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 else
110 load_1min = strtod (temp_ptr, NULL);
112 temp_ptr = (char *) strtok (NULL, "\r\n");
113 if (temp_ptr == NULL)
114 die (STATE_CRITICAL, _("Invalid response from server after load 1\n"));
115 else
116 load_5min = strtod (temp_ptr, NULL);
118 temp_ptr = (char *) strtok (NULL, "\r\n");
119 if (temp_ptr == NULL)
120 die (STATE_CRITICAL, _("Invalid response from server after load 5\n"));
121 else
122 load_15min = strtod (temp_ptr, NULL);
124 switch (vars_to_check) {
125 case LOAD1:
126 strcpy (temp_buffer, "1");
127 load = load_1min;
128 break;
129 case LOAD5:
130 strcpy (temp_buffer, "5");
131 load = load_5min;
132 break;
133 default:
134 strcpy (temp_buffer, "15");
135 load = load_15min;
136 break;
137 }
139 if (check_critical_value == TRUE && (load >= critical_value))
140 result = STATE_CRITICAL;
141 else if (check_warning_value == TRUE && (load >= warning_value))
142 result = STATE_WARNING;
144 die (result,
145 _("Load %s - %s-min load average = %0.2f"),
146 state_text(result),
147 temp_buffer,
148 load);
150 break;
152 case DPU:
154 if (result != STATE_OK)
155 die (result, _("Unknown error fetching disk data\n"));
157 for (temp_ptr = (char *) strtok (recv_buffer, " ");
158 temp_ptr != NULL;
159 temp_ptr = (char *) strtok (NULL, " ")) {
161 if (!strcmp (temp_ptr, disk_name)) {
162 found_disk = TRUE;
163 temp_ptr = (char *) strtok (NULL, "%");
164 if (temp_ptr == NULL)
165 die (STATE_CRITICAL, _("Invalid response from server\n"));
166 else
167 percent_used_disk_space = strtoul (temp_ptr, NULL, 10);
168 break;
169 }
171 temp_ptr = (char *) strtok (NULL, "\r\n");
172 }
174 /* error if we couldn't find the info for the disk */
175 if (found_disk == FALSE)
176 die (STATE_CRITICAL,
177 "Error: Disk '%s' non-existent or not mounted",
178 disk_name);
180 if (check_critical_value == TRUE && (percent_used_disk_space >= critical_value))
181 result = STATE_CRITICAL;
182 else if (check_warning_value == TRUE && (percent_used_disk_space >= warning_value))
183 result = STATE_WARNING;
185 die (result, "Disk %s - %lu%% used on %s", state_text(result), percent_used_disk_space, disk_name);
187 break;
189 case NETSTAT:
191 if (result != STATE_OK)
192 die (result, _("Unknown error fetching network status\n"));
193 else
194 port_connections = strtod (recv_buffer, NULL);
196 if (check_critical_value == TRUE && (port_connections >= critical_value))
197 result = STATE_CRITICAL;
198 else if (check_warning_value == TRUE && (port_connections >= warning_value))
199 result = STATE_WARNING;
201 die (result,
202 _("Net %s - %d connection%s on port %d"),
203 state_text(result),
204 port_connections,
205 (port_connections == 1) ? "" : "s",
206 netstat_port);
208 break;
210 case PROCS:
212 if (result != STATE_OK)
213 die (result, _("Unknown error fetching process status\n"));
215 temp_ptr = (char *) strtok (recv_buffer, "(");
216 if (temp_ptr == NULL)
217 die (STATE_CRITICAL, _("Invalid response from server\n"));
219 temp_ptr = (char *) strtok (NULL, ")");
220 if (temp_ptr == NULL)
221 die (STATE_CRITICAL, _("Invalid response from server\n"));
222 else
223 processes = strtod (temp_ptr, NULL);
225 if (check_critical_value == TRUE && (processes >= critical_value))
