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https://github.com/librenms/librenms.git
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246 lines
12 KiB
PHP
246 lines
12 KiB
PHP
<?php
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if ($config['enable_bgp']) {
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// Discover BGP peers
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if (key_exists('vrf_lite_cisco', $device) && (count($device['vrf_lite_cisco'])!=0)) {
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$vrfs_lite_cisco = $device['vrf_lite_cisco'];
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} else {
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$vrfs_lite_cisco = array(array('context_name'=>null));
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}
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$bgpLocalAs = trim(snmp_walk($device, '.1.3.6.1.2.1.15.2', '-Oqvn', 'BGP4-MIB'));
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foreach ($vrfs_lite_cisco as $vrf) {
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$device['context_name'] = $vrf['context_name'];
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if (is_numeric($bgpLocalAs)) {
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echo "AS$bgpLocalAs ";
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if ($bgpLocalAs != $device['bgpLocalAs']) {
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dbUpdate(array('bgpLocalAs' => $bgpLocalAs), 'devices', 'device_id=?', array($device['device_id']));
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echo 'Updated AS ';
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}
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$peer2 = false;
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if ($device['os'] !== 'junos') {
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$peers_data = snmp_walk($device, 'cbgpPeer2RemoteAs', '-Oq', 'CISCO-BGP4-MIB');
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if (empty($peers_data)) {
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$peers_data = snmp_walk($device, 'BGP4-MIB::bgpPeerRemoteAs', '-Oq', 'BGP4-MIB');
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} else {
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$peer2 = true;
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}
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d_echo("Peers : $peers_data \n");
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$peers = trim(str_replace('CISCO-BGP4-MIB::cbgpPeer2RemoteAs.', '', $peers_data));
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$peers = trim(str_replace('BGP4-MIB::bgpPeerRemoteAs.', '', $peers));
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foreach (explode("\n", $peers) as $peer) {
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if ($peer2 === true) {
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list($ver, $peer) = explode('.', $peer, 2);
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}
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list($peer_ip, $peer_as) = explode(' ', $peer);
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if (strstr($peer_ip, ':')) {
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$peer_ip_snmp = preg_replace('/:/', ' ', $peer_ip);
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$peer_ip = preg_replace('/(\S+\s+\S+)\s/', '$1:', $peer_ip_snmp);
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$peer_ip = str_replace('"', '', str_replace(' ', '', $peer_ip));
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}
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if ($peer && $peer_ip != '0.0.0.0') {
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d_echo("Found peer $peer_ip (AS$peer_as)\n");
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$peerlist[] = array(
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'ip' => $peer_ip,
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'as' => $peer_as,
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'ver' => $ver,
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);
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}
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}
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} elseif ($device['os'] == 'junos') {
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// Juniper BGP4-V2 MIB
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// FIXME: needs a big cleanup! also see below.
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// FIXME: is .0.ipv6 the only possible value here?
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$result = snmp_walk($device, 'jnxBgpM2PeerRemoteAs', '-Onq', 'BGP4-V2-MIB-JUNIPER', 'junos');
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$peers = trim(str_replace('.1.3.6.1.4.1.2636.5.1.1.2.1.1.1.13.', '', $result));
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foreach (explode("\n", $peers) as $peer) {
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list($peer_ip_snmp, $peer_as) = explode(' ', $peer);
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// Magic! Basically, takes SNMP form and finds peer IPs from the walk OIDs.
