/usr/share/doc/libsnmp-session-perl/examples/cammer is in libsnmp-session-perl 1.14~git20130523.186a005-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 | #! /usr/bin/perl
# -*- mode: Perl -*-
##################################################################
# Cammer 1.0
##################################################################
# Created by Tobias Oetiker <oetiker@ee.ethz.ch>
#
# Cammer needs the address of your local cisco switch and the address
# of your router. With this it can produce a list of which machine
# is currently active on which Switch interface
##################################################################
# Distributed under the GNU copyleft
# Copyright 2000 by Tobias Oetiker
##################################################################
require 5.005;
use strict;
my $DEBUG = 0;
BEGIN {
# Automatic OS detection ... do NOT touch
if ( $^O =~ /^(?:(ms)?(dos|win(32|nt)?))/i ) {
$main::OS = 'NT';
$main::SL = '\\';
$main::PS = ';';
} elsif ( $^O =~ /^VMS$/i ) {
$main::OS = 'VMS';
$main::SL = '.';
$main::PS = ':';
} else {
$main::OS = 'UNIX';
$main::SL = '/';
$main::PS = ':';
}
}
use FindBin;
use lib "${FindBin::Bin}";
use lib "${FindBin::Bin}${main::SL}..${main::SL}lib${main::SL}mrtg2";
use SNMP_Session "0.78";
use BER "0.77";
use SNMP_util "0.77";
use Getopt::Long;
use Pod::Usage;
use Socket;
my %OID = ('vlanIndex' => [1,3,6,1,4,1,9,5,1,9,2,1,1],
'vmVlan' => [1,3,6,1,4,1,9,9,68,1,2,2,1,2],
'dot1dTpFdbPort' => [1,3,6,1,2,1,17,4,3,1,2],
'dot1dBasePortIfIndex' => [1,3,6,1,2,1,17,1,4,1,2],
'sysObjectID' => [1,3,6,1,2,1,1,2,0],
'CiscolocIfDescr' => [1,3,6,1,4,1,9,2,2,1,1,28],
'ifAlias' => [1,3,6,1,2,1,31,1,1,1,18],
'ifName' => [1,3,6,1,2,1,31,1,1,1,1],
'ipNetToMediaPhysAddress' => [1,3,6,1,2,1,4,22,1,2],
);
sub main {
my %opt;
options(\%opt);
# which vlans do exist on the device
my @vlans;
my $vlani;
my %vlan;
my $sws = SNMPv2c_Session->open ($opt{sw},$opt{swco},161)
|| die "Opening SNMP_Session\n";
warn "* Gather VLAN index Table from Switch\n";
my $sysdesc = (snmpget($opt{swco}.'@'.$opt{sw},'sysDescr'))[0];
if ($sysdesc =~ /2900/){
warn "* Going into Cisco 2900 Mode\n";
$sws->map_table_4 ( [$OID{'vmVlan'}],
sub { my($x,$value) = pretty(@_);
$vlan{$x} = $value; # catalyst 2900
print "if: $x, vlan: $value\n" if $DEBUG;
if (not scalar grep {$_ eq $value} @vlans) {
push @vlans, $value;
print "vlan: $value\n" if $DEBUG;
}
}
,100);
} else {
$sws->map_table_4 ([$OID{'vlanIndex'}],
sub {
my($x,$value) = pretty(@_);
push @vlans, $value;
print "vlan: $value\n" if $DEBUG;
}
,100 );
}
# which ifNames
my %name;
warn "* Gather Interface Name Table from Switch\n";
$sws->map_table_4 ([$OID{'ifName'}],
sub { my($if,$name) = pretty(@_);
print "if: $if, name: $name\n" if $DEBUG;
$name{$if}=$name;
}
,100);
$sws->close();
# get mac to ip from router
my $ros = SNMPv2c_Session->open ($opt{ro},$opt{roco},161)
