1697 lines
63 KiB
PHP
1697 lines
63 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Bjoern Schiessle, Michael Gapczynski
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* @copyright 2012 Michael Gapczynski <mtgap@owncloud.com>
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* 2014 Bjoern Schiessle <schiessle@owncloud.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OC\Share;
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/**
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* This class provides the ability for apps to share their content between users.
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* Apps must create a backend class that implements OCP\Share_Backend and register it with this class.
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*
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* It provides the following hooks:
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* - post_shared
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*/
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class Share extends \OC\Share\Constants {
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/** CRUDS permissions (Create, Read, Update, Delete, Share) using a bitmask
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* Construct permissions for share() and setPermissions with Or (|) e.g.
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* Give user read and update permissions: PERMISSION_READ | PERMISSION_UPDATE
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*
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* Check if permission is granted with And (&) e.g. Check if delete is
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* granted: if ($permissions & PERMISSION_DELETE)
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*
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* Remove permissions with And (&) and Not (~) e.g. Remove the update
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* permission: $permissions &= ~PERMISSION_UPDATE
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*
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* Apps are required to handle permissions on their own, this class only
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* stores and manages the permissions of shares
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* @see lib/public/constants.php
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*/
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/**
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* Register a sharing backend class that implements OCP\Share_Backend for an item type
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* @param string Item type
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* @param string Backend class
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* @param string (optional) Depends on item type
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* @param array (optional) List of supported file extensions if this item type depends on files
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* @return Returns true if backend is registered or false if error
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*/
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public static function registerBackend($itemType, $class, $collectionOf = null, $supportedFileExtensions = null) {
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if (self::isEnabled()) {
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if (!isset(self::$backendTypes[$itemType])) {
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self::$backendTypes[$itemType] = array(
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'class' => $class,
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'collectionOf' => $collectionOf,
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'supportedFileExtensions' => $supportedFileExtensions
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);
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if(count(self::$backendTypes) === 1) {
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\OC_Util::addScript('core', 'share');
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\OC_Util::addStyle('core', 'share');
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}
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return true;
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}
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\OC_Log::write('OCP\Share',
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'Sharing backend '.$class.' not registered, '.self::$backendTypes[$itemType]['class']
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.' is already registered for '.$itemType,
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\OC_Log::WARN);
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}
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return false;
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}
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/**
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* Check if the Share API is enabled
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* @return Returns true if enabled or false
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*
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* The Share API is enabled by default if not configured
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*/
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public static function isEnabled() {
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if (\OC_Appconfig::getValue('core', 'shareapi_enabled', 'yes') == 'yes') {
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return true;
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}
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return false;
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}
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/**
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* Find which users can access a shared item
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* @param string $path to the file
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* @param string $ownerUser owner of the file
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* @param bool $includeOwner include owner to the list of users with access to the file
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* @param bool $returnUserPaths Return an array with the user => path map
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* @return array
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* @note $path needs to be relative to user data dir, e.g. 'file.txt'
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* not '/admin/data/file.txt'
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*/
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public static function getUsersSharingFile($path, $ownerUser, $includeOwner = false, $returnUserPaths = false) {
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$shares = $sharePaths = $fileTargets = array();
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$publicShare = false;
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$source = -1;
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$cache = false;
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$view = new \OC\Files\View('/' . $ownerUser . '/files');
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if ($view->file_exists($path)) {
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$meta = $view->getFileInfo($path);
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$path = substr($meta->getPath(), strlen('/' . $ownerUser . '/files'));
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} else {
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// if the file doesn't exists yet we start with the parent folder
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$meta = $view->getFileInfo(dirname($path));
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}
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if($meta !== false) {
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$source = $meta['fileid'];
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$cache = new \OC\Files\Cache\Cache($meta['storage']);
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}
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while ($source !== -1) {
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// Fetch all shares with another user
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$query = \OC_DB::prepare(
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'SELECT `share_with`, `file_source`, `file_target`
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FROM
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`*PREFIX*share`
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WHERE
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`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
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);
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$result = $query->execute(array($source, self::SHARE_TYPE_USER));
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if (\OCP\DB::isError($result)) {
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\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
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} else {
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while ($row = $result->fetchRow()) {
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$shares[] = $row['share_with'];
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if ($returnUserPaths) {
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$fileTargets[(int) $row['file_source']][$row['share_with']] = $row;
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}
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}
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}
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// We also need to take group shares into account
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$query = \OC_DB::prepare(
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'SELECT `share_with`, `file_source`, `file_target`
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FROM
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`*PREFIX*share`
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WHERE
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`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
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);
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$result = $query->execute(array($source, self::SHARE_TYPE_GROUP));
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if (\OCP\DB::isError($result)) {
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\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
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} else {
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while ($row = $result->fetchRow()) {
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$usersInGroup = \OC_Group::usersInGroup($row['share_with']);
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$shares = array_merge($shares, $usersInGroup);
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if ($returnUserPaths) {
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foreach ($usersInGroup as $user) {
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$fileTargets[(int) $row['file_source']][$user] = $row;
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}
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}
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}
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}
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//check for public link shares
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if (!$publicShare) {
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$query = \OC_DB::prepare(
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'SELECT `share_with`
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FROM
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`*PREFIX*share`
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WHERE
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`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
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);
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$result = $query->execute(array($source, self::SHARE_TYPE_LINK));
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if (\OCP\DB::isError($result)) {
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\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
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} else {
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if ($result->fetchRow()) {
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$publicShare = true;
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}
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}
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}
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// let's get the parent for the next round
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$meta = $cache->get((int)$source);
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if($meta !== false) {
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$source = (int)$meta['parent'];
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} else {
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$source = -1;
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}
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}
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// Include owner in list of users, if requested
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if ($includeOwner) {
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$shares[] = $ownerUser;
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if ($returnUserPaths) {
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$sharePaths[$ownerUser] = $path;
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}
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}
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if ($returnUserPaths) {
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$fileTargetIDs = array_keys($fileTargets);
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$fileTargetIDs = array_unique($fileTargetIDs);
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if (!empty($fileTargetIDs)) {
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$query = \OC_DB::prepare(
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'SELECT `fileid`, `path`
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FROM `*PREFIX*filecache`
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WHERE `fileid` IN (' . implode(',', $fileTargetIDs) . ')'
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);
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$result = $query->execute();
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if (\OCP\DB::isError($result)) {
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\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
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} else {
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while ($row = $result->fetchRow()) {
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foreach ($fileTargets[$row['fileid']] as $uid => $shareData) {
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$sharedPath = '/Shared' . $shareData['file_target'];
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$sharedPath .= substr($path, strlen($row['path']) -5);
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$sharePaths[$uid] = $sharedPath;
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}
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}
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}
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}
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return $sharePaths;
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}
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return array("users" => array_unique($shares), "public" => $publicShare);
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}
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/**
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* Get the items of item type shared with the current user
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* @param string Item type
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* @param int Format (optional) Format type must be defined by the backend
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* @param mixed Parameters (optional)
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* @param int Number of items to return (optional) Returns all by default
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* @param bool include collections (optional)
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* @return Return depends on format
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*/
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public static function getItemsSharedWith($itemType, $format = self::FORMAT_NONE,
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$parameters = null, $limit = -1, $includeCollections = false) {
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return self::getItems($itemType, null, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
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$parameters, $limit, $includeCollections);
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}
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/**
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* Get the item of item type shared with the current user
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* @param string $itemType
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* @param string $itemTarget
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* @param int $format (optional) Format type must be defined by the backend
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* @param mixed Parameters (optional)
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* @param bool include collections (optional)
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* @return Return depends on format
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*/
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public static function getItemSharedWith($itemType, $itemTarget, $format = self::FORMAT_NONE,
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$parameters = null, $includeCollections = false) {
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return self::getItems($itemType, $itemTarget, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
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$parameters, 1, $includeCollections);
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}
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/**
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* Get the item of item type shared with a given user by source
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* @param string $itemType
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* @param string $itemSource
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* @param string $user User user to whom the item was shared
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* @return array Return list of items with file_target, permissions and expiration
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*/
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public static function getItemSharedWithUser($itemType, $itemSource, $user) {
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$shares = array();
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// first check if there is a db entry for the specific user
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$query = \OC_DB::prepare(
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'SELECT `file_target`, `permissions`, `expiration`
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FROM
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`*PREFIX*share`
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WHERE
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`item_source` = ? AND `item_type` = ? AND `share_with` = ?'
