803 lines
22 KiB
PHP
803 lines
22 KiB
PHP
<?php
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/**
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Carlos Cerrillo <ccerrillo@gmail.com>
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* @author Felix Moeller <mail@felixmoeller.de>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Lukas Reschke <lukas@owncloud.com>
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* @author Michael Gapczynski <GapczynskiM@gmail.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Philipp Kapfer <philipp.kapfer@gmx.at>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Scrutinizer Auto-Fixer <auto-fixer@scrutinizer-ci.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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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\Storage;
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use Exception;
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use OC\Files\Filesystem;
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use OC\Files\Stream\Close;
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use Icewind\Streams\IteratorDirectory;
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use OC\MemCache\ArrayCache;
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use OCP\AppFramework\Http;
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use OCP\Constants;
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use OCP\Files;
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use OCP\Files\FileInfo;
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use OCP\Files\StorageInvalidException;
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use OCP\Files\StorageNotAvailableException;
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use OCP\Util;
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use Sabre\DAV\Client;
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use Sabre\DAV\Exception\NotFound;
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use Sabre\DAV\Xml\Property\ResourceType;
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use Sabre\HTTP\ClientException;
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use Sabre\HTTP\ClientHttpException;
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/**
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* Class DAV
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*
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* @package OC\Files\Storage
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*/
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class DAV extends Common {
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/** @var string */
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protected $password;
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/** @var string */
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protected $user;
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/** @var string */
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protected $host;
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/** @var bool */
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protected $secure;
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/** @var string */
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protected $root;
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/** @var string */
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protected $certPath;
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/** @var bool */
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protected $ready;
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/** @var Client */
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private $client;
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/** @var ArrayCache */
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private $statCache;
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/** @var array */
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private static $tempFiles = [];
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/** @var \OCP\Http\Client\IClientService */
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private $httpClientService;
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/**
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* @param array $params
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* @throws \Exception
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*/
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public function __construct($params) {
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$this->statCache = new ArrayCache();
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$this->httpClientService = \OC::$server->getHTTPClientService();
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if (isset($params['host']) && isset($params['user']) && isset($params['password'])) {
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$host = $params['host'];
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//remove leading http[s], will be generated in createBaseUri()
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if (substr($host, 0, 8) == "https://") $host = substr($host, 8);
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else if (substr($host, 0, 7) == "http://") $host = substr($host, 7);
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$this->host = $host;
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$this->user = $params['user'];
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$this->password = $params['password'];
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if (isset($params['secure'])) {
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if (is_string($params['secure'])) {
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$this->secure = ($params['secure'] === 'true');
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} else {
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$this->secure = (bool)$params['secure'];
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}
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} else {
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$this->secure = false;
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}
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if ($this->secure === true) {
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// inject mock for testing
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$certPath = \OC_User::getHome(\OC_User::getUser()) . '/files_external/rootcerts.crt';
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if (file_exists($certPath)) {
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$this->certPath = $certPath;
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}
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}
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$this->root = isset($params['root']) ? $params['root'] : '/';
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if (!$this->root || $this->root[0] != '/') {
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$this->root = '/' . $this->root;
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}
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if (substr($this->root, -1, 1) != '/') {
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$this->root .= '/';
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}
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} else {
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throw new \Exception('Invalid webdav storage configuration');
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}
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}
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private function init() {
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if ($this->ready) {
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return;
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}
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$this->ready = true;
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$settings = array(
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'baseUri' => $this->createBaseUri(),
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'userName' => $this->user,
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'password' => $this->password,
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);
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$this->client = new Client($settings);
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$this->client->setThrowExceptions(true);
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if ($this->secure === true && $this->certPath) {
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$this->client->addCurlSetting(CURLOPT_CAINFO, $this->certPath);
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}
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}
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/**
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* Clear the stat cache
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*/