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$octets = count(explode(".", $peer_ip_snmp));
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if ($octets > 11) {
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// ipv6
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$peer_ip = Net_IPv6::compress(snmp2ipv6(implode('.', array_slice(explode('.', $peer_ip_snmp), (count(explode('.', $peer_ip_snmp)) - 16)))));
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} else {
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// ipv4
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$peer_ip = implode('.', array_slice(explode('.', $peer_ip_snmp), (count(explode('.', $peer_ip_snmp)) - 4)));
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}
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if ($peer) {
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d_echo("Found peer $peer_ip (AS$peer_as)\n");
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$peerlist[] = array(
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'ip' => $peer_ip,
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'as' => $peer_as,
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);
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}
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}
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}
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} else {
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echo 'No BGP on host';
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if ($device['bgpLocalAs']) {
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dbUpdate(array('bgpLocalAs' => 'NULL'), 'devices', 'device_id=?', array($device['device_id']));
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echo ' (Removed ASN) ';
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}
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}
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// Process disovered peers
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if (isset($peerlist)) {
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foreach ($peerlist as $peer) {
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$astext = get_astext($peer['as']);
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if (dbFetchCell('SELECT COUNT(*) from `bgpPeers` WHERE device_id = ? AND bgpPeerIdentifier = ?', array($device['device_id'], $peer['ip'])) < '1') {
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$add = dbInsert(array('device_id' => $device['device_id'], 'bgpPeerIdentifier' => $peer['ip'], 'bgpPeerRemoteAs' => $peer['as'], 'context_name' => $device['context_name']), 'bgpPeers');
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if ($config['autodiscovery']['bgp'] === true) {
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$name = gethostbyaddr($peer['ip']);
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$remote_device_id = discover_new_device($name, $device, 'BGP');
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}
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echo '+';
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} else {
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$update = dbUpdate(array('bgpPeerRemoteAs' => $peer['as'], 'astext' => mres($astext)), 'bgpPeers', 'device_id=? AND bgpPeerIdentifier=?', array($device['device_id'], $peer['ip']));
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echo '.';
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}
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if ($device['os_group'] == 'cisco' || $device['os'] == 'junos') {
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if ($device['os_group'] == 'cisco') {
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// Get afi/safi and populate cbgp on cisco ios (xe/xr)
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unset($af_list);
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if ($peer2 === true) {
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$af_data = snmpwalk_cache_oid($device, 'cbgpPeer2AddrFamilyEntry', $cbgp, 'CISCO-BGP4-MIB');
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} else {
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$af_data = snmpwalk_cache_oid($device, 'cbgpPeerAddrFamilyEntry', $cbgp, 'CISCO-BGP4-MIB');
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}
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d_echo('afi data :: ');
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d_echo($af_data);
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foreach ($af_data as $k => $v) {
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if ($peer2 === true) {
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list(,$k) = explode('.', $k, 2);
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}
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d_echo("AFISAFI = $k\n");
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$afisafi_tmp = explode('.', $k);
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$safi = array_pop($afisafi_tmp);
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$afi = array_pop($afisafi_tmp);
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$bgp_ip = str_replace(".$afi.$safi", '', $k);
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$bgp_ip = preg_replace('/:/', ' ', $bgp_ip);
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$bgp_ip = preg_replace('/(\S+\s+\S+)\s/', '$1:', $bgp_ip);
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$bgp_ip = str_replace('"', '', str_replace(' ', '', $bgp_ip));
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if ($afi && $safi && $bgp_ip == $peer['ip']) {
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$af_list[$bgp_ip][$afi][$safi] = 1;
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if (dbFetchCell('SELECT COUNT(*) from `bgpPeers_cbgp` WHERE device_id = ? AND bgpPeerIdentifier = ? AND afi=? AND safi=?', array($device['device_id'], $peer['ip'], $afi, $safi)) == 0) {
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dbInsert(array('device_id' => $device['device_id'], 'bgpPeerIdentifier' => $peer['ip'], 'afi' => $afi, 'safi' => $safi, 'context_name' => $device['context_name']), 'bgpPeers_cbgp');
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}
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}
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}
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}
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if ($device['os'] == 'junos') {
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$safis[1] = 'unicast';
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$safis[2] = 'multicast';
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if (!isset($j_peerIndexes)) {
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$j_bgp = snmpwalk_cache_multi_oid($device, 'jnxBgpM2PeerEntry', $jbgp, 'BGP4-V2-MIB-JUNIPER', 'junos');
