150 lines
3.9 KiB
PHP
150 lines
3.9 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
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*
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* @author Robin Appelman <robin@icewind.nl>
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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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