643 lines
20 KiB
PHP
643 lines
20 KiB
PHP
<?php
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/**
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_Sharing\API;
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use OC\HintException;
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class Local {
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/**
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* get all shares
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*
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* @param array $params option 'file' to limit the result to a specific file/folder
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* @return \OC_OCS_Result share information
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*/
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public static function getAllShares($params) {
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if (isset($_GET['shared_with_me']) && $_GET['shared_with_me'] !== 'false') {
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return self::getFilesSharedWithMe();
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}
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// if a file is specified, get the share for this file
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if (isset($_GET['path'])) {
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if ( isset($_GET['reshares']) && $_GET['reshares'] !== 'false' ) {
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$reshares = true;
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} else {
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$reshares = false;
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}
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if (isset($_GET['subfiles']) && $_GET['subfiles'] !== 'false') {
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return self::getSharesFromFolder($_GET['path']);
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}
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return self::collectShares(self::getFileId($_GET['path']),
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self::getItemType($_GET['path']),
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false,
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$_GET['path'],
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$reshares);
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}
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$shares = \OCP\Share::getItemShared('file', null);
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if ($shares === false) {
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return new \OC_OCS_Result(null, 404, 'could not get shares');
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} else {
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foreach ($shares as &$share) {
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if ($share['item_type'] === 'file' && isset($share['path'])) {
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$share['mimetype'] = \OC_Helper::getFileNameMimeType($share['path']);
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if (\OC::$server->getPreviewManager()->isMimeSupported($share['mimetype'])) {
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$share['isPreviewAvailable'] = true;
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}
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}
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if (!is_null($share['token'])) {
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$share['url'] = \OC::$server->getURLGenerator()->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $share['token']]);
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}
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}
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return new \OC_OCS_Result($shares);
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}
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}
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/**
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* get share information for a given share
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*
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* @param array $params which contains a 'id'
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* @return \OC_OCS_Result share information
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*/
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public static function getShare($params) {
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$s = self::getShareFromId($params['id']);
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return self::collectShares($s['file_source'], $s['item_type'], true, null, false, (int)$params['id']);
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}
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/**
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* collect all share information, either of a specific share or all
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* shares for a given path
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*
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* @param string $itemSource
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* @param string $itemType
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* @param bool $getSpecificShare
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* @param string $path
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* @param bool $reshares
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* @param int $id
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*
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* @return \OC_OCS_Result
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*/
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private static function collectShares($itemSource, $itemType, $getSpecificShare = false, $path = null, $reshares = false, $id = null) {
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if ($itemSource !== null) {
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$shares = \OCP\Share::getItemShared($itemType, $itemSource);
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$receivedFrom = \OCP\Share::getItemSharedWithBySource($itemType, $itemSource);
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// if a specific share was specified only return this one
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if ($getSpecificShare === true) {
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foreach ($shares as $share) {
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if ($share['id'] === $id) {
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$shares = array('element' => $share);
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break;
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}
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}
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} else {
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foreach ($shares as $key => $share) {
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$shares[$key]['path'] = $path;
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}
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}
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// include also reshares in the lists. This means that the result
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// will contain every user with access to the file.
