8 * Web server script interface
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10 * Adam Dunkels <adam@sics.se>
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15 * Copyright (c) 2001-2006, Adam Dunkels.
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16 * All rights reserved.
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18 * Redistribution and use in source and binary forms, with or without
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19 * modification, are permitted provided that the following conditions
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21 * 1. Redistributions of source code must retain the above copyright
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22 * notice, this list of conditions and the following disclaimer.
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23 * 2. Redistributions in binary form must reproduce the above copyright
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24 * notice, this list of conditions and the following disclaimer in the
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25 * documentation and/or other materials provided with the distribution.
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26 * 3. The name of the author may not be used to endorse or promote
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27 * products derived from this software without specific prior
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28 * written permission.
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30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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31 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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32 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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33 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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34 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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36 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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38 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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39 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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40 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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42 * This file is part of the uIP TCP/IP stack.
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44 * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $
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47 #include "net/uip.h"
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48 #include "net/psock.h"
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50 #include "httpd-cgi.h"
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51 #include "httpd-fs.h"
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56 HTTPD_CGI_CALL( file, "file-stats", file_stats );
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57 HTTPD_CGI_CALL( tcp, "tcp-connections", tcp_stats );
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58 HTTPD_CGI_CALL( net, "net-stats", net_stats );
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60 static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL };
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62 /*---------------------------------------------------------------------------*/
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63 static PT_THREAD( nullfunction ( struct httpd_state *s, char *ptr ) )
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65 PSOCK_BEGIN( &s->sout );
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66 PSOCK_END( &s->sout );
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69 /*---------------------------------------------------------------------------*/
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70 httpd_cgifunction httpd_cgi( char *name )
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72 const struct httpd_cgi_call **f;
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74 /* Find the matching name in the table, return the function. */
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75 for( f = calls; *f != NULL; ++f )
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77 if( strncmp((*f)->name, name, strlen((*f)->name)) == 0 )
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79 return( *f )->function;
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83 return nullfunction;
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86 /*---------------------------------------------------------------------------*/
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87 static unsigned short generate_file_stats( void *arg )
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89 char *f = ( char * ) arg;
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90 return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f) );
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93 /*---------------------------------------------------------------------------*/
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94 static PT_THREAD( file_stats ( struct httpd_state *s, char *ptr ) )
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96 PSOCK_BEGIN( &s->sout );
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98 PSOCK_GENERATOR_SEND( &s->sout, generate_file_stats, strchr(ptr, ' ') + 1 );
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100 PSOCK_END( &s->sout );
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103 /*---------------------------------------------------------------------------*/
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104 static const char closed[] = /* "CLOSED",*/ { 0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0 };
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105 static const char syn_rcvd[] = /* "SYN-RCVD",*/ { 0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56, 0x44, 0 };
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106 static const char syn_sent[] = /* "SYN-SENT",*/ { 0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e, 0x54, 0 };
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107 static const char established[] = /* "ESTABLISHED",*/ { 0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48, 0x45, 0x44, 0 };
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108 static const char fin_wait_1[] = /* "FIN-WAIT-1",*/ { 0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, 0x54, 0x2d, 0x31, 0 };
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109 static const char fin_wait_2[] = /* "FIN-WAIT-2",*/ { 0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, 0x54, 0x2d, 0x32, 0 };
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110 static const char closing[] = /* "CLOSING",*/ { 0x43, 0x4c, 0x4f, 0x53, 0x49, 0x4e, 0x47, 0 };
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111 static const char time_wait[] = /* "TIME-WAIT,"*/ { 0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41, 0x49, 0x54, 0 };
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112 static const char last_ack[] = /* "LAST-ACK"*/ { 0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43, 0x4b, 0 };
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114 static const char *states[] = { closed, syn_rcvd, syn_sent, established, fin_wait_1, fin_wait_2, closing, time_wait, last_ack };
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116 static unsigned short generate_tcp_stats( void *arg )
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118 struct uip_conn *conn;
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119 struct httpd_state *s = ( struct httpd_state * ) arg;
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121 conn = &uip_conns[s->count];
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122 return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE,
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123 "<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", htons(conn->lport),
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124 htons(conn->ripaddr[0]) >> 8, htons(conn->ripaddr[0]) & 0xff, htons(conn->ripaddr[1]) >> 8,
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125 htons(conn->ripaddr[1]) & 0xff, htons(conn->rport), states[conn->tcpstateflags & UIP_TS_MASK], conn->nrtx, conn->timer,
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126 (uip_outstanding(conn)) ? '*' : ' ', (uip_stopped(conn)) ? '!' : ' ' );
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129 /*---------------------------------------------------------------------------*/
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130 static PT_THREAD( tcp_stats ( struct httpd_state *s, char *ptr ) )
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132 PSOCK_BEGIN( &s->sout );
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134 for( s->count = 0; s->count < UIP_CONNS; ++s->count )
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136 if( (uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED )
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138 PSOCK_GENERATOR_SEND( &s->sout, generate_tcp_stats, s );
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142 PSOCK_END( &s->sout );
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145 /*---------------------------------------------------------------------------*/
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146 static unsigned short generate_net_stats( void *arg )
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148 struct httpd_state *s = ( struct httpd_state * ) arg;
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149 return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE, "%5u\n", (( uip_stats_t * ) &uip_stat)[s->count] );
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152 static PT_THREAD( net_stats ( struct httpd_state *s, char *ptr ) )
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154 PSOCK_BEGIN( &s->sout );
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157 for( s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t); ++s->count )
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159 PSOCK_GENERATOR_SEND( &s->sout, generate_net_stats, s );
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162 #endif /* UIP_STATISTICS */
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164 PSOCK_END( &s->sout );
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167 /*---------------------------------------------------------------------------*/
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