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gnu-social-v2-archive-activ.../actions/apsharedinbox.php

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<?php
/**
* GNU social - a federating social network
*
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* ActivityPubPlugin implementation for GNU Social
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*
* 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>
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* @copyright 2018 Free Software Foundation http://fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link https://www.gnu.org/software/social/
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*/
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if (!defined ('GNUSOCIAL')) {
exit (1);
}
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/**
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* Shared Inbox Handler
*
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* @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/
*/
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class apSharedInboxAction extends ManagedAction
{
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protected $needLogin = false;
protected $canPost = true;
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/**
* Handle the Shared Inbox request
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @return void
*/
protected function handle ()
{
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
ActivityPubReturn::error ("Only POST requests allowed.");
}
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$data = json_decode (file_get_contents ('php://input'));
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// Validate data
if (!isset ($data->type)) {
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ActivityPubReturn::error ("Type was not specified.");
}
if (!isset ($data->actor)) {
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ActivityPubReturn::error ("Actor was not specified.");
}
if (!isset ($data->object)) {
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ActivityPubReturn::error ("Object was not specified.");
}
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$discovery = new Activitypub_explorer;
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// Get valid Actor object
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try {
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$actor_profile = $discovery->lookup ($data->actor);
$actor_profile = $actor_profile[0];
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} catch (Exception $e) {
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ActivityPubReturn::error ("Invalid Actor.", 404);
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}
unset ($discovery);
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// Public To:
$public_to = array ("https://www.w3.org/ns/activitystreams#Public",
"Public",
"as:Public");
// Process request
switch ($data->type) {
case "Create":
if (!isset($data->to)) {
ActivityPubReturn::error ("To was not specified.");
}
$discovery = new Activitypub_explorer;
$to_profiles = array ();
// Generate To objects
if (is_array ($data->to)) {
// Remove duplicates from To actors set
array_unique ($data->to);
foreach ($data->to as $to_url) {
try {
$to_profiles = array_merge ($to_profiles, $discovery->lookup ($to_url));
} catch (Exception $e) {
// XXX: Invalid actor found, not sure how we handle those
}
}
} else if (empty ($data->to) || in_array ($data->to, $public_to)) {
// No need to do anything else at this point, let's just break out the if
} else {
try {
$to_profiles[]= $discovery->lookup ($data->to);
} catch (Exception $e) {
ActivityPubReturn::error ("Invalid Actor.", 404);
}
}
unset ($discovery);
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require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Create.php";
break;
case "Follow":
require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Follow.php";
break;
case "Like":
require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Like.php";
break;
case "Announce":
require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Announce.php";
break;
case "Undo":
require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Undo.php";
break;
case "Delete":
require_once __DIR__ . DIRECTORY_SEPARATOR . "inbox" . DIRECTORY_SEPARATOR . "Delete.php";
break;
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default:
ActivityPubReturn::error ("Invalid type value.");
}
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}
}