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);
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$result = \OC_DB::executeAudited($query, array($itemSource, $itemType, $user));
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while ($row = $result->fetchRow()) {
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$shares[] = $row;
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}
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//if didn't found a result than let's look for a group share.
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if(empty($shares)) {
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$groups = \OC_Group::getUserGroups($user);
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$query = \OC_DB::prepare(
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'SELECT `file_target`, `permissions`, `expiration`
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FROM
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`*PREFIX*share`
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WHERE
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`item_source` = ? AND `item_type` = ? AND `share_with` in (?)'
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);
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$result = \OC_DB::executeAudited($query, array($itemSource, $itemType, implode(',', $groups)));
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while ($row = $result->fetchRow()) {
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$shares[] = $row;
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}
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}
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return $shares;
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}
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/**
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* Get the item of item type shared with the current user by source
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* @param string Item type
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* @param string Item source
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* @param int Format (optional) Format type must be defined by the backend
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* @param mixed Parameters
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* @param bool include collections
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* @return Return depends on format
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*/
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public static function getItemSharedWithBySource($itemType, $itemSource, $format = self::FORMAT_NONE,
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$parameters = null, $includeCollections = false) {
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return self::getItems($itemType, $itemSource, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
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$parameters, 1, $includeCollections, true);
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}
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/**
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* Get the item of item type shared by a link
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* @param string Item type
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* @param string Item source
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* @param string Owner of link
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* @return Item
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*/
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public static function getItemSharedWithByLink($itemType, $itemSource, $uidOwner) {
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return self::getItems($itemType, $itemSource, self::SHARE_TYPE_LINK, null, $uidOwner, self::FORMAT_NONE,
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null, 1);
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}
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/**
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* Based on the given token the share information will be returned - password protected shares will be verified
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* @param string $token
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* @return array | bool false will be returned in case the token is unknown or unauthorized
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*/
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public static function getShareByToken($token, $checkPasswordProtection = true) {
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$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share` WHERE `token` = ?', 1);
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$result = $query->execute(array($token));
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if (\OC_DB::isError($result)) {
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\OC_Log::write('OCP\Share', \OC_DB::getErrorMessage($result) . ', token=' . $token, \OC_Log::ERROR);
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}
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$row = $result->fetchRow();
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if ($row === false) {
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return false;
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}
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if (is_array($row) and self::expireItem($row)) {
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return false;
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}
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// password protected shares need to be authenticated
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if ($checkPasswordProtection && !\OCP\Share::checkPasswordProtectedShare($row)) {
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return false;
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}
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return $row;
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}
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/**
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* resolves reshares down to the last real share
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* @param $linkItem
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* @return $fileOwner
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*/
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public static function resolveReShare($linkItem)
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{
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if (isset($linkItem['parent'])) {
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$parent = $linkItem['parent'];
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while (isset($parent)) {
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$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share` WHERE `id` = ?', 1);
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$item = $query->execute(array($parent))->fetchRow();
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if (isset($item['parent'])) {
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$parent = $item['parent'];
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} else {
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return $item;
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}
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}
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}
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return $linkItem;
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}
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/**
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* Get the shared items of item type owned by the current user
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* @param string Item type
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* @param int Format (optional) Format type must be defined by the backend
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* @param mixed Parameters
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* @param int Number of items to return (optional) Returns all by default
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* @param bool include collections
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* @return Return depends on format
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*/
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public static function getItemsShared($itemType, $format = self::FORMAT_NONE, $parameters = null,
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$limit = -1, $includeCollections = false) {
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return self::getItems($itemType, null, null, null, \OC_User::getUser(), $format,
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$parameters, $limit, $includeCollections);
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}
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/**
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* Get the shared item of item type owned by the current user
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* @param string Item type
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* @param string Item source
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* @param int Format (optional) Format type must be defined by the backend
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* @param mixed Parameters
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* @param bool include collections
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* @return Return depends on format
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*/
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public static function getItemShared($itemType, $itemSource, $format = self::FORMAT_NONE,
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$parameters = null, $includeCollections = false) {
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return self::getItems($itemType, $itemSource, null, null, \OC_User::getUser(), $format,
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$parameters, -1, $includeCollections);
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}
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/**
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* Get all users an item is shared with
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* @param string Item type
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* @param string Item source
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* @param string Owner
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* @param bool Include collections
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* @praram bool check expire date
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* @return Return array of users
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*/
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public static function getUsersItemShared($itemType, $itemSource, $uidOwner, $includeCollections = false, $checkExpireDate = true) {
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$users = array();
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$items = self::getItems($itemType, $itemSource, null, null, $uidOwner, self::FORMAT_NONE, null, -1, $includeCollections, false, $checkExpireDate);
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if ($items) {
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foreach ($items as $item) {
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if ((int)$item['share_type'] === self::SHARE_TYPE_USER) {
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$users[] = $item['share_with'];
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} else if ((int)$item['share_type'] === self::SHARE_TYPE_GROUP) {
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$users = array_merge($users, \OC_Group::usersInGroup($item['share_with']));
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}
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}
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}
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return $users;
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}
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|
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/**
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* Share an item with a user, group, or via private link
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* @param string $itemType
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* @param string $itemSource
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* @param int $shareType SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
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* @param string $shareWith User or group the item is being shared with
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* @param int $permissions CRUDS
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* @param null $itemSourceName
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* @throws \Exception
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* @internal param \OCP\Item $string type
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* @internal param \OCP\Item $string source
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* @internal param \OCP\SHARE_TYPE_USER $int , SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
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* @internal param \OCP\User $string or group the item is being shared with
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* @internal param \OCP\CRUDS $int permissions
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* @return bool|string Returns true on success or false on failure, Returns token on success for links
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*/
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public static function shareItem($itemType, $itemSource, $shareType, $shareWith, $permissions, $itemSourceName = null) {
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$uidOwner = \OC_User::getUser();
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$sharingPolicy = \OC_Appconfig::getValue('core', 'shareapi_share_policy', 'global');
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$l = \OC_L10N::get('lib');
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if (is_null($itemSourceName)) {
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$itemSourceName = $itemSource;
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}
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// verify that the file exists before we try to share it
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if ($itemType === 'file' or $itemType === 'folder') {
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$path = \OC\Files\Filesystem::getPath($itemSource);
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if (!$path) {
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$message = 'Sharing ' . $itemSourceName . ' failed, because the file does not exist';
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\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
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throw new \Exception($message);
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}
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}
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|
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// Verify share type and sharing conditions are met
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if ($shareType === self::SHARE_TYPE_USER) {
|
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if ($shareWith == $uidOwner) {
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$message = 'Sharing %s failed, because the user %s is the item owner';
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$message_t = $l->t('Sharing %s failed, because the user %s is the item owner', array($itemSourceName, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
if (!\OC_User::userExists($shareWith)) {
|
|
$message = 'Sharing %s failed, because the user %s does not exist';
|
|
$message_t = $l->t('Sharing %s failed, because the user %s does not exist', array($itemSourceName, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
if ($sharingPolicy == 'groups_only') {
|
|
$inGroup = array_intersect(\OC_Group::getUserGroups($uidOwner), \OC_Group::getUserGroups($shareWith));
|
|
if (empty($inGroup)) {
|
|
$message = 'Sharing %s failed, because the user '
|
|
.'%s is not a member of any groups that %s is a member of';
|
|
$message_t = $l->t('Sharing %s failed, because the user %s is not a member of any groups that %s is a member of', array($itemSourceName, $shareWith, $uidOwner));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith, $uidOwner), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
}
|
|
// Check if the item source is already shared with the user, either from the same owner or a different user
|
|
if ($checkExists = self::getItems($itemType, $itemSource, self::$shareTypeUserAndGroups,
|
|
$shareWith, null, self::FORMAT_NONE, null, 1, true, true)) {
|
|
// Only allow the same share to occur again if it is the same
|
|
// owner and is not a user share, this use case is for increasing
|
|
// permissions for a specific user
|
|
if ($checkExists['uid_owner'] != $uidOwner || $checkExists['share_type'] == $shareType) {
|
|
$message = 'Sharing %s failed, because this item is already shared with %s';
|
|
$message_t = $l->t('Sharing %s failed, because this item is already shared with %s', array($itemSourceName, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
}
|
|
} else if ($shareType === self::SHARE_TYPE_GROUP) {
|
|
if (!\OC_Group::groupExists($shareWith)) {
|
|
$message = 'Sharing %s failed, because the group %s does not exist';
|
|
$message_t = $l->t('Sharing %s failed, because the group %s does not exist', array($itemSourceName, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
if ($sharingPolicy == 'groups_only' && !\OC_Group::inGroup($uidOwner, $shareWith)) {
|
|
$message = 'Sharing %s failed, because '
|
|
.'%s is not a member of the group %s';
|
|
$message_t = $l->t('Sharing %s failed, because %s is not a member of the group %s', array($itemSourceName, $uidOwner, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $uidOwner, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
// Check if the item source is already shared with the group, either from the same owner or a different user
|
|
// The check for each user in the group is done inside the put() function
|
|
if ($checkExists = self::getItems($itemType, $itemSource, self::SHARE_TYPE_GROUP, $shareWith,
|
|
null, self::FORMAT_NONE, null, 1, true, true)) {
|
|
// Only allow the same share to occur again if it is the same
|
|
// owner and is not a group share, this use case is for increasing
|
|
// permissions for a specific user
|
|
if ($checkExists['uid_owner'] != $uidOwner || $checkExists['share_type'] == $shareType) {
|
|
$message = 'Sharing %s failed, because this item is already shared with %s';
|
|
$message_t = $l->t('Sharing %s failed, because this item is already shared with %s', array($itemSourceName, $shareWith));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
}
|
|
// Convert share with into an array with the keys group and users
|
|
$group = $shareWith;
|
|
$shareWith = array();
|
|
$shareWith['group'] = $group;
|
|
$shareWith['users'] = array_diff(\OC_Group::usersInGroup($group), array($uidOwner));
|
|
} else if ($shareType === self::SHARE_TYPE_LINK) {
|
|
if (\OC_Appconfig::getValue('core', 'shareapi_allow_links', 'yes') == 'yes') {
|
|
// when updating a link share
|
|
if ($checkExists = self::getItems($itemType, $itemSource, self::SHARE_TYPE_LINK, null,
|
|
$uidOwner, self::FORMAT_NONE, null, 1)) {
|
|
// remember old token
|
|
$oldToken = $checkExists['token'];
|
|
$oldPermissions = $checkExists['permissions'];
|
|
//delete the old share
|
|
Helper::delete($checkExists['id']);
|
|
}
|
|
|
|
// Generate hash of password - same method as user passwords
|
|
if (isset($shareWith)) {
|
|
$forcePortable = (CRYPT_BLOWFISH != 1);
|
|
$hasher = new \PasswordHash(8, $forcePortable);
|
|
$shareWith = $hasher->HashPassword($shareWith.\OC_Config::getValue('passwordsalt', ''));
|
|
} else {
|
|
// reuse the already set password, but only if we change permissions
|
|
// otherwise the user disabled the password protection
|
|
if ($checkExists && (int)$permissions !== (int)$oldPermissions) {
|
|
$shareWith = $checkExists['share_with'];
|
|
}
|
|
}
|
|
|
|
// Generate token
|
|
if (isset($oldToken)) {
|
|
$token = $oldToken;
|
|
} else {
|
|
$token = \OC_Util::generateRandomBytes(self::TOKEN_LENGTH);
|
|
}
|
|
$result = self::put($itemType, $itemSource, $shareType, $shareWith, $uidOwner, $permissions,
|
|
null, $token, $itemSourceName);
|
|
if ($result) {
|
|
return $token;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
$message = 'Sharing %s failed, because sharing with links is not allowed';
|
|
$message_t = $l->t('Sharing %s failed, because sharing with links is not allowed', array($itemSourceName));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
return false;
|
|
} else {
|
|
// Future share types need to include their own conditions
|
|
$message = 'Share type %s is not valid for %s';
|
|
$message_t = $l->t('Share type %s is not valid for %s', array($shareType, $itemSource));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $shareType, $itemSource), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
// Put the item into the database
|
|
return self::put($itemType, $itemSource, $shareType, $shareWith, $uidOwner, $permissions, null, null, $itemSourceName);
|
|
}
|
|
|
|
/**
|
|
* Unshare an item from a user, group, or delete a private link
|
|
* @param string Item type
|
|
* @param string Item source
|
|
* @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
|
|
* @param string User or group the item is being shared with
|
|
* @return Returns true on success or false on failure
|
|
*/
|
|
public static function unshare($itemType, $itemSource, $shareType, $shareWith) {
|
|
$item = self::getItems($itemType, $itemSource, $shareType, $shareWith, \OC_User::getUser(),self::FORMAT_NONE, null, 1);
|
|
if (!empty($item)) {
|
|
self::unshareItem($item);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Unshare an item from all users, groups, and remove all links
|
|
* @param string Item type
|
|
* @param string Item source
|
|
* @return Returns true on success or false on failure
|
|
*/
|
|
public static function unshareAll($itemType, $itemSource) {
|
|
// Get all of the owners of shares of this item.
|
|
$query = \OC_DB::prepare( 'SELECT `uid_owner` from `*PREFIX*share` WHERE `item_type`=? AND `item_source`=?' );
|
|
$result = $query->execute(array($itemType, $itemSource));
|
|
$shares = array();
|
|
// Add each owner's shares to the array of all shares for this item.
|
|
while ($row = $result->fetchRow()) {
|
|
$shares = array_merge($shares, self::getItems($itemType, $itemSource, null, null, $row['uid_owner']));
|
|
}
|
|
if (!empty($shares)) {
|
|
// Pass all the vars we have for now, they may be useful
|
|
$hookParams = array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'shares' => $shares,
|
|
);
|
|
\OC_Hook::emit('OCP\Share', 'pre_unshareAll', $hookParams);
|
|
foreach ($shares as $share) {
|
|
self::unshareItem($share);
|
|
}
|
|
\OC_Hook::emit('OCP\Share', 'post_unshareAll', $hookParams);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Unshare an item shared with the current user
|
|
* @param string Item type
|
|
* @param string Item target
|
|
* @return Returns true on success or false on failure
|
|
*
|
|
* Unsharing from self is not allowed for items inside collections
|
|
*/
|
|
public static function unshareFromSelf($itemType, $itemTarget) {
|
|
$item = self::getItemSharedWith($itemType, $itemTarget);
|
|
if (!empty($item)) {
|
|
if ((int)$item['share_type'] === self::SHARE_TYPE_GROUP) {
|
|
// Insert an extra row for the group share and set permission
|
|
// to 0 to prevent it from showing up for the user
|
|
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share`'
|
|
.' (`item_type`, `item_source`, `item_target`, `parent`, `share_type`,'
|
|
.' `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`, `file_target`)'
|
|
.' VALUES (?,?,?,?,?,?,?,?,?,?,?)');
|
|
$query->execute(array($item['item_type'], $item['item_source'], $item['item_target'],
|
|
$item['id'], self::$shareTypeGroupUserUnique,
|
|
\OC_User::getUser(), $item['uid_owner'], 0, $item['stime'], $item['file_source'],
|
|
$item['file_target']));
|
|
\OC_DB::insertid('*PREFIX*share');
|
|
// Delete all reshares by this user of the group share
|
|
Helper::delete($item['id'], true, \OC_User::getUser());
|
|
} else if ((int)$item['share_type'] === self::$shareTypeGroupUserUnique) {
|
|
// Set permission to 0 to prevent it from showing up for the user
|
|
$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = ? WHERE `id` = ?');
|
|
$query->execute(array(0, $item['id']));
|
|
Helper::delete($item['id'], true);
|
|
} else {
|
|
Helper::delete($item['id']);
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
/**
|
|
* sent status if users got informed by mail about share
|
|
* @param string $itemType
|
|
* @param string $itemSource
|
|
* @param int $shareType SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
|
|
* @param bool $status
|
|
*/
|
|
public static function setSendMailStatus($itemType, $itemSource, $shareType, $status) {
|
|
$status = $status ? 1 : 0;
|
|
|
|
$query = \OC_DB::prepare(
|
|
'UPDATE `*PREFIX*share`
|
|
SET `mail_send` = ?
