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sources/3rdparty/Sabre/DAV/Auth/Backend/AbstractBasic.php 2.46 KB
03e52840d   Kload   Init
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  <?php
  /**
   * HTTP Basic authentication backend class
   *
   * This class can be used by authentication objects wishing to use HTTP Basic
   * Most of the digest logic is handled, implementors just need to worry about
   * the validateUserPass method.
   *
   * @package Sabre
   * @subpackage DAV
   * @copyright Copyright (C) 2007-2013 Rooftop Solutions. All rights reserved.
   * @author James David Low (http://jameslow.com/)
   * @author Evert Pot (http://www.rooftopsolutions.nl/)
   * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
   */
  abstract class Sabre_DAV_Auth_Backend_AbstractBasic implements Sabre_DAV_Auth_IBackend {
  
      /**
       * This variable holds the currently logged in username.
       *
       * @var string|null
       */
      protected $currentUser;
  
      /**
       * Validates a username and password
       *
       * This method should return true or false depending on if login
       * succeeded.
       *
       * @param string $username
       * @param string $password
       * @return bool
       */
      abstract protected function validateUserPass($username, $password);
  
      /**
       * Returns information about the currently logged in username.
       *
       * If nobody is currently logged in, this method should return null.
       *
       * @return string|null
       */
      public function getCurrentUser() {
          return $this->currentUser;
      }
  
  
      /**
       * Authenticates the user based on the current request.
       *
       * If authentication is successful, true must be returned.
       * If authentication fails, an exception must be thrown.
       *
       * @param Sabre_DAV_Server $server
       * @param string $realm
       * @throws Sabre_DAV_Exception_NotAuthenticated
       * @return bool
       */
      public function authenticate(Sabre_DAV_Server $server, $realm) {
  
          $auth = new Sabre_HTTP_BasicAuth();
          $auth->setHTTPRequest($server->httpRequest);
          $auth->setHTTPResponse($server->httpResponse);
          $auth->setRealm($realm);
          $userpass = $auth->getUserPass();
          if (!$userpass) {
              $auth->requireLogin();
              throw new Sabre_DAV_Exception_NotAuthenticated('No basic authentication headers were found');
          }
  
          // Authenticates the user
          if (!$this->validateUserPass($userpass[0],$userpass[1])) {
              $auth->requireLogin();
              throw new Sabre_DAV_Exception_NotAuthenticated('Username or password does not match');
          }
          $this->currentUser = $userpass[0];
          return true;
      }
  
  
  }