forked from GNUsocial/gnu-social
		
	This should fix nulls on explorer lookups inputed by postman after generate_followers/getSubscribers, that I think were caused by calling common_profile_uri that, curiously, only handles local profiles
		
			
				
	
	
		
			99 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			99 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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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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 * ActivityPub implementation for GNU social
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 *
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 * @package   GNUsocial
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 * @author    Diogo Cordeiro <diogo@fc.up.pt>
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 * @copyright 2018-2019 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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 * @link      http://www.gnu.org/software/social/
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 */
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defined('GNUSOCIAL') || die();
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/**
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 * ActivityPub error representation
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 *
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 * @category  Plugin
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 * @package   GNUsocial
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 * @author    Diogo Cordeiro <diogo@fc.up.pt>
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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 Activitypub_follow
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{
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    /**
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     * Generates an ActivityPub representation of a subscription
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     *
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     * @author Diogo Cordeiro <diogo@fc.up.pt>
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     * @param string $actor
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     * @param string $object
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     * @param string|null $id Activity id, to be used when generating for an Accept Activity
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     * @return array pretty array to be used in a response
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     */
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    public static function follow_to_array(string $actor, string $object, ?string $id = null): array
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    {
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        if ($id === null) {
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            $id = common_root_url().'follow_from_'.urlencode($actor).'_to_'.urlencode($object);
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        }
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        $res = [
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            '@context' => 'https://www.w3.org/ns/activitystreams',
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            'id'     => $id,
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            'type'   => 'Follow',
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            'actor'  => $actor,
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            'object' => $object
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       ];
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        return $res;
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    }
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    /**
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     * Handles a Follow Activity received by our inbox.
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     *
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     * @param Profile $actor_profile Remote Actor
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     * @param string $object Local Actor
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     * @param string $id Activity id
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     * @throws AlreadyFulfilledException
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     * @throws HTTP_Request2_Exception
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     * @throws NoProfileException
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     * @throws ServerException
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     * @author Diogo Cordeiro <diogo@fc.up.pt>
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     */
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    public static function follow(Profile $actor_profile, string $object, string $id)
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    {
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        // Get Actor's Aprofile
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        $actor_aprofile = Activitypub_profile::from_profile($actor_profile);
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        // Get Object profile
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        $object_profile = new Activitypub_explorer;
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        $object_profile = $object_profile->lookup($object)[0];
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        if (!Subscription::exists($actor_profile, $object_profile)) {
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            Subscription::start($actor_profile, $object_profile);
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            Activitypub_profile::subscribeCacheUpdate($actor_profile, $object_profile);
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            common_debug('ActivityPubPlugin: Accepted Follow request from '.$actor_profile->getUri().' to '.$object);
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        } else {
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            common_debug('ActivityPubPlugin: Received a repeated Follow request from '.$actor_profile->getUri().' to '.$object);
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        }
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        // Notify remote instance that we have accepted their request
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        common_debug('ActivityPubPlugin: Notifying remote instance that we have accepted their Follow request request from '.$actor_profile->getUri().' to '.$object);
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        $postman = new Activitypub_postman($object_profile, [$actor_aprofile]);
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        $postman->accept_follow($id);
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    }
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}
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