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<?php |
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/** |
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* @copyright Copyright (c) 2017 Robin Appelman <[email protected]> |
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* |
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* @author 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 OCA\Files_External\Lib\Notify; |
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use OC\Files\Notify\Change; |
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use OC\Files\Notify\RenameChange; |
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use OCP\Files\Notify\IChange; |
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use OCP\Files\Notify\INotifyHandler; |
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class SMBNotifyHandler implements INotifyHandler { |
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/** |
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* @var \Icewind\SMB\INotifyHandler |
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*/ |
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private $shareNotifyHandler; |
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/** |
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* @var string |
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*/ |
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private $root; |
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private $oldRenamePath = null; |
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/** |
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* SMBNotifyHandler constructor. |
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* |
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* @param \Icewind\SMB\INotifyHandler $shareNotifyHandler |
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* @param string $root |
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*/ |
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public function __construct(\Icewind\SMB\INotifyHandler $shareNotifyHandler, $root) { |
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$this->shareNotifyHandler = $shareNotifyHandler; |
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$this->root = $root; |
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} |
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private function relativePath($fullPath) { |
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if ($fullPath === $this->root) { |
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return ''; |
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} else if (substr($fullPath, 0, strlen($this->root)) === $this->root) { |
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return substr($fullPath, strlen($this->root)); |
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} else { |
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return null; |
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} |
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} |
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public function listen(callable $callback) { |
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$oldRenamePath = null; |
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$this->shareNotifyHandler->listen(function (\Icewind\SMB\Change $shareChange) use ($callback) { |
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$change = $this->mapChange($shareChange); |
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if (!is_null($change)) { |
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return $callback($change); |
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} else { |
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return true; |
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} |
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}); |
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} |
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/** |
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* Get all changes detected since the start of the notify process or the last call to getChanges |
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* |
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* @return IChange[] |
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*/ |
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public function getChanges() { |
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$shareChanges = $this->shareNotifyHandler->getChanges(); |
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$changes = []; |
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foreach ($shareChanges as $shareChange) { |
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$change = $this->mapChange($shareChange); |
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if ($change) { |
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$changes[] = $change; |
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} |
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} |
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return $changes; |
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} |
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/** |
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* Stop listening for changes |
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* |
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* Note that any pending changes will be discarded |
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*/ |
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public function stop() { |
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$this->shareNotifyHandler->stop(); |
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} |
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/** |
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* @param \Icewind\SMB\Change $change |
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* @return IChange|null |
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*/ |
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private function mapChange(\Icewind\SMB\Change $change) { |
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$path = $this->relativePath($change->getPath()); |
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if (is_null($path)) { |
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return null; |
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} |
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if ($change->getCode() === \Icewind\SMB\INotifyHandler::NOTIFY_RENAMED_OLD) { |
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$this->oldRenamePath = $path; |
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return null; |
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} |
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$type = $this->mapNotifyType($change->getCode()); |
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if (is_null($type)) { |
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return null; |
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} |
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if ($type === IChange::RENAMED) { |
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if (!is_null($this->oldRenamePath)) { |
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$result = new RenameChange($type, $this->oldRenamePath, $path); |
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$this->oldRenamePath = null; |
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} else { |
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$result = null; |
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} |
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} else { |
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$result = new Change($type, $path); |
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} |
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return $result; |
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} |
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private function mapNotifyType($smbType) { |
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switch ($smbType) { |
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case \Icewind\SMB\INotifyHandler::NOTIFY_ADDED: |
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return IChange::ADDED; |
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case \Icewind\SMB\INotifyHandler::NOTIFY_REMOVED: |
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return IChange::REMOVED; |
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case \Icewind\SMB\INotifyHandler::NOTIFY_MODIFIED: |
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case \Icewind\SMB\INotifyHandler::NOTIFY_ADDED_STREAM: |
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case \Icewind\SMB\INotifyHandler::NOTIFY_MODIFIED_STREAM: |
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case \Icewind\SMB\INotifyHandler::NOTIFY_REMOVED_STREAM: |
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return IChange::MODIFIED; |
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case \Icewind\SMB\INotifyHandler::NOTIFY_RENAMED_NEW: |
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return IChange::RENAMED; |
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default: |
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return null; |
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} |
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} |
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} |
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nextcloud /
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