398 lines
10 KiB
PHP
398 lines
10 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Ari Selseng <ari@selseng.net>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Daniel Jagszent <daniel@jagszent.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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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 OC\Files\Cache\Wrapper;
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use OC\Files\Cache\Cache;
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use OC\Files\Search\SearchBinaryOperator;
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use OC\Files\Search\SearchComparison;
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use OC\Files\Search\SearchQuery;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\Files\Cache\ICacheEntry;
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use OCP\Files\Search\ISearchBinaryOperator;
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use OCP\Files\Search\ISearchComparison;
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use OCP\Files\Search\ISearchQuery;
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/**
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* Jail to a subdirectory of the wrapped cache
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*/
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class CacheJail extends CacheWrapper {
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/**
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* @var string
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*/
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protected $root;
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/**
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* @param \OCP\Files\Cache\ICache $cache
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* @param string $root
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*/
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public function __construct($cache, $root) {
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parent::__construct($cache);
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$this->root = $root;
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$this->connection = \OC::$server->getDatabaseConnection();
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$this->mimetypeLoader = \OC::$server->getMimeTypeLoader();
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}
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protected function getRoot() {
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return $this->root;
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}
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protected function getSourcePath($path) {
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if ($path === '') {
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return $this->getRoot();
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} else {
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return $this->getRoot() . '/' . ltrim($path, '/');
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}
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}
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/**
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* @param string $path
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* @return null|string the jailed path or null if the path is outside the jail
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*/
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protected function getJailedPath($path) {
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if ($this->getRoot() === '') {
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return $path;
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}
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$rootLength = strlen($this->getRoot()) + 1;
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if ($path === $this->getRoot()) {
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return '';
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} elseif (substr($path, 0, $rootLength) === $this->getRoot() . '/') {
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return substr($path, $rootLength);
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} else {
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return null;
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}
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}
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/**
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* @param ICacheEntry|array $entry
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* @return array
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*/
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protected function formatCacheEntry($entry) {
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if (isset($entry['path'])) {
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$entry['path'] = $this->getJailedPath($entry['path']);
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}
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return $entry;
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}
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protected function filterCacheEntry($entry) {
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$rootLength = strlen($this->getRoot()) + 1;
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return $rootLength === 1 || ($entry['path'] === $this->getRoot()) || (substr($entry['path'], 0, $rootLength) === $this->getRoot() . '/');
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}
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/**
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* get the stored metadata of a file or folder
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*
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* @param string /int $file
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* @return ICacheEntry|false
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*/
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public function get($file) {
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if (is_string($file) or $file == '') {
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$file = $this->getSourcePath($file);
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}
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return parent::get($file);
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}
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/**
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* insert meta data for a new file or folder
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*
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* @param string $file
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* @param array $data
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*
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* @return int file id
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* @throws \RuntimeException
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*/
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public function insert($file, array $data) {
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return $this->getCache()->insert($this->getSourcePath($file), $data);
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}
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/**
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* update the metadata in the cache
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*
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* @param int $id
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* @param array $data
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*/
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public function update($id, array $data) {
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$this->getCache()->update($id, $data);
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}
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/**
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* get the file id for a file
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*
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* @param string $file
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* @return int
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*/
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public function getId($file) {
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return $this->getCache()->getId($this->getSourcePath($file));
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}
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/**
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* get the id of the parent folder of a file
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*
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* @param string $file
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* @return int
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*/
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public function getParentId($file) {
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return $this->getCache()->getParentId($this->getSourcePath($file));
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}
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/**
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* check if a file is available in the cache
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*
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* @param string $file
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* @return bool
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*/
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public function inCache($file) {
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return $this->getCache()->inCache($this->getSourcePath($file));
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}
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/**
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* remove a file or folder from the cache
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*
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* @param string $file
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*/
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public function remove($file) {
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$this->getCache()->remove($this->getSourcePath($file));
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}
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/**
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* Move a file or folder in the cache
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*
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* @param string $source
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* @param string $target
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*/
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public function move($source, $target) {
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$this->getCache()->move($this->getSourcePath($source), $this->getSourcePath($target));
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}
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/**
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* Get the storage id and path needed for a move
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*
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* @param string $path
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* @return array [$storageId, $internalPath]
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*/
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protected function getMoveInfo($path) {
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return [$this->getNumericStorageId(), $this->getSourcePath($path)];
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}
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/**
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* remove all entries for files that are stored on the storage from the cache
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*/
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public function clear() {
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$this->getCache()->remove($this->getRoot());
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}
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/**
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* @param string $file
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*
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* @return int Cache::NOT_FOUND, Cache::PARTIAL, Cache::SHALLOW or Cache::COMPLETE
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*/
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public function getStatus($file) {
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return $this->getCache()->getStatus($this->getSourcePath($file));
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}
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private function formatSearchResults($results) {
