673 lines
21 KiB
PHP
673 lines
21 KiB
PHP
<?php
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/**
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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*
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* @copyright Copyright (c) 2016, 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 OCA\Files_Sharing\API;
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use OCP\Files\NotFoundException;
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use OCP\IGroupManager;
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use OCP\IUserManager;
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use OCP\IRequest;
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use OCP\IURLGenerator;
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use OCP\IUser;
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use OCP\Files\IRootFolder;
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use OCP\Share;
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use OCP\Share\IManager;
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use OCP\Share\Exceptions\ShareNotFound;
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use OCP\Share\Exceptions\GenericShareException;
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/**
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* Class Share20OCS
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*
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* @package OCA\Files_Sharing\API
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*/
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class Share20OCS {
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/** @var IManager */
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private $shareManager;
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/** @var IGroupManager */
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private $groupManager;
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/** @var IUserManager */
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private $userManager;
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/** @var IRequest */
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private $request;
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/** @var IRootFolder */
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private $rootFolder;
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/** @var IURLGenerator */
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private $urlGenerator;
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/** @var IUser */
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private $currentUser;
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/**
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* Share20OCS constructor.
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*
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* @param IManager $shareManager
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* @param IGroupManager $groupManager
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* @param IUserManager $userManager
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* @param IRequest $request
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* @param IRootFolder $rootFolder
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* @param IURLGenerator $urlGenerator
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* @param IUser $currentUser
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*/
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public function __construct(
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IManager $shareManager,
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IGroupManager $groupManager,
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IUserManager $userManager,
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IRequest $request,
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IRootFolder $rootFolder,
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IURLGenerator $urlGenerator,
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IUser $currentUser
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) {
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$this->shareManager = $shareManager;
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$this->userManager = $userManager;
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$this->groupManager = $groupManager;
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$this->request = $request;
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$this->rootFolder = $rootFolder;
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$this->urlGenerator = $urlGenerator;
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$this->currentUser = $currentUser;
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}
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/**
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* Convert an IShare to an array for OCS output
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*
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* @param \OCP\Share\IShare $share
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* @return array
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* @throws NotFoundException In case the node can't be resolved.
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*/
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protected function formatShare(\OCP\Share\IShare $share) {
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$sharedBy = $this->userManager->get($share->getSharedBy());
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$shareOwner = $this->userManager->get($share->getShareOwner());
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$result = [
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'id' => $share->getId(),
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'share_type' => $share->getShareType(),
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'uid_owner' => $share->getSharedBy(),
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'displayname_owner' => $sharedBy !== null ? $sharedBy->getDisplayName() : $share->getSharedBy(),
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'permissions' => $share->getPermissions(),
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'stime' => $share->getShareTime()->getTimestamp(),
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'parent' => null,
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'expiration' => null,
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'token' => null,
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'uid_file_owner' => $share->getShareOwner(),
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'displayname_file_owner' => $shareOwner !== null ? $shareOwner->getDisplayName() : $share->getShareOwner(),
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];
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$node = $share->getNode();
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$result['path'] = $this->rootFolder->getUserFolder($share->getShareOwner())->getRelativePath($node->getPath());
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if ($node instanceOf \OCP\Files\Folder) {
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$result['item_type'] = 'folder';
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} else {
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$result['item_type'] = 'file';
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}
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$result['mimetype'] = $node->getMimeType();
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$result['storage_id'] = $node->getStorage()->getId();
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$result['storage'] = $node->getStorage()->getCache()->getNumericStorageId();
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$result['item_source'] = $node->getId();
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$result['file_source'] = $node->getId();
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$result['file_parent'] = $node->getParent()->getId();
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$result['file_target'] = $share->getTarget();
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if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
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$sharedWith = $this->userManager->get($share->getSharedWith());
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$result['share_with'] = $share->getSharedWith();
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$result['share_with_displayname'] = $sharedWith !== null ? $sharedWith->getDisplayName() : $share->getSharedWith();
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
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$result['share_with'] = $share->getSharedWith();
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$result['share_with_displayname'] = $share->getSharedWith();
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
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$result['share_with'] = $share->getPassword();
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$result['share_with_displayname'] = $share->getPassword();
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$result['token'] = $share->getToken();
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$result['url'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $share->getToken()]);
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$expiration = $share->getExpirationDate();
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if ($expiration !== null) {
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$result['expiration'] = $expiration->format('Y-m-d 00:00:00');
