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_overcr";
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 checkvar {
29 NONE,
30 LOAD1,
31 LOAD5,
32 LOAD15,
33 DPU,
34 PROCS,
35 NETSTAT,
36 UPTIME
37 };
39 enum {
40 PORT = 2000
41 };
43 char *server_address = NULL;
44 int server_port = PORT;
45 double warning_value = 0L;
46 double critical_value = 0L;
47 int check_warning_value = FALSE;
48 int check_critical_value = FALSE;
49 enum checkvar vars_to_check = NONE;
50 int cmd_timeout = 1;
52 int netstat_port = 0;
53 char *disk_name = NULL;
54 char *process_name = NULL;
55 char send_buffer[MAX_INPUT_BUFFER];
57 int process_arguments (int, char **);
58 void print_usage (void);
59 void print_help (void);
61 int
62 main (int argc, char **argv)
63 {
64 int result;
65 char recv_buffer[MAX_INPUT_BUFFER];
66 char temp_buffer[MAX_INPUT_BUFFER];
67 char *temp_ptr = NULL;
68 int found_disk = FALSE;
69 unsigned long percent_used_disk_space = 100;
70 double load;
71 double load_1min;
72 double load_5min;
73 double load_15min;
74 int port_connections = 0;
75 int processes = 0;
76 double uptime_raw_hours;
77 int uptime_raw_minutes = 0;
78 int uptime_days = 0;
79 int uptime_hours = 0;
80 int uptime_minutes = 0;
82 if (process_arguments (argc, argv) == ERROR)
83 usage ("Could not parse arguments\n");
85 /* initialize alarm signal handling */
86 signal (SIGALRM, socket_timeout_alarm_handler);
88 /* set socket timeout */
89 alarm (socket_timeout);
91 result = process_tcp_request2 (server_address,
92 server_port,
93 send_buffer,
94 recv_buffer,
95 sizeof (recv_buffer));
97 switch (vars_to_check) {
99 case LOAD1:
100 case LOAD5:
101 case LOAD15:
103 if (result != STATE_OK)
104 die (result, _("Unknown error fetching load data\n"));
106 temp_ptr = (char *) strtok (recv_buffer, "\r\n");
107 if (temp_ptr == NULL)
108 die (STATE_CRITICAL, _("Invalid response from server - no load information\n"));
109 load_1min = strtod (temp_ptr, NULL);
111 temp_ptr = (char *) strtok (NULL, "\r\n");
112 if (temp_ptr == NULL)
113 die (STATE_CRITICAL, _("Invalid response from server after load 1\n"));
114 load_5min = strtod (temp_ptr, NULL);
116 temp_ptr = (char *) strtok (NULL, "\r\n");
117 if (temp_ptr == NULL)
118 die (STATE_CRITICAL, _("Invalid response from server after load 5\n"));
119 load_15min = strtod (temp_ptr, NULL);
121 switch (vars_to_check) {
122 case LOAD1:
123 strcpy (temp_buffer, "1");
124 load = load_1min;
125 break;
126 case LOAD5:
127 strcpy (temp_buffer, "5");
128 load = load_5min;
129 break;
130 default:
131 strcpy (temp_buffer, "15");
132 load = load_15min;
133 break;
134 }
136 if (check_critical_value == TRUE && (load >= critical_value))
137 result = STATE_CRITICAL;
138 else if (check_warning_value == TRUE && (load >= warning_value))
139 result = STATE_WARNING;
141 die (result,
142 _("Load %s - %s-min load average = %0.2f"),
143 state_text(result),
144 temp_buffer,
145 load);
147 break;
149 case DPU:
151 if (result != STATE_OK)
152 die (result, _("Unknown error fetching disk data\n"));
154 for (temp_ptr = (char *) strtok (recv_buffer, " ");
155 temp_ptr != NULL;
156 temp_ptr = (char *) strtok (NULL, " ")) {
158 if (!strcmp (temp_ptr, disk_name)) {
159 found_disk = TRUE;
160 temp_ptr = (char *) strtok (NULL, "%");
161 if (temp_ptr == NULL)
162 die (STATE_CRITICAL, _("Invalid response from server\n"));
163 percent_used_disk_space = strtoul (temp_ptr, NULL, 10);
164 break;
165 }
167 temp_ptr = (char *) strtok (NULL, "\r\n");
168 }
170 /* error if we couldn't find the info for the disk */
171 if (found_disk == FALSE)
172 die (STATE_CRITICAL,
173 "Error: Disk '%s' non-existent or not mounted",
174 disk_name);
176 if (check_critical_value == TRUE && (percent_used_disk_space >= critical_value))
177 result = STATE_CRITICAL;
178 else if (check_warning_value == TRUE && (percent_used_disk_space >= warning_value))
