gnu-social/components/Posting/Posting.php
Diogo Peralta Cordeiro 861732176e
[Media] Support any kind of thumbnails in the Core
Sanitize Attachments instead of Validate (part 1)
Ensure the intended filetypes and mimetypes during Vips conversions (part 1)
Various bug fixes
2021-09-14 13:13:03 +01:00

163 lines
6.3 KiB
PHP

<?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;
use App\Entity\Attachment;
use App\Entity\AttachmentToNote;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Exception\InvalidFormException;
use App\Util\Exception\RedirectException;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
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
{
/**
* "Perfect URL Regex", courtesy of https://urlregex.com/
*/
const URL_REGEX = <<<END
%(?:(?:https?|ftp)://)(?:\\S+(?::\\S*)?@|\\d{1,3}(?:\\.\\d{1,3}){3}|(?:(?:[a-z\\d\\x{00a1}-\\x{ffff}]+-?)*[a-z\\d\\x{00a1}-\\x{ffff}]+)(?:\\.(?:[a-z\\d\\x{00a1}-\\x{ffff}]+-?)*[a-z\\d\\x{00a1}-\\x{ffff}]+)*(?:\\.[a-z\\x{00a1}-\\x{ffff}]{2,6}))(?::\\d+)?(?:[^\\s]*)?%iu
END;
/**
* HTML render event handler responsible for adding and handling
* the result of adding the note submission form, only if a user is logged in
*/
public function onStartTwigPopulateVars(array &$vars): bool
{
if (($user = Common::user()) == null) {
return Event::next;
}
$actor_id = $user->getId();
$to_tags = [];
$tags = Cache::get("actor-tags-{$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;
}
$placeholder_string = ['How are you feeling?', 'Have something to share?', 'How was your day?'];
Event::handle('PostingPlaceHolderString', [&$placeholder_string]);
$rand_key = array_rand($placeholder_string);
$request = $vars['request'];
$form = Form::create([
['content', TextareaType::class, ['label' => ' ', 'data' => '', 'attr' => ['placeholder' => _m($placeholder_string[$rand_key])]]],
['attachments', FileType::class, ['label' => ' ', 'data' => null, 'multiple' => true, 'required' => false]],
['visibility', ChoiceType::class, ['label' => _m('Visibility:'), 'expanded' => true, 'data' => 'public', 'choices' => [_m('Public') => 'public', _m('Instance') => 'instance', _m('Private') => 'private']]],
['to', ChoiceType::class, ['label' => _m('To:'), 'multiple' => true, 'expanded' => true, 'choices' => $to_tags]],
['post', SubmitType::class, ['label' => _m('Post')]],
]);
$form->handleRequest($request);
if ($form->isSubmitted()) {
$data = $form->getData();
if ($form->isValid()) {
self::storeNote($actor_id, $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
*/
public static function storeNote(int $actor_id, ?string $content, array $attachments, bool $is_local, ?int $reply_to = null, ?int $repeat_of = null)
{
$note = Note::create([
'gsactor_id' => $actor_id,
'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
$processed_attachments[] = GSFile::validateAndStoreFileAsAttachment(
$f, Common::config('attachments', 'dir'),
Security::sanitize($f->getClientOriginalName()),
is_local: true, actor_id: $actor_id
);
}
$matched_urls = [];
preg_match_all(self::URL_REGEX, $content, $matched_urls, PREG_SET_ORDER);
foreach ($matched_urls as $match) {
$processed_attachments[] = GSFile::validateAndStoreURLAsAttachment($match[0]);
}
DB::persist($note);
// Need file and note ids for the next step
DB::flush();
if ($processed_attachments != []) {
foreach ($processed_attachments as $a) {
DB::persist(AttachmentToNote::create(['attachment_id' => $a->getId(), 'note_id' => $note->getId()]));
}
DB::flush();
}
}
/**
* Get a unique representation of a file on disk
*
* This can be used in the future to deduplicate images by visual content
*/
public function onHashFile(string $filename, ?string &$out_hash)
{
$out_hash = hash_file(Attachment::FILEHASH_ALGO, $filename);
return Event::stop;
}
/**
* Fill the list of allowed sizes for an attachment, to prevent potential DoS'ing by requesting thousands of different thumbnail sizes
*/
public function onGetAllowedThumbnailSizes(?array &$sizes)
{
$sizes[] = ['width' => Common::config('thumbnail', 'width'), 'height' => Common::config('thumbnail', 'height')];
return Event::next;
}
}