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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Lukas Reschke <[email protected]> |
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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 |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* 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 |
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* 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, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OC\Security\CSP; |
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use OCP\AppFramework\Http\ContentSecurityPolicy; |
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use OCP\AppFramework\Http\EmptyContentSecurityPolicy; |
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use OCP\EventDispatcher\IEventDispatcher; |
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use OCP\Security\CSP\AddContentSecurityPolicyEvent; |
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use OCP\Security\IContentSecurityPolicyManager; |
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class ContentSecurityPolicyManager implements IContentSecurityPolicyManager { |
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/** @var ContentSecurityPolicy[] */ |
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private $policies = []; |
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/** @var IEventDispatcher */ |
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private $dispatcher; |
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public function __construct(IEventDispatcher $dispatcher) { |
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$this->dispatcher = $dispatcher; |
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} |
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/** {@inheritdoc} */ |
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public function addDefaultPolicy(EmptyContentSecurityPolicy $policy) { |
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$this->policies[] = $policy; |
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} |
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/** |
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* Get the configured default policy. This is not in the public namespace |
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* as it is only supposed to be used by core itself. |
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* |
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* @return ContentSecurityPolicy |
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*/ |
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public function getDefaultPolicy(): ContentSecurityPolicy { |
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$event = new AddContentSecurityPolicyEvent($this); |
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$this->dispatcher->dispatch(AddContentSecurityPolicyEvent::class, $event); |
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$defaultPolicy = new \OC\Security\CSP\ContentSecurityPolicy(); |
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foreach($this->policies as $policy) { |
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$defaultPolicy = $this->mergePolicies($defaultPolicy, $policy); |
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} |
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return $defaultPolicy; |
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} |
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/** |
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* Merges the first given policy with the second one |
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* |
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* @param ContentSecurityPolicy $defaultPolicy |
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* @param EmptyContentSecurityPolicy $originalPolicy |
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* @return ContentSecurityPolicy |
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*/ |
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public function mergePolicies(ContentSecurityPolicy $defaultPolicy, |
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EmptyContentSecurityPolicy $originalPolicy): ContentSecurityPolicy { |
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foreach((object)(array)$originalPolicy as $name => $value) { |
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$setter = 'set'.ucfirst($name); |
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if(\is_array($value)) { |
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$getter = 'get'.ucfirst($name); |
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$currentValues = \is_array($defaultPolicy->$getter()) ? $defaultPolicy->$getter() : []; |
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$defaultPolicy->$setter(array_values(array_unique(array_merge($currentValues, $value)))); |
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} elseif (\is_bool($value)) { |
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$defaultPolicy->$setter($value); |
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} |
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} |
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return $defaultPolicy; |
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} |
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} |
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nextcloud /
server
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: