75 lines
2.0 KiB
Perl
75 lines
2.0 KiB
Perl
package App::Netdisco::Worker::Plugin::Arpnip::Subnets;
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use Dancer ':syntax';
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use App::Netdisco::Worker::Plugin;
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use aliased 'App::Netdisco::Worker::Status';
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use App::Netdisco::Transport::SNMP ();
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use App::Netdisco::Util::Permission 'check_acl_no';
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use Dancer::Plugin::DBIC 'schema';
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use NetAddr::IP::Lite ':lower';
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use Time::HiRes 'gettimeofday';
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register_worker({ phase => 'main', driver => 'snmp' }, sub {
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my ($job, $workerconf) = @_;
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my $device = $job->device;
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my $snmp = App::Netdisco::Transport::SNMP->reader_for($device)
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or return Status->defer("arpnip failed: could not SNMP connect to $device");
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# get directly connected networks
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my @subnets = gather_subnets($device);
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# TODO: IPv6 subnets
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my $now = 'to_timestamp('. (join '.', gettimeofday) .')';
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store_subnet($_, $now) for @subnets;
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return Status->info(sprintf ' [%s] arpnip - processed %s Subnet entries',
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$device->ip, scalar @subnets);
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});
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# gathers device subnets
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sub gather_subnets {
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my $device = shift;
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my @subnets = ();
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my $snmp = App::Netdisco::Transport::SNMP->reader_for($device)
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or return (); # already checked!
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my $ip_netmask = $snmp->ip_netmask;
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foreach my $entry (keys %$ip_netmask) {
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my $ip = NetAddr::IP::Lite->new($entry);
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my $addr = $ip->addr;
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next if $addr eq '0.0.0.0';
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next if check_acl_no($ip, 'group:__LOCAL_ADDRESSES__');
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next if setting('ignore_private_nets') and $ip->is_rfc1918;
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my $netmask = $ip_netmask->{$addr};
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next if $netmask eq '255.255.255.255' or $netmask eq '0.0.0.0';
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my $cidr = NetAddr::IP::Lite->new($addr, $netmask)->network->cidr;
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debug sprintf ' [%s] arpnip - found subnet %s', $device->ip, $cidr;
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push @subnets, $cidr;
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}
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return @subnets;
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}
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# update subnets with new networks
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sub store_subnet {
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my ($subnet, $now) = @_;
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schema('netdisco')->txn_do(sub {
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schema('netdisco')->resultset('Subnet')->update_or_create(
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{
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net => $subnet,
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last_discover => \$now,
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},
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{ for => 'update' });
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});
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}
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true;
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