gnu-social/src/Controller/Attachment.php

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<?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 App\Controller;
use App\Core\Controller;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\GSFile;
use App\Core\Router\Router;
use App\Entity\AttachmentThumbnail;
use App\Util\Common;
use App\Util\Exception\ClientException;
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use App\Util\Exception\NotFoundException;
use App\Util\Exception\ServerException;
use Symfony\Component\HttpFoundation\HeaderUtils;
use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
class Attachment extends Controller
{
private function attachment(int $id, callable $handle)
{
if (Event::handle('AttachmentFileInfo', [$id, &$res]) != Event::stop) {
// If no one else claims this attachment, use the default representation
$res = GSFile::getAttachmentFileInfo($id);
}
if (!empty($res)) {
return $handle($res);
} else {
throw new ClientException('No such attachment', 404);
}
}
/**
* The page where the attachment and it's info is shown
*/
public function attachment_show(Request $request, int $id)
{
try {
$attachment = DB::findOneBy('attachment', ['id' => $id]);
return $this->attachment($id, function ($res) use ($id, $attachment) {
return [
'_template' => 'attachments/show.html.twig',
'title' => $res['title'],
'download' => Router::url('attachment_download', ['id' => $id]),
'attachment' => $attachment,
'related_notes' => DB::dql('select n from attachment_to_note an ' .
'join note n with n.id = an.note_id ' .
'where an.attachment_id = :attachment_id', ['attachment_id' => $id]),
'related_tags' => DB::dql('select distinct t.tag ' .
'from attachment_to_note an join note_tag t with an.note_id = t.note_id ' .
'where an.attachment_id = :attachment_id', ['attachment_id' => $id]),
];
});
} catch (NotFoundException) {
throw new ClientException('No such attachment', 404);
}
}
/**
* Display the attachment inline
*/
public function attachment_view(Request $request, int $id)
{
return $this->attachment($id, fn (array $res) => GSFile::sendFile($res['filepath'], $res['mimetype'], $res['title'], HeaderUtils::DISPOSITION_INLINE));
}
public function attachment_download(Request $request, int $id)
{
return $this->attachment($id, fn (array $res) => GSFile::sendFile($res['filepath'], $res['mimetype'], $res['title'], HeaderUtils::DISPOSITION_ATTACHMENT));
}
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/**
* Controller to produce a thumbnail for a given attachment id
*
* @param Request $request
* @param int $id Attachment ID
*
* @throws NotFoundException
* @throws ServerException
*
* @return Response
*/
public function attachment_thumbnail(Request $request, int $id): Response
{
$attachment = DB::findOneBy('attachment', ['id' => $id]);
if (!is_null($attachment->getScope())) {
// && ($attachment->scope | VisibilityScope::PUBLIC) != 0
// $user = Common::ensureLoggedIn();
assert(false, 'Attachment scope not implemented');
}
// TODO rate limit, limit to known sizes
$max_width = Common::config('thumbnail', 'width');
$max_height = Common::config('thumbnail', 'height');
$width = Common::clamp($this->int('w') ?: $max_width, min: 0, max: $max_width);
$height = Common::clamp($this->int('h') ?: $max_height, min: 0, max: $max_height);
$crop = $this->bool('c') ?: false;
$thumbnail = AttachmentThumbnail::getOrCreate(attachment: $attachment, width: $width, height: $height, crop: $crop);
$filename = $thumbnail->getFilename();
$path = $thumbnail->getPath();
return GSFile::sendFile(filepath: $path, mimetype: $attachment->getMimetype(), output_filename: $filename, disposition: 'inline');
}
}