1232 lines
36 KiB
PHP
1232 lines
36 KiB
PHP
<?php
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/**
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* @author Arthur Schiwon <blizzz@owncloud.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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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 OC\Share20;
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use OC\Files\Mount\MoveableMount;
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use OCP\Files\IRootFolder;
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use OCP\Files\NotFoundException;
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use OCP\IUserManager;
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use OCP\Share\IManager;
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use OCP\Share\IProviderFactory;
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use OC\Share20\Exception\BackendError;
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use OCP\IConfig;
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use OCP\IL10N;
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use OCP\ILogger;
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use OCP\Security\ISecureRandom;
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use OCP\Security\IHasher;
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use OCP\Files\Mount\IMountManager;
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use OCP\IGroupManager;
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use OCP\Files\File;
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use OCP\Files\Folder;
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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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* This class is the communication hub for all sharing related operations.
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*/
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class Manager implements IManager {
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/** @var IProviderFactory */
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private $factory;
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/** @var ILogger */
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private $logger;
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/** @var IConfig */
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private $config;
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/** @var ISecureRandom */
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private $secureRandom;
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/** @var IHasher */
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private $hasher;
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/** @var IMountManager */
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private $mountManager;
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/** @var IGroupManager */
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private $groupManager;
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/** @var IL10N */
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private $l;
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/** @var IUserManager */
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private $userManager;
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/** @var IRootFolder */
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private $rootFolder;
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/**
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* Manager constructor.
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*
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* @param ILogger $logger
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* @param IConfig $config
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* @param ISecureRandom $secureRandom
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* @param IHasher $hasher
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* @param IMountManager $mountManager
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* @param IGroupManager $groupManager
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* @param IL10N $l
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* @param IProviderFactory $factory
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* @param IUserManager $userManager
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* @param IRootFolder $rootFolder
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*/
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public function __construct(
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ILogger $logger,
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IConfig $config,
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ISecureRandom $secureRandom,
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IHasher $hasher,
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IMountManager $mountManager,
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IGroupManager $groupManager,
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IL10N $l,
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IProviderFactory $factory,
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IUserManager $userManager,
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IRootFolder $rootFolder
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) {
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$this->logger = $logger;
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$this->config = $config;
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$this->secureRandom = $secureRandom;
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$this->hasher = $hasher;
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$this->mountManager = $mountManager;
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$this->groupManager = $groupManager;
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$this->l = $l;
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$this->factory = $factory;
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$this->userManager = $userManager;
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$this->rootFolder = $rootFolder;
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}
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/**
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* Convert from a full share id to a tuple (providerId, shareId)
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*
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* @param string $id
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* @return string[]
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*/
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private function splitFullId($id) {
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return explode(':', $id, 2);
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}
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/**
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* Verify if a password meets all requirements
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*
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* @param string $password
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* @throws \Exception
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*/
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protected function verifyPassword($password) {
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if ($password === null) {
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// No password is set, check if this is allowed.
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if ($this->shareApiLinkEnforcePassword()) {
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throw new \InvalidArgumentException('Passwords are enforced for link shares');
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}
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return;
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}
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// Let others verify the password
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$accepted = true;
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$message = '';
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\OCP\Util::emitHook('\OC\Share', 'verifyPassword', [
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'password' => $password,
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'accepted' => &$accepted,
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'message' => &$message
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]);
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if (!$accepted) {
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throw new \Exception($message);
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}
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}
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/**
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* Check for generic requirements before creating a share
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*
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* @param \OCP\Share\IShare $share
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* @throws \InvalidArgumentException
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* @throws GenericShareException
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*/
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protected function generalCreateChecks(\OCP\Share\IShare $share) {
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if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
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// We expect a valid user as sharedWith for user shares
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if (!$this->userManager->userExists($share->getSharedWith())) {
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throw new \InvalidArgumentException('SharedWith is not a valid user');
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}
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
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// We expect a valid group as sharedWith for group shares
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if (!$this->groupManager->groupExists($share->getSharedWith())) {
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throw new \InvalidArgumentException('SharedWith is not a valid group');
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}
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
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if ($share->getSharedWith() !== null) {
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throw new \InvalidArgumentException('SharedWith should be empty');
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}
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} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
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if ($share->getSharedWith() === null) {
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throw new \InvalidArgumentException('SharedWith should not be empty');
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}
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} else {
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// We can't handle other types yet
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throw new \InvalidArgumentException('unkown share type');
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}
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// Verify the initiator of the share is set
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if ($share->getSharedBy() === null) {
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throw new \InvalidArgumentException('SharedBy should be set');
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}
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// Cannot share with yourself
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if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
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$share->getSharedWith() === $share->getSharedBy()) {
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throw new \InvalidArgumentException('Can\'t share with yourself');
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}
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// The path should be set
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if ($share->getNode() === null) {
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throw new \InvalidArgumentException('Path should be set');
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}
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// And it should be a file or a folder
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if (!($share->getNode() instanceof \OCP\Files\File) &&
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!($share->getNode() instanceof \OCP\Files\Folder)) {
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throw new \InvalidArgumentException('Path should be either a file or a folder');
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}
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// And you can't share your rootfolder
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if ($this->rootFolder->getUserFolder($share->getSharedBy())->getPath() === $share->getNode()->getPath()) {
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throw new \InvalidArgumentException('You can\'t share your root folder');
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}
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// Check if we actually have share permissions
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if (!$share->getNode()->isShareable()) {
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$message_t = $this->l->t('You are not allowed to share %s', [$share->getNode()->getPath()]);
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throw new GenericShareException($message_t, $message_t, 404);
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}
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// Permissions should be set
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if ($share->getPermissions() === null) {
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throw new \InvalidArgumentException('A share requires permissions');
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}
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/*
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* Quick fix for #23536
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* Non moveable mount points do not have update and delete permissions
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* while we 'most likely' do have that on the storage.