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if ($reshares === true) {
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$shares = self::addReshares($shares, $itemSource);
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}
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if ($receivedFrom) {
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foreach ($shares as $key => $share) {
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$shares[$key]['received_from'] = $receivedFrom['uid_owner'];
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$shares[$key]['received_from_displayname'] = \OCP\User::getDisplayName($receivedFrom['uid_owner']);
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}
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}
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} else {
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$shares = null;
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}
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if ($shares === null || empty($shares)) {
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return new \OC_OCS_Result(null, 404, 'share doesn\'t exist');
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} else {
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foreach ($shares as &$share) {
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if (!is_null($share['token'])) {
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$share['url'] = \OC::$server->getURLGenerator()->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $share['token']]);
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}
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}
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return new \OC_OCS_Result($shares);
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}
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}
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/**
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* add reshares to a array of shares
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* @param array $shares array of shares
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* @param int $itemSource item source ID
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* @return array new shares array which includes reshares
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*/
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private static function addReshares($shares, $itemSource) {
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// if there are no shares than there are also no reshares
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$firstShare = reset($shares);
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if ($firstShare) {
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$path = $firstShare['path'];
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} else {
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return $shares;
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}
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$select = '`*PREFIX*share`.`id`, `item_type`, `*PREFIX*share`.`parent`, `share_type`, `share_with`, `file_source`, `path` , `*PREFIX*share`.`permissions`, `stime`, `expiration`, `token`, `storage`, `mail_send`, `mail_send`';
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$getReshares = \OCP\DB::prepare('SELECT ' . $select . ' FROM `*PREFIX*share` INNER JOIN `*PREFIX*filecache` ON `file_source` = `*PREFIX*filecache`.`fileid` WHERE `*PREFIX*share`.`file_source` = ? AND `*PREFIX*share`.`item_type` IN (\'file\', \'folder\') AND `uid_owner` != ?');
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$reshares = $getReshares->execute(array($itemSource, \OCP\User::getUser()))->fetchAll();
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foreach ($reshares as $key => $reshare) {
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if (isset($reshare['share_with']) && $reshare['share_with'] !== '') {
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$reshares[$key]['share_with_displayname'] = \OCP\User::getDisplayName($reshare['share_with']);
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}
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// add correct path to the result
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$reshares[$key]['path'] = $path;
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}
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return array_merge($shares, $reshares);
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}
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/**
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* get share from all files in a given folder (non-recursive)
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* @param string $path
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* @return \OC_OCS_Result
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*/
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private static function getSharesFromFolder($path) {
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$view = new \OC\Files\View('/'.\OCP\User::getUser().'/files');
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if(!$view->is_dir($path)) {
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return new \OC_OCS_Result(null, 400, "not a directory");
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}
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$content = $view->getDirectoryContent($path);
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$result = array();
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foreach ($content as $file) {
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// workaround because folders are named 'dir' in this context
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$itemType = $file['type'] === 'file' ? 'file' : 'folder';
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$share = \OCP\Share::getItemShared($itemType, $file['fileid']);
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if($share) {
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$receivedFrom = \OCP\Share::getItemSharedWithBySource($itemType, $file['fileid']);
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reset($share);
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$key = key($share);
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if ($receivedFrom) {
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$share[$key]['received_from'] = $receivedFrom['uid_owner'];
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$share[$key]['received_from_displayname'] = \OCP\User::getDisplayName($receivedFrom['uid_owner']);
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}
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$result = array_merge($result, $share);
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}
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}
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return new \OC_OCS_Result($result);
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}
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/**
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* get files shared with the user
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* @return \OC_OCS_Result
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*/
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private static function getFilesSharedWithMe() {
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try {
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$shares = \OCP\Share::getItemsSharedWith('file');
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foreach ($shares as &$share) {
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if ($share['item_type'] === 'file') {
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$share['mimetype'] = \OC_Helper::getFileNameMimeType($share['file_target']);
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if (\OC::$server->getPreviewManager()->isMimeSupported($share['mimetype'])) {
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$share['isPreviewAvailable'] = true;
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}
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unset($share['path']);
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}
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}
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$result = new \OC_OCS_Result($shares);
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} catch (\Exception $e) {
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$result = new \OC_OCS_Result(null, 403, $e->getMessage());
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}
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return $result;
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}
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/**
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* create a new share
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* @param array $params
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* @return \OC_OCS_Result
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*/
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public static function createShare($params) {
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$path = isset($_POST['path']) ? $_POST['path'] : null;
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if($path === null) {
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return new \OC_OCS_Result(null, 400, "please specify a file or folder path");
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}
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$itemSource = self::getFileId($path);
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$itemSourceName = $itemSource;
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$itemType = self::getItemType($path);
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$expirationDate = null;
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if($itemSource === null) {
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return new \OC_OCS_Result(null, 404, "wrong path, file/folder doesn't exist.");
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}
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$shareWith = isset($_POST['shareWith']) ? $_POST['shareWith'] : null;
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$shareType = isset($_POST['shareType']) ? (int)$_POST['shareType'] : null;
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switch($shareType) {
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case \OCP\Share::SHARE_TYPE_REMOTE:
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$shareWith = rtrim($shareWith, '/');
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$itemSourceName = basename($path);
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case \OCP\Share::SHARE_TYPE_USER:
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case \OCP\Share::SHARE_TYPE_GROUP:
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$permissions = isset($_POST['permissions']) ? (int)$_POST['permissions'] : 31;
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break;
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case \OCP\Share::SHARE_TYPE_LINK:
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//allow password protection
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$shareWith = isset($_POST['password']) ? $_POST['password'] : null;
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//check public link share
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$publicUploadEnabled = \OC::$server->getAppConfig()->getValue('core', 'shareapi_allow_public_upload', 'yes');
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if(isset($_POST['publicUpload']) && $publicUploadEnabled !== 'yes') {
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return new \OC_OCS_Result(null, 403, "public upload disabled by the administrator");
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}
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$publicUpload = isset($_POST['publicUpload']) ? $_POST['publicUpload'] : 'false';
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// read, create, update (7) if public upload is enabled or
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// read (1) if public upload is disabled
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$permissions = $publicUpload === 'true' ? 7 : 1;
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// Get the expiration date
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try {
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$expirationDate = isset($_POST['expireDate']) ? self::parseDate($_POST['expireDate']) : null;
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, 404, 'Invalid Date. Format must be YYYY-MM-DD.');
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}
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break;
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default:
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return new \OC_OCS_Result(null, 400, "unknown share type");
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}
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if (($permissions & \OCP\Constants::PERMISSION_READ) === 0) {
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return new \OC_OCS_Result(null, 400, 'invalid permissions');
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}
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try {
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$token = \OCP\Share::shareItem(
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$itemType,
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$itemSource,
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$shareType,
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$shareWith,
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$permissions,
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$itemSourceName,
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$expirationDate
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);
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} catch (HintException $e) {
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if ($e->getCode() === 0) {
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return new \OC_OCS_Result(null, 400, $e->getHint());
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} else {
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return new \OC_OCS_Result(null, $e->getCode(), $e->getHint());
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}
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, 403, $e->getMessage());
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}
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if ($token) {
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$data = array();
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$data['id'] = 'unknown';
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$shares = \OCP\Share::getItemShared($itemType, $itemSource);
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if(is_string($token)) { //public link share
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foreach ($shares as $share) {
