Created
August 20, 2012 19:05
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| <?php | |
| /** | |
| * Implements hook_page_delivery_callback_alter(). | |
| * | |
| * The idea for this came from this page: | |
| * http://drupal.stackexchange.com/questions/327/how-can-a-module-detect-when-drupal-is-outputting-the-access-denied-page | |
| */ | |
| function custom_page_delivery_callback_alter(&$callback) { | |
| if ($callback == 'drupal_deliver_html_page') { | |
| $callback = 'custom_deliver_html_page'; | |
| } | |
| } | |
| /** | |
| * This is a copy of drupal_deliver_html_page(). | |
| * | |
| * The MENU_ACCESS_DENIED section has been modified to show a view mode | |
| * for a user who does not have access to the Press Kit node. | |
| */ | |
| function custom_deliver_html_page($page_callback_result) { | |
| // Emit the correct charset HTTP header, but not if the page callback | |
| // result is NULL, since that likely indicates that it printed something | |
| // in which case, no further headers may be sent, and not if code running | |
| // for this page request has already set the content type header. | |
| if (isset($page_callback_result) && is_null(drupal_get_http_header('Content-Type'))) { | |
| drupal_add_http_header('Content-Type', 'text/html; charset=utf-8'); | |
| } | |
| // Send appropriate HTTP-Header for browsers and search engines. | |
| global $language; | |
| drupal_add_http_header('Content-Language', $language->language); | |
| // Menu status constants are integers; page content is a string or array. | |
| if (is_int($page_callback_result)) { | |
| // @todo: Break these up into separate functions? | |
| switch ($page_callback_result) { | |
| case MENU_NOT_FOUND: | |
| // Print a 404 page. | |
| drupal_add_http_header('Status', '404 Not Found'); | |
| watchdog('page not found', check_plain($_GET['q']), NULL, WATCHDOG_WARNING); | |
| // Check for and return a fast 404 page if configured. | |
| drupal_fast_404(); | |
| // Keep old path for reference, and to allow forms to redirect to it. | |
| if (!isset($_GET['destination'])) { | |
| $_GET['destination'] = $_GET['q']; | |
| } | |
| $path = drupal_get_normal_path(variable_get('site_404', '')); | |
| if ($path && $path != $_GET['q']) { | |
| // Custom 404 handler. Set the active item in case there are tabs to | |
| // display, or other dependencies on the path. | |
| menu_set_active_item($path); | |
| $return = menu_execute_active_handler($path, FALSE); | |
| } | |
| if (empty($return) || $return == MENU_NOT_FOUND || $return == MENU_ACCESS_DENIED) { | |
| // Standard 404 handler. | |
| drupal_set_title(t('Page not found')); | |
| $return = t('The requested page "@path" could not be found.', array('@path' => request_uri())); | |
| } | |
| drupal_set_page_content($return); | |
| $page = element_info('page'); | |
| print drupal_render_page($page); | |
| break; | |
| case MENU_ACCESS_DENIED: | |
| // Print a 403 page. | |
| drupal_add_http_header('Status', '403 Forbidden'); | |
| watchdog('access denied', check_plain($_GET['q']), NULL, WATCHDOG_WARNING); | |
| // Keep old path for reference, and to allow forms to redirect to it. | |
| if (!isset($_GET['destination'])) { | |
| $_GET['destination'] = $_GET['q']; | |
| } | |
| $path = drupal_get_normal_path(variable_get('site_403', '')); | |
| if ($path && $path != $_GET['q']) { | |
| // Custom 403 handler. Set the active item in case there are tabs to | |
| // display or other dependencies on the path. | |
| menu_set_active_item($path); | |
| $return = menu_execute_active_handler($path, FALSE); | |
| } | |
| if (empty($return) || $return == MENU_NOT_FOUND || $return == MENU_ACCESS_DENIED) { | |
| // Standard 403 handler. | |
| drupal_set_title(t('Access denied')); | |
| $return = t('You are not authorized to access this page.'); | |
| } | |
| // Load the view mode for the non-logged in version of this node. | |
| // Have to use node_load()/arg() here because menu_get_object() returns nothing. | |
| $node = node_load(arg(1)); | |
| if ($node->type = 'press_kit') { | |
| $return = node_view($node, 'press_kit_not_authenticated'); | |
| } | |
| if (isset($return['links']['node']['#links']['node-readmore'])) { | |
| unset($return['links']['node']['#links']['node-readmore']); | |
| } | |
| print drupal_render_page($return); | |
| break; | |
| case MENU_SITE_OFFLINE: | |
| // Print a 503 page. | |
| drupal_maintenance_theme(); | |
| drupal_add_http_header('Status', '503 Service unavailable'); | |
| drupal_set_title(t('Site under maintenance')); | |
| print theme('maintenance_page', array('content' => filter_xss_admin(variable_get('maintenance_mode_message', | |
| t('@site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('@site' => variable_get('site_name', 'Drupal'))))))); | |
| break; | |
| } | |
| } | |
| elseif (isset($page_callback_result)) { | |
| // Print anything besides a menu constant, assuming it's not NULL or | |
| // undefined. | |
| print drupal_render_page($page_callback_result); | |
| } | |
| // Perform end-of-request tasks. | |
| drupal_page_footer(); | |
| } |
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