nextcloud/apps/files_sharing/lib/controllers/sharecontroller.php

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<?php
/**
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* @author Björn Schießle <schiessle@owncloud.com>
* @author Georg Ehrke <georg@owncloud.com>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Lukas Reschke <lukas@owncloud.com>
2015-03-26 13:44:34 +03:00
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\Files_Sharing\Controllers;
use OC;
use OC\Files\Filesystem;
use OC_Files;
use OC_Util;
use OCP;
use OCP\Template;
use OCP\Share;
use OCP\AppFramework\Controller;
use OCP\IRequest;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\NotFoundResponse;
use OC\URLGenerator;
use OC\AppConfig;
use OCP\ILogger;
use OCA\Files_Sharing\Helper;
use OCP\User;
use OCP\Util;
use OCA\Files_Sharing\Activity;
use \OCP\Files\NotFoundException;
/**
* Class ShareController
*
* @package OCA\Files_Sharing\Controllers
*/
class ShareController extends Controller {
/** @var \OC\User\Session */
protected $userSession;
/** @var \OC\AppConfig */
protected $appConfig;
/** @var \OCP\IConfig */
protected $config;
/** @var \OC\URLGenerator */
protected $urlGenerator;
/** @var \OC\User\Manager */
protected $userManager;
/** @var \OCP\ILogger */
protected $logger;
/** @var OCP\Activity\IManager */
protected $activityManager;
/**
* @param string $appName
* @param IRequest $request
* @param OC\User\Session $userSession
* @param AppConfig $appConfig
* @param OCP\IConfig $config
* @param URLGenerator $urlGenerator
* @param OCP\IUserManager $userManager
* @param ILogger $logger
* @param OCP\Activity\IManager $activityManager
*/
public function __construct($appName,
IRequest $request,
OC\User\Session $userSession,
AppConfig $appConfig,
OCP\IConfig $config,
URLGenerator $urlGenerator,
OCP\IUserManager $userManager,
ILogger $logger,
OCP\Activity\IManager $activityManager) {
parent::__construct($appName, $request);
$this->userSession = $userSession;
$this->appConfig = $appConfig;
$this->config = $config;
$this->urlGenerator = $urlGenerator;
$this->userManager = $userManager;
$this->logger = $logger;
$this->activityManager = $activityManager;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @return TemplateResponse|RedirectResponse
*/
public function showAuthenticate($token) {
$linkItem = Share::getShareByToken($token, false);
if(Helper::authenticate($linkItem)) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.showShare', array('token' => $token)));
}
return new TemplateResponse($this->appName, 'authenticate', array(), 'guest');
}
/**
* @PublicPage
* @UseSession
*
* Authenticates against password-protected shares
* @param $token
* @param string $password
* @return RedirectResponse|TemplateResponse
*/
public function authenticate($token, $password = '') {
$linkItem = Share::getShareByToken($token, false);
if($linkItem === false) {
return new NotFoundResponse();
}
$authenticate = Helper::authenticate($linkItem, $password);
if($authenticate === true) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.showShare', array('token' => $token)));
}
return new TemplateResponse($this->appName, 'authenticate', array('wrongpw' => true), 'guest');
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @param string $path
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* @return TemplateResponse|RedirectResponse
* @throws NotFoundException
*/
public function showShare($token, $path = '') {
\OC_User::setIncognitoMode(true);
// Check whether share exists
$linkItem = Share::getShareByToken($token, false);
if($linkItem === false) {
return new NotFoundResponse();
}
$shareOwner = $linkItem['uid_owner'];
$originalSharePath = $this->getPath($token);
// Share is password protected - check whether the user is permitted to access the share
if (isset($linkItem['share_with']) && !Helper::authenticate($linkItem)) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate',
array('token' => $token)));
}
if (Filesystem::isReadable($originalSharePath . $path)) {
$getPath = Filesystem::normalizePath($path);
$originalSharePath .= $path;
} else {
throw new NotFoundException();
}
$file = basename($originalSharePath);
$shareTmpl = [];
$shareTmpl['displayName'] = User::getDisplayName($shareOwner);
$shareTmpl['filename'] = $file;
$shareTmpl['directory_path'] = $linkItem['file_target'];
$shareTmpl['mimetype'] = Filesystem::getMimeType($originalSharePath);
$shareTmpl['previewSupported'] = \OC::$server->getPreviewManager()->isMimeSupported($shareTmpl['mimetype']);
$shareTmpl['dirToken'] = $linkItem['token'];
$shareTmpl['sharingToken'] = $token;
$shareTmpl['server2serversharing'] = Helper::isOutgoingServer2serverShareEnabled();
$shareTmpl['protected'] = isset($linkItem['share_with']) ? 'true' : 'false';
$shareTmpl['dir'] = '';
$nonHumanFileSize = \OC\Files\Filesystem::filesize($originalSharePath);
$shareTmpl['nonHumanFileSize'] = $nonHumanFileSize;
