2018-07-10 01:26:02 +01:00
< ? 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 /
*/
2018-07-26 22:12:13 +01:00
if ( ! defined ( 'GNUSOCIAL' )) {
exit ( 1 );
2018-07-10 01:26:02 +01:00
}
2018-07-13 00:20:18 +01:00
// Validate Object
2018-08-02 18:02:28 +01:00
if ( ! filter_var ( $data [ 'object' ], FILTER_VALIDATE_URL )) {
2018-07-31 23:28:27 +01:00
ActivityPubReturn :: error ( 'Invalid Object Actor URL.' );
2018-07-13 00:20:18 +01:00
}
2018-07-31 23:51:39 +01:00
// Ensure valid Object profile
2018-07-10 01:26:02 +01:00
try {
2018-08-02 01:42:15 +01:00
if ( ! isset ( $profile )) {
2018-07-31 23:51:39 +01:00
$object_profile = new Activitypub_explorer ;
2018-08-02 18:02:28 +01:00
$object_profile = $object_profile -> lookup ( $data [ 'object' ])[ 0 ];
2018-07-31 23:51:39 +01:00
} else {
$object_profile = $profile ;
2018-08-02 01:42:15 +01:00
unset ( $profile );
2018-07-31 23:51:39 +01:00
}
2018-07-26 22:12:13 +01:00
} catch ( Exception $e ) {
2018-07-31 23:28:27 +01:00
ActivityPubReturn :: error ( 'Invalid Object Actor URL.' , 404 );
2018-07-10 01:26:02 +01:00
}
2018-07-31 23:51:39 +01:00
// Get Actor's Aprofile
$actor_aprofile = Activitypub_profile :: from_profile ( $actor_profile );
2018-07-31 23:55:47 +01:00
if ( ! Subscription :: exists ( $actor_profile , $object_profile )) {
Subscription :: start ( $actor_profile , $object_profile );
2018-08-02 18:02:28 +01:00
common_debug ( 'ActivityPubPlugin: Accepted Follow request from ' . $data [ 'actor' ] . ' to ' . $data [ 'object' ]);
2018-07-31 23:35:15 +01:00
2018-08-01 00:03:15 +01:00
// Notify remote instance that we have accepted their request
2018-08-02 18:02:28 +01:00
common_debug ( 'ActivityPubPlugin: Notifying remote instance that we have accepted their Follow request request from ' . $data [ 'actor' ] . ' to ' . $data [ 'object' ]);
2018-08-01 17:38:39 +01:00
$postman = new Activitypub_postman ( $actor_profile , [ $actor_aprofile ]);
$postman -> follow ();
ActivityPubReturn :: answer ();
2018-07-31 23:55:47 +01:00
} else {
2018-08-02 18:02:28 +01:00
common_debug ( 'ActivityPubPlugin: Received a repeated Follow request from ' . $data [ 'actor' ] . ' to ' . $data [ 'object' ]);
2018-07-31 23:55:47 +01:00
ActivityPubReturn :: error ( 'Already following.' , 409 );
2018-08-02 01:42:15 +01:00
}