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|
#! /usr/bin/perl
use strict;
use warnings;
use DBI;
use Net::Telnet;
use Data::Dumper;
use FixedSNMP;
use FileHandle;
package nms;
use base 'Exporter';
our @EXPORT = qw(switch_disconnect switch_connect switch_exec switch_timeout db_connect);
BEGIN {
require "config.pm";
eval {
require "config.local.pm";
};
# $SNMP::debugging = 1;
SNMP::initMib();
SNMP::loadModules('SNMPv2-MIB');
SNMP::loadModules('ENTITY-MIB');
SNMP::loadModules('IF-MIB');
#SNMP::loadModules('LLDP-MIB');
}
sub db_connect {
my $connstr = "dbi:Pg:dbname=" . $nms::config::db_name;
$connstr .= ";host=" . $nms::config::db_host unless (!defined($nms::config::db_host));
my $dbh = DBI->connect($connstr,
$nms::config::db_username,
$nms::config::db_password)
or die "Couldn't connect to database";
return $dbh;
}
sub switch_connect($) {
my ($ip) = @_;
my $dumplog = FileHandle->new;
$dumplog->open(">>/tmp/dumplog-queue") or die "/tmp/dumplog-queue: $!";
$dumplog->print("\n\nConnecting to " . $ip . "\n\n");
my $inputlog = FileHandle->new;
$inputlog->open(">>/tmp/inputlog-queue") or die "/tmp/inputlog-queue: $!";
$inputlog->print("\n\nConnecting to " . $ip . "\n\n");
my $conn = new Net::Telnet( Timeout => $nms::config::telnet_timeout,
Dump_Log => $dumplog,
Input_Log => $inputlog,
Errmode => 'return',
Prompt => '/DGS-3100# (?!\x1b\[K)/');
my $ret = $conn->open( Host => $ip);
if (!$ret || $ret != 1) {
return (undef);
}
# Handle login with and without password
print "Logging in without password\n";
$conn->waitfor('/User ?Name:/');
$conn->print('admin');
my (undef, $match) = $conn->waitfor('/DGS-3100#|Password:/');
die 'Unexpected prompt after login attempt' if (not defined $match);
if ($match eq 'Password:') {
$conn->print('gurbagurba'); # Dette passordet skal feile
$conn->waitfor('/User ?Name:/');
$conn->print($nms::config::dlink1g_user);
my (undef, $match) = $conn->waitfor('/DGS-3100#|Password:/');
if ($match eq 'Password:') {
$conn->cmd($nms::config::dlink1g_passwd);
}
}
return ($conn);
}
# Send a command to switch and return the data recvied from the switch
sub switch_exec {
my ($cmd, $conn, $print) = @_;
# Send the command and get data from switch
my @data;
if (defined($print)) {
$conn->print($cmd);
return;
} else {
@data = $conn->cmd($cmd);
print $conn->errmsg, "\n";
}
return @data;
# my @lines = ();
# foreach my $line (@data) {
# # Remove escape-7 sequence
## $line =~ s/\x1b\x37//g;
# push (@lines, $line);
# }
# return @lines;
}
sub switch_timeout {
my ($timeout, $conn) = @_;
$conn->timeout($timeout);
return ('Set timeout to ' . $timeout);
}
sub switch_disconnect {
my ($conn) = @_;
$conn->close;
}
sub snmp_open_session {
my ($ip, $community) = @_;
my %options = (UseEnums => 1);
if ($ip =~ /:/) {
$options{'DestHost'} = "udp6:$ip";
} else {
$options{'DestHost'} = "udp:$ip";
}
if ($community =~ /^snmpv3:(.*)$/) {
my ($username, $authprotocol, $authpassword, $privprotocol, $privpassword) = split /\//, $1;
$options{'SecName'} = $username;
$options{'SecLevel'} = 'authNoPriv';
$options{'AuthProto'} = $authprotocol;
$options{'AuthPass'} = $authpassword;
if (defined($privprotocol) && defined($privpassword)) {
$options{'SecLevel'} = 'authPriv';
$options{'PrivProto'} = $privprotocol;
$options{'PrivPass'} = $privpassword;
}
$options{'Version'} = 3;
} else {
$options{'Version'} = 2;
}
my $session = SNMP::Session->new(%options);
if (defined($session) && defined($session->getnext('sysDescr'))) {
return $session;
} else {
die 'Could not open SNMP session';
}
}
# Not currently in use; kept around for reference.
sub fetch_multi_snmp {
my ($session, @oids) = @_;
my %results = ();
# Do bulk reads of 40 and 40; seems to be about the right size for 1500-byte packets.
for (my $i = 0; $i < scalar @oids; $i += 40) {
my $end = $i + 39;
$end = $#oids if ($end > $#oids);
my @oid_slice = @oids[$i..$end];
my $localresults = $session->get_request(-varbindlist => \@oid_slice);
return undef if (!defined($localresults));
while (my ($key, $value) = each %$localresults) {
$results{$key} = $value;
}
}
return \%results;
}
1;
|