$shareTmpl['fileSize'] = \OCP\Util::humanFileSize($nonHumanFileSize);
// Show file list
if (Filesystem::is_dir($originalSharePath)) {
$shareTmpl['dir'] = $getPath;
$maxUploadFilesize = Util::maxUploadFilesize($originalSharePath);
$freeSpace = Util::freeSpace($originalSharePath);
$uploadLimit = Util::uploadLimit();
$folder = new Template('files', 'list', '');
$folder->assign('dir', $getPath);
$folder->assign('dirToken', $linkItem['token']);
$folder->assign('permissions', \OCP\Constants::PERMISSION_READ);
$folder->assign('isPublic', true);
$folder->assign('publicUploadEnabled', 'no');
$folder->assign('uploadMaxFilesize', $maxUploadFilesize);
$folder->assign('uploadMaxHumanFilesize', OCP\Util::humanFileSize($maxUploadFilesize));
$folder->assign('freeSpace', $freeSpace);
$folder->assign('uploadLimit', $uploadLimit); // PHP upload limit
$folder->assign('usedSpacePercent', 0);
$folder->assign('trash', false);
$shareTmpl['folder'] = $folder->fetchPage();
}
$shareTmpl['downloadURL'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.downloadShare', array('token' => $token));
$shareTmpl['maxSizeAnimateGif'] = $this->config->getSystemValue('max_filesize_animated_gifs_public_sharing', 10);
$shareTmpl['previewEnabled'] = $this->config->getSystemValue('enable_previews', true);
$csp = new OCP\AppFramework\Http\ContentSecurityPolicy();
$csp->addAllowedFrameDomain('\'self\'');
$response = new TemplateResponse($this->appName, 'public', $shareTmpl, 'base');
$response->setContentSecurityPolicy($csp);
return $response;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $token
* @param string $files
* @param string $path
* @return void|RedirectResponse
*/
public function downloadShare($token, $files = null, $path = '') {
\OC_User::setIncognitoMode(true);
$linkItem = OCP\Share::getShareByToken($token, false);
// Share is password protected - check whether the user is permitted to access the share
if (isset($linkItem['share_with'])) {
if(!Helper::authenticate($linkItem)) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate',
array('token' => $token)));
}
}
$files_list = null;
if (!is_null($files)) { // download selected files
$files_list = json_decode($files);
// in case we get only a single file
if ($files_list === null) {
$files_list = array($files);
}
}
$originalSharePath = self::getPath($token);
// Create the activities
if (isset($originalSharePath) && Filesystem::isReadable($originalSharePath . $path)) {
$originalSharePath = Filesystem::normalizePath($originalSharePath . $path);
$isDir = \OC\Files\Filesystem::is_dir($originalSharePath);
$activities = [];
if (!$isDir) {
// Single file public share
$activities[$originalSharePath] = Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
} else if (!empty($files_list)) {
// Only some files are downloaded
foreach ($files_list as $file) {
$filePath = Filesystem::normalizePath($originalSharePath . '/' . $file);
$isDir = \OC\Files\Filesystem::is_dir($filePath);
$activities[$filePath] = ($isDir) ? Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED : Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
}
} else {
// The folder is downloaded
$activities[$originalSharePath] = Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED;
}
foreach ($activities as $filePath => $subject) {
$this->activityManager->publishActivity(
'files_sharing', $subject, array($filePath), '', array(),
$filePath, '', $linkItem['uid_owner'], Activity::TYPE_PUBLIC_LINKS, Activity::PRIORITY_MEDIUM
);
}
}
// download selected files
if (!is_null($files)) {
// FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
// after dispatching the request which results in a "Cannot modify header information" notice.
OC_Files::get($originalSharePath, $files_list, $_SERVER['REQUEST_METHOD'] == 'HEAD');
exit();
} else {
// FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
// after dispatching the request which results in a "Cannot modify header information" notice.
OC_Files::get(dirname($originalSharePath), basename($originalSharePath), $_SERVER['REQUEST_METHOD'] == 'HEAD');
exit();
}
}
/**
* @param string $token
* @return string Resolved file path of the token
* @throws NotFoundException In case share could not get properly resolved
*/
private function getPath($token) {
$linkItem = Share::getShareByToken($token, false);
if (is_array($linkItem) && isset($linkItem['uid_owner'])) {
// seems to be a valid share
$rootLinkItem = Share::resolveReShare($linkItem);
if (isset($rootLinkItem['uid_owner'])) {
if(!$this->userManager->userExists($rootLinkItem['uid_owner'])) {
throw new NotFoundException('Owner of the share does not exist anymore');
}
OC_Util::tearDownFS();
OC_Util::setupFS($rootLinkItem['uid_owner']);
$path = Filesystem::getPath($linkItem['file_source']);
if(!empty($path) && Filesystem::isReadable($path)) {
return $path;
}
}
}
throw new NotFoundException('No file found belonging to file.');
}
}