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pkg-monitoring-plugins/plugins/check_overcr.c

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/******************************************************************************
*
* Nagios check_overcr plugin
*
* License: GPL
* Copyright (c) 2000-2006 nagios-plugins team
*
* Last Modified: $Date: 2007/02/06 21:03:21 $
*
* Description:
*
* This file contains the check_overcr plugin
*
* This plugin attempts to contact the Over-CR collector daemon running on the
* remote UNIX server in order to gather the requested system information.
*
*
* License Information:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: check_overcr.c,v 1.23 2007/02/06 21:03:21 opensides Exp $
******************************************************************************/
const char *progname = "check_overcr";
const char *revision = "$Revision: 1.23 $";
const char *copyright = "2000-2006";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "netutils.h"
#include "utils.h"
enum checkvar {
NONE,
LOAD1,
LOAD5,
LOAD15,
DPU,
PROCS,
NETSTAT,
UPTIME
};
enum {
PORT = 2000
};
char *server_address = NULL;
int server_port = PORT;
double warning_value = 0L;
double critical_value = 0L;
int check_warning_value = FALSE;
int check_critical_value = FALSE;
enum checkvar vars_to_check = NONE;
int cmd_timeout = 1;
int netstat_port = 0;
char *disk_name = NULL;
char *process_name = NULL;
char send_buffer[MAX_INPUT_BUFFER];
int process_arguments (int, char **);
void print_usage (void);
void print_help (void);
int
main (int argc, char **argv)
{
int result = STATE_UNKNOWN;
char recv_buffer[MAX_INPUT_BUFFER];
char temp_buffer[MAX_INPUT_BUFFER];
char *temp_ptr = NULL;
int found_disk = FALSE;
unsigned long percent_used_disk_space = 100;
double load;
double load_1min;
double load_5min;
double load_15min;
int port_connections = 0;
int processes = 0;
double uptime_raw_hours;
int uptime_raw_minutes = 0;
int uptime_days = 0;
int uptime_hours = 0;
int uptime_minutes = 0;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
/* initialize alarm signal handling */
signal (SIGALRM, socket_timeout_alarm_handler);
/* set socket timeout */
alarm (socket_timeout);
result = process_tcp_request2 (server_address,
server_port,
send_buffer,
recv_buffer,
sizeof (recv_buffer));
switch (vars_to_check) {
case LOAD1:
case LOAD5:
case LOAD15:
if (result != STATE_OK)
die (result, _("Unknown error fetching load data\n"));
temp_ptr = (char *) strtok (recv_buffer, "\r\n");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server - no load information\n"));
else
load_1min = strtod (temp_ptr, NULL);
temp_ptr = (char *) strtok (NULL, "\r\n");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server after load 1\n"));
else
load_5min = strtod (temp_ptr, NULL);
temp_ptr = (char *) strtok (NULL, "\r\n");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server after load 5\n"));
else
load_15min = strtod (temp_ptr, NULL);
switch (vars_to_check) {
case LOAD1:
strcpy (temp_buffer, "1");
load = load_1min;
break;
case LOAD5:
strcpy (temp_buffer, "5");
load = load_5min;
break;
default:
strcpy (temp_buffer, "15");
load = load_15min;
break;
}
if (check_critical_value == TRUE && (load >= critical_value))
result = STATE_CRITICAL;
else if (check_warning_value == TRUE && (load >= warning_value))
result = STATE_WARNING;
die (result,
_("Load %s - %s-min load average = %0.2f"),
state_text(result),
temp_buffer,
load);
break;
case DPU:
if (result != STATE_OK)
die (result, _("Unknown error fetching disk data\n"));
for (temp_ptr = (char *) strtok (recv_buffer, " ");
temp_ptr != NULL;
temp_ptr = (char *) strtok (NULL, " ")) {
if (!strcmp (temp_ptr, disk_name)) {
found_disk = TRUE;