179 result = STATE_WARNING;
181 die (result, "Disk %s - %lu%% used on %s", state_text(result), percent_used_disk_space, disk_name);
183 break;
185 case NETSTAT:
187 if (result != STATE_OK)
188 die (result, _("Unknown error fetching network status\n"));
190 port_connections = strtod (recv_buffer, NULL);
192 if (check_critical_value == TRUE && (port_connections >= critical_value))
193 result = STATE_CRITICAL;
194 else if (check_warning_value == TRUE && (port_connections >= warning_value))
195 result = STATE_WARNING;
197 die (result,
198 _("Net %s - %d connection%s on port %d"),
199 state_text(result),
200 port_connections,
201 (port_connections == 1) ? "" : "s",
202 netstat_port);
204 break;
206 case PROCS:
208 if (result != STATE_OK)
209 die (result, _("Unknown error fetching process status\n"));
211 temp_ptr = (char *) strtok (recv_buffer, "(");
212 if (temp_ptr == NULL)
213 die (STATE_CRITICAL, _("Invalid response from server\n"));
215 temp_ptr = (char *) strtok (NULL, ")");
216 if (temp_ptr == NULL)
217 die (STATE_CRITICAL, _("Invalid response from server\n"));
219 processes = strtod (temp_ptr, NULL);
221 if (check_critical_value == TRUE && (processes >= critical_value))
222 result = STATE_CRITICAL;
223 else if (check_warning_value == TRUE && (processes >= warning_value))
224 result = STATE_WARNING;
226 die (result,
227 _("Process %s - %d instance%s of %s running"),
228 state_text(result),
229 processes,
230 (processes == 1) ? "" : "s",
231 process_name);
232 break;
234 case UPTIME:
236 if (result != STATE_OK)
237 return result;
239 uptime_raw_hours = strtod (recv_buffer, NULL);
240 uptime_raw_minutes = (unsigned long) (uptime_raw_hours * 60.0);
242 if (check_critical_value == TRUE && (uptime_raw_minutes <= critical_value))
243 result = STATE_CRITICAL;
244 else if (check_warning_value == TRUE && (uptime_raw_minutes <= warning_value))
245 result = STATE_WARNING;
247 uptime_days = uptime_raw_minutes / 1440;
248 uptime_raw_minutes %= 1440;
249 uptime_hours = uptime_raw_minutes / 60;
250 uptime_raw_minutes %= 60;
251 uptime_minutes = uptime_raw_minutes;
253 die (result,
254 _("Uptime %s - Up %d days %d hours %d minutes"),
255 state_text(result),
256 uptime_days,
257 uptime_hours,
258 uptime_minutes);
259 break;
261 default:
262 die (STATE_UNKNOWN, _("Nothing to check!\n"));
263 break;
264 }
266 /* reset timeout */
267 alarm (0);
269 printf (_("Reached end of program with no data returned\n"));
271 return result;
272 }
278 /* process command-line arguments */
279 int
280 process_arguments (int argc, char **argv)
281 {
282 int c;
284 int option_index = 0;
285 static struct option long_options[] = {
286 {"port", required_argument, 0, 'p'},
287 {"timeout", required_argument, 0, 't'},
288 {"critical", required_argument, 0, 'c'},
289 {"warning", required_argument, 0, 'w'},
290 {"variable", required_argument, 0, 'v'},
291 {"hostname", required_argument, 0, 'H'},
292 {"version", no_argument, 0, 'V'},
293 {"help", no_argument, 0, 'h'},
294 {0, 0, 0, 0}
295 };
297 /* no options were supplied */
298 if (argc < 2)
299 return ERROR;
301 /* backwards compatibility */
302 if (!is_option (argv[1])) {
303 server_address = argv[1];
304 argv[1] = argv[0];
305 argv = &argv[1];
306 argc--;
307 }
309 for (c = 1; c < argc; c++) {
310 if (strcmp ("-to", argv[c]) == 0)
311 strcpy (argv[c], "-t");
312 else if (strcmp ("-wv", argv[c]) == 0)
313 strcpy (argv[c], "-w");
314 else if (strcmp ("-cv", argv[c]) == 0)
315 strcpy (argv[c], "-c");
316 }
318 while (1) {
319 c = getopt_long (argc, argv, "+hVH:t:c:w:p:v:", long_options,
320 &option_index);
322 if (c == -1 || c == EOF || c == 1)
323 break;
325 switch (c) {
326 case '?': /* print short usage statement if args not parsable */
327 printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
328 print_usage ();
329 exit (STATE_UNKNOWN);
330 case 'h': /* help */
