1 /******************************************************************************
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2 of the License, or
6 (at your option) any later version.
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 ******************************************************************************/
19 const char *progname = "check_real";
20 const char *revision = "$Revision$";
21 const char *copyright = "2000-2003";
22 const char *email = "nagiosplug-devel@lists.sourceforge.net";
24 #include "common.h"
25 #include "netutils.h"
26 #include "utils.h"
28 enum {
29 PORT = 554
30 };
32 #define EXPECT "RTSP/1."
33 #define URL ""
35 int process_arguments (int, char **);
36 int validate_arguments (void);
37 void print_help (void);
38 void print_usage (void);
40 int server_port = PORT;
41 char *server_address;
42 char *host_name;
43 char *server_url = NULL;
44 char *server_expect;
45 int warning_time = 0;
46 int check_warning_time = FALSE;
47 int critical_time = 0;
48 int check_critical_time = FALSE;
49 int verbose = FALSE;
55 \f
56 int
57 main (int argc, char **argv)
58 {
59 int sd;
60 int result;
61 char buffer[MAX_INPUT_BUFFER];
62 char *status_line = NULL;
64 setlocale (LC_ALL, "");
65 bindtextdomain (PACKAGE, LOCALEDIR);
66 textdomain (PACKAGE);
68 if (process_arguments (argc, argv) != OK)
69 usage (_("Invalid command arguments supplied\n"));
71 /* initialize alarm signal handling */
72 signal (SIGALRM, socket_timeout_alarm_handler);
74 /* set socket timeout */
75 alarm (socket_timeout);
76 time (&start_time);
78 /* try to connect to the host at the given port number */
79 if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
80 die (STATE_CRITICAL, _("Unable to connect to %s on port %d\n"),
81 server_address, server_port);
83 /* Part I - Server Check */
85 /* send the OPTIONS request */
86 sprintf (buffer, "OPTIONS rtsp://%s:%d RTSP/1.0\r\n", host_name, server_port);
87 result = send (sd, buffer, strlen (buffer), 0);
89 /* send the header sync */
90 sprintf (buffer, "CSeq: 1\r\n");
91 result = send (sd, buffer, strlen (buffer), 0);
93 /* send a newline so the server knows we're done with the request */
94 sprintf (buffer, "\r\n");
95 result = send (sd, buffer, strlen (buffer), 0);
97 /* watch for the REAL connection string */
98 result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
100 /* return a CRITICAL status if we couldn't read any data */
101 if (result == -1)
102 die (STATE_CRITICAL, _("No data received from %s\n"), host_name);
104 /* make sure we find the response we are looking for */
105 if (!strstr (buffer, server_expect)) {
106 if (server_port == PORT)
107 printf (_("Invalid REAL response received from host\n"));
108 else
109 printf (_("Invalid REAL response received from host on port %d\n"),
110 server_port);
111 }
112 else {
113 /* else we got the REAL string, so check the return code */
115 time (&end_time);
117 result = STATE_OK;
119 status_line = (char *) strtok (buffer, "\n");
121 if (strstr (status_line, "200"))
122 result = STATE_OK;
124 /* client errors result in a warning state */
125 else if (strstr (status_line, "400"))
126 result = STATE_WARNING;
127 else if (strstr (status_line, "401"))
128 result = STATE_WARNING;
129 else if (strstr (status_line, "402"))
130 result = STATE_WARNING;
131 else if (strstr (status_line, "403"))
132 result = STATE_WARNING;
133 else if (strstr (status_line, "404"))
134 result = STATE_WARNING;
136 /* server errors result in a critical state */
137 else if (strstr (status_line, "500"))
138 result = STATE_CRITICAL;
139 else if (strstr (status_line, "501"))
140 result = STATE_CRITICAL;
141 else if (strstr (status_line, "502"))
142 result = STATE_CRITICAL;