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*/
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$permissions = $share->getNode()->getPermissions();
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$mount = $share->getNode()->getMountPoint();
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if (!($mount instanceof MoveableMount)) {
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$permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
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}
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// Check that we do not share with more permissions than we have
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if ($share->getPermissions() & ~$permissions) {
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$message_t = $this->l->t('Cannot increase permissions of %s', [$share->getNode()->getPath()]);
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throw new GenericShareException($message_t, $message_t, 404);
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}
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// Check that read permissions are always set
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if (($share->getPermissions() & \OCP\Constants::PERMISSION_READ) === 0) {
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throw new \InvalidArgumentException('Shares need at least read permissions');
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}
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if ($share->getNode() instanceof \OCP\Files\File) {
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if ($share->getPermissions() & \OCP\Constants::PERMISSION_DELETE) {
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$message_t = $this->l->t('Files can\'t be shared with delete permissions');
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throw new GenericShareException($message_t);
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}
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if ($share->getPermissions() & \OCP\Constants::PERMISSION_CREATE) {
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$message_t = $this->l->t('Files can\'t be shared with create permissions');
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throw new GenericShareException($message_t);
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}
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}
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}
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/**
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* Validate if the expiration date fits the system settings
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*
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* @param \OCP\Share\IShare $share The share to validate the expiration date of
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* @return \OCP\Share\IShare The modified share object
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* @throws GenericShareException
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* @throws \InvalidArgumentException
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* @throws \Exception
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*/
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protected function validateExpirationDate(\OCP\Share\IShare $share) {
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$expirationDate = $share->getExpirationDate();
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if ($expirationDate !== null) {
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//Make sure the expiration date is a date
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$expirationDate->setTime(0, 0, 0);
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$date = new \DateTime();
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$date->setTime(0, 0, 0);
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if ($date >= $expirationDate) {
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$message = $this->l->t('Expiration date is in the past');
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throw new GenericShareException($message, $message, 404);
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}
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}
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// If expiredate is empty set a default one if there is a default
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$fullId = null;
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try {
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$fullId = $share->getFullId();
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} catch (\UnexpectedValueException $e) {
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// This is a new share
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}
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if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
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$expirationDate = new \DateTime();
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$expirationDate->setTime(0,0,0);
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$expirationDate->add(new \DateInterval('P'.$this->shareApiLinkDefaultExpireDays().'D'));
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}
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// If we enforce the expiration date check that is does not exceed
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if ($this->shareApiLinkDefaultExpireDateEnforced()) {
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if ($expirationDate === null) {
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throw new \InvalidArgumentException('Expiration date is enforced');
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}
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$date = new \DateTime();
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$date->setTime(0, 0, 0);
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$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
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if ($date < $expirationDate) {
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$message = $this->l->t('Cannot set expiration date more than %s days in the future', [$this->shareApiLinkDefaultExpireDays()]);
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throw new GenericShareException($message, $message, 404);
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}
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}
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$accepted = true;
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$message = '';
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\OCP\Util::emitHook('\OC\Share', 'verifyExpirationDate', [
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'expirationDate' => &$expirationDate,
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'accepted' => &$accepted,
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'message' => &$message,
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'passwordSet' => $share->getPassword() !== null,
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]);
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if (!$accepted) {
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throw new \Exception($message);
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}
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$share->setExpirationDate($expirationDate);
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return $share;
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}
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/**
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* Check for pre share requirements for user shares
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*
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* @param \OCP\Share\IShare $share
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* @throws \Exception
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*/
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protected function userCreateChecks(\OCP\Share\IShare $share) {
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// Check if we can share with group members only
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if ($this->shareWithGroupMembersOnly()) {
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$sharedBy = $this->userManager->get($share->getSharedBy());
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$sharedWith = $this->userManager->get($share->getSharedWith());
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// Verify we can share with this user
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$groups = array_intersect(
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$this->groupManager->getUserGroupIds($sharedBy),
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$this->groupManager->getUserGroupIds($sharedWith)
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);
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if (empty($groups)) {
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throw new \Exception('Only sharing with group members is allowed');
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}
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}
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/*
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* TODO: Could be costly, fix
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*
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* Also this is not what we want in the future.. then we want to squash identical shares.
