/**
  * @param $mac
  * @param $name
  * @param $computers_id
  * @param $instantiation_type
  * @param $inst_input
  * @param $ips
  * @param $check_name
  * @param $dohistory
  * @param $already_known_ports
  * @return ID
  */
 private static function updateNetworkPort($mac, $name, $computers_id, $instantiation_type, $inst_input, $ips, $check_name, $dohistory, $already_known_ports)
 {
     global $DB;
     $network_port = new NetworkPort();
     // Then, find or create the base NetworkPort
     $query = "SELECT `id`, `is_dynamic`\n                FROM `glpi_networkports`\n                WHERE `itemtype` = 'Computer'\n                   AND `items_id` = '{$computers_id}'\n                   AND `mac` = '{$mac}'";
     // If there is virtual ports, then, filter by port's name
     if ($check_name) {
         $query .= " AND `name` = '{$name}'";
     }
     if (count($already_known_ports) > 0) {
         $query .= " AND `id` NOT IN (" . implode(',', $already_known_ports) . ")";
     }
     // We order by is_dynamic to be sure to get the static ones first !
     $query .= " ORDER BY `is_dynamic`, `id`";
     $ports = $DB->request($query);
     if ($ports->numrows() == 0) {
         $port_input = array('name' => $name, 'mac' => $mac, 'items_id' => $computers_id, 'itemtype' => 'Computer', '_no_history' => !$dohistory, 'instantiation_type' => $instantiation_type, '_create_children' => 1, 'is_dynamic' => 1, 'is_deleted' => 0);
         $networkports_id = $network_port->add($port_input, array(), $dohistory);
         if ($networkports_id === false) {
             return -1;
         }
         $inst_input['networkports_id'] = $networkports_id;
         $instantiation = $network_port->getInstantiation();
         $instantiation->update($inst_input);
         unset($instantiation);
     } else {
         $line = $ports->next();
         $networkports_id = $line['id'];
         $network_port->getFromDB($networkports_id);
         if (!$check_name && $network_port->fields['name'] != $name) {
             $port_input = array('id' => $network_port->getID(), 'name' => $name, 'is_dynamic' => 1);
             $network_port->update($port_input);
         }
         if ($network_port->fields['instantiation_type'] != $instantiation_type && $network_port->fields['is_dynamic'] == 1) {
             $network_port->switchInstantiationType($instantiation_type);
             $inst_input['networkports_id'] = $network_port->getID();
             $instantiation = $network_port->getInstantiation();
             $instantiation->add($inst_input);
             unset($instantiation);
         }
         if ($network_port->fields['instantiation_type'] == $instantiation_type) {
             $instantiation = $network_port->getInstantiation();
             $inst_input['id'] = $instantiation->getID();
             $inst_input['networkports_id'] = $network_port->getID();
             $instantiation->update($inst_input);
             unset($instantiation);
         }
     }
     if ($network_port->isNewItem()) {
         return -1;
     }
     $network_name = new NetworkName();
     $query = "SELECT `id`, `is_dynamic`\n                FROM `glpi_networknames`\n                WHERE `itemtype` = 'NetworkPort'\n                   AND `items_id` = '{$networkports_id}'\n                ORDER BY `is_dynamic`";
     if (!$ips || count($ips) == 0) {
         foreach ($DB->request($query) as $line) {
             if ($line['is_dynamic']) {
                 $network_name->delete($line, true, $dohistory);
             }
         }
     } else {
         $names = $DB->request($query);
         if ($names->numrows() == 0) {
             $name_input = array('itemtype' => 'NetworkPort', 'items_id' => $networkports_id, 'is_dynamic' => 1, 'is_deleted' => 0, '_no_history' => !$dohistory, 'name' => 'OCS-INVENTORY-NG');
             $networknames_id = $network_name->add($name_input);
         } else {
             $line = $names->next();
             $networknames_id = $line['id'];
             foreach ($names as $line) {
                 if ($line['is_dynamic'] == 1 && $line['id'] != $networknames_id) {
                     $network_port->delete($line, true, $dohistory);
                 }
             }
         }
         $ip_address = new IPAddress();
         $already_known_addresses = array();
         $query = "SELECT `id`, `name`, `is_dynamic`, `mainitems_id`\n                   FROM `glpi_ipaddresses`\n                   WHERE `itemtype` = 'NetworkName'\n                     AND `items_id` = '{$networknames_id}'\n                   ORDER BY `is_dynamic`";
         foreach ($DB->request($query) as $line) {
             if (in_array($line['name'], $ips) && !empty($line['mainitems_id'])) {
                 $already_known_addresses[] = $line['id'];
                 $ips = array_diff($ips, array($line['name']));
             } elseif ($line['is_dynamic'] == 1) {
                 $ip_address->delete($line, true, $dohistory);
             }
         }
     }
     if ($ips) {
         foreach ($ips as $ip) {
             $ip_input = array('name' => $ip, 'itemtype' => 'NetworkName', 'items_id' => $networknames_id, '_no_history' => !$dohistory, 'is_dynamic' => 1, 'is_deleted' => 0);
             $ip_address->add($ip_input);
         }
     }
     return $network_port->getID();
 }