<?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/>.
// }}}
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
* @category ActivityPub
*
* @author Diogo Peralta Cordeiro <@diogo.site>
* @copyright 2018-2019, 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Entity;
use App\Core\Cache;
use App\Core\DB;
use App\Core\Entity;
use function App\Core\I18n\_m;
use App\Core\Log;
use App\Entity\Actor;
use Component\FreeNetwork\Util\Discovery;
use DateTimeInterface;
use Exception;
use Plugin\ActivityPub\Util\DiscoveryHints;
use Plugin\ActivityPub\Util\Explorer;
use XML_XRD;
/**
* Table Definition for activitypub_actor
*
* @copyright 2018-2019, 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class ActivitypubActor extends Entity
{
// {{{ Autocode
// @codeCoverageIgnoreStart
private string $uri;
private int $actor_id;
private string $inbox_uri;
private ?string $inbox_shared_uri = null;
private ?string $url = null;
private DateTimeInterface $created;
private DateTimeInterface $modified;
public function setUri(string $uri): self
{
$this->uri = $uri;
return $this;
}
public function getUri(): string
{
return $this->uri;
}
public function setActorId(int $actor_id): self
{
$this->actor_id = $actor_id;
return $this;
}
public function getActorId(): int
{
return $this->actor_id;
}
public function setInboxUri(string $inbox_uri): self
{
$this->inbox_uri = $inbox_uri;
return $this;
}
public function getInboxUri(): string
{
return $this->inbox_uri;
}
public function setInboxSharedUri(?string $inbox_shared_uri): self
{
$this->inbox_shared_uri = $inbox_shared_uri;
return $this;
}
public function getInboxSharedUri(): ?string
{
return $this->inbox_shared_uri;
}
public function setUrl(?string $url): self
{
$this->url = $url;
return $this;
}
public function getUrl(): ?string
{
return $this->url;
}
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 $this->modified;
}
// @codeCoverageIgnoreEnd
// }}} Autocode
public function getActor(): Actor
{
return Actor::getById($this->getActorId());
}
/**
* Look up, and if necessary create, an Activitypub_profile for the remote
* entity with the given WebFinger address.
* This should never return null -- you will either get an object or
* an exception will be thrown.
*
* @param string $addr WebFinger address
*
* @throws Exception on error conditions
*/
public static function getByAddr(string $addr): Actor
{
// Normalize $addr, i.e. add 'acct:' if missing
$addr = Discovery::normalize($addr);
// Try the cache
$uri = Cache::get(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), fn () => false);
if ($uri !== false) {
if (\is_null($uri)) {
// TRANS: Exception.
throw new Exception(_m('Not a valid WebFinger address (via cache).'));
}
try {
return DB::wrapInTransaction(fn () => Explorer::getOneFromUri($uri));
} catch (Exception $e) {
Log::error(sprintf(__METHOD__ . ': WebFinger address cache inconsistent with database, did not find Activitypub_profile uri==%s', $uri), [$e]);
Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), false);
}
}
// Now, try some discovery
$disco = new Discovery();
try {
$xrd = $disco->lookup($addr);
} catch (Exception $e) {
// Save negative cache entry so we don't waste time looking it up again.
// @todo FIXME: Distinguish temporary failures?
Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), null);
// TRANS: Exception.
throw new Exception(_m('Not a valid WebFinger address: ' . $e->getMessage()));
}
return self::fromXrd($addr, $xrd);
}
public static function fromXrd(string $addr, XML_XRD $xrd): Actor
{
$hints = array_merge(
['webfinger' => $addr],
DiscoveryHints::fromXRD($xrd),
);
if (\array_key_exists('activitypub', $hints)) {
$uri = $hints['activitypub'];
try {
LOG::info("Discovery on acct:{$addr} with URI:{$uri}");
$actor = DB::wrapInTransaction(fn () => Explorer::getOneFromUri($hints['activitypub']));
Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), $hints['activitypub']);
return $actor;
} catch (Exception $e) {
Log::warning("Failed creating profile from URI:'{$uri}', error:" . $e->getMessage());
throw $e;
// keep looking
//
// @todo FIXME: This means an error discovering from profile page
// may give us a corrupt entry using the webfinger URI, which
// will obscure the correct page-keyed profile later on.
}
}
// XXX: try hcard
// XXX: try FOAF
// TRANS: Exception. %s is a WebFinger address.
throw new Exception(sprintf(_m('Could not find a valid profile for "%s".'), $addr));
}
/**
* @param ActivitypubActor $ap_actor
*
* @throws Exception
*/
public static function update_profile(
self &$ap_actor,
Actor &$actor,
ActivitypubRsa &$activitypub_rsa,
string $res,
): void {
\Plugin\ActivityPub\Util\Model\Actor::fromJson($res, ['objects' => [
'ActivitypubActor' => &$ap_actor,
'Actor' => &$actor,
'ActivitypubRsa' => &$activitypub_rsa,
]]);
}
public static function schemaDef(): array
{
return [
'name' => 'activitypub_actor',
'fields' => [
'uri' => ['type' => 'text', 'not null' => true],
'actor_id' => ['type' => 'int', 'not null' => true],
'inbox_uri' => ['type' => 'text', 'not null' => true],
'inbox_shared_uri' => ['type' => 'text'],
'url' => ['type' => 'text'],
'created' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was created'],
'modified' => ['type' => 'timestamp', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
],
'primary key' => ['uri'],
'unique keys' => [
'activitypub_actor_id_ukey' => ['actor_id'],
],
'foreign keys' => [
'activitypub_actor_actor_id_fkey' => ['actor', ['actor_id' => 'id']],
],
];
}
}