|
|
WHERE `item_type` = ? AND `item_source` = ? AND `share_type` = ?');
|
|
|
|
$result = $query->execute(array($status, $itemType, $itemSource, $shareType));
|
|
|
|
if($result === false) {
|
|
\OC_Log::write('OCP\Share', 'Couldn\'t set send mail status', \OC_Log::ERROR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the permissions of an item for a specific user or group
|
|
* @param string Item type
|
|
* @param string Item source
|
|
* @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
|
|
* @param string User or group the item is being shared with
|
|
* @param int CRUDS permissions
|
|
* @return Returns true on success or false on failure
|
|
*/
|
|
public static function setPermissions($itemType, $itemSource, $shareType, $shareWith, $permissions) {
|
|
$l = \OC_L10N::get('lib');
|
|
if ($item = self::getItems($itemType, $itemSource, $shareType, $shareWith,
|
|
\OC_User::getUser(), self::FORMAT_NONE, null, 1, false)) {
|
|
// Check if this item is a reshare and verify that the permissions
|
|
// granted don't exceed the parent shared item
|
|
if (isset($item['parent'])) {
|
|
$query = \OC_DB::prepare('SELECT `permissions` FROM `*PREFIX*share` WHERE `id` = ?', 1);
|
|
$result = $query->execute(array($item['parent']))->fetchRow();
|
|
if (~(int)$result['permissions'] & $permissions) {
|
|
$message = 'Setting permissions for %s failed,'
|
|
.' because the permissions exceed permissions granted to %s';
|
|
$message_t = $l->t('Setting permissions for %s failed, because the permissions exceed permissions granted to %s', array($itemSource, \OC_User::getUser()));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSource, \OC_User::getUser()), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
}
|
|
$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = ? WHERE `id` = ?');
|
|
$query->execute(array($permissions, $item['id']));
|
|
if ($itemType === 'file' || $itemType === 'folder') {
|
|
\OC_Hook::emit('OCP\Share', 'post_update_permissions', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'shareType' => $shareType,
|
|
'shareWith' => $shareWith,
|
|
'uidOwner' => \OC_User::getUser(),
|
|
'permissions' => $permissions,
|
|
'path' => $item['path'],
|
|
));
|
|
}
|
|
// Check if permissions were removed
|
|
if ($item['permissions'] & ~$permissions) {
|
|
// If share permission is removed all reshares must be deleted
|
|
if (($item['permissions'] & \OCP\PERMISSION_SHARE) && (~$permissions & \OCP\PERMISSION_SHARE)) {
|
|
Helper::delete($item['id'], true);
|
|
} else {
|
|
$ids = array();
|
|
$parents = array($item['id']);
|
|
while (!empty($parents)) {
|
|
$parents = "'".implode("','", $parents)."'";
|
|
$query = \OC_DB::prepare('SELECT `id`, `permissions` FROM `*PREFIX*share`'
|
|
.' WHERE `parent` IN ('.$parents.')');
|
|
$result = $query->execute();
|
|
// Reset parents array, only go through loop again if
|
|
// items are found that need permissions removed
|
|
$parents = array();
|
|
while ($item = $result->fetchRow()) {
|
|
// Check if permissions need to be removed
|
|
if ($item['permissions'] & ~$permissions) {
|
|
// Add to list of items that need permissions removed
|
|
$ids[] = $item['id'];
|
|
$parents[] = $item['id'];
|
|
}
|
|
}
|
|
}
|
|
// Remove the permissions for all reshares of this item
|
|
if (!empty($ids)) {
|
|
$ids = "'".implode("','", $ids)."'";
|
|
// TODO this should be done with Doctrine platform objects
|
|
if (\OC_Config::getValue( "dbtype") === 'oci') {
|
|
$andOp = 'BITAND(`permissions`, ?)';
|
|
} else {
|
|
$andOp = '`permissions` & ?';
|
|
}
|
|
$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = '.$andOp
|
|
.' WHERE `id` IN ('.$ids.')');
|
|
$query->execute(array($permissions));
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
$message = 'Setting permissions for %s failed, because the item was not found';
|
|
$message_t = $l->t('Setting permissions for %s failed, because the item was not found', array($itemSource));
|
|
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSource), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
|
|
/**
|
|
* Set expiration date for a share
|
|
* @param string $itemType
|
|
* @param string $itemSource
|
|
* @param string $date expiration date
|
|
* @return \OCP\Share_Backend
|
|
*/
|
|
public static function setExpirationDate($itemType, $itemSource, $date) {
|
|
$user = \OC_User::getUser();
|
|
$items = self::getItems($itemType, $itemSource, null, null, $user, self::FORMAT_NONE, null, -1, false);
|
|
if (!empty($items)) {
|
|
if ($date == '') {
|
|
$date = null;
|
|
} else {
|
|
$date = new \DateTime($date);
|
|
}
|
|
$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `expiration` = ? WHERE `id` = ?');
|
|
$query->bindValue(1, $date, 'datetime');
|
|
foreach ($items as $item) {
|
|
$query->bindValue(2, (int) $item['id']);
|
|
$query->execute();
|
|
\OC_Hook::emit('OCP\Share', 'post_set_expiration_date', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'date' => $date,
|
|
'uidOwner' => $user
|
|
));
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks whether a share has expired, calls unshareItem() if yes.
|
|
* @param array $item Share data (usually database row)
|
|
* @return bool True if item was expired, false otherwise.
|
|
*/
|
|
protected static function expireItem(array $item) {
|
|
if (!empty($item['expiration'])) {
|
|
$now = new \DateTime();
|
|
$expires = new \DateTime($item['expiration']);
|
|
if ($now > $expires) {
|
|
self::unshareItem($item);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Unshares a share given a share data array
|
|
* @param array $item Share data (usually database row)
|
|
* @return null
|
|
*/
|
|
protected static function unshareItem(array $item) {
|
|
// Pass all the vars we have for now, they may be useful
|
|
$hookParams = array(
|
|
'itemType' => $item['item_type'],
|
|
'itemSource' => $item['item_source'],
|
|
'shareType' => $item['share_type'],
|
|
'shareWith' => $item['share_with'],
|
|
'itemParent' => $item['parent'],
|
|
'uidOwner' => $item['uid_owner'],
|
|
);
|
|
|
|
\OC_Hook::emit('OCP\Share', 'pre_unshare', $hookParams + array(
|
|
'fileSource' => $item['file_source'],
|
|
));
|
|
Helper::delete($item['id']);
|
|
\OC_Hook::emit('OCP\Share', 'post_unshare', $hookParams);
|
|
}
|
|
|
|
/**
|
|
* Get the backend class for the specified item type
|
|
* @param string $itemType
|
|
* @return \OCP\Share_Backend
|
|
*/
|
|
public static function getBackend($itemType) {
|
|
$l = \OC_L10N::get('lib');
|
|
if (isset(self::$backends[$itemType])) {
|
|
return self::$backends[$itemType];
|
|
} else if (isset(self::$backendTypes[$itemType]['class'])) {
|
|
$class = self::$backendTypes[$itemType]['class'];
|
|
if (class_exists($class)) {
|
|
self::$backends[$itemType] = new $class;
|
|
if (!(self::$backends[$itemType] instanceof \OCP\Share_Backend)) {
|
|
$message = 'Sharing backend %s must implement the interface OCP\Share_Backend';
|
|
$message_t = $l->t('Sharing backend %s must implement the interface OCP\Share_Backend', array($class));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $class), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
return self::$backends[$itemType];
|
|
} else {
|
|
$message = 'Sharing backend %s not found';
|
|
$message_t = $l->t('Sharing backend %s not found', array($class));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $class), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
}
|
|
$message = 'Sharing backend for %s not found';
|
|
$message_t = $l->t('Sharing backend for %s not found', array($itemType));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemType), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
|
|
/**
|
|
* Check if resharing is allowed
|
|
* @return Returns true if allowed or false
|
|
*
|
|
* Resharing is allowed by default if not configured
|
|
*/
|
|
private static function isResharingAllowed() {
|
|
if (!isset(self::$isResharingAllowed)) {
|
|
if (\OC_Appconfig::getValue('core', 'shareapi_allow_resharing', 'yes') == 'yes') {
|
|
self::$isResharingAllowed = true;
|
|
} else {
|
|
self::$isResharingAllowed = false;
|
|
}
|
|
}
|
|
return self::$isResharingAllowed;
|
|
}
|
|
|
|
/**
|
|
* Get a list of collection item types for the specified item type
|
|
* @param string Item type
|
|
* @return array
|
|
*/
|
|
private static function getCollectionItemTypes($itemType) {
|
|
$collectionTypes = array($itemType);
|
|
foreach (self::$backendTypes as $type => $backend) {
|
|
if (in_array($backend['collectionOf'], $collectionTypes)) {
|
|
$collectionTypes[] = $type;
|
|
}
|
|
}
|
|
// TODO Add option for collections to be collection of themselves, only 'folder' does it now...
