426 lines
12 KiB
C
426 lines
12 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.
|
|
*
|
|
* $Id: httpd-simple-avr.c,v 1.4 2010/11/12 20:49:03 dak664 Exp $
|
|
*/
|
|
|
|
/**
|
|
* \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>
|
|
* David Kopf <dak664@embarqmail.com> (AVR adaptation)
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <avr/pgmspace.h>
|
|
#include "contiki-net.h"
|
|
|
|
#ifndef WEBSERVER_CONF_CFS_PATHLEN
|
|
#define HTTPD_PATHLEN 2
|
|
#else
|
|
#define HTTPD_PATHLEN WEBSERVER_CONF_CFS_PATHLEN
|
|
#endif
|
|
|
|
struct httpd_state;
|
|
typedef char (* httpd_simple_script_t)(struct httpd_state *s);
|
|
|
|
struct httpd_state {
|
|
struct timer timer;
|
|
struct psock sin, sout;
|
|
struct pt outputpt;
|
|
char inputbuf[HTTPD_PATHLEN + 30];
|
|
char outputbuf[UIP_TCP_MSS];
|
|
char filename[HTTPD_PATHLEN];
|
|
httpd_simple_script_t script;
|
|
char state;
|
|
};
|
|
|
|
/* DEBUGLOGIC is a convenient way to debug in a simulator without a tcp/ip connection.
|
|
* Break the program in the process loop and step from the entry in httpd_appcall.
|
|
* The input file is forced to /index.html and the output directed to uip_aligned_buf.
|
|
* If cgi's are invoked define it in httpd-cgi.c as well!
|
|
* psock_generator_send in /core/net/psock.c must also be modified as follows:
|
|
* ...
|
|
* // Wait until all data is sent and acknowledged.
|
|
* if (!s->sendlen) break; //<---add this line
|
|
* PT_YIELD_UNTIL(&s->psockpt, uip_acked() || uip_rexmit());
|
|
* ...
|
|
*/
|
|
#define DEBUGLOGIC 0
|
|
#if DEBUGLOGIC
|
|
struct httpd_state *sg;
|
|
#define uip_mss(...) sizeof(uip_aligned_buf)
|
|
#define uip_appdata (char *) &uip_aligned_buf
|
|
#endif
|
|
|
|
#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 webserver_log_file(...)
|
|
|
|
#define ISO_nl 0x0a
|
|
#define ISO_space 0x20
|
|
#define ISO_period 0x2e
|
|
#define ISO_slash 0x2f
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static unsigned short
|
|
generate_string(void *sstr)
|
|
{
|
|
uint8_t slen=strlen((char *)sstr);
|
|
memcpy(uip_appdata, (char *)sstr, slen);
|
|
|
|
#if DEBUGLOGIC
|
|
return 0;
|
|
#else
|
|
return slen;
|
|
#endif
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static unsigned short
|
|
generate_string_P(void *sstr)
|
|
{
|
|
uint8_t slen=strlen_P((char *)sstr);
|
|
memcpy_P(uip_appdata, (char *)sstr, slen);
|
|
|
|
#if DEBUGLOGIC
|
|
return 0;
|
|
#else
|
|
return slen;
|
|
#endif
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
#if FIND_THE_SCRIPT
|
|
/* Needed if more than one script is implemented.
|
|
* The generate_routes RPL page is hard coded at present
|
|
*/
|
|
static
|
|
PT_THREAD(send_string_P(struct httpd_state *s, char *str))
|
|
{
|
|
PSOCK_BEGIN(&s->sout);
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string_P, str);
|
|
PSOCK_END(&s->sout);
|
|
}
|
|
#endif
|
|
/*---------------------------------------------------------------------------*/
|
|
char http_content_type_html[] PROGMEM = "Content-type: text/html\r\n\r\n";
|
|
static
|
|
PT_THREAD(send_headers(struct httpd_state *s, char *statushdr))
|
|
{
|
|
PSOCK_BEGIN(&s->sout);
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string_P, statushdr);
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string_P, http_content_type_html);
|
|
PSOCK_END(&s->sout);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
const char http_index_html[] PROGMEM = "/index.html";
|
|
const char http_referer[] PROGMEM = "Referer:";
|
|
const char http_get[] PROGMEM = "GET ";
|
|
static
|
|
PT_THREAD(handle_input(struct httpd_state *s))
|
|
{
|
|
PSOCK_BEGIN(&s->sin);
|
|
|
|
PSOCK_READTO(&s->sin, ISO_space);
|
|
|
|
if(strncmp_P(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
|
|
bomb
|
|
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_P(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(strncmp_P(s->inputbuf, http_referer, 8) == 0) {
|
|
// s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0;
|
|
// webserver_log(s->inputbuf);
|
|
// }
|
|
}
|
|
|
|
PSOCK_END(&s->sin);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
httpd_init(void)
|
|
{
|
|
tcp_listen(UIP_HTONS(80));
|
|
memb_init(&conns);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Only one single web request at time */
|
|
static char buf[64];
|
|
static uint8_t blen;
|
|
#define ADD(FORMAT,args...) do { \
|
|
blen += snprintf_P(&buf[blen], sizeof(buf) - blen, PSTR(FORMAT),##args); \
|
|
} while(0)