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}
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
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$result['share_with'] = $share->getSharedWith();
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$result['share_with_displayname'] = $share->getSharedWith();
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$result['token'] = $share->getToken();
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}
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$result['mail_send'] = $share->getMailSend() ? 1 : 0;
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return $result;
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}
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/**
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* Get a specific share by id
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*
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* @param string $id
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* @return \OC_OCS_Result
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*/
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public function getShare($id) {
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try {
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$share = $this->getShareById($id);
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} catch (ShareNotFound $e) {
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return new \OC_OCS_Result(null, 404, 'wrong share ID, share doesn\'t exist.');
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}
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if ($this->canAccessShare($share)) {
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try {
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$share = $this->formatShare($share);
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return new \OC_OCS_Result([$share]);
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} catch (NotFoundException $e) {
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//Fall trough
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}
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}
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return new \OC_OCS_Result(null, 404, 'wrong share ID, share doesn\'t exist.');
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}
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/**
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* Delete a share
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*
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* @param string $id
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* @return \OC_OCS_Result
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*/
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public function deleteShare($id) {
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// Try both our default and our federated provider
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try {
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$share = $this->getShareById($id);
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} catch (ShareNotFound $e) {
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return new \OC_OCS_Result(null, 404, 'wrong share ID, share doesn\'t exist.');
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}
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if (!$this->canAccessShare($share)) {
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return new \OC_OCS_Result(null, 404, 'could not delete share');
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}
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$this->shareManager->deleteShare($share);
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return new \OC_OCS_Result();
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}
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/**
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* @return \OC_OCS_Result
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*/
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public function createShare() {
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$share = $this->shareManager->newShare();
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// Verify path
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$path = $this->request->getParam('path', null);
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if ($path === null) {
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return new \OC_OCS_Result(null, 404, 'please specify a file or folder path');
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}
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$userFolder = $this->rootFolder->getUserFolder($this->currentUser->getUID());
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try {
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$path = $userFolder->get($path);
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} catch (\OCP\Files\NotFoundException $e) {
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return new \OC_OCS_Result(null, 404, 'wrong path, file/folder doesn\'t exist');
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}
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$share->setNode($path);
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// Parse permissions (if available)
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$permissions = $this->request->getParam('permissions', null);
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if ($permissions === null) {
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$permissions = \OCP\Constants::PERMISSION_ALL;
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} else {
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$permissions = (int)$permissions;
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}
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if ($permissions < 0 || $permissions > \OCP\Constants::PERMISSION_ALL) {
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return new \OC_OCS_Result(null, 404, 'invalid permissions');
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}
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// Shares always require read permissions
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$permissions |= \OCP\Constants::PERMISSION_READ;
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if ($path instanceof \OCP\Files\File) {
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// Single file shares should never have delete or create permissions
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$permissions &= ~\OCP\Constants::PERMISSION_DELETE;
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$permissions &= ~\OCP\Constants::PERMISSION_CREATE;
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}
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/*
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* Hack for https://github.com/owncloud/core/issues/22587
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* We check the permissions via webdav. But the permissions of the mount point
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* do not equal the share permissions. Here we fix that for federated mounts.
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*/
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if ($path->getStorage()->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
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$permissions &= ~($permissions & ~$path->getPermissions());
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}
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$shareWith = $this->request->getParam('shareWith', null);
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$shareType = (int)$this->request->getParam('shareType', '-1');
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if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
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// Valid user is required to share
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if ($shareWith === null || !$this->userManager->userExists($shareWith)) {
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return new \OC_OCS_Result(null, 404, 'please specify a valid user');
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}
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$share->setSharedWith($shareWith);
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$share->setPermissions($permissions);
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} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
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// Valid group is required to share
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if ($shareWith === null || !$this->groupManager->groupExists($shareWith)) {
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return new \OC_OCS_Result(null, 404, 'please specify a valid group');
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}
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$share->setSharedWith($shareWith);
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$share->setPermissions($permissions);
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} else if ($shareType === \OCP\Share::SHARE_TYPE_LINK) {
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//Can we even share links?
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if (!$this->shareManager->shareApiAllowLinks()) {
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return new \OC_OCS_Result(null, 404, 'public link sharing is disabled by the administrator');
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}
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/*
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* For now we only allow 1 link share.
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* Return the existing link share if this is a duplicate
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*/
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$existingShares = $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_LINK, $path, false, 1, 0);
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if (!empty($existingShares)) {
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return new \OC_OCS_Result($this->formatShare($existingShares[0]));
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}
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$publicUpload = $this->request->getParam('publicUpload', null);
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if ($publicUpload === 'true') {
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// Check if public upload is allowed
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if (!$this->shareManager->shareApiLinkAllowPublicUpload()) {
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return new \OC_OCS_Result(null, 403, 'public upload disabled by the administrator');
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}
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// Public upload can only be set for folders
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if ($path instanceof \OCP\Files\File) {
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return new \OC_OCS_Result(null, 404, 'public upload is only possible for public shared folders');
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}
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$share->setPermissions(
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\OCP\Constants::PERMISSION_READ |
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\OCP\Constants::PERMISSION_CREATE |
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\OCP\Constants::PERMISSION_UPDATE
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);
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} else {
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$share->setPermissions(\OCP\Constants::PERMISSION_READ);
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}
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// Set password
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$password = $this->request->getParam('password', '');
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if ($password !== '') {
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$share->setPassword($password);
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}
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//Expire date
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$expireDate = $this->request->getParam('expireDate', '');
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if ($expireDate !== '') {
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try {
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$expireDate = $this->parseDate($expireDate);
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$share->setExpirationDate($expireDate);
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, 404, 'Invalid Date. Format must be YYYY-MM-DD.');
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}
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}
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} else if ($shareType === \OCP\Share::SHARE_TYPE_REMOTE) {
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if (!$this->shareManager->outgoingServer2ServerSharesAllowed()) {
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return new \OC_OCS_Result(null, 403, 'Sharing '.$path->getPath().' failed, because the backend does not allow shares from type '.$shareType);
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}
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$share->setSharedWith($shareWith);
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$share->setPermissions($permissions);
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} else {
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return new \OC_OCS_Result(null, 400, "unknown share type");
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}
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$share->setShareType($shareType);
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$share->setSharedBy($this->currentUser->getUID());
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try {
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$share = $this->shareManager->createShare($share);
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} catch (GenericShareException $e) {
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$code = $e->getCode() === 0 ? 403 : $e->getCode();
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return new \OC_OCS_Result(null, $code, $e->getHint());
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}catch (\Exception $e) {
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return new \OC_OCS_Result(null, 403, $e->getMessage());
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}
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$share = $this->formatShare($share);
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return new \OC_OCS_Result($share);
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}
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/**
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* @param \OCP\Files\File|\OCP\Files\Folder $node
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* @return \OC_OCS_Result
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*/
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private function getSharedWithMe($node = null) {
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$userShares = $this->shareManager->getSharedWith($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_USER, $node, -1, 0);
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$groupShares = $this->shareManager->getSharedWith($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_GROUP, $node, -1, 0);
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$shares = array_merge($userShares, $groupShares);
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$formatted = [];
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foreach ($shares as $share) {
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if ($this->canAccessShare($share)) {
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try {
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$formatted[] = $this->formatShare($share);
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} catch (NotFoundException $e) {
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// Ignore this share
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}
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}
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}
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return new \OC_OCS_Result($formatted);
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}
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/**
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* @param \OCP\Files\Folder $folder
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* @return \OC_OCS_Result
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*/
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private function getSharesInDir($folder) {
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if (!($folder instanceof \OCP\Files\Folder)) {
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return new \OC_OCS_Result(null, 400, "not a directory");
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}
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$nodes = $folder->getDirectoryListing();
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/** @var \OCP\Share\IShare[] $shares */
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$shares = [];
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foreach ($nodes as $node) {
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$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_USER, $node, false, -1, 0));
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$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_GROUP, $node, false, -1, 0));
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$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_LINK, $node, false, -1, 0));
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if ($this->shareManager->outgoingServer2ServerSharesAllowed()) {
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$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_REMOTE, $node, false, -1, 0));
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}
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}
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$formatted = [];
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foreach ($shares as $share) {
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try {
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$formatted[] = $this->formatShare($share);
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} catch (NotFoundException $e) {
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//Ignore this share
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}
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}
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return new \OC_OCS_Result($formatted);
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}
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/**
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* The getShares function.
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*
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* - Get shares by the current user
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* - Get shares by the current user and reshares (?reshares=true)
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* - Get shares with the current user (?shared_with_me=true)
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* - Get shares for a specific path (?path=...)
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* - Get all shares in a folder (?subfiles=true&path=..)
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*
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* @return \OC_OCS_Result
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*/
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public function getShares() {
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$sharedWithMe = $this->request->getParam('shared_with_me', null);
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$reshares = $this->request->getParam('reshares', null);
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$subfiles = $this->request->getParam('subfiles');
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$path = $this->request->getParam('path', null);
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if ($path !== null) {
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$userFolder = $this->rootFolder->getUserFolder($this->currentUser->getUID());
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try {
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$path = $userFolder->get($path);
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} catch (\OCP\Files\NotFoundException $e) {
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return new \OC_OCS_Result(null, 404, 'wrong path, file/folder doesn\'t exist');
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}
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}
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if ($sharedWithMe === 'true') {
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return $this->getSharedWithMe($path);
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}
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if ($subfiles === 'true') {
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return $this->getSharesInDir($path);
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}
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if ($reshares === 'true') {
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$reshares = true;
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} else {
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$reshares = false;
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}
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// Get all shares
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$userShares = $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_USER, $path, $reshares, -1, 0);
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$groupShares = $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_GROUP, $path, $reshares, -1, 0);
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$linkShares = $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_LINK, $path, $reshares, -1, 0);
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$shares = array_merge($userShares, $groupShares, $linkShares);
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if ($this->shareManager->outgoingServer2ServerSharesAllowed()) {
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$federatedShares = $this->shareManager->getSharesBy($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_REMOTE, $path, $reshares, -1, 0);
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$shares = array_merge($shares, $federatedShares);
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}
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$formatted = [];
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foreach ($shares as $share) {
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try {
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$formatted[] = $this->formatShare($share);
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} catch (NotFoundException $e) {
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//Ignore share
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}
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}
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return new \OC_OCS_Result($formatted);
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}
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/**
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* @param int $id
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* @return \OC_OCS_Result
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*/
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public function updateShare($id) {
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|
try {
|
|
$share = $this->getShareById($id);
|
|
} catch (ShareNotFound $e) {
|
|
return new \OC_OCS_Result(null, 404, 'wrong share ID, share doesn\'t exist.');
|
|
}
|
|
|
|
if (!$this->canAccessShare($share)) {
|
|
return new \OC_OCS_Result(null, 404, 'wrong share Id, share doesn\'t exist.');
|
|
}
|
|
|
|
$permissions = $this->request->getParam('permissions', null);
|
|
$password = $this->request->getParam('password', null);
|
|
$publicUpload = $this->request->getParam('publicUpload', null);
|
|
$expireDate = $this->request->getParam('expireDate', null);
|
|
|
|
/*
|
|
* expirationdate, password and publicUpload only make sense for link shares
|
|
*/
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
|
|
if ($permissions === null && $password === null && $publicUpload === null && $expireDate === null) {
|
|
return new \OC_OCS_Result(null, 400, 'Wrong or no update parameter given');
|
|
}
|
|
|
|
$newPermissions = null;
|
|
if ($publicUpload === 'true') {
|
|
$newPermissions = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE;
|
|
} else if ($publicUpload === 'false') {
|
|
$newPermissions = \OCP\Constants::PERMISSION_READ;
|
|
}
|
|
|
|
if ($permissions !== null) {
|
|
$newPermissions = (int)$permissions;
|
|
}
|
|
|
|
if ($newPermissions !== null &&
|
|
$newPermissions !== \OCP\Constants::PERMISSION_READ &&
|
|
$newPermissions !== (\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE)) {
|
|
return new \OC_OCS_Result(null, 400, 'can\'t change permission for public link share');
|
|
}
|
|
|
|
if ($newPermissions === (\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE)) {
|
|
if (!$this->shareManager->shareApiLinkAllowPublicUpload()) {
|
|
return new \OC_OCS_Result(null, 403, 'public upload disabled by the administrator');
|
|
}
|
|
|
|
if (!($share->getNode() instanceof \OCP\Files\Folder)) {
|
|
return new \OC_OCS_Result(null, 400, "public upload is only possible for public shared folders");
|
|
}
|
|
}
|
|
|
|
if ($newPermissions !== null) {
|
|
$share->setPermissions($newPermissions);
|
|
}
|
|
|
|
if ($expireDate === '') {
|
|
$share->setExpirationDate(null);
|
|
} else if ($expireDate !== null) {
|
|
try {
|
|
$expireDate = $this->parseDate($expireDate);
|
|
} catch (\Exception $e) {
|
|
return new \OC_OCS_Result(null, 400, $e->getMessage());
|
|
}
|
|
$share->setExpirationDate($expireDate);
|
|
}
|
|
|
|
if ($password === '') {
|
|
$share->setPassword(null);
|
|
} else if ($password !== null) {
|
|
$share->setPassword($password);
|
|
}
|
|
|
|
} else {
|
|
// For other shares only permissions is valid.
|
|
if ($permissions === null) {
|
|
return new \OC_OCS_Result(null, 400, 'Wrong or no update parameter given');
|
|
} else {
|
|
$permissions = (int)$permissions;
|
|
$share->setPermissions($permissions);
|
|
}
|
|
}
|
|
|
|
if ($permissions !== null) {
|
|
/* Check if this is an incomming share */
|
|
$incomingShares = $this->shareManager->getSharedWith($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_USER, $share->getNode(), -1, 0);
|
|
$incomingShares = array_merge($incomingShares, $this->shareManager->getSharedWith($this->currentUser->getUID(), \OCP\Share::SHARE_TYPE_GROUP, $share->getNode(), -1, 0));
|
|
|
|
if (!empty($incomingShares)) {
|
|
$maxPermissions = 0;
|
|
foreach ($incomingShares as $incomingShare) {
|
|
$maxPermissions |= $incomingShare->getPermissions();
|
|
}
|
|
|
|
if ($share->getPermissions() & ~$maxPermissions) {
|
|
return new \OC_OCS_Result(null, 404, 'Cannot increase permissions');
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
try {
|
|
$share = $this->shareManager->updateShare($share);
|
|
} catch (\Exception $e) {
|
|
return new \OC_OCS_Result(null, 400, $e->getMessage());
|
|
}
|
|
|
|
return new \OC_OCS_Result($this->formatShare($share));
|
|
}
|
|
|
|
/**
|
|
* @param \OCP\Share\IShare $share
|
|
* @return bool
|
|
*/
|
|
protected function canAccessShare(\OCP\Share\IShare $share) {
|
|
// A file with permissions 0 can't be accessed by us. So Don't show it
|
|
if ($share->getPermissions() === 0) {
|
|
return false;
|
|
}
|
|
|
|
// Owner of the file and the sharer of the file can always get share
|
|
if ($share->getShareOwner() === $this->currentUser->getUID() ||
|
|
$share->getSharedBy() === $this->currentUser->getUID()
|
|
) {
|
|
return true;
|
|
}
|
|
|
|
// If the share is shared with you (or a group you are a member of)
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
|
|
$share->getSharedWith() === $this->currentUser->getUID()) {
|
|
return true;
|
|
}
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
|
|
$sharedWith = $this->groupManager->get($share->getSharedWith());
|
|
if ($sharedWith->inGroup($this->currentUser)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Make sure that the passed date is valid ISO 8601
|
|
* So YYYY-MM-DD
|
|
* If not throw an exception
|
|
*
|
|
* @param string $expireDate
|
|
*
|
|
* @throws \Exception
|
|
* @return \DateTime
|
|
*/
|
|
private function parseDate($expireDate) {
|
|
try {
|
|
$date = new \DateTime($expireDate);
|
|
} catch (\Exception $e) {
|
|
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
|
|
}
|
|
|
|
if ($date === false) {
|
|
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
|
|
}
|
|
|
|
$date->setTime(0,0,0);
|
|
|
|
return $date;
|
|
}
|
|
|
|
/**
|
|
* Since we have multiple providers but the OCS Share API v1 does
|
|
* not support this we need to check all backends.
|
|
*
|
|
* @param string $id
|
|
* @return \OCP\Share\IShare
|
|
* @throws ShareNotFound
|
|
*/
|
|
private function getShareById($id) {
|
|
$share = null;
|
|
|
|
// First check if it is an internal share.
|
|
try {
|
|
$share = $this->shareManager->getShareById('ocinternal:'.$id);
|
|
} catch (ShareNotFound $e) {
|
|
if (!$this->shareManager->outgoingServer2ServerSharesAllowed()) {
|
|
throw new ShareNotFound();
|
|
}
|
|
|
|
$share = $this->shareManager->getShareById('ocFederatedSharing:' . $id);
|
|
}
|
|
|
|
return $share;
|
|
}
|
|
}
|