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<?php
/**
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Richdocuments;
use OCA\Richdocuments\Db\WopiMapper;
use OCA\Richdocuments\Db\Wopi;
use OCA\Richdocuments\Service\CapabilitiesService;
use OCA\Richdocuments\WOPI\Parser;
use OCP\Files\File;
use OCP\Files\IRootFolder;
use OCP\Files\Node;
use OCP\IGroupManager;
use OCP\IURLGenerator;
use OCP\IUserManager;
use OCP\Share\IManager;
use OCP\IL10N;
use OCP\Util;
class TokenManager {
/** @var IRootFolder */
private $rootFolder;
/** @var IManager */
private $shareManager;
/** @var IURLGenerator */
private $urlGenerator;
/** @var Parser */
private $wopiParser;
/** @var AppConfig */
private $appConfig;
/** @var string */
private $userId;
/** @var WopiMapper */
private $wopiMapper;
/** @var IL10N */
private $trans;
/** @var IUserManager */
private $userManager;
/** @var IGroupManager */
private $groupManager;
/** @var CapabilitiesService */
private $capabilitiesService;
/** @var Helper */
private $helper;
/**
* @param IRootFolder $rootFolder
* @param IManager $shareManager
* @param IURLGenerator $urlGenerator
* @param Parser $wopiParser
* @param AppConfig $appConfig
* @param string $UserId
* @param WopiMapper $wopiMapper
* @param IL10N $trans
*/
public function __construct(
IRootFolder $rootFolder,
IManager $shareManager,
IURLGenerator $urlGenerator,
Parser $wopiParser,
CapabilitiesService $capabilitiesService,
AppConfig $appConfig,
$UserId,
WopiMapper $wopiMapper,
IL10N $trans,
IUserManager $userManager,
IGroupManager $groupManager,
Helper $helper
) {
$this->rootFolder = $rootFolder;
$this->shareManager = $shareManager;
$this->urlGenerator = $urlGenerator;
$this->wopiParser = $wopiParser;
$this->capabilitiesService = $capabilitiesService;
$this->appConfig = $appConfig;
$this->trans = $trans;
$this->userId = $UserId;
$this->wopiMapper = $wopiMapper;
$this->userManager = $userManager;
$this->groupManager = $groupManager;
$this->helper = $helper;
}
/**
* @param string $fileId
* @param string $shareToken
* @param string $editoruid
* @return array
* @throws \Exception
*/
public function getToken($fileId, $shareToken = null, $editoruid = null, $direct = false, $isRemoteToken = false) {
list($fileId, , $version) = Helper::parseFileId($fileId);
$owneruid = null;
$hideDownload = false;
// if the user is not logged-in do use the sharers storage
if ($shareToken !== null) {
/** @var File $file */
$rootFolder = $this->rootFolder;
$share = $this->shareManager->getShareByToken($shareToken);
$updatable = (bool)($share->getPermissions() & \OCP\Constants::PERMISSION_UPDATE);
$hideDownload = $share->getHideDownload();
$owneruid = $share->getShareOwner();
} else if ($this->userId !== null) {
try {
$editoruid = $this->userId;
$rootFolder = $this->rootFolder->getUserFolder($editoruid);
$files = $rootFolder->getById((int)$fileId);
$updatable = false;
foreach ($files as $file) {
if ($file->isUpdateable()) {
$updatable = true;
break;
}
}
// Check if the editor (user who is accessing) is in editable group
// UserCanWrite only if
// 1. No edit groups are set or
// 2. if they are set, it is in one of the edit groups
$editGroups = array_filter(explode('|', $this->appConfig->getAppValue('edit_groups')));
$editorUser = $this->userManager->get($editoruid);
if ($updatable && count($editGroups) > 0 && $editorUser) {
$updatable = false;
foreach ($editGroups as $editGroup) {
$editorGroup = $this->groupManager->get($editGroup);
if ($editorGroup !== null && $editorGroup->inGroup($editorUser)) {
$updatable = true;
break;
}
}
}
} catch (\Exception $e) {
throw $e;
}
} else {
$rootFolder = $this->rootFolder;
// no active user login while generating the token
// this is required during WopiPutRelativeFile
if (is_null($editoruid)) {
\OC::$server->getLogger()->warning('Generating token for SaveAs without editoruid');
$updatable = true;
} else {
// Make sure we use the user folder if available since fetching all files by id from the root might be expensive
$rootFolder = $this->rootFolder->getUserFolder($editoruid);
$updatable = false;