|
|
if (!self::getBackend($itemType) instanceof \OCP\Share_Backend_Collection || $itemType != 'folder') {
|
|
unset($collectionTypes[0]);
|
|
}
|
|
// Return array if collections were found or the item type is a
|
|
// collection itself - collections can be inside collections
|
|
if (count($collectionTypes) > 0) {
|
|
return $collectionTypes;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Get shared items from the database
|
|
* @param string Item type
|
|
* @param string Item source or target (optional)
|
|
* @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, SHARE_TYPE_LINK, $shareTypeUserAndGroups, or $shareTypeGroupUserUnique
|
|
* @param string User or group the item is being shared with
|
|
* @param string User that is the owner of shared items (optional)
|
|
* @param int Format to convert items to with formatItems()
|
|
* @param mixed Parameters to pass to formatItems()
|
|
* @param int Number of items to return, -1 to return all matches (optional)
|
|
* @param bool Include collection item types (optional)
|
|
* @param bool TODO (optional)
|
|
* @prams bool check expire date
|
|
* @return array
|
|
*
|
|
* See public functions getItem(s)... for parameter usage
|
|
*
|
|
*/
|
|
public static function getItems($itemType, $item = null, $shareType = null, $shareWith = null,
|
|
$uidOwner = null, $format = self::FORMAT_NONE, $parameters = null, $limit = -1,
|
|
$includeCollections = false, $itemShareWithBySource = false, $checkExpireDate = true) {
|
|
if (!self::isEnabled()) {
|
|
return array();
|
|
}
|
|
$backend = self::getBackend($itemType);
|
|
$collectionTypes = false;
|
|
// Get filesystem root to add it to the file target and remove from the
|
|
// file source, match file_source with the file cache
|
|
if ($itemType == 'file' || $itemType == 'folder') {
|
|
if(!is_null($uidOwner)) {
|
|
$root = \OC\Files\Filesystem::getRoot();
|
|
} else {
|
|
$root = '';
|
|
}
|
|
$where = 'INNER JOIN `*PREFIX*filecache` ON `file_source` = `*PREFIX*filecache`.`fileid`';
|
|
if (!isset($item)) {
|
|
$where .= ' WHERE `file_target` IS NOT NULL';
|
|
}
|
|
$fileDependent = true;
|
|
$queryArgs = array();
|
|
} else {
|
|
$fileDependent = false;
|
|
$root = '';
|
|
$collectionTypes = self::getCollectionItemTypes($itemType);
|
|
if ($includeCollections && !isset($item) && $collectionTypes) {
|
|
// If includeCollections is true, find collections of this item type, e.g. a music album contains songs
|
|
if (!in_array($itemType, $collectionTypes)) {
|
|
$itemTypes = array_merge(array($itemType), $collectionTypes);
|
|
} else {
|
|
$itemTypes = $collectionTypes;
|
|
}
|
|
$placeholders = join(',', array_fill(0, count($itemTypes), '?'));
|
|
$where = ' WHERE `item_type` IN ('.$placeholders.'))';
|
|
$queryArgs = $itemTypes;
|
|
} else {
|
|
$where = ' WHERE `item_type` = ?';
|
|
$queryArgs = array($itemType);
|
|
}
|
|
}
|
|
if (\OC_Appconfig::getValue('core', 'shareapi_allow_links', 'yes') !== 'yes') {
|
|
$where .= ' AND `share_type` != ?';
|
|
$queryArgs[] = self::SHARE_TYPE_LINK;
|
|
}
|
|
if (isset($shareType)) {
|
|
// Include all user and group items
|
|
if ($shareType == self::$shareTypeUserAndGroups && isset($shareWith)) {
|
|
$where .= ' AND `share_type` IN (?,?,?)';
|
|
$queryArgs[] = self::SHARE_TYPE_USER;
|
|
$queryArgs[] = self::SHARE_TYPE_GROUP;
|
|
$queryArgs[] = self::$shareTypeGroupUserUnique;
|
|
$userAndGroups = array_merge(array($shareWith), \OC_Group::getUserGroups($shareWith));
|
|
$placeholders = join(',', array_fill(0, count($userAndGroups), '?'));
|
|
$where .= ' AND `share_with` IN ('.$placeholders.')';
|
|
$queryArgs = array_merge($queryArgs, $userAndGroups);
|
|
// Don't include own group shares
|
|
$where .= ' AND `uid_owner` != ?';
|
|
$queryArgs[] = $shareWith;
|
|
} else {
|
|
$where .= ' AND `share_type` = ?';
|
|
$queryArgs[] = $shareType;
|
|
if (isset($shareWith)) {
|
|
$where .= ' AND `share_with` = ?';
|
|
$queryArgs[] = $shareWith;
|
|
}
|
|
}
|
|
}
|
|
if (isset($uidOwner)) {
|
|
$where .= ' AND `uid_owner` = ?';
|
|
$queryArgs[] = $uidOwner;
|
|
if (!isset($shareType)) {
|
|
// Prevent unique user targets for group shares from being selected
|
|
$where .= ' AND `share_type` != ?';
|
|
$queryArgs[] = self::$shareTypeGroupUserUnique;
|
|
}
|
|
if ($fileDependent) {
|
|
$column = 'file_source';
|
|
} else {
|
|
$column = 'item_source';
|
|
}
|
|
} else {
|
|
if ($fileDependent) {
|
|
$column = 'file_target';
|
|
} else {
|
|
$column = 'item_target';
|
|
}
|
|
}
|
|
if (isset($item)) {
|
|
$collectionTypes = self::getCollectionItemTypes($itemType);
|
|
if ($includeCollections && $collectionTypes) {
|
|
$where .= ' AND (';
|
|
} else {
|
|
$where .= ' AND';
|
|
}
|
|
// If looking for own shared items, check item_source else check item_target
|
|
if (isset($uidOwner) || $itemShareWithBySource) {
|
|
// If item type is a file, file source needs to be checked in case the item was converted
|
|
if ($fileDependent) {
|
|
$where .= ' `file_source` = ?';
|
|
$column = 'file_source';
|
|
} else {
|
|
$where .= ' `item_source` = ?';
|
|
$column = 'item_source';
|
|
}
|
|
} else {
|
|
if ($fileDependent) {
|
|
$where .= ' `file_target` = ?';
|
|
$item = \OC\Files\Filesystem::normalizePath($item);
|
|
} else {
|
|
$where .= ' `item_target` = ?';
|
|
}
|
|
}
|
|
$queryArgs[] = $item;
|
|
if ($includeCollections && $collectionTypes) {
|
|
$placeholders = join(',', array_fill(0, count($collectionTypes), '?'));
|
|
$where .= ' OR `item_type` IN ('.$placeholders.'))';
|
|
$queryArgs = array_merge($queryArgs, $collectionTypes);
|
|
}
|
|
}
|
|
if ($limit != -1 && !$includeCollections) {
|
|
if ($shareType == self::$shareTypeUserAndGroups) {
|
|
// Make sure the unique user target is returned if it exists,
|
|
// unique targets should follow the group share in the database
|
|
// If the limit is not 1, the filtering can be done later
|
|
$where .= ' ORDER BY `*PREFIX*share`.`id` DESC';
|
|
}
|
|
// The limit must be at least 3, because filtering needs to be done
|
|
if ($limit < 3) {
|
|
$queryLimit = 3;
|
|
} else {
|
|
$queryLimit = $limit;
|
|
}
|
|
} else {
|
|
$queryLimit = null;
|
|
}
|
|
$select = self::createSelectStatement($format, $fileDependent, $uidOwner);
|
