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81 lines
1.9 KiB
PHP
81 lines
1.9 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OCA\DAV\Connector\Sabre;
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use OCA\DAV\Connector\Sabre\Exception\FileLocked;
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use OCP\Lock\ILockingProvider;
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use OCP\Lock\LockedException;
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use Sabre\DAV\Exception\NotFound;
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use Sabre\DAV\ServerPlugin;
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use Sabre\HTTP\RequestInterface;
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class LockPlugin extends ServerPlugin {
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/**
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* Reference to main server object
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*
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* @var \Sabre\DAV\Server
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*/
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private $server;
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/**
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* State of the lock
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*
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* @var bool
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*/
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private $isLocked;
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/**
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* {@inheritdoc}
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*/
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public function initialize(\Sabre\DAV\Server $server) {
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$this->server = $server;
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$this->server->on('beforeMethod:*', [$this, 'getLock'], 50);
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$this->server->on('afterMethod:*', [$this, 'releaseLock'], 50);
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$this->isLocked = false;
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}
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public function getLock(RequestInterface $request) {
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// we can't listen on 'beforeMethod:PUT' due to order of operations with setting up the tree
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// so instead we limit ourselves to the PUT method manually
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if ($request->getMethod() !== 'PUT') {
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return;
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}
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try {
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$node = $this->server->tree->getNodeForPath($request->getPath());
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} catch (NotFound $e) {
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return;
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}
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if ($node instanceof Node) {
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try {
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$node->acquireLock(ILockingProvider::LOCK_SHARED);
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} catch (LockedException $e) {
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throw new FileLocked($e->getMessage(), $e->getCode(), $e);
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}
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$this->isLocked = true;
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}
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}
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public function releaseLock(RequestInterface $request) {
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// don't try to release the lock if we never locked one
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if ($this->isLocked === false) {
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return;
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}
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if ($request->getMethod() !== 'PUT') {
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return;
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}
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try {
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$node = $this->server->tree->getNodeForPath($request->getPath());
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} catch (NotFound $e) {
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return;
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}
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if ($node instanceof Node) {
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$node->releaseLock(ILockingProvider::LOCK_SHARED);
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$this->isLocked = false;
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}
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}
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}
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