resource->put_handler(request, response, buffer, buffer_size, offset);
} else if((method & METHOD_DELETE) && resource->delete_handler != NULL) {
/* call handler function */
resource->delete_handler(request, response, buffer, buffer_size,
offset);
} else {
allowed = 0;
REST.set_response_status(response, REST.status.METHOD_NOT_ALLOWED);
}
break;
}
}
if(!found) {
REST.set_response_status(response, REST.status.NOT_FOUND);
} else if(allowed) {
/* final handler for special flags */
if(resource->flags & IS_OBSERVABLE) {
REST.subscription_handler(resource, request, response);
}
}
return found & allowed;
}
/*-----------------------------------------------------------------------------------*/
PROCESS_THREAD(rest_engine_process, ev, data)
{
PROCESS_BEGIN();
/* pause to let REST server finish adding resources. */
PROCESS_PAUSE();
/* initialize the PERIODIC_RESOURCE timers, which will be handled by this process. */
periodic_resource_t *periodic_resource = NULL;
for(periodic_resource =
(periodic_resource_t *)list_head(restful_periodic_services);
periodic_resource; periodic_resource = periodic_resource->next) {
if(periodic_resource->periodic_handler && periodic_resource->period) {
PRINTF("Periodic: Set timer for /%s to %lu\n",
periodic_resource->resource->url, periodic_resource->period);
etimer_set(&periodic_resource->periodic_timer,
periodic_resource->period);
}
}
while(1) {
PROCESS_WAIT_EVENT();
if(ev == PROCESS_EVENT_TIMER) {
for(periodic_resource =
(periodic_resource_t *)list_head(restful_periodic_services);
periodic_resource; periodic_resource = periodic_resource->next) {
if(periodic_resource->period
&& etimer_expired(&periodic_resource->periodic_timer)) {
PRINTF("Periodic: etimer expired for /%s (period: %lu)\n",
periodic_resource->resource->url, periodic_resource->period);
/* Call the periodic_handler function, which was checked during adding to list. */
(periodic_resource->periodic_handler)();
etimer_reset(&periodic_resource->periodic_timer);
}
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* An abstraction layer for RESTful Web services (Erbium).
* Inspired by RESTful Contiki by Dogan Yazar.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef REST_ENGINE_H_
#define REST_ENGINE_H_
#include <stdio.h>
#include "contiki.h"
#include "contiki-lib.h"
#include "rest-constants.h"
/* list of valid REST Enigne implementations */
#define REGISTERED_ENGINE_ERBIUM coap_rest_implementation
#define REGISTERED_ENGINE_HELIUM http_rest_implementation
/* sanity check for configured implementation */
#if !defined(REST) || (REST != REGISTERED_ENGINE_ERBIUM && REST != REGISTERED_ENGINE_HELIUM)
#error "Define a valid REST Engine implementation (REST define)!"
#endif
/*
* The maximum buffer size that is provided for resource responses and must be respected due to the limited IP buffer.
* Larger data must be handled by the resource and will be sent chunk-wise through a TCP stream or CoAP blocks.
*/
#ifndef REST_MAX_CHUNK_SIZE
#define REST_MAX_CHUNK_SIZE 64
#endif
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif /* MIN */
struct resource_s;
struct periodic_resource_s;
/* signatures of handler functions */
typedef void (*restful_handler)(void *request, void *response,
uint8_t *buffer, uint16_t preferred_size,
int32_t *offset);
typedef void (*restful_final_handler)(struct resource_s *resource,
void *request, void *response);
typedef void (*restful_periodic_handler)(void);
typedef void (*restful_response_handler)(void *data, void *response);
typedef void (*restful_trigger_handler)(void);
/* signature of the rest-engine service function */
typedef int (*service_callback_t)(void *request, void *response,
uint8_t *buffer, uint16_t preferred_size,
int32_t *offset);
/* data structure representing a resource in REST */
struct resource_s {
struct resource_s *next; /* for LIST, points to next resource defined */
const char *url; /*handled URL */
rest_resource_flags_t flags; /* handled RESTful methods */
const char *attributes; /* link-format attributes */
restful_handler get_handler; /* handler function */
restful_handler post_handler; /* handler function */
restful_handler put_handler; /* handler function */
restful_handler delete_handler; /* handler function */
union {
struct periodic_resource_s *periodic; /* special data depending on flags */
restful_trigger_handler trigger;
restful_trigger_handler resume;
};
};
typedef struct resource_s resource_t;
struct periodic_resource_s {
struct periodic_resource_s *next; /* for LIST, points to next resource defined */
const resource_t *resource;
uint32_t period;
struct etimer periodic_timer;
const restful_periodic_handler periodic_handler;
};
typedef struct periodic_resource_s periodic_resource_t;
/*
* Macro to define a RESTful resource.
* Resources are statically defined for the sake of efficiency and better memory management.
*/
#define RESOURCE(name, attributes, get_handler, post_handler, put_handler, delete_handler) \
resource_t name = { NULL, NULL, NO_FLAGS, attributes, get_handler, post_handler, put_handler, delete_handler, { NULL } }
#define PARENT_RESOURCE(name, attributes, get_handler, post_handler, put_handler, delete_handler) \
resource_t name = { NULL, NULL, HAS_SUB_RESOURCES, attributes, get_handler, post_handler, put_handler, delete_handler, { NULL } }
#define SEPARATE_RESOURCE(name, attributes, get_handler, post_handler, put_handler, delete_handler, resume_handler) \
resource_t name = { NULL, NULL, IS_SEPARATE, attributes, get_handler, post_handler, put_handler, delete_handler, { .resume = resume_handler } }
#define EVENT_RESOURCE(name, attributes, get_handler, post_handler, put_handler, delete_handler, event_handler) \
resource_t name = { NULL, NULL, IS_OBSERVABLE, attributes, get_handler, post_handler, put_handler, delete_handler, { .trigger = event_handler } }
/*
* Macro to define a periodic resource.
* The corresponding [name]_periodic_handler() function will be called every period.
* For instance polling a sensor and publishing a changed value to subscribed clients would be done there.
* The subscriber list will be maintained by the final_handler rest_subscription_handler() (see rest-mapping header file).
*/
#define PERIODIC_RESOURCE(name, attributes, get_handler, post_handler, put_handler, delete_handler, period, periodic_handler) \
periodic_resource_t periodic_##name; \
resource_t name = { NULL, NULL, IS_OBSERVABLE | IS_PERIODIC, attributes, get_handler, post_handler, put_handler, delete_handler, { .periodic = &periodic_##name } }; \
periodic_resource_t periodic_##name = { NULL, &name, period, { { 0 } }, periodic_handler };
struct rest_implementation {
char *name;
/** Initialize the REST implementation. */
void (*init)(void);
/** Register the RESTful service callback at implementation. */
void (*set_service_callback)(service_callback_t callback);
/** Get request URI path. */
int (*get_url)(void *request, const char **url);
/** Get the method of a request. */
rest_resource_flags_t (*get_method_type)(void *request);
/** Set the status code of a response. */
int (*set_response_status)(void *response, unsigned int code);
/** Get the content-type of a request. */
int (*get_header_content_type)(void *request,
unsigned int *content_format);
/** Set the Content-Type of a response. */
int (*set_header_content_type)(void *response,
unsigned int content_format);
/** Get the Accept types of a request. */
int (*get_header_accept)(void *request, unsigned int *accept);
/** Get the Length option of a request. */
int (*get_header_length)(void *request, uint32_t *size);
/** Set the Length option of a response. */
int (*set_header_length)(void *response, uint32_t size);
/** Get the Max-Age option of a request. */
int (*get_header_max_age)(void *request, uint32_t *age);
/** Set the Max-Age option of a response. */
int (*set_header_max_age)(void *response, uint32_t age);
/** Set the ETag option of a response. */
int (*set_header_etag)(void *response, const uint8_t *etag,
size_t length);
/** Get the If-Match option of a request. */
int (*get_header_if_match)(void *request, const uint8_t **etag);
/** Get the If-Match option of a request. */
int (*get_header_if_none_match)(void *request);
/** Get the Host option of a request. */
int (*get_header_host)(void *request, const char **host);
/** Set the location option of a response. */
int (*set_header_location)(void *response, const char *location);
/** Get the payload option of a request. */
int (*get_request_payload)(void *request, const uint8_t **payload);
/** Set the payload option of a response. */
int (*set_response_payload)(void *response, const void *payload,
size_t length);
/** Get the query string of a request. */
int (*get_query)(void *request, const char **value);
/** Get the value of a request query key-value pair. */
int (*get_query_variable)(void *request, const char *name,
const char **value);
/** Get the value of a request POST key-value pair. */
int (*get_post_variable)(void *request, const char *name,
const char **value);
/** Send the payload to all subscribers of the resource at url. */
void (*notify_subscribers)(resource_t *resource);
/** The handler for resource subscriptions. */
restful_final_handler subscription_handler;
/* REST status codes. */
const struct rest_implementation_status status;
/* REST content-types. */
const struct rest_implementation_type type;
};
/* instance of REST implementation */
extern const struct rest_implementation REST;
/*
* To be called by HTTP/COAP server as a callback function when a new service request appears.
* This function dispatches the corresponding RESTful service.
*/
int rest_invoke_restful_service(void *request, void *response,
uint8_t *buffer, uint16_t buffer_size,
int32_t *offset);
/*---------------------------------------------------------------------------*/
/**
* \brief Initializes REST framework and starts the HTTP or CoAP process.
*/
void rest_init_engine(void);
/*---------------------------------------------------------------------------*/
/**
*
* \brief Resources wanted to be accessible should be activated with the following code.
* \param resource
* A RESTful resource defined through the RESOURCE macros.
* \param path
* The local URI path where to provide the resource.
*/
void rest_activate_resource(resource_t *resource, char *path);
/*---------------------------------------------------------------------------*/
/**
* \brief Returns the list of registered RESTful resources.
* \return The resource list.
*/
list_t rest_get_resources(void);
/*---------------------------------------------------------------------------*/
#endif /*REST_ENGINE_H_ */

97
examples/er-rest-example/Makefile
View File

@ -1,71 +1,37 @@
all: er-example-server er-example-client all: er-example-server er-example-client
# use this target explicitly if requried: er-plugtest-server # use target "er-plugtest-server" explicitly when requried
# variable for this Makefile
# configure CoAP implementation (3|7|12|13) (er-coap-07 also supports CoAP draft 08)
WITH_COAP=13
# for some platforms
UIP_CONF_IPV6=1
# IPv6 make config disappeared completely
CFLAGS += -DUIP_CONF_IPV6=1
CONTIKI=../.. CONTIKI=../..
# Contiki IPv6 configuration
WITH_UIP6=1
UIP_CONF_IPV6=1
CFLAGS += -DUIP_CONF_IPV6=1
CFLAGS += -DUIP_CONF_IPV6_RPL=1
CFLAGS += -DPROJECT_CONF_H=\"project-conf.h\" CFLAGS += -DPROJECT_CONF_H=\"project-conf.h\"
# variable for Makefile.include # automatically build RESTful resources
ifneq ($(TARGET), minimal-net) REST_RESOURCES_DIR = ./resources
CFLAGS += -DUIP_CONF_IPV6_RPL=1 ifndef TARGET
REST_RESOURCES_FILES = $(notdir $(shell find $(REST_RESOURCES_DIR) -name '*.c'))
else else
# minimal-net does not support RPL under Linux and is mostly used to test CoAP only ifeq ($(TARGET), native)
${info INFO: compiling without RPL} REST_RESOURCES_FILES = $(notdir $(shell find $(REST_RESOURCES_DIR) -name '*.c'))
CFLAGS += -DUIP_CONF_IPV6_RPL=0 else
CFLAGS += -DHARD_CODED_ADDRESS=\"fdfd::10\" REST_RESOURCES_FILES = $(notdir $(shell find $(REST_RESOURCES_DIR) -name '*.c' ! -name 'res-plugtest*'))
${info INFO: compiling with large buffers}
CFLAGS += -DUIP_CONF_BUFFER_SIZE=2048
CFLAGS += -DREST_MAX_CHUNK_SIZE=1024
CFLAGS += -DCOAP_MAX_HEADER_SIZE=640
endif endif
endif
PROJECTDIRS += $(REST_RESOURCES_DIR)
PROJECT_SOURCEFILES += $(REST_RESOURCES_FILES)
# linker optimizations # linker optimizations
SMALL=1 SMALL=1
# REST framework, requires WITH_COAP # REST Engine shall use Erbium CoAP implementation
ifeq ($(WITH_COAP), 13) APPS += er-coap
${info INFO: compiling with CoAP-13} APPS += rest-engine
CFLAGS += -DWITH_COAP=13
CFLAGS += -DREST=coap_rest_implementation
CFLAGS += -DUIP_CONF_TCP=0
APPS += er-coap-13
else ifeq ($(WITH_COAP), 12)
${info INFO: compiling with CoAP-12}
CFLAGS += -DWITH_COAP=12
CFLAGS += -DREST=coap_rest_implementation
CFLAGS += -DUIP_CONF_TCP=0
APPS += er-coap-12
else ifeq ($(WITH_COAP), 7)
${info INFO: compiling with CoAP-08}
CFLAGS += -DWITH_COAP=7
CFLAGS += -DREST=coap_rest_implementation
CFLAGS += -DUIP_CONF_TCP=0
APPS += er-coap-07
else ifeq ($(WITH_COAP), 3)
${info INFO: compiling with CoAP-03}
CFLAGS += -DWITH_COAP=3
CFLAGS += -DREST=coap_rest_implementation
CFLAGS += -DUIP_CONF_TCP=0
APPS += er-coap-03
else
${info INFO: compiling with HTTP}
CFLAGS += -DWITH_HTTP
CFLAGS += -DREST=http_rest_implementation
CFLAGS += -DUIP_CONF_TCP=1
APPS += er-http-engine
endif
APPS += erbium
# optional rules to get assembly # optional rules to get assembly
#CUSTOM_RULE_C_TO_OBJECTDIR_O = 1 #CUSTOM_RULE_C_TO_OBJECTDIR_O = 1
@ -73,6 +39,16 @@ APPS += erbium
include $(CONTIKI)/Makefile.include include $(CONTIKI)/Makefile.include
# minimal-net target is currently broken in Contiki
ifeq ($(TARGET), minimal-net)
CFLAGS += -DHARD_CODED_ADDRESS=\"fdfd::10\"
${info INFO: er-example compiling with large buffers}
CFLAGS += -DUIP_CONF_BUFFER_SIZE=1300
CFLAGS += -DREST_MAX_CHUNK_SIZE=1024
CFLAGS += -DCOAP_MAX_HEADER_SIZE=176
CFLAGS += -DUIP_CONF_IPV6_RPL=0
endif
# optional rules to get assembly # optional rules to get assembly
#$(OBJECTDIR)/%.o: asmdir/%.S #$(OBJECTDIR)/%.o: asmdir/%.S
# $(CC) $(CFLAGS) -MMD -c $< -o $@ # $(CC) $(CFLAGS) -MMD -c $< -o $@
@ -89,7 +65,10 @@ connect-router: $(CONTIKI)/tools/tunslip6
sudo $(CONTIKI)/tools/tunslip6 aaaa::1/64 sudo $(CONTIKI)/tools/tunslip6 aaaa::1/64
connect-router-cooja: $(CONTIKI)/tools/tunslip6 connect-router-cooja: $(CONTIKI)/tools/tunslip6
sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::1/64 sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 -p 60001 aaaa::1/64
connect-router-native: $(CONTIKI)/examples/ipv6/native-border-router/border-router.native
sudo $(CONTIKI)/exmples/ipv6/native-border-router/border-router.native -a 127.0.0.1 -p 60001 aaaa::1/64
connect-minimal: connect-minimal:
sudo ip address add fdfd::1/64 dev tap0 sudo ip address add fdfd::1/64 dev tap0

