<?php

/**

 * Implements hook_menu().

 */

function session_test_menu() {

  $items['session-test/get'] = array(

    'title' => 'Session value',

    'page callback' => '_session_test_get',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/id'] = array(

    'title' => 'Session ID',

    'page callback' => '_session_test_id',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/id-from-cookie'] = array(

    'title' => 'Session ID from cookie',

    'page callback' => '_session_test_id_from_cookie',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/set/%'] = array(

    'title' => 'Set session value',

    'page callback' => '_session_test_set',

    'page arguments' => array(2),

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/no-set/%'] = array(

    'title' => 'Set session value but do not save session',

    'page callback' => '_session_test_no_set',

    'page arguments' => array(2),

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/set-message'] = array(

    'title' => 'Set message',

    'page callback' => '_session_test_set_message',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/set-message-but-dont-save'] = array(

    'title' => 'Set message but do not save session',

    'page callback' => '_session_test_set_message_but_dont_save',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/set-not-started'] = array(

    'title' => 'Set message when session is not started',

    'page callback' => '_session_test_set_not_started',

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

  );

  $items['session-test/is-logged-in'] = array(

    'title' => 'Check if user is logged in',

    'page callback' => '_session_test_is_logged_in',

    'access callback' => 'user_is_logged_in',

    'type' => MENU_CALLBACK,

  );

  return $items;

}

/**

 * Implements hook_boot().

 */

function session_test_boot() {

  header('X-Session-Empty: ' . intval(empty($_SESSION)));

}

/**

 * Page callback, prints the stored session value to the screen.

 */

function _session_test_get() {

  if (!empty($_SESSION['session_test_value'])) {

    return t('The current value of the stored session variable is: %val', array('%val' => $_SESSION['session_test_value']));

  }

  else {

    return "";

  }

}

/**

 * Page callback, stores a value in $_SESSION['session_test_value'].

 */

function _session_test_set($value) {

  $_SESSION['session_test_value'] = $value;

  return t('The current value of the stored session variable has been set to %val', array('%val' => $value));

}

/**

 * Menu callback: turns off session saving and then tries to save a value

 * anyway.

 */

function _session_test_no_set($value) {

  drupal_save_session(FALSE);

  _session_test_set($value);

  return t('session saving was disabled, and then %val was set', array('%val' => $value));

}

/**

 * Menu callback: print the current session ID.

 */

function _session_test_id() {

  // Set a value in $_SESSION, so that drupal_session_commit() will start

  // a session.

  $_SESSION['test'] = 'test';

  drupal_session_commit();

  return 'session_id:' . session_id() . "\n";

}

/**

 * Menu callback: print the current session ID as read from the cookie.

 */

function _session_test_id_from_cookie() {

  return 'session_id:' . $_COOKIE[session_name()] . "\n";

}

/**

 * Menu callback, sets a message to me displayed on the following page.

 */

function _session_test_set_message() {

  drupal_set_message(t('This is a dummy message.'));

  print t('A message was set.');

  // Do not return anything, so the current request does not result in a themed

  // page with messages. The message will be displayed in the following request

  // instead.

}

/**

 * Menu callback, sets a message but call drupal_save_session(FALSE).

 */

function _session_test_set_message_but_dont_save() {

  drupal_save_session(FALSE);

  _session_test_set_message();

}

/**

 * Menu callback, stores a value in $_SESSION['session_test_value'] without

 * having started the session in advance.

 */

function _session_test_set_not_started() {

  if (!drupal_session_will_start()) {

    $_SESSION['session_test_value'] = t('Session was not started');

  }

}

/**

 * Implements hook_user().

 */

function session_test_user_login($edit = array(), $user = NULL) {

  if ($user->name == 'session_test_user') {

    // Exit so we can verify that the session was regenerated

    // before hook_user() was called.

    exit;

  }

}

/**

 * Implements hook_form_FORM_ID_alter().

 */

function session_test_form_user_login_alter(&$form) {

  $form['#https'] = TRUE;

}

/**

 * Implements hook_drupal_goto_alter().

 *

 * Force the redirection to go to a non-secure page after being on a secure

 * page through https.php.

 */

function session_test_drupal_goto_alter(&$path, &$options, &$http_response_code) {

  global $base_insecure_url, $is_https_mock;

  // Alter the redirect to use HTTP when using a mock HTTPS request through

  // https.php because form submissions would otherwise redirect to a

  // non-existent HTTPS site.

  if (!empty($is_https_mock)) {

    $path = $base_insecure_url . '/' . $path;

  }

}

/**

 * Menu callback, only available if current user is logged in.

 */

function _session_test_is_logged_in() {

  return t('User is logged in.');

}