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*/
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$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_USER);
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$existingShares = $provider->getSharesByPath($share->getNode());
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foreach($existingShares as $existingShare) {
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// Ignore if it is the same share
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try {
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if ($existingShare->getFullId() === $share->getFullId()) {
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continue;
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}
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} catch (\UnexpectedValueException $e) {
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//Shares are not identical
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}
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// Identical share already existst
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if ($existingShare->getSharedWith() === $share->getSharedWith()) {
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throw new \Exception('Path already shared with this user');
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}
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// The share is already shared with this user via a group share
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if ($existingShare->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
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$group = $this->groupManager->get($existingShare->getSharedWith());
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$user = $this->userManager->get($share->getSharedWith());
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if ($group->inGroup($user) && $existingShare->getShareOwner() !== $share->getShareOwner()) {
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throw new \Exception('Path already shared with this user');
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}
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}
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}
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}
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/**
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* Check for pre share requirements for group shares
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*
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* @param \OCP\Share\IShare $share
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* @throws \Exception
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*/
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protected function groupCreateChecks(\OCP\Share\IShare $share) {
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// Verify group shares are allowed
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if (!$this->allowGroupSharing()) {
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throw new \Exception('Group sharing is now allowed');
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}
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// Verify if the user can share with this group
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if ($this->shareWithGroupMembersOnly()) {
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$sharedBy = $this->userManager->get($share->getSharedBy());
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$sharedWith = $this->groupManager->get($share->getSharedWith());
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if (!$sharedWith->inGroup($sharedBy)) {
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throw new \Exception('Only sharing within your own groups is allowed');
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}
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}
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/*
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* TODO: Could be costly, fix
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*
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* Also this is not what we want in the future.. then we want to squash identical shares.
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*/
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$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_GROUP);
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$existingShares = $provider->getSharesByPath($share->getNode());
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foreach($existingShares as $existingShare) {
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try {
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if ($existingShare->getFullId() === $share->getFullId()) {
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continue;
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}
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} catch (\UnexpectedValueException $e) {
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//It is a new share so just continue
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}
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if ($existingShare->getSharedWith() === $share->getSharedWith()) {
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throw new \Exception('Path already shared with this group');
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}
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}
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}
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/**
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* Check for pre share requirements for link shares
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*
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* @param \OCP\Share\IShare $share
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* @throws \Exception
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*/
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protected function linkCreateChecks(\OCP\Share\IShare $share) {
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// Are link shares allowed?
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if (!$this->shareApiAllowLinks()) {
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throw new \Exception('Link sharing not allowed');
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}
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// Link shares by definition can't have share permissions
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if ($share->getPermissions() & \OCP\Constants::PERMISSION_SHARE) {
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throw new \InvalidArgumentException('Link shares can\'t have reshare permissions');
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}
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// We don't allow deletion on link shares
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if ($share->getPermissions() & \OCP\Constants::PERMISSION_DELETE) {
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throw new \InvalidArgumentException('Link shares can\'t have delete permissions');
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}
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// Check if public upload is allowed
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if (!$this->shareApiLinkAllowPublicUpload() &&
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($share->getPermissions() & (\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE))) {
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throw new \InvalidArgumentException('Public upload not allowed');
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}
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}
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/**
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* To make sure we don't get invisible link shares we set the parent
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* of a link if it is a reshare. This is a quick word around
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* until we can properly display multiple link shares in the UI
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*
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* See: https://github.com/owncloud/core/issues/22295
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*
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* FIXME: Remove once multiple link shares can be properly displayed
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*
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* @param \OCP\Share\IShare $share
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*/
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protected function setLinkParent(\OCP\Share\IShare $share) {
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// No sense in checking if the method is not there.
