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   1  <?php
   2  /**
   3   * The Auth_mcal class provides an MCAL implementation of the Horde
   4   * authentication system.
   5   *
   6   * MCAL Home Page: http://mcal.chek.com/
   7   *
   8   * Required parameters:<pre>
   9   *   'calendar'  The MCAL calendar name.</pre>
  10   *
  11   *
  12   * $Horde: framework/Auth/Auth/mcal.php,v 1.27.10.9 2006/01/01 21:28:07 jan Exp $
  13   *
  14   * Copyright 1999-2006 Chuck Hagenbuch <chuck@horde.org>
  15   *
  16   * See the enclosed file COPYING for license information (LGPL). If you
  17   * did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
  18   *
  19   * @author  Chuck Hagenbuch <chuck@horde.org>
  20   * @since   Horde 1.3
  21   * @package Horde_Auth
  22   */
  23  class Auth_mcal extends Auth {
  24  
  25      /**
  26       * An array of capabilities, so that the driver can report which
  27       * operations it supports and which it doesn't.
  28       *
  29       * @var array
  30       */
  31      var $capabilities = array('add'           => false,
  32                                'update'        => false,
  33                                'resetpassword' => false,
  34                                'remove'        => false,
  35                                'list'          => true,
  36                                'transparent'   => false);
  37  
  38      /**
  39       * Constructs a new MCAL authentication object.
  40       *
  41       * @param array $params  A hash containing connection parameters.
  42       */
  43      function Auth_mcal($params = array())
  44      {
  45          if (!Util::extensionExists('mcal')) {
  46              Horde::fatal(_("Auth_mcal: Required MCAL extension not found."), __FILE__, __LINE__);
  47          }
  48  
  49          if (empty($params['calendar'])) {
  50              Horde::fatal(_("No calendar name provided for MCAL authentication."), __FILE__, __LINE__);
  51          }
  52  
  53          $this->_params = $params;
  54      }
  55  
  56      /**
  57       * Find out if a set of login credentials are valid.
  58       *
  59       * @access private
  60       *
  61       * @param string $userId      The userId to check.
  62       * @param array $credentials  An array of login credentials. For MCAL,
  63       *                            this must contain a password entry.
  64       *
  65       * @return boolean  Whether or not the credentials are valid.
  66       */
  67      function _authenticate($userId, $credentials)
  68      {
  69          $mcal = @mcal_open($this->_params['calendar'], $userId, $credentials['password']);
  70  
  71          if ($mcal) {
  72              @mcal_close($mcal);
  73              return true;
  74          } else {
  75              @mcal_close($mcal);
  76              $this->_setAuthError(AUTH_REASON_BADLOGIN);
  77              return false;
  78          }
  79      }
  80  
  81      /**
  82       * List all users in the system.
  83       *
  84       * @return mixed  The array of userIds, or a PEAR_Error object on failure.
  85       */
  86      function listUsers()
  87      {
  88          $lines = @file('/etc/mpasswd');
  89          if (!$lines || !is_array($lines)) {
  90              return PEAR::raiseError('Unable to list users.');
  91          }
  92  
  93          $users = array();
  94          foreach ($lines as $line) {
  95              $users[] = substr($line, 0, strpos($line, ':'));
  96          }
  97  
  98          return $users;
  99      }
 100  
 101  }