8 * HTTP server script language C functions file.
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9 * \author Adam Dunkels <adam@dunkels.com>
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11 * This file contains functions that are called by the web server
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12 * scripts. The functions takes one argument, and the return value is
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13 * interpreted as follows. A zero means that the function did not
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14 * complete and should be invoked for the next packet as well. A
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15 * non-zero value indicates that the function has completed and that
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16 * the web server should move along to the next script line.
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21 * Copyright (c) 2001, Adam Dunkels.
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22 * All rights reserved.
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24 * Redistribution and use in source and binary forms, with or without
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25 * modification, are permitted provided that the following conditions
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27 * 1. Redistributions of source code must retain the above copyright
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28 * notice, this list of conditions and the following disclaimer.
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29 * 2. Redistributions in binary form must reproduce the above copyright
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30 * notice, this list of conditions and the following disclaimer in the
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31 * documentation and/or other materials provided with the distribution.
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32 * 3. The name of the author may not be used to endorse or promote
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33 * products derived from this software without specific prior
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34 * written permission.
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36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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37 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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38 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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39 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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40 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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42 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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43 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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44 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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45 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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46 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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48 * This file is part of the uIP TCP/IP stack.
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50 * $Id: cgi.c,v 1.23.2.4 2003/10/07 13:22:27 adam Exp $
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62 static u8_t print_stats(u8_t next);
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63 static u8_t file_stats(u8_t next);
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64 static u8_t tcp_stats(u8_t next);
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66 cgifunction cgitab[] = {
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67 print_stats, /* CGI function "a" */
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68 file_stats, /* CGI function "b" */
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69 tcp_stats /* CGI function "c" */
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72 static const char closed[] = /* "CLOSED",*/
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73 {0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
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74 static const char syn_rcvd[] = /* "SYN-RCVD",*/
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75 {0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
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77 static const char syn_sent[] = /* "SYN-SENT",*/
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78 {0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
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80 static const char established[] = /* "ESTABLISHED",*/
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81 {0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
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83 static const char fin_wait_1[] = /* "FIN-WAIT-1",*/
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84 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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85 0x54, 0x2d, 0x31, 0};
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86 static const char fin_wait_2[] = /* "FIN-WAIT-2",*/
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87 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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88 0x54, 0x2d, 0x32, 0};
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89 static const char closing[] = /* "CLOSING",*/
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90 {0x43, 0x4c, 0x4f, 0x53, 0x49,
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92 static const char time_wait[] = /* "TIME-WAIT,"*/
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93 {0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
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95 static const char last_ack[] = /* "LAST-ACK"*/
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96 {0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
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99 static const char *states[] = {
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111 /*-----------------------------------------------------------------------------------*/
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114 * Prints out a part of the uIP statistics. The statistics data is
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115 * written into the uip_appdata buffer. It overwrites any incoming
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119 print_stats(u8_t next)
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127 /* If our last data has been acknowledged, we move on the next
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128 chunk of statistics. */
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129 hs->count = hs->count + 4;
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130 if(hs->count >= sizeof(struct uip_stats)/sizeof(u16_t)) {
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131 /* We have printed out all statistics, so we return 1 to
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132 indicate that we are done. */
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137 /* Write part of the statistics into the uip_appdata buffer. */
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138 databytes = (u16_t *)&uip_stat + hs->count;
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139 buf = (u8_t *)uip_appdata;
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143 while (i < sizeof(struct uip_stats)/sizeof(u16_t) && --j > 0) {
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144 sprintf((char *)buf, "%5u\r\n", *databytes);
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150 /* Send the data. */
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151 uip_send(uip_appdata, buf - uip_appdata);
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156 #endif /* UIP_STATISTICS */
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158 /*-----------------------------------------------------------------------------------*/
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160 file_stats(u8_t next)
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162 /* We use sprintf() to print the number of file accesses to a
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163 particular file (given as an argument to the function in the
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164 script). We then use uip_send() to actually send the data. */
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168 uip_send(uip_appdata, sprintf((char *)uip_appdata, "%5u", fs_count(&hs->script[4])));
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171 /*-----------------------------------------------------------------------------------*/
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173 tcp_stats(u8_t next)
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175 struct uip_conn *conn;
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178 /* If the previously sent data has been acknowledged, we move
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179 forward one connection. */
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180 if(++hs->count == UIP_CONNS) {
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181 /* If all connections has been printed out, we are done and
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187 conn = &uip_conns[hs->count];
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188 if((conn->tcpstateflags & TS_MASK) == CLOSED) {
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189 uip_send(uip_appdata, sprintf((char *)uip_appdata,
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190 "<tr align=\"center\"><td>-</td><td>-</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
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193 (uip_outstanding(conn))? '*':' ',
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194 (uip_stopped(conn))? '!':' '));
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196 uip_send(uip_appdata, sprintf((char *)uip_appdata,
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197 "<tr align=\"center\"><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
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198 htons(conn->ripaddr[0]) >> 8,
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199 htons(conn->ripaddr[0]) & 0xff,
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200 htons(conn->ripaddr[1]) >> 8,
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201 htons(conn->ripaddr[1]) & 0xff,
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202 htons(conn->rport),
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203 states[conn->tcpstateflags & TS_MASK],
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206 (uip_outstanding(conn))? '*':' ',
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207 (uip_stopped(conn))? '!':' '));
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211 /*-----------------------------------------------------------------------------------*/
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