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gnu-social-v2-archive-activ.../utils/postman.php

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<?php
/**
* GNU social - a federating social network
*
* ActivityPubPlugin implementation for GNU Social
*
* LICENCE: This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Daniel Supernault <danielsupernault@gmail.com>
* @copyright 2018 Free Software Foundation http://fsf.org
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link https://www.gnu.org/software/social/
*/
if (!defined ('GNUSOCIAL')) {
exit (1);
}
/**
2018-07-13 12:32:27 +01:00
* ActivityPub's own Postman
*
* Standard workflow expects that we send an Explorer to find out destinataries'
* inbox address. Then we send our postman to deliver whatever we want to send them.
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://www.gnu.org/software/social/
*/
class Activitypub_postman
{
private $actor;
private $to = array ();
private $client;
private $headers;
/**
* Create a postman to deliver something to someone
*
* @param Profile of sender
* @param Activitypub_profile $to array of destinataries
*/
public function __construct ($from, $to = array ())
{
$this->client = new HTTPClient ();
$this->actor = $from;
$this->to = $to;
$this->headers = array();
$this->headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$this->headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
}
/**
* Send a follow notification to remote instance
*/
public function follow ()
{
$data = array ("@context" => "https://www.w3.org/ns/activitystreams",
"type" => "Follow",
"actor" => $this->actor->getUrl (),
"object" => $this->to[0]->getUrl ());
$this->client->setBody (json_encode ($data));
$this->client->post ($this->to[0]->get_inbox (), $this->headers);
}
/**
* Send a Undo Follow notification to remote instance
*/
public function undo_follow ()
{
$data = array ("@context" => "https://www.w3.org/ns/activitystreams",
"type" => "Undo",
"actor" => $this->actor->getUrl (),
"object" => array (
"type" => "Follow",
"object" => $this->to[0]->getUrl ()
)
);
$this->client->setBody (json_encode ($data));
$this->client->post ($this->to[0]->get_inbox (), $this->headers);
}
/**
* Send a Like notification to remote instances holding the notice
*
* @param Notice $notice
*/
public function like ($notice)
{
$data = array ("@context" => "https://www.w3.org/ns/activitystreams",
"type" => "Like",
"actor" => $this->actor->getUrl (),
"object" => $notice->getUrl ());
$this->client->setBody (json_encode ($data));
foreach ($this->to_inbox () as $inbox) {
$this->client->post ($inbox, $this->headers);
}
}
/**
* Send a Undo Like notification to remote instances holding the notice
*
* @param Notice $notice
*/
public function undo_like ($notice)
{
$data = array ("@context" => "https://www.w3.org/ns/activitystreams",
"type" => "Undo",
"actor" => $this->actor->getUrl (),
"object" => array (
"type" => "Like",
"object" => $notice->getUrl ()
)
);
$this->client->setBody (json_encode ($data));
foreach ($this->to_inbox () as $inbox) {
$this->client->post ($inbox, $this->headers);
}
}
private function to_inbox ()
{
$to_inboxes = array ();
foreach ($this->to as $to_profile) {
$to_inboxes[] = $to_profile->get_inbox ();
}
return array_unique ($to_inboxes);
}
}