/**
* The default handler for following redirects, triggered by the presence of
* a Location header in the response.
*
* The client's follow property must be set TRUE and the HTTP response status
* one of 201, 301, 302, 303 or 307 for the redirect to be followed.
*
* @param Request $request
* @param Response $response
* @param Request_Client $client
*/
public static function on_header_location(Request $request, Response $response, Request_Client $client)
{
// Do we need to follow a Location header ?
if ($client->follow() and in_array($response->status(), array(201, 301, 302, 303, 307))) {
// Figure out which method to use for the follow request
switch ($response->status()) {
default:
case 301:
case 307:
$follow_method = $request->method();
break;
case 201:
case 303:
$follow_method = Request::GET;
break;
case 302:
// Cater for sites with broken HTTP redirect implementations
if ($client->strict_redirect()) {
$follow_method = $request->method();
} else {
$follow_method = Request::GET;
}
break;
}
// Prepare the additional request, copying any follow_headers that were present on the original request
$orig_headers = $request->headers()->getArrayCopy();
$follow_header_keys = array_intersect(array_keys($orig_headers), $client->follow_headers());
$follow_headers = \Arr::extract($orig_headers, $follow_header_keys);
$follow_request = Request::factory($response->headers('Location'))->method($follow_method)->headers($follow_headers);
if ($follow_method !== Request::GET) {
$follow_request->body($request->body());
}
return $follow_request;
}
return NULL;
}
/**
* Header callback for testing that arbitrary callback_params are available
* to the callback.
*
* @param Request $request
* @param Response $response
* @param Request_Client $client
*/
public function callback_assert_params($request, $response, $client)
{
$this->assertEquals('foo', $client->callback_params('constructor_param'));
$this->assertEquals('bar', $client->callback_params('setter_param'));
$response->body('assertions_ran');
}
/**
* Executes the supplied [Request] with the supplied [Request_Client].
* Before execution, the HTTP_Cache adapter checks the request type,
* destructive requests such as `POST`, `PUT` and `DELETE` will bypass
* cache completely and ensure the response is not cached. All other
* Request methods will allow caching, if the rules are met.
*
* @param Request_Client $client client to execute with Cache-Control
* @param Request $request request to execute with client
* @return [Response]
*/
public function execute(Request_Client $client, Request $request, Response $response)
{
if (!$this->_cache instanceof Cache) {
return $client->execute_request($request, $response);
}
// If this is a destructive request, by-pass cache completely
if (in_array($request->method(), array(HTTP_Request::POST, HTTP_Request::PUT, HTTP_Request::DELETE))) {
// Kill existing caches for this request
$this->invalidate_cache($request);
$response = $client->execute_request($request, $response);
$cache_control = HTTP_Header::create_cache_control(array('no-cache', 'must-revalidate'));
// Ensure client respects destructive action
return $response->headers('cache-control', $cache_control);
}
// Create the cache key
$cache_key = $this->create_cache_key($request, $this->_cache_key_callback);
// Try and return cached version
if (($cached_response = $this->cache_response($cache_key, $request)) instanceof Response) {
return $cached_response;
}
// Start request time
$this->_request_time = time();
// Execute the request with the Request client
$response = $client->execute_request($request, $response);
// Stop response time
$this->_response_time = time() - $this->_request_time;
// Cache the response
$this->cache_response($cache_key, $request, $response);
$response->headers(HTTP_Cache::CACHE_STATUS_KEY, HTTP_Cache::CACHE_STATUS_MISS);
return $response;
}
/**
* Assigns the properties of the current Request_Client to another
* Request_Client instance - used when setting up a subsequent request.
*
* @param Request_Client $client
*/
public function assign_client_properties(Request_Client $client)
{
$client->cache($this->cache());
$client->follow($this->follow());
$client->follow_headers($this->follow_headers());
$client->header_callbacks($this->header_callbacks());
$client->max_callback_depth($this->max_callback_depth());
$client->callback_params($this->callback_params());
}
public static function on_header_location(Request $request, Response $response, Request_Client $client)
{
if ($client->follow() and in_array($response->status(), array(201, 301, 302, 303, 307))) {
switch ($response->status()) {
default:
case 301:
case 307:
$follow_method = $request->method();
break;
case 201:
case 303:
$follow_method = Request::GET;
break;
case 302:
if ($client->strict_redirect()) {
$follow_method = $request->method();
} else {
$follow_method = Request::GET;
}
break;
}
$orig_headers = $request->headers()->getArrayCopy();
$follow_header_keys = array_intersect(array_keys($orig_headers), $client->follow_headers());
$follow_headers = \Arr::extract($orig_headers, $follow_header_keys);
$follow_request = Request::factory($response->headers("Location"))->method($follow_method)->headers($follow_headers);
if ($follow_method !== Request::GET) {
$follow_request->body($request->body());
}
return $follow_request;
}
return NULL;
}
/**
* Processes the request, executing the controller action that handles this
* request, determined by the [Route].
*
* 1. Before the controller action is called, the [Controller::before] method
* will be called.
* 2. Next the controller action will be called.
* 3. After the controller action is called, the [Controller::after] method
* will be called.
*
* By default, the output from the controller is captured and returned, and
* no headers are sent.
*
* Example:
* ~~~
* $request->execute();
* ~~~
*
* @return Response
*
* @throws Request_Exception
*
* @throws HTTP_Exception_404
* @uses [Kohana::$profiling]
* @uses [Profiler]
* @uses Gleez::block_ips
* @uses Gleez::maintenance_mode
*/
public function execute()
{
if (Gleez::$installed) {
// Deny access to blocked IP addresses
Gleez::block_ips();
// Check Maintenance Mode
Gleez::maintenance_mode();
}
if (!$this->_external) {
$processed = Request::process($this, $this->_routes);
if ($processed) {
// Store the matching route
$this->_route = $processed['route'];
$params = $processed['params'];
// Is this route external?
$this->_external = $this->_route->is_external();
if (isset($params['directory'])) {
// Controllers are in a sub-directory
$this->_directory = $params['directory'];
}
// Store the controller
$this->_controller = $params['controller'];
// Store the action
$this->_action = isset($params['action']) ? $params['action'] : Route::$default_action;
// These are accessible as public vars and can be overloaded
unset($params['controller'], $params['action'], $params['directory']);
// Params cannot be changed once matched
$this->_params = $params;
}
}
if (!$this->_route instanceof Route) {
return HTTP_Exception::factory(404, 'Unable to find a route to match the URI: :uri', array(':uri' => $this->_uri))->request($this)->get_response();
}
if (!$this->_client instanceof Request_Client) {
throw new Request_Exception('Unable to execute :uri without a Kohana_Request_Client', array(':uri' => $this->_uri));
}
return $this->_client->execute($this);
}
