<?php

/**
 * Implements hook_menu().
 */
function system_test_menu() {
  $items['system-test/sleep/%'] = array(
    'page callback' => 'system_test_sleep',
    'page arguments' => array(2),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['system-test/auth'] = array(
    'page callback' => 'system_test_basic_auth_page',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['system-test/authorize-init/%'] = array(
    'page callback' => 'system_test_authorize_init_page',
    'page arguments' => array(2),
    'access arguments' => array('administer software updates'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/redirect/%'] = array(
    'title' => 'Redirect',
    'page callback' => 'system_test_redirect',
    'page arguments' => array(2),
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/multiple-redirects/%'] = array(
    'title' => 'Redirect',
    'page callback' => 'system_test_multiple_redirects',
    'page arguments' => array(2),
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/set-header'] = array(
    'page callback' => 'system_test_set_header',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/redirect-noscheme'] = array(
    'page callback' => 'system_test_redirect_noscheme',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/redirect-noparse'] = array(
    'page callback' => 'system_test_redirect_noparse',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['system-test/redirect-invalid-scheme'] = array(
    'page callback' => 'system_test_redirect_invalid_scheme',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );

  $items['system-test/variable-get'] = array(
    'title' => 'Variable Get',
    'page callback' => 'variable_get',
    'page arguments' => array('simpletest_bootstrap_variable_test', NULL),
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );

  $items['system-test/lock-acquire'] = array(
    'title' => 'Lock acquire',
    'page callback' => 'system_test_lock_acquire',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/lock-exit'] = array(
    'title' => 'Lock acquire then exit',
    'page callback' => 'system_test_lock_exit',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/drupal-set-message'] = array(
    'title' => 'Set messages with drupal_set_message()',
    'page callback' => 'system_test_drupal_set_message',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/main-content-handling'] = array(
    'title' => 'Test main content handling',
    'page callback' => 'system_test_main_content_fallback',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/main-content-fallback'] = array(
    'title' => 'Test main content fallback',
    'page callback' => 'system_test_main_content_fallback',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/main-content-duplication'] = array(
    'title' => 'Test main content duplication',
    'page callback' => 'system_test_main_content_fallback',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/shutdown-functions'] = array(
    'title' => 'Test main content duplication',
    'page callback' => 'system_test_page_shutdown_functions',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/get-destination'] = array(
    'title' => 'Test $_GET[\'destination\']',
    'page callback' => 'system_test_get_destination',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/request-destination'] = array(
    'title' => 'Test $_REQUEST[\'destination\']',
    'page callback' => 'system_test_request_destination',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/drupal-get-filename'] = array(
    'title' => 'Test drupal_get_filename()',
    'page callback' => 'system_test_drupal_get_filename',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  $items['system-test/drupal-get-filename-with-schema-rebuild'] = array(
    'title' => 'Test drupal_get_filename() with a schema rebuild',
    'page callback' => 'system_test_drupal_get_filename_with_schema_rebuild',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  return $items;
}

function system_test_sleep($seconds) {
  sleep($seconds);
}

function system_test_basic_auth_page() {
  // The Authorization HTTP header is forwarded via Drupal's .htaccess file even
  // for PHP CGI SAPIs.
  if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
    $authorization_header = $_SERVER['HTTP_AUTHORIZATION'];
  }
  // If using CGI on Apache with mod_rewrite, the forwarded HTTP header appears
  // in the redirected HTTP headers. See
  // https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpFoundation/ServerBag.php#L61
  elseif (isset($_SERVER['REDIRECT_HTTP_AUTHORIZATION'])) {
    $authorization_header = $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];
  }
  // Resemble PHP_AUTH_USER and PHP_AUTH_PW for a Basic authentication from
  // the HTTP_AUTHORIZATION header. See
  // http://www.php.net/manual/features.http-auth.php
  list($user, $pw) = explode(':', base64_decode(substr($authorization_header, 6)));
  $output = t('Username is @username.', array('@username' => $user));
  $output .= t('Password is @password.', array('@password' => $pw));
  return $output;
}

function system_test_redirect($code) {
  $code = (int) $code;
  if ($code != 200) {
    // Header names are case-insensitive.
    header("locaTION: " . url('system-test/redirect/200', array('absolute' => TRUE)), TRUE, $code);
    exit;
  }
  return '';
}

