contiki/examples/sky-ip/ajax-cgi.c

231 lines
6.8 KiB
C

/*
* Copyright (c) 2001, Adam Dunkels.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
*
* $Id: ajax-cgi.c,v 1.2 2008/11/06 08:24:20 adamdunkels Exp $
*
*/
/*
* This file includes functions that are called by the web server
* scripts. The functions takes no argument, and the return value is
* interpreted as follows. A zero means that the function did not
* complete and should be invoked for the next packet as well. A
* non-zero value indicates that the function has completed and that
* the web server should move along to the next script line.
*
*/
#include <stdio.h>
#include <string.h>
#include "contiki-net.h"
#include "httpd.h"
#include "httpd-cgi.h"
#include "httpd-fs.h"
#include "lib/petsciiconv.h"
static struct httpd_cgi_call *calls = NULL;
/*---------------------------------------------------------------------------*/
static
PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
httpd_cgifunction
httpd_cgi(char *name)
{
struct httpd_cgi_call *f;
/* Find the matching name in the table, return the function. */
for(f = calls; f != NULL; f = f->next) {
if(strncmp(f->name, name, strlen(f->name)) == 0) {
return f->function;
}
}
return nullfunction;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(nodeidcall(struct httpd_state *s, char *ptr))
{
static char buf[10];
PSOCK_BEGIN(&s->sout);
snprintf(buf, sizeof(buf), "%d.%d",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1]);
PSOCK_SEND_STR(&s->sout, buf);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
void
httpd_cgi_add(struct httpd_cgi_call *c)
{
struct httpd_cgi_call *l;
c->next = NULL;
if(calls == NULL) {
calls = c;
} else {
for(l = calls; l->next != NULL; l = l->next);
l->next = c;
}
}
/*---------------------------------------------------------------------------*/
#include "dev/sht11.h"
#include "dev/light.h"
static
PT_THREAD(sensorscall(struct httpd_state *s, char *ptr))
{
static struct timer t;
static int i;
static char buf[100];
static unsigned long last_cpu, last_lpm, last_listen, last_transmit;
PSOCK_BEGIN(&s->sout);
timer_set(&t, CLOCK_SECOND);
i = 0;
while(1) {
timer_restart(&t);
PSOCK_WAIT_UNTIL(&s->sout, timer_expired(&t));
snprintf(buf, sizeof(buf),
"<script type='text/javascript'>t(%d);h(%d);l1(%d);l2(%d);</script>",
sht11_temp(),
sht11_humidity(),
sensors_light1(),
sensors_light2());
PSOCK_SEND_STR(&s->sout, buf);
timer_restart(&t);
PSOCK_WAIT_UNTIL(&s->sout, timer_expired(&t));
snprintf(buf, sizeof(buf),
"<script type='text/javascript'>p(%lu,%lu,%lu,%lu);i(%d);</script>",
energest_type_time(ENERGEST_TYPE_CPU) - last_cpu,
energest_type_time(ENERGEST_TYPE_LPM) - last_lpm,
energest_type_time(ENERGEST_TYPE_TRANSMIT) - last_transmit,
energest_type_time(ENERGEST_TYPE_LISTEN) - last_listen,
i++);
last_cpu = energest_type_time(ENERGEST_TYPE_CPU);
last_lpm = energest_type_time(ENERGEST_TYPE_LPM);
last_transmit = energest_type_time(ENERGEST_TYPE_TRANSMIT);
last_listen = energest_type_time(ENERGEST_TYPE_LISTEN);
PSOCK_SEND_STR(&s->sout, buf);
}
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_neighbor(void *arg)
{
struct httpd_state *s = (struct httpd_state *)arg;
struct neighbor *n = neighbor_get(s->u.count);
if(n == NULL) {
return 0;
}
return snprintf((char *)uip_appdata, uip_mss(),
"<li><a href=\"http://172.16.%d.%d/\">%d.%d</a>\r\n",
n->addr.u8[0], n->addr.u8[1],
n->addr.u8[0], n->addr.u8[1]);
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(neighborscall(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
/* printf("neighbor_num %d\n", neighbor_num());*/
for(s->u.count = 0; s->u.count < neighbor_num(); s->u.count++) {
/* printf("count %d\n", s->u.count);*/
if(neighbor_get(s->u.count) != NULL) {
/* printf("!= NULL\n");*/
PSOCK_GENERATOR_SEND(&s->sout, make_neighbor, s);
}
}
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static void
adv_received(struct neighbor_discovery_conn *c, rimeaddr_t *from,
uint16_t rtmetric)
{
struct neighbor *n;
/* printf("adv_received %d.%d\n", from->u8[0], from->u8[1]);*/
n = neighbor_find(from);
if(n == NULL) {
neighbor_add(from, rtmetric, 1);
} else {
neighbor_update(n, rtmetric);
}
}
static const struct neighbor_discovery_callbacks neighbor_discovery_callbacks =
{ adv_received, NULL};
HTTPD_CGI_CALL(sensors, "sensors", sensorscall);
HTTPD_CGI_CALL(nodeid, "nodeid", nodeidcall);
HTTPD_CGI_CALL(neighbors, "neighbors", neighborscall);
static struct neighbor_discovery_conn conn;
void
httpd_cgi_init(void)
{
httpd_cgi_add(&sensors);
httpd_cgi_add(&nodeid);
httpd_cgi_add(&neighbors);
neighbor_discovery_open(&conn, 31,
CLOCK_SECOND * 4,
CLOCK_SECOND * 20,
CLOCK_SECOND * 60,
&neighbor_discovery_callbacks);
neighbor_discovery_start(&conn, 0);
}
/*---------------------------------------------------------------------------*/