<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace Component\Media;
use App\Core\Cache;
use App\Core\DB\DB;
use function App\Core\I18n\_m;
use App\Core\Log;
use App\Entity\Attachment;
use App\Entity\Avatar;
use App\Util\Common;
use App\Util\Exception\ClientException;
use Component\Media\Exception\NoAvatarException;
use Exception;
use Symfony\Component\Asset\Package;
use Symfony\Component\Asset\VersionStrategy\EmptyVersionStrategy;
use Symfony\Component\HttpFoundation\BinaryFileResponse;
use Symfony\Component\HttpFoundation\File\File as SymfonyFile;
use Symfony\Component\HttpFoundation\HeaderUtils;
use Symfony\Component\HttpFoundation\Response;
abstract class Utils
{
/**
* Perform file validation (checks and normalization) and store the given file
*/
public static function validateAndStoreAttachment(SymfonyFile $sfile,
string $dest_dir,
?string $title = null,
bool $is_local = true,
?int $actor_id = null): Attachment
{
// The following properly gets the mimetype with `file` or other
// available methods, so should be safe
$hash = hash_file(Attachment::FILEHASH_ALGO, $sfile->getPathname());
$file = Attachment::create([
'file_hash' => $hash,
'actor_id' => $actor_id,
'mimetype' => $sfile->getMimeType(),
'title' => $title ?: _m('Untitled attachment'),
'filename' => $hash,
'is_local' => $is_local,
]);
$sfile->move($dest_dir, $hash);
// TODO Normalize file types
return $file;
}
/**
* Include $filepath in the response, for viewing or downloading.
*
* @throws ServerException
*/
public static function sendFile(string $filepath, string $mimetype, ?string $output_filename, string $disposition = 'inline'): Response
{
$response = new BinaryFileResponse(
$filepath,
Response::HTTP_OK,
[
'Content-Description' => 'File Transfer',
'Content-Type' => $mimetype,
'Content-Disposition' => HeaderUtils::makeDisposition($disposition, $output_filename ?: _m('Untitled attachment')),
'Cache-Control' => 'public',
],
$public = true,
$disposition = null,
$add_etag = true,
$add_last_modified = true
);
if (Common::config('site', 'x_static_delivery')) {
$response->trustXSendfileTypeHeader();
}
return $response;
}
/**
* Throw a client exception if the cache key $id doesn't contain
* exactly one entry
*
* @param mixed $except
* @param mixed $id
*/
private static function error($except, $id, array $res)
{
switch (count($res)) {
case 0:
throw new $except();
case 1:
return $res[0];
default:
Log::error('Media query returned more than one result for identifier: \"' . $id . '\"');
throw new ClientException(_m('Internal server error'));
}
}
/**
* Get the file info by id
*
* Returns the file's hash, mimetype and title
*/
public static function getFileInfo(int $id)
{
return self::error(NoSuchFileException::class,
$id,
Cache::get("file-info-{$id}",
function () use ($id) {
return DB::dql('select at.file_hash, at.mimetype, at.title ' .
'from App\\Entity\\Attachment at ' .
'where at.id = :id',
['id' => $id]);
}));
}
// ----- Attachment ------
/**
* Get the attachment file info by id
*
* Returns the attachment file's hash, mimetype, title and path
*/
public static function getAttachmentFileInfo(int $id): array
{
$res = self::getFileInfo($id);
$res['file_path'] = Common::config('attachments', 'dir') . $res['file_hash'];
return $res;
}
// ----- Avatar ------
/**
* Get the avatar associated with the given nickname
*/
public static function getAvatar(?string $nickname = null): Avatar
{
$nickname = $nickname ?: Common::userNickname();
return self::error(NoAvatarException::class,
$nickname,
Cache::get("avatar-{$nickname}",
function () use ($nickname) {
return DB::dql('select a from App\\Entity\\Avatar a ' .
'join App\Entity\GSActor g with a.gsactor_id = g.id ' .
'where g.nickname = :nickname',
['nickname' => $nickname]);
}));
}
/**
* Get the cached avatar associated with the given nickname, or the current user if not given
*/
public static function getAvatarUrl(?string $nickname = null): string
{
$nickname = $nickname ?: Common::userNickname();
return Cache::get("avatar-url-{$nickname}", function () use ($nickname) {
try {
return self::getAvatar($nickname)->getUrl();
} catch (NoAvatarException $e) {
}
$package = new Package(new EmptyVersionStrategy());
return $package->getUrl(Common::config('avatar', 'default'));
});
}
/**
* Get the cached avatar file info associated with the given nickname
*
* Returns the avatar file's hash, mimetype, title and path.
* Ensures exactly one cached value exists
*/
public static function getAvatarFileInfo(string $nickname): array
{
try {
$res = self::error(NoAvatarException::class,
$nickname,
Cache::get("avatar-file-info-{$nickname}",
function () use ($nickname) {
return DB::dql('select f.file_hash, f.mimetype, f.title ' .
'from App\\Entity\\Attachment f ' .
'join App\\Entity\\Avatar a with f.id = a.file_id ' .
'join App\\Entity\\GSActor g with g.id = a.gsactor_id ' .
'where g.nickname = :nickname',
['nickname' => $nickname]);
}));
$res['file_path'] = Avatar::getFilePathStatic($res['file_hash']);
return $res;
} catch (Exception $e) {
$filepath = INSTALLDIR . '/public/assets/default-avatar.svg';
return ['file_path' => $filepath, 'mimetype' => 'image/svg+xml', 'title' => null];
}
}
}