/**
 * Menu callback; sends a redirect header to itself until $count argument is 0.
 *
 * Emulates the variable number of redirects (given by initial $count argument)
 * to the final destination URL by continuous sending of 301 HTTP redirect
 * headers to itself together with decrementing the $count parameter until the
 * $count parameter reaches 0. After that it returns an empty string to render
 * the final destination page.
 *
 * @param $count
 *   The count of redirects left until the final destination page.
 *
 * @returns
 *   The location redirect if the $count > 0, otherwise an empty string.
 */
function system_test_multiple_redirects($count) {
  $count = (int) $count;
  if ($count > 0) {
    header("location: " . url('system-test/multiple-redirects/' . --$count, array('absolute' => TRUE)), TRUE, 301);
    exit;
  }
  return '';
}

function system_test_set_header() {
  drupal_add_http_header($_GET['name'], $_GET['value']);
  return t('The following header was set: %name: %value', array('%name' => $_GET['name'], '%value' => $_GET['value']));
}

function system_test_redirect_noscheme() {
  header("Location: localhost/path", TRUE, 301);
  exit;
}

function system_test_redirect_noparse() {
  header("Location: http:///path", TRUE, 301);
  exit;
}

function system_test_redirect_invalid_scheme() {
  header("Location: ftp://localhost/path", TRUE, 301);
  exit;
}

/**
 * Implements hook_modules_installed().
 */
function system_test_modules_installed($modules) {
  if (variable_get('test_verbose_module_hooks')) {
    foreach ($modules as $module) {
      drupal_set_message(t('hook_modules_installed fired for @module', array('@module' => $module)));
    }
  }
}

/**
 * Implements hook_modules_enabled().
 */
function system_test_modules_enabled($modules) {
  if (variable_get('test_verbose_module_hooks')) {
    foreach ($modules as $module) {
      drupal_set_message(t('hook_modules_enabled fired for @module', array('@module' => $module)));
    }
  }
}

/**
 * Implements hook_modules_disabled().
 */
function system_test_modules_disabled($modules) {
  if (variable_get('test_verbose_module_hooks')) {
    foreach ($modules as $module) {
      drupal_set_message(t('hook_modules_disabled fired for @module', array('@module' => $module)));
    }
  }
}

/**
 * Implements hook_modules_uninstalled().
 */
function system_test_modules_uninstalled($modules) {
  if (variable_get('test_verbose_module_hooks')) {
    foreach ($modules as $module) {
      drupal_set_message(t('hook_modules_uninstalled fired for @module', array('@module' => $module)));
    }
  }
}

/**
 * Implements hook_boot().
 */
function system_test_boot() {
  watchdog('system_test', 'hook_boot');
}

/**
 * Implements hook_init().
 */
function system_test_init() {
  // Used by FrontPageTestCase to get the results of drupal_is_front_page().
  if (variable_get('front_page_output', 0) && drupal_is_front_page()) {
    drupal_set_message(t('On front page.'));
  }
}

/**
 * Implements hook_exit().
 */
function system_test_exit() {
  watchdog('system_test', 'hook_exit');
}

/**
 * Implements hook_system_info_alter().
 */
function system_test_system_info_alter(&$info, $file, $type) {
  // We need a static otherwise the last test will fail to alter common_test.
  static $test;
  if (($dependencies = variable_get('dependencies', array())) || $test) {
    if ($file->name == 'module_test') {
      $info['hidden'] = FALSE;
      $info['dependencies'][] = array_shift($dependencies);
      variable_set('dependencies', $dependencies);
      $test = TRUE;
    }
    if ($file->name == 'common_test') {
      $info['hidden'] = FALSE;
      $info['version'] = '7.x-2.4-beta3';
    }
  }

  if ($file->name == 'system_project_namespace_test') {
    $info['hidden'] = FALSE;
  }
  // Make the system_dependencies_test visible by default.
  if ($file->name == 'system_dependencies_test') {
    $info['hidden'] = FALSE;
  }
  if (in_array($file->name, array(
    'system_incompatible_module_version_dependencies_test',
    'system_incompatible_core_version_dependencies_test',
    'system_incompatible_module_version_test',
    'system_incompatible_core_version_test',
  ))) {
    $info['hidden'] = FALSE;
  }
  if ($file->name == 'requirements1_test' || $file->name == 'requirements2_test') {
    $info['hidden'] = FALSE;
  }
}