25
examples/er-rest-example/README.md
View File

@ -21,6 +21,7 @@ PRELIMINARIES
You can disable RDC in border-router project-conf.h (not really required as BR keeps radio turned on). You can disable RDC in border-router project-conf.h (not really required as BR keeps radio turned on).
#undef NETSTACK_CONF_RDC #undef NETSTACK_CONF_RDC
#define NETSTACK_CONF_RDC nullrdc_driver #define NETSTACK_CONF_RDC nullrdc_driver
- Alternatively, you can use the native-border-router together with the slip-radio.
- For convenience, define the Cooja addresses in /etc/hosts - For convenience, define the Cooja addresses in /etc/hosts
aaaa::0212:7401:0001:0101 cooja1 aaaa::0212:7401:0001:0101 cooja1
aaaa::0212:7402:0002:0202 cooja2 aaaa::0212:7402:0002:0202 cooja2
@ -125,10 +126,10 @@ Under Windows/Cygwin, WPCAP might need a patch in
DETAILS DETAILS
------- -------
Erbium currently implements draft 13. Central features are commented in Erbium implements the Proposed Standard of CoAP. Central features are commented
er-example-server.c. In general, apps/er-coap-13 supports: in er-example-server.c. In general, apps/er-coap supports:
- All draft 13 header options - All draft-18 header options
- CON Retransmissions (note COAP_MAX_OPEN_TRANSACTIONS) - CON Retransmissions (note COAP_MAX_OPEN_TRANSACTIONS)
- Blockwise Transfers (note REST_MAX_CHUNK_SIZE, see er-plugtest-server.c for - Blockwise Transfers (note REST_MAX_CHUNK_SIZE, see er-plugtest-server.c for
Block1 uploads) Block1 uploads)
@ -138,24 +139,6 @@ er-example-server.c. In general, apps/er-coap-13 supports:
- Observing Resources (see EVENT_ and PRERIODIC_RESOURCE, note - Observing Resources (see EVENT_ and PRERIODIC_RESOURCE, note
COAP_MAX_OBSERVERS) COAP_MAX_OBSERVERS)
REST IMPLEMENTATIONS
--------------------
The Makefile uses WITH_COAP to configure different implementations for the
Erbium (Er) REST Engine.
- WITH_COAP=13 uses Erbium CoAP 13 apps/er-coap-13/. The default port for
coap-13 is 5683.
- WITH_COAP=12 uses Erbium CoAP 12 apps/er-coap-12/. The default port for
coap-12 is 5683.
- WITH_COAP=7 uses Erbium CoAP 08 apps/er-coap-07/. The default port for
coap-07/-08 is 5683.
- WITH_COAP=3 uses Erbium CoAP 03 apps/er-coap-03/. The default port for
coap-03 is 61616. er-coap-03 produces some warnings, as it not fully
maintained anymore.
- WITH_COAP=0 is a stub to link an Erbium HTTP engine that uses the same
resource abstraction (REST.x() functions and RESOURCE macros.
TODOs TODOs
----- -----

67
examples/er-rest-example/er-example-client.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2013, Matthias Kovatsch * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,7 +31,7 @@
/** /**
* \file * \file
* Erbium (Er) CoAP client example * Erbium (Er) CoAP client example.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
@ -39,49 +39,34 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include "contiki.h" #include "contiki.h"
#include "contiki-net.h" #include "contiki-net.h"
#include "er-coap-engine.h"
#include "dev/button-sensor.h" #include "dev/button-sensor.h"
#if WITH_COAP == 3
#include "er-coap-03-engine.h"
#elif WITH_COAP == 6
#include "er-coap-06-engine.h"
#elif WITH_COAP == 7
#include "er-coap-07-engine.h"
#elif WITH_COAP == 12
#include "er-coap-12-engine.h"
#elif WITH_COAP == 13
#include "er-coap-13-engine.h"
#else
#error "CoAP version defined by WITH_COAP not implemented"
#endif
#define DEBUG 0 #define DEBUG 0
#if DEBUG #if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__) #define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15]) #define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5]) #define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else #else
#define PRINTF(...) #define PRINTF(...)
#define PRINT6ADDR(addr) #define PRINT6ADDR(addr)
#define PRINTLLADDR(addr) #define PRINTLLADDR(addr)
#endif #endif
/* TODO: This server address is hard-coded for Cooja. */ /* FIXME: This server address is hard-coded for Cooja and link-local for unconnected border router. */
#define SERVER_NODE(ipaddr) uip_ip6addr(ipaddr, 0xaaaa, 0, 0, 0, 0x0212, 0x7402, 0x0002, 0x0202) /* cooja2 */ #define SERVER_NODE(ipaddr) uip_ip6addr(ipaddr, 0xfe80, 0, 0, 0, 0x0212, 0x7402, 0x0002, 0x0202) /* cooja2 */
/* #define SERVER_NODE(ipaddr) uip_ip6addr(ipaddr, 0xbbbb, 0, 0, 0, 0, 0, 0, 0x1) */
#define LOCAL_PORT UIP_HTONS(COAP_DEFAULT_PORT+1) #define LOCAL_PORT UIP_HTONS(COAP_DEFAULT_PORT + 1)
#define REMOTE_PORT UIP_HTONS(COAP_DEFAULT_PORT) #define REMOTE_PORT UIP_HTONS(COAP_DEFAULT_PORT)
#define TOGGLE_INTERVAL 10 #define TOGGLE_INTERVAL 10
PROCESS(coap_client_example, "COAP Client Example"); PROCESS(er_example_client, "Erbium Example Client");
AUTOSTART_PROCESSES(&coap_client_example); AUTOSTART_PROCESSES(&er_example_client);
uip_ipaddr_t server_ipaddr; uip_ipaddr_t server_ipaddr;
static struct etimer et; static struct etimer et;
@ -89,7 +74,8 @@ static struct etimer et;
/* Example URIs that can be queried. */ /* Example URIs that can be queried. */
#define NUMBER_OF_URLS 4 #define NUMBER_OF_URLS 4
/* leading and ending slashes only for demo purposes, get cropped automatically when setting the Uri-Path */ /* leading and ending slashes only for demo purposes, get cropped automatically when setting the Uri-Path */
char* service_urls[NUMBER_OF_URLS] = {".well-known/core", "/actuators/toggle", "battery/", "error/in//path"}; char *service_urls[NUMBER_OF_URLS] =
{ ".well-known/core", "/actuators/toggle", "battery/", "error/in//path" };
#if PLATFORM_HAS_BUTTON #if PLATFORM_HAS_BUTTON
static int uri_switch = 0; static int uri_switch = 0;
#endif #endif
@ -101,19 +87,19 @@ client_chunk_handler(void *response)
const uint8_t *chunk; const uint8_t *chunk;
int len = coap_get_payload(response, &chunk); int len = coap_get_payload(response, &chunk);
printf("|%.*s", len, (char *)chunk); printf("|%.*s", len, (char *)chunk);
} }
PROCESS_THREAD(er_example_client, ev, data)
PROCESS_THREAD(coap_client_example, ev, data)
{ {
PROCESS_BEGIN(); PROCESS_BEGIN();
static coap_packet_t request[1]; /* This way the packet can be treated as pointer as usual. */ static coap_packet_t request[1]; /* This way the packet can be treated as pointer as usual. */
SERVER_NODE(&server_ipaddr); SERVER_NODE(&server_ipaddr);
/* receives all CoAP messages */ /* receives all CoAP messages */
coap_receiver_init(); coap_init_engine();
etimer_set(&et, TOGGLE_INTERVAL * CLOCK_SECOND); etimer_set(&et, TOGGLE_INTERVAL * CLOCK_SECOND);
@ -125,28 +111,29 @@ PROCESS_THREAD(coap_client_example, ev, data)
while(1) { while(1) {
PROCESS_YIELD(); PROCESS_YIELD();
if (etimer_expired(&et)) { if(etimer_expired(&et)) {
printf("--Toggle timer--\n"); printf("--Toggle timer--\n");
/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */ /* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
coap_init_message(request, COAP_TYPE_CON, COAP_POST, 0 ); coap_init_message(request, COAP_TYPE_CON, COAP_POST, 0);
coap_set_header_uri_path(request, service_urls[1]); coap_set_header_uri_path(request, service_urls[1]);
const char msg[] = "Toggle!"; const char msg[] = "Toggle!";
coap_set_payload(request, (uint8_t *)msg, sizeof(msg)-1);
coap_set_payload(request, (uint8_t *)msg, sizeof(msg) - 1);
PRINT6ADDR(&server_ipaddr); PRINT6ADDR(&server_ipaddr);
PRINTF(" : %u\n", UIP_HTONS(REMOTE_PORT)); PRINTF(" : %u\n", UIP_HTONS(REMOTE_PORT));
COAP_BLOCKING_REQUEST(&server_ipaddr, REMOTE_PORT, request, client_chunk_handler); COAP_BLOCKING_REQUEST(&server_ipaddr, REMOTE_PORT, request,
client_chunk_handler);
printf("\n--Done--\n"); printf("\n--Done--\n");
etimer_reset(&et); etimer_reset(&et);
#if PLATFORM_HAS_BUTTON #if PLATFORM_HAS_BUTTON
} else if (ev == sensors_event && data == &button_sensor) { } else if(ev == sensors_event && data == &button_sensor) {
/* send a request to notify the end of the process */ /* send a request to notify the end of the process */
@ -158,13 +145,13 @@ PROCESS_THREAD(coap_client_example, ev, data)
PRINT6ADDR(&server_ipaddr); PRINT6ADDR(&server_ipaddr);
PRINTF(" : %u\n", UIP_HTONS(REMOTE_PORT)); PRINTF(" : %u\n", UIP_HTONS(REMOTE_PORT));
COAP_BLOCKING_REQUEST(&server_ipaddr, REMOTE_PORT, request, client_chunk_handler); COAP_BLOCKING_REQUEST(&server_ipaddr, REMOTE_PORT, request,
client_chunk_handler);
printf("\n--Done--\n"); printf("\n--Done--\n");
uri_switch = (uri_switch+1) % NUMBER_OF_URLS; uri_switch = (uri_switch + 1) % NUMBER_OF_URLS;
#endif #endif
} }
} }