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$results = array_filter($results, [$this, 'filterCacheEntry']);
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$results = array_values($results);
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return array_map([$this, 'formatCacheEntry'], $results);
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}
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/**
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* search for files matching $pattern
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*
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* @param string $pattern
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* @return array an array of file data
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*/
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public function search($pattern) {
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// normalize pattern
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$pattern = $this->normalize($pattern);
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if ($pattern === '%%') {
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return [];
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}
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$query = $this->getQueryBuilder();
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$query->selectFileCache()
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->whereStorageId()
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->andWhere($query->expr()->orX(
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$query->expr()->like('path', $query->createNamedParameter($this->getRoot() . '/%')),
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$query->expr()->eq('path_hash', $query->createNamedParameter(md5($this->getRoot()))),
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))
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->andWhere($query->expr()->iLike('name', $query->createNamedParameter($pattern)));
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$result = $query->execute();
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$files = $result->fetchAll();
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$result->closeCursor();
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$results = array_map(function (array $data) {
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return self::cacheEntryFromData($data, $this->mimetypeLoader);
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}, $files);
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return $this->formatSearchResults($results);
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}
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/**
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* search for files by mimetype
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*
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* @param string $mimetype
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* @return array
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*/
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public function searchByMime($mimetype) {
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$mimeId = $this->mimetypeLoader->getId($mimetype);
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$query = $this->getQueryBuilder();
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$query->selectFileCache()
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->whereStorageId()
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->andWhere($query->expr()->orX(
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$query->expr()->like('path', $query->createNamedParameter($this->getRoot() . '/%')),
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$query->expr()->eq('path_hash', $query->createNamedParameter(md5($this->getRoot()))),
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));
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if (strpos($mimetype, '/')) {
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$query->andWhere($query->expr()->eq('mimetype', $query->createNamedParameter($mimeId, IQueryBuilder::PARAM_INT)));
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} else {
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$query->andWhere($query->expr()->eq('mimepart', $query->createNamedParameter($mimeId, IQueryBuilder::PARAM_INT)));
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}
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$result = $query->execute();
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$files = $result->fetchAll();
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$result->closeCursor();
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$results = array_map(function (array $data) {
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return self::cacheEntryFromData($data, $this->mimetypeLoader);
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}, $files);
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return $this->formatSearchResults($results);
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}
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public function searchQuery(ISearchQuery $query) {
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$prefixFilter = new SearchComparison(
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ISearchComparison::COMPARE_LIKE,
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'path',
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$this->getRoot() . '/%'
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);
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$rootFilter = new SearchComparison(
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ISearchComparison::COMPARE_EQUAL,
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'path',
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$this->getRoot()
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);
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$operation = new SearchBinaryOperator(
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ISearchBinaryOperator::OPERATOR_AND,
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[new SearchBinaryOperator(ISearchBinaryOperator::OPERATOR_OR, [$prefixFilter, $rootFilter]) , $query->getSearchOperation()]
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);
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$simpleQuery = new SearchQuery($operation, 0, 0, $query->getOrder(), $query->getUser());
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$results = $this->getCache()->searchQuery($simpleQuery);
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$results = $this->formatSearchResults($results);
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$limit = $query->getLimit() === 0 ? null : $query->getLimit();
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$results = array_slice($results, $query->getOffset(), $limit);
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return $results;
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}
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/**
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* update the folder size and the size of all parent folders
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*
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* @param string|boolean $path
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* @param array $data (optional) meta data of the folder
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*/
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public function correctFolderSize($path, $data = null, $isBackgroundSize = false) {
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if ($this->getCache() instanceof Cache) {
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$this->getCache()->correctFolderSize($this->getSourcePath($path), $data, $isBackgroundSize);
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}
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}
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/**
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* get the size of a folder and set it in the cache
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*
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* @param string $path
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* @param array $entry (optional) meta data of the folder
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* @return int
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*/
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public function calculateFolderSize($path, $entry = null) {
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if ($this->getCache() instanceof Cache) {
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return $this->getCache()->calculateFolderSize($this->getSourcePath($path), $entry);
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} else {
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return 0;
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}
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}
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/**
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* get all file ids on the files on the storage
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*
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* @return int[]
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*/
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public function getAll() {
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// not supported
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return [];
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}
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/**
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* find a folder in the cache which has not been fully scanned
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*
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* If multiply incomplete folders are in the cache, the one with the highest id will be returned,
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* use the one with the highest id gives the best result with the background scanner, since that is most
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* likely the folder where we stopped scanning previously
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*
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* @return string|bool the path of the folder or false when no folder matched
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*/
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public function getIncomplete() {
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// not supported
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return false;
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}
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/**
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* get the path of a file on this storage by it's id
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*
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* @param int $id
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* @return string|null
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*/
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public function getPathById($id) {
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$path = $this->getCache()->getPathById($id);
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if ($path === null) {
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return null;
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}
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return $this->getJailedPath($path);
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}
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/**
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* Move a file or folder in the cache
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*
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* Note that this should make sure the entries are removed from the source cache
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*
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* @param \OCP\Files\Cache\ICache $sourceCache
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* @param string $sourcePath
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* @param string $targetPath
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*/
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public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
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if ($sourceCache === $this) {
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return $this->move($sourcePath, $targetPath);
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}
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return $this->getCache()->moveFromCache($sourceCache, $sourcePath, $this->getSourcePath($targetPath));
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}
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}
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