143 else if (strstr (status_line, "503"))
144 result = STATE_CRITICAL;
146 else
147 result = STATE_UNKNOWN;
148 }
150 /* Part II - Check stream exists and is ok */
151 if ((result == STATE_OK )&& (server_url != NULL) ) {
153 /* Part I - Server Check */
155 /* send the OPTIONS request */
156 sprintf (buffer, "DESCRIBE rtsp://%s:%d%s RTSP/1.0\n", host_name,
157 server_port, server_url);
158 result = send (sd, buffer, strlen (buffer), 0);
160 /* send the header sync */
161 sprintf (buffer, "CSeq: 2\n");
162 result = send (sd, buffer, strlen (buffer), 0);
164 /* send a newline so the server knows we're done with the request */
165 sprintf (buffer, "\n");
166 result = send (sd, buffer, strlen (buffer), 0);
168 /* watch for the REAL connection string */
169 result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
171 /* return a CRITICAL status if we couldn't read any data */
172 if (result == -1) {
173 printf (_("No data received from host\n"));
174 result = STATE_CRITICAL;
175 }
176 else {
177 /* make sure we find the response we are looking for */
178 if (!strstr (buffer, server_expect)) {
179 if (server_port == PORT)
180 printf (_("Invalid REAL response received from host\n"));
181 else
182 printf (_("Invalid REAL response received from host on port %d\n"),
183 server_port);
184 }
185 else {
187 /* else we got the REAL string, so check the return code */
189 time (&end_time);
191 result = STATE_OK;
193 status_line = (char *) strtok (buffer, "\n");
195 if (strstr (status_line, "200"))
196 result = STATE_OK;
198 /* client errors result in a warning state */
199 else if (strstr (status_line, "400"))
200 result = STATE_WARNING;
201 else if (strstr (status_line, "401"))
202 result = STATE_WARNING;
203 else if (strstr (status_line, "402"))
204 result = STATE_WARNING;
205 else if (strstr (status_line, "403"))
206 result = STATE_WARNING;
207 else if (strstr (status_line, "404"))
208 result = STATE_WARNING;
210 /* server errors result in a critical state */
211 else if (strstr (status_line, "500"))
212 result = STATE_CRITICAL;
213 else if (strstr (status_line, "501"))
214 result = STATE_CRITICAL;
215 else if (strstr (status_line, "502"))
216 result = STATE_CRITICAL;
217 else if (strstr (status_line, "503"))
218 result = STATE_CRITICAL;
220 else
221 result = STATE_UNKNOWN;
222 }
223 }
224 }
226 /* Return results */
227 if (result == STATE_OK) {
229 if (check_critical_time == TRUE
230 && (end_time - start_time) > critical_time) result = STATE_CRITICAL;
231 else if (check_warning_time == TRUE
232 && (end_time - start_time) > warning_time) result =
233 STATE_WARNING;
235 /* Put some HTML in here to create a dynamic link */
236 printf (_("REAL %s - %d second response time\n"),
237 state_text (result),
238 (int) (end_time - start_time));
239 }
240 else
241 printf ("%s\n", status_line);
243 /* close the connection */
244 close (sd);
246 /* reset the alarm */
247 alarm (0);
249 return result;
250 }
256 \f
257 /* process command-line arguments */
258 int
259 process_arguments (int argc, char **argv)
260 {
261 int c;
263 int option = 0;
264 static struct option longopts[] = {
265 {"hostname", required_argument, 0, 'H'},
266 {"IPaddress", required_argument, 0, 'I'},
267 {"expect", required_argument, 0, 'e'},
268 {"url", required_argument, 0, 'u'},
269 {"port", required_argument, 0, 'p'},
270 {"critical", required_argument, 0, 'c'},
271 {"warning", required_argument, 0, 'w'},
272 {"timeout", required_argument, 0, 't'},
273 {"verbose", no_argument, 0, 'v'},
274 {"version", no_argument, 0, 'V'},
275 {"help", no_argument, 0, 'h'},
276 {0, 0, 0, 0}
277 };
279 if (argc < 2)
280 return ERROR;
282 for (c = 1; c < argc; c++) {