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public function clearStatCache() {
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$this->statCache->clear();
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}
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/** {@inheritdoc} */
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public function getId() {
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return 'webdav::' . $this->user . '@' . $this->host . '/' . $this->root;
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}
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/** {@inheritdoc} */
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public function createBaseUri() {
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$baseUri = 'http';
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if ($this->secure) {
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$baseUri .= 's';
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}
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$baseUri .= '://' . $this->host . $this->root;
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return $baseUri;
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}
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/** {@inheritdoc} */
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public function mkdir($path) {
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$this->init();
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$path = $this->cleanPath($path);
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$result = $this->simpleResponse('MKCOL', $path, null, 201);
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if ($result) {
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$this->statCache->set($path, true);
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}
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return $result;
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}
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/** {@inheritdoc} */
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public function rmdir($path) {
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$this->init();
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$path = $this->cleanPath($path);
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// FIXME: some WebDAV impl return 403 when trying to DELETE
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// a non-empty folder
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$result = $this->simpleResponse('DELETE', $path . '/', null, 204);
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$this->statCache->clear($path . '/');
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$this->statCache->remove($path);
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return $result;
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}
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/** {@inheritdoc} */
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public function opendir($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind(
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$this->encodePath($path),
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array(),
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1
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);
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$id = md5('webdav' . $this->root . $path);
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$content = array();
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$files = array_keys($response);
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array_shift($files); //the first entry is the current directory
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if (!$this->statCache->hasKey($path)) {
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$this->statCache->set($path, true);
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}
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foreach ($files as $file) {
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$file = urldecode($file);
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// do not store the real entry, we might not have all properties
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if (!$this->statCache->hasKey($path)) {
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$this->statCache->set($file, true);
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}
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$file = basename($file);
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$content[] = $file;
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}
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return IteratorDirectory::wrap($content);
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} catch (ClientHttpException $e) {
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if ($e->getHttpStatus() === 404) {
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$this->statCache->clear($path . '/');
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$this->statCache->set($path, false);
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return false;
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}
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$this->convertException($e, $path);
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} catch (\Exception $e) {
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$this->convertException($e, $path);
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}
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return false;
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}
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/**
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* Propfind call with cache handling.
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*
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* First checks if information is cached.
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* If not, request it from the server then store to cache.
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*
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* @param string $path path to propfind
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*
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* @return array propfind response
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*
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* @throws NotFound
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*/
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private function propfind($path) {
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$path = $this->cleanPath($path);
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$cachedResponse = $this->statCache->get($path);
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if ($cachedResponse === false) {
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// we know it didn't exist
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throw new NotFound();
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}
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// we either don't know it, or we know it exists but need more details
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if (is_null($cachedResponse) || $cachedResponse === true) {
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$this->init();
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try {
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$response = $this->client->propfind(
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$this->encodePath($path),
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array(
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'{DAV:}getlastmodified',
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'{DAV:}getcontentlength',
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'{DAV:}getcontenttype',
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'{http://owncloud.org/ns}permissions',
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'{DAV:}resourcetype',
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'{DAV:}getetag',
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)
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);
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$this->statCache->set($path, $response);
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} catch (NotFound $e) {
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// remember that this path did not exist
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$this->statCache->clear($path . '/');
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$this->statCache->set($path, false);
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throw $e;
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}
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} else {
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$response = $cachedResponse;
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}
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return $response;
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}
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/** {@inheritdoc} */
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public function filetype($path) {
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try {
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$response = $this->propfind($path);
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$responseType = array();
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if (isset($response["{DAV:}resourcetype"])) {
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/** @var ResourceType[] $response */
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$responseType = $response["{DAV:}resourcetype"]->getValue();
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}
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return (count($responseType) > 0 and $responseType[0] == "{DAV:}collection") ? 'dir' : 'file';
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} catch (ClientHttpException $e) {
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if ($e->getHttpStatus() === 404) {
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return false;
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}
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$this->convertException($e, $path);
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} catch (\Exception $e) {
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$this->convertException($e, $path);
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}
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return false;
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}
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/** {@inheritdoc} */
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public function file_exists($path) {
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try {
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$path = $this->cleanPath($path);
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$cachedState = $this->statCache->get($path);
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if ($cachedState === false) {
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// we know the file doesn't exist
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return false;
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} else if (!is_null($cachedState)) {
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return true;
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}
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// need to get from server
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$this->propfind($path);
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return true; //no 404 exception
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} catch (ClientHttpException $e) {
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if ($e->getHttpStatus() === 404) {
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return false;
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}
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$this->convertException($e, $path);
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} catch (\Exception $e) {
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$this->convertException($e, $path);
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}
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return false;
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}
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/** {@inheritdoc} */
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public function unlink($path) {
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$this->init();
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$path = $this->cleanPath($path);
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$result = $this->simpleResponse('DELETE', $path, null, 204);
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$this->statCache->clear($path . '/');
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$this->statCache->remove($path);
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return $result;
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}
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/** {@inheritdoc} */
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public function fopen($path, $mode) {
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$this->init();
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$path = $this->cleanPath($path);
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switch ($mode) {
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case 'r':
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case 'rb':
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if (!$this->file_exists($path)) {
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return false;
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}
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$response = $this->httpClientService
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->newClient()
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->get($this->createBaseUri() . $this->encodePath($path), [
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'auth' => [$this->user, $this->password],
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'stream' => true
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]);
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if ($response->getStatusCode() !== Http::STATUS_OK) {
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if ($response->getStatusCode() === Http::STATUS_LOCKED) {
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throw new \OCP\Lock\LockedException($path);
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} else {
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Util::writeLog("webdav client", 'Guzzle get returned status code ' . $response->getStatusCode(), Util::ERROR);
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}
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}
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return $response->getBody();
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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//emulate these
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$tempManager = \OC::$server->getTempManager();
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if (strrpos($path, '.') !== false) {
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$ext = substr($path, strrpos($path, '.'));
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} else {
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$ext = '';
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}
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if ($this->file_exists($path)) {
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if (!$this->isUpdatable($path)) {
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return false;
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}
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if ($mode === 'w' or $mode === 'w+') {
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$tmpFile = $tempManager->getTemporaryFile($ext);
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} else {
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$tmpFile = $this->getCachedFile($path);
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}
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} else {
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if (!$this->isCreatable(dirname($path))) {
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return false;
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}
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$tmpFile = $tempManager->getTemporaryFile($ext);
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}
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Close::registerCallback($tmpFile, array($this, 'writeBack'));
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self::$tempFiles[$tmpFile] = $path;
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return fopen('close://' . $tmpFile, $mode);
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}
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}
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/**
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* @param string $tmpFile
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*/
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public function writeBack($tmpFile) {
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if (isset(self::$tempFiles[$tmpFile])) {
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$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
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unlink($tmpFile);
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}
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}
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/** {@inheritdoc} */
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public function free_space($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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// TODO: cacheable ?
