function handle_request()
{
$json = new Services_JSON();
try {
global $_PA, $HTTP_RAW_POST_DATA;
if (!@$_PA->enable_widgetization_server) {
$this->fail("Widget server is not enabled; you must set \$_PA->enable_widgetization_server = TRUE in local_config.php.");
}
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
$this->fail("This URL handles POST requests only");
}
if ($_SERVER['CONTENT_TYPE'] != 'application/x-javascript') {
$this->fail("Content-Type of application/x-javascript required");
}
// Parse input
$request = $json->decode($HTTP_RAW_POST_DATA);
if ($request == NULL) {
$this->fail("Null request");
}
if (@$_PA->log_widget_requests) {
Logger::log("WidgetServer::handle_request(): request={$HTTP_RAW_POST_DATA}", LOGGER_ACTION);
}
$this->global = $request->global;
// This should probably be in config.inc. For the moment
// we figure out the network based on the URL, as with the
// rest of the system.
PA::$network_info = get_network_info();
$lang = "english";
if (!empty($this->global->language)) {
switch ($this->global->language) {
case 'en':
break;
case 'fr':
$lang = "french";
break;
default:
$this->fail("Unknown language: {$this->global}->language");
}
}
PA::load_language($lang);
// Create items as required
if (!empty($this->global->items)) {
foreach ($this->global->items as $item) {
$item_params = array();
foreach ($item as $k => $v) {
$item_params[$k] = $v;
}
Item::sync($item_params);
// create or update row in 'items' database table
}
}
// Set up globals - network, user etc
if (!empty($this->global->user)) {
$user_info = array("user_id" => $this->global->user->id, "login_name" => $this->global->user->login, "email" => $this->global->user->email, "first_name" => $this->global->user->first_name, "last_name" => $this->global->user->last_name, "url" => $this->global->user->url, "thumbnail_url" => $this->global->user->thumbnail_url);
// load (and sync!) or create a shadow user for the current remote user
PA::$login_user = new ShadowUser($this->global->user->namespace);
if (!PA::$login_user->load($user_info)) {
// we haven't seen this remote user before - create account
PA::$login_user = ShadowUser::create($this->global->user->namespace, $user_info, PA::$network_info);
//FIXME: need to define what remote urls mean. in this case "url" should be used instead of /users/$login_name when generating internal urls, so it should go in a global profile block rather than something specific to the remote site.
PA::$login_user->set_profile_field($this->global->user->namespace, "url", $this->global->user->url);
}
PA::$login_uid = PA::$login_user->user_id;
}
// Render modules
$modules = array();
foreach ($request->modules as $req_module) {
$module = array();
$module['id'] = $req_module->id;
$module['name'] = $name = $req_module->name;
$params = array();
foreach ($req_module->params as $k => $v) {
$params[$k] = $v;
}
// clean up URLs that may have the port 80 specified
// this would lead to cross server AJAX problems in safari etc
// although we are actually on the same server
// domain.tld:80/file/ and domain.tld/file/
foreach (array('get_url', 'ajax_url', 'post_url') as $i => $url) {
$req_module->{$url} = preg_replace('|:80/*|', '/', $req_module->{$url});
}
// dispatch module
ob_start();
$module['html'] = $this->render_module($req_module->method, $req_module->name, $req_module->args, $params, $req_module->get_url, $req_module->ajax_url, $req_module->post_url, $req_module->param_prefix);
// prefix for input parameters and textareas
$errors = ob_get_contents();
ob_end_clean();
if (!empty($errors)) {
$module['errors'] = $errors;
}
$modules[] = $module;
}
$response = array('modules' => $modules);
header("Content-Type: application/x-javascript");
echo $json->encode($response);
} catch (WidgetException $e) {
echo $json->encode(array("error" => $e->getMessage()));
}
}
