librenms-librenms/includes/discovery/cisco-pw.php

<?php

if($config['enable_pseudowires']) {

  unset( $cpw_count );
  unset($cpw_exists);  

  echo("PW : ");

  $oids = shell_exec($config['snmpwalk'] . " -CI -Ln -Osqn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " cpwVcID");

  $oids = str_replace(".1.3.6.1.4.1.9.10.106.1.2.1.10.", "", $oids);

  $oids = trim($oids);
  foreach ( explode("\n", $oids) as $oid ) {
   if($oid) {
    list($cpwOid, $cpwVcID) = explode(" ", $oid);
    if($cpwOid) {
      list($cpw_remote_id) = split(":", shell_exec($config['snmpget'] . " -Ln -Osqnv -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " cpwVcMplsPeerLdpID." . $cpwOid));
      $interface_descr = trim(shell_exec("snmpwalk -Oqvn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " cpwVcName." . $cpwOid));
      $cpw_remote_device = @mysql_result(mysql_query("SELECT device_id FROM ipaddr AS A, interfaces AS I WHERE A.addr = '".$cpw_remote_id."' AND A.interface_id = I.interface_id"),0);
      $if_id = @mysql_result(mysql_query("SELECT `interface_id` FROM `interfaces` WHERE `ifDescr` = '$interface_descr' AND `device_id` = '".$device['device_id']."'"),0);
      if($cpw_remote_device && $if_id) {
        $hostname = gethostbyid($cpw_remote_device);
#        echo("Oid: " . $cpwOid . " cpwVcID: " . $cpwVcID . " Remote Id: " . $cpw_remote_id . "($hostname(".$cpw_remote_device.") -> $interface_descr($if_id)) \n");
        if(mysql_result(mysql_query("SELECT count(*) FROM pseudowires WHERE `interface_id` = '$if_id'
                                     AND `cpwVcID`='".$cpwVcID."'"),0)) {
  	  echo(".");
        } else {
          $insert_query  = "INSERT INTO `pseudowires` (`interface_id`,`peer_device_id`,`peer_ldp_id`,`cpwVcID`,`cpwOid`) ";
          $insert_query .= "VALUES ('$if_id','$cpw_remote_device','$cpw_remote_id','$cpwVcID', '$cpwOid')"; 
          mysql_query($insert_query);
          echo("+");
 #         echo($device['device_id'] . " $cpwOid $cpw_remote_device $if_id $cpwVcID\n");
        }
	$cpw_exists[] = $device['device_id'] . " $cpwOid $cpw_remote_device $if_id $cpwVcID";
      }
    }
  }
}

$sql = "SELECT * FROM pseudowires AS P, interfaces AS I, devices as D WHERE P.interface_id = I.interface_id AND I.device_id = D.device_id AND D.device_id = '".$device['device_id']."'";
$query = mysql_query($sql);

while ($cpw = mysql_fetch_array($query)) {
  unset($exists);
  $i = 0;
  while ($i < count($cpw_exists) && !$exists) {
    $this_cpw = $cpw['device_id'] . " " . $cpw['cpwOid'] . " " . $cpw['peer_device_id'] . " " . $cpw['interface_id'] . " " . $cpw['cpwVcID'];
    if ($cpw_exists[$i] == $this_cpw) { $exists = 1; 
#    echo($cpw_exists[$i]. " || $this_cpw \n");
    }
    $i++;
    }
  if(!$exists) {
    echo("-");
#    echo($this_cpw . "\n");
    mysql_query("DELETE FROM pseudowires WHERE pseudowire_id = '" . $cpw['pseudowire_id'] . "'");
  }
}

}

?>