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
ipaddr_add(const uip_ipaddr_t *addr)
|
|
{
|
|
uint16_t a;
|
|
int i, f;
|
|
for(i = 0, f = 0; i < sizeof(uip_ipaddr_t); i += 2) {
|
|
a = (addr->u8[i] << 8) + addr->u8[i + 1];
|
|
if(a == 0 && f >= 0) {
|
|
if(f++ == 0 && sizeof(buf) - blen >= 2) {
|
|
buf[blen++] = ':';
|
|
buf[blen++] = ':';
|
|
}
|
|
} else {
|
|
if(f > 0) {
|
|
f = -1;
|
|
} else if(i > 0 && blen < sizeof(buf)) {
|
|
buf[blen++] = ':';
|
|
}
|
|
ADD("%x", a);
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
char TOP[] PROGMEM = "<html><head><title>ContikiRPL(Jackdaw)</title></head><body>\n";
|
|
char BOTTOM[] PROGMEM = "</body></html>\n";
|
|
#if UIP_CONF_IPV6
|
|
extern uip_ds6_nbr_t uip_ds6_nbr_cache[];
|
|
extern uip_ds6_route_t uip_ds6_routing_table[];
|
|
#endif
|
|
|
|
static
|
|
PT_THREAD(generate_routes(struct httpd_state *s))
|
|
{
|
|
static int i;
|
|
PSOCK_BEGIN(&s->sout);
|
|
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string_P, TOP);
|
|
|
|
blen = 0;
|
|
ADD("<h2>Neighbors</h2>");
|
|
#if UIP_CONF_IPV6
|
|
for(i = 0; i < UIP_DS6_NBR_NB; i++) {
|
|
if(uip_ds6_nbr_cache[i].isused) {
|
|
ipaddr_add(&uip_ds6_nbr_cache[i].ipaddr);
|
|
ADD("<br>\n");
|
|
if(blen > sizeof(buf) - 45) {
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string, buf);
|
|
blen = 0;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ADD("<h2>Routes</h2>");
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string, buf);
|
|
blen = 0;
|
|
#if UIP_CONF_IPV6
|
|
for(i = 0; i < UIP_DS6_ROUTE_NB; i++) {
|
|
if(uip_ds6_routing_table[i].isused) {
|
|
ipaddr_add(&uip_ds6_routing_table[i].ipaddr);
|
|
ADD("/%u (via ", uip_ds6_routing_table[i].length);
|
|
ipaddr_add(&uip_ds6_routing_table[i].nexthop);
|
|
if(uip_ds6_routing_table[i].state.lifetime < 600) {
|
|
ADD(") %lus<br>\n", uip_ds6_routing_table[i].state.lifetime);
|
|
} else {
|
|
ADD(")<br>\n");
|
|
}
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string, buf);
|
|
blen = 0;
|
|
}
|
|
}
|
|
#endif
|
|
if(blen > 0) {
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string, buf);
|
|
blen = 0;
|
|
}
|
|
|
|
PSOCK_GENERATOR_SEND(&s->sout, generate_string_P, BOTTOM);
|
|
|
|
PSOCK_END(&s->sout);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
httpd_simple_script_t
|
|
httpd_simple_get_script(const char *name)
|
|
{
|
|
return generate_routes;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
char http_header_200[] PROGMEM = "HTTP/1.0 200 OK\r\nServer: Jackdaw\r\nConnection: close\r\n";
|
|
char http_header_404[] PROGMEM = "HTTP/1.0 404 Not found\r\nServer: Jackdaw\r\nConnection: close\r\n";
|
|
char NOT_FOUND[] PROGMEM = "<html><body bgcolor=\"white\"><center><h1>404 - file not found</h1></center></body></html>";
|
|
static
|
|
PT_THREAD(handle_output(struct httpd_state *s))
|
|
{
|
|
PT_BEGIN(&s->outputpt);
|
|
|
|
#if DEBUGLOGIC
|
|
strcpy_P(s->filename,PSTR("/x"));
|
|
#endif
|
|
#if FIND_THE_SCRIPT
|
|
s->script = httpd_simple_get_script(&s->filename[1]);
|
|
if(s->script == NULL) {
|
|
printf_P(PSTR("not found!"));
|
|
strcpy_P(s->filename, PSTR("/notfound.html"));
|
|
|
|
PT_WAIT_THREAD(&s->outputpt,
|
|
send_headers(s, http_header_404));
|
|
PT_WAIT_THREAD(&s->outputpt,
|
|
send_string_P(s, NOT_FOUND));
|
|
uip_close();
|
|
|
|
PT_EXIT(&s->outputpt);
|
|
} else {
|
|
#else
|
|
s->script = generate_routes;
|
|
if (1) {
|
|
#endif
|
|
|
|
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);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
handle_connection(struct httpd_state *s)
|
|
{
|
|
#if DEBUGLOGIC
|
|
handle_output(s);
|
|
#else
|
|
handle_input(s);
|
|
if(s->state == STATE_OUTPUT) {
|
|
handle_output(s);
|
|
}
|
|
#endif
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
httpd_appcall(void *state)
|
|
{
|
|
#if DEBUGLOGIC
|
|
struct httpd_state *s; //Enter here for debugging with output directed to TCPBUF
|
|
s = sg = (struct httpd_state *)memb_alloc(&conns); //put ram watch on sg
|
|
if (1) {
|
|
#else
|
|
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;
|
|
}
|
|
#endif
|
|
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();
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS(httpd_process, "httpd");
|
|
PROCESS_THREAD(httpd_process, ev, data)
|
|
{
|
|
PROCESS_BEGIN();
|
|
|
|
httpd_init();
|
|
|
|
while(1) {
|
|
PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
|
|
httpd_appcall(data);
|
|
}
|
|
|
|
PROCESS_END();
|
|
}
|
|
|