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osd-contiki/examples/ipv6/rpl-border-router/httpd-simple.c

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Added simple web server listing the neighbors and routes
2010-05-09 14:52:05 +02:00
/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* 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.
*
*/
/**
* \file
corrected comment
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* A simple web server forwarding page generation to a protothread
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* \author
* Adam Dunkels <adam@sics.se>
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#include <stdio.h>
#include <string.h>
#include "contiki-net.h"
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//#include "urlconv.h"
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#include "httpd-simple.h"
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#define webserver_log_file(...)
#define webserver_log(...)
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#ifndef WEBSERVER_CONF_CFS_CONNS
#define CONNS UIP_CONNS
#else /* WEBSERVER_CONF_CFS_CONNS */
#define CONNS WEBSERVER_CONF_CFS_CONNS
#endif /* WEBSERVER_CONF_CFS_CONNS */
#ifndef WEBSERVER_CONF_CFS_URLCONV
#define URLCONV 0
#else /* WEBSERVER_CONF_CFS_URLCONV */
#define URLCONV WEBSERVER_CONF_CFS_URLCONV
#endif /* WEBSERVER_CONF_CFS_URLCONV */
#define STATE_WAITING 0
#define STATE_OUTPUT 1
MEMB(conns, struct httpd_state, CONNS);
#define ISO_nl 0x0a
#define ISO_space 0x20
#define ISO_period 0x2e
#define ISO_slash 0x2f
/*---------------------------------------------------------------------------*/
static const char *NOT_FOUND = "<html><body bgcolor=\"white\">"
"<center>"
"<h1>404 - file not found</h1>"
"</center>"
"</body>"
"</html>";
/*---------------------------------------------------------------------------*/
static
PT_THREAD(send_string(struct httpd_state *s, const char *str))
{
PSOCK_BEGIN(&s->sout);
SEND_STRING(&s->sout, str);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
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const char http_content_type_html[] = "Content-type: text/html\r\n\r\n";
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static
PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr))
{
/* char *ptr; */
PSOCK_BEGIN(&s->sout);
SEND_STRING(&s->sout, statushdr);
/* ptr = strrchr(s->filename, ISO_period); */
/* if(ptr == NULL) { */
/* s->ptr = http_content_type_plain; */
/* } else if(strcmp(http_html, ptr) == 0) { */
/* s->ptr = http_content_type_html; */
/* } else if(strcmp(http_css, ptr) == 0) { */
/* s->ptr = http_content_type_css; */
/* } else if(strcmp(http_png, ptr) == 0) { */
/* s->ptr = http_content_type_png; */
/* } else if(strcmp(http_gif, ptr) == 0) { */
/* s->ptr = http_content_type_gif; */
/* } else if(strcmp(http_jpg, ptr) == 0) { */
/* s->ptr = http_content_type_jpg; */
/* } else { */
/* s->ptr = http_content_type_binary; */
/* } */
/* SEND_STRING(&s->sout, s->ptr); */
SEND_STRING(&s->sout, http_content_type_html);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
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const char http_header_200[] = "HTTP/1.0 200 OK\r\nServer: Contiki/2.4 http://www.sics.se/contiki/\r\nConnection: close\r\n";
const char http_header_404[] = "HTTP/1.0 404 Not found\r\nServer: Contiki/2.4 http://www.sics.se/contiki/\r\nConnection: close\r\n";
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static
PT_THREAD(handle_output(struct httpd_state *s))
{
PT_BEGIN(&s->outputpt);
s->script = NULL;
s->script = httpd_simple_get_script(&s->filename[1]);
if(s->script == NULL) {
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strncpy(s->filename, "/notfound.html", sizeof(s->filename));
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PT_WAIT_THREAD(&s->outputpt,
send_headers(s, http_header_404));
PT_WAIT_THREAD(&s->outputpt,
send_string(s, NOT_FOUND));
uip_close();
webserver_log_file(&uip_conn->ripaddr, "404 - not found");
PT_EXIT(&s->outputpt);
} else {
PT_WAIT_THREAD(&s->outputpt,
send_headers(s, http_header_200));
PT_WAIT_THREAD(&s->outputpt, s->script(s));
}
s->script = NULL;
PSOCK_CLOSE(&s->sout);
PT_END(&s->outputpt);
}
/*---------------------------------------------------------------------------*/
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const char http_get[] = "GET ";
