nextcloud/lib/public/AppFramework/Controller.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Bernhard Posselt <dev@bernhard-posselt.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
*/
/**
* Public interface of ownCloud for apps to use.
* AppFramework\Controller class
*/
namespace OCP\AppFramework;
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use OCP\AppFramework\Http\JSONResponse;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\Response;
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use OCP\IRequest;
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/**
* Base class to inherit your controllers from
* @since 6.0.0
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*/
abstract class Controller {
/**
* app name
* @var string
* @since 7.0.0
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*/
protected $appName;
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/**
* current request
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* @var \OCP\IRequest
* @since 6.0.0
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*/
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protected $request;
/**
* @var array
* @since 7.0.0
*/
private $responders;
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/**
* constructor of the controller
* @param string $appName the name of the app
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* @param IRequest $request an instance of the request
* @since 6.0.0 - parameter $appName was added in 7.0.0 - parameter $app was removed in 7.0.0
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*/
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public function __construct($appName,
Add public API to give developers the possibility to adjust the global CSP defaults Allows to inject something into the default content policy. This is for example useful when you're injecting Javascript code into a view belonging to another controller and cannot modify its Content-Security-Policy itself. Note that the adjustment is only applied to applications that use AppFramework controllers. To use this from your `app.php` use `\OC::$server->getContentSecurityPolicyManager()->addDefaultPolicy($policy)`, $policy has to be of type `\OCP\AppFramework\Http\ContentSecurityPolicy`. To test this add something like the following into an `app.php` of any enabled app: ``` $manager = \OC::$server->getContentSecurityPolicyManager(); $policy = new \OCP\AppFramework\Http\ContentSecurityPolicy(false); $policy->addAllowedFrameDomain('asdf'); $policy->addAllowedScriptDomain('yolo.com'); $policy->allowInlineScript(false); $manager->addDefaultPolicy($policy); $policy = new \OCP\AppFramework\Http\ContentSecurityPolicy(false); $policy->addAllowedFontDomain('yolo.com'); $manager->addDefaultPolicy($policy); $policy = new \OCP\AppFramework\Http\ContentSecurityPolicy(false); $policy->addAllowedFrameDomain('banana.com'); $manager->addDefaultPolicy($policy); ``` If you now open the files app the policy should be: ``` Content-Security-Policy:default-src 'none';script-src yolo.com 'self' 'unsafe-eval';style-src 'self' 'unsafe-inline';img-src 'self' data: blob:;font-src yolo.com 'self';connect-src 'self';media-src 'self';frame-src asdf banana.com 'self' ```
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IRequest $request) {
$this->appName = $appName;
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$this->request = $request;
// default responders
$this->responders = array(
'json' => function ($data) {
if ($data instanceof DataResponse) {
$response = new JSONResponse(
$data->getData(),
$data->getStatus()
);
$dataHeaders = $data->getHeaders();
$headers = $response->getHeaders();
// do not overwrite Content-Type if it already exists
if (isset($dataHeaders['Content-Type'])) {
unset($headers['Content-Type']);
}
$response->setHeaders(array_merge($dataHeaders, $headers));
return $response;
}
return new JSONResponse($data);
}
);
}
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/**
* Parses an HTTP accept header and returns the supported responder type
* @param string $acceptHeader
* @param string $default
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* @return string the responder type
* @since 7.0.0
* @since 9.1.0 Added default parameter
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*/
public function getResponderByHTTPHeader($acceptHeader, $default='json') {
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$headers = explode(',', $acceptHeader);
// return the first matching responder
foreach ($headers as $header) {
$header = strtolower(trim($header));
$responder = str_replace('application/', '', $header);
if (array_key_exists($responder, $this->responders)) {
return $responder;
}
}
// no matching header return default
return $default;
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}
/**
* Registers a formatter for a type
* @param string $format
* @param \Closure $responder
* @since 7.0.0
*/
protected function registerResponder($format, \Closure $responder) {
$this->responders[$format] = $responder;
}
/**
* Serializes and formats a response
* @param mixed $response the value that was returned from a controller and
* is not a Response instance
* @param string $format the format for which a formatter has been registered
* @throws \DomainException if format does not match a registered formatter
* @return Response
* @since 7.0.0
*/
public function buildResponse($response, $format='json') {
if(array_key_exists($format, $this->responders)) {
$responder = $this->responders[$format];
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return $responder($response);
}
throw new \DomainException('No responder registered for format '.
$format . '!');
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}
}