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 $Id$
19 ******************************************************************************/
21 const char *progname = "check_real";
22 const char *revision = "$Revision$";
23 const char *copyright = "2000-2004";
24 const char *email = "nagiosplug-devel@lists.sourceforge.net";
26 #include "common.h"
27 #include "netutils.h"
28 #include "utils.h"
30 enum {
31 PORT = 554
32 };
34 #define EXPECT "RTSP/1."
35 #define URL ""
37 int process_arguments (int, char **);
38 int validate_arguments (void);
39 void print_help (void);
40 void print_usage (void);
42 int server_port = PORT;
43 char *server_address;
44 char *host_name;
45 char *server_url = NULL;
46 char *server_expect;
47 int warning_time = 0;
48 int check_warning_time = FALSE;
49 int critical_time = 0;
50 int check_critical_time = FALSE;
51 int verbose = FALSE;
55 int
56 main (int argc, char **argv)
57 {
58 int sd;
59 int result = STATE_UNKNOWN;
60 char buffer[MAX_INPUT_BUFFER];
61 char *status_line = NULL;
63 setlocale (LC_ALL, "");
64 bindtextdomain (PACKAGE, LOCALEDIR);
65 textdomain (PACKAGE);
67 if (process_arguments (argc, argv) == ERROR)
68 usage4 (_("Could not parse arguments"));
70 /* initialize alarm signal handling */
71 signal (SIGALRM, socket_timeout_alarm_handler);
73 /* set socket timeout */
74 alarm (socket_timeout);
75 time (&start_time);
77 /* try to connect to the host at the given port number */
78 if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
79 die (STATE_CRITICAL, _("Unable to connect to %s on port %d\n"),
80 server_address, server_port);
82 /* Part I - Server Check */
84 /* send the OPTIONS request */
85 sprintf (buffer, "OPTIONS rtsp://%s:%d RTSP/1.0\r\n", host_name, server_port);
86 result = send (sd, buffer, strlen (buffer), 0);
88 /* send the header sync */
89 sprintf (buffer, "CSeq: 1\r\n");
90 result = send (sd, buffer, strlen (buffer), 0);
92 /* send a newline so the server knows we're done with the request */
93 sprintf (buffer, "\r\n");
94 result = send (sd, buffer, strlen (buffer), 0);
96 /* watch for the REAL connection string */
97 result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
99 /* return a CRITICAL status if we couldn't read any data */
100 if (result == -1)
101 die (STATE_CRITICAL, _("No data received from %s\n"), host_name);
103 /* make sure we find the response we are looking for */
104 if (!strstr (buffer, server_expect)) {
105 if (server_port == PORT)
106 printf (_("Invalid REAL response received from host\n"));
107 else
108 printf (_("Invalid REAL response received from host on port %d\n"),
109 server_port);
110 }
111 else {
112 /* else we got the REAL string, so check the return code */
114 time (&end_time);
116 result = STATE_OK;
118 status_line = (char *) strtok (buffer, "\n");
120 if (strstr (status_line, "200"))
121 result = STATE_OK;
123 /* client errors result in a warning state */
124 else if (strstr (status_line, "400"))
125 result = STATE_WARNING;
126 else if (strstr (status_line, "401"))
127 result = STATE_WARNING;
128 else if (strstr (status_line, "402"))
129 result = STATE_WARNING;
130 else if (strstr (status_line, "403"))
131 result = STATE_WARNING;
132 else if (strstr (status_line, "404"))
133 result = STATE_WARNING;
135 /* server errors result in a critical state */
136 else if (strstr (status_line, "500"))
137 result = STATE_CRITICAL;
138 else if (strstr (status_line, "501"))
139 result = STATE_CRITICAL;
140 else if (strstr (status_line, "502"))
141 result = STATE_CRITICAL;
142 else if (strstr (status_line, "503"))
143 result = STATE_CRITICAL;
145 else
