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SelfRedirectConstraint.php
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SelfRedirectConstraint.php
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<?php
/**
* 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\EditPage\Constraint;
use MediaWiki\Content\Content;
use MediaWiki\Linker\LinkTarget;
use StatusValue;
/**
* Verify the page does not redirect to itself unless
* - the user is okay with a self redirect, or
* - the page already redirected to itself before the edit
*
* @since 1.36
* @internal
*/
class SelfRedirectConstraint implements IEditConstraint {
private bool $allowSelfRedirect;
private Content $newContent;
private Content $originalContent;
private LinkTarget $title;
private string $result;
/**
* @param bool $allowSelfRedirect
* @param Content $newContent
* @param Content $originalContent
* @param LinkTarget $title
*/
public function __construct(
bool $allowSelfRedirect,
Content $newContent,
Content $originalContent,
LinkTarget $title
) {
$this->allowSelfRedirect = $allowSelfRedirect;
$this->newContent = $newContent;
$this->originalContent = $originalContent;
$this->title = $title;
}
public function checkConstraint(): string {
if ( !$this->allowSelfRedirect
&& $this->newContent->isRedirect()
&& $this->newContent->getRedirectTarget()->equals( $this->title )
) {
// T29683 If the page already redirects to itself, don't warn.
$currentTarget = $this->originalContent->getRedirectTarget();
if ( !$currentTarget || !$currentTarget->equals( $this->title ) ) {
$this->result = self::CONSTRAINT_FAILED;
return self::CONSTRAINT_FAILED;
}
}
$this->result = self::CONSTRAINT_PASSED;
return self::CONSTRAINT_PASSED;
}
public function getLegacyStatus(): StatusValue {
$statusValue = StatusValue::newGood();
if ( $this->result === self::CONSTRAINT_FAILED ) {
$statusValue->fatal( 'selfredirect' );
$statusValue->value = self::AS_SELF_REDIRECT;
}
return $statusValue;
}
}

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SelfRedirectConstraint.php (2 KB)

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