memories/lib/Controller/ApiBase.php

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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Varun Patil <radialapps@gmail.com>
* @author Varun Patil <radialapps@gmail.com>
* @license AGPL-3.0-or-later
*
* 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\Memories\Controller;
use OCA\Memories\AppInfo\Application;
use OCA\Memories\Db\TimelineQuery;
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use OCA\Memories\Db\TimelineRoot;
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use OCA\Memories\Exif;
use OCP\App\IAppManager;
use OCP\AppFramework\Controller;
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use OCP\Files\File;
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use OCP\Files\Folder;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\IRequest;
use OCP\IUserSession;
class ApiBase extends Controller
{
protected IConfig $config;
protected IUserSession $userSession;
protected IRootFolder $rootFolder;
protected IAppManager $appManager;
protected TimelineQuery $timelineQuery;
protected IDBConnection $connection;
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public function __construct(
IRequest $request,
IConfig $config,
IUserSession $userSession,
IDBConnection $connection,
IRootFolder $rootFolder,
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IAppManager $appManager
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) {
parent::__construct(Application::APPNAME, $request);
$this->config = $config;
$this->userSession = $userSession;
$this->connection = $connection;
$this->rootFolder = $rootFolder;
$this->appManager = $appManager;
$this->timelineQuery = new TimelineQuery($connection);
}
/** Get logged in user's UID or throw exception */
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protected function getUID(): string
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{
$user = $this->userSession->getUser();
if ($this->getShareToken()) {
$user = null;
} elseif (null === $user) {
throw new \Exception('User not logged in');
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}
return $user ? $user->getUID() : '';
}
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/** Get the TimelineRoot object relevant to the request */
protected function getRequestRoot()
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{
$user = $this->userSession->getUser();
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$root = new TimelineRoot();
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// Albums have no folder
if ($this->albumsIsEnabled() && $this->request->getParam('album')) {
if (null !== $user) {
return $root;
}
if (($token = $this->getShareToken()) && $this->timelineQuery->getAlbumByLink($token)) {
return $root;
}
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}
// Public shared folder
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if ($share = $this->getShareNode()) { // can throw
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$root->addFolder($share);
return $root;
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}
// Anything else needs a user
if (null === $user) {
throw new \Exception('User not logged in');
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}
$uid = $user->getUID();
$folder = null;
$folderPath = $this->request->getParam('folder');
$userFolder = $this->rootFolder->getUserFolder($uid);
try {
if (null !== $folderPath) {
$folder = $userFolder->get(Exif::removeExtraSlash($folderPath));
$root->addFolder($folder);
} else {
$timelinePath = $this->request->getParam('timelinePath', Exif::getPhotosPath($this->config, $uid));
$timelinePath = Exif::removeExtraSlash($timelinePath);
// Multiple timeline path support
$paths = explode(';', $timelinePath);
foreach ($paths as &$path) {
$folder = $userFolder->get(trim($path));
$root->addFolder($folder);
}
$root->addMountPoints();
}
} catch (\OCP\Files\NotFoundException $e) {
$msg = $e->getMessage();
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throw new \Exception("Folder not found: {$msg}");
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}
return $root;
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}
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/**
* Get a file with ID for the current user.
*/
protected function getUserFile(int $fileId): ?File
{
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// Don't check self for share token
if ($this->getShareToken()) {
return $this->getShareFile($fileId);
}
// Check both user folder and album
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return $this->getUserFolderFile($fileId) ??
$this->getAlbumFile($fileId);
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}
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/**
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* Get a file with ID from user's folder.
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*/
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protected function getUserFolderFile(int $id): ?File
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{
$user = $this->userSession->getUser();
if (null === $user) {
return null;
}
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
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return $this->getOneFileFromFolder($userFolder, $id);
}
/**
* Get a file with ID from an album.
