nextcloud/apps/files_sharing/lib/propagation/changewatcher.php

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<?php
/**
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* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\Files_Sharing\Propagation;
use OC\Files\Cache\ChangePropagator;
use OC\Files\Filesystem;
use OC\Files\View;
use OCA\Files_Sharing\SharedMount;
/**
* Watch for changes made in a shared mount and propagate the changes to the share owner
*/
class ChangeWatcher {
/**
* The user view for the logged in user
*
* @var \OC\Files\View
*/
private $baseView;
/**
* @var RecipientPropagator
*/
private $recipientPropagator;
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/**
* @param \OC\Files\View $baseView the view for the logged in user
* @param RecipientPropagator $recipientPropagator
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*/
public function __construct(View $baseView, RecipientPropagator $recipientPropagator) {
$this->baseView = $baseView;
$this->recipientPropagator = $recipientPropagator;
}
public function writeHook($params) {
$path = $params['path'];
$fullPath = $this->baseView->getAbsolutePath($path);
$mount = $this->baseView->getMount($path);
if ($mount instanceof SharedMount) {
$this->propagateForOwner($mount->getShare(), $mount->getInternalPath($fullPath), $mount->getOwnerPropagator());
}
$info = $this->baseView->getFileInfo($path);
if ($info) {
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// trigger propagation if the subject of the write hook is shared.
// if a parent folder of $path is shared the propagation will be triggered from the change propagator hooks
$this->recipientPropagator->propagateById($info->getId());
}
}
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public function renameHook($params) {
$path1 = $params['oldpath'];
$path2 = $params['newpath'];
$fullPath1 = $this->baseView->getAbsolutePath($path1);
$fullPath2 = $this->baseView->getAbsolutePath($path2);
$mount1 = $this->baseView->getMount($path1);
$mount2 = $this->baseView->getMount($path2);
if ($mount1 instanceof SharedMount and $mount1->getInternalPath($fullPath1) !== '') {
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$this->propagateForOwner($mount1->getShare(), $mount1->getInternalPath($fullPath1), $mount1->getOwnerPropagator());
}
if ($mount1 !== $mount2 and $mount2 instanceof SharedMount and $mount2->getInternalPath($fullPath2) !== '') {
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$this->propagateForOwner($mount2->getShare(), $mount2->getInternalPath($fullPath2), $mount2->getOwnerPropagator());
}
}
/**
* @param array $share
* @param string $internalPath
* @param \OC\Files\Cache\ChangePropagator $propagator
*/
private function propagateForOwner($share, $internalPath, ChangePropagator $propagator) {
// note that we have already set up the filesystem for the owner when mounting the share
$view = new View('/' . $share['uid_owner'] . '/files');
$shareRootPath = $view->getPath($share['item_source']);
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if (!is_null($shareRootPath)) {
$path = $shareRootPath . '/' . $internalPath;
$path = Filesystem::normalizePath($path);
$propagator->addChange($path);
$propagator->propagateChanges();
}
}
}