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print_r($j_bgp);
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foreach ($j_bgp as $index => $entry) {
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switch ($entry['jnxBgpM2PeerRemoteAddrType']) {
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case 'ipv4':
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$ip = long2ip(hexdec($entry['jnxBgpM2PeerRemoteAddr']));
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d_echo("peerindex for ipv4 $ip is ".$entry['jnxBgpM2PeerIndex']."\n");
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$j_peerIndexes[$ip] = $entry['jnxBgpM2PeerIndex'];
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break;
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case 'ipv6':
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$ip6 = trim(str_replace(' ', '', $entry['jnxBgpM2PeerRemoteAddr']), '"');
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$ip6 = substr($ip6, 0, 4).':'.substr($ip6, 4, 4).':'.substr($ip6, 8, 4).':'.substr($ip6, 12, 4).':'.substr($ip6, 16, 4).':'.substr($ip6, 20, 4).':'.substr($ip6, 24, 4).':'.substr($ip6, 28, 4);
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$ip6 = Net_IPv6::compress($ip6);
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d_echo("peerindex for ipv6 $ip6 is ".$entry['jnxBgpM2PeerIndex']."\n");
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$j_peerIndexes[$ip6] = $entry['jnxBgpM2PeerIndex'];
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break;
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default:
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echo "HALP? Don't know RemoteAddrType ".$entry['jnxBgpM2PeerRemoteAddrType']."!\n";
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break;
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}
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}
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}
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if (!isset($j_afisafi)) {
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$j_prefixes = snmpwalk_cache_multi_oid($device, 'jnxBgpM2PrefixCountersTable', $jbgp, 'BGP4-V2-MIB-JUNIPER', 'junos');
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foreach (array_keys($j_prefixes) as $key) {
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list($index,$afisafi) = explode('.', $key, 2);
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$j_afisafi[$index][] = $afisafi;
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}
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}
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foreach ($j_afisafi[$j_peerIndexes[$peer['ip']]] as $afisafi) {
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list ($afi,$safi) = explode('.', $afisafi);
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$safi = $safis[$safi];
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$af_list[$afi][$safi] = 1;
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if (dbFetchCell('SELECT COUNT(*) from `bgpPeers_cbgp` WHERE device_id = ? AND bgpPeerIdentifier = ? AND afi=? AND safi=?', array($device['device_id'], $peer['ip'], $afi, $safi)) == 0) {
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dbInsert(array('device_id' => $device['device_id'], 'bgpPeerIdentifier' => $peer['ip'], 'afi' => $afi, 'safi' => $safi), 'bgpPeers_cbgp');
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}
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}
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}
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$af_query = "SELECT * FROM bgpPeers_cbgp WHERE `device_id` = '".$device['device_id']."' AND bgpPeerIdentifier = '".$peer['ip']."'";
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foreach (dbFetchRows($af_query) as $entry) {
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$afi = $entry['afi'];
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$safi = $entry['safi'];
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if (!$af_list[$afi][$safi] || !$af_list[$entry['bgpPeerIdentifier']][$afi][$safi]) {
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dbDelete('bgpPeers_cbgp', '`device_id` = ? AND `bgpPeerIdentifier` = ?, afi=?, safi=?', array($device['device_id'], $peer['ip'], $afi, $safi));
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}
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}
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}
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}
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unset($j_afisafi);
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unset($j_prefixes);
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unset($j_bgp);
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unset($j_peerIndexes);
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}
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// Delete removed peers
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$sql = "SELECT * FROM bgpPeers WHERE device_id = '".$device['device_id']."' AND (context_name = '".$device['context_name']."' OR context_name IS NULL)";
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foreach (dbFetchRows($sql) as $entry) {
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unset($exists);
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$i = 0;
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while ($i < count($peerlist) && !isset($exists)) {
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if ($peerlist[$i]['ip'] == $entry['bgpPeerIdentifier']) {
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$exists = 1;
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}
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$i++;
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}
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if (!isset($exists)) {
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dbDelete('bgpPeers', '`bgpPeer_id` = ?', array($entry['bgpPeer_id']));
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dbDelete('bgpPeers_cbgp', '`bgpPeer_id` = ?', array($entry['bgpPeer_id']));
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echo '-';
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}
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}
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unset($peerlist);
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echo "\n";
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unset($device['context_name']);
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}
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unset($device['context_name']);
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unset($vrfs_c);
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}
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echo "FIN BGP \n\n\n";
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