331 print_help ();
332 exit (STATE_OK);
333 case 'V': /* version */
334 print_revision (progname, "$Revision$");
335 exit (STATE_OK);
336 case 'H': /* hostname */
337 server_address = optarg;
338 break;
339 case 'p': /* port */
340 if (is_intnonneg (optarg))
341 server_port = atoi (optarg);
342 else
343 die (STATE_UNKNOWN,
344 _("Server port an integer (seconds)\nType '%s -h' for additional help\n"),
345 progname);
346 break;
347 case 'v': /* variable */
348 if (strcmp (optarg, "LOAD") == 0) {
349 strcpy (send_buffer, "LOAD\r\nQUIT\r\n");
350 if (strcmp (optarg, "LOAD1") == 0)
351 vars_to_check = LOAD1;
352 else if (strcmp (optarg, "LOAD5") == 0)
353 vars_to_check = LOAD5;
354 else if (strcmp (optarg, "LOAD15") == 0)
355 vars_to_check = LOAD15;
356 }
357 else if (strcmp (optarg, "UPTIME") == 0) {
358 vars_to_check = UPTIME;
359 strcpy (send_buffer, "UPTIME\r\n");
360 }
361 else if (strstr (optarg, "PROC") == optarg) {
362 vars_to_check = PROCS;
363 process_name = strscpy (process_name, optarg + 4);
364 sprintf (send_buffer, "PROCESS %s\r\n", process_name);
365 }
366 else if (strstr (optarg, "NET") == optarg) {
367 vars_to_check = NETSTAT;
368 netstat_port = atoi (optarg + 3);
369 sprintf (send_buffer, "NETSTAT %d\r\n", netstat_port);
370 }
371 else if (strstr (optarg, "DPU") == optarg) {
372 vars_to_check = DPU;
373 strcpy (send_buffer, "DISKSPACE\r\n");
374 disk_name = strscpy (disk_name, optarg + 3);
375 }
376 else
377 return ERROR;
378 break;
379 case 'w': /* warning threshold */
380 warning_value = strtoul (optarg, NULL, 10);
381 check_warning_value = TRUE;
382 break;
383 case 'c': /* critical threshold */
384 critical_value = strtoul (optarg, NULL, 10);
385 check_critical_value = TRUE;
386 break;
387 case 't': /* timeout */
388 socket_timeout = atoi (optarg);
389 if (socket_timeout <= 0)
390 return ERROR;
391 }
393 }
394 return OK;
395 }
396 \f
397 void
398 print_usage (void)
399 {
400 printf (_("\
401 Usage: %s -H host [-p port] [-v variable] [-w warning] [-c critical]\n\
402 [-t timeout]\n"),
403 progname);
404 printf (_(UT_HLP_VRS), progname, progname);
405 }
407 void
408 print_help (void)
409 {
410 char *myport;
411 asprintf (&myport, "%d", PORT);
413 print_revision (progname, revision);
415 printf (_("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n"));
416 printf (_(COPYRIGHT), copyright, email);
418 printf (_("\
419 This plugin attempts to contact the Over-CR collector daemon running on the\n\
420 remote UNIX server in order to gather the requested system information.\n\n"));
422 print_usage ();
424 printf (_(UT_HELP_VRSN));
426 printf (_(UT_HOST_PORT), 'p', myport);
428 printf (_("\
429 -v, --variable=STRING\n\
430 Variable to check. Valid variables include:\n\
431 LOAD1 = 1 minute average CPU load\n\
432 LOAD5 = 5 minute average CPU load\n\
433 LOAD15 = 15 minute average CPU load\n\
434 DPU<filesys> = percent used disk space on filesystem <filesys>\n\
435 PROC<process> = number of running processes with name <process>\n\
436 NET<port> = number of active connections on TCP port <port>\n\
437 UPTIME = system uptime in seconds\n"));
439 printf (_("\
440 -w, --warning=INTEGER\n\
441 Threshold which will result in a warning status\n\
442 -c, --critical=INTEGER\n\
443 Threshold which will result in a critical status\n"));
445 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
447 printf (_("\
448 Notes:\n\
449 - For the available options, the critical threshold value should always be\n\
450 higher than the warning threshold value, EXCEPT with the uptime variable\n\n"));
452 printf (_("\
453 - This plugin requres that Eric Molitors' Over-CR collector daemon be\n\
454 running on the remote server. Over-CR can be downloaded from\n\
455 http://www.molitor.org/overcr (This plugin was tested with version\n\
456 0.99.53 of the Over-CR collector)\n\n"));
458 printf (_(UT_SUPPORT));
459 }