Fix #744

centreon-plugins/network/cisco/standard/snmp/plugin.pm

@@ -31,6 +31,7 @@ sub new {
 
     $self->{version} = '1.0';
     %{$self->{modes}} = (
+        'arp'                  => 'snmp_standard::mode::arp',
         'configuration'        => 'centreon::common::cisco::standard::snmp::mode::configuration',
         'cpu'                  => 'centreon::common::cisco::standard::snmp::mode::cpu',
         'environment'          => 'centreon::common::cisco::standard::snmp::mode::environment',

centreon-plugins/os/linux/snmp/plugin.pm

@@ -31,6 +31,7 @@ sub new {
 
     $self->{version} = '0.1';
     %{$self->{modes}} = (
+        'arp'              => 'snmp_standard::mode::arp',
         'cpu'              => 'snmp_standard::mode::cpu',
         'cpu-detailed'     => 'snmp_standard::mode::cpudetailed',
         'diskio'           => 'snmp_standard::mode::diskio',

centreon-plugins/snmp_standard/mode/arp.pm

@@ -0,0 +1,157 @@
+#
+# Copyright 2019 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package snmp_standard::mode::arp;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'global', type => 0, message_separator => ' - ' },
+    ];
+
+    $self->{maps_counters}->{global} = [
+        { label => 'total-entries', nlabel => 'arp.total.entries.count', set => {
+                key_values => [ { name => 'total' } ],
+                output_template => 'total entries %s',
+                perfdatas => [
+                    { value => 'total_absolute', template => '%s', min => 0 },
+                ],
+            }
+        },
+        { label => 'duplicate-macaddr', nlabel => 'arp.duplicate.macaddr.count', set => {
+                key_values => [ { name => 'duplicate_macaddress' } ],
+                output_template => 'duplicate mac address %s',
+                perfdatas => [
+                    { value => 'duplicate_macaddress_absolute', template => '%s', min => 0 },
+                ],
+            }
+        },
+        { label => 'duplicate-ipaddr', nlabel => 'arp.duplicate.ipaddr.count', set => {
+                key_values => [ { name => 'duplicate_ipaddress' } ],
+                output_template => 'duplicate ip address %s',
+                perfdatas => [
+                    { value => 'duplicate_ipaddress_absolute', template => '%s', min => 0 },
+                ],
+            }
+        },
+    ];
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments => {
+    });
+
+    return $self;
+}
+
+sub check_ipNetToMediaTable {
+    my ($self, %options) = @_;
+
+    my $oid_ipNetToMediaPhysAddress = '.1.3.6.1.2.1.4.22.1.2';
+    my $result = $options{snmp}->get_table(oid => $oid_ipNetToMediaPhysAddress);
+    return if (scalar(keys %$result) <= 0);
+    
+    $self->check_arp(result => $result, oid => $oid_ipNetToMediaPhysAddress);
+}
+
+sub check_atTable {
+    my ($self, %options) = @_;
+
+    return if (defined($self->{global}));
+
+    my $oid_atPhysAddress = '.1.3.6.1.2.1.4.22.1.2';
+    my $result = $options{snmp}->get_table(oid => $oid_atPhysAddress, nothing_quit => 1);
+    $self->check_arp(result => $result, oid => $oid_atPhysAddress);
+}
+
+sub check_arp {
+    my ($self, %options) = @_;
+
+    $self->{global} = { total => 0, duplicate_macaddress => 0, duplicate_ipaddress => 0 };
+    my $duplicate = { mac => { }, ip => {} };
+    foreach (keys %{$options{result}}) {
+        $self->{global}->{total}++;
+        my $mac = join(':', unpack('(H2)*', $options{result}->{$_}));
+        /^$options{oid}\.(\d+)\.(.*)$/;
+        $duplicate->{ip}->{$2} = [] if (!defined($duplicate->{ip}->{$2}));
+        push @{$duplicate->{ip}->{$2}}, $mac;
+        $duplicate->{mac}->{$mac} = [] if (!defined($duplicate->{mac}->{$mac}));
+        push @{$duplicate->{mac}->{$mac}}, $2;
+    }
+
+    $self->test_duplicate(duplicate => $duplicate);
+}
+
+sub test_duplicate {
+    my ($self, %options) = @_;
+
+    foreach (keys %{$options{duplicate}->{ip}}) {
+        next if (scalar(@{$options{duplicate}->{ip}->{$_}}) == 1);
+        $self->{global}->{duplicate_ipaddress}++;
+        $self->{output}->output_add(long_msg => 
+            sprintf("ip address '%s' ==> mac address: %s", $_, join(' ',  @{$options{duplicate}->{ip}->{$_}}))
+        );
+    }
+
+    foreach (keys %{$options{duplicate}->{mac}}) {
+        next if (scalar(@{$options{duplicate}->{mac}->{$_}}) == 1);
+        $self->{global}->{duplicate_macaddress}++;
+        $self->{output}->output_add(long_msg => 
+            sprintf("mac address '%s' ==> ip address: %s", $_, join(' ',  @{$options{duplicate}->{mac}->{$_}}))
+        );
+    }
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    $self->check_ipNetToMediaTable(%options);
+    $self->check_atTable(%options);
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check arp table.
+
+=over 8
+
+=item B<--warning-*> B<--critical-*>
+
+Thresholds.
+Can be: 'total-entries', 'duplicate-macaddr', 'duplicate-ipaddr'. 
+
+=back
+
+=cut