838
examples/er-rest-example/er-example-server.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2013, Matthias Kovatsch * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,7 +31,7 @@
/** /**
* \file * \file
* Erbium (Er) REST Engine example (with CoAP-specific code) * Erbium (Er) REST Engine example.
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
@ -41,757 +41,53 @@
#include <string.h> #include <string.h>
#include "contiki.h" #include "contiki.h"
#include "contiki-net.h" #include "contiki-net.h"
#include "rest-engine.h"
#if PLATFORM_HAS_BUTTON
/* Define which resources to include to meet memory constraints. */
#define REST_RES_HELLO 0
#define REST_RES_CHUNKS 1
#define REST_RES_SEPARATE 1
#define REST_RES_PUSHING 1
#define REST_RES_EVENT 1
#define REST_RES_SUB 1
#define REST_RES_LEDS 0
#define REST_RES_TOGGLE 1
#define REST_RES_LIGHT 0
#define REST_RES_BATTERY 0
#define REST_RES_RADIO 0
#define REST_RES_MIRROR 0 /* causes largest code size */
#include "erbium.h"
#if defined (PLATFORM_HAS_BUTTON)
#include "dev/button-sensor.h" #include "dev/button-sensor.h"
#endif #endif
#if defined (PLATFORM_HAS_LEDS)
#include "dev/leds.h"
#endif
#if defined (PLATFORM_HAS_LIGHT)
#include "dev/light-sensor.h"
#endif
#if defined (PLATFORM_HAS_BATTERY)
#include "dev/battery-sensor.h"
#endif
#if defined (PLATFORM_HAS_SHT11)
#include "dev/sht11/sht11-sensor.h"
#endif
#if defined (PLATFORM_HAS_RADIO)
#include "dev/radio-sensor.h"
#endif
/* For CoAP-specific example: not required for normal RESTful Web service. */
#if WITH_COAP == 3
#include "er-coap-03.h"
#elif WITH_COAP == 7
#include "er-coap-07.h"
#elif WITH_COAP == 12
#include "er-coap-12.h"
#elif WITH_COAP == 13
#include "er-coap-13.h"
#else
#warning "Erbium example without CoAP-specifc functionality"
#endif /* CoAP-specific example */
#define DEBUG 0 #define DEBUG 0
#if DEBUG #if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__) #define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15]) #define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5]) #define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else #else
#define PRINTF(...) #define PRINTF(...)
#define PRINT6ADDR(addr) #define PRINT6ADDR(addr)
#define PRINTLLADDR(addr) #define PRINTLLADDR(addr)
#endif #endif
/******************************************************************************/
#if REST_RES_HELLO
/* /*
* Resources are defined by the RESOURCE macro. * Resources to be activated need to be imported through the extern keyword.
* Signature: resource name, the RESTful methods it handles, and its URI path (omitting the leading slash). * The build system automatically compiles the resources in the corresponding sub-directory.
*/ */
RESOURCE(helloworld, METHOD_GET, "hello", "title=\"Hello world: ?len=0..\";rt=\"Text\""); extern resource_t
res_hello,
/* res_mirror,
* A handler function named [resource name]_handler must be implemented for each RESOURCE. res_chunks,
* A buffer for the response payload is provided through the buffer pointer. Simple resources can ignore res_separate,
* preferred_size and offset, but must respect the REST_MAX_CHUNK_SIZE limit for the buffer. res_push,
* If a smaller block size is requested for CoAP, the REST framework automatically splits the data. res_event,
*/ res_sub,
void res_b1_sep_b2;
helloworld_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) #if PLATFORM_HAS_LEDS
{ extern resource_t res_leds, res_toggle;
const char *len = NULL; #endif
/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */ #if PLATFORM_HAS_LIGHT
char const * const message = "Hello World! ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxy"; extern resource_t res_light;
int length = 12; /* |<-------->| */
/* The query string can be retrieved by rest_get_query() or parsed for its key-value pairs. */
if (REST.get_query_variable(request, "len", &len)) {
length = atoi(len);
if (length<0) length = 0;
if (length>REST_MAX_CHUNK_SIZE) length = REST_MAX_CHUNK_SIZE;
memcpy(buffer, message, length);
} else {
memcpy(buffer, message, length);
}
REST.set_header_content_type(response, REST.type.TEXT_PLAIN); /* text/plain is the default, hence this option could be omitted. */
REST.set_header_etag(response, (uint8_t *) &length, 1);
REST.set_response_payload(response, buffer, length);
}
#endif #endif
/******************************************************************************/ PROCESS(er_example_server, "Erbium Example Server");
#if REST_RES_MIRROR AUTOSTART_PROCESSES(&er_example_server);
/* This resource mirrors the incoming request. It shows how to access the options and how to set them for the response. */
RESOURCE(mirror, METHOD_GET | METHOD_POST | METHOD_PUT | METHOD_DELETE, "debug/mirror", "title=\"Returns your decoded message\";rt=\"Debug\"");
void PROCESS_THREAD(er_example_server, ev, data)
mirror_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* The ETag and Token is copied to the header. */
uint8_t opaque[] = {0x0A, 0xBC, 0xDE};
/* Strings are not copied, so use static string buffers or strings in .text memory (char *str = "string in .text";). */
static char location[] = {'/','f','/','a','?','k','&','e', 0};
/* Getter for the header option Content-Type. If the option is not set, text/plain is returned by default. */
unsigned int content_type = REST.get_header_content_type(request);
/* The other getters copy the value (or string/array pointer) to the given pointers and return 1 for success or the length of strings/arrays. */
uint32_t max_age_and_size = 0;
const char *str = NULL;
uint32_t observe = 0;
const uint8_t *bytes = NULL;
uint32_t block_num = 0;
uint8_t block_more = 0;
uint16_t block_size = 0;
const char *query = "";
int len = 0;
/* Mirror the received header options in the response payload. Unsupported getters (e.g., rest_get_header_observe() with HTTP) will return 0. */
int strpos = 0;
/* snprintf() counts the terminating '\0' to the size parameter.
* The additional byte is taken care of by allocating REST_MAX_CHUNK_SIZE+1 bytes in the REST framework.
* Add +1 to fill the complete buffer, as the payload does not need a terminating '\0'. */
if (content_type!=-1)
{
strpos += snprintf((char *)buffer, REST_MAX_CHUNK_SIZE+1, "CT %u\n", content_type);
}
/* Some getters such as for ETag or Location are omitted, as these options should not appear in a request.
* Max-Age might appear in HTTP requests or used for special purposes in CoAP. */
if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_max_age(request, &max_age_and_size))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "MA %lu\n", max_age_and_size);
}
/* For HTTP this is the Length option, for CoAP it is the Size option. */
if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_length(request, &max_age_and_size))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "SZ %lu\n", max_age_and_size);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_header_host(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "UH %.*s\n", len, str);
}
/* CoAP-specific example: actions not required for normal RESTful Web service. */
#if WITH_COAP > 1
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_observe(request, &observe))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Ob %lu\n", observe);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_token(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "To 0x");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_etag(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "ET 0x");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_uri_path(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "UP ");
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%.*s\n", len, str);
}
#if WITH_COAP == 3
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Lo %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Bl %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
#else
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_path(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "LP %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_query(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "LQ %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block2(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "B2 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
/*
* Critical Block1 option is currently rejected by engine.
*
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block1(request, &block_num, &block_more, &block_size, NULL))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "B1 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
*/
#endif /* CoAP > 03 */
#endif /* CoAP-specific example */
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_query(request, &query)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Qu %.*s\n", len, query);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_request_payload(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%.*s", len, bytes);
}
if (strpos >= REST_MAX_CHUNK_SIZE)
{
buffer[REST_MAX_CHUNK_SIZE-1] = 0xBB; /* '»' to indicate truncation */
}
REST.set_response_payload(response, buffer, strpos);
PRINTF("/mirror options received: %s\n", buffer);
/* Set dummy header options for response. Like getters, some setters are not implemented for HTTP and have no effect. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_max_age(response, 17); /* For HTTP, browsers will not re-request the page for 17 seconds. */
REST.set_header_etag(response, opaque, 2);
REST.set_header_location(response, location); /* Initial slash is omitted by framework */
REST.set_header_length(response, strpos); /* For HTTP, browsers will not re-request the page for 10 seconds. CoAP action depends on the client. */
/* CoAP-specific example: actions not required for normal RESTful Web service. */
#if WITH_COAP > 1
coap_set_header_uri_host(response, "tiki");
coap_set_header_observe(response, 10);
#if WITH_COAP == 3
coap_set_header_block(response, 42, 0, 64); /* The block option might be overwritten by the framework when blockwise transfer is requested. */
#else
coap_set_header_proxy_uri(response, "ftp://x");
coap_set_header_block2(response, 42, 0, 64); /* The block option might be overwritten by the framework when blockwise transfer is requested. */
coap_set_header_block1(response, 23, 0, 16);
coap_set_header_accept(response, TEXT_PLAIN);
coap_set_header_if_none_match(response);
#endif /* CoAP > 03 */
#endif /* CoAP-specific example */
}
#endif /* REST_RES_MIRROR */
/******************************************************************************/
#if REST_RES_CHUNKS
/*
* For data larger than REST_MAX_CHUNK_SIZE (e.g., stored in flash) resources must be aware of the buffer limitation
* and split their responses by themselves. To transfer the complete resource through a TCP stream or CoAP's blockwise transfer,
* the byte offset where to continue is provided to the handler as int32_t pointer.
* These chunk-wise resources must set the offset value to its new position or -1 of the end is reached.
* (The offset for CoAP's blockwise transfer can go up to 2'147'481'600 = ~2047 M for block size 2048 (reduced to 1024 in observe-03.)
*/
RESOURCE(chunks, METHOD_GET, "test/chunks", "title=\"Blockwise demo\";rt=\"Data\"");
#define CHUNKS_TOTAL 2050
void
chunks_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int32_t strpos = 0;
/* Check the offset for boundaries of the resource data. */
if (*offset>=CHUNKS_TOTAL)
{
REST.set_response_status(response, REST.status.BAD_OPTION);
/* A block error message should not exceed the minimum block size (16). */
const char *error_msg = "BlockOutOfScope";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
/* Generate data until reaching CHUNKS_TOTAL. */
while (strpos<preferred_size)
{
strpos += snprintf((char *)buffer+strpos, preferred_size-strpos+1, "|%ld|", *offset);
}
/* snprintf() does not adjust return value if truncated by size. */
if (strpos > preferred_size)
{
strpos = preferred_size;
}
/* Truncate if above CHUNKS_TOTAL bytes. */
if (*offset+(int32_t)strpos > CHUNKS_TOTAL)
{
strpos = CHUNKS_TOTAL - *offset;
}
REST.set_response_payload(response, buffer, strpos);
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
*offset += strpos;
/* Signal end of resource representation. */
if (*offset>=CHUNKS_TOTAL)
{
*offset = -1;
}
}
#endif
/******************************************************************************/
#if REST_RES_SEPARATE && defined (PLATFORM_HAS_BUTTON) && WITH_COAP > 3
/* Required to manually (=not by the engine) handle the response transaction. */
#if WITH_COAP == 7
#include "er-coap-07-separate.h"
#include "er-coap-07-transactions.h"
#elif WITH_COAP == 12
#include "er-coap-12-separate.h"
#include "er-coap-12-transactions.h"
#elif WITH_COAP == 13
#include "er-coap-13-separate.h"
#include "er-coap-13-transactions.h"
#endif
/*
* CoAP-specific example for separate responses.
* Note the call "rest_set_pre_handler(&resource_separate, coap_separate_handler);" in the main process.
* The pre-handler takes care of the empty ACK and updates the MID and message type for CON requests.
* The resource handler must store all information that required to finalize the response later.
*/
RESOURCE(separate, METHOD_GET, "test/separate", "title=\"Separate demo\"");
/* A structure to store the required information */
typedef struct application_separate_store {
/* Provided by Erbium to store generic request information such as remote address and token. */
coap_separate_t request_metadata;
/* Add fields for addition information to be stored for finalizing, e.g.: */
char buffer[16];
} application_separate_store_t;
static uint8_t separate_active = 0;
static application_separate_store_t separate_store[1];
void
separate_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/*
* Example allows only one open separate response.
* For multiple, the application must manage the list of stores.
*/
if (separate_active)
{
coap_separate_reject();
}
else
{
separate_active = 1;
/* Take over and skip response by engine. */
coap_separate_accept(request, &separate_store->request_metadata);
/* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */
/*
* At the moment, only the minimal information is stored in the store (client address, port, token, MID, type, and Block2).
* Extend the store, if the application requires additional information from this handler.
* buffer is an example field for custom information.
*/
snprintf(separate_store->buffer, sizeof(separate_store->buffer), "StoredInfo");
}
}
void
separate_finalize_handler()
{
if (separate_active)
{
coap_transaction_t *transaction = NULL;
if ( (transaction = coap_new_transaction(separate_store->request_metadata.mid, &separate_store->request_metadata.addr, separate_store->request_metadata.port)) )
{
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
/* Restore the request information for the response. */
coap_separate_resume(response, &separate_store->request_metadata, REST.status.OK);
coap_set_payload(response, separate_store->buffer, strlen(separate_store->buffer));
/*
* Be aware to respect the Block2 option, which is also stored in the coap_separate_t.
* As it is a critical option, this example resource pretends to handle it for compliance.
*/
coap_set_header_block2(response, separate_store->request_metadata.block2_num, 0, separate_store->request_metadata.block2_size);
/* Warning: No check for serialization error. */
transaction->packet_len = coap_serialize_message(response, transaction->packet);
coap_send_transaction(transaction);
/* The engine will clear the transaction (right after send for NON, after acked for CON). */
separate_active = 0;
}
else
{
/*
* Set timer for retry, send error message, ...
* The example simply waits for another button press.
*/
}
} /* if (separate_active) */
}
#endif
/******************************************************************************/
#if REST_RES_PUSHING
/*
* Example for a periodic resource.
* It takes an additional period parameter, which defines the interval to call [name]_periodic_handler().
* A default post_handler takes care of subscriptions by managing a list of subscribers to notify.
*/
PERIODIC_RESOURCE(pushing, METHOD_GET, "test/push", "title=\"Periodic demo\";obs", 5*CLOCK_SECOND);
void
pushing_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
/* Usually, a CoAP server would response with the resource representation matching the periodic_handler. */
const char *msg = "It's periodic!";
REST.set_response_payload(response, msg, strlen(msg));
/* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */
}
/*
* Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE.
* It will be called by the REST manager process with the defined period.
*/
void
pushing_periodic_handler(resource_t *r)
{
static uint16_t obs_counter = 0;
static char content[11];
++obs_counter;
PRINTF("TICK %u for /%s\n", obs_counter, r->url);
/* Build notification. */
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_NON, REST.status.OK, 0 );
coap_set_payload(notification, content, snprintf(content, sizeof(content), "TICK %u", obs_counter));
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(r, obs_counter, notification);
}
#endif
/******************************************************************************/
#if REST_RES_EVENT && defined (PLATFORM_HAS_BUTTON)
/*
* Example for an event resource.
* Additionally takes a period parameter that defines the interval to call [name]_periodic_handler().
* A default post_handler takes care of subscriptions and manages a list of subscribers to notify.
*/
EVENT_RESOURCE(event, METHOD_GET, "sensors/button", "title=\"Event demo\";obs");
void
event_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
/* Usually, a CoAP server would response with the current resource representation. */
const char *msg = "It's eventful!";
REST.set_response_payload(response, (uint8_t *)msg, strlen(msg));
/* A post_handler that handles subscriptions/observing will be called for periodic resources by the framework. */
}
/* Additionally, a handler function named [resource name]_event_handler must be implemented for each EVENT_RESOURCE defined.
* It will be called by the REST manager process with the defined period. */
void
event_event_handler(resource_t *r)
{
static uint16_t event_counter = 0;
static char content[12];
++event_counter;
PRINTF("TICK %u for /%s\n", event_counter, r->url);
/* Build notification. */
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_CON, REST.status.OK, 0 );
coap_set_payload(notification, content, snprintf(content, sizeof(content), "EVENT %u", event_counter));
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(r, event_counter, notification);
}
#endif /* PLATFORM_HAS_BUTTON */
/******************************************************************************/
#if REST_RES_SUB
/*
* Example for a resource that also handles all its sub-resources.
* Use REST.get_url() to multiplex the handling of the request depending on the Uri-Path.
*/
RESOURCE(sub, METHOD_GET | HAS_SUB_RESOURCES, "test/path", "title=\"Sub-resource demo\"");
void
sub_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
const char *uri_path = NULL;
int len = REST.get_url(request, &uri_path);
int base_len = strlen(resource_sub.url);
if (len==base_len)
{
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "Request any sub-resource of /%s", resource_sub.url);
}
else
{
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, ".%.*s", len-base_len, uri_path+base_len);
}
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
#endif
/******************************************************************************/
#if defined (PLATFORM_HAS_LEDS)
/******************************************************************************/
#if REST_RES_LEDS
/*A simple actuator example, depending on the color query parameter and post variable mode, corresponding led is activated or deactivated*/
RESOURCE(leds, METHOD_POST | METHOD_PUT , "actuators/leds", "title=\"LEDs: ?color=r|g|b, POST/PUT mode=on|off\";rt=\"Control\"");
void
leds_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t len = 0;
const char *color = NULL;
const char *mode = NULL;
uint8_t led = 0;
int success = 1;
if ((len=REST.get_query_variable(request, "color", &color))) {
PRINTF("color %.*s\n", len, color);
if (strncmp(color, "r", len)==0) {
led = LEDS_RED;
} else if(strncmp(color,"g", len)==0) {
led = LEDS_GREEN;
} else if (strncmp(color,"b", len)==0) {
led = LEDS_BLUE;
} else {
success = 0;
}
} else {
success = 0;
}
if (success && (len=REST.get_post_variable(request, "mode", &mode))) {
PRINTF("mode %s\n", mode);
if (strncmp(mode, "on", len)==0) {
leds_on(led);
} else if (strncmp(mode, "off", len)==0) {
leds_off(led);
} else {
success = 0;
}
} else {
success = 0;
}
if (!success) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
#endif
/******************************************************************************/
#if REST_RES_TOGGLE
/* A simple actuator example. Toggles the red led */
RESOURCE(toggle, METHOD_POST, "actuators/toggle", "title=\"Red LED\";rt=\"Control\"");
void
toggle_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
leds_toggle(LEDS_RED);
}
#endif
#endif /* PLATFORM_HAS_LEDS */
/******************************************************************************/
#if REST_RES_LIGHT && defined (PLATFORM_HAS_LIGHT)
/* A simple getter example. Returns the reading from light sensor with a simple etag */
RESOURCE(light, METHOD_GET, "sensors/light", "title=\"Photosynthetic and solar light (supports JSON)\";rt=\"LightSensor\"");
void
light_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint16_t light_photosynthetic = light_sensor.value(LIGHT_SENSOR_PHOTOSYNTHETIC);
uint16_t light_solar = light_sensor.value(LIGHT_SENSOR_TOTAL_SOLAR);
const uint16_t *accept = NULL;
int num = REST.get_header_accept(request, &accept);
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%u;%u", light_photosynthetic, light_solar);
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
}
else if (num && (accept[0]==REST.type.APPLICATION_XML))
{
REST.set_header_content_type(response, REST.type.APPLICATION_XML);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "<light photosynthetic=\"%u\" solar=\"%u\"/>", light_photosynthetic, light_solar);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
{
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'light':{'photosynthetic':%u,'solar':%u}}", light_photosynthetic, light_solar);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
else
{
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain, application/xml, and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
}
#endif /* PLATFORM_HAS_LIGHT */
/******************************************************************************/
#if REST_RES_BATTERY && defined (PLATFORM_HAS_BATTERY)
/* A simple getter example. Returns the reading from light sensor with a simple etag */
RESOURCE(battery, METHOD_GET, "sensors/battery", "title=\"Battery status\";rt=\"Battery\"");
void
battery_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int battery = battery_sensor.value(0);
const uint16_t *accept = NULL;
int num = REST.get_header_accept(request, &accept);
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", battery);
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
}
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
{
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'battery':%d}", battery);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
else
{
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
}
#endif /* PLATFORM_HAS_BATTERY */
#if defined (PLATFORM_HAS_RADIO) && REST_RES_RADIO
/* A simple getter example. Returns the reading of the rssi/lqi from radio sensor */
RESOURCE(radio, METHOD_GET, "sensor/radio", "title=\"RADIO: ?p=lqi|rssi\";rt=\"RadioSensor\"");
void
radio_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t len = 0;
const char *p = NULL;
uint8_t param = 0;
int success = 1;
const uint16_t *accept = NULL;
int num = REST.get_header_accept(request, &accept);
if ((len=REST.get_query_variable(request, "p", &p))) {
PRINTF("p %.*s\n", len, p);
if (strncmp(p, "lqi", len)==0) {
param = RADIO_SENSOR_LAST_VALUE;
} else if(strncmp(p,"rssi", len)==0) {
param = RADIO_SENSOR_LAST_PACKET;
} else {
success = 0;
}
} else {
success = 0;
}
if (success) {
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", radio_sensor.value(param));
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
}
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
{
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
if (param == RADIO_SENSOR_LAST_VALUE) {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'lqi':%d}", radio_sensor.value(param));
} else if (param == RADIO_SENSOR_LAST_PACKET) {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'rssi':%d}", radio_sensor.value(param));
}
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
else
{
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
} else {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
#endif
PROCESS(rest_server_example, "Erbium Example Server");
AUTOSTART_PROCESSES(&rest_server_example);
PROCESS_THREAD(rest_server_example, ev, data)
{ {
PROCESS_BEGIN(); PROCESS_BEGIN();
PROCESS_PAUSE();
PRINTF("Starting Erbium Example Server\n"); PRINTF("Starting Erbium Example Server\n");
#ifdef RF_CHANNEL #ifdef RF_CHANNEL
@ -809,70 +105,42 @@ PROCESS_THREAD(rest_server_example, ev, data)
/* Initialize the REST engine. */ /* Initialize the REST engine. */
rest_init_engine(); rest_init_engine();
/* Activate the application-specific resources. */ /*
#if REST_RES_HELLO * Bind the resources to their Uri-Path.
rest_activate_resource(&resource_helloworld); * WARNING: Activating twice only means alternate path, not two instances!
* All static variables are the same for each URI path.
*/
rest_activate_resource(&res_hello, "test/hello");
/* rest_activate_resource(&res_mirror, "debug/mirror"); */
/* rest_activate_resource(&res_chunks, "test/chunks"); */
/* rest_activate_resource(&res_separate, "test/separate"); */
rest_activate_resource(&res_push, "test/push");
/* rest_activate_resource(&res_event, "sensors/button"); */
/* rest_activate_resource(&res_sub, "test/sub"); */
/* rest_activate_resource(&res_b1_sep_b2, "test/b1sepb2"); */
#if PLATFORM_HAS_LEDS
/* rest_activate_resource(&res_leds, "actuators/leds"); */
rest_activate_resource(&res_toggle, "actuators/toggle");
#endif #endif
#if REST_RES_MIRROR #if PLATFORM_HAS_LIGHT
rest_activate_resource(&resource_mirror); /* rest_activate_resource(&res_light, "sensors/light"); */
#endif
#if REST_RES_CHUNKS
rest_activate_resource(&resource_chunks);
#endif
#if REST_RES_PUSHING
rest_activate_periodic_resource(&periodic_resource_pushing);
#endif
#if defined (PLATFORM_HAS_BUTTON) && REST_RES_EVENT
rest_activate_event_resource(&resource_event);
#endif
#if defined (PLATFORM_HAS_BUTTON) && REST_RES_SEPARATE && WITH_COAP > 3
/* No pre-handler anymore, user coap_separate_accept() and coap_separate_reject(). */
rest_activate_resource(&resource_separate);
#endif
#if defined (PLATFORM_HAS_BUTTON) && (REST_RES_EVENT || (REST_RES_SEPARATE && WITH_COAP > 3))
SENSORS_ACTIVATE(button_sensor);
#endif
#if REST_RES_SUB
rest_activate_resource(&resource_sub);
#endif
#if defined (PLATFORM_HAS_LEDS)
#if REST_RES_LEDS
rest_activate_resource(&resource_leds);
#endif
#if REST_RES_TOGGLE
rest_activate_resource(&resource_toggle);
#endif
#endif /* PLATFORM_HAS_LEDS */
#if defined (PLATFORM_HAS_LIGHT) && REST_RES_LIGHT
SENSORS_ACTIVATE(light_sensor);
rest_activate_resource(&resource_light);
#endif
#if defined (PLATFORM_HAS_BATTERY) && REST_RES_BATTERY
SENSORS_ACTIVATE(battery_sensor);
rest_activate_resource(&resource_battery);
#endif
#if defined (PLATFORM_HAS_RADIO) && REST_RES_RADIO
SENSORS_ACTIVATE(radio_sensor);
rest_activate_resource(&resource_radio);
#endif #endif
/* Define application-specific events here. */ /* Define application-specific events here. */
while(1) { while(1) {
PROCESS_WAIT_EVENT(); PROCESS_WAIT_EVENT();
#if defined (PLATFORM_HAS_BUTTON) #if PLATFORM_HAS_BUTTON
if (ev == sensors_event && data == &button_sensor) { if(ev == sensors_event && data == &button_sensor) {
PRINTF("BUTTON\n"); PRINTF("*******BUTTON*******\n");
#if REST_RES_EVENT
/* Call the event_handler for this application-specific event. */ /* Call the event_handler for this application-specific event. */
event_event_handler(&resource_event); res_event.trigger();
#endif
#if REST_RES_SEPARATE && WITH_COAP>3
/* Also call the separate response example handler. */ /* Also call the separate response example handler. */
separate_finalize_handler(); res_separate.resume();
#endif
} }
#endif /* PLATFORM_HAS_BUTTON */ #endif /* PLATFORM_HAS_BUTTON */
} /* while (1) */ } /* while (1) */
PROCESS_END(); PROCESS_END();
} }

