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[ENTITY][Note] GNU social uses Tombstones for deleted notes instead of fully removing them.

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Various corrections.
This commit is contained in:
Diogo Peralta Cordeiro 2021-12-28 06:18:59 +00:00
parent bb4149e092
commit bf4a0008ef
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GPG Key ID: 18D2D35001FBFAB0
6 changed files with 50 additions and 250 deletions
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13
components/Conversation/Conversation.php
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@ -23,6 +23,7 @@ declare(strict_types = 1);
namespace Component\Conversation;
use App\Core\Cache;
use App\Core\DB\DB;
use App\Core\Event;
use function App\Core\I18n\_m;
@ -179,4 +180,16 @@ class Conversation extends Component
}
return Event::next;
}
public function onNoteDeleteRelated(Note &$note, Actor $actor): bool
{
Cache::delete("note-replies-{$note->getId()}");
DB::wrapInTransaction(function () use ($note) {
foreach ($note->getReplies() as $reply) {
$reply->setReplyTo(null);
}
});
Cache::delete("note-replies-{$note->getId()}");
return Event::next;
}
}

16
plugins/DeleteNote/Controller/DeleteNote.php
View File

@ -43,6 +43,7 @@ class DeleteNote extends Controller
{
/**
* Create delete note view
*
* @throws ClientException
* @throws NoLoggedInUser
* @throws RedirectException
@ -57,17 +58,6 @@ class DeleteNote extends Controller
throw new NoSuchNoteException();
}
// Only let the original actor delete it
// TODO: should be anyone with permissions to do this? Admins and what not
$actor = $user->getActor();
$actor_id = $actor->getId();
if ($note->getActor()->getId() !== $actor_id) {
// Log this shenanigans and get the user redirected
Log::warning("Actor {$actor_id} attempted to delete note {$note_id} without any permissions to do so)");
throw new RedirectException('root');
}
// We made sure that the note can be deleted, lets make the form
$form_delete = Form::create([
['delete_note', SubmitType::class,
[
@ -81,7 +71,7 @@ class DeleteNote extends Controller
$form_delete->handleRequest($request);
if ($form_delete->isSubmitted()) {
if (!\is_null(\Plugin\DeleteNote\DeleteNote::deleteNote(note_id: $note_id, actor_id: $actor_id))) {
if (!\is_null(\Plugin\DeleteNote\DeleteNote::deleteNote(note_id: $note_id, actor_id: $user->getId()))) {
DB::flush();
} else {
throw new ClientException(_m('Note already deleted!'));
@ -91,7 +81,7 @@ class DeleteNote extends Controller
// Prevent open redirect
if (!\is_null($from = $this->string('from'))) {
if (Router::isAbsolute($from)) {
Log::warning("Actor {$actor_id} attempted to delete to a note and then get redirected to another host, or the URL was invalid ({$from})");
Log::warning("Actor {$user->getId()} attempted to delete to a note and then get redirected to another host, or the URL was invalid ({$from})");
throw new ClientException(_m('Can not redirect to outside the website from here'), 400); // 400 Bad request (deceptive)
} else {
// TODO anchor on element id

