AP: Support "discoverable"

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

diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index 7e2c591b3de2d960971f889ce546de79d4ef4b62..134f69f4a66fd9a6d45c39cfdb063e734840471f 100644 (file)
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -1,15 +1,33 @@
 <?php
 /**
- * @file src/Protocol/ActivityPub.php
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @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\Database\DBA;
+use Friendica\DI;
 use Friendica\Model\APContact;
 use Friendica\Model\User;
 use Friendica\Util\HTTPSignature;
+use Friendica\Util\JsonLD;
 
 /**
  * ActivityPub Protocol class
@@ -47,10 +65,12 @@ class ActivityPub
                'dfrn' => 'http://purl.org/macgirvin/dfrn/1.0/',
                'diaspora' => 'https://diasporafoundation.org/ns/',
                'litepub' => 'http://litepub.social/ns#',
+               'toot' => 'http://joinmastodon.org/ns#',
                'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers',
                'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag',
-               'directMessage' => 'litepub:directMessage']];
-       const ACCOUNT_TYPES = ['Person', 'Organization', 'Service', 'Group', 'Application'];
+               'directMessage' => 'litepub:directMessage',
+               'discoverable' => 'toot:discoverable']];
+       const ACCOUNT_TYPES = ['Person', 'Organization', 'Service', 'Group', 'Application', 'Tombstone'];
        /**
         * Checks if the web request is done for the AP protocol
         *
@@ -59,6 +79,7 @@ class ActivityPub
        public static function isRequest()
        {
                return stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/activity+json') ||
+                       stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/json') ||
                        stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/ld+json');
        }
 
@@ -70,24 +91,9 @@ class ActivityPub
         * @return array
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function fetchContent($url, $uid = 0)
+       public static function fetchContent(string $url, int $uid = 0)
        {
-               if (!empty($uid)) {
-                       return HTTPSignature::fetch($url, $uid);
-               }
-
-               $curlResult = Network::curl($url, false, ['accept_content' => 'application/activity+json, application/ld+json']);
-               if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
-                       return false;
-               }
-
-               $content = json_decode($curlResult->getBody(), true);
-
-               if (empty($content) || !is_array($content)) {
-                       return false;
-               }
-
-               return $content;
+               return HTTPSignature::fetch($url, $uid);
        }
 
        private static function getAccountType($apcontact)
@@ -110,6 +116,9 @@ class ActivityPub
                        case 'Application':
                                $accounttype = User::ACCOUNT_TYPE_RELAY;
                                break;
+                       case 'Tombstone':
+                               $accounttype = User::ACCOUNT_TYPE_DELETED;
+                               break;
                }
 
                return $accounttype;
@@ -128,7 +137,7 @@ class ActivityPub
        {
                $apcontact = APContact::getByURL($url, $update);
                if (empty($apcontact)) {
-                       return false;
+                       return [];
                }
 
                $profile = ['network' => Protocol::ACTIVITYPUB];
@@ -144,6 +153,7 @@ class ActivityPub
                $profile['outbox'] = $apcontact['outbox'];
                $profile['sharedinbox'] = $apcontact['sharedinbox'];
                $profile['photo'] = $apcontact['photo'];
+               $profile['header'] = $apcontact['header'];
                $profile['account-type'] = self::getAccountType($apcontact);
                $profile['community'] = ($profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY);
                // $profile['keywords']
@@ -153,7 +163,14 @@ class ActivityPub
                $profile['notify'] = $apcontact['inbox'];
                $profile['poll'] = $apcontact['outbox'];
                $profile['pubkey'] = $apcontact['pubkey'];
+               $profile['subscribe'] = $apcontact['subscribe'];
+               $profile['manually-approve'] = $apcontact['manually-approve'];
                $profile['baseurl'] = $apcontact['baseurl'];
+               $profile['gsid'] = $apcontact['gsid'];
+
+               if (!is_null($apcontact['discoverable'])) {
+                       $profile['hide'] = !$apcontact['discoverable'];
+               }
 
                // Remove all "null" fields
                foreach ($profile as $field => $content) {
@@ -174,7 +191,7 @@ class ActivityPub
         */
        public static function fetchOutbox($url, $uid)
        {
-               $data = self::fetchContent($url);
+               $data = self::fetchContent($url, $uid);
                if (empty($data)) {
                        return;
                }
@@ -196,6 +213,37 @@ class ActivityPub
                }
        }
 
+       /**
+        * 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
         *