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  if (empty($cas_user['login']) || empty($cas_user['name'])) {

    // Only set a warning if we forced login.

    if ($force_authentication) {

    }

    return;

  }

    $edit['cas_user'] = $cas_user;

    $edit['roles'] = $account->roles + cas_roles();

    if (module_exists('persistent_login') && !empty($_SESSION['cas_remember'])) {

    }

    // Allow other modules to make their own custom changes.

    cas_user_module_invoke('presave', $edit, $account);

    $user = drupal_anonymous_user();

    // Only display error messages only if the user intended to log in.

    if ($force_authentication) {

    }

  }

}

  $server_port       = (int)variable_get('cas_port', '443');

  $server_uri        = (string)variable_get('cas_uri', '');

  $cas_cert          = (string)variable_get('cas_cert', '');

  }

  $start_session = (boolean)FALSE;

    phpCAS::proxy($server_version, $server_cas_server, $server_port, $server_uri, $start_session);

    }

  }

  else {

    phpCAS::client($server_version, $server_cas_server, $server_port, $server_uri, $start_session);

  }

  // force CAS authentication

  if ($cas_cert = variable_get('cas_cert', '')) {

    phpCAS::setCasServerCACert($cas_cert);

 * Implements hook_menu_link_alter().

 *

 * Flag this link as needing alter at display time.

function cas_menu_link_alter(&$item) {

  if ($item['link_path'] == 'cas' || $item['link_path'] == 'caslogout') {

    $item['options']['alter'] = TRUE;

 * Implements hook_translated_menu_item_alter().

 *

 * Append dynamic query 'destination' to several menu items.

function cas_translated_menu_link_alter(&$item) {

  if ($item['href'] == 'cas') {

    $item['localized_options']['query'] = drupal_get_destination();

 *   An array of user ids. For each account, a CAS username is created with

 *   the same name as the Drupal username.

 *

 */

function cas_user_operations_create_username($uids) {

  $accounts = user_load_multiple($uids);

 * @param $uids

 *   An array of user ids. For each account, all CAS usernames are removed.

 *

 */

function cas_user_operations_remove_usernames($uids) {

  db_delete('cas_user')

 * @param $alter

 *   If TRUE, run the CAS username through hook_cas_user_alter() before

 *   loading the account.

 *

 * @return

 *   A fully-loaded $user object upon successful user load or FALSE if user

 *   cannot be loaded.

 */

  if ($alter) {

    $cas_user = array(

      'name' => $cas_name,

    $cas_name = $cas_user['name'];

  }

  if ($uid) {

  }

  return FALSE;

}

function cas_login_page($cas_first_login = FALSE) {

  global $user;

  $destination = '';

  // If it is the user's first CAS login and initial login redirection is enabled, go to the set page

  if ($cas_first_login && variable_get('cas_first_login_destination', '')) {

    $destination = variable_get('cas_first_login_destination', '');

    unset($_GET['destination']);

  }

  // Respect the query string, if transmitted.

}

/**

  // Build the logout URL.

  cas_phpcas_init();

  if (isset($_GET['destination']) && !url_is_external($_GET['destination'])) {

    // Add destination override so that a destination can be specified on the

  //Make it an absolute url.  This will also convert <front> to the front page.

  if ($destination) {

    $destination_url = url($destination, array('absolute' => TRUE));

      'service' => $destination_url,

      'url' => $destination_url,

    );

  }

  // Mimic user_logout().

  if ($invoke_hook) {

    watchdog('user', 'Session closed for %name.', array('%name' => $user->name));

    module_invoke_all('user_logout', $user);

  }

}

/**

 * Determine if we should automatically check if the user is authenticated.

 *

 * This implements part of the CAS gateway feature.

 *

 * @return

 *   TRUE if we should query the CAS server to see if the user is already

  }

  // Check to see if we've got a search bot.

    }

  }

 */

function cas_form_alter(&$form, &$form_state, $form_id) {

  switch ($form_id) {

    case 'user_login':

    case 'user_login_block':

        }

        if (variable_get('cas_hide_password', 0)) {

          $form['account']['pass']['#access'] = FALSE;

        }

      }

      break;

    case 'user_pass':

function _cas_single_sign_out_check() {

  if (isset($_POST["logoutRequest"])) {

    $cas_logout_request_xml = new SimpleXMLElement($cas_logout_request_xml_string);

    if (is_object($cas_logout_request_xml)) {

      $namespaces = $cas_logout_request_xml->getNameSpaces();

        // Log them out now.

        // first lets find out who we want to log off

        }

      }

    }

 * Get the CAS attributes of the current CAS user.

 *

 * Ensures that phpCAS is properly initialized before getting the attributes.

 *

 * @param $cas_name

 *   If provided, ensure that the currently logged in CAS user matches this