const char http_index_html[] = "/index.html";
//const char http_referer[] = "Referer:"
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static
PT_THREAD(handle_input(struct httpd_state *s))
{
PSOCK_BEGIN(&s->sin);
PSOCK_READTO(&s->sin, ISO_space);
if(strncmp(s->inputbuf, http_get, 4) != 0) {
PSOCK_CLOSE_EXIT(&s->sin);
}
PSOCK_READTO(&s->sin, ISO_space);
if(s->inputbuf[0] != ISO_slash) {
PSOCK_CLOSE_EXIT(&s->sin);
}
#if URLCONV
s->inputbuf[PSOCK_DATALEN(&s->sin) - 1] = 0;
urlconv_tofilename(s->filename, s->inputbuf, sizeof(s->filename));
#else /* URLCONV */
if(s->inputbuf[1] == ISO_space) {
strncpy(s->filename, http_index_html, sizeof(s->filename));
} else {
s->inputbuf[PSOCK_DATALEN(&s->sin) - 1] = 0;
strncpy(s->filename, s->inputbuf, sizeof(s->filename));
}
#endif /* URLCONV */
webserver_log_file(&uip_conn->ripaddr, s->filename);
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s->state = STATE_OUTPUT;
while(1) {
PSOCK_READTO(&s->sin, ISO_nl);
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#if 0
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if(strncmp(s->inputbuf, http_referer, 8) == 0) {
s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0;
webserver_log(s->inputbuf);
}
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#endif
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}
PSOCK_END(&s->sin);
}
/*---------------------------------------------------------------------------*/
static void
handle_connection(struct httpd_state *s)
{
handle_input(s);
if(s->state == STATE_OUTPUT) {
handle_output(s);
}
}
[Forget to add to previous commit] Free internal webserver from dependency on /apps/webserver.
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/*---------------------------------------------------------------------------*/
void
httpd_appcall(void *state)
{
struct httpd_state *s = (struct httpd_state *)state;
if(uip_closed() || uip_aborted() || uip_timedout()) {
if(s != NULL) {
s->script = NULL;
memb_free(&conns, s);
}
} else if(uip_connected()) {
s = (struct httpd_state *)memb_alloc(&conns);
if(s == NULL) {
uip_abort();
webserver_log_file(&uip_conn->ripaddr, "reset (no memory block)");
return;
}
tcp_markconn(uip_conn, s);
PSOCK_INIT(&s->sin, (uint8_t *)s->inputbuf, sizeof(s->inputbuf) - 1);
PSOCK_INIT(&s->sout, (uint8_t *)s->inputbuf, sizeof(s->inputbuf) - 1);
PT_INIT(&s->outputpt);
s->script = NULL;
s->state = STATE_WAITING;
timer_set(&s->timer, CLOCK_SECOND * 10);
handle_connection(s);
} else if(s != NULL) {
if(uip_poll()) {
if(timer_expired(&s->timer)) {
uip_abort();
s->script = NULL;
memb_free(&conns, s);
webserver_log_file(&uip_conn->ripaddr, "reset (timeout)");
}
} else {
timer_restart(&s->timer);
}
handle_connection(s);
} else {
uip_abort();
}
}
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/*---------------------------------------------------------------------------*/
void
httpd_init(void)
{
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A simple but substantial change: uIP used the htons()/HTONS() macro functions for converting between host and network byte order. These names are the de facto standard names for this functionality because of the original BSD TCP/IP implementation. But they cause problems for uIP/Contiki: some platforms define these names themselves (Mac OS, most notably), causing compilation problems for Contiki on those platforms. This commit changes all htons to uip_htons instead. Same goes for htonl, ntohs, and ntohl. All-caps versions as well.
2010-10-19 20:29:03 +02:00
tcp_listen(UIP_HTONS(80));
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memb_init(&conns);
Up to now the root of the webserver filesystem was always the current directory. Now an optional file 'wwwroot.cfg' is read. If present its content is used as prefix in the conversion of http paths to local paths. This prefix may be a relative path as well as an absolute path. This is especially useful for the cc65-based targets as it ain't possible there to "just change into the wwwroot directory and start the webserver using its pathname".
2010-08-30 21:44:38 +02:00
#if URLCONV
urlconv_init();
fixed compilation bug
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#endif /* URLCONV */
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}
/*---------------------------------------------------------------------------*/
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