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$response = $this->client->propfind($this->encodePath($path), array('{DAV:}quota-available-bytes'));
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if (isset($response['{DAV:}quota-available-bytes'])) {
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return (int)$response['{DAV:}quota-available-bytes'];
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} else {
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return FileInfo::SPACE_UNKNOWN;
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}
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} catch (\Exception $e) {
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return FileInfo::SPACE_UNKNOWN;
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}
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}
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/** {@inheritdoc} */
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public function touch($path, $mtime = null) {
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$this->init();
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if (is_null($mtime)) {
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$mtime = time();
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}
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$path = $this->cleanPath($path);
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// if file exists, update the mtime, else create a new empty file
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if ($this->file_exists($path)) {
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try {
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$this->statCache->remove($path);
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$this->client->proppatch($this->encodePath($path), array('{DAV:}lastmodified' => $mtime));
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} catch (ClientHttpException $e) {
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if ($e->getHttpStatus() === 501) {
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return false;
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}
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$this->convertException($e, $path);
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return false;
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} catch (\Exception $e) {
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$this->convertException($e, $path);
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return false;
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}
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} else {
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$this->file_put_contents($path, '');
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}
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return true;
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}
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/**
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* @param string $path
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* @param string $data
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* @return int
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*/
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public function file_put_contents($path, $data) {
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$path = $this->cleanPath($path);
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$result = parent::file_put_contents($path, $data);
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$this->statCache->remove($path);
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return $result;
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}
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/**
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* @param string $path
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* @param string $target
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*/
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protected function uploadFile($path, $target) {
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$this->init();
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// invalidate
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$target = $this->cleanPath($target);
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$this->statCache->remove($target);
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$source = fopen($path, 'r');
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$this->httpClientService
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->newClient()
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->put($this->createBaseUri() . $this->encodePath($target), [
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'body' => $source,
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'auth' => [$this->user, $this->password]
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]);
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$this->removeCachedFile($target);
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}
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/** {@inheritdoc} */
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public function rename($path1, $path2) {
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$this->init();
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$path1 = $this->cleanPath($path1);
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$path2 = $this->cleanPath($path2);
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try {
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$this->client->request(