temp_ptr = (char *) strtok (NULL, "%");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server\n"));
else
percent_used_disk_space = strtoul (temp_ptr, NULL, 10);
break;
}
temp_ptr = (char *) strtok (NULL, "\r\n");
}
/* error if we couldn't find the info for the disk */
if (found_disk == FALSE)
die (STATE_CRITICAL,
"CRITICAL - Disk '%s' non-existent or not mounted",
disk_name);
if (check_critical_value == TRUE && (percent_used_disk_space >= critical_value))
result = STATE_CRITICAL;
else if (check_warning_value == TRUE && (percent_used_disk_space >= warning_value))
result = STATE_WARNING;
die (result, "Disk %s - %lu%% used on %s", state_text(result), percent_used_disk_space, disk_name);
break;
case NETSTAT:
if (result != STATE_OK)
die (result, _("Unknown error fetching network status\n"));
else
port_connections = strtod (recv_buffer, NULL);
if (check_critical_value == TRUE && (port_connections >= critical_value))
result = STATE_CRITICAL;
else if (check_warning_value == TRUE && (port_connections >= warning_value))
result = STATE_WARNING;
die (result,
_("Net %s - %d connection%s on port %d"),
state_text(result),
port_connections,
(port_connections == 1) ? "" : "s",
netstat_port);
break;
case PROCS:
if (result != STATE_OK)
die (result, _("Unknown error fetching process status\n"));
temp_ptr = (char *) strtok (recv_buffer, "(");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server\n"));
temp_ptr = (char *) strtok (NULL, ")");
if (temp_ptr == NULL)
die (STATE_CRITICAL, _("Invalid response from server\n"));
else
processes = strtod (temp_ptr, NULL);
if (check_critical_value == TRUE && (processes >= critical_value))
result = STATE_CRITICAL;
else if (check_warning_value == TRUE && (processes >= warning_value))
result = STATE_WARNING;
die (result,
_("Process %s - %d instance%s of %s running"),
state_text(result),
processes,
(processes == 1) ? "" : "s",
process_name);
break;
case UPTIME:
if (result != STATE_OK)
return result;
uptime_raw_hours = strtod (recv_buffer, NULL);
uptime_raw_minutes = (unsigned long) (uptime_raw_hours * 60.0);
if (check_critical_value == TRUE && (uptime_raw_minutes <= critical_value))
result = STATE_CRITICAL;
else if (check_warning_value == TRUE && (uptime_raw_minutes <= warning_value))
result = STATE_WARNING;
uptime_days = uptime_raw_minutes / 1440;
uptime_raw_minutes %= 1440;
uptime_hours = uptime_raw_minutes / 60;
uptime_raw_minutes %= 60;
uptime_minutes = uptime_raw_minutes;
die (result,
_("Uptime %s - Up %d days %d hours %d minutes"),
state_text(result),
uptime_days,
uptime_hours,
uptime_minutes);
break;
default:
die (STATE_UNKNOWN, _("Nothing to check!\n"));
break;
}
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
int option = 0;
static struct option longopts[] = {
{"port", required_argument, 0, 'p'},
{"timeout", required_argument, 0, 't'},
{"critical", required_argument, 0, 'c'},
{"warning", required_argument, 0, 'w'},
{"variable", required_argument, 0, 'v'},
{"hostname", required_argument, 0, 'H'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
/* no options were supplied */
if (argc < 2)
return ERROR;
/* backwards compatibility */
if (!is_option (argv[1])) {
server_address = argv[1];
argv[1] = argv[0];
argv = &argv[1];
argc--;
}
for (c = 1; c < argc; c++) {
if (strcmp ("-to", argv[c]) == 0)
strcpy (argv[c], "-t");
else if (strcmp ("-wv", argv[c]) == 0)
strcpy (argv[c], "-w");
else if (strcmp ("-cv", argv[c]) == 0)
strcpy (argv[c], "-c");
}
while (1) {
c = getopt_long (argc, argv, "+hVH:t:c:w:p:v:", longopts,
&option);
if (c == -1 || c == EOF || c == 1)
break;
switch (c) {
case '?': /* print short usage statement if args not parsable */
usage5 ();
case 'h': /* help */
print_help ();
exit (STATE_OK);
case 'V': /* version */
