uIP 1.0: apps/webserver/httpd-cgi.c Source File

00001 /**
+00002  * \addtogroup httpd
+00003  * @{
+00004  */
+00005 
+00006 /**
+00007  * \file
+00008  *         Web server script interface
+00009  * \author
+00010  *         Adam Dunkels <adam@sics.se>
+00011  *
+00012  */
+00013 
+00014 /*
+00015  * Copyright (c) 2001-2006, Adam Dunkels.
+00016  * All rights reserved.
+00017  *
+00018  * Redistribution and use in source and binary forms, with or without
+00019  * modification, are permitted provided that the following conditions
+00020  * are met:
+00021  * 1. Redistributions of source code must retain the above copyright
+00022  *    notice, this list of conditions and the following disclaimer.
+00023  * 2. Redistributions in binary form must reproduce the above copyright
+00024  *    notice, this list of conditions and the following disclaimer in the
+00025  *    documentation and/or other materials provided with the distribution.
+00026  * 3. The name of the author may not be used to endorse or promote
+00027  *    products derived from this software without specific prior
+00028  *    written permission.
+00029  *
+00030  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+00031  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+00032  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+00033  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+00034  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+00035  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+00036  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+00037  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+00038  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+00039  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+00040  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+00041  *
+00042  * This file is part of the uIP TCP/IP stack.
+00043  *
+00044  * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $
+00045  *
+00046  */
+00047 
+00048 #include "uip.h"
+00049 #include "psock.h"
+00050 #include "httpd.h"
+00051 #include "httpd-cgi.h"
+00052 #include "httpd-fs.h"
+00053 
+00054 #include <stdio.h>
+00055 #include <string.h>
+00056 
+00057 HTTPD_CGI_CALL(file, "file-stats", file_stats);
+00058 HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
+00059 HTTPD_CGI_CALL(net, "net-stats", net_stats);
+00060 
+00061 static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL };
+00062 
+00063 /*---------------------------------------------------------------------------*/
+00064 static
+00065 PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
+00066 {
+00067   PSOCK_BEGIN(&s->sout);
+00068   PSOCK_END(&s->sout);
+00069 }
+00070 /*---------------------------------------------------------------------------*/
+00071 httpd_cgifunction
+00072 httpd_cgi(char *name)
+00073 {
+00074   const struct httpd_cgi_call **f;
+00075 
+00076   /* Find the matching name in the table, return the function. */
+00077   for(f = calls; *f != NULL; ++f) {
+00078     if(strncmp((*f)->name, name, strlen((*f)->name)) == 0) {
+00079       return (*f)->function;
+00080     }
+00081   }
+00082   return nullfunction;
+00083 }
+00084 /*---------------------------------------------------------------------------*/
+00085 static unsigned short
+00086 generate_file_stats(void *arg)
+00087 {
+00088   char *f = (char *)arg;
+00089   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f));
+00090 }
+00091 /*---------------------------------------------------------------------------*/
+00092 static
+00093 PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
+00094 {
+00095   PSOCK_BEGIN(&s->sout);
+00096 
+00097   PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
+00098   
+00099   PSOCK_END(&s->sout);
+00100 }
+00101 /*---------------------------------------------------------------------------*/
+00102 static const char closed[] =   /*  "CLOSED",*/
+00103 {0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
+00104 static const char syn_rcvd[] = /*  "SYN-RCVD",*/
+00105 {0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
+00106  0x44,  0};
+00107 static const char syn_sent[] = /*  "SYN-SENT",*/
+00108 {0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
+00109  0x54,  0};
+00110 static const char established[] = /*  "ESTABLISHED",*/
+00111 {0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
+00112  0x45, 0x44, 0};
+00113 static const char fin_wait_1[] = /*  "FIN-WAIT-1",*/
+00114 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
+00115  0x54, 0x2d, 0x31, 0};
+00116 static const char fin_wait_2[] = /*  "FIN-WAIT-2",*/
+00117 {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
+00118  0x54, 0x2d, 0x32, 0};
+00119 static const char closing[] = /*  "CLOSING",*/
+00120 {0x43, 0x4c, 0x4f, 0x53, 0x49,
+00121  0x4e, 0x47, 0};
+00122 static const char time_wait[] = /*  "TIME-WAIT,"*/
+00123 {0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
+00124  0x49, 0x54, 0};
+00125 static const char last_ack[] = /*  "LAST-ACK"*/
+00126 {0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
+00127  0x4b, 0};
+00128 
+00129 static const char *states[] = {
+00130   closed,
+00131   syn_rcvd,
+00132   syn_sent,
+00133   established,
+00134   fin_wait_1,
+00135   fin_wait_2,
+00136   closing,
+00137   time_wait,
+00138   last_ack};
+00139   
+00140 
+00141 static unsigned short
+00142 generate_tcp_stats(void *arg)
+00143 {
+00144   struct uip_conn *conn;
+00145   struct httpd_state *s = (struct httpd_state *)arg;
+00146     
+00147   conn = &uip_conns[s->count];
+00148   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
+00149                  "<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",
+00150                  htons(conn->lport),
+00151                  htons(conn->ripaddr[0]) >> 8,
+00152                  htons(conn->ripaddr[0]) & 0xff,
+00153                  htons(conn->ripaddr[1]) >> 8,
+00154                  htons(conn->ripaddr[1]) & 0xff,
+00155                  htons(conn->rport),
+00156                  states[conn->tcpstateflags & UIP_TS_MASK],
+00157                  conn->nrtx,
+00158                  conn->timer,
+00159                  (uip_outstanding(conn))? '*':' ',
+00160                  (uip_stopped(conn))? '!':' ');
+00161 }
+00162 /*---------------------------------------------------------------------------*/
+00163 static
+00164 PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
+00165 {
+00166   
+00167   PSOCK_BEGIN(&s->sout);
+00168 
+00169   for(s->count = 0; s->count < UIP_CONNS; ++s->count) {
+00170     if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
+00171       PSOCK_GENERATOR_SEND(&s->sout, generate_tcp_stats, s);
+00172     }
+00173   }
+00174 
+00175   PSOCK_END(&s->sout);
+00176 }
+00177 /*---------------------------------------------------------------------------*/
+00178 static unsigned short
+00179 generate_net_stats(void *arg)
+00180 {
+00181   struct httpd_state *s = (struct httpd_state *)arg;
+00182   return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
+00183                   "%5u\n", ((uip_stats_t *)&uip_stat)[s->count]);
+00184 }
+00185 
+00186 static
+00187 PT_THREAD(net_stats(struct httpd_state *s, char *ptr))
+00188 {
+00189   PSOCK_BEGIN(&s->sout);
+00190 
+00191 #if UIP_STATISTICS
+00192 
+00193   for(s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t);
+00194       ++s->count) {
+00195     PSOCK_GENERATOR_SEND(&s->sout, generate_net_stats, s);
+00196   }
+00197   
+00198 #endif /* UIP_STATISTICS */
+00199   
+00200   PSOCK_END(&s->sout);
+00201 }
+00202 /*---------------------------------------------------------------------------*/
+00203 /** @} */
+