<?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.
   */
  
  class OC_User_SMB extends OC_User_Backend{
  	private $host;
  
  	const smbclient='smbclient';
  	const loginError='NT_STATUS_LOGON_FAILURE';
  
  	public function __construct($host) {
  		$this->host=$host;
  	}
  
  	/**
  	 * @brief Check if the password is correct
  	 * @param $uid The username
  	 * @param $password The password
  	 * @returns true/false
  	 *
  	 * Check if the password is correct without logging in the user
  	 */
  	public function checkPassword($uid, $password) {
  		$uidEscaped=escapeshellarg($uid);
  		$password=escapeshellarg($password);
  		$result=array();
  		$command=self::smbclient.' //'.$this->host.'/dummy -U'.$uidEscaped.'%'.$password;
  		$result=exec($command,$result);
  		if(substr($result,-strlen(self::loginError))==self::loginError) {
  			return false;
  		}else{
  			return $uid;
  		}
  	}
  
  	public function userExists($uid) {
  		return true;
  	}
  }