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\Core\Security;
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use App\Entity\Actor;
use App\Entity\ActorToAttachment;
use App\Entity\Attachment;
use App\Entity\AttachmentToNote;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Exception\ClientException;
use App\Util\Exception\InvalidFormException;
use App\Util\Exception\RedirectException;
use App\Util\Exception\ServerException;
use App\Util\Formatting;
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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 onAppendRightPostingBlock(array $vars, array &$res): 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}",
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fn () => DB::dql('select c.tag from App\Entity\ActorCircle 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]);
$available_content_types = ['Plain Text' => 'text/plain'];
Event::handle('PostingAvailableContentTypes', [&$available_content_types]);
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$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' => $to_tags]],
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];
if (count($available_content_types) > 1) {
$form_params[] = ['content_type', ChoiceType::class,
['label' => _m('Text format:'), 'multiple' => false, 'expanded' => false,
'data' => $available_content_types[array_key_first($available_content_types)],
'choices' => $available_content_types, ], ];
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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()) {
$content_type = $data['content_type'] ?? $available_content_types[array_key_first($available_content_types)];
self::storeLocalNote($user->getActor(), $data['content'], $content_type, $data['attachments']);
throw new RedirectException();
} else {
throw new InvalidFormException();
}
}
$res = $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
*
* @param Actor $actor
* @param string $content
* @param string $content_type
* @param array $attachments
* @param null|Note $reply_to
* @param null|Note $repeat_of
*
* @throws ClientException
* @throws ServerException
*/
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public static function storeLocalNote(Actor $actor, string $content, string $content_type, array $attachments, ?Note $reply_to = null, ?Note $repeat_of = null)
{
$rendered = null;
Event::handle('RenderNoteContent', [$content, $content_type, &$rendered, $actor, $reply_to]);
$note = Note::create([
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'actor_id' => $actor->getId(),
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'content' => $content,
'content_type' => $content_type,
'rendered' => $rendered,
'is_local' => true,
]);
$processed_attachments = [];
/** @var \Symfony\Component\HttpFoundation\File\UploadedFile[] $attachments */
foreach ($attachments as $f) {
$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->getId()]);
$processed_attachments[] = [GSFile::sanitizeAndStoreFileAsAttachment($f), $f->getClientOriginalName()];
}
DB::persist($note);
// Need file and note ids for the next step
Event::handle('ProcessNoteContent', [$note, $content, $content_type]);
DB::flush();
if ($processed_attachments != []) {
foreach ($processed_attachments as [$a, $fname]) {
if (DB::count('actor_to_attachment', $args = ['attachment_id' => $a->getId(), 'actor_id' => $actor->getId()]) === 0) {
DB::persist(ActorToAttachment::create($args));
}
DB::persist(AttachmentToNote::create(['attachment_id' => $a->getId(), 'note_id' => $note->getId(), 'title' => $fname]));
}
}
}
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public function onRenderNoteContent(string $content, string $content_type, ?string &$rendered, Actor $author, ?Note $reply_to = null)
{
switch ($content_type) {
case 'text/plain':
$rendered = Formatting::renderPlainText($content);
$rendered = Formatting::linkifyMentions($rendered, $author, $reply_to);
return Event::stop;
case 'text/html':
// TODO: It has to linkify and stuff as well
$rendered = Security::sanitize($content);
return Event::stop;
default:
return Event::next;
}
}
/**
* 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;
}
}