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<?php |
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use GuzzleHttp\Psr7\AppendStream; |
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/** |
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* @author Bart Visscher <[email protected]> |
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* @author Felix Moeller <[email protected]> |
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* @author Jörn Friedrich Dreyer <[email protected]> |
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* @author Morris Jobke <[email protected]> |
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* @author Robin Appelman <[email protected]> |
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* @author Roeland Jago Douma <[email protected]> |
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* @author Thomas Müller <[email protected]> |
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* @author Thomas Tanghus <[email protected]> |
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* @author Vincent Petry <[email protected]> |
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* |
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* @copyright Copyright (c) 2018, ownCloud GmbH |
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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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class OC_FileChunking { |
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protected $info; |
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protected $cache; |
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/** |
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* TTL of chunks |
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* |
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* @var int |
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*/ |
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protected $ttl; |
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public static function isWebdavChunk() { |
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if (isset($_SERVER['HTTP_OC_CHUNKED'])) { |
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return true; |
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} |
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return false; |
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} |
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public static function decodeName($name) { |
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\preg_match('/(?P<name>.*)-chunking-(?P<transferid>\d+)-(?P<chunkcount>\d+)-(?P<index>\d+)/', $name, $matches); |
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return $matches; |
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} |
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/** |
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* @param string[] $info |
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*/ |
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public function __construct($info) { |
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$this->info = $info; |
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$this->ttl = \OC::$server->getConfig()->getSystemValue('cache_chunk_gc_ttl', 86400); |
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} |
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public function getPrefix() { |
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$name = $this->info['name']; |
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$transferid = $this->info['transferid']; |
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return $name.'-chunking-'.$transferid.'-'; |
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} |
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protected function getCache() { |
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if (!isset($this->cache)) { |
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$this->cache = new \OC\Cache\File(); |
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} |
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return $this->cache; |
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} |
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/** |
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* Stores the given $data under the given $key - the number of stored bytes is returned |
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* |
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* @param string $index |
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* @param resource $data |
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* @return int |
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*/ |
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public function store($index, $data) { |
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$cache = $this->getCache(); |
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$name = $this->getPrefix().$index; |
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$cache->set($name, $data, $this->ttl); |
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return $cache->size($name); |
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} |
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public function isComplete() { |
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$prefix = $this->getPrefix(); |
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$cache = $this->getCache(); |
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$chunkcount = (int)$this->info['chunkcount']; |
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for ($i=($chunkcount-1); $i >= 0; $i--) { |
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if (!$cache->hasKey($prefix.$i)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* @return array |
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* @throws \OC\ForbiddenException |
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*/ |
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public function getAllChunks() { |
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$cache = $this->getCache(); |
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$prefix = $this->getPrefix(); |
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$chunks = []; |
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for ($i = 0; $i < $this->info['chunkcount']; $i++) { |
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$chunk = $cache->get($prefix.$i); |
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$chunks[] = \GuzzleHttp\Psr7\stream_for($chunk); |
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// remove after reading to directly save space |
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$cache->remove($prefix.$i); |
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// let php release the memory to work around memory exhausted error with php 5.6 |
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$chunk = null; |
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} |
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return $chunks; |
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} |
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/** |
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* Returns the size of the chunks already present |
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* @return integer size in bytes |
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*/ |
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public function getCurrentSize() { |
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$cache = $this->getCache(); |
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$prefix = $this->getPrefix(); |
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$total = 0; |
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for ($i = 0; $i < $this->info['chunkcount']; $i++) { |
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$total += $cache->size($prefix.$i); |
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} |
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return $total; |
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} |
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/** |
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* Removes all chunks which belong to this transmission |
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*/ |
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public function cleanup() { |
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$cache = $this->getCache(); |
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$prefix = $this->getPrefix(); |
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for ($i=0; $i < $this->info['chunkcount']; $i++) { |
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$cache->remove($prefix.$i); |
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} |
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} |
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/** |
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* Removes one specific chunk |
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* @param string $index |
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*/ |
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public function remove($index) { |
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$cache = $this->getCache(); |
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$prefix = $this->getPrefix(); |
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$cache->remove($prefix.$index); |
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} |
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/** |
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* Assembles the chunks into the file specified by the path. |
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* Also triggers the relevant hooks and proxies. |
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* |
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* @param \OC\Files\Storage\Storage $storage storage |
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* @param string $path target path relative to the storage |
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* @return bool true on success or false if file could not be created |
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* |
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* @throws \OC\ServerNotAvailableException |
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*/ |
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public function file_assemble($storage, $path) { |
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// use file_put_contents as method because that best matches what this function does |
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if (\OC\Files\Filesystem::isValidPath($path)) { |
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$chunks = $this->getAllChunks(); |
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$written = $storage->writeFile($path, $composed = new AppendStream($chunks)); |
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return $written > 0; |
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} |
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return false; |
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} |
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} |
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owncloud /
core