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66
examples/er-rest-example/er-plugtest.h Normal file
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@ -0,0 +1,66 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Erbium (Er) CoAP client example
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#ifndef __ER_PLUGTEST_H__
#define __ER_PLUGTEST_H__
#if !defined(CONTIKI_TARGET_NATIVE)
#warning "Should only be compiled for native!"
#endif
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
/* double expansion */
#define TO_STRING2(x) # x
#define TO_STRING(x) TO_STRING2(x)
#define MAX_PLUGFEST_PAYLOAD 64 + 1 /* +1 for the terminating zero, which is not transmitted */
#define MAX_PLUGFEST_BODY 2048
#define CHUNKS_TOTAL 2012
#endif /* __ER_PLUGTEST_H__ */

82
examples/er-rest-example/project-conf.h
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2013, Matthias Kovatsch * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -26,63 +26,67 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* * This file is part of the Contiki operating system.
*/ */
#ifndef PROJECT_ERBIUM_CONF_H_ /**
#define PROJECT_ERBIUM_CONF_H_ * \file
* Erbium (Er) example project configuration.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
/* Some platforms have weird includes. */ #ifndef __PROJECT_ERBIUM_CONF_H__
#undef IEEE802154_CONF_PANID #define __PROJECT_ERBIUM_CONF_H__
/* Custom channel and PAN ID configuration for your project. */
/*
#undef RF_CHANNEL
#define RF_CHANNEL 26
#undef IEEE802154_CONF_PANID
#define IEEE802154_CONF_PANID 0xABCD
*/
/* IP buffer size must match all other hops, in particular the border router. */
/*
#undef UIP_CONF_BUFFER_SIZE
#define UIP_CONF_BUFFER_SIZE 256
*/
/* Disabling RDC for demo purposes. Core updates often require more memory. */ /* Disabling RDC for demo purposes. Core updates often require more memory. */
/* For projects, optimize memory and enable RDC again. */ /* For projects, optimize memory and enable RDC again. */
#undef NETSTACK_CONF_RDC #undef NETSTACK_CONF_RDC
#define NETSTACK_CONF_RDC nullrdc_driver #define NETSTACK_CONF_RDC nullrdc_driver
/* Disabling TCP on CoAP nodes. */
#undef UIP_CONF_TCP
#define UIP_CONF_TCP 0
/* Increase rpl-border-router IP-buffer when using more than 64. */ /* Increase rpl-border-router IP-buffer when using more than 64. */
#undef REST_MAX_CHUNK_SIZE #undef REST_MAX_CHUNK_SIZE
#define REST_MAX_CHUNK_SIZE 64 #define REST_MAX_CHUNK_SIZE 48
/* Estimate your header size, especially when using Proxy-Uri. */ /* Estimate your header size, especially when using Proxy-Uri. */
/* /*
#undef COAP_MAX_HEADER_SIZE #undef COAP_MAX_HEADER_SIZE
#define COAP_MAX_HEADER_SIZE 70 #define COAP_MAX_HEADER_SIZE 70
*/ */
/* The IP buffer size must fit all other hops, in particular the border router. */
/*
#undef UIP_CONF_BUFFER_SIZE
#define UIP_CONF_BUFFER_SIZE 1280
*/
/* Multiplies with chunk size, be aware of memory constraints. */ /* Multiplies with chunk size, be aware of memory constraints. */
#undef COAP_MAX_OPEN_TRANSACTIONS #undef COAP_MAX_OPEN_TRANSACTIONS
#define COAP_MAX_OPEN_TRANSACTIONS 4 #define COAP_MAX_OPEN_TRANSACTIONS 4
/* Must be <= open transaction number, default is COAP_MAX_OPEN_TRANSACTIONS-1. */ /* Must be <= open transactions, default is COAP_MAX_OPEN_TRANSACTIONS-1. */
/* /*
#undef COAP_MAX_OBSERVERS #undef COAP_MAX_OBSERVERS
#define COAP_MAX_OBSERVERS 2 #define COAP_MAX_OBSERVERS 2
*/ */
/* Filtering .well-known/core per query can be disabled to save space. */ /* Filtering .well-known/core per query can be disabled to save space. */
/*
#undef COAP_LINK_FORMAT_FILTERING #undef COAP_LINK_FORMAT_FILTERING
#define COAP_LINK_FORMAT_FILTERING 0 #define COAP_LINK_FORMAT_FILTERING 0
*/ #undef COAP_PROXY_OPTION_PROCESSING
#define COAP_PROXY_OPTION_PROCESSING 0
/* Save some memory for the sky platform. */ #endif /* __PROJECT_ERBIUM_CONF_H__ */
#undef NBR_TABLE_CONF_MAX_NEIGHBORS
#define NBR_TABLE_CONF_MAX_NEIGHBORS 10
#undef UIP_CONF_MAX_ROUTES
#define UIP_CONF_MAX_ROUTES 10
/* Reduce 802.15.4 frame queue to save RAM. */
#undef QUEUEBUF_CONF_NUM
#define QUEUEBUF_CONF_NUM 4
#undef SICSLOWPAN_CONF_FRAG
#define SICSLOWPAN_CONF_FRAG 1
#endif /* PROJECT_ERBIUM_CONF_H_ */