226 result = STATE_CRITICAL;
227 else if (check_warning_value == TRUE && (processes >= warning_value))
228 result = STATE_WARNING;
230 die (result,
231 _("Process %s - %d instance%s of %s running"),
232 state_text(result),
233 processes,
234 (processes == 1) ? "" : "s",
235 process_name);
236 break;
238 case UPTIME:
240 if (result != STATE_OK)
241 return result;
243 uptime_raw_hours = strtod (recv_buffer, NULL);
244 uptime_raw_minutes = (unsigned long) (uptime_raw_hours * 60.0);
246 if (check_critical_value == TRUE && (uptime_raw_minutes <= critical_value))
247 result = STATE_CRITICAL;
248 else if (check_warning_value == TRUE && (uptime_raw_minutes <= warning_value))
249 result = STATE_WARNING;
251 uptime_days = uptime_raw_minutes / 1440;
252 uptime_raw_minutes %= 1440;
253 uptime_hours = uptime_raw_minutes / 60;
254 uptime_raw_minutes %= 60;
255 uptime_minutes = uptime_raw_minutes;
257 die (result,
258 _("Uptime %s - Up %d days %d hours %d minutes"),
259 state_text(result),
260 uptime_days,
261 uptime_hours,
262 uptime_minutes);
263 break;
265 default:
266 die (STATE_UNKNOWN, _("Nothing to check!\n"));
267 break;
268 }
270 /* reset timeout */
271 /* alarm (0); */
273 /* printf (_("Reached end of program with no data returned\n")); */
275 /* return result; */
276 }
282 /* process command-line arguments */
283 int
284 process_arguments (int argc, char **argv)
285 {
286 int c;
288 int option = 0;
289 static struct option longopts[] = {
290 {"port", required_argument, 0, 'p'},
291 {"timeout", required_argument, 0, 't'},
292 {"critical", required_argument, 0, 'c'},
293 {"warning", required_argument, 0, 'w'},
294 {"variable", required_argument, 0, 'v'},
295 {"hostname", required_argument, 0, 'H'},
296 {"version", no_argument, 0, 'V'},
297 {"help", no_argument, 0, 'h'},
298 {0, 0, 0, 0}
299 };
301 /* no options were supplied */
302 if (argc < 2)
303 return ERROR;
305 /* backwards compatibility */
306 if (!is_option (argv[1])) {
307 server_address = argv[1];
308 argv[1] = argv[0];
309 argv = &argv[1];
310 argc--;
311 }
313 for (c = 1; c < argc; c++) {
314 if (strcmp ("-to", argv[c]) == 0)
315 strcpy (argv[c], "-t");
316 else if (strcmp ("-wv", argv[c]) == 0)
317 strcpy (argv[c], "-w");
318 else if (strcmp ("-cv", argv[c]) == 0)
319 strcpy (argv[c], "-c");
320 }
322 while (1) {
323 c = getopt_long (argc, argv, "+hVH:t:c:w:p:v:", longopts,
324 &option);
326 if (c == -1 || c == EOF || c == 1)
327 break;
329 switch (c) {
330 case '?': /* print short usage statement if args not parsable */
331 printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
332 print_usage ();
333 exit (STATE_UNKNOWN);
334 case 'h': /* help */
335 print_help ();
336 exit (STATE_OK);
337 case 'V': /* version */
338 print_revision (progname, "$Revision$");
339 exit (STATE_OK);
340 case 'H': /* hostname */
341 server_address = optarg;
342 break;
343 case 'p': /* port */
344 if (is_intnonneg (optarg))
345 server_port = atoi (optarg);
346 else
347 die (STATE_UNKNOWN,
348 _("Server port an integer (seconds)\nType '%s -h' for additional help\n"),
349 progname);
350 break;
351 case 'v': /* variable */
352 if (strcmp (optarg, "LOAD") == 0) {
353 strcpy (send_buffer, "LOAD\r\nQUIT\r\n");
354 if (strcmp (optarg, "LOAD1") == 0)
355 vars_to_check = LOAD1;
