librenms/includes/discovery/cisco-vrf.php

<?php

  unset( $vrf_count );

  echo("VRF : ");

  $oid_cmd = $config['snmpwalk'] . " -m MPLS-VPN-MIB -CI -Ln -Osqn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfRouteDistinguisher";
  $oids = shell_exec($oid_cmd);

  $oids = str_replace(".1.3.6.1.3.118.1.2.2.1.3.", "", $oids);
  $oids = str_replace(" \"", "||", $oids);
  $oids = str_replace("\"", "", $oids);

  $oids = trim($oids);
  foreach ( explode("\n", $oids) as $oid ) {
   if($oid) {
    list($vrf['oid'], $vrf['mplsVpnVrfRouteDistinguisher']) = explode("||", $oid);
    $vrf['name'] = trim(shell_exec($config['snmpget'] . " -m MPLS-VPN-MIB -Ln -Osq -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfRouteDistinguisher.".$vrf['oid']));
    list(,$vrf['name'],, $vrf['mplsVpnVrfRouteDistinguisher']) = explode("\"", $vrf['name']);
    $vrf['mplsVpnVrfDescription'] = trim(shell_exec($config['snmpget'] . " -m MPLS-VPN-MIB -Ln -Osqvn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfDescription.".$vrf['oid']));

    if(@mysql_result(mysql_query("SELECT count(*) FROM vrfs WHERE `device_id` = '".$device['device_id']."'
                                 AND `vrf_oid`='".$vrf['oid']."'"),0)) {
      $update_query  = "UPDATE `vrfs` SET `mplsVpnVrfDescription` = '".$vrf['mplsVpnVrfDescription']."', `mplsVpnVrfRouteDistinguisher` = '".$vrf['mplsVpnVrfRouteDistinguisher']."' ";
      $update_query .= "WHERE device_id = '".$device['device_id']."' AND vrf_oid = '".$vrf['oid']."'"; 
      mysql_query($update_query);
    } else {
      $insert_query  = "INSERT INTO `vrfs` (`vrf_oid`,`vrf_name`,`mplsVpnVrfRouteDistinguisher`,`mplsVpnVrfDescription`,`device_id`) ";
      $insert_query .= "VALUES ('".$vrf['oid']."','".$vrf['name']."','".$vrf['mplsVpnVrfRouteDistinguisher']."','".$vrf['mplsVpnVrfDescription']."','".$device['device_id']."')";
      mysql_query($insert_query);
    }
    $vrf_id = @mysql_result(mysql_query("SELECT vrf_id FROM vrfs WHERE `device_id` = '".$device['device_id']."' AND `vrf_oid`='".$vrf['oid']."'"),0);
    $valid_vrf[$vrf_id] = 1;
    echo("\nRD:".$vrf['mplsVpnVrfRouteDistinguisher']." ".$vrf['name']." ".$vrf['mplsVpnVrfDescription']." ");
    $interfaces_oid = ".1.3.6.1.3.118.1.2.1.1.2." . $vrf['oid'];
    $interfaces = shell_exec($config['snmpwalk'] . " -m MPLS-VPN-MIB -CI -Ln -Osqn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " $interfaces_oid");
    $interfaces = trim(str_replace($interfaces_oid . ".", "", $interfaces));
#    list($interfaces) = explode(" ", $interfaces);
    echo(" ( ");
    foreach (explode("\n", $interfaces) as $if_id) {
      $interface = mysql_fetch_array(mysql_query("SELECT * FROM interfaces WHERE ifIndex = '$if_id' AND device_id = '" . $device['device_id'] . "'"));
      echo(makeshortif($interface['ifDescr']) . " ");
      mysql_query("UPDATE interfaces SET ifVrf = '".$vrf_id."' WHERE interface_id = '".$interface['interface_id']."'");
      $if = $interface['interface_id'];
      $valid_vrf_if[$vrf_id][$if] = 1;
    }
    echo(") ");
   }
  }

  echo("\n");

  $sql   = "SELECT * FROM interfaces WHERE device_id = '" . $device['device_id'] . "'";
    $data = mysql_query($sql);
    while($row = mysql_fetch_array($data)) {
      $if = $row['interface_id'];
      $vrf_id = $row['ifVrf'];
      if($row['ifVrf']){ if(!$valid_vrf_if[$vrf_id][$if]) {
        echo("-");
        $query = @mysql_query("UPDATE interfaces SET `ifVrf` = NULL WHERE interface_id = '$if'");
      } else {echo(".");} }
    }

    $sql  = "SELECT * FROM vrfs WHERE device_id = '" . $device['device_id'] . "'";
    $data = mysql_query($sql);
    while($row = mysql_fetch_array($data)) {
      $vrf_id = $row['vrf_id'];
      if(!$valid_vrf[$vrf_id]) {
        echo("-");
        $query = @mysql_query("DELETE FROM vrfs WHERE vrf_id = '$vrf_id'");
      } else {echo(".");}
    }

  unset($valid_vrf_if);
  unset($valid_vrf);

  echo("\n");

?>