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if (method_exists($share, 'setParent')) {
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$storage = $share->getNode()->getStorage();
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if ($storage->instanceOfStorage('\OCA\Files_Sharing\ISharedStorage')) {
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$share->setParent($storage->getShareId());
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}
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};
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}
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/**
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* @param File|Folder $path
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*/
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protected function pathCreateChecks($path) {
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// Make sure that we do not share a path that contains a shared mountpoint
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if ($path instanceof \OCP\Files\Folder) {
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$mounts = $this->mountManager->findIn($path->getPath());
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foreach($mounts as $mount) {
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if ($mount->getStorage()->instanceOfStorage('\OCA\Files_Sharing\ISharedStorage')) {
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throw new \InvalidArgumentException('Path contains files shared with you');
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}
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}
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}
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}
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/**
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* Check if the user that is sharing can actually share
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*
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* @param \OCP\Share\IShare $share
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* @throws \Exception
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*/
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protected function canShare(\OCP\Share\IShare $share) {
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if (!$this->shareApiEnabled()) {
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throw new \Exception('The share API is disabled');
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}
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if ($this->sharingDisabledForUser($share->getSharedBy())) {
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throw new \Exception('You are not allowed to share');
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}
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}
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|
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/**
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* Share a path
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*
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* @param \OCP\Share\IShare $share
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* @return Share The share object
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* @throws \Exception
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*
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* TODO: handle link share permissions or check them
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*/
|
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public function createShare(\OCP\Share\IShare $share) {
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$this->canShare($share);
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$this->generalCreateChecks($share);
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|
// Verify if there are any issues with the path
|
|
$this->pathCreateChecks($share->getNode());
|
|
|
|
/*
|
|
* On creation of a share the owner is always the owner of the path
|
|
* Except for mounted federated shares.
|
|
*/
|
|
$storage = $share->getNode()->getStorage();
|
|
if ($storage->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
|
|
$parent = $share->getNode()->getParent();
|
|
while($parent->getStorage()->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
|
|
$parent = $parent->getParent();
|
|
}
|
|
$share->setShareOwner($parent->getOwner()->getUID());
|
|
} else {
|
|
$share->setShareOwner($share->getNode()->getOwner()->getUID());
|
|
}
|
|
|
|
//Verify share type
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
|
|
$this->userCreateChecks($share);
|
|
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
|
|
$this->groupCreateChecks($share);
|
|
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
|
|
$this->linkCreateChecks($share);
|
|
$this->setLinkParent($share);
|
|
|
|
/*
|
|
* For now ignore a set token.
|
|
*/
|
|
$share->setToken(
|
|
$this->secureRandom->generate(
|
|
\OC\Share\Constants::TOKEN_LENGTH,
|
|
\OCP\Security\ISecureRandom::CHAR_LOWER.
|
|
\OCP\Security\ISecureRandom::CHAR_UPPER.
|
|
\OCP\Security\ISecureRandom::CHAR_DIGITS
|
|
)
|
|
);
|
|
|
|
//Verify the expiration date
|
|
$this->validateExpirationDate($share);
|
|
|
|
//Verify the password
|
|
$this->verifyPassword($share->getPassword());
|
|
|
|
// If a password is set. Hash it!
|
|
if ($share->getPassword() !== null) {
|
|
$share->setPassword($this->hasher->hash($share->getPassword()));
|
|
}
|
|
}
|
|
|
|
// Cannot share with the owner
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
|
|
$share->getSharedWith() === $share->getShareOwner()) {
|
|
throw new \InvalidArgumentException('Can\'t share with the share owner');
|
|
}
|
|
|
|
// Generate the target
|
|
$target = $this->config->getSystemValue('share_folder', '/') .'/'. $share->getNode()->getName();
|
|
$target = \OC\Files\Filesystem::normalizePath($target);
|
|
$share->setTarget($target);
|
|
|
|
// Pre share hook
|
|
$run = true;
|
|
$error = '';
|
|
$preHookData = [
|
|
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
|
|
'itemSource' => $share->getNode()->getId(),
|
|
'shareType' => $share->getShareType(),
|
|
'uidOwner' => $share->getSharedBy(),
|
|
'permissions' => $share->getPermissions(),
|
|
'fileSource' => $share->getNode()->getId(),
|
|
'expiration' => $share->getExpirationDate(),
|
|
'token' => $share->getToken(),
|
|
'itemTarget' => $share->getTarget(),
|
|
'shareWith' => $share->getSharedWith(),
|
|
'run' => &$run,
|
|
'error' => &$error,
|
|
];
|
|
\OC_Hook::emit('OCP\Share', 'pre_shared', $preHookData);
|
|
|
|
if ($run === false) {
|
|
throw new \Exception($error);
|
|
}
|
|
|
|
$provider = $this->factory->getProviderForType($share->getShareType());
|
|
$share = $provider->create($share);
|
|
|
|
// Post share hook
|
|
$postHookData = [
|
|
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
|
|
'itemSource' => $share->getNode()->getId(),
|
|
'shareType' => $share->getShareType(),
|
|
'uidOwner' => $share->getSharedBy(),
|
|
'permissions' => $share->getPermissions(),
|
|
'fileSource' => $share->getNode()->getId(),
|
|
'expiration' => $share->getExpirationDate(),
|
|
'token' => $share->getToken(),
|
|
'id' => $share->getId(),
|
|
'shareWith' => $share->getSharedWith(),
|
|
'itemTarget' => $share->getTarget(),
|
|
'fileTarget' => $share->getTarget(),
|
|
];
|
|
|
|
\OC_Hook::emit('OCP\Share', 'post_shared', $postHookData);
|
|
|
|
return $share;
|
|
}
|
|
|
|
/**
|
|
* Update a share
|
|
*
|
|
* @param \OCP\Share\IShare $share
|
|
* @return \OCP\Share\IShare The share object
|
|
* @throws \InvalidArgumentException
|
|
*/
|
|
public function updateShare(\OCP\Share\IShare $share) {
|
|
$expirationDateUpdated = false;
|
|
|
|
$this->canShare($share);
|
|
|
|
try {
|
|
$originalShare = $this->getShareById($share->getFullId());
|
|
} catch (\UnexpectedValueException $e) {
|
|
throw new \InvalidArgumentException('Share does not have a full id');
|
|
}
|
|
|
|
// We can't change the share type!