104
plugins/DeleteNote/DeleteNote.php
View File

@ -23,7 +23,6 @@ namespace Plugin\DeleteNote;
use App\Core\DB\DB;
use App\Core\Event;
use App\Util\Exception\BugFoundException;
use function App\Core\I18n\_m;
use App\Core\Modules\NoteHandlerPlugin;
use App\Core\Router\RouteLoader;
@ -31,11 +30,7 @@ use App\Core\Router\Router;
use App\Entity\Activity;
use App\Entity\Actor;
use App\Entity\Note;
use App\Util\Exception\DuplicateFoundException;
use App\Util\Exception\NotFoundException;
use Component\Attachment\Entity\Attachment;
use Component\Attachment\Entity\AttachmentToNote;
use Plugin\DeleteNote\Entity\DeleteNote as DeleteEntity;
use App\Util\Exception\ClientException;
use Symfony\Component\HttpFoundation\Request;
/**
@ -51,104 +46,36 @@ use Symfony\Component\HttpFoundation\Request;
*/
class DeleteNote extends NoteHandlerPlugin
{
/**
* Delete the given Note
*
* Bear in mind, in GNU social deleting a Note only replaces its content with a tombstone
* @param DeleteEntity $deleteNote
* @return bool
* @throws BugFoundException
*/
private static function undertaker(DeleteEntity $deleteNote): bool
private static function undertaker(Actor $actor, Note $note): Activity
{
$note = Note::getById($deleteNote->getNoteId());
$actor = Actor::getById($deleteNote->getActorId());
// Only let the original actor delete it
// TODO: should be anyone with permissions to do this? Admins and what not
// TODO: Let actors of appropriate role do this as well
if ($note->getActor()->getId() !== $actor->getId()) {
return false;
throw new ClientException(_m('You don\'t have permissions to delete this note.'), 401);
}
// Create note tombstone to be rendered in a bit
$time_deleted = $deleteNote->getCreated();
$deletion_time = date_format($time_deleted, 'Y/m/d H:i:s');
$note->setModified($time_deleted);
$note_tombstone = "Actor {$actor->getUrl()} deleted this note at {$deletion_time}";
$note->setContent($note_tombstone);
// TODO: set note url with a new route, stating the note was deleted
// Get note attachments
$note_attachments = $note->getAttachments();
// Remove every relation this note has to its attachments
AttachmentToNote::removeWhereNoteId($note->getId());
// Iterate through all note attachments to decrement their lives
foreach ($note_attachments as $attachment_entity) {
if ($attachment_entity->livesDecrementAndGet() <= 0) {
// Remove attachment from DB if there are no lives remaining
DB::remove($attachment_entity);
} else {
// This means it can live... for now
DB::merge($attachment_entity);
}
}
// Flush DB, a lot of stuff happened
DB::flush();
// Get the note rendered with tombstone text
// TODO: not sure if I put the actor as a mention here
$mentions = [];
$rendered = null;
Event::handle('RenderNoteContent', [$note_tombstone, 'text/plain', &$rendered, $actor, $note->getLanguageLocale(), &$mentions]);
$note->setRendered($rendered);
// Apply changes to Note and flush
DB::merge($note);
DB::flush();
// Undertaker believes the actor can terminate this note
$activity = $note->delete(actor: $actor, source: 'web');
// Undertaker successful
return true;
Event::handle('NewNotification', [$actor, $activity, [], "{$actor->getNickname()} deleted note {$activity->getObjectId()}"]);
return $activity;
}
public static function deleteNote(int $note_id, int $actor_id, string $source = 'web'): ?Activity
{
$opts = ['note_id' => $note_id, 'actor_id' => $actor_id];
$activity = null;
// Try and find if note was already deleted
try {
DB::findOneBy('delete_note', $opts);
} catch (DuplicateFoundException $e) {
} catch (NotFoundException $e) {
if (\is_null(DB::findOneBy(Activity::class, ['verb' => 'delete', 'object_type' => 'note', 'object_id' => $note_id], return_null: true))) {
// If none found, then undertaker has a job to do
$delete_entity = DeleteEntity::create($opts);
if (self::undertaker($delete_entity)) {
// Undertaker believes the actor can terminate this note
// We should persist this entity then
DB::persist($delete_entity);
// TODO: "the server MAY replace the object with a Tombstone of the object"
// not sure if I can do that yet?
$activity = Activity::create([
'actor_id' => $actor_id,
'verb' => 'delete',
'object_type' => 'note',
'object_id' => $note_id,
'source' => $source,
]);
DB::persist($activity);
Event::handle('NewNotification', [$actor = Actor::getById($actor_id), $activity, [], "{$actor->getNickname()} deleted note {$note_id}"]);
}
return self::undertaker(Actor::getById($actor_id), Note::getById($note_id));
} else {
return null;
}
return $activity;
}
public function onAddRoute(RouteLoader $r)
{
$r->connect(id: 'delete_note_action', uri_path: '/object/note/{note_id<\d+>}/delete', target: Controller\DeleteNote::class);
//$r->connect(id: 'note_deleted', uri_path: '/object/note/{note_id<\d+>}/404', target: Controller\DeleteNote::class);
return Event::next;
}
@ -156,10 +83,8 @@ class DeleteNote extends NoteHandlerPlugin
public function onAddExtraNoteActions(Request $request, Note $note, array &$actions)
{
// Only add action if note wasn't already deleted!
try {
DB::findOneBy('delete_note', ['note_id' => $note->getId()]);
} catch (NotFoundException $e) {
$delete_action_url = Router::url('delete_note', ['note_id' => $note->getId()]);
if (\is_null(DB::findOneBy(Activity::class, ['verb' => 'delete', 'object_type' => 'note', 'object_id' => $note->getId()], return_null: true))) {
$delete_action_url = Router::url('delete_note_action', ['note_id' => $note->getId()]);
$query_string = $request->getQueryString();
$delete_action_url .= '?from=' . mb_substr($query_string, 2);
$actions[] = [
@ -167,7 +92,6 @@ class DeleteNote extends NoteHandlerPlugin
'classes' => '',
'url' => $delete_action_url,
];
} catch (DuplicateFoundException $e) {
}
return Event::next;