$files = $rootFolder->getById($fileId);
foreach ($files as $file) {
if ($file->isUpdateable()) {
$updatable = true;
break;
}
}
}
}
/** @var File $file */
$file = $rootFolder->getById($fileId)[0];
// If its a public share, use the owner from the share, otherwise check the file object
if (is_null($owneruid)) {
$owner = $file->getOwner();
if (is_null($owner)) {
// Editor UID instead of owner UID in case owner is null e.g. group folders
$owneruid = $editoruid;
} else {
$owneruid = $owner->getUID();
}
}
// force read operation to trigger possible audit logging
$fp = $file->fopen('r');
fclose($fp);
$serverHost = $this->urlGenerator->getAbsoluteURL('/');//$this->request->getServerProtocol() . '://' . $this->request->getServerHost();
$guest_name = null;
if ($this->userId === null) {
if ($guest_name = $this->helper->getGuestName()) {
$guest_name = $this->trans->t('%s (Guest)', Util::sanitizeHTML($guest_name));
} else {
$guest_name = $this->trans->t('Anonymous guest');
}
}
$wopi = $this->wopiMapper->generateFileToken($fileId, $owneruid, $editoruid, $version, $updatable, $serverHost, $guest_name, 0, $hideDownload, $direct, $isRemoteToken, 0, $shareToken);
try {
return [
$this->wopiParser->getUrlSrc($file->getMimeType())['urlsrc'], // url src might not be found ehre
$wopi->getToken(),
$wopi
];
} catch (\Exception $e) {
throw $e;
}
}
public function updateToRemoteToken(Wopi $wopi, $shareToken, $remoteServer, $remoteServerToken, $remoteWopi) {
$uid = $remoteWopi['editorUid'] . '@' . $remoteServer;
$wopi->setEditorUid($shareToken);
$wopi->setCanwrite($wopi->getCanwrite() && $remoteWopi['canwrite']);
$wopi->setRemoteServer($remoteServer);
$wopi->setRemoteServerToken($remoteServerToken);
$wopi->setGuestDisplayname($uid);
$this->wopiMapper->update($wopi);
return $wopi;
}
public function getTokenForTemplate(File $templateFile, $userId, $targetFileId, $direct = false) {
$owneruid = $userId;
$editoruid = $userId;
$rootFolder = $this->rootFolder->getUserFolder($editoruid);
/** @var File $targetFile */
$targetFile = $rootFolder->getById($targetFileId);
$targetFile = $targetFile[0] ?? null;
if (!$targetFile) {
// TODO: Exception
return null;
}
$updatable = $targetFile->isUpdateable();
// Check if the editor (user who is accessing) is in editable group
// UserCanWrite only if
// 1. No edit groups are set or
// 2. if they are set, it is in one of the edit groups
$editGroups = array_filter(explode('|', $this->appConfig->getAppValue('edit_groups')));
$editorUser = $this->userManager->get($editoruid);
if ($updatable && count($editGroups) > 0 && $editorUser) {
$updatable = false;
foreach($editGroups as $editGroup) {
$editorGroup = $this->groupManager->get($editGroup);
if ($editorGroup !== null && $editorGroup->inGroup($editorUser)) {
$updatable = true;
break;
}
}
}
$serverHost = $this->urlGenerator->getAbsoluteURL('/');
if ($this->capabilitiesService->hasTemplateSource()) {
$wopi = $this->wopiMapper->generateFileToken($targetFile->getId(), $owneruid, $editoruid, 0, $updatable, $serverHost, null, 0, false, $direct, false, $templateFile->getId());
} else {
// Legacy way of creating new documents from a template
$wopi = $this->wopiMapper->generateFileToken($templateFile->getId(), $owneruid, $editoruid, 0, $updatable, $serverHost, null, $targetFile->getId(), $direct);
}
return [
$this->wopiParser->getUrlSrc($templateFile->getMimeType())['urlsrc'],
$wopi
];
}
/**
* @param Node $node
* @return Wopi
*/
public function getRemoteToken(Node $node) {
list($urlSrc, $token, $wopi) = $this->getToken($node->getId(), null, null, false, true);
$wopi->setIsRemoteToken(true);
$wopi->setRemoteServer($node->getStorage()->getRemote());
$this->wopiMapper->update($wopi);
return $wopi;
}
/**
* @param Node $node
* @return Wopi
*/
public function getRemoteTokenFromDirect(Node $node, $editorUid) {
list($urlSrc, $token, $wopi) = $this->getToken($node->getId(), null, $editorUid, true, true);
$wopi->setIsRemoteToken(true);
$wopi->setRemoteServer($node->getStorage()->getRemote());
$this->wopiMapper->update($wopi);
return $wopi;
}
}
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