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<?php |
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/** |
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* File containing the PermissionsHelper class |
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* |
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* This file is part of the MediaWiki skin Chameleon. |
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* |
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* @copyright 2013 - 2014, Stephan Gambke |
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* @license GNU General Public License, version 3 (or any later version) |
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* |
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* The Chameleon skin is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by the Free |
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* Software Foundation, either version 3 of the License, or (at your option) any |
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* later version. |
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* |
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* The Chameleon skin is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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* details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @file |
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* @ingroup Skins |
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*/ |
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namespace Skins\Chameleon; |
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use DOMElement; |
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/** |
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* PermissionsHelper class |
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* |
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* @author Stephan Gambke |
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* @since 1.1 |
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* @ingroup Skins |
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*/ |
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class PermissionsHelper { |
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private $domElement; |
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private $skin; |
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private $default; |
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/** |
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* @param \SkinChameleon $skin |
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* @param DOMElement $domElement |
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* @param bool $default |
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*/ |
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public function __construct( \SkinChameleon $skin, DOMElement $domElement = null, $default = false ) { |
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$this->skin = $skin; |
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$this->domElement = $domElement; |
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$this->default = $default; |
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} |
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/** |
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* @since 1.1 |
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* |
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* @param string $attributeNameInDomElement |
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* |
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* @return bool |
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*/ |
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public function userHasGroup( $attributeNameInDomElement ) { |
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return $this->userHas( 'group', $attributeNameInDomElement ); |
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} |
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/** |
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* @param string $attributeOfUser |
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* @param string $attributeNameInDomElement |
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* |
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* @throws \MWException |
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* @return bool |
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*/ |
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protected function userHas( $attributeOfUser, $attributeNameInDomElement ) { |
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$user = $this->skin->getUser(); |
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$attributeAccessors = array( |
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'group' => array( $user, 'getEffectiveGroups' ), |
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'permission' => array( $user, 'getRights' ), |
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); |
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if ( !array_key_exists( $attributeOfUser, $attributeAccessors ) ) { |
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throw new \MWException( sprintf( 'Unknown permission: %s', $attributeOfUser ) ); |
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} |
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if ( !$this->hasAttribute( $attributeNameInDomElement ) ) { |
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return $this->default; |
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} |
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$expectedValues = $this->getValueListFromAttribute( $attributeNameInDomElement ); |
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$observedValues = call_user_func( $attributeAccessors[ $attributeOfUser ] ); |
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$effectiveValues = array_intersect( $expectedValues, $observedValues ); |
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return !empty( $effectiveValues ); |
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} |
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/** |
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* @since 1.1 |
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* |
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* @param string $attributeNameInDomElement |
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* |
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* @return bool |
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*/ |
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public function hasAttribute( $attributeNameInDomElement ) { |
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return $this->domElement !== null && $this->domElement->hasAttribute( $attributeNameInDomElement ); |
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} |
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/** |
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* @param string $attributeName |
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* |
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* @return string[] |
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*/ |
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protected function getValueListFromAttribute( $attributeName ) { |
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return $this->domElement === null ? array() : array_map( 'trim', explode( ',', $this->domElement->getAttribute( $attributeName ) ) ); |
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} |
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/** |
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* @since 1.1 |
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* |
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* @param string $attributeNameInDomElement |
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* |
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* @return bool |
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*/ |
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public function userHasPermission( $attributeNameInDomElement ) { |
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return $this->userHas( 'permission', $attributeNameInDomElement ); |
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} |
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/** |
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* @since 1.1 |
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* |
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* @param string $attributeNameInDomElement |
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* |
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* @return bool |
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*/ |
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public function pageIsInNamespace( $attributeNameInDomElement ) { |
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if ( !$this->hasAttribute( $attributeNameInDomElement ) ) { |
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return $this->default; |
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} |
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$expectedNamespaces = array_map( array( $this, 'getNamespaceNumberFromDefinedConstantName' ), $this->getValueListFromAttribute( $attributeNameInDomElement ) ); |
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$pageNamespace = $this->skin->getTitle()->getNamespace(); |
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return in_array( $pageNamespace, $expectedNamespaces ); |
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} |
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/** |
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* @param null|string $value |
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* |
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* @return int |
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*/ |
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protected function getNamespaceNumberFromDefinedConstantName( $value ) { |
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$constants = get_defined_constants(); |
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if ( !is_null( $value ) && array_key_exists( $value, $constants ) ) { |
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$value = $constants[ $value ]; |
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} |
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return is_int( $value ) ? $value : -1; |
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} |
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} |
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wikimedia /
mediawiki-skins-chameleon