129
plugins/DeleteNote/Entity/DeleteNote.php
View File

@ -1,129 +0,0 @@
<?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 Plugin\DeleteNote\Entity;
use App\Core\Entity;
/**
* DeleteNote entity
*
* Stores the Note id and Actor who performed the action upon deletion of Note
*
* @package GNUsocial
* @category DeleteNote
*
* @author Eliseu Amaro <mail@eliseuama.ro>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class DeleteNote extends Entity
{
// {{{ Autocode
// @codeCoverageIgnoreStart
private int $id;
private int $note_id;
private int $actor_id;
private \DateTimeInterface $created;
private \DateTimeInterface $modified;
public function setId(int $id): self
{
$this->id = $id;
return $this;
}
public function getId(): int
{
return $this->id;
}
public function setNoteId(int $note_id): self
{
$this->note_id = $note_id;
return $this;
}
public function getNoteId(): int
{
return $this->note_id;
}
public function setActorId(int $actor_id): self
{
$this->actor_id = $actor_id;
return $this;
}
public function getActorId(): int
{
return $this->actor_id;
}
public function setCreated(\DateTimeInterface $created): self
{
$this->created = $created;
return $this;
}
public function getCreated(): \DateTimeInterface
{
return $this->created;
}
public function setModified(\DateTimeInterface $modified): self
{
$this->modified = $modified;
return $this;
}
public function getModified(): \DateTimeInterface
{
return $this->modified;
}
// @codeCoverageIgnoreEnd
// }}} Autocode
public static function schemaDef(): array
{
return [
'name' => 'delete_note',
'fields' => [
'id' => ['type' => 'serial', 'not null' => true, 'description' => 'Serial identifier'],
'note_id' => ['type' => 'int', 'foreign key' => true, 'target' => 'Note.id', 'multiplicity' => 'one to one', 'not null' => true, 'description' => 'Deleted Note identifier'],
'actor_id' => ['type' => 'int', 'foreign key' => true, 'target' => 'Actor.id', 'multiplicity' => 'one to one', 'not null' => true, 'description' => 'Actor who deleted the Note'],
'created' => ['type' => 'datetime', 'not null' => true, 'description' => 'date this record was created', 'default' => 'CURRENT_TIMESTAMP'],
'modified' => ['type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified', 'default' => 'CURRENT_TIMESTAMP'],
],
'primary key' => ['id'],
'foreign keys' => [
'note_id_to_id_fkey' => ['note', ['note_id' => 'id']],
'actor_id_to_id_fkey' => ['actor', ['actor_id' => 'id']],
],
'indexes' => [
'deleted_note_id_idx' => ['note_id'],
],
];
}
}

11
src/Controller/Note.php
View File

@ -26,6 +26,7 @@ namespace App\Controller;
use App\Core\Controller;
use App\Core\DB\DB;
use function App\Core\I18n\_m;
use App\Entity\Activity;
use App\Util\Common;
use App\Util\Exception\ClientException;
use Symfony\Component\HttpFoundation\Request;
@ -37,9 +38,13 @@ class Note extends Controller
*/
private function note(int $id, callable $handle)
{
$note = DB::findOneBy('note', ['id' => $id]);
if (empty($note)) {
throw new ClientException(_m('No such note.'), 404);
$note = DB::findOneBy('note', ['id' => $id], return_null: true);
if (\is_null($note)) {
if (!\is_null(DB::findOneBy(Activity::class, ['verb' => 'delete', 'object_type' => 'note', 'object_id' => $id], return_null: true))) {
throw new ClientException(_m('Note deleted.'), 410);
} else {
throw new ClientException(_m('No such note.'), 404);
}
} else {
if ($note->isVisibleTo(Common::actor())) {
return $handle($note);

27
src/Entity/Note.php
View File

@ -35,6 +35,7 @@ use Component\Avatar\Avatar;
use Component\Conversation\Entity\Conversation;
use Component\Language\Entity\Language;
use DateTimeInterface;
use function App\Core\I18n\_m;
/**
* Entity for notices
@ -475,22 +476,18 @@ class Note extends Entity
return $mentioned;
}
public function delete(?int $actor_id = null, string $source = 'web'): bool
public function delete(?Actor $actor = null, string $source = 'web'): Activity
{
if (Event::handle('NoteDeleteRelated', [&$this]) === Event::next) {
DB::persist(
Activity::create([
'actor_id' => $actor_id ?? $this->getActorId(),
'verb' => 'delete',
'object_type' => 'note',
'object_id' => $this->getId(),
'source' => $source,
]),
);
DB::remove($this);
return true;
}
return false;
Event::handle('NoteDeleteRelated', [&$this, $actor]);
DB::persist($activity = Activity::create([
'actor_id' => $actor->getId(),
'verb' => 'delete',
'object_type' => 'note',
'object_id' => $this->getId(),
'source' => $source,
]));
DB::remove(DB::findOneBy(self::class, ['id' => $this->id]));
return $activity;
}
public static function schemaDef(): array