Use webfinger in apcontact fetch

[friendica.git] / src / Protocol / ActivityPub.php

diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index fa63c44d574bcb9b8f2f6af54707f3cd721f6229..5306c27d3c6fb65b7c6737edbf0590e540046e47 100644 (file)
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -1,17 +1,36 @@
 <?php
 /**
- * @file src/Protocol/ActivityPub.php
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
  */
+
 namespace Friendica\Protocol;
 
 use Friendica\Util\JsonLD;
 use Friendica\Util\Network;
 use Friendica\Core\Protocol;
 use Friendica\Model\APContact;
+use Friendica\Model\User;
 use Friendica\Util\HTTPSignature;
 
 /**
- * @brief ActivityPub Protocol class
+ * ActivityPub Protocol class
+ *
  * The ActivityPub Protocol is a message exchange protocol defined by the W3C.
  * https://www.w3.org/TR/activitypub/
  * https://www.w3.org/TR/activitystreams-core/
@@ -56,8 +75,8 @@ class ActivityPub
         */
        public static function isRequest()
        {
-               return stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/activity+json') ||
-                       stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json');
+               return stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/activity+json') ||
+                       stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/ld+json');
        }
 
        /**
@@ -74,7 +93,7 @@ class ActivityPub
                        return HTTPSignature::fetch($url, $uid);
                }
 
-               $curlResult = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json, application/ld+json']);
+               $curlResult = Network::curl($url, false, ['accept_content' => 'application/activity+json, application/ld+json']);
                if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
                        return false;
                }
@@ -88,6 +107,31 @@ class ActivityPub
                return $content;
        }
 
+       private static function getAccountType($apcontact)
+       {
+               $accounttype = -1;
+
+               switch($apcontact['type']) {
+                       case 'Person':
+                               $accounttype = User::ACCOUNT_TYPE_PERSON;
+                               break;
+                       case 'Organization':
+                               $accounttype = User::ACCOUNT_TYPE_ORGANISATION;
+                               break;
+                       case 'Service':
+                               $accounttype = User::ACCOUNT_TYPE_NEWS;
+                               break;
+                       case 'Group':
+                               $accounttype = User::ACCOUNT_TYPE_COMMUNITY;
+                               break;
+                       case 'Application':
+                               $accounttype = User::ACCOUNT_TYPE_RELAY;
+                               break;
+               }
+
+               return $accounttype;
+       }
+
        /**
         * Fetches a profile from the given url into an array that is compatible to Probe::uri
         *
@@ -111,8 +155,14 @@ class ActivityPub
                $profile['url'] = $apcontact['url'];
                $profile['addr'] = $apcontact['addr'];
                $profile['alias'] = $apcontact['alias'];
+               $profile['following'] = $apcontact['following'];
+               $profile['followers'] = $apcontact['followers'];
+               $profile['inbox'] = $apcontact['inbox'];
+               $profile['outbox'] = $apcontact['outbox'];
+               $profile['sharedinbox'] = $apcontact['sharedinbox'];
                $profile['photo'] = $apcontact['photo'];
-               // $profile['community']
+               $profile['account-type'] = self::getAccountType($apcontact);
+               $profile['community'] = ($profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY);
                // $profile['keywords']
                // $profile['location']
                $profile['about'] = $apcontact['about'];
@@ -120,7 +170,9 @@ class ActivityPub
                $profile['notify'] = $apcontact['inbox'];
                $profile['poll'] = $apcontact['outbox'];
                $profile['pubkey'] = $apcontact['pubkey'];
+               $profile['subscribe'] = $apcontact['subscribe'];
                $profile['baseurl'] = $apcontact['baseurl'];
+               $profile['gsid'] = $apcontact['gsid'];
 
                // Remove all "null" fields
                foreach ($profile as $field => $content) {
@@ -141,7 +193,7 @@ class ActivityPub
         */
        public static function fetchOutbox($url, $uid)
        {
-               $data = self::fetchContent($url);
+               $data = self::fetchContent($url, $uid);
                if (empty($data)) {
                        return;
                }
@@ -162,4 +214,49 @@ class ActivityPub
                        ActivityPub\Receiver::processActivity($ldactivity, '', $uid, true);
                }
        }
+
+       /**
+        * Fetch items from AP endpoints
+        *
+        * @param string $url  Address of the endpoint
+        * @param integer $uid Optional user id
+        * @return array Endpoint items
+        */
+       public static function fetchItems(string $url, int $uid = 0)
+       {
+               $data = self::fetchContent($url, $uid);
+               if (empty($data)) {
+                       return [];
+               }
+
+               if (!empty($data['orderedItems'])) {
+                       $items = $data['orderedItems'];
+               } elseif (!empty($data['first']['orderedItems'])) {
+                       $items = $data['first']['orderedItems'];
+               } elseif (!empty($data['first']) && is_string($data['first']) && ($data['first'] != $url)) {
+                       return self::fetchItems($data['first'], $uid);
+               } else {
+                       return [];
+               }
+
+               if (!empty($data['next']) && is_string($data['next'])) {
+                       $items = array_merge($items, self::fetchItems($data['next'], $uid));
+               }
+
+               return $items;
+       }
+
+       /**
+        * Checks if the given contact url does support ActivityPub
+        *
+        * @param string  $url    profile url
+        * @param boolean $update true = always update, false = never update, null = update when not found or outdated
+        * @return boolean
+        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
+       public static function isSupportedByContactUrl($url, $update = null)
+       {
+               return !empty(APContact::getByURL($url, $update));
+       }
 }