forked from GNUsocial/gnu-social
Hugo Sales
f388554166
Currently, we simply hash the contents of the file with sha256, but in the future we can use something smarter, which could find visual feature similarity between images
154 lines
5.8 KiB
PHP
154 lines
5.8 KiB
PHP
<?php
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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namespace Component\Posting;
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use App\Core\Cache;
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use App\Core\DB\DB;
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use App\Core\Event;
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use App\Core\Form;
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use App\Core\GSFile;
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use function App\Core\I18n\_m;
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use App\Core\Modules\Component;
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use App\Core\Security;
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use App\Entity\Attachment;
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use App\Entity\AttachmentToNote;
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use App\Entity\Note;
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use App\Util\Common;
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use App\Util\Exception\InvalidFormException;
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use App\Util\Exception\RedirectException;
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use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
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use Symfony\Component\Form\Extension\Core\Type\FileType;
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use Symfony\Component\Form\Extension\Core\Type\SubmitType;
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use Symfony\Component\Form\Extension\Core\Type\TextareaType;
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class Posting extends Component
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{
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/**
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* "Perfect URL Regex", courtesy of https://urlregex.com/
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*/
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const URL_REGEX = <<<END
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%(?:(?: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
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END;
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/**
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* HTML render event handler responsible for adding and handling
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* the result of adding the note submission form, only if a user is logged in
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*/
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public function onStartTwigPopulateVars(array &$vars): bool
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{
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if (($user = Common::user()) == null) {
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return Event::next;
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}
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$actor_id = $user->getId();
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$to_tags = [];
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$tags = Cache::get("actor-tags-{$actor_id}", function () use ($actor_id) {
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return DB::dql('select c.tag from App\Entity\GSActorCircle c where c.tagger = :tagger', ['tagger' => $actor_id]);
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});
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foreach ($tags as $t) {
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$t = $t['tag'];
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$to_tags[$t] = $t;
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}
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$placeholder_string = ['How are you feeling?', 'Have something to share?', 'How was your day?'];
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$rand_key = array_rand($placeholder_string);
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$request = $vars['request'];
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$form = Form::create([
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['content', TextareaType::class, ['label' => ' ', 'data' => '', 'attr' => ['placeholder' => _m($placeholder_string[$rand_key])]]],
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['attachments', FileType::class, ['label' => ' ', 'data' => null, 'multiple' => true, 'required' => false]],
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['visibility', ChoiceType::class, ['label' => _m('Visibility:'), 'expanded' => true, 'choices' => [_m('Public') => 'public', _m('Instance') => 'instance', _m('Private') => 'private']]],
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['to', ChoiceType::class, ['label' => _m('To:'), 'multiple' => true, 'expanded' => true, 'choices' => $to_tags]],
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['post', SubmitType::class, ['label' => _m('Post')]],
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]);
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$form->handleRequest($request);
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if ($form->isSubmitted()) {
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$data = $form->getData();
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if ($form->isValid()) {
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self::storeNote($actor_id, $data['content'], $data['attachments'], $is_local = true);
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throw new RedirectException();
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} else {
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throw new InvalidFormException();
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}
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}
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$vars['post_form'] = $form->createView();
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return Event::next;
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}
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/**
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* Store the given note with $content and $attachments, created by
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* $actor_id, possibly as a reply to note $reply_to and with flag
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* $is_local. Sanitizes $content and $attachments
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*/
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public static function storeNote(int $actor_id, ?string $content, array $attachments, bool $is_local, ?int $reply_to = null, ?int $repeat_of = null)
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{
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$content = Security::sanitize($content);
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$note = Note::create([
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'gsactor_id' => $actor_id,
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'content' => $content,
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'is_local' => $is_local,
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'reply_to' => $reply_to,
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'repeat_of' => $repeat_of,
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]);
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$processed_attachments = [];
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foreach ($attachments as $f) {
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$processed_attachments[] = GSFile::validateAndStoreAttachment(
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$f, Common::config('attachments', 'dir'),
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Security::sanitize($f->getClientOriginalName()),
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is_local: true, actor_id: $actor_id
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);
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}
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$matched_urls = [];
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preg_match_all(self::URL_REGEX, $content, $matched_urls, PREG_SET_ORDER);
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foreach ($matched_urls as $match) {
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$processed_attachments[] = GSFile::validateAndStoreURL($match[0]);
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}
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DB::persist($note);
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// Need file and note ids for the next step
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DB::flush();
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if ($processed_attachments != []) {
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foreach ($processed_attachments as $a) {
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DB::persist(AttachmentToNote::create(['attachment_id' => $a->getId(), 'note_id' => $note->getId()]));
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}
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DB::flush();
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}
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}
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/**
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* Get a unique representation of a file on disk
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*
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* This can be used in the future to deduplicate images by visual content
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*/
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public static function onHashFile(string $filename, ?string &$out_hash)
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{
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$out_hash = hash_file(Attachment::FILEHASH_ALGO, $filename);
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return Event::stop;
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}
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}
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