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<?php
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// $Id$
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/**
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* @file
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* Used to automagically log out a user after a certain time.
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*/
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/**
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* Implementation of hook_help().
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*/
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function autologout_help($path, $arg) {
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switch ($path) {
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case 'admin/help#autologout':
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$output = '<p>'. t('The <em>Automated Logout</em> module allows you to force users to log out after a given amount of time. You can configure this in the <a href="@usersettings">User settings administration</a>.', array('@usersettings' => base_path() .'admin/user/settings')) . '</p>';
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$output .= '<p>'. t('If you have the <a href="@jquerycountdown">jQuery Countdown module</a> enabled, the <a href="@automatedlogoutblock">Automated Logout block</a> will have a live countdown timer.', array('@automatedlogoutblock' => base_path() .'admin/build/block', '@usersettings' => 'http://drupal.org/project/jquery_countdown')) . '</p>';
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return $output;
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break;
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}
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function autologout_form_alter(&$form, $form_state, $form_id) {
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if ($form_id == 'user_admin_settings') {
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$form['autologout'] = array(
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'#type' => 'fieldset',
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'#title' => t('Automated Logout'),
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'#weight' => -1,
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);
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$form['autologout']['autologout_seconds'] = array(
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'#type' => 'select',
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'#title' => t('Time until forced logout'),
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'#description' => t('Force the user to logout after the given amount of time.'),
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'#default_value' => variable_get('autologout_seconds', 0),
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'#options' => array(
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0 => t('Disabled'),
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30 => t('30 seconds'),
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60 => t('One minute'),
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60 * 2 => t('Two minutes'),
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60 * 5 => t('Five minutes'),
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60 * 10 => t('Ten minutes'),
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60 * 20 => t('Twenty minutes'),
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60 * 30 => t('Thirty minutes'),
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60 * 60 => t('One hour'),
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),
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);
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}
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}
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/**
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* Implementation of hook_init().
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*/
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function autologout_init() {
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global $user;
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if ($user->uid > 0) {
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// See if automatic logout is enabled.
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$seconds = variable_get('autologout_seconds', 0);
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if ($seconds > 0) {
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// Check the session's last access.
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if (!isset($_SESSION['autologout_lastaccess']) || ((int)$_SESSION['autologout_lastaccess']) > time() - $seconds) {
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// Update the session's last access.
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$_SESSION['autologout_lastaccess'] = time();
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$redirect = base_path() .'logout';
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drupal_set_html_head("<meta http-equiv='refresh' content='$seconds';url='$redirect'>");
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}
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else {
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// Force the user to log out.
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module_load_include('inc', 'user', 'user.pages');
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user_logout();
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}
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}
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}
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}
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/**
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* Implementation of hook_block().
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*/
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function autologout_block($op = 'list', $delta = 0, $edit = array()) {
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// The $op parameter determines what piece of information is being requested.
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switch ($op) {
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case 'list':
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$blocks['autologout'] = array(
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'info' => t('Automated Logout'),
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);
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return $blocks;
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break;
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case 'view':
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$block = array();
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switch ($delta) {
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case 'autologout':
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$block['subject'] = t('Automated Logout');
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$block['content'] = theme('autologout_block');
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break;
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}
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return $block;
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}
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}
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/**
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* Implementation of hook_theme().
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*/
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function autologout_theme() {
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return array(
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'autologout_block' => array(),
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);
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}
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/**
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* Themes the automated logout block.
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*/
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function theme_autologout_block() {
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global $user;
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$seconds = (int)variable_get('autologout_seconds', 0);
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if ($user->uid != 0 && $seconds > 0) {
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if (module_exists('jquery_countdown')) {
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jquery_countdown_add(".autologout", array("until" => $seconds, "expiryUrl" => base_path() .'logout'));
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}
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return '<div class="autologout">'. t('You will be logged out in !time.', array('!time' => format_interval($seconds))) . '</div>';
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}
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}
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