gnu-social/components/Attachment/Controller/Attachment.php

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<?php
declare(strict_types = 1);
// {{{ 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\Attachment\Controller;
use App\Core\Controller;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\GSFile;
use function App\Core\I18n\_m;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Exception\ClientException;
use App\Util\Exception\NoSuchFileException;
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use App\Util\Exception\NotFoundException;
use App\Util\Exception\ServerException;
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use Component\Attachment\Entity\AttachmentThumbnail;
use Component\Attachment\Entity\AttachmentToNote;
use Symfony\Component\HttpFoundation\HeaderUtils;
use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Mime\MimeTypes;
class Attachment extends Controller
{
/**
* Generic function that handles getting a representation for an attachment
*/
private function attachment(int $attachment_id, Note|int $note, callable $handle)
{
$attachment = DB::findOneBy('attachment', ['id' => $attachment_id]);
$note = \is_int($note) ? Note::getById($note) : $note;
// Before anything, two very important things!
// first: ensure this attachment is associated with this note
if (DB::count(AttachmentToNote::class, ['attachment_id' => $attachment->getId(), 'note_id' => $note->getId()]) <= 0) {
throw new ClientException(_m('No such attachment.'), 404);
}
// second: ensure proper scope
if (!$note->isVisibleTo(Common::actor())) {
throw new ClientException(_m('You don\'t have permissions to view this attachment.'), 401);
}
$res = null;
if (Event::handle('AttachmentFileInfo', [$attachment, $note, &$res]) !== Event::stop) {
// If no one else claims this attachment, use the default representation
try {
$res = GSFile::getAttachmentFileInfo($attachment_id);
} catch (NoSuchFileException $e) {
// Continue below
}
}
if (empty($res)) {
throw new ClientException(_m('No such attachment'), 404);
} else {
if (!\array_key_exists('filepath', $res)) {
// @codeCoverageIgnoreStart
throw new ServerException('This attachment is not stored locally.');
// @codeCoverageIgnoreEnd
} else {
$res['attachment'] = $attachment;
$res['note'] = $note;
$res['title'] = $attachment->getBestTitle($note);
return $handle($res);
}
}
}
/**
* The page where the attachment and it's info is shown
*/
public function attachmentShowWithNote(Request $request, int $note_id, int $attachment_id)
{
try {
return $this->attachment($attachment_id, $note_id, function ($res) use ($note_id, $attachment_id) {
return [
'_template' => 'attachment/view.html.twig',
'download' => $res['attachment']->getDownloadUrl(note: $note_id),
'title' => $res['title'],
'attachment' => $res['attachment'],
'note' => $res['note'],
'right_panel_vars' => ['attachment_id' => $attachment_id, 'note_id' => $note_id],
];
});
} catch (NotFoundException) {
throw new ClientException(_m('No such attachment.'), 404);
}
}
/**
* Display the attachment inline
*/
public function attachmentViewWithNote(Request $request, int $note_id, int $attachment_id)
{
return $this->attachment(
$attachment_id,
$note_id,
fn (array $res) => GSFile::sendFile(
$res['filepath'],
$res['mimetype'],
GSFile::ensureFilenameWithProperExtension($res['title'], $res['mimetype']) ?? $res['filename'],
HeaderUtils::DISPOSITION_INLINE,
),
);
}
public function attachmentDownloadWithNote(Request $request, int $note_id, int $attachment_id)
{
return $this->attachment(
$attachment_id,
$note_id,
fn (array $res) => GSFile::sendFile(
$res['filepath'],
$res['mimetype'],
GSFile::ensureFilenameWithProperExtension($res['title'], $res['mimetype']) ?? $res['filename'],
HeaderUtils::DISPOSITION_ATTACHMENT,
),
);
}
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/**
* Controller to produce a thumbnail for a given attachment id
*
* @param int $attachment_id Attachment ID
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*
* @throws \App\Util\Exception\DuplicateFoundException
* @throws ClientException
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* @throws NotFoundException
* @throws ServerException
*/
public function attachmentThumbnailWithNote(Request $request, int $note_id, int $attachment_id, string $size = 'small'): Response
{
$attachment = DB::findOneBy('attachment', ['id' => $attachment_id]);
$note = Note::getById($note_id);
// Before anything, two very important things!
// first: ensure this attachment is associated with this note
if (DB::count(AttachmentToNote::class, ['attachment_id' => $attachment->getId(), 'note_id' => $note->getId()]) <= 0) {
throw new ClientException(_m('No such attachment.'), 404);
}
// second: ensure proper scope
if (!$note->isVisibleTo(Common::actor())) {
throw new ClientException(_m('You don\'t have permissions to view this attachment.'), 401);
}
$crop = Common::config('thumbnail', 'smart_crop');
$thumbnail = AttachmentThumbnail::getOrCreate(attachment: $attachment, size: $size, crop: $crop);
if (\is_null($thumbnail)) {
throw new ClientException(_m('Can not generate thumbnail for attachment with id={id}', ['id' => $attachment->getId()]));
}
$filename = $thumbnail->getFilename();
$path = $thumbnail->getPath();
$mimetype = $thumbnail->getMimetype();
return GSFile::sendFile(filepath: $path, mimetype: $mimetype, output_filename: $filename . '.' . MimeTypes::getDefault()->getExtensions($mimetype)[0], disposition: HeaderUtils::DISPOSITION_INLINE);
}
}