|
$root = strlen($root);
|
|
$query = \OC_DB::prepare('SELECT '.$select.' FROM `*PREFIX*share` '.$where, $queryLimit);
|
|
$result = $query->execute($queryArgs);
|
|
if (\OC_DB::isError($result)) {
|
|
\OC_Log::write('OCP\Share',
|
|
\OC_DB::getErrorMessage($result) . ', select=' . $select . ' where=' . $where,
|
|
\OC_Log::ERROR);
|
|
}
|
|
$items = array();
|
|
$targets = array();
|
|
$switchedItems = array();
|
|
$mounts = array();
|
|
while ($row = $result->fetchRow()) {
|
|
self::transformDBResults($row);
|
|
// Filter out duplicate group shares for users with unique targets
|
|
if ($row['share_type'] == self::$shareTypeGroupUserUnique && isset($items[$row['parent']])) {
|
|
$row['share_type'] = self::SHARE_TYPE_GROUP;
|
|
$row['share_with'] = $items[$row['parent']]['share_with'];
|
|
// Remove the parent group share
|
|
unset($items[$row['parent']]);
|
|
if ($row['permissions'] == 0) {
|
|
continue;
|
|
}
|
|
} else if (!isset($uidOwner)) {
|
|
// Check if the same target already exists
|
|
if (isset($targets[$row[$column]])) {
|
|
// Check if the same owner shared with the user twice
|
|
// through a group and user share - this is allowed
|
|
$id = $targets[$row[$column]];
|
|
if (isset($items[$id]) && $items[$id]['uid_owner'] == $row['uid_owner']) {
|
|
// Switch to group share type to ensure resharing conditions aren't bypassed
|
|
if ($items[$id]['share_type'] != self::SHARE_TYPE_GROUP) {
|
|
$items[$id]['share_type'] = self::SHARE_TYPE_GROUP;
|
|
$items[$id]['share_with'] = $row['share_with'];
|
|
}
|
|
// Switch ids if sharing permission is granted on only
|
|
// one share to ensure correct parent is used if resharing
|
|
if (~(int)$items[$id]['permissions'] & \OCP\PERMISSION_SHARE
|
|
&& (int)$row['permissions'] & \OCP\PERMISSION_SHARE) {
|
|
$items[$row['id']] = $items[$id];
|
|
$switchedItems[$id] = $row['id'];
|
|
unset($items[$id]);
|
|
$id = $row['id'];
|
|
}
|
|
// Combine the permissions for the item
|
|
$items[$id]['permissions'] |= (int)$row['permissions'];
|
|
continue;
|
|
}
|
|
} else {
|
|
$targets[$row[$column]] = $row['id'];
|
|
}
|
|
}
|
|
// Remove root from file source paths if retrieving own shared items
|
|
if (isset($uidOwner) && isset($row['path'])) {
|
|
if (isset($row['parent'])) {
|
|
// FIXME: Doesn't always construct the correct path, example:
|
|
// Folder '/a/b', share '/a' and '/a/b' to user2
|
|
// user2 reshares /Shared/b and ask for share status of /Shared/a/b
|
|
// expected result: path=/Shared/a/b; actual result /Shared/b because of the parent
|
|
$query = \OC_DB::prepare('SELECT `file_target` FROM `*PREFIX*share` WHERE `id` = ?');
|
|
$parentResult = $query->execute(array($row['parent']));
|
|
if (\OC_DB::isError($result)) {
|
|
\OC_Log::write('OCP\Share', 'Can\'t select parent: ' .
|
|
\OC_DB::getErrorMessage($result) . ', select=' . $select . ' where=' . $where,
|
|
\OC_Log::ERROR);
|
|
} else {
|
|
$parentRow = $parentResult->fetchRow();
|
|
$tmpPath = '/Shared' . $parentRow['file_target'];
|
|
// find the right position where the row path continues from the target path
|
|
$pos = strrpos($row['path'], $parentRow['file_target']);
|
|
$subPath = substr($row['path'], $pos);
|
|
$splitPath = explode('/', $subPath);
|
|
foreach (array_slice($splitPath, 2) as $pathPart) {
|
|
$tmpPath = $tmpPath . '/' . $pathPart;
|
|
}
|
|
$row['path'] = $tmpPath;
|
|
}
|
|
} else {
|
|
if (!isset($mounts[$row['storage']])) {
|
|
$mountPoints = \OC\Files\Filesystem::getMountByNumericId($row['storage']);
|
|
if (is_array($mountPoints)) {
|
|
$mounts[$row['storage']] = current($mountPoints);
|
|
}
|
|
}
|
|
if ($mounts[$row['storage']]) {
|
|
$path = $mounts[$row['storage']]->getMountPoint().$row['path'];
|
|
$row['path'] = substr($path, $root);
|
|
}
|
|
}
|
|
}
|
|
if($checkExpireDate) {
|
|
if (self::expireItem($row)) {
|
|
continue;
|
|
}
|
|
}
|
|
// Check if resharing is allowed, if not remove share permission
|
|
if (isset($row['permissions']) && !self::isResharingAllowed()) {
|
|
$row['permissions'] &= ~\OCP\PERMISSION_SHARE;
|
|
}
|
|
// Add display names to result
|
|
if ( isset($row['share_with']) && $row['share_with'] != '') {
|
|
$row['share_with_displayname'] = \OCP\User::getDisplayName($row['share_with']);
|
|
}
|
|
if ( isset($row['uid_owner']) && $row['uid_owner'] != '') {
|
|
$row['displayname_owner'] = \OCP\User::getDisplayName($row['uid_owner']);
|
|
}
|
|
|
|
$items[$row['id']] = $row;
|
|
}
|
|
if (!empty($items)) {
|
|
$collectionItems = array();
|
|
foreach ($items as &$row) {
|
|
// Return only the item instead of a 2-dimensional array
|
|
if ($limit == 1 && $row[$column] == $item && ($row['item_type'] == $itemType || $itemType == 'file')) {
|
|
if ($format == self::FORMAT_NONE) {
|
|
return $row;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
// Check if this is a collection of the requested item type
|
|
if ($includeCollections && $collectionTypes && in_array($row['item_type'], $collectionTypes)) {
|
|
if (($collectionBackend = self::getBackend($row['item_type']))
|
|
&& $collectionBackend instanceof \OCP\Share_Backend_Collection) {
|
|
// Collections can be inside collections, check if the item is a collection
|
|
if (isset($item) && $row['item_type'] == $itemType && $row[$column] == $item) {
|
|
$collectionItems[] = $row;
|
|
} else {
|
|
$collection = array();
|
|
$collection['item_type'] = $row['item_type'];
|
|
if ($row['item_type'] == 'file' || $row['item_type'] == 'folder') {
|
|
$collection['path'] = basename($row['path']);
|
|
}
|
|
$row['collection'] = $collection;
|
|
// Fetch all of the children sources
|
|
$children = $collectionBackend->getChildren($row[$column]);
|
|
foreach ($children as $child) {
|
|
$childItem = $row;
|
|
$childItem['item_type'] = $itemType;
|
|
if ($row['item_type'] != 'file' && $row['item_type'] != 'folder') {
|
|
$childItem['item_source'] = $child['source'];
|
|
$childItem['item_target'] = $child['target'];
|
|
}
|
|
if ($backend instanceof \OCP\Share_Backend_File_Dependent) {
|
|
if ($row['item_type'] == 'file' || $row['item_type'] == 'folder') {
|
|
$childItem['file_source'] = $child['source'];
|
|
} else { // TODO is this really needed if we already know that we use the file backend?
