function fb_url_inbound_alter in Drupal for Facebook 7.3

Same name and namespace in other branches

1. 6.3 fb_url_rewrite.inc \fb_url_inbound_alter()
2. 6.2 fb_url_rewrite.inc \fb_url_inbound_alter()
3. 7.4 fb.module \fb_url_inbound_alter()

Implements hook_url_inbound_alter().

Rewrite URLs for facebook canvas pages, and connect callbacks.

2 string references to 'fb_url_inbound_alter'

fb_canvas_fb_admin in ./fb_canvas.admin.inc

Implements hook_fb_admin().

fb_tab_fb_admin in ./fb_tab.admin.inc

Implements hook_fb_admin().

File

./fb_url_rewrite.inc, line 134

Performs custom url rewriting for Drupal for Facebook.

Code

function fb_url_inbound_alter(&$path, $original_path, $path_language) {

  // See if this is a request for us.
  if (strpos($path, FB_SETTINGS_CB . '/') === 0) {

    // Too soon for arg() function.
    $args = explode('/', $path);
    while (count($args) && in_array($args[0], _fb_settings_url_rewrite_prefixes())) {
      $key = array_shift($args);
      $value = array_shift($args);
      if (fb_settings($key) === NULL) {

        // defer to previously set values
        fb_settings($key, $value);
      }

      // Store for use later.
    }
    if (fb_settings(FB_SETTINGS_CB)) {
      if (count($args)) {
        $path = implode('/', $args);

        // remaining args
        $alias = drupal_lookup_path('source', $path, $path_language);

        //can't use drupal_get_normal_path, it calls custom_url_rewrite_inbound
        if ($alias) {
          $path = $alias;
        }
      }
      else {

        // frontpage
        $path = variable_get('site_frontpage', 'node');
        $alias = drupal_lookup_path('source', $path, $path_language);
        if ($alias) {
          $path = $alias;
        }
        $_REQUEST['destination'] = $path;

        //required workaround for compatibility with Global Redirect module, best practice?
      }
    }
  }
  else {

    //resolve aliases for non-fb-callbacks
    $alias = drupal_lookup_path('source', $path, $path_language);
    if ($alias) {
      $path = $alias;
    }
  }
  $result = $path;
}