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393 lines
12 KiB
C
393 lines
12 KiB
C
/*
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* Copyright (c) 2015, Yanzi Networks AB.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* IPSO Objects and OMA LWM2M example.
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* \author
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* Joakim Eriksson, joakime@sics.se
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* Niclas Finne, nfi@sics.se
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*/
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#include "contiki.h"
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#include "net/ip/uip.h"
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#include "net/rpl/rpl.h"
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#include "net/netstack.h"
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#include "er-coap-constants.h"
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#include "er-coap-engine.h"
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#include "lwm2m-engine.h"
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#include "oma-tlv.h"
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#include "dev/serial-line.h"
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#include "serial-protocol.h"
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#if CONTIKI_TARGET_WISMOTE
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#include "dev/uart1.h"
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#endif
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#define DEBUG DEBUG_PRINT
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#include "net/ip/uip-debug.h"
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#define REMOTE_PORT UIP_HTONS(COAP_DEFAULT_PORT)
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#define URL_WELL_KNOWN ".well-known/core"
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#define URL_DEVICE_MODEL "/3/0/1"
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#define URL_DEVICE_FIRMWARE_VERSION "/3/0/3"
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#define URL_LIGHT_CONTROL "/3311/0/5850"
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#define URL_POWER_CONTROL "/3312/0/5850"
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#define MAX_NODES 10
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#define NODE_HAS_TYPE (1 << 0)
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struct node {
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uip_ipaddr_t ipaddr;
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char type[32];
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uint8_t flags;
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uint8_t retries;
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};
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static struct node nodes[MAX_NODES];
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static uint8_t node_count;
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static struct node *current_target;
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static char current_uri[32] = URL_LIGHT_CONTROL;
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static char current_value[32] = "1";
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static int current_request = COAP_PUT;
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static uint8_t fetching_type = 0;
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PROCESS(router_process, "router process");
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AUTOSTART_PROCESSES(&router_process);
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/*---------------------------------------------------------------------------*/
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static struct node *
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add_node(const uip_ipaddr_t *addr)
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{
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int i;
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].ipaddr, addr)) {
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/* Node already added */
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return &nodes[i];
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}
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}
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if(node_count < MAX_NODES) {
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uip_ipaddr_copy(&nodes[node_count].ipaddr, addr);
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return &nodes[node_count++];
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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void
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set_value(const uip_ipaddr_t *addr, char *uri, char *value)
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{
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int i;
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printf("#set value ");
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uip_debug_ipaddr_print(addr);
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printf(" URI: %s Value: %s\n", uri, value);
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].ipaddr, addr)) {
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/* setup command */
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current_target = &nodes[i];
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current_request = COAP_PUT;
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strncpy(current_uri, uri, sizeof(current_uri) - 1);
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strncpy(current_value, value, sizeof(current_value) - 1);
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process_poll(&router_process);
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break;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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get_value(const uip_ipaddr_t *addr, char *uri)
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{
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int i;
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printf("#get value ");
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uip_debug_ipaddr_print(addr);
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printf(" URI: %s\n", uri);
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].ipaddr, addr)) {
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/* setup command */
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current_target = &nodes[i];
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current_request = COAP_GET;
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strncpy(current_uri, uri, sizeof(current_uri) - 1);
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current_value[0] = 0;
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process_poll(&router_process);
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break;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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print_node_list(void)
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{
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int i;
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int out = 0;
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for(i = 0; i < node_count; i++) {
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if(nodes[i].flags & NODE_HAS_TYPE) {
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if(out++) {
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printf(";");
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}
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printf("%s,", nodes[i].type);
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uip_debug_ipaddr_print(&nodes[i].ipaddr);
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}
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}
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printf("\n");
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}
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/*---------------------------------------------------------------------------*/
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/**
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* This function is will be passed to COAP_BLOCKING_REQUEST() to
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* handle responses.
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*/
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static void
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client_chunk_handler(void *response)
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{
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const uint8_t *chunk;
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unsigned int format;
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int len = coap_get_payload(response, &chunk);
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coap_get_header_content_format(response, &format);
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/* if(len > 0) { */
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/* printf("|%.*s (%d,%d)", len, (char *)chunk, len, format); */
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/* } */
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if(current_target != NULL && fetching_type) {
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if(len > sizeof(current_target->type) - 1) {
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len = sizeof(current_target->type) - 1;
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}
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memcpy(current_target->type, chunk, len);
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current_target->type[len] = 0;
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current_target->flags |= NODE_HAS_TYPE;
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PRINTF("\nNODE ");
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PRINT6ADDR(¤t_target->ipaddr);
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PRINTF(" HAS TYPE %s\n", current_target->type);
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} else {
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/* otherwise update the current value */
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if(format == LWM2M_TLV) {
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oma_tlv_t tlv;
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/* we can only read int32 for now ? */
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if(oma_tlv_read(&tlv, chunk, len) > 0) {
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/* printf("TLV.type=%d len=%d id=%d value[0]=%d\n", */
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/* tlv.type, tlv.length, tlv.id, tlv.value[0]); */
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int value = oma_tlv_get_int32(&tlv);
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snprintf(current_value, sizeof(current_value), "%d", value);
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}
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} else {
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if(len > sizeof(current_value) - 1) {
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len = sizeof(current_value) - 1;
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}
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memcpy(current_value, chunk, len);
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current_value[len] = 0;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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setup_network(void)
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{
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uip_ipaddr_t ipaddr;
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struct uip_ds6_addr *root_if;
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rpl_dag_t *dag;
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int i;
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uint8_t state;
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#if CONTIKI_TARGET_WISMOTE
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uart1_set_input(serial_line_input_byte);
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serial_line_init();
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#endif
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#if UIP_CONF_ROUTER
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/**
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* The choice of server address determines its 6LoWPAN header compression.