|
|
$meta = \OC\Files\Filesystem::getFileInfo($child['file_path']);
|
|
$childItem['file_source'] = $meta['fileid'];
|
|
}
|
|
$childItem['file_target'] =
|
|
\OC\Files\Filesystem::normalizePath($child['file_path']);
|
|
}
|
|
if (isset($item)) {
|
|
if ($childItem[$column] == $item) {
|
|
// Return only the item instead of a 2-dimensional array
|
|
if ($limit == 1) {
|
|
if ($format == self::FORMAT_NONE) {
|
|
return $childItem;
|
|
} else {
|
|
// Unset the items array and break out of both loops
|
|
$items = array();
|
|
$items[] = $childItem;
|
|
break 2;
|
|
}
|
|
} else {
|
|
$collectionItems[] = $childItem;
|
|
}
|
|
}
|
|
} else {
|
|
$collectionItems[] = $childItem;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Remove collection item
|
|
$toRemove = $row['id'];
|
|
if (array_key_exists($toRemove, $switchedItems)) {
|
|
$toRemove = $switchedItems[$toRemove];
|
|
}
|
|
unset($items[$toRemove]);
|
|
}
|
|
}
|
|
if (!empty($collectionItems)) {
|
|
$items = array_merge($items, $collectionItems);
|
|
}
|
|
|
|
return self::formatResult($items, $column, $backend, $format, $parameters);
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Put shared item into the database
|
|
* @param string Item type
|
|
* @param string Item source
|
|
* @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
|
|
* @param string User or group the item is being shared with
|
|
* @param string User that is the owner of shared item
|
|
* @param int CRUDS permissions
|
|
* @param bool|array Parent folder target (optional)
|
|
* @param string token (optional)
|
|
* @param string name of the source item (optional)
|
|
* @return bool Returns true on success or false on failure
|
|
*/
|
|
private static function put($itemType, $itemSource, $shareType, $shareWith, $uidOwner,
|
|
$permissions, $parentFolder = null, $token = null, $itemSourceName = null) {
|
|
$backend = self::getBackend($itemType);
|
|
$l = \OC_L10N::get('lib');
|
|
// Check if this is a reshare
|
|
if ($checkReshare = self::getItemSharedWithBySource($itemType, $itemSource, self::FORMAT_NONE, null, true)) {
|
|
|
|
// Check if attempting to share back to owner
|
|
if ($checkReshare['uid_owner'] == $shareWith && $shareType == self::SHARE_TYPE_USER) {
|
|
$message = 'Sharing %s failed, because the user %s is the original sharer';
|
|
$message_t = $l->t('Sharing %s failed, because the user %s is the original sharer', array($itemSourceName, $shareWith));
|
|
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $shareWith), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
// Check if share permissions is granted
|
|
if (self::isResharingAllowed() && (int)$checkReshare['permissions'] & \OCP\PERMISSION_SHARE) {
|
|
if (~(int)$checkReshare['permissions'] & $permissions) {
|
|
$message = 'Sharing %s failed, because the permissions exceed permissions granted to %s';
|
|
$message_t = $l->t('Sharing %s failed, because the permissions exceed permissions granted to %s', array($itemSourceName, $uidOwner));
|
|
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName, $uidOwner), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
} else {
|
|
// TODO Don't check if inside folder
|
|
$parent = $checkReshare['id'];
|
|
$itemSource = $checkReshare['item_source'];
|
|
$fileSource = $checkReshare['file_source'];
|
|
$suggestedItemTarget = $checkReshare['item_target'];
|
|
$suggestedFileTarget = $checkReshare['file_target'];
|
|
$filePath = $checkReshare['file_target'];
|
|
}
|
|
} else {
|
|
$message = 'Sharing %s failed, because resharing is not allowed';
|
|
$message_t = $l->t('Sharing %s failed, because resharing is not allowed', array($itemSourceName));
|
|
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSourceName), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
} else {
|
|
$parent = null;
|
|
$suggestedItemTarget = null;
|
|
$suggestedFileTarget = null;
|
|
if (!$backend->isValidSource($itemSource, $uidOwner)) {
|
|
$message = 'Sharing %s failed, because the sharing backend for '
|
|
.'%s could not find its source';
|
|
$message_t = $l->t('Sharing %s failed, because the sharing backend for %s could not find its source', array($itemSource, $itemType));
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSource, $itemType), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
if ($backend instanceof \OCP\Share_Backend_File_Dependent) {
|
|
$filePath = $backend->getFilePath($itemSource, $uidOwner);
|
|
if ($itemType == 'file' || $itemType == 'folder') {
|
|
$fileSource = $itemSource;
|
|
} else {
|
|
$meta = \OC\Files\Filesystem::getFileInfo($filePath);
|
|
$fileSource = $meta['fileid'];
|
|
}
|
|
if ($fileSource == -1) {
|
|
$message = 'Sharing %s failed, because the file could not be found in the file cache';
|
|
$message_t = $l->t('Sharing %s failed, because the file could not be found in the file cache', array($itemSource));
|
|
|
|
\OC_Log::write('OCP\Share', sprintf($message, $itemSource), \OC_Log::ERROR);
|
|
throw new \Exception($message_t);
|
|
}
|
|
} else {
|
|
$filePath = null;
|
|
$fileSource = null;
|
|
}
|
|
}
|
|
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`item_type`, `item_source`, `item_target`,'
|
|
.' `parent`, `share_type`, `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`,'
|
|
.' `file_target`, `token`) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)');
|
|
// Share with a group
|
|
if ($shareType == self::SHARE_TYPE_GROUP) {
|
|
$groupItemTarget = Helper::generateTarget($itemType, $itemSource, $shareType, $shareWith['group'],
|
|
$uidOwner, $suggestedItemTarget);
|
|
$run = true;
|
|
$error = '';
|
|
\OC_Hook::emit('OCP\Share', 'pre_shared', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'itemTarget' => $groupItemTarget,
|
|
'shareType' => $shareType,
|
|
'shareWith' => $shareWith['group'],
|
|
'uidOwner' => $uidOwner,
|
|
'permissions' => $permissions,
|
|
'fileSource' => $fileSource,
|
|
'token' => $token,
|
|
'run' => &$run,
|
|
'error' => &$error
|
|
));
|
|
|
|
if ($run === false) {
|
|
throw new \Exception($error);
|
|
}
|
|
|
|
if (isset($fileSource)) {
|
|
if ($parentFolder) {
|
|
if ($parentFolder === true) {
|
|
$groupFileTarget = Helper::generateTarget('file', $filePath, $shareType,
|
|
$shareWith['group'], $uidOwner, $suggestedFileTarget);
|
|
// Set group default file target for future use
|
|
$parentFolders[0]['folder'] = $groupFileTarget;
|
|
} else {
|
|
// Get group default file target
|
|
$groupFileTarget = $parentFolder[0]['folder'].$itemSource;
|
|
$parent = $parentFolder[0]['id'];
|
|
}
|
|
} else {
|
|
$groupFileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith['group'],
|
|
$uidOwner, $suggestedFileTarget);
|
|
}
|
|
} else {
|
|
$groupFileTarget = null;
|
|
}
|
|
$query->execute(array($itemType, $itemSource, $groupItemTarget, $parent, $shareType,
|
|
$shareWith['group'], $uidOwner, $permissions, time(), $fileSource, $groupFileTarget, $token));
|
|
// Save this id, any extra rows for this group share will need to reference it
|
|
$parent = \OC_DB::insertid('*PREFIX*share');
|
|
// Loop through all users of this group in case we need to add an extra row
|
|
foreach ($shareWith['users'] as $uid) {
|
|
$itemTarget = Helper::generateTarget($itemType, $itemSource, self::SHARE_TYPE_USER, $uid,
|
|
$uidOwner, $suggestedItemTarget, $parent);
|
|
if (isset($fileSource)) {
|
|
if ($parentFolder) {
|
|
if ($parentFolder === true) {
|
|
$fileTarget = Helper::generateTarget('file', $filePath, self::SHARE_TYPE_USER, $uid,
|
|
$uidOwner, $suggestedFileTarget, $parent);
|
|
if ($fileTarget != $groupFileTarget) {
|
|
$parentFolders[$uid]['folder'] = $fileTarget;
|
|
}
|
|
} else if (isset($parentFolder[$uid])) {
|
|
$fileTarget = $parentFolder[$uid]['folder'].$itemSource;
|
|
$parent = $parentFolder[$uid]['id'];
|
|
}
|
|
} else {
|
|
$fileTarget = Helper::generateTarget('file', $filePath, self::SHARE_TYPE_USER,
|
|
$uid, $uidOwner, $suggestedFileTarget, $parent);
|
|
}
|
|
} else {
|
|
$fileTarget = null;
|
|
}
|
|
// Insert an extra row for the group share if the item or file target is unique for this user
