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-rw-r--r--apps/dav/lib/connector/sabre/filesplugin.php364
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diff --git a/apps/dav/lib/connector/sabre/filesplugin.php b/apps/dav/lib/connector/sabre/filesplugin.php
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--- a/apps/dav/lib/connector/sabre/filesplugin.php
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-<?php
-/**
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Robin McCorkell <robin@mccorkell.me.uk>
- * @author Roeland Jago Douma <rullzer@owncloud.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OCA\DAV\Connector\Sabre;
-
-use OC\Files\View;
-use Sabre\DAV\Exception\Forbidden;
-use Sabre\DAV\Exception\NotFound;
-use Sabre\DAV\IFile;
-use \Sabre\DAV\PropFind;
-use \Sabre\DAV\PropPatch;
-use Sabre\DAV\Tree;
-use \Sabre\HTTP\RequestInterface;
-use \Sabre\HTTP\ResponseInterface;
-use OCP\Files\StorageNotAvailableException;
-
-class FilesPlugin extends \Sabre\DAV\ServerPlugin {
-
- // namespace
- const NS_OWNCLOUD = 'http://owncloud.org/ns';
- const FILEID_PROPERTYNAME = '{http://owncloud.org/ns}id';
- const INTERNAL_FILEID_PROPERTYNAME = '{http://owncloud.org/ns}fileid';
- const PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}permissions';
- const SHARE_PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}share-permissions';
- const DOWNLOADURL_PROPERTYNAME = '{http://owncloud.org/ns}downloadURL';
- const SIZE_PROPERTYNAME = '{http://owncloud.org/ns}size';
- const GETETAG_PROPERTYNAME = '{DAV:}getetag';
- const LASTMODIFIED_PROPERTYNAME = '{DAV:}lastmodified';
- const OWNER_ID_PROPERTYNAME = '{http://owncloud.org/ns}owner-id';
- const OWNER_DISPLAY_NAME_PROPERTYNAME = '{http://owncloud.org/ns}owner-display-name';
- const CHECKSUMS_PROPERTYNAME = '{http://owncloud.org/ns}checksums';
-
- /**
- * Reference to main server object
- *
- * @var \Sabre\DAV\Server
- */
- private $server;
-
- /**
- * @var Tree
- */
- private $tree;
-
- /**
- * Whether this is public webdav.
- * If true, some returned information will be stripped off.
- *
- * @var bool
- */
- private $isPublic;
-
- /**
- * @var View
- */
- private $fileView;
-
- /**
- * @var bool
- */
- private $downloadAttachment;
-
- /**
- * @param Tree $tree
- * @param View $view
- * @param bool $isPublic
- * @param bool $downloadAttachment
- */
- public function __construct(Tree $tree,
- View $view,
- $isPublic = false,
- $downloadAttachment = true) {
- $this->tree = $tree;
- $this->fileView = $view;
- $this->isPublic = $isPublic;
- $this->downloadAttachment = $downloadAttachment;
- }
-
- /**
- * This initializes the plugin.
- *
- * This function is called by \Sabre\DAV\Server, after
- * addPlugin is called.
- *
- * This method should set up the required event subscriptions.
- *
- * @param \Sabre\DAV\Server $server
- * @return void
- */
- public function initialize(\Sabre\DAV\Server $server) {
-
- $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
- $server->protectedProperties[] = self::FILEID_PROPERTYNAME;
- $server->protectedProperties[] = self::INTERNAL_FILEID_PROPERTYNAME;
- $server->protectedProperties[] = self::PERMISSIONS_PROPERTYNAME;
- $server->protectedProperties[] = self::SHARE_PERMISSIONS_PROPERTYNAME;
- $server->protectedProperties[] = self::SIZE_PROPERTYNAME;
- $server->protectedProperties[] = self::DOWNLOADURL_PROPERTYNAME;
- $server->protectedProperties[] = self::OWNER_ID_PROPERTYNAME;
- $server->protectedProperties[] = self::OWNER_DISPLAY_NAME_PROPERTYNAME;
- $server->protectedProperties[] = self::CHECKSUMS_PROPERTYNAME;
-
- // normally these cannot be changed (RFC4918), but we want them modifiable through PROPPATCH
- $allowedProperties = ['{DAV:}getetag'];
- $server->protectedProperties = array_diff($server->protectedProperties, $allowedProperties);
-
- $this->server = $server;
- $this->server->on('propFind', array($this, 'handleGetProperties'));
- $this->server->on('propPatch', array($this, 'handleUpdateProperties'));
- $this->server->on('afterBind', array($this, 'sendFileIdHeader'));
- $this->server->on('afterWriteContent', array($this, 'sendFileIdHeader'));
- $this->server->on('afterMethod:GET', [$this,'httpGet']);
- $this->server->on('afterMethod:GET', array($this, 'handleDownloadToken'));
- $this->server->on('afterResponse', function($request, ResponseInterface $response) {
- $body = $response->getBody();
- if (is_resource($body)) {
- fclose($body);
- }
- });
- $this->server->on('beforeMove', [$this, 'checkMove']);
- }
-
- /**
- * Plugin that checks if a move can actually be performed.
- * @param string $source source path
- * @param string $destination destination path
- * @throws Forbidden
- */
- function checkMove($source, $destination) {
- list($sourceDir,) = \Sabre\HTTP\URLUtil::splitPath($source);
- list($destinationDir,) = \Sabre\HTTP\URLUtil::splitPath($destination);
-
- if ($sourceDir !== $destinationDir) {
- $sourceFileInfo = $this->fileView->getFileInfo($source);
-
- if ($sourceFileInfo === false) {
- throw new NotFound($source . ' does not exist');
- }
-
- if (!$sourceFileInfo->isDeletable()) {
- throw new Forbidden($source . " cannot be deleted");
- }
- }
- }
-
- /**
- * This sets a cookie to be able to recognize the start of the download
- * the content must not be longer than 32 characters and must only contain
- * alphanumeric characters
- *
- * @param RequestInterface $request
- * @param ResponseInterface $response
- */
- function handleDownloadToken(RequestInterface $request, ResponseInterface $response) {
- $queryParams = $request->getQueryParameters();
-
- /**
- * this sets a cookie to be able to recognize the start of the download
- * the content must not be longer than 32 characters and must only contain
- * alphanumeric characters
- */
- if (isset($queryParams['downloadStartSecret'])) {
- $token = $queryParams['downloadStartSecret'];
- if (!isset($token[32])
- && preg_match('!^[a-zA-Z0-9]+$!', $token) === 1) {
- // FIXME: use $response->setHeader() instead
- setcookie('ocDownloadStarted', $token, time() + 20, '/');
- }
- }
- }
-
- /**
- * Add headers to file download
- *
- * @param RequestInterface $request
- * @param ResponseInterface $response
- */
- function httpGet(RequestInterface $request, ResponseInterface $response) {
- // Only handle valid files
- $node = $this->tree->getNodeForPath($request->getPath());
- if (!($node instanceof IFile)) return;
-
- // adds a 'Content-Disposition: attachment' header
- if ($this->downloadAttachment) {
- $response->addHeader('Content-Disposition', 'attachment');
- }
-
- if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
- //Add OC-Checksum header
- /** @var $node File */
- $checksum = $node->getChecksum();
- if ($checksum !== null && $checksum !== '') {
- $response->addHeader('OC-Checksum', $checksum);
- }
- }
- }
-
- /**
- * Adds all ownCloud-specific properties
- *
- * @param PropFind $propFind
- * @param \Sabre\DAV\INode $node
- * @return void
- */
- public function handleGetProperties(PropFind $propFind, \Sabre\DAV\INode $node) {
-
- if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
-
- $propFind->handle(self::FILEID_PROPERTYNAME, function() use ($node) {
- return $node->getFileId();
- });
-
- $propFind->handle(self::INTERNAL_FILEID_PROPERTYNAME, function() use ($node) {
- return $node->getInternalFileId();
- });
-
- $propFind->handle(self::PERMISSIONS_PROPERTYNAME, function() use ($node) {
- $perms = $node->getDavPermissions();
- if ($this->isPublic) {
- // remove mount information
- $perms = str_replace(['S', 'M'], '', $perms);
- }
- return $perms;
- });
-
- $propFind->handle(self::SHARE_PERMISSIONS_PROPERTYNAME, function() use ($node) {
- return $node->getSharePermissions();
- });
-
- $propFind->handle(self::GETETAG_PROPERTYNAME, function() use ($node) {
- return $node->getETag();
- });
-
- $propFind->handle(self::OWNER_ID_PROPERTYNAME, function() use ($node) {
- $owner = $node->getOwner();
- return $owner->getUID();
- });
- $propFind->handle(self::OWNER_DISPLAY_NAME_PROPERTYNAME, function() use ($node) {
- $owner = $node->getOwner();
- $displayName = $owner->getDisplayName();
- return $displayName;
- });
- }
-
- if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
- $propFind->handle(self::DOWNLOADURL_PROPERTYNAME, function() use ($node) {
- /** @var $node \OCA\DAV\Connector\Sabre\File */
- try {
- $directDownloadUrl = $node->getDirectDownload();
- if (isset($directDownloadUrl['url'])) {
- return $directDownloadUrl['url'];
- }
- } catch (StorageNotAvailableException $e) {
- return false;
- }
- return false;
- });
-
- $propFind->handle(self::CHECKSUMS_PROPERTYNAME, function() use ($node) {
- $checksum = $node->getChecksum();
- if ($checksum === NULL || $checksum === '') {
- return null;
- }
-
- return new ChecksumList($checksum);
- });
-
- }
-
- if ($node instanceof \OCA\DAV\Connector\Sabre\Directory) {
- $propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
- return $node->getSize();
- });
- }
- }
-
- /**
- * Update ownCloud-specific properties
- *
- * @param string $path
- * @param PropPatch $propPatch
- *
- * @return void
- */
- public function handleUpdateProperties($path, PropPatch $propPatch) {
- $propPatch->handle(self::LASTMODIFIED_PROPERTYNAME, function($time) use ($path) {
- if (empty($time)) {
- return false;
- }
- $node = $this->tree->getNodeForPath($path);
- if (is_null($node)) {
- return 404;
- }
- $node->touch($time);
- return true;
- });
- $propPatch->handle(self::GETETAG_PROPERTYNAME, function($etag) use ($path) {
- if (empty($etag)) {
- return false;
- }
- $node = $this->tree->getNodeForPath($path);
- if (is_null($node)) {
- return 404;
- }
- if ($node->setEtag($etag) !== -1) {
- return true;
- }
- return false;
- });
- }
-
- /**
- * @param string $filePath
- * @param \Sabre\DAV\INode $node
- * @throws \Sabre\DAV\Exception\BadRequest
- */
- public function sendFileIdHeader($filePath, \Sabre\DAV\INode $node = null) {
- // chunked upload handling
- if (isset($_SERVER['HTTP_OC_CHUNKED'])) {
- list($path, $name) = \Sabre\HTTP\URLUtil::splitPath($filePath);
- $info = \OC_FileChunking::decodeName($name);
- if (!empty($info)) {
- $filePath = $path . '/' . $info['name'];
- }
- }
-
- // we get the node for the given $filePath here because in case of afterCreateFile $node is the parent folder
- if (!$this->server->tree->nodeExists($filePath)) {
- return;
- }
- $node = $this->server->tree->getNodeForPath($filePath);
- if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
- $fileId = $node->getFileId();
- if (!is_null($fileId)) {
- $this->server->httpResponse->setHeader('OC-FileId', $fileId);
- }
- }
- }
-
-}
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