/* * 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 * Niclas Finne * Joakim Eriksson */ #include #include #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_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 = "" "" "

404 - file not found

" "" "" ""; /*---------------------------------------------------------------------------*/ 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 */ } /*---------------------------------------------------------------------------*/