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<?php |
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/** |
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* Copyright (c) 2012 Robin Appelman <[email protected]> |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. |
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* See the COPYING-README file. |
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*/ |
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/** |
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* User authentication via samba (smbclient) |
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* |
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* @category Apps |
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* @package UserExternal |
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* @author Robin Appelman <[email protected]> |
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* @license http://www.gnu.org/licenses/agpl AGPL |
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* @link http://github.com/owncloud/apps |
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*/ |
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class OC_User_SMB extends \OCA\user_external\Base{ |
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private $host; |
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const SMBCLIENT = 'smbclient -L'; |
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const LOGINERROR = 'NT_STATUS_LOGON_FAILURE'; |
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/** |
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* Create new samba authentication provider |
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* |
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* @param string $host Hostname or IP of windows machine |
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*/ |
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public function __construct($host) { |
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parent::__construct($host); |
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$this->host=$host; |
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} |
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/** |
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* @param string $uid |
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* @param string $password |
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* @return bool |
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*/ |
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private function tryAuthentication($uid, $password) { |
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$uidEscaped = escapeshellarg($uid); |
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$password = escapeshellarg($password); |
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$command = self::SMBCLIENT.' '.escapeshellarg('//' . $this->host . '/dummy').' -U'.$uidEscaped.'%'.$password; |
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$lastline = exec($command, $output, $retval); |
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if ($retval === 127) { |
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OCP\Util::writeLog( |
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'user_external', 'ERROR: smbclient executable missing', |
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OCP\Util::ERROR |
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); |
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return false; |
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} else if (strpos($lastline, self::LOGINERROR) !== false) { |
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//normal login error |
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return false; |
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} else if (strpos($lastline, 'NT_STATUS_BAD_NETWORK_NAME') !== false) { |
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//login on minor error |
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goto login; |
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} else if ($retval != 0) { |
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//some other error |
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OCP\Util::writeLog( |
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'user_external', 'ERROR: smbclient error: ' . trim($lastline), |
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OCP\Util::ERROR |
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); |
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return false; |
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} else { |
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login: |
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return $uid; |
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} |
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} |
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/** |
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* Check if the password is correct without logging in the user |
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* |
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* @param string $uid The username |
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* @param string $password The password |
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* |
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* @return true/false |
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*/ |
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public function checkPassword($uid, $password) { |
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// Check with an invalid password, if the user authenticates then fail |
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$attemptWithInvalidPassword = $this->tryAuthentication($uid, base64_encode($password)); |
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if(is_string($attemptWithInvalidPassword)) { |
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return false; |
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} |
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// Check with valid password |
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$attemptWithValidPassword = $this->tryAuthentication($uid, $password); |
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if(is_string($attemptWithValidPassword)) { |
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$this->storeUser($uid); |
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return $uid; |
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} |
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return false; |
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} |
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} |
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owncloud /
apps
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