|| die "Opening SNMP_Session\n";
my %ip;
warn "* Gather Arp Table from Router\n";
$ros->map_table_4 ([$OID{'ipNetToMediaPhysAddress'}],
sub {
my($ip,$mac) = pretty(@_);
$mac = unpack 'H*', pack 'a*',$mac;
$mac =~ s/../$&:/g;
$mac =~ s/.$//;
$ip =~ s/^.+?\.//;
push @{$ip{$mac}}, $ip;
print "ip: $ip, mac: $mac\n" if $DEBUG;
}
,100);
$ros->close();
# walk CAM table for each VLAN
my %if;
my %port;
warn "* Gather Mac 2 Port and Port 2 Interface table for all VLANS\n";
foreach my $vlan (@vlans){
# catalist 2900 does not use com@vlan hack
my $sws = SNMPv2c_Session->open ($opt{sw},$opt{swco}.'@'.$vlan,161)
|| die "Opening SNMP_Session\n";
$sws->map_table_4 ([$OID{'dot1dTpFdbPort'}],
sub {
my($mac,$port) = pretty(@_);
next if $port == 0;
$mac = sprintf "%02x:%02x:%02x:%02x:%02x:%02x", (split /\./, $mac);
print "mac: $mac,port: $port\n" if $DEBUG;
$port{$vlan}{$mac}=$port;
}
,100);
$sws->map_table_4 ( [$OID{'dot1dBasePortIfIndex'}],
sub { my($port,$if) = pretty(@_);
next if $port == 0;
print "port: $port, if: $if\n" if $DEBUG;
$if{$vlan}{$port} = $if;
}
,100);
$sws->close();
}
my %output;
foreach my $vlan (@vlans){
foreach my $mac (keys %{$port{$vlan}}){
my @ip = $ip{$mac} ? @{$ip{$mac}} : ();
my @host;
foreach my $ip (@ip) {
my $host = gethostbyaddr(pack('C4',split(/\./,$ip)),AF_INET);
$host =~ s/\.ethz\.ch//;
push @host, ($host or $ip);
}
my $name = $name{$if{$vlan}{$port{$vlan}{$mac}}};
my $truevlan = $vlan eq 'none' ? $vlan{$if{$vlan}{$port{$vlan}{$mac}}} : $vlan;
my $quest = scalar @ip > 1 ? "(Multi If Host)":"";
push @{$output{$name}}, sprintf "%4s %-17s %-15s %s %s",$truevlan,$mac,$ip[0],$host[0],$quest;
}
}
foreach my $name (sort keys %output){
foreach my $line (@{$output{$name}}) {
printf "%-4s %s\n", $name , $line;
}
}
}
main;
exit 0;
sub options () {
my $opt = shift;
GetOptions( $opt,
'help|?',
'man') or pod2usage(2);
pod2usage(-verbose => 1) if $$opt{help} or scalar @ARGV != 2;
$opt->{sw} = shift @ARGV;
$opt->{ro} = shift @ARGV;
pod2usage(-exitstatus => 0, -verbose => 2) if $$opt{man};
$opt->{sw} =~ /^(.+)@(.+?)$/;
$opt->{sw} = $2;
$opt->{swco} = $1;
$opt->{ro} =~ /^(.+)@(.+?)$/;
$opt->{ro} = $2;
$opt->{roco} = $1;
}
sub pretty(@){
my $index = shift;
my @ret = ($index);
foreach my $x (@_){
push @ret, pretty_print($x);
};
return @ret;
}
__END__
=head1 NAME
cammer - list switch ports with associated IP-addresses
=head1 SYNOPSIS
cammer [--help|--man] community@switch community@router
=head1 DESCRIPTION
B<Cammer> is a script which polls a switch and a router in order to produce
a list of machines attached (and currently online) at each port of the
switch.
=head1 COPYRIGHT
Copyright (c) 2000 ETH Zurich, All rights reserved.
=head1 LICENSE
This script is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
=head1 AUTHOR
Tobias Oetiker E<lt>oetiker@ee.ethz.chE<gt>
=cut
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