146 result = STATE_UNKNOWN;
147 }
149 /* Part II - Check stream exists and is ok */
150 if ((result == STATE_OK )&& (server_url != NULL) ) {
152 /* Part I - Server Check */
154 /* send the OPTIONS request */
155 sprintf (buffer, "DESCRIBE rtsp://%s:%d%s RTSP/1.0\n", host_name,
156 server_port, server_url);
157 result = send (sd, buffer, strlen (buffer), 0);
159 /* send the header sync */
160 sprintf (buffer, "CSeq: 2\n");
161 result = send (sd, buffer, strlen (buffer), 0);
163 /* send a newline so the server knows we're done with the request */
164 sprintf (buffer, "\n");
165 result = send (sd, buffer, strlen (buffer), 0);
167 /* watch for the REAL connection string */
168 result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
170 /* return a CRITICAL status if we couldn't read any data */
171 if (result == -1) {
172 printf (_("No data received from host\n"));
173 result = STATE_CRITICAL;
174 }
175 else {
176 /* make sure we find the response we are looking for */
177 if (!strstr (buffer, server_expect)) {
178 if (server_port == PORT)
179 printf (_("Invalid REAL response received from host\n"));
180 else
181 printf (_("Invalid REAL response received from host on port %d\n"),
182 server_port);
183 }
184 else {
186 /* else we got the REAL string, so check the return code */
188 time (&end_time);
190 result = STATE_OK;
192 status_line = (char *) strtok (buffer, "\n");
194 if (strstr (status_line, "200"))
195 result = STATE_OK;
197 /* client errors result in a warning state */
198 else if (strstr (status_line, "400"))
199 result = STATE_WARNING;
200 else if (strstr (status_line, "401"))
201 result = STATE_WARNING;
202 else if (strstr (status_line, "402"))
203 result = STATE_WARNING;
204 else if (strstr (status_line, "403"))
205 result = STATE_WARNING;
206 else if (strstr (status_line, "404"))
207 result = STATE_WARNING;
209 /* server errors result in a critical state */
210 else if (strstr (status_line, "500"))
211 result = STATE_CRITICAL;
212 else if (strstr (status_line, "501"))
213 result = STATE_CRITICAL;
214 else if (strstr (status_line, "502"))
215 result = STATE_CRITICAL;
216 else if (strstr (status_line, "503"))
217 result = STATE_CRITICAL;
219 else
220 result = STATE_UNKNOWN;
221 }
222 }
223 }
225 /* Return results */
226 if (result == STATE_OK) {
228 if (check_critical_time == TRUE
229 && (end_time - start_time) > critical_time) result = STATE_CRITICAL;
230 else if (check_warning_time == TRUE
231 && (end_time - start_time) > warning_time) result =
232 STATE_WARNING;
234 /* Put some HTML in here to create a dynamic link */
235 printf (_("REAL %s - %d second response time\n"),
236 state_text (result),
237 (int) (end_time - start_time));
238 }
239 else
240 printf ("%s\n", status_line);
242 /* close the connection */
243 close (sd);
245 /* reset the alarm */
246 alarm (0);
248 return result;
249 }
253 /* process command-line arguments */
254 int
255 process_arguments (int argc, char **argv)
256 {
257 int c;
259 int option = 0;
260 static struct option longopts[] = {
261 {"hostname", required_argument, 0, 'H'},
262 {"IPaddress", required_argument, 0, 'I'},
263 {"expect", required_argument, 0, 'e'},
264 {"url", required_argument, 0, 'u'},
265 {"port", required_argument, 0, 'p'},
266 {"critical", required_argument, 0, 'c'},
267 {"warning", required_argument, 0, 'w'},
268 {"timeout", required_argument, 0, 't'},
269 {"verbose", no_argument, 0, 'v'},
270 {"version", no_argument, 0, 'V'},
271 {"help", no_argument, 0, 'h'},
272 {0, 0, 0, 0}
273 };
275 if (argc < 2)
276 return ERROR;
278 for (c = 1; c < argc; c++) {
279 if (strcmp ("-to", argv[c]) == 0)
