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-rw-r--r--plugins-scripts/check_ifoperstatus.pl255
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diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
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+#!/usr/local/bin/perl -w
+#
+# check_ifoperstatus.pl - nagios plugin
+#
+# Copyright (C) 2000 Christoph Kron
+# Modified 5/2002 to conform to updated Nagios Plugin Guidelines
+# Added support for named interfaces per Valdimir Ivaschenko (S. Ghosh)
+#
+# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net
+#
+# 11.01.2000 Version 1.0
+# $Id$
+
+use POSIX;
+use strict;
+use lib utils.pm ;
+use utils qw($TIMEOUT %ERRORS &print_revision &support);
+
+use Net::SNMP;
+use Getopt::Long;
+&Getopt::Long::config('bundling');
+
+my $PROGNAME = "check_ifoperstatus";
+my $status;
+my %ifOperStatus = ('1','up',
+ '2','down',
+ '3','testing',
+ '4','unknown',
+ '5','dormant',
+ '6','notPresent');
+
+my $state = "UNKNOWN";
+my $answer = "";
+my $snmpkey = 0;
+my $community = "public";
+my $port = 161;
+my @snmpoids;
+my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8';
+my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
+my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
+my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
+my $hostname;
+my $session;
+my $error;
+my $response;
+my $snmp_version = 1 ;
+my $ifXTable;
+my $opt_h ;
+my $opt_V ;
+my $ifdescr;
+my $key;
+
+
+
+# Just in case of problems, let's not hang Nagios
+$SIG{'ALRM'} = sub {
+ print ("ERROR: No snmp response from $hostname (alarm)\n");
+ exit $ERRORS{"UNKNOWN"};
+};
+#alarm($TIMEOUT);
+
+
+$status = GetOptions(
+ "V" => \$opt_V, "version" => \$opt_V,
+ "h" => \$opt_h, "help" => \$opt_h,
+ "v=i" => \$snmp_version, "snmp_version=i" => \$snmp_version,
+ "C=s" =>\$community, "community=s" => \$community,
+ "k=i" =>\$snmpkey, "key=i",\$snmpkey,
+ "d=s" =>\$ifdescr, "descr=s" => \$ifdescr,
+ "p=i" =>\$port, "port=i",\$port,
+ "H=s" => \$hostname, "hostname=s" => \$hostname,
+ "I" => \$ifXTable, "ifmib" => \$ifXTable);
+
+
+
+if ($status == 0)
+{
+ print_help();
+ exit $ERRORS{'OK'};
+}
+
+if ($opt_V) {
+ print_revision($PROGNAME,'$Revision$ ');
+ exit $ERRORS{'OK'};
+}
+
+if ($opt_h) {
+ print_help();
+ exit $ERRORS{'OK'};
+}
+
+if (! utils::is_hostname($hostname)){
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+}
+
+
+if ( $snmp_version =~ /[12]/ ) {
+ ($session, $error) = Net::SNMP->session(
+ -hostname => $hostname,
+ -community => $community,
+ -port => $port,
+ -version => $snmp_version
+ );
+
+ if (!defined($session)) {
+ $state='UNKNOWN';
+ $answer=$error;
+ print ("$state: $answer");
+ exit $ERRORS{$state};
+ }
+}elsif ( $snmp_version =~ /3/ ) {
+ $state='UNKNOWN';
+ print ("$state: No support for SNMP v3 yet\n");
+ exit $ERRORS{$state};
+}else{
+ $state='UNKNOWN';
+ print ("$state: No support for SNMP v$snmp_version yet\n");
+ exit $ERRORS{$state};
+}
+
+if (defined $ifdescr) {
+ # escape "/" in ifdescr - very common in the Cisco world
+ $ifdescr =~ s/\//\\\//g;
+
+ $status=fetch_ifdescr(); # if using on device with large number of interfaces
+ # recommend use of SNMP v2 (get-bulk)
+ if ($status==0) {
+ $state = "UNKNOWN";