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if ($share['token'] === $token) {
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$data['id'] = $share['id'];
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break;
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}
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}
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$data['url'] = \OC::$server->getURLGenerator()->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $token]);
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$data['token'] = $token;
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} else {
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foreach ($shares as $share) {
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if ($share['share_with'] === $shareWith && $share['share_type'] === $shareType) {
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$data['id'] = $share['id'];
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break;
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}
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}
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}
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$data['permissions'] = $share['permissions'];
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$data['expiration'] = $share['expiration'];
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return new \OC_OCS_Result($data);
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} else {
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return new \OC_OCS_Result(null, 404, "couldn't share file");
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}
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}
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/**
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* update shares, e.g. password, permissions, etc
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* @param array $params shareId 'id' and the parameter we want to update
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* currently supported: permissions, password, publicUpload
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* @return \OC_OCS_Result
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*/
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public static function updateShare($params) {
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$share = self::getShareFromId($params['id']);
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if(!isset($share['file_source'])) {
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return new \OC_OCS_Result(null, 404, "wrong share Id, share doesn't exist.");
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}
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try {
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if(isset($params['_put']['permissions'])) {
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return self::updatePermissions($share, $params);
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} elseif (isset($params['_put']['password'])) {
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return self::updatePassword($params['id'], (int)$share['share_type'], $params['_put']['password']);
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} elseif (isset($params['_put']['publicUpload'])) {
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return self::updatePublicUpload($share, $params);
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} elseif (isset($params['_put']['expireDate'])) {
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return self::updateExpireDate($share, $params);
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}
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, 400, $e->getMessage());
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}
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return new \OC_OCS_Result(null, 400, "Wrong or no update parameter given");
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}
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/**
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* update permissions for a share
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* @param array $share information about the share
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* @param array $params contains 'permissions'
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* @return \OC_OCS_Result
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*/
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private static function updatePermissions($share, $params) {
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$itemSource = $share['item_source'];
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$itemType = $share['item_type'];
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$shareWith = $share['share_with'];
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$shareType = $share['share_type'];
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$permissions = isset($params['_put']['permissions']) ? (int)$params['_put']['permissions'] : null;
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$publicUploadStatus = \OC::$server->getAppConfig()->getValue('core', 'shareapi_allow_public_upload', 'yes');
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$publicUploadEnabled = ($publicUploadStatus === 'yes') ? true : false;
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// only change permissions for public shares if public upload is enabled
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// and we want to set permissions to 1 (read only) or 7 (allow upload)
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if ( (int)$shareType === \OCP\Share::SHARE_TYPE_LINK ) {
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if ($publicUploadEnabled === false || ($permissions !== 7 && $permissions !== 1)) {
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return new \OC_OCS_Result(null, 400, "can't change permission for public link share");
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}
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}
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if (($permissions & \OCP\Constants::PERMISSION_READ) === 0) {
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return new \OC_OCS_Result(null, 400, 'invalid permissions');
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}
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try {
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$return = \OCP\Share::setPermissions(
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$itemType,
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$itemSource,
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$shareType,
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$shareWith,
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$permissions
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);
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} catch (\Exception $e) {
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return new \OC_OCS_Result(null, 404, $e->getMessage());
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}
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if ($return) {
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return new \OC_OCS_Result();
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} else {
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return new \OC_OCS_Result(null, 404, "couldn't set permissions");
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}
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}
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/**
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* enable/disable public upload
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* @param array $share information about the share
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* @param array $params contains 'publicUpload' which can be 'yes' or 'no'
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* @return \OC_OCS_Result
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*/
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private static function updatePublicUpload($share, $params) {
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$publicUploadEnabled = \OC::$server->getAppConfig()->getValue('core', 'shareapi_allow_public_upload', 'yes');
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if($publicUploadEnabled !== 'yes') {
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return new \OC_OCS_Result(null, 403, "public upload disabled by the administrator");
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}
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if ($share['item_type'] !== 'folder' ||
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(int)$share['share_type'] !== \OCP\Share::SHARE_TYPE_LINK ) {
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return new \OC_OCS_Result(null, 400, "public upload is only possible for public shared folders");
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}
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// read, create, update (7) if public upload is enabled or
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// read (1) if public upload is disabled
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$params['_put']['permissions'] = $params['_put']['publicUpload'] === 'true' ? 7 : 1;
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return self::updatePermissions($share, $params);
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}
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/**
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* set expire date for public link share
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* @param array $share information about the share
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* @param array $params contains 'expireDate' which needs to be a well formated date string, e.g DD-MM-YYYY
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* @return \OC_OCS_Result
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*/
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private static function updateExpireDate($share, $params) {
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// only public links can have a expire date
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if ((int)$share['share_type'] !== \OCP\Share::SHARE_TYPE_LINK ) {
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return new \OC_OCS_Result(null, 400, "expire date only exists for public link shares");
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}
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try {
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$expireDateSet = \OCP\Share::setExpirationDate($share['item_type'], $share['item_source'], $params['_put']['expireDate'], (int)$share['stime']);
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$result = ($expireDateSet) ? new \OC_OCS_Result() : new \OC_OCS_Result(null, 404, "couldn't set expire date");
|
|
} catch (\Exception $e) {
|
|
$result = new \OC_OCS_Result(null, 404, $e->getMessage());
|
|
}
|
|
|
|
return $result;
|
|
|
|
}
|
|
|
|
/**
|
|
* update password for public link share
|
|
* @param int $shareId
|
|
* @param int $shareType
|
|
* @param string $password
|
|
* @return \OC_OCS_Result
|
|
*/
|
|
private static function updatePassword($shareId, $shareType, $password) {
|
|
if($shareType !== \OCP\Share::SHARE_TYPE_LINK) {
|
|
return new \OC_OCS_Result(null, 400, "password protection is only supported for public shares");
|
|
}
|
|
|
|
if($password === '') {
|
|
$password = null;
|
|
}
|
|
|
|
try {
|
|
$result = \OCP\Share::setPassword($shareId, $password);
|
|
} catch (\Exception $e) {
|
|
return new \OC_OCS_Result(null, 403, $e->getMessage());
|
|
}
|
|
|
|
if($result) {
|
|
return new \OC_OCS_Result();
|
|
}
|
|
|
|
return new \OC_OCS_Result(null, 404, "couldn't set password");
|
|
}
|
|
|
|
/**
|
|
* unshare a file/folder
|
|
* @param array $params contains the shareID 'id' which should be unshared
|
|
* @return \OC_OCS_Result
|
|
*/
|
|
public static function deleteShare($params) {
|
|
|
|
$share = self::getShareFromId($params['id']);
|
|
$fileSource = isset($share['file_source']) ? $share['file_source'] : null;
|
|
$itemType = isset($share['item_type']) ? $share['item_type'] : null;;
|
|
|
|
if($fileSource === null) {
|
|
return new \OC_OCS_Result(null, 404, "wrong share ID, share doesn't exist.");
|
|
}
|
|
|
|
$shareWith = isset($share['share_with']) ? $share['share_with'] : null;
|
|
$shareType = isset($share['share_type']) ? (int)$share['share_type'] : null;
|
|
|
|
if( $shareType === \OCP\Share::SHARE_TYPE_LINK) {
|
|
$shareWith = null;
|
|
}
|
|
|
|
try {
|
|
$return = \OCP\Share::unshare(
|
|
$itemType,
|
|
$fileSource,
|
|
$shareType,
|
|
$shareWith);
|
|
} catch (\Exception $e) {
|
|
return new \OC_OCS_Result(null, 404, $e->getMessage());
|
|
}
|
|
|
|
if ($return) {
|
|
return new \OC_OCS_Result();
|
|
} else {
|
|
$msg = "Unshare Failed";
|
|
return new \OC_OCS_Result(null, 404, $msg);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Make sure that the passed date is valid ISO 8601
|
|
* So YYYY-MM-DD
|
|
* If not throw an exception
|
|
*
|
|
* @param string $expireDate
|
|
*
|
|
* @throws \Exception
|
|
* @return \DateTime
|
|
*/
|
|
private static function parseDate($expireDate) {
|
|
if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $expireDate) === 0) {
|
|
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
|
|
}
|
|
|
|
$date = new \DateTime($expireDate);
|
|
|
|
if ($date === false) {
|
|
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
|
|
}
|
|
|
|
return $date;
|
|
}
|
|
|
|
/**
|
|
* get file ID from a given path
|
|
* @param string $path
|
|
* @return string fileID or null
|
|
*/
|
|
private static function getFileId($path) {
|
|
|
|
$view = new \OC\Files\View('/'.\OCP\User::getUser().'/files');
|
|
$fileId = null;
|
|
$fileInfo = $view->getFileInfo($path);
|
|
if ($fileInfo) {
|
|
$fileId = $fileInfo['fileid'];
|
|
}
|
|
|
|
return $fileId;
|
|
}
|
|
|
|
/**
|
|
* get itemType
|
|
* @param string $path
|
|
* @return string type 'file', 'folder' or null of file/folder doesn't exists
|
|
*/
|
|
private static function getItemType($path) {
|
|
$view = new \OC\Files\View('/'.\OCP\User::getUser().'/files');
|
|
$itemType = null;
|
|
|
|
if ($view->is_dir($path)) {
|
|
$itemType = "folder";
|
|
} elseif ($view->is_file($path)) {
|
|
$itemType = "file";
|
|
}
|
|
|
|
return $itemType;
|
|
}
|
|
|
|
/**
|
|
* get some information from a given share
|
|
* @param int $shareID
|
|
* @return array with: item_source, share_type, share_with, item_type, permissions
|
|
*/
|
|
private static function getShareFromId($shareID) {
|
|
$sql = 'SELECT `file_source`, `item_source`, `share_type`, `share_with`, `item_type`, `permissions`, `stime` FROM `*PREFIX*share` WHERE `id` = ?';
|
|
$args = array($shareID);
|
|
$query = \OCP\DB::prepare($sql);
|
|
$result = $query->execute($args);
|
|
|
|
if (\OCP\DB::isError($result)) {
|
|
\OCP\Util::writeLog('files_sharing', \OCP\DB::getErrorMessage(), \OCP\Util::ERROR);
|
|
return null;
|
|
}
|
|
if ($share = $result->fetchRow()) {
|
|
return $share;
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
}
|