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pkg-monitoring-plugins/plugins/check_fping.c

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/******************************************************************************
*
* Nagios check_fping plugin
*
* License: GPL
* Copyright (c) 1999-2006 nagios-plugins team
*
* Last Modified: $Date: 2007-01-28 21:46:41 +0000 (Sun, 28 Jan 2007) $
*
* Description:
*
* This file contains the check_disk plugin
*
* This plugin will use the fping command to ping the specified host for a fast check
*
*
* 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_fping.c 1590 2007-01-28 21:46:41Z hweiss $
******************************************************************************/
const char *progname = "check_fping";
const char *revision = "$Revision: 1590 $";
const char *copyright = "2000-2006";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "popen.h"
#include "netutils.h"
#include "utils.h"
enum {
PACKET_COUNT = 1,
PACKET_SIZE = 56,
PL = 0,
RTA = 1
};
int textscan (char *buf);
int process_arguments (int, char **);
int get_threshold (char *arg, char *rv[2]);
void print_help (void);
void print_usage (void);
char *server_name = NULL;
int packet_size = PACKET_SIZE;
int packet_count = PACKET_COUNT;
int verbose = FALSE;
int cpl;
int wpl;
double crta;
double wrta;
int cpl_p = FALSE;
int wpl_p = FALSE;
int crta_p = FALSE;
int wrta_p = FALSE;
int
main (int argc, char **argv)
{
/* normaly should be int result = STATE_UNKNOWN; */
int status = STATE_UNKNOWN;
char *server = NULL;
char *command_line = NULL;
char *input_buffer = NULL;
input_buffer = malloc (MAX_INPUT_BUFFER);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
server = strscpy (server, server_name);
/* compose the command */
asprintf (&command_line, "%s -b %d -c %d %s", PATH_TO_FPING,
packet_size, packet_count, server);
if (verbose)
printf ("%s\n", command_line);
/* run the command */
child_process = spopen (command_line);
if (child_process == NULL) {
printf (_("Could not open pipe: %s\n"), command_line);
return STATE_UNKNOWN;
}
child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
if (child_stderr == NULL) {
printf (_("Could not open stderr for %s\n"), command_line);
}
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
if (verbose)
printf ("%s", input_buffer);
status = max_state (status, textscan (input_buffer));
}
/* If we get anything on STDERR, at least set warning */
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
status = max_state (status, STATE_WARNING);
if (verbose)
printf ("%s", input_buffer);
status = max_state (status, textscan (input_buffer));
}
(void) fclose (child_stderr);
/* close the pipe */
if (spclose (child_process))
/* need to use max_state not max */
status = max_state (status, STATE_WARNING);
printf ("FPING %s - %s\n", state_text (status), server_name);
return status;
}
int
textscan (char *buf)
{
char *rtastr = NULL;
char *losstr = NULL;
double loss;
double rta;
int status = STATE_UNKNOWN;
if (strstr (buf, "not found")) {
die (STATE_CRITICAL, _("FPING UNKNOW - %s not found\n"), server_name);
}
else if (strstr (buf, "is unreachable") || strstr (buf, "Unreachable")) {
die (STATE_CRITICAL, _("FPING CRITICAL - %s is unreachable\n"),
"host");
}
else if (strstr (buf, "is down")) {
die (STATE_CRITICAL, _("FPING CRITICAL - %s is down\n"), server_name);
}
else if (strstr (buf, "is alive")) {
status = STATE_OK;
}
else if (strstr (buf, "xmt/rcv/%loss") && strstr (buf, "min/avg/max")) {
losstr = strstr (buf, "=");
losstr = 1 + strstr (losstr, "/");
losstr = 1 + strstr (losstr, "/");
rtastr = strstr (buf, "min/avg/max");
rtastr = strstr (rtastr, "=");
rtastr = 1 + index (rtastr, '/');
loss = strtod (losstr, NULL);
rta = strtod (rtastr, NULL);
if (cpl_p == TRUE && loss > cpl)
status = STATE_CRITICAL;
else if (crta_p == TRUE && rta > crta)
status = STATE_CRITICAL;
else if (wpl_p == TRUE && loss > wpl)
status = STATE_WARNING;
else if (wrta_p == TRUE && rta > wrta)
status = STATE_WARNING;
else
status = STATE_OK;
die (status,
_("FPING %s - %s (loss=%.0f%%, rta=%f ms)|%s %s\n"),
state_text (status), server_name, loss, rta,
perfdata ("loss", (long int)loss, "%", wpl_p, wpl, cpl_p, cpl, TRUE, 0, TRUE, 100),
fperfdata ("rta", rta/1.0e3, "s", wrta_p, wrta/1.0e3, crta_p, crta/1.0e3, TRUE, 0, FALSE, 0));
}
else if(strstr (buf, "xmt/rcv/%loss") ) {
/* no min/max/avg if host was unreachable in fping v2.2.b1 */