|
|
if ($share->getShareType() !== $originalShare->getShareType()) {
|
|
throw new \InvalidArgumentException('Can\'t change share type');
|
|
}
|
|
|
|
// We can only change the recipient on user shares
|
|
if ($share->getSharedWith() !== $originalShare->getSharedWith() &&
|
|
$share->getShareType() !== \OCP\Share::SHARE_TYPE_USER) {
|
|
throw new \InvalidArgumentException('Can only update recipient on user shares');
|
|
}
|
|
|
|
// Cannot share with the owner
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
|
|
$share->getSharedWith() === $share->getShareOwner()) {
|
|
throw new \InvalidArgumentException('Can\'t share with the share owner');
|
|
}
|
|
|
|
$this->generalCreateChecks($share);
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
|
|
$this->userCreateChecks($share);
|
|
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
|
|
$this->groupCreateChecks($share);
|
|
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
|
|
$this->linkCreateChecks($share);
|
|
|
|
// Password updated.
|
|
if ($share->getPassword() !== $originalShare->getPassword()) {
|
|
//Verify the password
|
|
$this->verifyPassword($share->getPassword());
|
|
|
|
// If a password is set. Hash it!
|
|
if ($share->getPassword() !== null) {
|
|
$share->setPassword($this->hasher->hash($share->getPassword()));
|
|
}
|
|
}
|
|
|
|
if ($share->getExpirationDate() != $originalShare->getExpirationDate()) {
|
|
//Verify the expiration date
|
|
$this->validateExpirationDate($share);
|
|
$expirationDateUpdated = true;
|
|
}
|
|
}
|
|
|
|
$this->pathCreateChecks($share->getNode());
|
|
|
|
// Now update the share!
|
|
$provider = $this->factory->getProviderForType($share->getShareType());
|
|
$share = $provider->update($share);
|
|
|
|
if ($expirationDateUpdated === true) {
|
|
\OC_Hook::emit('OCP\Share', 'post_set_expiration_date', [
|
|
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
|
|
'itemSource' => $share->getNode()->getId(),
|
|
'date' => $share->getExpirationDate(),
|
|
'uidOwner' => $share->getSharedBy(),
|
|
]);
|
|
}
|
|
|
|
if ($share->getPassword() !== $originalShare->getPassword()) {
|
|
\OC_Hook::emit('OCP\Share', 'post_update_password', [
|
|
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
|
|
'itemSource' => $share->getNode()->getId(),
|
|
'uidOwner' => $share->getSharedBy(),
|
|
'token' => $share->getToken(),
|
|
'disabled' => is_null($share->getPassword()),
|
|
]);
|
|
}
|
|
|
|
if ($share->getPermissions() !== $originalShare->getPermissions()) {
|
|
$userFolder = $this->rootFolder->getUserFolder($share->getShareOwner());
|
|
\OC_Hook::emit('OCP\Share', 'post_update_permissions', array(
|
|
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
|
|
'itemSource' => $share->getNode()->getId(),
|
|
'shareType' => $share->getShareType(),
|
|
'shareWith' => $share->getSharedWith(),
|
|
'uidOwner' => $share->getSharedBy(),
|
|
'permissions' => $share->getPermissions(),
|
|
'path' => $userFolder->getRelativePath($share->getNode()->getPath()),
|
|
));
|
|
}
|
|
|
|
return $share;
|
|
}
|
|
|
|
/**
|
|
* Delete all the children of this share
|
|
* FIXME: remove once https://github.com/owncloud/core/pull/21660 is in
|
|
*
|
|
* @param \OCP\Share\IShare $share
|
|
* @return \OCP\Share\IShare[] List of deleted shares
|
|
*/
|
|
protected function deleteChildren(\OCP\Share\IShare $share) {
|
|
$deletedShares = [];
|
|
|
|
$provider = $this->factory->getProviderForType($share->getShareType());
|
|
|
|
foreach ($provider->getChildren($share) as $child) {
|
|
$deletedChildren = $this->deleteChildren($child);
|
|
$deletedShares = array_merge($deletedShares, $deletedChildren);
|
|
|
|
$provider->delete($child);
|
|
$deletedShares[] = $child;
|
|
}
|
|
|
|
return $deletedShares;
|
|
}
|
|
|
|
/**
|
|
* Delete a share
|
|
*
|
|
* @param \OCP\Share\IShare $share
|
|
* @throws ShareNotFound
|
|
* @throws \InvalidArgumentException
|
|
*/
|
|
public function deleteShare(\OCP\Share\IShare $share) {
