<?php
  /**
   * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */

  /**
   * User authentication against an IMAP mail server
   *
   * @category Apps
   * @package  UserExternal
   * @author   Robin Appelman <icewind@owncloud.com>
   * @license  http://www.gnu.org/licenses/agpl AGPL
   * @link     http://github.com/owncloud/apps
   */
  class OC_User_IMAP extends \OCA\user_external\Base {

  	private $mailbox;

  	/**
  	 * Create new IMAP authentication provider
  	 *
  	 * @param string $mailbox PHP imap_open mailbox definition, e.g.
  	 *                        {127.0.0.1:143/imap/readonly}
  	 */

  	public function __construct($mailbox) {

  		parent::__construct($mailbox);

  		$this->mailbox=$mailbox;
  	}
  
  	/**

  	 * Check if the password is correct without logging in the user

  	 *
  	 * @param string $uid      The username
  	 * @param string $password The password
  	 *
  	 * @return true/false

  	 */
  	public function checkPassword($uid, $password) {

  		if (!function_exists('imap_open')) {
  			OCP\Util::writeLog('user_external', 'ERROR: PHP imap extension is not installed', OCP\Util::ERROR);
  			return false;
  		}
  		$mbox = @imap_open($this->mailbox, $uid, $password, OP_HALFOPEN);

  		imap_errors();
  		imap_alerts();

  		if($mbox !== FALSE) {

  			imap_close($mbox);

  			$this->storeUser($uid);

  			return $uid;
  		}else{
  			return false;
  		}
  	}

  }