260 lines
8.1 KiB
PHP
260 lines
8.1 KiB
PHP
<?php
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declare(strict_types = 1);
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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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/**
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* ActivityPub implementation for GNU social
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*
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* @package GNUsocial
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*
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* @author Diogo Peralta Cordeiro <mail@diogo.site
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* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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namespace Plugin\ActivityPub\Entity;
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use App\Core\Cache;
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use App\Core\Entity;
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use function App\Core\I18n\_m;
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use App\Core\Log;
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use App\Entity\Actor;
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use Component\FreeNetwork\Util\Discovery;
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use DateTimeInterface;
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use Exception;
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use Plugin\ActivityPub\Util\DiscoveryHints;
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use Plugin\ActivityPub\Util\Explorer;
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/**
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* Table Definition for activitypub_actor
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*
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* @author Diogo Peralta Cordeiro <mail@diogo.site
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* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class ActivitypubActor extends Entity
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{
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// {{{ Autocode
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// @codeCoverageIgnoreStart
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private string $uri;
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private int $actor_id;
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private string $inbox_uri;
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private ?string $inbox_shared_uri = null;
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private string $url;
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private DateTimeInterface $created;
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private DateTimeInterface $modified;
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public function getUri(): string
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{
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return $this->uri;
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}
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public function setUri(string $uri): self
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{
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$this->uri = $uri;
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return $this;
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}
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public function getUrl(): string
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{
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return $this->url;
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}
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public function setUrl(string $url): self
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{
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$this->url = $url;
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return $this;
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}
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public function getActorId(): int
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{
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return $this->actor_id;
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}
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public function setActorId(int $actor_id): self
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{
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$this->actor_id = $actor_id;
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return $this;
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}
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public function getInboxUri(): string
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{
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return $this->inbox_uri;
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}
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public function setInboxUri(string $inbox_uri): self
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{
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$this->inbox_uri = $inbox_uri;
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return $this;
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}
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public function getInboxSharedUri(): ?string
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{
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return $this->inbox_shared_uri;
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}
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public function setInboxSharedUri(?string $inbox_shared_uri = null): self
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{
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$this->inbox_shared_uri = $inbox_shared_uri;
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return $this;
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}
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public function getCreated(): DateTimeInterface
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{
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return $this->created;
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}
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public function setCreated(DateTimeInterface $created): self
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{
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$this->created = $created;
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return $this;
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}
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public function getModified(): DateTimeInterface
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{
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return $this->modified;
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}
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public function setModified(DateTimeInterface $modified): self
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{
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$this->modified = $modified;
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return $this;
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}
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// @codeCoverageIgnoreEnd
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// }}} Autocode
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/**
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* Look up, and if necessary create, an Activitypub_profile for the remote
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* entity with the given WebFinger address.
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* This should never return null -- you will either get an object or
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* an exception will be thrown.
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*
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* @param string $addr WebFinger address
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*
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* @throws Exception on error conditions
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*/
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public static function getByAddr(string $addr): self
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{
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// Normalize $addr, i.e. add 'acct:' if missing
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$addr = Discovery::normalize($addr);
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// Try the cache
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$uri = Cache::get(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), fn () => false);
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if ($uri !== false) {
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if (\is_null($uri)) {
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// TRANS: Exception.
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throw new Exception(_m('Not a valid WebFinger address (via cache).'));
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}
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try {
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return self::fromUri($uri);
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} catch (Exception $e) {
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Log::error(sprintf(__METHOD__ . ': WebFinger address cache inconsistent with database, did not find Activitypub_profile uri==%s', $uri));
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Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), false);
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}
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}
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// Now, try some discovery
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$disco = new Discovery();
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try {
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$xrd = $disco->lookup($addr);
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} catch (Exception $e) {
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// Save negative cache entry so we don't waste time looking it up again.
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// @todo FIXME: Distinguish temporary failures?
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Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), null);
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// TRANS: Exception.
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throw new Exception(_m('Not a valid WebFinger address: ' . $e->getMessage()));
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}
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return self::fromXrd($addr, $xrd);
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}
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public static function fromXrd(string $addr, \XML_XRD $xrd): self
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{
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$hints = array_merge(
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['webfinger' => $addr],
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DiscoveryHints::fromXRD($xrd),
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);
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if (\array_key_exists('activitypub', $hints)) {
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$uri = $hints['activitypub'];
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try {
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LOG::info("Discovery on acct:{$addr} with URI:{$uri}");
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$aprofile = self::fromUri($hints['activitypub']);
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Cache::set(sprintf('ActivitypubActor-webfinger-%s', urlencode($addr)), $aprofile->getUri());
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return $aprofile;
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} catch (Exception $e) {
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Log::warning("Failed creating profile from URI:'{$uri}', error:" . $e->getMessage());
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throw $e;
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// keep looking
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//
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// @todo FIXME: This means an error discovering from profile page
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// may give us a corrupt entry using the webfinger URI, which
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// will obscure the correct page-keyed profile later on.
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}
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}
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// XXX: try hcard
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// XXX: try FOAF
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// TRANS: Exception. %s is a WebFinger address.
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throw new Exception(sprintf(_m('Could not find a valid profile for "%s".'), $addr));
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}
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/**
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* Ensures a valid Activitypub_profile when provided with a valid URI.
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*
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* @param bool $grab_online whether to try online grabbing, defaults to true
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*
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* @throws Exception if it isn't possible to return an Activitypub_profile
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*/
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public static function fromUri(string $url, bool $grab_online = true): self
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{
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try {
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return Explorer::get_profile_from_url($url, $grab_online);
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} catch (Exception $e) {
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throw new Exception('No valid ActivityPub profile found for given URI.', previous: $e);
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}
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}
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public static function schemaDef(): array
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{
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return [
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'name' => 'activitypub_actor',
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'fields' => [
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'uri' => ['type' => 'text', 'not null' => true],
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'actor_id' => ['type' => 'int', 'not null' => true],
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'inbox_uri' => ['type' => 'text', 'not null' => true],
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'inbox_shared_uri' => ['type' => 'text'],
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'url' => ['type' => 'text'],
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'created' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was created'],
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'modified' => ['type' => 'timestamp', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
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],
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'primary key' => ['actor_id'],
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'foreign keys' => [
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'activitypub_actor_actor_id_fkey' => ['actor', ['actor_id' => 'id']],
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],
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];
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}
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}
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