/**
 * Try to acquire a named lock and report the outcome.
 */
function system_test_lock_acquire() {
  if (lock_acquire('system_test_lock_acquire')) {
    lock_release('system_test_lock_acquire');
    return 'TRUE: Lock successfully acquired in system_test_lock_acquire()';
  }
  else {
    return 'FALSE: Lock not acquired in system_test_lock_acquire()';
  }
}

/**
 * Try to acquire a specific lock, and then exit.
 */
function system_test_lock_exit() {
  if (lock_acquire('system_test_lock_exit', 900)) {
    echo 'TRUE: Lock successfully acquired in system_test_lock_exit()';
    // The shut-down function should release the lock.
    exit();
  }
  else {
    return 'FALSE: Lock not acquired in system_test_lock_exit()';
  }
}

/**
 * Implements hook_page_build().
 */
function system_test_page_build(&$page) {
  $menu_item = menu_get_item();
  $main_content_display = &drupal_static('system_main_content_added', FALSE);

  if ($menu_item['path'] == 'system-test/main-content-handling') {
    $page['footer'] = drupal_set_page_content();
    $page['footer']['main']['#markup'] = '<div id="system-test-content">' . $page['footer']['main']['#markup'] . '</div>';
  }
  elseif ($menu_item['path'] == 'system-test/main-content-fallback') {
    drupal_set_page_content();
    $main_content_display = FALSE;
  }
  elseif ($menu_item['path'] == 'system-test/main-content-duplication') {
    drupal_set_page_content();
  }
}

/**
 * Menu callback to test main content fallback().
 */
function system_test_main_content_fallback() {
  return t('Content to test main content fallback');
}

/**
 * A simple page callback which adds a register shutdown function.
 */
function system_test_page_shutdown_functions($arg1, $arg2) {
  drupal_register_shutdown_function('_system_test_first_shutdown_function', $arg1, $arg2);
}

/**
 * Dummy shutdown function which registers another shutdown function.
 */
function _system_test_first_shutdown_function($arg1, $arg2) {
  // Output something, page has already been printed and the session stored
  // so we can't use drupal_set_message.
  print t('First shutdown function, arg1 : @arg1, arg2: @arg2', array('@arg1' => $arg1, '@arg2' => $arg2));
  drupal_register_shutdown_function('_system_test_second_shutdown_function', $arg1, $arg2);
}

/**
 * Dummy shutdown function.
 */
function _system_test_second_shutdown_function($arg1, $arg2) {
  // Output something, page has already been printed and the session stored
  // so we can't use drupal_set_message.
  print t('Second shutdown function, arg1 : @arg1, arg2: @arg2', array('@arg1' => $arg1, '@arg2' => $arg2));

  // Throw an exception with an HTML tag. Since this is called in a shutdown
  // function, it will not bubble up to the default exception handler but will
  // be caught in _drupal_shutdown_function() and be displayed through
  // _drupal_render_exception_safe().
  throw new Exception('Drupal is <blink>awesome</blink>.');
}

/**
 * Implements hook_filetransfer_info().
 */
function system_test_filetransfer_info() {
  return array(
    'system_test' => array(
      'title' => t('System Test FileTransfer'),
      'file' => 'system_test.module',  // Should be a .inc, but for test, ok.
      'class' => 'SystemTestFileTransfer',
      'weight' => -10,
    ),
  );
}

/**
 * Mock FileTransfer object to test the settings form functionality.
 */
class SystemTestFileTransfer {
  public static function factory() {
    return new SystemTestFileTransfer;
  }

  public function getSettingsForm() {
    $form = array();
    $form['system_test_username'] = array(
      '#type' => 'textfield',
      '#title' => t('System Test Username'),
    );
    return $form;
  }
}

/**
 * Page callback to initialize authorize.php during testing.
 *
 * @see system_authorized_init().
 */
function system_test_authorize_init_page($page_title) {
  $authorize_url = $GLOBALS['base_url'] . '/authorize.php';
  system_authorized_init('system_test_authorize_run', drupal_get_path('module', 'system_test') . '/system_test.module', array(), $page_title);
  drupal_goto($authorize_url);
}