280 strcpy (argv[c], "-t");
281 else if (strcmp ("-wt", argv[c]) == 0)
282 strcpy (argv[c], "-w");
283 else if (strcmp ("-ct", argv[c]) == 0)
284 strcpy (argv[c], "-c");
285 }
287 while (1) {
288 c = getopt_long (argc, argv, "+hVI:H:e:u:p:w:c:t:", longopts,
289 &option);
291 if (c == -1 || c == EOF)
292 break;
294 switch (c) {
295 case 'I': /* hostname */
296 case 'H': /* hostname */
297 if (server_address)
298 break;
299 else if (is_host (optarg))
300 server_address = optarg;
301 else
302 usage2 (_("Invalid hostname/address"), optarg);
303 break;
304 case 'e': /* string to expect in response header */
305 server_expect = optarg;
306 break;
307 case 'u': /* server URL */
308 server_url = optarg;
309 break;
310 case 'p': /* port */
311 if (is_intpos (optarg)) {
312 server_port = atoi (optarg);
313 }
314 else {
315 usage4 (_("Port must be a positive integer"));
316 }
317 break;
318 case 'w': /* warning time threshold */
319 if (is_intnonneg (optarg)) {
320 warning_time = atoi (optarg);
321 check_warning_time = TRUE;
322 }
323 else {
324 usage4 (_("Warning time must be a positive integer"));
325 }
326 break;
327 case 'c': /* critical time threshold */
328 if (is_intnonneg (optarg)) {
329 critical_time = atoi (optarg);
330 check_critical_time = TRUE;
331 }
332 else {
333 usage4 (_("Critical time must be a positive integer"));
334 }
335 break;
336 case 'v': /* verbose */
337 verbose = TRUE;
338 break;
339 case 't': /* timeout */
340 if (is_intnonneg (optarg)) {
341 socket_timeout = atoi (optarg);
342 }
343 else {
344 usage4 (_("Timeout interval must be a positive integer"));
345 }
346 break;
347 case 'V': /* version */
348 print_revision (progname, revision);
349 exit (STATE_OK);
350 case 'h': /* help */
351 print_help ();
352 exit (STATE_OK);
353 case '?': /* usage */
354 usage2 (_("Unknown argument"), optarg);
355 }
356 }
358 c = optind;
359 if (server_address==NULL && argc>c) {
360 if (is_host (argv[c])) {
361 server_address = argv[c++];
362 }
363 else {
364 usage2 (_("Invalid hostname/address"), argv[c]);
365 }
366 }
368 if (server_address==NULL)
369 usage4 (_("You must provide a server to check"));
371 if (host_name==NULL)
372 host_name = strdup (server_address);
374 if (server_expect == NULL)
375 server_expect = strdup(EXPECT);
377 return validate_arguments ();
378 }
382 int
383 validate_arguments (void)
384 {
385 return OK;
386 }
390 void
391 print_help (void)
392 {
393 char *myport;
394 asprintf (&myport, "%d", PORT);
396 print_revision (progname, revision);
398 printf ("Copyright (c) 1999 Pedro Leite <leite@cic.ua.pt>\n");
399 printf (COPYRIGHT, copyright, email);
401 printf (_("This plugin tests the REAL service on the specified host.\n\n"));
403 print_usage ();
405 printf (_(UT_HELP_VRSN));
407 printf (_(UT_HOST_PORT), 'p', myport);
409 printf (_("\
410 -u, --url=STRING\n\
411 Connect to this url\n\
412 -e, --expect=STRING\n\
413 String to expect in first line of server response (default: %s)\n"),
414 EXPECT);
416 printf (_(UT_WARN_CRIT));
418 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
420 printf (_(UT_VERBOSE));
422 printf(_("\
423 This plugin will attempt to open an RTSP connection with the host.\n\
424 Successul connects return STATE_OK, refusals and timeouts return\n\
425 STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful connects,\n\
426 but incorrect reponse messages from the host result in STATE_WARNING return\n\
427 values."));
429 printf (_(UT_SUPPORT));
430 }
434 void
435 print_usage (void)
436 {
437 printf ("\
438 Usage: %s -H host [-e expect] [-p port] [-w warn] [-c crit]\n\
439 [-t timeout] [-v]\n", progname);
440 }