1 /**
2 * \addtogroup httpd
3 * @{
4 */
5
6 /**
7 * \file
8 * Web server script interface
9 * \author
10 * Adam Dunkels <[email protected]>
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
PT_THREAD(nullfunction (struct httpd_state * s,char * ptr))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
httpd_cgi(char * name)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
generate_file_stats(void * arg)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
PT_THREAD(file_stats (struct httpd_state * s,char * ptr))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
generate_tcp_stats(void * arg)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
PT_THREAD(tcp_stats (struct httpd_state * s,char * ptr))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
generate_net_stats(void * arg)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
PT_THREAD(net_stats (struct httpd_state * s,char * ptr))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 /** @} */
204