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<?php declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2020 Robin Appelman <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program 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 as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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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 |
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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\Stream; |
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use Icewind\Streams\Wrapper; |
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class HashWrapper extends Wrapper { |
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protected $callback; |
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protected $hash; |
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public static function wrap($source, string $algo, callable $callback) { |
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$hash = hash_init($algo); |
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$context = stream_context_create([ |
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'hash' => [ |
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'source' => $source, |
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'callback' => $callback, |
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'hash' => $hash, |
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], |
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]); |
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return Wrapper::wrapSource($source, $context, 'hash', self::class); |
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} |
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protected function open() { |
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$context = $this->loadContext('hash'); |
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$this->callback = $context['callback']; |
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$this->hash = $context['hash']; |
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return true; |
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} |
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public function dir_opendir($path, $options) { |
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return $this->open(); |
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} |
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public function stream_open($path, $mode, $options, &$opened_path) { |
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return $this->open(); |
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} |
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public function stream_read($count) { |
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$result = parent::stream_read($count); |
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hash_update($this->hash, $result); |
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return $result; |
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} |
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public function stream_close() { |
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if (is_callable($this->callback)) { |
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call_user_func($this->callback, hash_final($this->hash)); |
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// prevent further calls by potential PHP 7 GC ghosts |
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$this->callback = null; |
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} |
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return parent::stream_close(); |
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} |
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} |
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nextcloud /
server