111
examples/er-rest-example/resources/res-b1-sep-b2.c Normal file
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@ -0,0 +1,111 @@
/*
* Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Lars Schmertmann <SmallLars@t-online.de>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap-block1.h"
#include "er-coap-separate.h"
#include "er-coap-transactions.h"
static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
SEPARATE_RESOURCE(res_b1_sep_b2, "title=\"Block1 + Separate + Block2 demo\"", NULL, res_post_handler, NULL, NULL, NULL);
#define MAX_DATA_LEN 256
static uint8_t big_msg[MAX_DATA_LEN];
static size_t big_msg_len = 0;
static coap_separate_t request_metadata;
static void
res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* Example allows only one request on time. There are no checks for multiply access !!! */
if(*offset == 0) {
/* Incoming Data */
if(coap_block1_handler(request, response, big_msg, &big_msg_len, MAX_DATA_LEN)) {
/* More Blocks will follow. Example waits for
* the last block and stores data into big_msg.
*/
return;
}
/* Last block was received. */
coap_separate_accept(request, &request_metadata);
/* Need Time for calculation now */
uint32_t i;
for(i = 0; i <= 4096; i++) {
printf("\r% 4u\r", i);
}
printf("\n");
/* Send first block */
coap_transaction_t *transaction = NULL;
if((transaction = coap_new_transaction(request_metadata.mid, &request_metadata.addr, request_metadata.port))) {
coap_packet_t resp[1]; /* This way the packet can be treated as pointer as usual. */
/* Restore the request information for the response. */
coap_separate_resume(resp, &request_metadata, CONTENT_2_05);
/* Set payload and block info */
coap_set_payload(resp, big_msg, big_msg_len > request_metadata.block2_size ? request_metadata.block2_size : big_msg_len);
if(big_msg_len > request_metadata.block2_size) {
coap_set_header_block2(resp, 0, 1, request_metadata.block2_size);
}
/* Warning: No check for serialization error. */
transaction->packet_len = coap_serialize_message(resp, transaction->packet);
coap_send_transaction(transaction);
}
} else {
/* request for more blocks */
if(*offset >= big_msg_len) {
coap_set_status_code(response, BAD_OPTION_4_02);
coap_set_payload(response, "BlockOutOfScope", 15);
return;
}
memcpy(buffer, big_msg + *offset, 32);
if(big_msg_len - *offset < preferred_size) {
preferred_size = big_msg_len - *offset;
*offset = -1;
} else {
*offset += preferred_size;
}
coap_set_payload(response, buffer, preferred_size);
}
}

81
examples/er-rest-example/resources/res-battery.c Normal file
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@ -0,0 +1,81 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#if PLATFORM_HAS_BATTERY
#include <string.h>
#include "rest-engine.h"
#include "dev/battery-sensor.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/* A simple getter example. Returns the reading from light sensor with a simple etag */
RESOURCE(battery,
"title=\"Battery status\";rt=\"Battery\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int battery = battery_sensor.value(0);
unsigned int accept = -1;
REST.get_header_accept(request, &accept);
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", battery);
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_JSON) {
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'battery':%d}", battery);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else {
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
}
#endif /* PLATFORM_HAS_BATTERY */

97
examples/er-rest-example/resources/res-chunks.c Normal file
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@ -0,0 +1,97 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/*
* For data larger than REST_MAX_CHUNK_SIZE (e.g., when stored in flash) resources must be aware of the buffer limitation
* and split their responses by themselves. To transfer the complete resource through a TCP stream or CoAP's blockwise transfer,
* the byte offset where to continue is provided to the handler as int32_t pointer.
* These chunk-wise resources must set the offset value to its new position or -1 of the end is reached.
* (The offset for CoAP's blockwise transfer can go up to 2'147'481'600 = ~2047 M for block size 2048 (reduced to 1024 in observe-03.)
*/
RESOURCE(res_chunks,
"title=\"Blockwise demo\";rt=\"Data\"",
res_get_handler,
NULL,
NULL,
NULL);
#define CHUNKS_TOTAL 2050
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int32_t strpos = 0;
/* Check the offset for boundaries of the resource data. */
if(*offset >= CHUNKS_TOTAL) {
REST.set_response_status(response, REST.status.BAD_OPTION);
/* A block error message should not exceed the minimum block size (16). */
const char *error_msg = "BlockOutOfScope";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
/* Generate data until reaching CHUNKS_TOTAL. */
while(strpos < preferred_size) {
strpos += snprintf((char *)buffer + strpos, preferred_size - strpos + 1, "|%ld|", *offset);
}
/* snprintf() does not adjust return value if truncated by size. */
if(strpos > preferred_size) {
strpos = preferred_size;
/* Truncate if above CHUNKS_TOTAL bytes. */
}
if(*offset + (int32_t)strpos > CHUNKS_TOTAL) {
strpos = CHUNKS_TOTAL - *offset;
}
REST.set_response_payload(response, buffer, strpos);
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
*offset += strpos;
/* Signal end of resource representation. */
if(*offset >= CHUNKS_TOTAL) {
*offset = -1;
}
}

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examples/er-rest-example/resources/res-event.c Normal file
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@ -0,0 +1,101 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_event_handler();
/*
* Example for an event resource.
* Additionally takes a period parameter that defines the interval to call [name]_periodic_handler().
* A default post_handler takes care of subscriptions and manages a list of subscribers to notify.
*/
EVENT_RESOURCE(res_event,
"title=\"Event demo\";obs",
res_get_handler,
NULL,
NULL,
NULL,
res_event_handler);
/*
* Use local resource state that is accessed by res_get_handler() and altered by res_event_handler() or PUT or POST.
*/
static int32_t event_counter = 0;
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, preferred_size, "EVENT %lu", event_counter));
/* A post_handler that handles subscriptions/observing will be called for periodic resources by the framework. */
}
/*
* Additionally, res_event_handler must be implemented for each EVENT_RESOURCE.
* It is called through <res_name>.trigger(), usually from the server process.
*/
static void
res_event_handler()
{
/* Do the update triggered by the event here, e.g., sampling a sensor. */
++event_counter;
/* Usually a condition is defined under with subscribers are notified, e.g., event was above a threshold. */
if(1) {
PRINTF("TICK %u for /%s\n", event_counter, res_event.url);
/* Notify the registered observers which will trigger the res_get_handler to create the response. */
REST.notify_subscribers(&res_event);
}
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdlib.h>
#include <string.h>
#include "rest-engine.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/*
* A handler function named [resource name]_handler must be implemented for each RESOURCE.
* A buffer for the response payload is provided through the buffer pointer. Simple resources can ignore
* preferred_size and offset, but must respect the REST_MAX_CHUNK_SIZE limit for the buffer.
* If a smaller block size is requested for CoAP, the REST framework automatically splits the data.
*/
RESOURCE(res_hello,
"title=\"Hello world: ?len=0..\";rt=\"Text\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
const char *len = NULL;
/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */
char const *const message = "Hello World! ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxy";
int length = 12; /* |<-------->| */
/* The query string can be retrieved by rest_get_query() or parsed for its key-value pairs. */
if(REST.get_query_variable(request, "len", &len)) {
length = atoi(len);
if(length < 0) {
length = 0;
}
if(length > REST_MAX_CHUNK_SIZE) {
length = REST_MAX_CHUNK_SIZE;
}
memcpy(buffer, message, length);
} else {
memcpy(buffer, message, length);
} REST.set_header_content_type(response, REST.type.TEXT_PLAIN); /* text/plain is the default, hence this option could be omitted. */
REST.set_header_etag(response, (uint8_t *)&length, 1);
REST.set_response_payload(response, buffer, length);
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#if PLATFORM_HAS_LEDS
#include <string.h>
#include "rest-engine.h"
#include "dev/leds.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
static void res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/*A simple actuator example, depending on the color query parameter and post variable mode, corresponding led is activated or deactivated*/
RESOURCE(res_leds,
"title=\"LEDs: ?color=r|g|b, POST/PUT mode=on|off\";rt=\"Control\"",
NULL,
res_post_put_handler,
res_post_put_handler,
NULL);
static void
res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t len = 0;
const char *color = NULL;
const char *mode = NULL;
uint8_t led = 0;
int success = 1;
if((len = REST.get_query_variable(request, "color", &color))) {
PRINTF("color %.*s\n", len, color);
if(strncmp(color, "r", len) == 0) {
led = LEDS_RED;
} else if(strncmp(color, "g", len) == 0) {
led = LEDS_GREEN;
} else if(strncmp(color, "b", len) == 0) {
led = LEDS_BLUE;
} else {
success = 0;
}
} else {
success = 0;
} if(success && (len = REST.get_post_variable(request, "mode", &mode))) {
PRINTF("mode %s\n", mode);
if(strncmp(mode, "on", len) == 0) {
leds_on(led);
} else if(strncmp(mode, "off", len) == 0) {
leds_off(led);
} else {
success = 0;
}
} else {
success = 0;
} if(!success) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
#endif /* PLATFORM_HAS_LEDS */

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#if PLATFORM_HAS_LIGHT
#include <string.h>
#include "rest-engine.h"
#include "dev/light-sensor.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/* A simple getter example. Returns the reading from light sensor with a simple etag */
RESOURCE(res_light,
"title=\"Photosynthetic and solar light (supports JSON)\";rt=\"LightSensor\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint16_t light_photosynthetic = light_sensor.value(LIGHT_SENSOR_PHOTOSYNTHETIC);
uint16_t light_solar = light_sensor.value(LIGHT_SENSOR_TOTAL_SOLAR);
unsigned int accept = -1;
REST.get_header_accept(request, &accept);
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%u;%u", light_photosynthetic, light_solar);
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_XML) {
REST.set_header_content_type(response, REST.type.APPLICATION_XML);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "<light photosynthetic=\"%u\" solar=\"%u\"/>", light_photosynthetic, light_solar);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_JSON) {
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'light':{'photosynthetic':%u,'solar':%u}}", light_photosynthetic, light_solar);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else {
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain, application/xml, and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
}
#endif /* PLATFORM_HAS_LIGHT */

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
static void res_any_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/* This resource mirrors the incoming request. It shows how to access the options and how to set them for the response. */
RESOURCE(res_mirror,
"title=\"Returns your decoded message\";rt=\"Debug\"",
res_any_handler,
res_any_handler,
res_any_handler,
res_any_handler);
static void
res_any_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* The ETag and Token is copied to the header. */
uint8_t opaque[] = { 0x0A, 0xBC, 0xDE };
/* Strings are not copied, so use static string buffers or strings in .text memory (char *str = "string in .text";). */
static char location[] = { '/', 'f', '/', 'a', '?', 'k', '&', 'e', 0 };
/* No default my be assumed for the Content-Format. (Unsigned -1 means all bits set.) */
unsigned int content_format = -1;
/* The other getters copy the value (or string/array pointer) to the given pointers and return 1 for success or the length of strings/arrays. */
uint32_t longint = 0;
const char *str = NULL;
const uint8_t *bytes = NULL;
uint32_t block_num = 0;
uint8_t block_more = 0;
uint16_t block_size = 0;
int len = 0;
/* Mirror the received header options in the response payload. Unsupported getters (e.g., rest_get_header_observe() with HTTP) will return 0. */
int strpos = 0;
/* snprintf() counts the terminating '\0' to the size parameter.
* The additional byte is taken care of by allocating REST_MAX_CHUNK_SIZE+1 bytes in the REST framework.
* Add +1 to fill the complete buffer, as the payload does not need a terminating '\0'. */
if(REST.get_header_content_type(request, &content_format)) {
strpos += snprintf((char *)buffer, REST_MAX_CHUNK_SIZE + 1, "CF %u\n", content_format);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = REST.get_header_accept(request, &content_format))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "Ac %u\n", content_format);
/* Some getters such as for ETag or Location are omitted, as these options should not appear in a request.
* Max-Age might appear in HTTP requests or used for special purposes in CoAP. */
}
if(strpos <= REST_MAX_CHUNK_SIZE && REST.get_header_max_age(request, &longint)) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "MA %lu\n", longint);
/* For HTTP this is the Length option, for CoAP it is the Size option. */
}
if(strpos <= REST_MAX_CHUNK_SIZE && REST.get_header_length(request, &longint)) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "SZ %lu\n", longint);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = REST.get_header_host(request, &str))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "UH %.*s\n", len, str);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = REST.get_url(request, &str))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "UP %.*s\n", len, str);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = REST.get_query(request, &str))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "UQ %.*s\n", len, str);
/* Undefined request options for debugging: actions not required for normal RESTful Web service. */
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_path(request, &str))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "LP %.*s\n", len, str);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_query(request, &str))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "LQ %.*s\n", len, str);
/* CoAP-specific example: actions not required for normal RESTful Web service. */
}
coap_packet_t *const coap_pkt = (coap_packet_t *)request;
if(strpos <= REST_MAX_CHUNK_SIZE && coap_pkt->token_len > 0) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "To 0x");
int index = 0;
for(index = 0; index < coap_pkt->token_len; ++index) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "%02X", coap_pkt->token[index]);
}
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "\n");
}
if(strpos <= REST_MAX_CHUNK_SIZE && IS_OPTION(coap_pkt, COAP_OPTION_OBSERVE)) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "Ob %lu\n", coap_pkt->observe);
}
if(strpos <= REST_MAX_CHUNK_SIZE && IS_OPTION(coap_pkt, COAP_OPTION_ETAG)) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "ET 0x");
int index = 0;
for(index = 0; index < coap_pkt->etag_len; ++index) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "%02X", coap_pkt->etag[index]);
}
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "\n");
}
if(strpos <= REST_MAX_CHUNK_SIZE && coap_get_header_block2(request, &block_num, &block_more, &block_size, NULL)) { /* This getter allows NULL pointers to get only a subset of the block parameters. */
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "B2 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
if(strpos <= REST_MAX_CHUNK_SIZE && coap_get_header_block1(request, &block_num, &block_more, &block_size, NULL)) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "B1 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
if(strpos <= REST_MAX_CHUNK_SIZE && (len = REST.get_request_payload(request, &bytes))) {
strpos += snprintf((char *)buffer + strpos, REST_MAX_CHUNK_SIZE - strpos + 1, "%.*s", len, bytes);
}
if(strpos >= REST_MAX_CHUNK_SIZE) {
buffer[REST_MAX_CHUNK_SIZE - 1] = 0xBB; /* '»' to indicate truncation */
}
REST.set_response_payload(response, buffer, strpos);
PRINTF("/mirror options received: %s\n", buffer);
/* Set dummy header options for response. Like getters, some setters are not implemented for HTTP and have no effect. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_max_age(response, 17); /* For HTTP, browsers will not re-request the page for 17 seconds. */
REST.set_header_etag(response, opaque, 2);
REST.set_header_location(response, location); /* Initial slash is omitted by framework */
REST.set_header_length(response, strpos); /* For HTTP, browsers will not re-request the page for 10 seconds. CoAP action depends on the client. */
/* CoAP-specific example: actions not required for normal RESTful Web service. */
coap_set_header_uri_host(response, "tiki");
coap_set_header_observe(response, 10);
coap_set_header_proxy_uri(response, "ftp://x");
coap_set_header_block2(response, 42, 0, 64); /* The block option might be overwritten by the framework when blockwise transfer is requested. */
coap_set_header_block1(response, 23, 0, 16);
coap_set_header_accept(response, TEXT_PLAIN);
coap_set_header_if_none_match(response);
}

