127 lines
3.9 KiB
PHP
127 lines
3.9 KiB
PHP
<?php
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/**
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_Sharing\Propagation;
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use OC\Files\Filesystem;
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use OC\Files\View;
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use OCP\IConfig;
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use OCP\IUserSession;
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/**
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* Keep track of all change and share propagators by owner
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*/
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class PropagationManager {
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/**
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* @var \OCP\IUserSession
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*/
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private $userSession;
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/**
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* @var \OCP\IConfig
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*/
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private $config;
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/**
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* Change propagators for share owner
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*
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* @var \OC\Files\Cache\ChangePropagator[]
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*/
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private $changePropagators = [];
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/**
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* Recipient propagators
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*
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* @var \OCA\Files_Sharing\Propagation\RecipientPropagator[]
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*/
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private $sharePropagators = [];
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public function __construct(IUserSession $userSession, IConfig $config) {
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$this->userSession = $userSession;
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$this->config = $config;
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}
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/**
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* @param string $user
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* @return \OC\Files\Cache\ChangePropagator
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*/
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public function getChangePropagator($user) {
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$activeUser = $this->userSession->getUser();
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// for the local user we want to propagator from the active view, not any cached one
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if ($activeUser && $activeUser->getUID() === $user && Filesystem::getView() instanceof View) {
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// it's important that we take the existing propagator here to make sure we can listen to external changes
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$this->changePropagators[$user] = Filesystem::getView()->getUpdater()->getPropagator();
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}
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if (isset($this->changePropagators[$user])) {
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return $this->changePropagators[$user];
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}
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$view = new View('/' . $user . '/files');
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$this->changePropagators[$user] = $view->getUpdater()->getPropagator();
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return $this->changePropagators[$user];
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}
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/**
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* @param string $user
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* @return \OCA\Files_Sharing\Propagation\RecipientPropagator
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*/
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public function getSharePropagator($user) {
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if (isset($this->sharePropagators[$user])) {
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return $this->sharePropagators[$user];
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}
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$this->sharePropagators[$user] = new RecipientPropagator($user, $this->getChangePropagator($user), $this->config, $this);
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return $this->sharePropagators[$user];
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}
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/**
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* Attach the recipient propagator for $user to the change propagator of a share owner to mark shares as dirty when the owner makes a change to a share
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*
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* @param string $shareOwner
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* @param string $user
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*/
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public function listenToOwnerChanges($shareOwner, $user) {
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$sharePropagator = $this->getSharePropagator($user);
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$ownerPropagator = $this->getChangePropagator($shareOwner);
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$sharePropagator->attachToPropagator($ownerPropagator, $shareOwner);
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}
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/**
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* To be called from setupFS trough a hook
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*
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* Sets up listening to changes made to shares owned by the current user
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*/
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public function globalSetup() {
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$user = $this->userSession->getUser();
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if (!$user) {
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return;
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}
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$recipientPropagator = $this->getSharePropagator($user->getUID());
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$watcher = new ChangeWatcher(Filesystem::getView(), $recipientPropagator);
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// for marking shares owned by the active user as dirty when a file inside them changes
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$this->listenToOwnerChanges($user->getUID(), $user->getUID());
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\OC_Hook::connect('OC_Filesystem', 'post_write', $watcher, 'writeHook');
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\OC_Hook::connect('OC_Filesystem', 'post_delete', $watcher, 'writeHook');
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\OC_Hook::connect('OC_Filesystem', 'post_rename', $watcher, 'renameHook');
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}
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}
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