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gnu-social-v2-archive-activ.../ActivityPubPlugin.php

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<?php
/**
* GNU social - a federating social network
*
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* 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 Daniel Supernault <danielsupernault@gmail.com>
* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @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/
*/
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if (!defined ('GNUSOCIAL')) {
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exit (1);
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}
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/**
* @category Plugin
* @package GNUsocial
* @author Daniel Supernault <danielsupernault@gmail.com>
* @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 ActivityPubPlugin extends Plugin
{
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/**
* Route/Reroute urls
*
* @param URLMapper $m
* @return void
*/
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public function onRouterInitialized (URLMapper $m) {
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ActivityPubURLMapperOverwrite::overwrite_variable ($m, ':nickname',
['action' => 'showstream'],
['nickname' => Nickname::DISPLAY_FMT],
'apactorprofile');
$m->connect (':nickname/liked.json',
['action' => 'apActorLikedCollection'],
['nickname' => Nickname::DISPLAY_FMT]);
$m->connect (':nickname/followers.json',
['action' => 'apActorFollowers'],
['nickname' => Nickname::DISPLAY_FMT]);
$m->connect (':nickname/following.json',
['action' => 'apActorFollowing'],
['nickname' => Nickname::DISPLAY_FMT]);
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$m->connect (':nickname/inbox.json',
['action' => 'apActorInbox'],
['nickname' => Nickname::DISPLAY_FMT]);
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$m->connect ('inbox.json',
array('action' => 'apSharedInbox'));
}
/**
* Plugin version information
*
* @param array $versions
* @return boolean true
*/
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public function onPluginVersion (array &$versions) {
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$versions[] = [ 'name' => 'ActivityPub',
'version' => GNUSOCIAL_VERSION,
'author' => 'Daniel Supernault, Diogo Cordeiro',
'homepage' => 'https://www.gnu.org/software/social/',
'rawdescription' =>
// Todo: Translation
'Adds ActivityPub Support'];
return true;
}
}
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/**
* Overwrites variables in URL-mapping
*/
class ActivityPubURLMapperOverwrite extends URLMapper
{
static function overwrite_variable ($m, $path, $args, $paramPatterns, $newaction) {
$mimes = [
'application/activity+json',
'application/ld+json',
'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
];
if (in_array ($_SERVER["HTTP_ACCEPT"], $mimes) == false) {
return true;
}
$m->connect ($path, array('action' => $newaction), $paramPatterns);
$regex = self::makeRegex($path, $paramPatterns);
foreach ($m->variables as $n => $v) {
if ($v[1] == $regex) {
$m->variables[$n][0]['action'] = $newaction;
}
}
}
}
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/**
* Plugin return handler
*/
class ActivityPubReturn
{
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/**
* Return a valid answer
*
* @param array $res
* @return void
*/
static function answer ($res) {
header ('Content-Type: application/activity+json');
echo json_encode ($res, JSON_UNESCAPED_SLASHES | (isset ($_GET["pretty"]) ? JSON_PRETTY_PRINT : null));
exit;
}
/**
* Return an error
*
* @param string $m
* @param int32 $code
* @return void
*/
static function error ($m, $code = 500) {
http_response_code ($code);
header ('Content-Type: application/activity+json');
$res[] = Activitypub_error::errorMessageToObject ($m);
echo json_encode ($res, JSON_UNESCAPED_SLASHES);
exit;
}
}