72
apps/er-coap-03/er-coap-03-transactions.h → examples/er-rest-example/resources/res-plugtest-create1.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,48 +31,50 @@
/** /**
* \file * \file
* CoAP module for reliable transport * ETSI Plugtest resource
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_TRANSACTIONS_H_ #include <string.h>
#define COAP_TRANSACTIONS_H_ #include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
#include "er-coap-03.h" static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/* RESOURCE(res_plugtest_create1,
* The number of concurrent messages that can be stored for retransmission in the transaction layer. "title=\"Creates on PUT\"",
*/ NULL,
#ifndef COAP_MAX_OPEN_TRANSACTIONS NULL,
#define COAP_MAX_OPEN_TRANSACTIONS 4 res_put_handler,
#endif /* COAP_MAX_OPEN_TRANSACTIONS */ res_delete_handler);
/* container for transactions with message buffer and retransmission info */ static uint8_t create1_exists = 0;
typedef struct coap_transaction {
struct coap_transaction *next; /* for LIST */
uint16_t tid; static void
struct etimer retrans_timer; res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
uint8_t retrans_counter; {
PRINTF("/create1 PUT");
uip_ipaddr_t addr; if(coap_get_header_if_none_match(request)) {
uint16_t port; if(!create1_exists) {
REST.set_response_status(response, REST.status.CREATED);
restful_response_handler callback; create1_exists = 1;
void *callback_data; } else {
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
} else {
REST.set_response_status(response, REST.status.CHANGED);
}
}
static void
res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
PRINTF("/create1 DELETE ");
REST.set_response_status(response, REST.status.DELETED);
uint16_t packet_len; create1_exists = 0;
uint8_t packet[COAP_MAX_PACKET_SIZE+1]; /* +1 for the terminating '\0' to simply and savely use snprintf(buf, len+1, "", ...) in the resource handler. */ }
} coap_transaction_t;
void coap_register_as_transaction_handler();
coap_transaction_t *coap_new_transaction(uint16_t tid, uip_ipaddr_t *addr, uint16_t port);
void coap_send_transaction(coap_transaction_t *t);
void coap_clear_transaction(coap_transaction_t *t);
coap_transaction_t *coap_get_transaction_by_tid(uint16_t tid);
void coap_check_transactions();
#endif /* COAP_TRANSACTIONS_H_ */

46
apps/er-coap-07/er-coap-07-separate.h → examples/er-rest-example/resources/res-plugtest-create2.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,36 +31,30 @@
/** /**
* \file * \file
* CoAP module for separate responses * ETSI Plugtest resource
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_SEPARATE_H_ #include <string.h>
#define COAP_SEPARATE_H_ #include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
#include "er-coap-07.h" static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
typedef struct coap_separate { RESOURCE(res_plugtest_create2,
"title=\"Creates on POST\"",
NULL,
res_post_handler,
NULL,
NULL);
uip_ipaddr_t addr; static void
uint16_t port; res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
PRINTF("/create2 ");
coap_message_type_t type; REST.set_response_status(response, REST.status.CREATED);
uint16_t mid; REST.set_header_location(response, "/location1/location2/location3");
}
uint8_t token_len;
uint8_t token[COAP_TOKEN_LEN];
/* separate + blockwise is untested! */
uint32_t block2_num;
uint16_t block2_size;
} coap_separate_t;
int coap_separate_handler(resource_t *resource, void *request, void *response);
void coap_separate_reject();
int coap_separate_accept(void *request, coap_separate_t *separate_store);
void coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code);
#endif /* COAP_SEPARATE_H_ */

80
examples/er-rest-example/resources/res-plugtest-create3.c Normal file
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@ -0,0 +1,80 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_create3,
"title=\"Default test resource\"",
NULL,
NULL,
res_put_handler,
res_delete_handler);
static uint8_t create3_exists = 0;
static void
res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
PRINTF("/create3 PUT ");
if(coap_get_header_if_none_match(request)) {
if(!create3_exists) {
REST.set_response_status(response, REST.status.CREATED);
create3_exists = 1;
} else {
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
} else {
REST.set_response_status(response, REST.status.CHANGED);
}
}
static void
res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
PRINTF("/create3 DELETE ");
REST.set_response_status(response, REST.status.DELETED);
create3_exists = 0;
}

91
examples/er-rest-example/resources/res-plugtest-large-create.c Normal file
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@ -0,0 +1,91 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/*
* Large resource that can be created using POST method
*/
RESOURCE(res_plugtest_large_create,
"title=\"Large resource that can be created using POST method\";rt=\"block\"",
NULL,
res_post_handler,
NULL,
NULL);
static void
res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
uint8_t *incoming = NULL;
size_t len = 0;
unsigned int ct = -1;
if(!REST.get_header_content_type(request, &ct)) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
const char *error_msg = "NoContentType";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
if((len = REST.get_request_payload(request, (const uint8_t **)&incoming))) {
if(coap_req->block1_num * coap_req->block1_size + len <= 2048) {
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "/nirvana");
coap_set_header_block1(response, coap_req->block1_num, 0,
coap_req->block1_size);
} else {
REST.set_response_status(response, REST.status.REQUEST_ENTITY_TOO_LARGE);
const char *error_msg = "2048B max.";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
} else {
REST.set_response_status(response, REST.status.BAD_REQUEST);
const char *error_msg = "NoPayload";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
}

127
examples/er-rest-example/resources/res-plugtest-large-update.c Normal file
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@ -0,0 +1,127 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(
res_plugtest_large_update,
"title=\"Large resource that can be updated using PUT method\";rt=\"block\";sz=\"" TO_STRING(MAX_PLUGFEST_BODY) "\"",
res_get_handler,
NULL,
res_put_handler,
NULL);
static int32_t large_update_size = 0;
static uint8_t large_update_store[MAX_PLUGFEST_BODY] = { 0 };
static unsigned int large_update_ct = APPLICATION_OCTET_STREAM;
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* Check the offset for boundaries of the resource data. */
if(*offset >= large_update_size) {
REST.set_response_status(response, REST.status.BAD_OPTION);
/* A block error message should not exceed the minimum block size (16). */
const char *error_msg = "BlockOutOfScope";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
REST.set_response_payload(response, large_update_store + *offset,
MIN(large_update_size - *offset, preferred_size));
REST.set_header_content_type(response, large_update_ct);
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
*offset += preferred_size;
/* Signal end of resource representation. */
if(*offset >= large_update_size) {
*offset = -1;
}
}
static void
res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
uint8_t *incoming = NULL;
size_t len = 0;
unsigned int ct = -1;
if(!REST.get_header_content_type(request, &ct)) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
const char *error_msg = "NoContentType";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
if((len = REST.get_request_payload(request, (const uint8_t **)&incoming))) {
if(coap_req->block1_num * coap_req->block1_size + len <= sizeof(large_update_store)) {
memcpy(
large_update_store + coap_req->block1_num * coap_req->block1_size,
incoming, len);
large_update_size = coap_req->block1_num * coap_req->block1_size + len;
large_update_ct = ct;
REST.set_response_status(response, REST.status.CHANGED);
coap_set_header_block1(response, coap_req->block1_num, 0,
coap_req->block1_size);
} else {
REST.set_response_status(response,
REST.status.REQUEST_ENTITY_TOO_LARGE);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "%uB max.",
sizeof(large_update_store)));
return;
}
} else {
REST.set_response_status(response, REST.status.BAD_REQUEST);
const char *error_msg = "NoPayload";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
}

92
examples/er-rest-example/resources/res-plugtest-large.c Normal file
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@ -0,0 +1,92 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_large,
"title=\"Large resource\";rt=\"block\";sz=\"" TO_STRING(CHUNKS_TOTAL) "\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int32_t strpos = 0;
/* Check the offset for boundaries of the resource data. */
if(*offset >= CHUNKS_TOTAL) {
REST.set_response_status(response, REST.status.BAD_OPTION);
/* A block error message should not exceed the minimum block size (16). */
const char *error_msg = "BlockOutOfScope";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
/* Generate data until reaching CHUNKS_TOTAL. */
while(strpos < preferred_size) {
strpos += snprintf((char *)buffer + strpos, preferred_size - strpos + 1,
"|%ld|", *offset);
}
/* snprintf() does not adjust return value if truncated by size. */
if(strpos > preferred_size) {
strpos = preferred_size;
/* Truncate if above CHUNKS_TOTAL bytes. */
}
if(*offset + (int32_t)strpos > CHUNKS_TOTAL) {
strpos = CHUNKS_TOTAL - *offset;
}
REST.set_response_payload(response, buffer, strpos);
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
*offset += strpos;
/* Signal end of resource representation. */
if(*offset >= CHUNKS_TOTAL) {
*offset = -1;
}
}

71
examples/er-rest-example/resources/res-plugtest-links.c Normal file
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@ -0,0 +1,71 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_link1,
"rt=\"Type1 Type2\";if=\"If1\"",
res_get_handler,
NULL,
NULL,
NULL);
RESOURCE(res_plugtest_link2,
"rt=\"Type2 Type3\";if=\"If2\"",
res_get_handler,
NULL,
NULL,
NULL);
RESOURCE(res_plugtest_link3,
"rt=\"Type1 Type3\";if=\"foo\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
const char *msg = "Dummy link";
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, msg, strlen(msg));
}

63
examples/er-rest-example/resources/res-plugtest-locquery.c Normal file
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@ -0,0 +1,63 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_locquery,
"title=\"Resource accepting query parameters\"",
NULL,
res_post_handler,
NULL,
NULL);
static void
res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF(
"/location-query POST (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "?first=1&second=2");
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_longpath,
"title=\"Long path resource\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/seg1/seg2/seg3 GET ");
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid));
PRINTF("(%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_multi,
"title=\"Resource providing text/plain and application/xml\";ct=\"0 41\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
unsigned int accept = -1;
REST.get_header_accept(request, &accept);
PRINTF("/multi-format GET (%s %u) ", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"Type: %u\nCode: %u\nMID: %u%s", coap_req->type, coap_req->code,
coap_req->mid, accept != -1 ? "\nAccept: 0" : ""));
PRINTF("PLAIN\n");
} else if(accept == REST.type.APPLICATION_XML) {
REST.set_header_content_type(response, REST.type.APPLICATION_XML);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"<status type=\"%u\" code=\"%u\" mid=\"%u\" accept=\"%u\"/>",
coap_req->type, coap_req->code, coap_req->mid, accept));
PRINTF("XML\n");
} else {
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/xml";
REST.set_response_payload(response, msg, strlen(msg));
PRINTF("ERROR\n");
}
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-coap-observe.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_periodic_handler(void);
PERIODIC_RESOURCE(res_plugtest_obs,
"title=\"Observable resource which changes every 5 seconds\";obs",
res_get_handler,
NULL,
res_put_handler,
res_delete_handler,
5 * CLOCK_SECOND,
res_periodic_handler);
static int32_t obs_counter = 0;
static char obs_content[MAX_PLUGFEST_BODY];
static size_t obs_content_len = 0;
static unsigned int obs_format = 0;
static char obs_status = 0;
static void
obs_purge_list()
{
PRINTF("### SERVER ACTION ### Purging obs list");
coap_remove_observer_by_uri(NULL, 0, res_plugtest_obs.url);
}
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* Keep server log clean from ticking events */
if(request != NULL) {
PRINTF("/obs GET\n");
}
REST.set_header_content_type(response, obs_format);
REST.set_header_max_age(response, 5);
if(obs_content_len) {
REST.set_header_content_type(response, obs_format);
REST.set_response_payload(response, obs_content, obs_content_len);
} else {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, obs_content,
snprintf(obs_content, MAX_PLUGFEST_PAYLOAD, "TICK %lu", obs_counter));
}
/* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */
}
static void
res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint8_t *incoming = NULL;
unsigned int ct = -1;
REST.get_header_content_type(request, &ct);
PRINTF("/obs PUT\n");
if(ct != obs_format) {
obs_status = 1;
obs_format = ct;
} else {
obs_content_len = REST.get_request_payload(request,
(const uint8_t **)&incoming);
memcpy(obs_content, incoming, obs_content_len);
res_periodic_handler();
}
REST.set_response_status(response, REST.status.CHANGED);
}
static void
res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
PRINTF("/obs DELETE\n");
obs_status = 2;
REST.set_response_status(response, REST.status.DELETED);
}
/*
* Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE.
* It will be called by the REST manager process with the defined period.
*/
static void
res_periodic_handler()
{
++obs_counter;
/* PRINTF("TICK %u for /%s\n", obs_counter, r->url); */
if(obs_status == 1) {
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(&res_plugtest_obs);
PRINTF("######### sending 5.00\n");
obs_purge_list();
} else if(obs_status == 2) {
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(&res_plugtest_obs);
obs_purge_list();
obs_counter = 0;
obs_content_len = 0;
} else {
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(&res_plugtest_obs);
} obs_status = 0;
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
PARENT_RESOURCE(res_plugtest_path,
"title=\"Path test resource\";ct=\"40\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset)
{
const char *uri_path = NULL;
int len = REST.get_url(request, &uri_path);
int base_len = strlen(res_plugtest_path.url);
if(len == base_len) {
REST.set_header_content_type(response, REST.type.APPLICATION_LINK_FORMAT);
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"</path/sub1>,</path/sub2>,</path/sub3>");
} else {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "/%.*s", len, uri_path);
}
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_query,
"title=\"Resource accepting query parameters\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
int len = 0;
const char *query = NULL;
PRINTF(
"/query GET (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if((len = REST.get_query(request, &query))) {
PRINTF("Query: %.*s\n", len, query);
/* Code 2.05 CONTENT is default. */
}
REST.set_header_content_type(response,
REST.type.TEXT_PLAIN);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"Type: %u\nCode: %u\nMID: %u\nQuery: %.*s", coap_req->type,
coap_req->code, coap_req->mid, len, query));
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-coap-transactions.h"
#include "er-coap-separate.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_resume_handler(void);
PERIODIC_RESOURCE(res_plugtest_separate,
"title=\"Resource which cannot be served immediately and which cannot be acknowledged in a piggy-backed way\"",
res_get_handler,
NULL,
NULL,
NULL,
3 * CLOCK_SECOND,
res_resume_handler);
/* A structure to store the required information */
typedef struct application_separate_store {
/* Provided by Erbium to store generic request information such as remote address and token. */
coap_separate_t request_metadata;
/* Add fields for addition information to be stored for finalizing, e.g.: */
char buffer[MAX_PLUGFEST_PAYLOAD];
} application_separate_store_t;
static uint8_t separate_active = 0;
static application_separate_store_t separate_store[1];
void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/separate ");
if(separate_active) {
PRINTF("REJECTED ");
coap_separate_reject();
} else {
PRINTF("STORED ");
separate_active = 1;
/* Take over and skip response by engine. */
coap_separate_accept(request, &separate_store->request_metadata);
/* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */
snprintf(separate_store->buffer, MAX_PLUGFEST_PAYLOAD,
"Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code,
coap_req->mid);
}
PRINTF("(%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
}
static void
res_resume_handler()
{
if(separate_active) {
PRINTF("/separate ");
coap_transaction_t *transaction = NULL;
if((transaction = coap_new_transaction(separate_store->request_metadata.mid,
&separate_store->request_metadata.addr,
separate_store->request_metadata.port))) {
PRINTF(
"RESPONSE (%s %u)\n", separate_store->request_metadata.type == COAP_TYPE_CON ? "CON" : "NON", separate_store->request_metadata.mid);
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
/* Restore the request information for the response. */
coap_separate_resume(response, &separate_store->request_metadata, CONTENT_2_05);
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
coap_set_payload(response, separate_store->buffer,
strlen(separate_store->buffer));
/*
* Be aware to respect the Block2 option, which is also stored in the coap_separate_t.
* As it is a critical option, this example resource pretends to handle it for compliance.
*/
coap_set_header_block2(response,
separate_store->request_metadata.block2_num, 0,
separate_store->request_metadata.block2_size);
/* Warning: No check for serialization error. */
transaction->packet_len = coap_serialize_message(response,
transaction->packet);
coap_send_transaction(transaction);
/* The engine will clear the transaction (right after send for NON, after acked for CON). */
separate_active = 0;
} else {
PRINTF("ERROR (transaction)\n");
}
} /* if (separate_active) */
}