*/
protected function getAlbumFile(int $id): ?File
{
$user = $this->userSession->getUser();
if (null === $user) {
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return null;
}
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$uid = $user->getUID();
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$owner = $this->timelineQuery->albumHasUserFile($uid, $id);
if (!$owner) {
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return null;
}
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$folder = $this->rootFolder->getUserFolder($owner);
return $this->getOneFileFromFolder($folder, $id);
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}
/**
* Get a file with ID from a public share.
*
* @param int $fileId
*/
protected function getShareFile(int $id): ?File
{
try {
// Album share
if ($this->request->getParam('album')) {
$album = $this->timelineQuery->getAlbumByLink($this->getShareToken());
if (null === $album) {
return null;
}
$owner = $this->timelineQuery->albumHasFile($album['album_id'], $id);
if (!$owner) {
return null;
}
$folder = $this->rootFolder->getUserFolder($owner);
return $this->getOneFileFromFolder($folder, $id);
}
// Folder share
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if ($share = $this->getShareNode()) {
return $this->getOneFileFromFolder($share, $id);
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}
} catch (\Exception $e) {
}
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return null;
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}
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protected function isRecursive()
{
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return null === $this->request->getParam('folder') || $this->request->getParam('recursive');
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}
protected function isArchive()
{
return null !== $this->request->getParam('archive');
}
protected function isMonthView()
{
return null !== $this->request->getParam('monthView');
}
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protected function isReverse()
{
return null !== $this->request->getParam('reverse');
}
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protected function getShareToken()
{
return $this->request->getParam('token');
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}
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protected function getShareObject()
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{
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// Get token from request
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$token = $this->getShareToken();
if (null === $token) {
return null;
}
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// Get share by token
$share = \OC::$server->get(\OCP\Share\IManager::class)->getShareByToken($token);
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if (!PublicController::validateShare($share)) {
return null;
}
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// Check if share is password protected
if (($password = $share->getPassword()) !== null) {
$session = \OC::$server->get(\OCP\ISession::class);
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// https://github.com/nextcloud/server/blob/0447b53bda9fe95ea0cbed765aa332584605d652/lib/public/AppFramework/PublicShareController.php#L119
if (
$session->get('public_link_authenticated_token') !== $token
|| $session->get('public_link_authenticated_password_hash') !== $password
) {
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throw new \Exception('Share is password protected and user is not authenticated');
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}
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}
return $share;
}
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protected function getShareNode()
{
$share = $this->getShareObject();
if (null === $share) {
return null;
}
// Get node from share
$node = $share->getNode(); // throws exception if not found
if (!$node instanceof Folder || !$node->isReadable() || !$node->isShareable()) {
throw new \Exception('Share not found or invalid');
}
return $node;
}
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/**
* Check if albums are enabled for this user.
*/
protected function albumsIsEnabled(): bool
{
return \OCA\Memories\Util::albumsIsEnabled($this->appManager);
}
/**
* Check if tags is enabled for this user.
*/
protected function tagsIsEnabled(): bool
{
return \OCA\Memories\Util::tagsIsEnabled($this->appManager);
}
/**
* Check if recognize is enabled for this user.
*/
protected function recognizeIsEnabled(): bool
{
return \OCA\Memories\Util::recognizeIsEnabled($this->appManager);
}
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// Check if facerecognition is installed and enabled for this user.
protected function facerecognitionIsInstalled(): bool
{
return \OCA\Memories\Util::facerecognitionIsInstalled($this->appManager);
}
/**
* Check if facerecognition is enabled for this user.
*/
protected function facerecognitionIsEnabled(): bool
{
return \OCA\Memories\Util::facerecognitionIsEnabled($this->config, $this->getUID());
}
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/**
* Helper to get one file or null from a fiolder.
*/
private function getOneFileFromFolder(Folder $folder, int $id): ?File
{
// Check for permissions and get numeric Id
$file = $folder->getById($id);
if (0 === \count($file)) {
return null;
}
// Check if node is a file
if (!$file[0] instanceof File) {
return null;
}
// Check read permission
if (!($file[0]->getPermissions() & \OCP\Constants::PERMISSION_READ)) {
return null;
}
return $file[0];
}
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}