losstr = strstr (buf, "=");
losstr = 1 + strstr (losstr, "/");
losstr = 1 + strstr (losstr, "/");
loss = strtod (losstr, NULL);
if (atoi(losstr) == 100)
status = STATE_CRITICAL;
else if (cpl_p == TRUE && loss > cpl)
status = STATE_CRITICAL;
else if (wpl_p == TRUE && loss > wpl)
status = STATE_WARNING;
else
status = STATE_OK;
/* loss=%.0f%%;%d;%d;0;100 */
die (status, _("FPING %s - %s (loss=%.0f%% )|%s\n"),
state_text (status), server_name, loss ,
perfdata ("loss", (long int)loss, "%", wpl_p, wpl, cpl_p, cpl, TRUE, 0, TRUE, 100));
}
else {
status = max_state (status, STATE_WARNING);
}
return status;
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
char *rv[2];
int option = 0;
static struct option longopts[] = {
{"hostname", required_argument, 0, 'H'},
{"critical", required_argument, 0, 'c'},
{"warning", required_argument, 0, 'w'},
{"bytes", required_argument, 0, 'b'},
{"number", required_argument, 0, 'n'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
rv[PL] = NULL;
rv[RTA] = NULL;
if (argc < 2)
return ERROR;
if (!is_option (argv[1])) {
server_name = argv[1];
argv[1] = argv[0];
argv = &argv[1];
argc--;
}
while (1) {
c = getopt_long (argc, argv, "+hVvH:c:w:b:n:", 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 'v': /* verbose mode */
verbose = TRUE;
break;
case 'H': /* hostname */
if (is_host (optarg) == FALSE) {
usage2 (_("Invalid hostname/address"), optarg);
}
server_name = strscpy (server_name, optarg);
break;
case 'c':
get_threshold (optarg, rv);
if (rv[RTA]) {
crta = strtod (rv[RTA], NULL);
crta_p = TRUE;
rv[RTA] = NULL;
}
if (rv[PL]) {
cpl = atoi (rv[PL]);
cpl_p = TRUE;
rv[PL] = NULL;
}
break;
case 'w':
get_threshold (optarg, rv);
if (rv[RTA]) {
wrta = strtod (rv[RTA], NULL);
wrta_p = TRUE;
rv[RTA] = NULL;
}
if (rv[PL]) {
wpl = atoi (rv[PL]);
wpl_p = TRUE;
rv[PL] = NULL;
}
break;
case 'b': /* bytes per packet */
if (is_intpos (optarg))
packet_size = atoi (optarg);
else
usage (_("Packet size must be a positive integer"));
break;
case 'n': /* number of packets */
if (is_intpos (optarg))
packet_count = atoi (optarg);
else
usage (_("Packet count must be a positive integer"));
break;
}
}
if (server_name == NULL)
usage4 (_("Hostname was not supplied"));
return OK;
}
int
get_threshold (char *arg, char *rv[2])
{
char *arg1 = NULL;
char *arg2 = NULL;
arg1 = strscpy (arg1, arg);
if (strpbrk (arg1, ",:"))
arg2 = 1 + strpbrk (arg1, ",:");
if (arg2) {
arg1[strcspn (arg1, ",:")] = 0;
if (strstr (arg1, "%") && strstr (arg2, "%"))
die (STATE_UNKNOWN,
_("%s: Only one threshold may be packet loss (%s)\n"), progname,
arg);
if (!strstr (arg1, "%") && !strstr (arg2, "%"))
die (STATE_UNKNOWN,
_("%s: Only one threshold must be packet loss (%s)\n"),
progname, arg);
}
if (arg2 && strstr (arg2, "%")) {
rv[PL] = arg2;
rv[RTA] = arg1;
}
else if (arg2) {
rv[PL] = arg1;
rv[RTA] = arg2;
}
else if (strstr (arg1, "%")) {
rv[PL] = arg1;
}
else {
rv[RTA] = arg1;
}
return OK;
}
void
print_help (void)
{
print_revision (progname, revision);
printf ("Copyright (c) 1999 Didi Rieder <adrieder@sbox.tu-graz.ac.at>\n");
printf (COPYRIGHT, copyright, email);
printf ("%s\n", _("This plugin will use the fping command to ping the specified host for a fast check"));
printf ("%s\n", _("Note that it is necessary to set the suid flag on fping."));
printf ("\n\n");
print_usage ();
printf (_(UT_HELP_VRSN));
printf (" %s\n", "-H, --hostname=HOST");
printf (" %s\n", _("name or IP Address of host to ping (IP Address bypasses name lookup, reducing system load)"));
printf (" %s\n", "-w, --warning=THRESHOLD");
printf (" %s\n", _("warning threshold pair"));
printf (" %s\n", "-c, --critical=THRESHOLD");
printf (" %s\n", _("critical threshold pair"));
printf (" %s\n", "-b, --bytes=INTEGER");
printf (" %s\n", _("size of ICMP packet (default: %d)"),PACKET_SIZE);
printf (" %s\n", "-n, --number=INTEGER");
printf (" %s\n", _("number of ICMP packets to send (default: %d)"),PACKET_COUNT);
printf (_(UT_VERBOSE));
printf ("\n");
printf (" %s\n", _("THRESHOLD is <rta>,<pl>%% where <rta> is the round trip average travel time (ms)"));
printf (" %s\n", _("which triggers a WARNING or CRITICAL state, and <pl> is the percentage of"));
printf (" %s\n", _("packet loss to trigger an alarm state."));
printf (_(UT_SUPPORT));
}
void
print_usage (void)
{
printf (_("Usage:"));
printf (" %s <host_address> -w limit -c limit [-b size] [-n number]\n", progname);
}
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