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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_test, "title=\"Default test resource\"", res_get_handler, res_post_handler, res_put_handler, res_delete_handler);
static uint8_t test_etag[8] = { 0 };
static uint8_t test_etag_len = 1;
static uint8_t test_change = 1;
static uint8_t test_none_match_okay = 1;
static const uint8_t *bytes = NULL;
static size_t len = 0;
static void
test_update_etag()
{
int i;
test_etag_len = (random_rand() % 8) + 1;
for(i = 0; i < test_etag_len; ++i) {
test_etag[i] = random_rand();
}
test_change = 0;
PRINTF("### SERVER ACTION ### Changed ETag %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", test_etag_len, test_etag[0], test_etag[1], test_etag[2], test_etag[3], test_etag[4], test_etag[5], test_etag[6], test_etag[7]);
}
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
if(test_change) {
test_update_etag();
}
PRINTF("/test GET (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if((len = coap_get_header_etag(request, &bytes)) > 0
&& len == test_etag_len
&& memcmp(test_etag, bytes, len) == 0) {
PRINTF("validate ");
REST.set_response_status(response, REST.status.NOT_MODIFIED);
REST.set_header_etag(response, test_etag, test_etag_len);
test_change = 1;
PRINTF("### SERVER ACTION ### Resource will change\n");
} else {
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_etag(response, test_etag, test_etag_len);
REST.set_header_max_age(response, 30);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid));
}
}
static void
res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/test POST (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "/location1/location2/location3");
}
static void
res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/test PUT (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if(coap_get_header_if_none_match(request)) {
if(test_none_match_okay) {
REST.set_response_status(response, REST.status.CREATED);
test_none_match_okay = 0;
PRINTF("### SERVER ACTION ### If-None-Match will FAIL\n");
} else {
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
test_none_match_okay = 1;
PRINTF("### SERVER ACTION ### If-None-Match will SUCCEED\n");
}
} else if(((len = coap_get_header_if_match(request, &bytes)) > 0
&& (len == test_etag_len
&& memcmp(test_etag, bytes, len) == 0))
|| len == 0) {
test_update_etag();
REST.set_header_etag(response, test_etag, test_etag_len);
REST.set_response_status(response, REST.status.CHANGED);
if(len > 0) {
test_change = 1;
PRINTF("### SERVER ACTION ### Resource will change\n");
}
} else {
PRINTF("Check %u/%u\n [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n",
len,
test_etag_len,
bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7],
test_etag[0], test_etag[1], test_etag[2], test_etag[3], test_etag[4], test_etag[5], test_etag[6], test_etag[7]);
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}
static void
res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/test DELETE (%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
REST.set_response_status(response, REST.status.DELETED);
}

137
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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* ETSI Plugtest resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
RESOURCE(res_plugtest_validate,
"title=\"Validation test resource\"",
res_get_handler,
NULL,
res_put_handler,
NULL);
static uint8_t validate_etag[8] = { 0 };
static uint8_t validate_etag_len = 1;
static uint8_t validate_change = 1;
static const uint8_t *bytes = NULL;
static size_t len = 0;
static void
validate_update_etag()
{
int i;
validate_etag_len = (random_rand() % 8) + 1;
for(i = 0; i < validate_etag_len; ++i) {
validate_etag[i] = random_rand();
}
validate_change = 0;
PRINTF("### SERVER ACTION ### Changed ETag %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n",
validate_etag_len, validate_etag[0], validate_etag[1], validate_etag[2], validate_etag[3], validate_etag[4], validate_etag[5], validate_etag[6], validate_etag[7]);
}
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
if(validate_change) {
validate_update_etag();
}
PRINTF("/validate GET");
PRINTF("(%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if((len = coap_get_header_etag(request, &bytes)) > 0
&& len == validate_etag_len && memcmp(validate_etag, bytes, len) == 0) {
PRINTF("validate ");
REST.set_response_status(response, REST.status.NOT_MODIFIED);
REST.set_header_etag(response, validate_etag, validate_etag_len);
validate_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
} else {
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_etag(response, validate_etag, validate_etag_len);
REST.set_header_max_age(response, 30);
REST.set_response_payload(
response,
buffer,
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
"Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code,
coap_req->mid));
}
}
static void
res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *)request;
PRINTF("/validate PUT ");
PRINTF("(%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);
if(((len = coap_get_header_if_match(request, &bytes)) > 0
&& (len == validate_etag_len
&& memcmp(validate_etag, bytes, len) == 0))
|| len == 0) {
validate_update_etag();
REST.set_header_etag(response, validate_etag, validate_etag_len);
REST.set_response_status(response, REST.status.CHANGED);
if(len > 0) {
validate_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
}
} else {
PRINTF(
"Check %u/%u\n [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n [0x%02X%02X%02X%02X%02X%02X%02X%02X] ",
len,
validate_etag_len,
bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7],
validate_etag[0], validate_etag[1], validate_etag[2], validate_etag[3], validate_etag[4], validate_etag[5], validate_etag[6], validate_etag[7]);
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}

89
examples/er-rest-example/resources/res-push.c Normal file
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@ -0,0 +1,89 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_periodic_handler(void);
PERIODIC_RESOURCE(res_push,
"title=\"Periodic demo\";obs",
res_get_handler,
NULL,
NULL,
NULL,
5 * CLOCK_SECOND,
res_periodic_handler);
/*
* Use local resource state that is accessed by res_get_handler() and altered by res_periodic_handler() or PUT or POST.
*/
static int32_t event_counter = 0;
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/*
* For minimal complexity, request query and options should be ignored for GET on observable resources.
* Otherwise the requests must be stored with the observer list and passed by REST.notify_subscribers().
* This would be a TODO in the corresponding files in contiki/apps/erbium/!
*/
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_max_age(response, res_push.periodic->period / CLOCK_SECOND);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, preferred_size, "VERY LONG EVENT %lu", event_counter));
/* The REST.subscription_handler() will be called for observable resources by the REST framework. */
}
/*
* Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE.
* It will be called by the REST manager process with the defined period.
*/
static void
res_periodic_handler()
{
/* Do a periodic task here, e.g., sampling a sensor. */
++event_counter;
/* Usually a condition is defined under with subscribers are notified, e.g., large enough delta in sensor reading. */
if(1) {
/* Notify the registered observers which will trigger the res_get_handler to create the response. */
REST.notify_subscribers(&res_push);
}
}

102
examples/er-rest-example/resources/res-radio.c Normal file
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@ -0,0 +1,102 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include "contiki.h"
#if PLATFORM_HAS_RADIO
#include <string.h>
#include "rest-engine.h"
#include "dev/radio-sensor.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/* A simple getter example. Returns the reading of the rssi/lqi from radio sensor */
RESOURCE(res_radio,
"title=\"RADIO: ?p=lqi|rssi\";rt=\"RadioSensor\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
size_t len = 0;
const char *p = NULL;
uint8_t param = 0;
int success = 1;
unsigned int accept = -1;
REST.get_header_accept(request, &accept);
if((len = REST.get_query_variable(request, "p", &p))) {
if(strncmp(p, "lqi", len) == 0) {
param = RADIO_SENSOR_LAST_VALUE;
} else if(strncmp(p, "rssi", len) == 0) {
param = RADIO_SENSOR_LAST_PACKET;
} else {
success = 0;
}
} else {
success = 0;
} if(success) {
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", radio_sensor.value(param));
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_JSON) {
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
if(param == RADIO_SENSOR_LAST_VALUE) {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'lqi':%d}", radio_sensor.value(param));
} else if(param == RADIO_SENSOR_LAST_PACKET) {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'rssi':%d}", radio_sensor.value(param));
}
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else {
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
} else {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
#endif /* PLATFORM_HAS_RADIO */

127
examples/er-rest-example/resources/res-separate.c Normal file
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/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
#include "er-coap-separate.h"
#include "er-coap-transactions.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static void res_resume_handler(void);
SEPARATE_RESOURCE(res_separate,
"title=\"Separate demo\"",
res_get_handler,
NULL,
NULL,
NULL,
res_resume_handler);
/* A structure to store the information required for the separate handler */
typedef struct application_separate_store {
/* Provided by Erbium to store generic request information such as remote address and token. */
coap_separate_t request_metadata;
/* Add fields for addition information to be stored for finalizing, e.g.: */
char buffer[16];
} application_separate_store_t;
#define COAP_MAX_OPEN_SEPARATE 2
static uint8_t separate_active = 0;
static application_separate_store_t separate_store[COAP_MAX_OPEN_SEPARATE];
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/*
* Example allows only one open separate response.
* For multiple, the application must manage the list of stores.
*/
if(separate_active >= COAP_MAX_OPEN_SEPARATE) {
coap_separate_reject();
} else {
++separate_active;
/* Take over and skip response by engine. */
coap_separate_accept(request, &separate_store->request_metadata);
/* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */
/*
* At the moment, only the minimal information is stored in the store (client address, port, token, MID, type, and Block2).
* Extend the store, if the application requires additional information from this handler.
* buffer is an example field for custom information.
*/
snprintf(separate_store->buffer, sizeof(separate_store->buffer), "StoredInfo");
}
}
static void
res_resume_handler()
{
if(separate_active) {
coap_transaction_t *transaction = NULL;
if((transaction = coap_new_transaction(separate_store->request_metadata.mid, &separate_store->request_metadata.addr, separate_store->request_metadata.port))) {
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
/* Restore the request information for the response. */
coap_separate_resume(response, &separate_store->request_metadata, REST.status.OK);
coap_set_payload(response, separate_store->buffer, strlen(separate_store->buffer));
/*
* Be aware to respect the Block2 option, which is also stored in the coap_separate_t.
* As it is a critical option, this example resource pretends to handle it for compliance.
*/
coap_set_header_block2(response, separate_store->request_metadata.block2_num, 0, separate_store->request_metadata.block2_size);
/* Warning: No check for serialization error. */
transaction->packet_len = coap_serialize_message(response, transaction->packet);
coap_send_transaction(transaction);
/* The engine will clear the transaction (right after send for NON, after acked for CON). */
/* FIXME there could me more! */
separate_active = 0;
} else {
/*
* Set timer for retry, send error message, ...
* The example simply waits for another button press.
*/
}
} /* if (separate_active) */
}

69
examples/er-rest-example/resources/res-sub.c Normal file
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@ -0,0 +1,69 @@
/*
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Example resource
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <string.h>
#include "rest-engine.h"
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
/*
* Example for a resource that also handles all its sub-resources.
* Use REST.get_url() to multiplex the handling of the request depending on the Uri-Path.
*/
PARENT_RESOURCE(res_sub,
"title=\"Sub-resource demo\"",
res_get_handler,
NULL,
NULL,
NULL);
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
const char *uri_path = NULL;
int len = REST.get_url(request, &uri_path);
int base_len = strlen(res_sub.url);
if(len == base_len) {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "Request any sub-resource of /%s", res_sub.url);
} else {
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, ".%.*s", len - base_len, uri_path + base_len);
} REST.set_response_payload(response, buffer, strlen((char *)buffer));
}

47
apps/er-coap-12/er-coap-12-separate.h → examples/er-rest-example/resources/res-toggle.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -31,36 +31,33 @@
/** /**
* \file * \file
* CoAP module for separate responses * Example resource
* \author * \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch> * Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/ */
#ifndef COAP_SEPARATE_H_ #include "contiki.h"
#define COAP_SEPARATE_H_
#include "er-coap-12.h" #if PLATFORM_HAS_LEDS
typedef struct coap_separate { #include <string.h>
#include "contiki.h"
#include "rest-engine.h"
#include "dev/leds.h"
uip_ipaddr_t addr; static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
uint16_t port;
coap_message_type_t type; /* A simple actuator example. Toggles the red led */
uint16_t mid; RESOURCE(res_toggle,
"title=\"Red LED\";rt=\"Control\"",
NULL,
res_post_handler,
NULL,
NULL);
uint8_t token_len; static void
uint8_t token[COAP_TOKEN_LEN]; res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* separate + blockwise is untested! */ leds_invert(LEDS_RED);
uint32_t block2_num; }
uint16_t block2_size; #endif /* PLATFORM_HAS_LEDS */
} coap_separate_t;
int coap_separate_handler(resource_t *resource, void *request, void *response);
void coap_separate_reject();
int coap_separate_accept(void *request, coap_separate_t *separate_store);
void coap_separate_resume(void *response, coap_separate_t *separate_store, uint8_t code);
#endif /* COAP_SEPARATE_H_ */

