165afb004b
Breaking change for 8.1 wiki (Security > Administrators): The log format for failed logins has changed and uses now the remote address and is considering reverse proxies for such scenarios when configured correctly.
108 lines
3.8 KiB
PHP
108 lines
3.8 KiB
PHP
<?php
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/**
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* @author Bjoern Schiessle <schiessle@owncloud.com>
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* @author Georg Ehrke <georg@owncloud.com>
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* @author Lukas Reschke <lukas@owncloud.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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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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OCP\JSON::checkAppEnabled('files_sharing');
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\OC_User::setIncognitoMode(true);
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$file = array_key_exists('file', $_GET) ? (string) $_GET['file'] : '';
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$maxX = array_key_exists('x', $_GET) ? (int) $_GET['x'] : '36';
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$maxY = array_key_exists('y', $_GET) ? (int) $_GET['y'] : '36';
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$scalingUp = array_key_exists('scalingup', $_GET) ? (bool) $_GET['scalingup'] : true;
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$token = array_key_exists('t', $_GET) ? (string) $_GET['t'] : '';
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$keepAspect = array_key_exists('a', $_GET) ? true : false;
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if($token === ''){
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\OC_Response::setStatus(\OC_Response::STATUS_BAD_REQUEST);
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\OC_Log::write('core-preview', 'No token parameter was passed', \OC_Log::DEBUG);
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exit;
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}
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$linkedItem = \OCP\Share::getShareByToken($token);
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if($linkedItem === false || ($linkedItem['item_type'] !== 'file' && $linkedItem['item_type'] !== 'folder')) {
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\OC_Response::setStatus(\OC_Response::STATUS_NOT_FOUND);
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\OC_Log::write('core-preview', 'Passed token parameter is not valid', \OC_Log::DEBUG);
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exit;
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}
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if(!isset($linkedItem['uid_owner']) || !isset($linkedItem['file_source'])) {
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\OC_Response::setStatus(\OC_Response::STATUS_INTERNAL_SERVER_ERROR);
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\OC_Log::write('core-preview', 'Passed token seems to be valid, but it does not contain all necessary information . ("' . $token . '")', \OC_Log::WARN);
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exit;
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}
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$rootLinkItem = OCP\Share::resolveReShare($linkedItem);
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$userId = $rootLinkItem['uid_owner'];
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OCP\JSON::checkUserExists($rootLinkItem['uid_owner']);
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\OC_Util::setupFS($userId);
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\OC\Files\Filesystem::initMountPoints($userId);
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$view = new \OC\Files\View('/' . $userId . '/files');
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$pathId = $linkedItem['file_source'];
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$path = $view->getPath($pathId);
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$pathInfo = $view->getFileInfo($path);
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$sharedFile = null;
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if($linkedItem['item_type'] === 'folder') {
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$isValid = \OC\Files\Filesystem::isValidPath($file);
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if(!$isValid) {
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\OC_Response::setStatus(\OC_Response::STATUS_BAD_REQUEST);
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\OC_Log::write('core-preview', 'Passed filename is not valid, might be malicious (file:"' . $file . '";ip:"' . \OC::$server->getRequest()->getRemoteAddress() . '")', \OC_Log::WARN);
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exit;
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}
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$sharedFile = \OC\Files\Filesystem::normalizePath($file);
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}
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if($linkedItem['item_type'] === 'file') {
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$parent = $pathInfo['parent'];
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$path = $view->getPath($parent);
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$sharedFile = $pathInfo['name'];
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}
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$path = \OC\Files\Filesystem::normalizePath($path, false);
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if(substr($path, 0, 1) === '/') {
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$path = substr($path, 1);
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}
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if($maxX === 0 || $maxY === 0) {
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\OC_Response::setStatus(\OC_Response::STATUS_BAD_REQUEST);
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\OC_Log::write('core-preview', 'x and/or y set to 0', \OC_Log::DEBUG);
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exit;
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}
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$root = 'files/' . $path;
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try{
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$preview = new \OC\Preview($userId, $root);
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$preview->setFile($sharedFile);
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$preview->setMaxX($maxX);
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$preview->setMaxY($maxY);
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$preview->setScalingUp($scalingUp);
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$preview->setKeepAspect($keepAspect);
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$preview->showPreview();
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} catch (\Exception $e) {
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\OC_Response::setStatus(\OC_Response::STATUS_INTERNAL_SERVER_ERROR);
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\OC_Log::write('core', $e->getmessage(), \OC_Log::DEBUG);
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}
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