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* Obviously the choice made here must also be selected in udp-client.c.
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*
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* For correct Wireshark decoding using a sniffer, add the /64 prefix to the 6LowPAN protocol preferences,
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* e.g. set Context 0 to fd00::. At present Wireshark copies Context/128 and then overwrites it.
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* (Setting Context 0 to fd00::1111:2222:3333:4444 will report a 16 bit compressed address of fd00::1111:22ff:fe33:xxxx)
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* Note Wireshark's IPCMV6 checksum verification depends on the correct uncompressed addresses.
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*/
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#if 0
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/* Mode 1 - 64 bits inline */
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uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 1);
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#elif 1
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/* Mode 2 - 16 bits inline */
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uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0x00ff, 0xfe00, 1);
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#else
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/* Mode 3 - derived from link local (MAC) address */
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uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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#endif
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uip_ds6_addr_add(&ipaddr, 0, ADDR_MANUAL);
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root_if = uip_ds6_addr_lookup(&ipaddr);
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if(root_if != NULL) {
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dag = rpl_set_root(RPL_DEFAULT_INSTANCE, &ipaddr);
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uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 0);
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rpl_set_prefix(dag, &ipaddr, 64);
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PRINTF("created a new RPL dag\n");
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} else {
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PRINTF("failed to create a new RPL DAG\n");
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}
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#endif /* UIP_CONF_ROUTER */
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PRINTF("IPv6 addresses: ");
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(state == ADDR_TENTATIVE || state == ADDR_PREFERRED) {
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PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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PRINTF("\n");
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/* hack to make address "final" */
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if (state == ADDR_TENTATIVE) {
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uip_ds6_if.addr_list[i].state = ADDR_PREFERRED;
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}
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(router_process, ev, data)
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{
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/* This way the packet can be treated as pointer as usual. */
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static coap_packet_t request[1];
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static struct etimer timer;
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uip_ds6_route_t *r;
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uip_ipaddr_t *nexthop;
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int n;
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PROCESS_BEGIN();
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PROCESS_PAUSE();
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/* receives all CoAP messages */
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coap_init_engine();
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setup_network();
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/* The data sink runs with a 100% duty cycle in order to ensure high
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packet reception rates. */
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NETSTACK_MAC.off(1);
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while(1) {
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etimer_set(&timer, CLOCK_SECOND * 5);
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PROCESS_YIELD();
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/* Handle serial line input */
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if(ev == serial_line_event_message) {
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serial_protocol_input((char *) data);
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}
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if(etimer_expired(&timer)) {
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current_target = NULL;
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n = 0;
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for(r = uip_ds6_route_head(); r != NULL; r = uip_ds6_route_next(r)) {
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current_target = add_node(&r->ipaddr);
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if(current_target == NULL ||
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(current_target->flags & NODE_HAS_TYPE) != 0 ||
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current_target->retries > 5) {
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continue;
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}
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PRINTF(" ");
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PRINT6ADDR(&r->ipaddr);
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PRINTF(" -> ");
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nexthop = uip_ds6_route_nexthop(r);
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if(nexthop != NULL) {
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PRINT6ADDR(nexthop);
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PRINTF("\n");
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} else {
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PRINTF("-");
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}
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PRINTF("\n");
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n++;
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break;
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}
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}
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/* This is a node type discovery */
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if(current_target != NULL &&
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(current_target->flags & NODE_HAS_TYPE) == 0 &&
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current_target->retries < 6) {
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/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
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coap_init_message(request, COAP_TYPE_CON, COAP_GET, 0);
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coap_set_header_uri_path(request, URL_DEVICE_MODEL);
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current_target->retries++;
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PRINTF("CoAP request to [");
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PRINT6ADDR(¤t_target->ipaddr);
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PRINTF("]:%u (%u tx)\n", UIP_HTONS(REMOTE_PORT),
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current_target->retries);
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fetching_type = 1;
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COAP_BLOCKING_REQUEST(¤t_target->ipaddr, REMOTE_PORT, request,
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client_chunk_handler);
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fetching_type = 0;
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strncpy(current_uri, URL_LIGHT_CONTROL, sizeof(current_uri));
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printf("\n--Done--\n");
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}
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/* If having a type this is another type of request */
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if(current_target != NULL &&
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(current_target->flags & NODE_HAS_TYPE) && strlen(current_uri) > 0) {
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/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
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coap_init_message(request, COAP_TYPE_CON, current_request, 0);
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coap_set_header_uri_path(request, current_uri);
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if(strlen(current_value) > 0) {
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coap_set_payload(request, (uint8_t *)current_value,
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strlen(current_value));
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}
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PRINTF("CoAP request to [");
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PRINT6ADDR(¤t_target->ipaddr);
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PRINTF("]:%u %s\n", UIP_HTONS(REMOTE_PORT), current_uri);
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COAP_BLOCKING_REQUEST(¤t_target->ipaddr, REMOTE_PORT, request,
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client_chunk_handler);
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/* print out result of command */
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if(current_request == COAP_PUT) {
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printf("s ");
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} else {
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printf("g ");
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}
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uip_debug_ipaddr_print(¤t_target->ipaddr);
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printf(" %s %s\n", current_uri, current_value);
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current_target = NULL;
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current_uri[0] = 0;
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current_value[0] = 0;
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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