|
|
if ($itemTarget != $groupItemTarget || (isset($fileSource) && $fileTarget != $groupFileTarget)) {
|
|
$query->execute(array($itemType, $itemSource, $itemTarget, $parent,
|
|
self::$shareTypeGroupUserUnique, $uid, $uidOwner, $permissions, time(),
|
|
$fileSource, $fileTarget, $token));
|
|
$id = \OC_DB::insertid('*PREFIX*share');
|
|
}
|
|
}
|
|
\OC_Hook::emit('OCP\Share', 'post_shared', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'itemTarget' => $groupItemTarget,
|
|
'parent' => $parent,
|
|
'shareType' => $shareType,
|
|
'shareWith' => $shareWith['group'],
|
|
'uidOwner' => $uidOwner,
|
|
'permissions' => $permissions,
|
|
'fileSource' => $fileSource,
|
|
'fileTarget' => $groupFileTarget,
|
|
'id' => $parent,
|
|
'token' => $token
|
|
));
|
|
|
|
if ($parentFolder === true) {
|
|
// Return parent folders to preserve file target paths for potential children
|
|
return $parentFolders;
|
|
}
|
|
} else {
|
|
$itemTarget = Helper::generateTarget($itemType, $itemSource, $shareType, $shareWith, $uidOwner,
|
|
$suggestedItemTarget);
|
|
$run = true;
|
|
$error = '';
|
|
\OC_Hook::emit('OCP\Share', 'pre_shared', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'itemTarget' => $itemTarget,
|
|
'shareType' => $shareType,
|
|
'shareWith' => $shareWith,
|
|
'uidOwner' => $uidOwner,
|
|
'permissions' => $permissions,
|
|
'fileSource' => $fileSource,
|
|
'token' => $token,
|
|
'run' => &$run,
|
|
'error' => &$error
|
|
));
|
|
|
|
if ($run === false) {
|
|
throw new \Exception($error);
|
|
}
|
|
|
|
if (isset($fileSource)) {
|
|
if ($parentFolder) {
|
|
if ($parentFolder === true) {
|
|
$fileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith,
|
|
$uidOwner, $suggestedFileTarget);
|
|
$parentFolders['folder'] = $fileTarget;
|
|
} else {
|
|
$fileTarget = $parentFolder['folder'].$itemSource;
|
|
$parent = $parentFolder['id'];
|
|
}
|
|
} else {
|
|
$fileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith, $uidOwner,
|
|
$suggestedFileTarget);
|
|
}
|
|
} else {
|
|
$fileTarget = null;
|
|
}
|
|
$query->execute(array($itemType, $itemSource, $itemTarget, $parent, $shareType, $shareWith, $uidOwner,
|
|
$permissions, time(), $fileSource, $fileTarget, $token));
|
|
$id = \OC_DB::insertid('*PREFIX*share');
|
|
\OC_Hook::emit('OCP\Share', 'post_shared', array(
|
|
'itemType' => $itemType,
|
|
'itemSource' => $itemSource,
|
|
'itemTarget' => $itemTarget,
|
|
'parent' => $parent,
|
|
'shareType' => $shareType,
|
|
'shareWith' => $shareWith,
|
|
'uidOwner' => $uidOwner,
|
|
'permissions' => $permissions,
|
|
'fileSource' => $fileSource,
|
|
'fileTarget' => $fileTarget,
|
|
'id' => $id,
|
|
'token' => $token
|
|
));
|
|
if ($parentFolder === true) {
|
|
$parentFolders['id'] = $id;
|
|
// Return parent folder to preserve file target paths for potential children
|
|
return $parentFolders;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Delete all shares with type SHARE_TYPE_LINK
|
|
*/
|
|
public static function removeAllLinkShares() {
|
|
// Delete any link shares
|
|
$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*share` WHERE `share_type` = ?');
|
|
$result = $query->execute(array(self::SHARE_TYPE_LINK));
|
|
while ($item = $result->fetchRow()) {
|
|
Helper::delete($item['id']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* In case a password protected link is not yet authenticated this function will return false
|
|
*
|
|
* @param array $linkItem
|
|
* @return bool
|
|
*/
|
|
public static function checkPasswordProtectedShare(array $linkItem) {
|
|
if (!isset($linkItem['share_with'])) {
|
|
return true;
|
|
}
|
|
if (!isset($linkItem['share_type'])) {
|
|
return true;
|
|
}
|
|
if (!isset($linkItem['id'])) {
|
|
return true;
|
|
}
|
|
|
|
if ($linkItem['share_type'] != \OCP\Share::SHARE_TYPE_LINK) {
|
|
return true;
|
|
}
|
|
|
|
if ( \OC::$session->exists('public_link_authenticated')
|
|
&& \OC::$session->get('public_link_authenticated') === $linkItem['id'] ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @breif construct select statement
|
|
* @param int $format
|
|
* @param bool $fileDependent ist it a file/folder share or a generla share
|
|
* @param string $uidOwner
|
|
* @return string select statement
|
|
*/
|
|
private static function createSelectStatement($format, $fileDependent, $uidOwner = null) {
|
|
$select = '*';
|
|
if ($format == self::FORMAT_STATUSES) {
|
|
if ($fileDependent) {
|
|
$select = '`*PREFIX*share`.`id`, `*PREFIX*share`.`parent`, `share_type`, `path`, `storage`, `share_with`, `uid_owner` , `file_source`';
|
|
} else {
|
|
$select = '`id`, `parent`, `share_type`, `share_with`, `uid_owner`, `item_source`';
|
|
}
|
|
} else {
|
|
if (isset($uidOwner)) {
|
|
if ($fileDependent) {
|
|
$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `*PREFIX*share`.`parent`,'
|
|
. ' `share_type`, `share_with`, `file_source`, `path`, `permissions`, `stime`,'
|
|
. ' `expiration`, `token`, `storage`, `mail_send`, `uid_owner`';
|
|
} else {
|
|
$select = '`id`, `item_type`, `item_source`, `parent`, `share_type`, `share_with`, `permissions`,'
|
|
. ' `stime`, `file_source`, `expiration`, `token`, `mail_send`, `uid_owner`';
|
|
}
|
|
} else {
|
|
if ($fileDependent) {
|
|
if ($format == \OC_Share_Backend_File::FORMAT_GET_FOLDER_CONTENTS || $format == \OC_Share_Backend_File::FORMAT_FILE_APP_ROOT) {
|
|
$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `*PREFIX*share`.`parent`, `uid_owner`, '
|
|
. '`share_type`, `share_with`, `file_source`, `path`, `file_target`, '
|
|
. '`permissions`, `expiration`, `storage`, `*PREFIX*filecache`.`parent` as `file_parent`, '
|
|
. '`name`, `mtime`, `mimetype`, `mimepart`, `size`, `unencrypted_size`, `encrypted`, `etag`, `mail_send`';
|
|
} else {
|
|
$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `item_target`,
|
|
`*PREFIX*share`.`parent`, `share_type`, `share_with`, `uid_owner`,
|
|
`file_source`, `path`, `file_target`, `permissions`, `stime`, `expiration`, `token`, `storage`, `mail_send`';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $select;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief transform db results
|
|
* @param array $row result
|
|
*/
|
|
private static function transformDBResults(&$row) {
|
|
if (isset($row['id'])) {
|
|
$row['id'] = (int) $row['id'];
|
|
}
|
|
if (isset($row['share_type'])) {
|
|
$row['share_type'] = (int) $row['share_type'];
|
|
}
|
|
if (isset($row['parent'])) {
|
|
$row['parent'] = (int) $row['parent'];
|
|
}
|
|
if (isset($row['file_parent'])) {
|
|
$row['file_parent'] = (int) $row['file_parent'];
|
|
}
|
|
if (isset($row['file_source'])) {
|
|
$row['file_source'] = (int) $row['file_source'];
|
|
}
|
|
if (isset($row['permissions'])) {
|
|
$row['permissions'] = (int) $row['permissions'];
|
|
}
|
|
if (isset($row['storage'])) {
|
|
$row['storage'] = (int) $row['storage'];
|
|
}
|
|
if (isset($row['stime'])) {
|
|
$row['stime'] = (int) $row['stime'];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief format result
|
|
* @param array $items result
|
|
* @prams string $column is it a file share or a general share ('file_target' or 'item_target')
|
|
* @params \OCP\Share_Backend $backend sharing backend
|
|
* @param int $format
|
|
* @param array additional format parameters
|
|
* @return array formate result
|
|
*/
|
|
private static function formatResult($items, $column, $backend, $format = self::FORMAT_NONE , $parameters = null) {
|
|
if ($format === self::FORMAT_NONE) {
|
|
return $items;
|
|
} else if ($format === self::FORMAT_STATUSES) {
|
|
$statuses = array();
|
|
foreach ($items as $item) {
|
|
if ($item['share_type'] === self::SHARE_TYPE_LINK) {
|
|
$statuses[$item[$column]]['link'] = true;
|
|
} else if (!isset($statuses[$item[$column]])) {
|
|
$statuses[$item[$column]]['link'] = false;
|
|
}
|
|
if ('file_target') {
|
|
$statuses[$item[$column]]['path'] = $item['path'];
|
|
}
|
|
}
|
|
return $statuses;
|
|
} else {
|
|
return $backend->formatItems($items, $format, $parameters);
|
|
}
|
|
}
|
|
}
|