FreeRTOS/Common/ethernet/uIP/uip-1.0/apps/webserver/httpd-cgi.c

   1 /**
   2  * \addtogroup httpd
   3  * @{
   4  */
   5
   6 /**
   7  * \file
   8  *         Web server script interface
   9  * \author
  10  *         Adam Dunkels <adam@sics.se>
  11  *
  12  */
  13
  14 /*
  15  * Copyright (c) 2001-2006, Adam Dunkels.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  * 3. The name of the author may not be used to endorse or promote
  27  *    products derived from this software without specific prior
  28  *    written permission.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  31  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  32  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  34  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  36  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  37  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  38  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  39  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  40  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  41  *
  42  * This file is part of the uIP TCP/IP stack.
  43  *
  44  * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $
  45  *
  46  */
  47
  48 #include "uip.h"
  49 #include "psock.h"
  50 #include "httpd.h"
  51 #include "httpd-cgi.h"
  52 #include "httpd-fs.h"
  53
  54 #include <stdio.h>
  55 #include <string.h>
  56
  57 HTTPD_CGI_CALL(file, "file-stats", file_stats);
  58 HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
  59 HTTPD_CGI_CALL(net, "net-stats", net_stats);
  60
  61 static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL };
  62
  63 /*---------------------------------------------------------------------------*/
  64 static
  65 PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
  66 {
  67   PSOCK_BEGIN(&s->sout);
  68   PSOCK_END(&s->sout);
  69 }
  70 /*---------------------------------------------------------------------------*/
  71 httpd_cgifunction
  72 httpd_cgi(char *name)
  73 {
  74   const struct httpd_cgi_call **f;
  75
  76   /* Find the matching name in the table, return the function. */
  77   for(f = calls; *f != NULL; ++f) {
  78     if(strncmp((*f)->name, name, strlen((*f)->name)) == 0) {
  79       return (*f)->function;
  80     }
  81   }
  82   return nullfunction;
  83 }
  84 /*---------------------------------------------------------------------------*/
  85 static unsigned short
  86 generate_file_stats(void *arg)
  87 {
  88   char *f = (char *)arg;
  89   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f));
  90 }
  91 /*---------------------------------------------------------------------------*/
  92 static
  93 PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
  94 {
  95   PSOCK_BEGIN(&s->sout);
  96
  97   PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
  98
  99   PSOCK_END(&s->sout);
 100 }
 101 /*---------------------------------------------------------------------------*/
 102 static const char closed[] =   /*  "CLOSED",*/
 103 {0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
 104 static const char syn_rcvd[] = /*  "SYN-RCVD",*/
 105 {0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
 106  0x44,  0};
 107 static const char syn_sent[] = /*  "SYN-SENT",*/
 108 {0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
 109  0x54,  0};
 110 static const char established[] = /*  "ESTABLISHED",*/
 111 {0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
 112  0x45, 0x44, 0};
 113 static const char fin_wait_1[] = /*  "FIN-WAIT-1",*/
 114 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
 115  0x54, 0x2d, 0x31, 0};
 116 static const char fin_wait_2[] = /*  "FIN-WAIT-2",*/
 117 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
 118  0x54, 0x2d, 0x32, 0};
 119 static const char closing[] = /*  "CLOSING",*/
 120 {0x43, 0x4c, 0x4f, 0x53, 0x49,
 121  0x4e, 0x47, 0};
 122 static const char time_wait[] = /*  "TIME-WAIT,"*/
 123 {0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
 124  0x49, 0x54, 0};
 125 static const char last_ack[] = /*  "LAST-ACK"*/
 126 {0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
 127  0x4b, 0};
 128
 129 static const char *states[] = {
 130   closed,
 131   syn_rcvd,
 132   syn_sent,
 133   established,
 134   fin_wait_1,
 135   fin_wait_2,
 136   closing,
 137   time_wait,
 138   last_ack};
 139
 140
 141 static unsigned short
 142 generate_tcp_stats(void *arg)
 143 {
 144   struct uip_conn *conn;
 145   struct httpd_state *s = (struct httpd_state *)arg;
 146
 147   conn = &uip_conns[s->count];
 148   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
 149                  "<tr><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
 150                  htons(conn->lport),
 151                  htons(conn->ripaddr[0]) >> 8,
 152                  htons(conn->ripaddr[0]) & 0xff,
 153                  htons(conn->ripaddr[1]) >> 8,
 154                  htons(conn->ripaddr[1]) & 0xff,
 155                  htons(conn->rport),
 156                  states[conn->tcpstateflags & UIP_TS_MASK],
 157                  conn->nrtx,
 158                  conn->timer,
 159                  (uip_outstanding(conn))? '*':' ',
 160                  (uip_stopped(conn))? '!':' ');
 161 }
 162 /*---------------------------------------------------------------------------*/
 163 static
 164 PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
 165 {
 166
 167   PSOCK_BEGIN(&s->sout);
 168
 169   for(s->count = 0; s->count < UIP_CONNS; ++s->count) {
 170     if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
 171       PSOCK_GENERATOR_SEND(&s->sout, generate_tcp_stats, s);
 172     }
 173   }
 174
 175   PSOCK_END(&s->sout);
 176 }
 177 /*---------------------------------------------------------------------------*/
 178 static unsigned short
 179 generate_net_stats(void *arg)
 180 {
 181   struct httpd_state *s = (struct httpd_state *)arg;
 182   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
 183                   "%5u\n", ((uip_stats_t *)&uip_stat)[s->count]);
 184 }
 185
 186 static
 187 PT_THREAD(net_stats(struct httpd_state *s, char *ptr))
 188 {
 189   PSOCK_BEGIN(&s->sout);
 190
 191 #if UIP_STATISTICS
 192
 193   for(s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t);
 194       ++s->count) {
 195     PSOCK_GENERATOR_SEND(&s->sout, generate_net_stats, s);
 196   }
 197
 198 #endif /* UIP_STATISTICS */
 199
 200   PSOCK_END(&s->sout);
 201 }
 202 /*---------------------------------------------------------------------------*/
 203 /** @} */