librenms-librenms/includes/discovery/discovery-protocols.inc.php

<?php

echo "Discovery protocols:";

$community = $device['community'];

if($device['os'] == "ironware") {
  echo(" Brocade FDP: ");
  $fdp_array = snmpwalk_cache_twopart_oid($device, "snFdpCacheEntry", array(), "FOUNDRY-SN-SWITCH-GROUP-MIB");
  $fdp_array = $fdp_array[$device['device_id']];
  if($fdp_array) {
    unset($fdp_links);
    foreach( array_keys($fdp_array) as $key) {
      $interface = mysql_fetch_array(mysql_query("SELECT * FROM `ports` WHERE device_id = '".$device['device_id']."' AND `ifIndex` = '".$key."'"));
      $fdp_if_array = $fdp_array[$key];
      foreach( array_keys($fdp_if_array) as $entry_key) 
      {
	$fdp = $fdp_if_array[$entry_key];
	$remote_device_id = @mysql_result(mysql_query("SELECT `device_id` FROM `devices` WHERE `sysName` = '".$fdp['snFdpCacheDeviceId']."' OR `hostname`='".$fdp['snFdpCacheDeviceId']."'"), 0);
	if($remote_device_id) {
	  $if = $fdp['snFdpCacheDevicePort'];
	  $remote_interface_id = @mysql_result(mysql_query("SELECT interface_id FROM `ports` WHERE (`ifDescr` = '$if' OR `ifName`='$if') AND `device_id` = '".$remote_device_id."'"),0);
	} else { $remote_interface_id = "0"; }

	discover_link($interface['interface_id'], $fdp['snFdpCacheVendorId'], $remote_interface_id, $fdp['snFdpCacheDeviceId'], $fdp['snFdpCacheDevicePort'], $fdp['snFdpCachePlatform'], $fdp['snFdpCacheVersion']);

      }
    }
  }
}

if($device['os_group'] == "ios") {
  echo(" CISCO-CDP-MIB: ");  
  unset($cdp_array);
  $cdp_array = snmpwalk_cache_twopart_oid($device, "cdpCache", array(), "CISCO-CDP-MIB");
  $cdp_array = $cdp_array[$device['device_id']];
  if($cdp_array) {
    unset($cdp_links);
    foreach( array_keys($cdp_array) as $key) { 
      $interface = mysql_fetch_array(mysql_query("SELECT * FROM `ports` WHERE device_id = '".$device['device_id']."' AND `ifIndex` = '".$key."'"));
      $cdp_if_array = $cdp_array[$key]; 
      foreach( array_keys($cdp_if_array) as $entry_key) {
	$cdp = $cdp_if_array[$entry_key];
	$remote_device_id = @mysql_result(mysql_query("SELECT `device_id` FROM `devices` WHERE `sysName` = '".$cdp['cdpCacheDeviceId']."' OR `hostname`='".$cdp['cdpCacheDeviceId']."'"), 0);
	if($remote_device_id) {
	  $if = $cdp['cdpCacheDevicePort'];
	  $remote_interface_id = @mysql_result(mysql_query("SELECT interface_id FROM `ports` WHERE (`ifDescr` = '$if' OR `ifName`='$if') AND `device_id` = '".$remote_device_id."'"),0);
	} else { $remote_interface_id = "0"; }
	if($interface['interface_id'] && $cdp['cdpCacheDeviceId'] && $cdp['cdpCacheDevicePort']) {
	  discover_link($interface['interface_id'], 'cdp', $remote_interface_id, $cdp['cdpCacheDeviceId'], $cdp['cdpCacheDevicePort'], $cdp['cdpCachePlatform'], $cdp['cdpCacheVersion']);
	}
      }     
    }
  }
}


echo(" LLDP-MIB: ");

unset($lldp_array);
$lldp_array = snmpwalk_cache_threepart_oid($device, "lldpRemoteSystemsData", array(), "LLDP-MIB");
$lldp_array = $lldp_array[$device['device_id']];
if($lldp_array) {
  $lldp_links = "";
  foreach( array_keys($lldp_array) as $key) { 
    $lldp_if_array = $lldp_array[$key]; 
    foreach( array_keys($lldp_if_array) as $entry_key) {
      $interface = mysql_fetch_array(mysql_query("SELECT * FROM `ports` WHERE device_id = '".$device['device_id']."' AND `ifIndex` = '".$entry_key."'"));
      $lldp_instance = $lldp_if_array[$entry_key];
      foreach ( array_keys($lldp_instance) as $entry_instance) {
	$lldp = $lldp_instance[$entry_instance];
	$remote_device_id = @mysql_result(mysql_query("SELECT `device_id` FROM `devices` WHERE `sysName` = '".$lldp['lldpRemSysName']."' OR `hostname`='".$lldp['lldpRemSysName']."'"), 0);
	if($remote_device_id) {
	  $if = $lldp['lldpRemPortDesc'];
	  $remote_interface_id = @mysql_result(mysql_query("SELECT interface_id FROM `ports` WHERE (`ifDescr` = '$if' OR `ifName`='$if') AND `device_id` = '".$remote_device_id."'"),0);
	} else { $remote_interface_id = "0"; }

	if($interface['interface_id'] && $lldp['lldpRemSysDesc'] && $lldp['lldpRemPortDesc']) {
	  discover_link($interface['interface_id'], 'lldp', $remote_interface_id, $lldp['lldpRemSysName'], $lldp['lldpRemPortDesc'], NULL, $lldp['lldpRemSysDesc']);
	}
      }
    }     
  }
}


if($debug) { print_r($link_exists); }

$sql = "SELECT * FROM `links` AS L, `ports` AS I WHERE L.local_interface_id = I.interface_id AND I.device_id = '".$device['device_id']."'";
if ($query = mysql_query($sql))
{
  while ($test = mysql_fetch_array($query))
  {
    $local_interface_id = $test['local_interface_id'];
    $remote_hostname = $test['remote_hostname'];
    $remote_port = $test['remote_port'];
    if($debug) { echo("$local_interface_id -> $remote_hostname -> $remote_port \n"); }
    if(!$link_exists[$local_interface_id][$remote_hostname][$remote_port]) {
      echo("-");
      mysql_query("DELETE FROM `links` WHERE id = '" . $test['id'] . "'");
      if($debug) {echo(mysql_affected_rows()." deleted ");}
    }
  }
}

unset($link_exists); 
echo("\n");

?>