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<?php
/**
* Class for blocks composed from multiple blocks.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Block;
use InvalidArgumentException;
use MediaWiki\Message\Message;
use MediaWiki\Title\Title;
use MediaWiki\User\UserIdentity;
/**
* Multiple Block class.
*
* Multiple blocks exist to enforce restrictions from more than one block, if several
* blocks apply to a user/IP. Multiple blocks are created temporarily on enforcement.
*
* @since 1.34
*/
class CompositeBlock extends AbstractBlock {
/** @var AbstractBlock[] */
private $originalBlocks;
/**
* Helper method for merging multiple blocks into a composite block.
* @param AbstractBlock ...$blocks
* @return self
*/
public static function createFromBlocks( AbstractBlock ...$blocks ): self {
$originalBlocks = [];
foreach ( $blocks as $block ) {
if ( $block instanceof self ) {
$originalBlocks = array_merge( $originalBlocks, $block->getOriginalBlocks() );
} else {
$originalBlocks[] = $block;
}
}
if ( !$originalBlocks ) {
throw new InvalidArgumentException( 'No blocks given' );
}
return new self( [
'target' => $originalBlocks[0]->target,
'reason' => new Message( 'blockedtext-composite-reason' ),
'originalBlocks' => $originalBlocks,
] );
}
/**
* Create a new block with specified parameters on a user, IP or IP range.
*
* @param array $options Parameters of the block, with options supported by
* `AbstractBlock::__construct`, and also:
* - originalBlocks: (Block[]) Blocks that this block is composed from
*/
public function __construct( array $options = [] ) {
parent::__construct( $options );
$defaults = [
'originalBlocks' => [],
];
$options += $defaults;
$this->originalBlocks = $options[ 'originalBlocks' ];
$this->setHideName( $this->propHasValue( 'hideName', true ) );
$this->isHardblock( $this->propHasValue( 'isHardblock', true ) );
$this->isSitewide( $this->propHasValue( 'isSitewide', true ) );
$this->isEmailBlocked( $this->propHasValue( 'blockEmail', true ) );
$this->isCreateAccountBlocked( $this->propHasValue( 'blockCreateAccount', true ) );
$this->isUsertalkEditAllowed( !$this->propHasValue( 'allowUsertalk', false ) );
}
/**
* Determine whether any original blocks have a particular property set to a
* particular value.
*
* @param string $prop
* @param mixed $value
* @return bool At least one block has the property set to the value
*/
private function propHasValue( $prop, $value ) {
foreach ( $this->originalBlocks as $block ) {
if ( $block->$prop == $value ) {
return true;
}
}
return false;
}
/**
* Determine whether any original blocks have a particular method returning a
* particular value.
*
* @param string $method
* @param mixed $value
* @param mixed ...$params
* @return bool At least one block has the method returning the value
*/
private function methodReturnsValue( $method, $value, ...$params ) {
foreach ( $this->originalBlocks as $block ) {
if ( $block->$method( ...$params ) == $value ) {
return true;
}
}
return false;
}
/**
* Get the original blocks from which this block is composed
*
* @since 1.34
* @return AbstractBlock[]
*/
public function getOriginalBlocks() {
return $this->originalBlocks;
}
/**
* Create a clone of the object with the original blocks array set to
* something else.
*
* @since 1.42
* @param AbstractBlock[] $blocks
* @return self
*/
public function withOriginalBlocks( array $blocks ) {
$clone = clone $this;
$clone->originalBlocks = $blocks;
return $clone;
}
public function toArray(): array {
return $this->originalBlocks;
}
/**
* @inheritDoc
*/
public function getTimestamp(): string {
$minStart = null;
foreach ( $this->originalBlocks as $block ) {
$startTime = $block->getTimestamp();
if ( $minStart === null || $startTime === '' || $startTime < $minStart ) {
$minStart = $startTime;
}
}
return $minStart ?? '';
}
/**
* @inheritDoc
*/
public function getExpiry(): string {
$maxExpiry = null;
foreach ( $this->originalBlocks as $block ) {
$expiry = $block->getExpiry();
if ( $maxExpiry === null || $expiry === '' || $expiry > $maxExpiry ) {
$maxExpiry = $expiry;
}
}
return $maxExpiry ?? '';
}
/**
* @inheritDoc
*/
public function getIdentifier( $wikiId = self::LOCAL ) {
$identifier = [];
foreach ( $this->originalBlocks as $block ) {
$identifier[] = $block->getIdentifier( $wikiId );
}
return $identifier;
}
/**
* @inheritDoc
*
* Determines whether the CompositeBlock applies to a right by checking
* whether the original blocks apply to that right. Each block can report
* true (applies), false (does not apply) or null (unsure). Then:
* - If any original blocks apply, this block applies
* - If no original blocks apply but any are unsure, this block is unsure
* - If all blocks do not apply, this block does not apply
*/
public function appliesToRight( $right ) {
$isUnsure = false;
foreach ( $this->originalBlocks as $block ) {
$appliesToRight = $block->appliesToRight( $right );
if ( $appliesToRight ) {
return true;
} elseif ( $appliesToRight === null ) {
$isUnsure = true;
}
}
return $isUnsure ? null : false;
}
/**
* @inheritDoc
*/
public function appliesToUsertalk( ?Title $usertalk = null ) {
return $this->methodReturnsValue( __FUNCTION__, true, $usertalk );
}
/**
* @inheritDoc
*/
public function appliesToTitle( Title $title ) {
return $this->methodReturnsValue( __FUNCTION__, true, $title );
}
/**
* @inheritDoc
*/
public function appliesToNamespace( $ns ) {
return $this->methodReturnsValue( __FUNCTION__, true, $ns );
}
/**
* @inheritDoc
*/
public function appliesToPage( $pageId ) {
return $this->methodReturnsValue( __FUNCTION__, true, $pageId );
}
/**
* @inheritDoc
*/
public function appliesToPasswordReset() {
return $this->methodReturnsValue( __FUNCTION__, true );
}
/**
* @inheritDoc
*/
public function getBy( $wikiId = self::LOCAL ): int {
$this->assertWiki( $wikiId );
return 0;
}
/**
* @inheritDoc
*/
public function getByName() {
return '';
}
/**
* @inheritDoc
*/
public function getBlocker(): ?UserIdentity {
return null;
}
}