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'MOVE',
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$this->encodePath($path1),
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null,
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array(
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'Destination' => $this->createBaseUri() . $this->encodePath($path2)
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)
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);
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$this->statCache->clear($path1 . '/');
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$this->statCache->clear($path2 . '/');
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$this->statCache->set($path1, false);
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$this->statCache->set($path2, true);
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$this->removeCachedFile($path1);
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$this->removeCachedFile($path2);
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return true;
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} catch (\Exception $e) {
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$this->convertException($e);
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}
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return false;
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}
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/** {@inheritdoc} */
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public function copy($path1, $path2) {
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$this->init();
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$path1 = $this->encodePath($this->cleanPath($path1));
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$path2 = $this->createBaseUri() . $this->encodePath($this->cleanPath($path2));
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try {
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$this->client->request('COPY', $path1, null, array('Destination' => $path2));
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$this->statCache->clear($path2 . '/');
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$this->statCache->set($path2, true);
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$this->removeCachedFile($path2);
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return true;
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} catch (\Exception $e) {
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$this->convertException($e);
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}
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return false;
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}
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|
|
/** {@inheritdoc} */
|
|
public function stat($path) {
|
|
try {
|
|
$response = $this->propfind($path);
|
|
return array(
|
|
'mtime' => strtotime($response['{DAV:}getlastmodified']),
|
|
'size' => (int)isset($response['{DAV:}getcontentlength']) ? $response['{DAV:}getcontentlength'] : 0,
|
|
);
|
|
} catch (ClientHttpException $e) {
|
|
if ($e->getHttpStatus() === 404) {
|
|
return array();
|
|
}
|
|
$this->convertException($e, $path);
|
|
} catch (\Exception $e) {
|
|
$this->convertException($e, $path);
|
|
}
|
|
return array();
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function getMimeType($path) {
|
|
try {
|
|
$response = $this->propfind($path);
|
|
$responseType = array();
|
|
if (isset($response["{DAV:}resourcetype"])) {
|
|
/** @var ResourceType[] $response */
|
|
$responseType = $response["{DAV:}resourcetype"]->getValue();
|
|
}
|
|
$type = (count($responseType) > 0 and $responseType[0] == "{DAV:}collection") ? 'dir' : 'file';
|
|
if ($type == 'dir') {
|
|
return 'httpd/unix-directory';
|
|
} elseif (isset($response['{DAV:}getcontenttype'])) {
|
|
return $response['{DAV:}getcontenttype'];
|
|
} else {
|
|
return false;
|
|
}
|
|
} catch (ClientHttpException $e) {
|
|
if ($e->getHttpStatus() === 404) {
|
|
return false;
|
|
}
|
|
$this->convertException($e, $path);
|
|
} catch (\Exception $e) {
|
|
$this->convertException($e, $path);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
public function cleanPath($path) {
|
|
if ($path === '') {
|
|
return $path;
|
|
}
|
|
$path = Filesystem::normalizePath($path);
|
|
// remove leading slash
|
|
return substr($path, 1);
|
|
}
|
|
|
|
/**
|
|
* URL encodes the given path but keeps the slashes
|
|
*
|
|
* @param string $path to encode
|
|
* @return string encoded path
|
|
*/
|
|
private function encodePath($path) {
|
|
// slashes need to stay
|
|
return str_replace('%2F', '/', rawurlencode($path));
|
|
}
|
|
|
|
/**
|
|
* @param string $method
|
|
* @param string $path
|
|
* @param string|resource|null $body
|
|
* @param int $expected
|
|
* @return bool
|
|
* @throws StorageInvalidException
|
|
* @throws StorageNotAvailableException
|
|
*/
|
|
private function simpleResponse($method, $path, $body, $expected) {
|
|
$path = $this->cleanPath($path);
|
|
try {
|
|
$response = $this->client->request($method, $this->encodePath($path), $body);
|
|
return $response['statusCode'] == $expected;
|
|
} catch (ClientHttpException $e) {
|
|
if ($e->getHttpStatus() === 404 && $method === 'DELETE') {
|
|
$this->statCache->clear($path . '/');
|
|
$this->statCache->set($path, false);
|
|
return false;
|
|
}
|
|
|
|
$this->convertException($e, $path);
|
|
} catch (\Exception $e) {
|
|
$this->convertException($e, $path);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* check if curl is installed
|
|
*/
|
|
public static function checkDependencies() {
|
|
return true;