|
|
|
|
try {
|
|
$share->getFullId();
|
|
} catch (\UnexpectedValueException $e) {
|
|
throw new \InvalidArgumentException('Share does not have a full id');
|
|
}
|
|
|
|
$formatHookParams = function(\OCP\Share\IShare $share) {
|
|
// Prepare hook
|
|
$shareType = $share->getShareType();
|
|
$sharedWith = '';
|
|
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
|
|
$sharedWith = $share->getSharedWith();
|
|
} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
|
|
$sharedWith = $share->getSharedWith();
|
|
} else if ($shareType === \OCP\Share::SHARE_TYPE_REMOTE) {
|
|
$sharedWith = $share->getSharedWith();
|
|
}
|
|
|
|
$hookParams = [
|
|
'id' => $share->getId(),
|
|
'itemType' => $share->getNodeType(),
|
|
'itemSource' => $share->getNodeId(),
|
|
'shareType' => $shareType,
|
|
'shareWith' => $sharedWith,
|
|
'itemparent' => method_exists($share, 'getParent') ? $share->getParent() : '',
|
|
'uidOwner' => $share->getSharedBy(),
|
|
'fileSource' => $share->getNodeId(),
|
|
'fileTarget' => $share->getTarget()
|
|
];
|
|
return $hookParams;
|
|
};
|
|
|
|
$hookParams = $formatHookParams($share);
|
|
|
|
// Emit pre-hook
|
|
\OC_Hook::emit('OCP\Share', 'pre_unshare', $hookParams);
|
|
|
|
// Get all children and delete them as well
|
|
$deletedShares = $this->deleteChildren($share);
|
|
|
|
// Do the actual delete
|
|
$provider = $this->factory->getProviderForType($share->getShareType());
|
|
$provider->delete($share);
|
|
|
|
// All the deleted shares caused by this delete
|
|
$deletedShares[] = $share;
|
|
|
|
//Format hook info
|
|
$formattedDeletedShares = array_map(function($share) use ($formatHookParams) {
|
|
return $formatHookParams($share);
|
|
}, $deletedShares);
|
|
|
|
$hookParams['deletedShares'] = $formattedDeletedShares;
|
|
|
|
// Emit post hook
|
|
\OC_Hook::emit('OCP\Share', 'post_unshare', $hookParams);
|
|
}
|
|
|
|
|
|
/**
|
|
* Unshare a file as the recipient.
|
|
* This can be different from a regular delete for example when one of
|
|
* the users in a groups deletes that share. But the provider should
|
|
* handle this.
|
|
*
|
|
* @param \OCP\Share\IShare $share
|
|
* @param string $recipientId
|
|
*/
|
|
public function deleteFromSelf(\OCP\Share\IShare $share, $recipientId) {
|
|
list($providerId, ) = $this->splitFullId($share->getFullId());
|
|
$provider = $this->factory->getProvider($providerId);
|
|
|
|
$provider->deleteFromSelf($share, $recipientId);
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function moveShare(\OCP\Share\IShare $share, $recipientId) {
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
|
|
throw new \InvalidArgumentException('Can\'t change target of link share');
|
|
}
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER && $share->getSharedWith() !== $recipientId) {
|
|
throw new \InvalidArgumentException('Invalid recipient');
|
|
}
|
|
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
|
|
$sharedWith = $this->groupManager->get($share->getSharedWith());
|
|
$recipient = $this->userManager->get($recipientId);
|
|
if (!$sharedWith->inGroup($recipient)) {
|
|
throw new \InvalidArgumentException('Invalid recipient');
|
|
}
|
|
}
|
|
|
|
list($providerId, ) = $this->splitFullId($share->getFullId());
|
|
$provider = $this->factory->getProvider($providerId);
|
|
|
|
$provider->move($share, $recipientId);
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function getSharesBy($userId, $shareType, $path = null, $reshares = false, $limit = 50, $offset = 0) {
|
|
if ($path !== null &&
|
|
!($path instanceof \OCP\Files\File) &&
|
|
!($path instanceof \OCP\Files\Folder)) {
|
|
throw new \InvalidArgumentException('invalid path');
|
|
}
|
|
|
|
$provider = $this->factory->getProviderForType($shareType);
|
|
|
|
$shares = $provider->getSharesBy($userId, $shareType, $path, $reshares, $limit, $offset);
|
|
|
|
/*
|
|
* Work around so we don't return expired shares but still follow
|
|
* proper pagination.
