gnu-social/components/Posting/Posting.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 Component\Posting;
use App\Core\Cache;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\Form;
use App\Core\GSFile;
use function App\Core\I18n\_m;
use App\Core\Modules\Component;
use App\Entity\Attachment;
use App\Entity\AttachmentToNote;
use App\Entity\GSActorToAttachment;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Exception\ClientException;
use App\Util\Exception\DuplicateFoundException;
use App\Util\Exception\InvalidFormException;
use App\Util\Exception\RedirectException;
use App\Util\Exception\ServerException;
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use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
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use Symfony\Component\Form\Extension\Core\Type\FileType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Extension\Core\Type\TextareaType;
class Posting extends Component
{
/**
* HTML render event handler responsible for adding and handling
* the result of adding the note submission form, only if a user is logged in
*
* @throws ClientException
* @throws RedirectException
* @throws ServerException
*/
public function onStartTwigPopulateVars(array &$vars): bool
{
if (($user = Common::user()) == null) {
return Event::next;
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}
$actor_id = $user->getId();
$to_tags = [];
$tags = Cache::get("actor-circle-{$actor_id}", function () use ($actor_id) {
return DB::dql('select c.tag from App\Entity\GSActorCircle c where c.tagger = :tagger', ['tagger' => $actor_id]);
});
foreach ($tags as $t) {
$t = $t['tag'];
$to_tags[$t] = $t;
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}
$placeholder_strings = ['How are you feeling?', 'Have something to share?', 'How was your day?'];
Event::handle('PostingPlaceHolderString', [&$placeholder_strings]);
$placeholder = $placeholder_strings[array_rand($placeholder_strings)];
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$initial_content = '';
Event::handle('PostingInitialContent', [&$initial_content]);
$content_type = ['Plain Text' => 'text/plain'];
Event::handle('PostingAvailableContentTypes', [&$content_type]);
$request = $vars['request'];
$form_params = [
['content', TextareaType::class, ['label' => _m('Content:'), 'data' => $initial_content, 'attr' => ['placeholder' => _m($placeholder)]]],
['attachments', FileType::class, ['label' => _m('Attachments:'), 'data' => null, 'multiple' => true, 'required' => false]],
['visibility', ChoiceType::class, ['label' => _m('Visibility:'), 'multiple' => false, 'expanded' => false, 'data' => 'public', 'choices' => [_m('Public') => 'public', _m('Instance') => 'instance', _m('Private') => 'private']]],
['to', ChoiceType::class, ['label' => _m('To:'), 'multiple' => false, 'expanded' => false, 'choices' => $to_tags]],
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];
if (count($content_type) > 1) {
$form_params[] = ['content_type', ChoiceType::class, ['label' => _m('Text format:'), 'multiple' => false, 'expanded' => false, 'data' => 'text/plain', 'choices' => $content_type]];
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}
$form_params[] = ['post_note', SubmitType::class, ['label' => _m('Post')]];
$form = Form::create($form_params);
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$form->handleRequest($request);
if ($form->isSubmitted()) {
$data = $form->getData();
if ($form->isValid()) {
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self::storeNote($actor_id, $data['content_type'] ?? array_key_first($content_type), $data['content'], $data['attachments'], is_local: true);
throw new RedirectException();
} else {
throw new InvalidFormException();
}
}
$vars['post_form'] = $form->createView();
return Event::next;
}
/**
* Store the given note with $content and $attachments, created by
* $actor_id, possibly as a reply to note $reply_to and with flag
* $is_local. Sanitizes $content and $attachments
*
* @throws DuplicateFoundException
* @throws ClientException|ServerException
*/
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public static function storeNote(int $actor_id, string $content_type, string $content, array $attachments, bool $is_local, ?int $reply_to = null, ?int $repeat_of = null)
{
$note = Note::create([
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'gsactor_id' => $actor_id,
'content_type' => $content_type,
'content' => $content,
'is_local' => $is_local,
'reply_to' => $reply_to,
'repeat_of' => $repeat_of,
]);
$processed_attachments = [];
foreach ($attachments as $f) { // where $f is a Symfony\Component\HttpFoundation\File\UploadedFile
$filesize = $f->getSize();
$max_file_size = Common::config('attachments', 'file_quota');
if ($max_file_size < $filesize) {
throw new ClientException(_m('No file may be larger than {quota} bytes and the file you sent was {size} bytes. ' .
'Try to upload a smaller version.', ['quota' => $max_file_size, 'size' => $filesize]));
}
Event::handle('EnforceUserFileQuota', [$filesize, $actor_id]);
$processed_attachments[] = [GSFile::sanitizeAndStoreFileAsAttachment($f), $f->getClientOriginalName()];
}
DB::persist($note);
// Need file and note ids for the next step
DB::flush();
if ($processed_attachments != []) {
foreach ($processed_attachments as [$a, $fname]) {
if (empty(DB::findBy('gsactor_to_attachment', ['attachment_id' => $a->getId(), 'gsactor_id' => $actor_id]))) {
DB::persist(GSActorToAttachment::create(['attachment_id' => $a->getId(), 'gsactor_id' => $actor_id]));
}
DB::persist(AttachmentToNote::create(['attachment_id' => $a->getId(), 'note_id' => $note->getId(), 'title' => $fname]));
}
DB::flush();
}
Event::handle('ProcessNoteContent', [$note->getId(), $content]);
}
/**
* Get a unique representation of a file on disk
*
* This can be used in the future to deduplicate images by visual content
*
* @param string $filename
* @param null|string $out_hash
*
* @return bool
*/
public function onHashFile(string $filename, ?string &$out_hash): bool
{
$out_hash = hash_file(Attachment::FILEHASH_ALGO, $filename);
return Event::stop;
}
/**
* Fill the list with allowed sizes for an attachment, to prevent potential DoS'ing by requesting thousands of different thumbnail sizes
*
* @param null|array $sizes
*
* @return bool
*/
public function onGetAllowedThumbnailSizes(?array &$sizes): bool
{
$sizes[] = ['width' => Common::config('thumbnail', 'width'), 'height' => Common::config('thumbnail', 'height')];
return Event::next;
}
}