print_revision (progname, revision);
exit (STATE_OK);
case 'H': /* hostname */
server_address = optarg;
break;
case 'p': /* port */
if (is_intnonneg (optarg))
server_port = atoi (optarg);
else
die (STATE_UNKNOWN,
_("Server port an integer\n"));
break;
case 'v': /* variable */
if (strcmp (optarg, "LOAD") == 0) {
strcpy (send_buffer, "LOAD\r\nQUIT\r\n");
if (strcmp (optarg, "LOAD1") == 0)
vars_to_check = LOAD1;
else if (strcmp (optarg, "LOAD5") == 0)
vars_to_check = LOAD5;
else if (strcmp (optarg, "LOAD15") == 0)
vars_to_check = LOAD15;
}
else if (strcmp (optarg, "UPTIME") == 0) {
vars_to_check = UPTIME;
strcpy (send_buffer, "UPTIME\r\n");
}
else if (strstr (optarg, "PROC") == optarg) {
vars_to_check = PROCS;
process_name = strscpy (process_name, optarg + 4);
sprintf (send_buffer, "PROCESS %s\r\n", process_name);
}
else if (strstr (optarg, "NET") == optarg) {
vars_to_check = NETSTAT;
netstat_port = atoi (optarg + 3);
sprintf (send_buffer, "NETSTAT %d\r\n", netstat_port);
}
else if (strstr (optarg, "DPU") == optarg) {
vars_to_check = DPU;
strcpy (send_buffer, "DISKSPACE\r\n");
disk_name = strscpy (disk_name, optarg + 3);
}
else
return ERROR;
break;
case 'w': /* warning threshold */
warning_value = strtoul (optarg, NULL, 10);
check_warning_value = TRUE;
break;
case 'c': /* critical threshold */
critical_value = strtoul (optarg, NULL, 10);
check_critical_value = TRUE;
break;
case 't': /* timeout */
socket_timeout = atoi (optarg);
if (socket_timeout <= 0)
return ERROR;
}
}
return OK;
}
void
print_help (void)
{
char *myport;
asprintf (&myport, "%d", PORT);
print_revision (progname, revision);
printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
printf (COPYRIGHT, copyright, email);
printf ("%s\n", _("This plugin attempts to contact the Over-CR collector daemon running on the"));
printf ("%s\n", _("remote UNIX server in order to gather the requested system information."));
printf ("\n\n");
print_usage ();
printf (_(UT_HELP_VRSN));
printf (_(UT_HOST_PORT), 'p', myport);
printf (" %s\n", "-w, --warning=INTEGER");
printf (" %s\n", _("Threshold which will result in a warning status"));
printf (" %s\n", "-c, --critical=INTEGER");
printf (" %s\n", _("Threshold which will result in a critical status"));
printf (" %s\n", "-v, --variable=STRING");
printf (" %s\n", _("Variable to check. Valid variables include:"));
printf (" %s\n", _("LOAD1 = 1 minute average CPU load"));
printf (" %s\n", _("LOAD5 = 5 minute average CPU load"));
printf (" %s\n", _("LOAD15 = 15 minute average CPU load"));
printf (" %s\n", _("DPU<filesys> = percent used disk space on filesystem <filesys>"));
printf (" %s\n", _("PROC<process> = number of running processes with name <process>"));
printf (" %s\n", _("NET<port> = number of active connections on TCP port <port>"));
printf (" %s\n", _("UPTIME = system uptime in seconds"));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
printf (_(UT_VERBOSE));
printf ("\n");
printf ("%s\n", _("Notes:"));
printf ("%s\n", _("For the available options, the critical threshold value should always be"));
printf ("%s\n\n", _("higher than the warning threshold value, EXCEPT with the uptime variable"));
printf ("%s\n", _("This plugin requres that Eric Molitors' Over-CR collector daemon be"));
printf ("%s\n", _("running on the remote server."));
printf ("%s\n", " Over-CR can be downloaded from http://www.molitor.org/overcr");
printf ("%s\n", _("This plugin was tested with version 0.99.53 of the Over-CR collector"));
printf (_(UT_SUPPORT));
}
void
print_usage (void)
{
printf (_("Usage:"));
printf ("%s -H host [-p port] [-v variable] [-w warning] [-c critical] [-t timeout]\n", progname);
}
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