Contiki 2.6
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00001 /* 00002 * Copyright (c) 2004, Adam Dunkels. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * Author: Adam Dunkels <adam@sics.se> 00032 * 00033 * $Id: httpd-cfs.c,v 1.2 2010/10/19 18:29:05 adamdunkels Exp $ 00034 */ 00035 00036 #include <string.h> 00037 00038 #include "contiki-net.h" 00039 #include "cfs/cfs.h" 00040 00041 #include "webserver.h" 00042 #include "libconio_arch-small.h" 00043 00044 #include "httpd-cfs.h" 00045 00046 #define STATE_WAITING 0 00047 #define STATE_OUTPUT 1 00048 00049 #define SEND_STRING(s, str) PSOCK_SEND(s, str, strlen(str)) 00050 MEMB(conns, struct httpd_state, 2); 00051 00052 /*---------------------------------------------------------------------------*/ 00053 static 00054 PT_THREAD(send_file(struct httpd_state *s)) 00055 { 00056 PSOCK_BEGIN(&s->sout); 00057 00058 do { 00059 /* Read data from file system into buffer */ 00060 s->len = cfs_read(s->fd, s->outputbuf, sizeof(s->outputbuf)); 00061 00062 /* If there is data in the buffer, send it */ 00063 if(s->len > 0) { 00064 PSOCK_SEND(&s->sout, s->outputbuf, s->len); 00065 } else { 00066 break; 00067 } 00068 } while(s->len > 0); 00069 00070 PSOCK_END(&s->sout); 00071 } 00072 /*---------------------------------------------------------------------------*/ 00073 static 00074 PT_THREAD(send_headers(struct httpd_state *s, char *statushdr)) 00075 { 00076 char *ptr; 00077 00078 PSOCK_BEGIN(&s->sout); 00079 00080 SEND_STRING(&s->sout, statushdr); 00081 SEND_STRING(&s->sout, "Server: " CONTIKI_VERSION_STRING "\r\n"); 00082 00083 ptr = strrchr(s->filename, '.'); 00084 if(ptr == NULL) { 00085 SEND_STRING(&s->sout, "Content-type: text/plain\r\n\r\n"); 00086 } else if(strncmp(".html", ptr, 5) == 0) { 00087 SEND_STRING(&s->sout, "Content-type: text/html\r\n\r\n"); 00088 } else if(strncmp(".css", ptr, 4) == 0) { 00089 SEND_STRING(&s->sout, "Content-type: text/css\r\n\r\n"); 00090 } else if(strncmp(".png", ptr, 4) == 0) { 00091 SEND_STRING(&s->sout, "Content-type: image/png\r\n\r\n"); 00092 } else if(strncmp(".jpg", ptr, 4) == 0) { 00093 SEND_STRING(&s->sout, "Content-type: image/jpeg\r\n\r\n"); 00094 } else { 00095 SEND_STRING(&s->sout, "Content-type: application/octet-stream\r\n\r\n"); 00096 } 00097 PSOCK_END(&s->sout); 00098 } 00099 /*---------------------------------------------------------------------------*/ 00100 static 00101 PT_THREAD(handle_output(struct httpd_state *s)) 00102 { 00103 PT_BEGIN(&s->outputpt); 00104 00105 s->fd = cfs_open(s->filename, CFS_READ); 00106 if(s->fd < 0) { 00107 s->fd = cfs_open("404.html", CFS_READ); 00108 if(s->fd < 0) { 00109 uip_abort(); 00110 PT_EXIT(&s->outputpt); 00111 } 00112 PT_WAIT_THREAD(&s->outputpt, 00113 send_headers(s, "HTTP/1.0 404 Not found\r\n")); 00114 PT_WAIT_THREAD(&s->outputpt, 00115 send_file(s)); 00116 } else { 00117 PT_WAIT_THREAD(&s->outputpt, 00118 send_headers(s, "HTTP/1.0 200 OK\r\n")); 00119 PT_WAIT_THREAD(&s->outputpt, 00120 send_file(s)); 00121 cfs_close(s->fd); 00122 } 00123 PSOCK_CLOSE(&s->sout); 00124 PT_END(&s->outputpt); 00125 } 00126 /*---------------------------------------------------------------------------*/ 00127 static 00128 PT_THREAD(handle_input(struct httpd_state *s)) 00129 { 00130 PSOCK_BEGIN(&s->sin); 00131 00132 PSOCK_READTO(&s->sin, ' '); 00133 00134 if(strncmp(s->inputbuf, "GET ", 4) != 0) { 00135 PSOCK_CLOSE_EXIT(&s->sin); 00136 } 00137 PSOCK_READTO(&s->sin, ' '); 00138 00139 if(s->inputbuf[0] != '/') { 00140 PSOCK_CLOSE_EXIT(&s->sin); 00141 } 00142 00143 if(s->inputbuf[1] == ' ') { 00144 strncpy(s->filename, "index.html", sizeof(s->filename)); 00145 } else { 00146 s->inputbuf[PSOCK_DATALEN(&s->sin) - 1] = 0; 00147 strncpy(s->filename, &s->inputbuf[1], sizeof(s->filename)); 00148 } 00149 00150 // webserver_log_file(&uip_conn->ripaddr, s->filename); 00151 libputs_arch(s->filename); 00152 s->state = STATE_OUTPUT; 00153 00154 while(1) { 00155 PSOCK_READTO(&s->sin, '\n'); 00156 00157 if(strncmp(s->inputbuf, "Referer:", 8) == 0) { 00158 s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0; 00159 libputs_arch(&s->inputbuf[9]); 00160 // webserver_log(&s->inputbuf[9]); 00161 } 00162 } 00163 00164 PSOCK_END(&s->sin); 00165 } 00166 /*---------------------------------------------------------------------------*/ 00167 static void 00168 handle_connection(struct httpd_state *s) 00169 { 00170 handle_input(s); 00171 if(s->state == STATE_OUTPUT) { 00172 handle_output(s); 00173 } 00174 } 00175 /*---------------------------------------------------------------------------*/ 00176 void 00177 httpd_appcall(void *state) 00178 { 00179 struct httpd_state *s = (struct httpd_state *)state; 00180 00181 if(uip_closed() || uip_aborted() || uip_timedout()) { 00182 if(s != NULL) { 00183 memb_free(&conns, s); 00184 } 00185 } else if(uip_connected()) { 00186 s = (struct httpd_state *)memb_alloc(&conns); 00187 if(s == NULL) { 00188 uip_abort(); 00189 return; 00190 } 00191 tcp_markconn(uip_conn, s); 00192 PSOCK_INIT(&s->sin, s->inputbuf, sizeof(s->inputbuf) - 1); 00193 PSOCK_INIT(&s->sout, s->inputbuf, sizeof(s->inputbuf) - 1); 00194 PT_INIT(&s->outputpt); 00195 s->state = STATE_WAITING; 00196 timer_set(&s->timer, CLOCK_SECOND * 10); 00197 handle_connection(s); 00198 } else if(s != NULL) { 00199 if(uip_poll()) { 00200 if(timer_expired(&s->timer)) { 00201 uip_abort(); 00202 } 00203 } else { 00204 timer_reset(&s->timer); 00205 } 00206 handle_connection(s); 00207 } else { 00208 uip_abort(); 00209 } 00210 } 00211 /*---------------------------------------------------------------------------*/ 00212 void 00213 httpd_init(void) 00214 { 00215 tcp_listen(UIP_HTONS(80)); 00216 memb_init(&conns); 00217 } 00218 /*---------------------------------------------------------------------------*/