|
|
*/
|
|
if ($shareType === \OCP\Share::SHARE_TYPE_LINK) {
|
|
$shares2 = [];
|
|
$today = new \DateTime();
|
|
|
|
while(true) {
|
|
$added = 0;
|
|
foreach ($shares as $share) {
|
|
// Check if the share is expired and if so delete it
|
|
if ($share->getExpirationDate() !== null &&
|
|
$share->getExpirationDate() <= $today
|
|
) {
|
|
try {
|
|
$this->deleteShare($share);
|
|
} catch (NotFoundException $e) {
|
|
//Ignore since this basically means the share is deleted
|
|
}
|
|
continue;
|
|
}
|
|
$added++;
|
|
$shares2[] = $share;
|
|
|
|
if (count($shares2) === $limit) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (count($shares2) === $limit) {
|
|
break;
|
|
}
|
|
|
|
// If there was no limit on the select we are done
|
|
if ($limit === -1) {
|
|
break;
|
|
}
|
|
|
|
$offset += $added;
|
|
|
|
// Fetch again $limit shares
|
|
$shares = $provider->getSharesBy($userId, $shareType, $path, $reshares, $limit, $offset);
|
|
|
|
// No more shares means we are done
|
|
if (empty($shares)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
$shares = $shares2;
|
|
}
|
|
|
|
return $shares;
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function getSharedWith($userId, $shareType, $node = null, $limit = 50, $offset = 0) {
|
|
$provider = $this->factory->getProviderForType($shareType);
|
|
|
|
return $provider->getSharedWith($userId, $shareType, $node, $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function getShareById($id, $recipient = null) {
|
|
if ($id === null) {
|
|
throw new ShareNotFound();
|
|
}
|
|
|
|
list($providerId, $id) = $this->splitFullId($id);
|
|
$provider = $this->factory->getProvider($providerId);
|
|
|
|
$share = $provider->getShareById($id, $recipient);
|
|
|
|
// Validate link shares expiration date
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK &&
|
|
$share->getExpirationDate() !== null &&
|
|
$share->getExpirationDate() <= new \DateTime()) {
|
|
$this->deleteShare($share);
|
|
throw new ShareNotFound();
|
|
}
|
|
|
|
return $share;
|
|
}
|
|
|
|
/**
|
|
* Get all the shares for a given path
|
|
*
|
|
* @param \OCP\Files\Node $path
|
|
* @param int $page
|
|
* @param int $perPage
|
|
*
|
|
* @return Share[]
|
|
*/
|
|
public function getSharesByPath(\OCP\Files\Node $path, $page=0, $perPage=50) {
|
|
}
|
|
|
|
/**
|
|
* Get the share by token possible with password
|
|
*
|
|
* @param string $token
|
|
* @return Share
|
|
*
|
|
* @throws ShareNotFound
|
|
*/
|
|
public function getShareByToken($token) {
|
|
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_LINK);
|
|
|
|
try {
|
|
$share = $provider->getShareByToken($token);
|
|
} catch (ShareNotFound $e) {
|
|
$share = null;
|
|
}
|
|
|
|
// If it is not a link share try to fetch a federated share by token
|
|
if ($share === null) {
|
|
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_REMOTE);
|
|
$share = $provider->getShareByToken($token);
|
|
}
|
|
|
|
if ($share->getExpirationDate() !== null &&
|
|
$share->getExpirationDate() <= new \DateTime()) {
|
|
$this->deleteShare($share);
|
|
throw new ShareNotFound();
|
|
}
|
|
|
|
/*
|
|
* Reduce the permissions for link shares if public upload is not enabled
|
|
*/
|
|
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK &&
|
|
!$this->shareApiLinkAllowPublicUpload()) {
|
|
$share->setPermissions($share->getPermissions() & ~(\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE));
|
|
}
|
|
|
|
return $share;
|
|
}
|
|
|
|
/**
|
|
* Verify the password of a public share
|
|
*
|
|
* @param \OCP\Share\IShare $share
|
|
* @param string $password
|
|
* @return bool
|
|
*/
|
|
public function checkPassword(\OCP\Share\IShare $share, $password) {
|
|
if ($share->getShareType() !== \OCP\Share::SHARE_TYPE_LINK) {
|
|
//TODO maybe exception?
|
|
return false;
|
|
}
|
|
|
|
if ($password === null || $share->getPassword() === null) {
|
|
return false;
|
|
}
|
|
|
|
$newHash = '';
|
|
if (!$this->hasher->verify($password, $share->getPassword(), $newHash)) {
|
|
return false;
|
|
}
|
|
|
|
if (!empty($newHash)) {
|
|
$share->setPassword($newHash);
|
|
$provider = $this->factory->getProviderForType($share->getShareType());
|
|
$provider->update($share);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function userDeleted($uid) {
|
|
$types = [\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP, \OCP\Share::SHARE_TYPE_LINK, \OCP\Share::SHARE_TYPE_REMOTE];
|
|
|
|
foreach ($types as $type) {
|
|
$provider = $this->factory->getProviderForType($type);
|
|
$provider->userDeleted($uid, $type);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function groupDeleted($gid) {
|
|
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_GROUP);
|
|
$provider->groupDeleted($gid);
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function userDeletedFromGroup($uid, $gid) {
|
|
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_GROUP);
|
|
$provider->userDeletedFromGroup($uid, $gid);
|
|
}
|
|
|
|
/**
|
|
* Get access list to a path. This means
|
|
* all the users and groups that can access a given path.