231
examples/er-rest-example/server-client-native.csc Normal file
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@ -0,0 +1,231 @@
<?xml version="1.0" encoding="UTF-8"?>
<simconf>
<project EXPORT="discard">[APPS_DIR]/mrm</project>
<project EXPORT="discard">[APPS_DIR]/mspsim</project>
<project EXPORT="discard">[APPS_DIR]/avrora</project>
<project EXPORT="discard">[APPS_DIR]/serial_socket</project>
<project EXPORT="discard">[APPS_DIR]/collect-view</project>
<project EXPORT="discard">[APPS_DIR]/powertracker</project>
<simulation>
<title>REST with RPL router</title>
<speedlimit>1.0</speedlimit>
<randomseed>123456</randomseed>
<motedelay_us>1000000</motedelay_us>
<radiomedium>
org.contikios.cooja.radiomediums.UDGM
<transmitting_range>50.0</transmitting_range>
<interference_range>50.0</interference_range>
<success_ratio_tx>1.0</success_ratio_tx>
<success_ratio_rx>1.0</success_ratio_rx>
</radiomedium>
<events>
<logoutput>40000</logoutput>
</events>
<motetype>
org.contikios.cooja.mspmote.SkyMoteType
<identifier>slipradio</identifier>
<description>Sky SLIP radio</description>
<source EXPORT="discard">[CONTIKI_DIR]/examples/ipv6/slip-radio/slip-radio.c</source>
<commands EXPORT="discard">make slip-radio.sky TARGET=sky</commands>
<firmware EXPORT="copy">[CONTIKI_DIR]/examples/ipv6/slip-radio/slip-radio.sky</firmware>
<moteinterface>org.contikios.cooja.interfaces.Position</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.RimeAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.IPAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.Mote2MoteRelations</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.MoteAttributes</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspClock</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspMoteID</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyButton</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyFlash</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyCoffeeFilesystem</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.Msp802154Radio</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspSerial</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyLED</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspDebugOutput</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyTemperature</moteinterface>
</motetype>
<motetype>
org.contikios.cooja.mspmote.SkyMoteType
<identifier>server</identifier>
<description>Erbium Server</description>
<source EXPORT="discard">[CONTIKI_DIR]/examples/er-rest-example/er-example-server.c</source>
<commands EXPORT="discard">make er-example-server.sky TARGET=sky</commands>
<firmware EXPORT="copy">[CONTIKI_DIR]/examples/er-rest-example/er-example-server.sky</firmware>
<moteinterface>org.contikios.cooja.interfaces.Position</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.RimeAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.IPAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.Mote2MoteRelations</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.MoteAttributes</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspClock</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspMoteID</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyButton</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyFlash</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyCoffeeFilesystem</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.Msp802154Radio</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspSerial</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyLED</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspDebugOutput</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyTemperature</moteinterface>
</motetype>
<motetype>
org.contikios.cooja.mspmote.SkyMoteType
<identifier>client</identifier>
<description>Erbium Client</description>
<source EXPORT="discard">[CONTIKI_DIR]/examples/er-rest-example/er-example-client.c</source>
<commands EXPORT="discard">make er-example-client.sky TARGET=sky</commands>
<firmware EXPORT="copy">[CONTIKI_DIR]/examples/er-rest-example/er-example-client.sky</firmware>
<moteinterface>org.contikios.cooja.interfaces.Position</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.RimeAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.IPAddress</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.Mote2MoteRelations</moteinterface>
<moteinterface>org.contikios.cooja.interfaces.MoteAttributes</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspClock</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspMoteID</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyButton</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyFlash</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyCoffeeFilesystem</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.Msp802154Radio</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspSerial</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyLED</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.MspDebugOutput</moteinterface>
<moteinterface>org.contikios.cooja.mspmote.interfaces.SkyTemperature</moteinterface>
</motetype>
<mote>
<breakpoints />
<interface_config>
org.contikios.cooja.interfaces.Position
<x>30.303994886410642</x>
<y>17.22128424003353</y>
<z>0.0</z>
</interface_config>
<interface_config>
org.contikios.cooja.mspmote.interfaces.MspMoteID
<id>1</id>
</interface_config>
<motetype_identifier>slipradio</motetype_identifier>
</mote>
<mote>
<breakpoints />
<interface_config>
org.contikios.cooja.interfaces.Position
<x>46.57186415376375</x>
<y>37.25589203828498</y>
<z>0.0</z>
</interface_config>
<interface_config>
org.contikios.cooja.mspmote.interfaces.MspMoteID
<id>2</id>
</interface_config>
<motetype_identifier>server</motetype_identifier>
</mote>
<mote>
<breakpoints />
<interface_config>
org.contikios.cooja.interfaces.Position
<x>18.194682268367348</x>
<y>50.210548118402656</y>
<z>0.0</z>
</interface_config>
<interface_config>
org.contikios.cooja.mspmote.interfaces.MspMoteID
<id>3</id>
</interface_config>
<motetype_identifier>client</motetype_identifier>
</mote>
</simulation>
<plugin>
org.contikios.cooja.plugins.SimControl
<width>259</width>
<z>0</z>
<height>179</height>
<location_x>1</location_x>
<location_y>2</location_y>
</plugin>
<plugin>
org.contikios.cooja.plugins.Visualizer
<plugin_config>
<skin>org.contikios.cooja.plugins.skins.IDVisualizerSkin</skin>
<skin>org.contikios.cooja.plugins.skins.UDGMVisualizerSkin</skin>
<skin>org.contikios.cooja.plugins.skins.MoteTypeVisualizerSkin</skin>
<skin>org.contikios.cooja.plugins.skins.AttributeVisualizerSkin</skin>
<skin>org.contikios.cooja.plugins.skins.LEDVisualizerSkin</skin>
<skin>org.contikios.cooja.plugins.skins.AddressVisualizerSkin</skin>
<viewport>2.255467003316979 0.0 0.0 2.255467003316979 59.30641698643764 -13.478401994502008</viewport>
</plugin_config>
<width>300</width>
<z>2</z>
<height>178</height>
<location_x>262</location_x>
<location_y>1</location_y>
</plugin>
<plugin>
org.contikios.cooja.plugins.LogListener
<plugin_config>
<filter />
<formatted_time />
<coloring />
</plugin_config>
<width>762</width>
<z>4</z>
<height>491</height>
<location_x>2</location_x>
<location_y>182</location_y>
</plugin>
<plugin>
org.contikios.cooja.plugins.RadioLogger
<plugin_config>
<split>150</split>
<formatted_time />
<showdups>false</showdups>
<hidenodests>false</hidenodests>
<analyzers name="6lowpan" />
</plugin_config>
<width>451</width>
<z>-1</z>
<height>305</height>
<location_x>73</location_x>
<location_y>140</location_y>
<minimized>true</minimized>
</plugin>
<plugin>
org.contikios.cooja.plugins.TimeLine
<plugin_config>
<mote>0</mote>
<mote>1</mote>
<mote>2</mote>
<showRadioRXTX />
<showRadioHW />
<showLEDs />
<showWatchpoints />
<zoomfactor>25.49079397896416</zoomfactor>
</plugin_config>
<width>1624</width>
<z>5</z>
<height>252</height>
<location_x>6</location_x>
<location_y>712</location_y>
</plugin>
<plugin>
org.contikios.cooja.plugins.MoteInterfaceViewer
<mote_arg>1</mote_arg>
<plugin_config>
<interface>Serial port</interface>
<scrollpos>0,0</scrollpos>
</plugin_config>
<width>853</width>
<z>3</z>
<height>491</height>
<location_x>765</location_x>
<location_y>182</location_y>
</plugin>
<plugin>
SerialSocketServer
<mote_arg>0</mote_arg>
<width>422</width>
<z>1</z>
<height>82</height>
<location_x>606</location_x>
<location_y>51</location_y>
</plugin>
</simconf>

10
examples/er-rest-example/server-client.csc
View File

@ -8,6 +8,7 @@
<project EXPORT="discard">[APPS_DIR]/powertracker</project> <project EXPORT="discard">[APPS_DIR]/powertracker</project>
<simulation> <simulation>
<title>REST with RPL router</title> <title>REST with RPL router</title>
<speedlimit>1.0</speedlimit>
<randomseed>123456</randomseed> <randomseed>123456</randomseed>
<motedelay_us>1000000</motedelay_us> <motedelay_us>1000000</motedelay_us>
<radiomedium> <radiomedium>
@ -137,8 +138,8 @@
<width>259</width> <width>259</width>
<z>0</z> <z>0</z>
<height>179</height> <height>179</height>
<location_x>0</location_x> <location_x>2</location_x>
<location_y>0</location_y> <location_y>1</location_y>
</plugin> </plugin>
<plugin> <plugin>
org.contikios.cooja.plugins.Visualizer org.contikios.cooja.plugins.Visualizer
@ -161,6 +162,7 @@
org.contikios.cooja.plugins.LogListener org.contikios.cooja.plugins.LogListener
<plugin_config> <plugin_config>
<filter /> <filter />
<formatted_time />
<coloring /> <coloring />
</plugin_config> </plugin_config>
<width>762</width> <width>762</width>
@ -173,6 +175,9 @@
org.contikios.cooja.plugins.RadioLogger org.contikios.cooja.plugins.RadioLogger
<plugin_config> <plugin_config>
<split>150</split> <split>150</split>
<formatted_time />
<showdups>false</showdups>
<hidenodests>false</hidenodests>
<analyzers name="6lowpan" /> <analyzers name="6lowpan" />
</plugin_config> </plugin_config>
<width>451</width> <width>451</width>
@ -201,7 +206,6 @@
<showRadioHW /> <showRadioHW />
<showLEDs /> <showLEDs />
<showWatchpoints /> <showWatchpoints />
<split>125</split>
<zoomfactor>25.49079397896416</zoomfactor> <zoomfactor>25.49079397896416</zoomfactor>
</plugin_config> </plugin_config>
<width>1624</width> <width>1624</width>

24
examples/er-rest-example/server-only.csc
View File

@ -8,6 +8,7 @@
<project EXPORT="discard">[APPS_DIR]/powertracker</project> <project EXPORT="discard">[APPS_DIR]/powertracker</project>
<simulation> <simulation>
<title>REST with RPL router</title> <title>REST with RPL router</title>
<speedlimit>1.0</speedlimit>
<randomseed>123456</randomseed> <randomseed>123456</randomseed>
<motedelay_us>1000000</motedelay_us> <motedelay_us>1000000</motedelay_us>
<radiomedium> <radiomedium>
@ -100,8 +101,8 @@
<width>259</width> <width>259</width>
<z>0</z> <z>0</z>
<height>179</height> <height>179</height>
<location_x>0</location_x> <location_x>2</location_x>
<location_y>0</location_y> <location_y>1</location_y>
</plugin> </plugin>
<plugin> <plugin>
org.contikios.cooja.plugins.Visualizer org.contikios.cooja.plugins.Visualizer
@ -115,19 +116,20 @@
<viewport>7.9849281638410705 0.0 0.0 7.9849281638410705 -133.27812697619663 -225.04752569190535</viewport> <viewport>7.9849281638410705 0.0 0.0 7.9849281638410705 -133.27812697619663 -225.04752569190535</viewport>
</plugin_config> </plugin_config>
<width>300</width> <width>300</width>
<z>5</z> <z>1</z>
<height>175</height> <height>175</height>
<location_x>263</location_x> <location_x>262</location_x>
<location_y>3</location_y> <location_y>2</location_y>
</plugin> </plugin>
<plugin> <plugin>
org.contikios.cooja.plugins.LogListener org.contikios.cooja.plugins.LogListener
<plugin_config> <plugin_config>
<filter /> <filter />
<formatted_time />
<coloring /> <coloring />
</plugin_config> </plugin_config>
<width>560</width> <width>560</width>
<z>2</z> <z>3</z>
<height>326</height> <height>326</height>
<location_x>1</location_x> <location_x>1</location_x>
<location_y>293</location_y> <location_y>293</location_y>
@ -136,6 +138,9 @@
org.contikios.cooja.plugins.RadioLogger org.contikios.cooja.plugins.RadioLogger
<plugin_config> <plugin_config>
<split>150</split> <split>150</split>
<formatted_time />
<showdups>false</showdups>
<hidenodests>false</hidenodests>
<analyzers name="6lowpan" /> <analyzers name="6lowpan" />
</plugin_config> </plugin_config>
<width>451</width> <width>451</width>
@ -149,7 +154,7 @@
SerialSocketServer SerialSocketServer
<mote_arg>0</mote_arg> <mote_arg>0</mote_arg>
<width>422</width> <width>422</width>
<z>3</z> <z>4</z>
<height>74</height> <height>74</height>
<location_x>39</location_x> <location_x>39</location_x>
<location_y>199</location_y> <location_y>199</location_y>
@ -163,11 +168,10 @@
<showRadioHW /> <showRadioHW />
<showLEDs /> <showLEDs />
<showWatchpoints /> <showWatchpoints />
<split>125</split>
<zoomfactor>25.49079397896416</zoomfactor> <zoomfactor>25.49079397896416</zoomfactor>
</plugin_config> </plugin_config>
<width>1624</width> <width>1624</width>
<z>4</z> <z>5</z>
<height>252</height> <height>252</height>
<location_x>4</location_x> <location_x>4</location_x>
<location_y>622</location_y> <location_y>622</location_y>
@ -180,7 +184,7 @@
<scrollpos>0,0</scrollpos> <scrollpos>0,0</scrollpos>
</plugin_config> </plugin_config>
<width>702</width> <width>702</width>
<z>1</z> <z>2</z>
<height>646</height> <height>646</height>
<location_x>564</location_x> <location_x>564</location_x>
<location_y>2</location_y> <location_y>2</location_y>