3 // Copyright (c) 2011 Blue Static
5 // This program is free software: you can redistribute it and/or modify it
6 // under the terms of the GNU General Public License as published by the Free
7 // Software Foundation, either version 3 of the License, or any later version.
9 // This program is distributed in the hope that it will be useful, but WITHOUT
10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 // You should have received a copy of the GNU General Public License along with
15 // this program. If not, see <http://www.gnu.org/licenses/>.
17 namespace hoplite\http
;
19 require_once HOPLITE_ROOT
. '/base/weak_interface.php';
20 require_once HOPLITE_ROOT
. '/http/request.php';
21 require_once HOPLITE_ROOT
. '/http/response.php';
22 require_once HOPLITE_ROOT
. '/http/response_code.php';
25 The RootController is meant to be invoked from the index.php of the
31 private $request = NULL
;
34 private $response = NULL
;
37 private $url_map = NULL
;
39 /*! @var OutputFilter */
40 private $output_filter = NULL
;
42 /*! @var WeakInterface<RootControllerDelegate> */
43 private $delegate = NULL
;
46 Creates the controller with the request context information, typicallhy
47 from the global scope ($GLOBALS), but can be injected for testing.
48 @param UrlMap The routing map
49 @param OutputFilter The object responsible for decorating output.
50 @param array& PHP globals array
52 public function __construct(array $globals)
54 $this->response
= new Response();
55 $this->request
= new Request();
56 $this->request
->data
= array(
57 '_GET' => &$globals['_GET'],
58 '_POST' => &$globals['_POST'],
59 '_COOKIE' => &$globals['_COOKIE'],
60 '_SERVER' => &$globals['_SERVER']
62 $this->delegate
= new \hoplite
\base\
WeakInterface('hoplite\http\RootControllerDelegate');
66 public function request() { return $this->request
; }
67 public function response() { return $this->response
; }
69 /*! Sets the UrlMap. */
70 public function set_url_map(UrlMap
$url_map) { $this->url_map
= $url_map; }
72 /*! Sest the Output Filter. */
73 public function set_output_filter(OutputFilter
$output_filter)
75 $this->output_filter
= $output_filter;
78 /*! Sets the delegate. */
79 public function set_delegate($delegate)
81 $this->delegate
->Bind($delegate);
85 Createst the Request and Response that are used throughout the duration of
90 // The query rewriter module of the webserver rewrites a request from:
91 // http://example.com/webapp/user/view/42
93 // http://example.com/webapp/index.php/user/view/42
94 // ... which then becomes accessible from PATH_INFO.
95 $data = $this->request
->data
['_SERVER'];
96 if (isset($data['PATH_INFO']))
97 $url = $data['PATH_INFO'];
101 $url = substr($url, 1);
103 // Set the final pieces of the request.
104 $this->request
->url
= $url;
105 $this->request
->http_method
= $this->request
->data
['_SERVER']['REQUEST_METHOD'];
107 // Extract any PUT data as POST params.
108 if ($this->request
->http_method
== 'PUT')
109 parse_str(file_get_contents('php://input'), $this->request
->data
['_POST']);
111 // Register self as the active instance.
112 $GLOBALS[__CLASS__
] = $this;
114 $this->delegate
->OnInitialRequest($this->request
, $this->response
);
116 // Dispatch the request to an Action.
117 $this->RouteRequest($this->request
);
119 // When control returns here, all actions have been invoked and it's time
120 // to start the output filter and exit.
125 Prevents any other Actions from executing. This starts the OutputFilter and
128 public function Stop()
130 $this->delegate
->WillStop($this->request
, $this->response
);
131 $this->output_filter
->FilterOutput($this->request
, $this->response
);
136 Wrapper around PHP exit().
138 protected function _Exit()
144 Invoked by Run() and can be invoked by others to evaluate and perform the
145 lookup in the UrlMap. This then calls InvokeAction().
146 @param Request The Request whose URL will be routed
148 public function RouteRequest(Request
$request)
150 $this->delegate
->WillRouteRequest($request, $this->response
);
152 $url_map_value = $this->url_map
->Evaluate($request);
156 $action = $this->url_map
->LookupAction($url_map_value);
159 $this->response
->response_code
= ResponseCode
::NOT_FOUND
;
164 $this->InvokeAction($action);
168 Used to run an Action and drive it through its states.
171 public function InvokeAction(Action
$action)
173 $this->delegate
->WillInvokeAction($action, $this->request
, $this->response
);
175 $action->FilterRequest($this->request
, $this->response
);
176 $action->Invoke($this->request
, $this->response
);
177 $action->FilterResponse($this->request
, $this->response
);
179 $this->delegate
->DidInvokeAction($action, $this->request
, $this->response
);
183 Performs a reverse-lookup in the UrlMap for the pattern/fragment for the
184 name of a given Action class.
185 @param string Class name.
187 public function LookupAction($class)
189 $map = $this->url_map
->map();
190 foreach ($map as $pattern => $action) {
191 if ($action == $class)
197 Given a relative path, return an absolute path from the root controller.
198 @param string The relative path for which a URL will be created
199 @param bool Include the HTTP scheme and host to create an RFC URL if true;
200 if false an absolute path will be returned.
202 public function MakeURL($new_path, $url = FALSE
)
204 // Detect the common paths between the REQUEST_URI and the PATH_INFO. That
205 // common piece will be the path to the root controller.
206 $request_uri = $this->request()->data
['_SERVER']['REQUEST_URI'];
207 $path_info = $this->request()->data
['_SERVER']['PATH_INFO'];
208 if ($path_info === NULL
)
209 $common_uri = substr($request_uri, 0, -1);
211 $common_uri = strstr($request_uri, $path_info, TRUE
);
213 // If just constructing an absolute path, return that now.
215 return $common_uri . $new_path;
217 // Otherwise, build the host part.
219 if (isset($this->request()->data
['_SERVER']['HTTPS']) &&
220 $this->request()->data
['_SERVER']['HTTPS'] == 'on') {
223 $url .= '://' . $this->request()->data
['_SERVER']['HTTP_HOST'];
225 $port = $this->request()->data
['_SERVER']['SERVER_PORT'];
226 if ($port != 80 && $port != 443)
230 return $url . $new_path;
235 Delegate for the root controller. The controller uses WeakInterface to call
236 these methods, so they're all optional.
238 interface RootControllerDelegate
240 public function OnInitialRequest(Request
$request, Response
$response);
242 public function WillRouteRequest(Request
$request, Response
$response);
244 public function WillInvokeAction(Action
$action, Request
$request, Response
$response);
246 public function DidInvokeAction(Action
$action, Request
$request, Response
$response);
248 public function WillStop(Request
$request, Response
$response);