|
|
*
|
|
* Consider:
|
|
* -root
|
|
* |-folder1
|
|
* |-folder2
|
|
* |-fileA
|
|
*
|
|
* fileA is shared with user1
|
|
* folder2 is shared with group2
|
|
* folder1 is shared with user2
|
|
*
|
|
* Then the access list will to '/folder1/folder2/fileA' is:
|
|
* [
|
|
* 'users' => ['user1', 'user2'],
|
|
* 'groups' => ['group2']
|
|
* ]
|
|
*
|
|
* This is required for encryption
|
|
*
|
|
* @param \OCP\Files\Node $path
|
|
*/
|
|
public function getAccessList(\OCP\Files\Node $path) {
|
|
}
|
|
|
|
/**
|
|
* Create a new share
|
|
* @return \OCP\Share\IShare;
|
|
*/
|
|
public function newShare() {
|
|
return new \OC\Share20\Share($this->rootFolder);
|
|
}
|
|
|
|
/**
|
|
* Is the share API enabled
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function shareApiEnabled() {
|
|
return $this->config->getAppValue('core', 'shareapi_enabled', 'yes') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Is public link sharing enabled
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function shareApiAllowLinks() {
|
|
return $this->config->getAppValue('core', 'shareapi_allow_links', 'yes') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Is password on public link requires
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function shareApiLinkEnforcePassword() {
|
|
return $this->config->getAppValue('core', 'shareapi_enforce_links_password', 'no') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Is default expire date enabled
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function shareApiLinkDefaultExpireDate() {
|
|
return $this->config->getAppValue('core', 'shareapi_default_expire_date', 'no') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Is default expire date enforced
|
|
*`
|
|
* @return bool
|
|
*/
|
|
public function shareApiLinkDefaultExpireDateEnforced() {
|
|
return $this->shareApiLinkDefaultExpireDate() &&
|
|
$this->config->getAppValue('core', 'shareapi_enforce_expire_date', 'no') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Number of default expire days
|
|
*shareApiLinkAllowPublicUpload
|
|
* @return int
|
|
*/
|
|
public function shareApiLinkDefaultExpireDays() {
|
|
return (int)$this->config->getAppValue('core', 'shareapi_expire_after_n_days', '7');
|
|
}
|
|
|
|
/**
|
|
* Allow public upload on link shares
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function shareApiLinkAllowPublicUpload() {
|
|
return $this->config->getAppValue('core', 'shareapi_allow_public_upload', 'yes') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* check if user can only share with group members
|
|
* @return bool
|
|
*/
|
|
public function shareWithGroupMembersOnly() {
|
|
return $this->config->getAppValue('core', 'shareapi_only_share_with_group_members', 'no') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Check if users can share with groups
|
|
* @return bool
|
|
*/
|
|
public function allowGroupSharing() {
|
|
return $this->config->getAppValue('core', 'shareapi_allow_group_sharing', 'yes') === 'yes';
|
|
}
|
|
|
|
/**
|
|
* Copied from \OC_Util::isSharingDisabledForUser
|
|
*
|
|
* TODO: Deprecate fuction from OC_Util
|
|
*
|
|
* @param string $userId
|
|
* @return bool
|
|
*/
|
|
public function sharingDisabledForUser($userId) {
|
|
if ($this->config->getAppValue('core', 'shareapi_exclude_groups', 'no') === 'yes') {
|
|
$groupsList = $this->config->getAppValue('core', 'shareapi_exclude_groups_list', '');
|
|
$excludedGroups = json_decode($groupsList);
|
|
if (is_null($excludedGroups)) {
|
|
$excludedGroups = explode(',', $groupsList);
|
|
$newValue = json_encode($excludedGroups);
|
|
$this->config->setAppValue('core', 'shareapi_exclude_groups_list', $newValue);
|
|
}
|
|
$user = $this->userManager->get($userId);
|
|
$usersGroups = $this->groupManager->getUserGroupIds($user);
|
|
if (!empty($usersGroups)) {
|
|
$remainingGroups = array_diff($usersGroups, $excludedGroups);
|
|
// if the user is only in groups which are disabled for sharing then
|
|
// sharing is also disabled for the user
|
|
if (empty($remainingGroups)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function outgoingServer2ServerSharesAllowed() {
|
|
return $this->config->getAppValue('files_sharing', 'outgoing_server2server_share_enabled', 'yes') === 'yes';
|
|
}
|
|
|
|
}
|