356 else if (strcmp (optarg, "LOAD5") == 0)
357 vars_to_check = LOAD5;
358 else if (strcmp (optarg, "LOAD15") == 0)
359 vars_to_check = LOAD15;
360 }
361 else if (strcmp (optarg, "UPTIME") == 0) {
362 vars_to_check = UPTIME;
363 strcpy (send_buffer, "UPTIME\r\n");
364 }
365 else if (strstr (optarg, "PROC") == optarg) {
366 vars_to_check = PROCS;
367 process_name = strscpy (process_name, optarg + 4);
368 sprintf (send_buffer, "PROCESS %s\r\n", process_name);
369 }
370 else if (strstr (optarg, "NET") == optarg) {
371 vars_to_check = NETSTAT;
372 netstat_port = atoi (optarg + 3);
373 sprintf (send_buffer, "NETSTAT %d\r\n", netstat_port);
374 }
375 else if (strstr (optarg, "DPU") == optarg) {
376 vars_to_check = DPU;
377 strcpy (send_buffer, "DISKSPACE\r\n");
378 disk_name = strscpy (disk_name, optarg + 3);
379 }
380 else
381 return ERROR;
382 break;
383 case 'w': /* warning threshold */
384 warning_value = strtoul (optarg, NULL, 10);
385 check_warning_value = TRUE;
386 break;
387 case 'c': /* critical threshold */
388 critical_value = strtoul (optarg, NULL, 10);
389 check_critical_value = TRUE;
390 break;
391 case 't': /* timeout */
392 socket_timeout = atoi (optarg);
393 if (socket_timeout <= 0)
394 return ERROR;
395 }
397 }
398 return OK;
399 }
400 \f
401 void
402 print_usage (void)
403 {
404 printf (_("\
405 Usage: %s -H host [-p port] [-v variable] [-w warning] [-c critical]\n\
406 [-t timeout]\n"),
407 progname);
408 printf (_(UT_HLP_VRS), progname, progname);
409 }
411 void
412 print_help (void)
413 {
414 char *myport;
415 asprintf (&myport, "%d", PORT);
417 print_revision (progname, revision);
419 printf (_("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n"));
420 printf (_(COPYRIGHT), copyright, email);
422 printf (_("\
423 This plugin attempts to contact the Over-CR collector daemon running on the\n\
424 remote UNIX server in order to gather the requested system information.\n\n"));
426 print_usage ();
428 printf (_(UT_HELP_VRSN));
430 printf (_(UT_HOST_PORT), 'p', myport);
432 printf (_("\
433 -v, --variable=STRING\n\
434 Variable to check. Valid variables include:\n\
435 LOAD1 = 1 minute average CPU load\n\
436 LOAD5 = 5 minute average CPU load\n\
437 LOAD15 = 15 minute average CPU load\n\
438 DPU<filesys> = percent used disk space on filesystem <filesys>\n\
439 PROC<process> = number of running processes with name <process>\n\
440 NET<port> = number of active connections on TCP port <port>\n\
441 UPTIME = system uptime in seconds\n"));
443 printf (_("\
444 -w, --warning=INTEGER\n\
445 Threshold which will result in a warning status\n\
446 -c, --critical=INTEGER\n\
447 Threshold which will result in a critical status\n"));
449 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
451 printf (_("\
452 Notes:\n\
453 - For the available options, the critical threshold value should always be\n\
454 higher than the warning threshold value, EXCEPT with the uptime variable\n\n"));
456 printf (_("\
457 - This plugin requres that Eric Molitors' Over-CR collector daemon be\n\
458 running on the remote server. Over-CR can be downloaded from\n\
459 http://www.molitor.org/overcr (This plugin was tested with version\n\
460 0.99.53 of the Over-CR collector)\n\n"));
462 printf (_(UT_SUPPORT));
463 }