File: EditRightConstraint.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\Permissions\PermissionManager;
use MediaWiki\Title\Title;
use MediaWiki\User\User;
use StatusValue;

/**
 * Verify user permissions:
 *    Must have edit rights
 *
 * @since 1.36
 * @internal
 * @author DannyS712
 */
class EditRightConstraint implements IEditConstraint {

	private User $performer;
	private PermissionManager $permManager;
	private Title $title;
	private string $result;
	private bool $new;

	/**
	 * @param User $performer
	 * @param PermissionManager $permManager
	 * @param Title $title
	 * @param bool $new
	 */
	public function __construct(
		User $performer,
		PermissionManager $permManager,
		Title $title,
		bool $new
	) {
		$this->performer = $performer;
		$this->permManager = $permManager;
		$this->title = $title;
		$this->new = $new;
	}

	public function checkConstraint(): string {
		if ( $this->new ) {
			// Check isn't simple enough to just repeat when getting the status
			if ( !$this->performer->authorizeWrite( 'create', $this->title ) ) {
				$this->result = (string)self::AS_NO_CREATE_PERMISSION;
				return self::CONSTRAINT_FAILED;
			}
		}

		// Check isn't simple enough to just repeat when getting the status
		// Prior to 1.41 this checked if the user had edit rights in general
		// instead of for the specific page in question.
		if ( !$this->permManager->userCan(
			'edit',
			$this->performer,
			$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 ( $this->result === self::CONSTRAINT_FAILED ) {
			if ( !$this->performer->isRegistered() ) {
				$statusValue->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
			} else {
				$statusValue->fatal( 'readonlytext' );
				$statusValue->value = self::AS_READ_ONLY_PAGE_LOGGED;
			}
		} elseif ( $this->result === (string)self::AS_NO_CREATE_PERMISSION ) {
			$statusValue->fatal( 'nocreatetext' );
			$statusValue->value = self::AS_NO_CREATE_PERMISSION;
		}

		return $statusValue;
	}

}