283 if (strcmp ("-to", argv[c]) == 0)
284 strcpy (argv[c], "-t");
285 else if (strcmp ("-wt", argv[c]) == 0)
286 strcpy (argv[c], "-w");
287 else if (strcmp ("-ct", argv[c]) == 0)
288 strcpy (argv[c], "-c");
289 }
291 while (1) {
292 c = getopt_long (argc, argv, "+hVI:H:e:u:p:w:c:t:", longopts,
293 &option);
295 if (c == -1 || c == EOF)
296 break;
298 switch (c) {
299 case 'I': /* hostname */
300 case 'H': /* hostname */
301 if (server_address)
302 break;
303 else if (is_host (optarg))
304 server_address = optarg;
305 else
306 usage (_("Invalid host name\n"));
307 break;
308 case 'e': /* string to expect in response header */
309 server_expect = optarg;
310 break;
311 case 'u': /* server URL */
312 server_url = optarg;
313 break;
314 case 'p': /* port */
315 if (is_intpos (optarg)) {
316 server_port = atoi (optarg);
317 }
318 else {
319 usage (_("Server port must be a positive integer\n"));
320 }
321 break;
322 case 'w': /* warning time threshold */
323 if (is_intnonneg (optarg)) {
324 warning_time = atoi (optarg);
325 check_warning_time = TRUE;
326 }
327 else {
328 usage (_("Warning time must be a nonnegative integer\n"));
329 }
330 break;
331 case 'c': /* critical time threshold */
332 if (is_intnonneg (optarg)) {
333 critical_time = atoi (optarg);
334 check_critical_time = TRUE;
335 }
336 else {
337 usage (_("Critical time must be a nonnegative integer\n"));
338 }
339 break;
340 case 'v': /* verbose */
341 verbose = TRUE;
342 break;
343 case 't': /* timeout */
344 if (is_intnonneg (optarg)) {
345 socket_timeout = atoi (optarg);
346 }
347 else {
348 usage (_("Time interval must be a nonnegative integer\n"));
349 }
350 break;
351 case 'V': /* version */
352 print_revision (progname, "$Revision$");
353 exit (STATE_OK);
354 case 'h': /* help */
355 print_help ();
356 exit (STATE_OK);
357 case '?': /* usage */
358 usage (_("Invalid argument\n"));
359 }
360 }
362 c = optind;
363 if (server_address==NULL && argc>c) {
364 if (is_host (argv[c])) {
365 server_address = argv[c++];
366 }
367 else {
368 usage (_("Invalid host name"));
369 }
370 }
372 if (server_address==NULL)
373 usage (_("You must provide a server to check\n"));
375 if (host_name==NULL)
376 host_name = strdup (server_address);
378 if (server_expect == NULL)
379 server_expect = strdup(EXPECT);
381 return validate_arguments ();
382 }
388 int
389 validate_arguments (void)
390 {
391 return OK;
392 }
397 \f
398 void
399 print_help (void)
400 {
401 char *myport;
402 asprintf (&myport, "%d", PORT);
404 print_revision (progname, "$Revision$");
406 printf (_("Copyright (c) 1999 Pedro Leite <leite@cic.ua.pt>\n"));
407 printf (_(COPYRIGHT), copyright, email);
409 printf (_("This plugin tests the REAL service on the specified host.\n\n"));
411 print_usage ();
413 printf (_(UT_HELP_VRSN));
415 printf (_(UT_HOST_PORT), 'p', myport);
417 printf (_("\
418 -u, --url=STRING\n\
419 Connect to this url\n\
420 -e, --expect=STRING\n\
421 String to expect in first line of server response (default: %s)\n"),
422 EXPECT);
424 printf (_(UT_WARN_CRIT));
426 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
428 printf (_(UT_VERBOSE));
430 printf(_("\
431 This plugin will attempt to open an RTSP connection with the host.\n\
432 Successul connects return STATE_OK, refusals and timeouts return\n\
433 STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful connects,\n\
434 but incorrect reponse messages from the host result in STATE_WARNING return\n\
435 values."));
437 printf (_(UT_SUPPORT));
438 }
444 void
445 print_usage (void)
446 {
447 printf ("\
448 Usage: %s -H host [-e expect] [-p port] [-w warn] [-c crit]\n\
449 [-t timeout] [-v]\n", progname);
450 printf (_(UT_HLP_VRS), progname, progname);
451 }