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function isUpdatable($path) {
|
|
return (bool)($this->getPermissions($path) & Constants::PERMISSION_UPDATE);
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function isCreatable($path) {
|
|
return (bool)($this->getPermissions($path) & Constants::PERMISSION_CREATE);
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function isSharable($path) {
|
|
return (bool)($this->getPermissions($path) & Constants::PERMISSION_SHARE);
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function isDeletable($path) {
|
|
return (bool)($this->getPermissions($path) & Constants::PERMISSION_DELETE);
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function getPermissions($path) {
|
|
$this->init();
|
|
$path = $this->cleanPath($path);
|
|
$response = $this->propfind($path);
|
|
if (isset($response['{http://owncloud.org/ns}permissions'])) {
|
|
return $this->parsePermissions($response['{http://owncloud.org/ns}permissions']);
|
|
} else if ($this->is_dir($path)) {
|
|
return Constants::PERMISSION_ALL;
|
|
} else if ($this->file_exists($path)) {
|
|
return Constants::PERMISSION_ALL - Constants::PERMISSION_CREATE;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/** {@inheritdoc} */
|
|
public function getETag($path) {
|
|
$this->init();
|
|
$path = $this->cleanPath($path);
|
|
$response = $this->propfind($path);
|
|
if (isset($response['{DAV:}getetag'])) {
|
|
return trim($response['{DAV:}getetag'], '"');
|
|
}
|
|
return parent::getEtag($path);
|
|
}
|
|
|
|
/**
|
|
* @param string $permissionsString
|
|
* @return int
|
|
*/
|
|
protected function parsePermissions($permissionsString) {
|
|
$permissions = Constants::PERMISSION_READ;
|
|
if (strpos($permissionsString, 'R') !== false) {
|
|
$permissions |= Constants::PERMISSION_SHARE;
|
|
}
|
|
if (strpos($permissionsString, 'D') !== false) {
|
|
$permissions |= Constants::PERMISSION_DELETE;
|
|
}
|
|
if (strpos($permissionsString, 'W') !== false) {
|
|
$permissions |= Constants::PERMISSION_UPDATE;
|
|
}
|
|
if (strpos($permissionsString, 'CK') !== false) {
|
|
$permissions |= Constants::PERMISSION_CREATE;
|
|
$permissions |= Constants::PERMISSION_UPDATE;
|
|
}
|
|
return $permissions;
|
|
}
|
|
|
|
/**
|
|
* check if a file or folder has been updated since $time
|
|
*
|
|
* @param string $path
|
|
* @param int $time
|
|
* @throws \OCP\Files\StorageNotAvailableException
|
|
* @return bool
|
|
*/
|
|
public function hasUpdated($path, $time) {
|
|
$this->init();
|
|
$path = $this->cleanPath($path);
|
|
try {
|
|
// force refresh for $path
|
|
$this->statCache->remove($path);
|
|
$response = $this->propfind($path);
|
|
if (isset($response['{DAV:}getetag'])) {
|
|
$cachedData = $this->getCache()->get($path);
|
|
$etag = null;
|
|
if (isset($response['{DAV:}getetag'])) {
|
|
$etag = trim($response['{DAV:}getetag'], '"');
|
|
}
|
|
if (!empty($etag) && $cachedData['etag'] !== $etag) {
|
|
return true;
|
|
} else if (isset($response['{http://owncloud.org/ns}permissions'])) {
|
|
$permissions = $this->parsePermissions($response['{http://owncloud.org/ns}permissions']);
|
|
return $permissions !== $cachedData['permissions'];
|
|
} else {
|
|
return false;
|
|
}
|
|
} else {
|
|
$remoteMtime = strtotime($response['{DAV:}getlastmodified']);
|
|
return $remoteMtime > $time;
|
|
}
|
|
} catch (ClientHttpException $e) {
|
|
if ($e->getHttpStatus() === 404 || $e->getHttpStatus() === 405) {
|
|
if ($path === '') {
|
|
// if root is gone it means the storage is not available
|
|
throw new StorageNotAvailableException(get_class($e) . ': ' . $e->getMessage());
|
|
}
|
|
return false;
|
|
}
|
|
$this->convertException($e, $path);
|
|
return false;
|
|
} catch (\Exception $e) {
|
|
$this->convertException($e, $path);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Interpret the given exception and decide whether it is due to an
|
|
* unavailable storage, invalid storage or other.
|
|
* This will either throw StorageInvalidException, StorageNotAvailableException
|
|
* or do nothing.
|
|
*
|
|
* @param Exception $e sabre exception
|
|
* @param string $path optional path from the operation
|
|
*
|
|
* @throws StorageInvalidException if the storage is invalid, for example
|
|
* when the authentication expired or is invalid
|
|
* @throws StorageNotAvailableException if the storage is not available,
|
|
* which might be temporary
|
|
*/
|
|
private function convertException(Exception $e, $path = '') {
|
|
Util::writeLog('files_external', $e->getMessage(), Util::ERROR);
|
|
if ($e instanceof ClientHttpException) {
|
|
if ($e->getHttpStatus() === 423) {
|
|
throw new \OCP\Lock\LockedException($path);
|
|
}
|
|
if ($e->getHttpStatus() === 401) {
|
|
// either password was changed or was invalid all along
|
|
throw new StorageInvalidException(get_class($e) . ': ' . $e->getMessage());
|
|
} else if ($e->getHttpStatus() === 405) {
|
|
// ignore exception for MethodNotAllowed, false will be returned
|
|
return;
|
|
}
|
|
throw new StorageNotAvailableException(get_class($e) . ': ' . $e->getMessage());
|
|
} else if ($e instanceof ClientException) {
|
|
// connection timeout or refused, server could be temporarily down
|
|
throw new StorageNotAvailableException(get_class($e) . ': ' . $e->getMessage());
|
|
} else if ($e instanceof \InvalidArgumentException) {
|
|
// parse error because the server returned HTML instead of XML,
|
|
// possibly temporarily down
|
|
throw new StorageNotAvailableException(get_class($e) . ': ' . $e->getMessage());
|
|
} else if (($e instanceof StorageNotAvailableException) || ($e instanceof StorageInvalidException)) {
|
|
// rethrow
|
|
throw $e;
|
|
}
|
|
|
|
// TODO: only log for now, but in the future need to wrap/rethrow exception
|
|
}
|
|
}
|
|
|