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|
#! /usr/bin/perl
# sesse testing
use strict;
use warnings;
use lib '../include';
use nms;
use Net::CIDR;
my $dbh = nms::db_connect();
my $coregws = $dbh->prepare("SELECT switch, ip, community, sysname FROM switches WHERE switchtype <> 'dlink3100'")
or die "Can't prepare query: $!";
$coregws->execute;
my %switch_id = (); # sysname -> switch database ID
my %loopbacks = (); # sysname -> primary address
my %loop_ipv6 = (); # sysname -> primary address
my %map = (); # CIDR -> (sysname,ip)*
my %lldpneigh = (); # sysname -> sysname -> 1
while (my $ref = $coregws->fetchrow_hashref) {
my $sysname = $ref->{'sysname'};
$switch_id{$sysname} = $ref->{'switch'};
print "$sysname...\n";
my $snmp;
eval {
$snmp = nms::snmp_open_session($ref->{'ip'}, $ref->{'community'});
};
warn $@ if $@;
next if not $snmp;
my $routes = $snmp->gettable('ipCidrRouteTable');
my $ifs = $snmp->gettable('ifTable');
my $addrs = $snmp->gettable('ipAddrTable');
my $lldp = $snmp->gettable('lldpRemTable');
my $ipaddresstable = $snmp->gettable('ipAddressTable');
# Find all direct routes we have, and that we also have an address in.
# These are our linknet candidates.
for my $route (values %$routes) {
next if ($route->{'ipCidrRouteMask'} eq '255.255.255.255');
next if ($route->{'ipCidrRouteNextHop'} ne '0.0.0.0');
my $cidr = Net::CIDR::addrandmask2cidr($route->{'ipCidrRouteDest'}, $route->{'ipCidrRouteMask'});
for my $addr (values %$addrs) {
my $ip = $addr->{'ipAdEntAddr'};
if (Net::CIDR::cidrlookup($ip, $cidr)) {
push @{$map{$cidr}}, [ $sysname, $ip ];
}
}
}
# Find the first loopback address.
my %loopbacks_this_switch = ();
for my $addr (values %$addrs) {
my $ifdescr = $ifs->{$addr->{'ipAdEntIfIndex'}}->{'ifDescr'};
next unless $ifdescr =~ /^Loop/;
$loopbacks_this_switch{$ifdescr} = $addr->{'ipAdEntAddr'};
}
for my $if (sort keys %loopbacks_this_switch) {
$loopbacks{$sysname} = $loopbacks_this_switch{$if};
last;
}
my %loopbacks_ipv6_this_switch = ();
for my $addr (values %$ipaddresstable) {
next if not $addr->{'ipAddressAddrType'} == 2; # Only IPv6 addresses please.
my $ifdescr = $ifs->{$addr->{'ipAddressIfIndex'}}->{'ifDescr'};
next unless $ifdescr =~ /^Loop/;
$loopbacks_ipv6_this_switch{$ifdescr} = nms::convert_ipv6( $addr->{'ipAddressAddr'} );
}
for my $if (sort keys %loopbacks_ipv6_this_switch) {
$loop_ipv6{$sysname} = $loopbacks_ipv6_this_switch{$if};
last;
}
# Find all LLDP neighbors.
for my $neigh (values %$lldp) {
$lldpneigh{$sysname}{$neigh->{'lldpRemSysName'}} = 1;
}
}
# print Dumper(\%switch_id);
# print Dumper(\%map);
# print Dumper(\%loopbacks);
# print Dumper(\%lldpneigh);
$dbh->{AutoCommit} = 0;
$dbh->{RaiseError} = 1;
# Update the switches we have loopback addresses fora
while (my ($sysname, $ip) = each %loopbacks) {
$dbh->do('UPDATE switches SET ip=? WHERE sysname=?',
undef, $ip, $sysname);
}
# Update the switches we have loopback addresses fora
while (my ($sysname, $ipv6) = each %loopbacks) {
$dbh->do('UPDATE switches SET ipv6=? WHERE sysname=?',
undef, $ipv6, $sysname);
}
# Now go through each linknet candidate, and see if we can find any
# direct LLDP neighbors.
my $qexist = $dbh->prepare('SELECT COUNT(*) AS cnt FROM linknets WHERE switch1=? AND switch2=?');
$dbh->do('DELETE FROM linknets');
while (my ($cidr, $devices) = each %map) {
for (my $i = 0; $i < scalar @$devices; ++$i) {
my $device_a = $devices->[$i];
for (my $j = $i + 1; $j < scalar @$devices; ++$j) {
my $device_b = $devices->[$j];
next if $device_a->[0] eq $device_b->[0];
next unless exists($lldpneigh{$device_a->[0]}{$device_b->[0]});
my $switch_a = $switch_id{$device_a->[0]};
my $switch_b = $switch_id{$device_b->[0]};
my $ref = $dbh->selectrow_hashref($qexist, undef, $switch_a, $switch_b);
next if ($ref->{'cnt'} != 0);
$dbh->do('INSERT INTO linknets (switch1, addr1, switch2, addr2) VALUES (?,?,?,?)',
undef,
$switch_a, $device_a->[1],
$switch_b, $device_b->[1]);
}
}
}
$dbh->commit;
|