+ printf "$state: could not retrive ifIndex - $status-$snmpkey\n";
+ $session->close;
+ exit $ERRORS{$state};
+ }
+}
+if ( $snmpkey == 0 ) {
+ printf "ifIndex key cannot be 0\n";
+ usage();
+ exit $ERRORS{'UNKNOWN'};
+}
+
+ $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8' . "." . $snmpkey;
+ $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2' . "." . $snmpkey;
+ $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18' . "." . $snmpkey ;
+
+
+push(@snmpoids,$snmpIfOperStatus);
+push(@snmpoids,$snmpIfDescr);
+push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
+
+ if (!defined($response = $session->get_request(@snmpoids))) {
+ $answer=$session->error;
+ $session->close;
+ $state = 'CRITICAL';
+ print ("$state: $answer for ifIndex $snmpkey\n");
+ exit $ERRORS{$state};
+ }
+
+ $answer = sprintf("host '%s', %s(%s) is %s\n",
+ $hostname,
+ $response->{$snmpIfDescr},
+ $snmpkey,
+ $ifOperStatus{$response->{$snmpIfOperStatus}}
+ );
+
+ $session->close;
+
+ if ( $response->{$snmpIfOperStatus} == 1 ) {
+ $state = 'OK';
+ }
+ else {
+ $state = 'CRITICAL';
+ }
+
+print ("$state: $answer");
+exit $ERRORS{$state};
+
+
+sub fetch_ifdescr {
+ if (!defined ($response = $session->get_table($snmpIfDescr))) {
+ $answer=$session->error;
+ $session->close;
+ $state = 'CRITICAL';
+ printf ("$state: $answer for $snmpIfDescr with snmp version $snmp_version\n");
+ $session->close;
+ exit $ERRORS{$state};
+ }
+
+ foreach $key ( keys %{$response}) {
+ if ($response->{$key} =~ /$ifdescr/) {
+ $key =~ /.*\.(\d+)$/;
+ $snmpkey = $1;
+ #print "$ifdescr = $key / $snmpkey \n"; #debug
+ }
+ }
+ unless (defined $snmpkey) {
+ $session->close;
+ $state = 'CRITICAL';
+ printf "$state: Could not match $ifdescr on $hostname\n";
+ exit $ERRORS{$state};
+ }
+
+ return $snmpkey;
+}
+
+sub usage {
+ printf "\nMissing arguments!\n";
+ printf "\n";
+ printf "usage: \n";
+ printf "check_ifoperstatus -k <IF_KEY> -H <HOSTNAME> [-C <community>]\n";
+ printf "Copyright (C) 2000 Christoph Kron\n";
+ printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
+ printf "This programm is licensed under the terms of the ";
+ printf "GNU General Public License\n(check source code for details)\n";
+ printf "\n\n";
+ exit $ERRORS{"UNKNOWN"};
+}
+
+sub print_help {
+ printf "check_ifoperstatus plugin for Nagios monitors operational \n";
+ printf "status of a particular network interface on the target host\n";
+ printf "\nUsage:\n";
+ printf " -H (--hostname) Hostname to query - (required)\n";
+ printf " -C (--community) SNMP read community (defaults to public,\n";
+ printf " used with SNMP v1 and v2c\n";
+ printf " -v (--snmp_version) 1 for SNMP v1 (default)\n";
+ printf " 2 for SNMP v2c\n";
+ printf " SNMP v2c will use get_bulk for less overhead\n";
+ printf " if monitoring with -d\n";
+ printf " -k (--key) SNMP ifIndex value\n";
+ printf " -d (--descr) SNMP ifDescr value\n";
+ printf " -p (--port) SNMP port (default 161)\n";
+ printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
+ printf " you don't know what this is.\n";
+ printf " -V (--version) Plugin version\n";
+ printf " -h (--help) usage help \n\n";
+ printf " -k or -d must be specified\n\n";
+ print_revision($PROGNAME, '$Revision$');
+
+}
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