262 lines
7.9 KiB
C
262 lines
7.9 KiB
C
/*
|
|
* 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
|
|
* A simple web server forwarding page generation to a protothread
|
|
* \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"
|
|
|
|
//#include "urlconv.h"
|
|
|
|
#include "httpd-simple.h"
|
|
#define webserver_log_file(...)
|
|
#define webserver_log(...)
|
|
|
|
#ifndef WEBSERVER_CONF_CFS_CONNS
|
|
#define CONNS UIP_TCP_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);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
const char http_content_type_html[] = "Content-type: text/html\r\n\r\n";
|
|
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);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
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";
|
|
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) {
|
|
strncpy(s->filename, "/notfound.html", sizeof(s->filename));
|
|
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);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
const char http_get[] = "GET ";
|
|
const char http_index_html[] = "/index.html";
|
|
//const char http_referer[] = "Referer:"
|
|
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);
|
|
|
|
s->state = STATE_OUTPUT;
|
|
|
|
while(1) {
|
|
PSOCK_READTO(&s->sin, ISO_nl);
|
|
#if 0
|
|
if(strncmp(s->inputbuf, http_referer, 8) == 0) {
|
|
s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0;
|
|
webserver_log(s->inputbuf);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
PSOCK_END(&s->sin);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
handle_connection(struct httpd_state *s)
|
|
{
|
|
handle_input(s);
|
|
if(s->state == STATE_OUTPUT) {
|
|
handle_output(s);
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
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();
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
httpd_init(void)
|
|
{
|
|
|
|
tcp_listen(UIP_HTONS(80));
|
|
memb_init(&conns);
|
|
#if URLCONV
|
|
urlconv_init();
|
|
#endif /* URLCONV */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|