/**
 * Sets two messages and removes the first one before the messages are displayed.
 */
function system_test_drupal_set_message() {
  // Set two messages.
  drupal_set_message('First message (removed).');
  drupal_set_message('Second message (not removed).');

  // Remove the first.
  unset($_SESSION['messages']['status'][0]);

  return '';
}

/**
 * Page callback to print out $_GET['destination'] for testing.
 */
function system_test_get_destination() {
  if (isset($_GET['destination'])) {
    print $_GET['destination'];
  }
  // No need to render the whole page, we are just interested in this bit of
  // information.
  exit;
}

/**
 * Page callback to print out $_REQUEST['destination'] for testing.
 */
function system_test_request_destination() {
  if (isset($_REQUEST['destination'])) {
    print $_REQUEST['destination'];
  }
  // No need to render the whole page, we are just interested in this bit of
  // information.
  exit;
}

/**
 * Page callback to run drupal_get_filename() on a particular module.
 */
function system_test_drupal_get_filename() {
  // Prevent SimpleTest from failing as a result of the expected PHP warnings
  // this function causes. Any warnings will be recorded in the database logs
  // for examination by the tests.
  define('SIMPLETEST_COLLECT_ERRORS', FALSE);

  $module_name = variable_get('system_test_drupal_get_filename_test_module_name');
  drupal_get_filename('module', $module_name);

  return '';
}

/**
 * Page callback to run drupal_get_filename() and do a schema rebuild.
 */
function system_test_drupal_get_filename_with_schema_rebuild() {
  // Prevent SimpleTest from failing as a result of the expected PHP warnings
  // this function causes.
  define('SIMPLETEST_COLLECT_ERRORS', FALSE);

  // Record the original database tables from drupal_get_schema().
  variable_set('system_test_drupal_get_filename_with_schema_rebuild_original_tables', array_keys(drupal_get_schema(NULL, TRUE)));

  // Trigger system_test_schema() and system_test_watchdog() to perform an
  // attempted recursive rebuild when drupal_get_schema() is called. See
  // BootstrapGetFilenameWebTestCase::testRecursiveRebuilds().
  variable_set('system_test_drupal_get_filename_attempt_recursive_rebuild', TRUE);
  drupal_get_schema(NULL, TRUE);

  return '';
}

/**
 * Implements hook_watchdog().
 */
function system_test_watchdog($log_entry) {
  // If an attempted recursive schema rebuild has been triggered by
  // system_test_drupal_get_filename_with_schema_rebuild(), perform the rebuild
  // in response to the missing file message triggered by system_test_schema().
  if (!variable_get('system_test_drupal_get_filename_attempt_recursive_rebuild')) {
    return;
  }
  if ($log_entry['type'] != 'php' || $log_entry['severity'] != WATCHDOG_WARNING) {
    return;
  }
  $module_name = variable_get('system_test_drupal_get_filename_test_module_name');
  if (!isset($log_entry['variables']['!message']) || strpos($log_entry['variables']['!message'], format_string('The following module is missing from the file system: %name', array('%name' => $module_name))) === FALSE) {
    return;
  }
  variable_set('system_test_drupal_get_filename_with_schema_rebuild_final_tables', array_keys(drupal_get_schema()));
}

/**
 * Implements hook_module_implements_alter().
 */
function system_test_module_implements_alter(&$implementations, $hook) {
  // For BootstrapGetFilenameWebTestCase::testRecursiveRebuilds() to work
  // correctly, this module's hook_schema() implementation cannot be either the
  // first implementation (since that would trigger a potential recursive
  // rebuild before anything is in the drupal_get_schema() cache) or the last
  // implementation (since that would trigger a potential recursive rebuild
  // after the cache is already complete). So put it somewhere in the middle.
  if ($hook == 'schema') {
    $group = $implementations['system_test'];
    unset($implementations['system_test']);
    $count = count($implementations);
    $implementations = array_merge(array_slice($implementations, 0, (int) ($count / 2), TRUE), array('system_test' => $group), array_slice($implementations, (int) ($count / 2), NULL, TRUE));
  }
}