src/Protocol/ActivityPub/Delivery.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Protocol\ActivityPub;
  23
  24 use Friendica\Core\Logger;
  25 use Friendica\Database\DBA;
  26 use Friendica\DI;
  27 use Friendica\Model\Contact;
  28 use Friendica\Model\GServer;
  29 use Friendica\Model\Post;
  30 use Friendica\Protocol\ActivityPub;
  31 use Friendica\Util\HTTPSignature;
  32 use Friendica\Worker\Delivery as WorkerDelivery;
  33
  34 class Delivery
  35 {
  36         /**
  37          * Deliver posts to the given inbox
  38          *
  39          * @param string $inbox
  40          * @return array with the elements "success" and "uri_ids" of the failed posts
  41          */
  42         public static function deliver(string $inbox): array
  43         {
  44                 $uri_ids    = [];
  45                 $posts      = Post\Delivery::selectForInbox($inbox);
  46                 $serverfail = false;
  47
  48                 foreach ($posts as $post) {
  49                         if (!$serverfail) {
  50                                 $result = self::deliverToInbox($post['command'], 0, $inbox, $post['uid'], $post['receivers'], $post['uri-id']);
  51
  52                                 if ($result['serverfailure']) {
  53                                         // In a timeout situation we assume that every delivery to that inbox will time out.
  54                                         // So we set the flag and try all deliveries at a later time.
  55                                         Logger::notice('Inbox delivery has a server failure', ['inbox' => $inbox]);
  56                                         $serverfail = true;
  57                                 }
  58                         }
  59
  60                         if ($serverfail || (!$result['success'] && !$result['drop'])) {
  61                                 $uri_ids[] = $post['uri-id'];
  62                         }
  63                 }
  64
  65                 Logger::debug('Inbox delivery done', ['inbox' => $inbox, 'posts' => count($posts), 'failed' => count($uri_ids), 'serverfailure' => $serverfail]);
  66                 return ['success' => empty($uri_ids), 'uri_ids' => $uri_ids];
  67         }
  68
  69         /**
  70          * Deliver the given post to the given inbox
  71          *
  72          * @param string $cmd
  73          * @param integer $item_id
  74          * @param string $inbox
  75          * @param integer $uid
  76          * @param array $receivers
  77          * @param integer $uri_id
  78          * @return array
  79          */
  80         public static function deliverToInbox(string $cmd, int $item_id, string $inbox, int $uid, array $receivers, int $uri_id): array
  81         {
  82                 if (empty($item_id) && !empty($uri_id) && !empty($uid)) {
  83                         $item = Post::selectFirst(['id', 'parent', 'origin'], ['uri-id' => $uri_id, 'uid' => [$uid, 0]], ['order' => ['uid' => true]]);
  84                         if (empty($item['id'])) {
  85                                 Logger::warning('Item not found, removing delivery', ['uri-id' => $uri_id, 'uid' => $uid, 'cmd' => $cmd, 'inbox' => $inbox]);
  86                                 Post\Delivery::remove($uri_id, $inbox);
  87                                 return ['success' => true, 'serverfailure' => false, 'drop' => false];
  88                         } else {
  89                                 $item_id = $item['id'];
  90                         }
  91                 }
  92
  93                 $success    = true;
  94                 $serverfail = false;
  95                 $drop       = false;
  96
  97                 if ($cmd == WorkerDelivery::MAIL) {
  98                         $data = ActivityPub\Transmitter::createActivityFromMail($item_id);
  99                         if (!empty($data)) {
 100                                 $success = HTTPSignature::transmit($data, $inbox, $uid);
 101                         }
 102                 } elseif ($cmd == WorkerDelivery::SUGGESTION) {
 103                         $success = ActivityPub\Transmitter::sendContactSuggestion($uid, $inbox, $item_id);
 104                 } elseif ($cmd == WorkerDelivery::RELOCATION) {
 105                         // @todo Implementation pending
 106                 } elseif ($cmd == WorkerDelivery::REMOVAL) {
 107                         $success = ActivityPub\Transmitter::sendProfileDeletion($uid, $inbox);
 108                 } elseif ($cmd == WorkerDelivery::PROFILEUPDATE) {
 109                         $success = ActivityPub\Transmitter::sendProfileUpdate($uid, $inbox);
 110                 } else {
 111                         $data = ActivityPub\Transmitter::createCachedActivityFromItem($item_id);
 112                         if (!empty($data)) {
 113                                 $timestamp  = microtime(true);
 114                                 $response   = HTTPSignature::post($data, $inbox, $uid);
 115                                 $runtime    = microtime(true) - $timestamp;
 116                                 $success    = $response->isSuccess();
 117                                 $serverfail = $response->isTimeout();
 118                                 if (!$success) {
 119                                         // 5xx errors are problems on the server. We don't need to continue delivery then.
 120                                         if (!$serverfail && ($response->getReturnCode() >= 500) && ($response->getReturnCode() <= 599)) {
 121                                                 $serverfail = true;
 122                                         }
 123
 124                                         // A 404 means that the inbox doesn't exist. We can stop the delivery here.
 125                                         if (!$serverfail && ($response->getReturnCode() == 404)) {
 126                                                 $serverfail = true;
 127                                         }
 128
 129                                         $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
 130                                         if (!$serverfail && $xrd_timeout && ($runtime > $xrd_timeout)) {
 131                                                 $serverfail = true;
 132                                         }
 133
 134                                         $curl_timeout = DI::config()->get('system', 'curl_timeout');
 135                                         if (!$serverfail && $curl_timeout && ($runtime > $curl_timeout)) {
 136                                                 $serverfail = true;
 137                                         }
 138
 139                                         // Resubscribe to relay server upon client error
 140                                         if (!$serverfail && ($response->getReturnCode() >= 400) && ($response->getReturnCode() <= 499)) {
 141                                                 $actor = self:: fetchActorForRelayInbox($inbox);
 142                                                 if (!empty($actor)) {
 143                                                         $drop = !ActivityPub\Transmitter::sendRelayFollow($actor);
 144                                                         Logger::notice('Resubscribed to relay', ['url' => $actor, 'success' => !$drop]);
 145                                                 } elseif ($cmd = WorkerDelivery::DELETION) {
 146                                                         // Remote systems not always accept our deletion requests, so we drop them if rejected.
 147                                                         // Situation is: In Friendica we allow the thread owner to delete foreign comments to their thread.
 148                                                         // Most AP systems don't allow this, so they will reject the deletion request.
 149                                                         $drop = true;
 150                                                 }
 151
 152                                         }
 153
 154                                         Logger::notice('Delivery failed', ['retcode' => $response->getReturnCode(), 'serverfailure' => $serverfail, 'drop' => $drop, 'runtime' => round($runtime, 3), 'uri-id' => $uri_id, 'uid' => $uid, 'item_id' => $item_id, 'cmd' => $cmd, 'inbox' => $inbox]);
 155                                 }
 156                                 if ($uri_id) {
 157                                         if ($success) {
 158                                                 Post\Delivery::remove($uri_id, $inbox);
 159                                         } else {
 160                                                 Post\Delivery::incrementFailed($uri_id, $inbox);
 161                                         }
 162                                 }
 163                         }
 164                 }
 165
 166                 self::setSuccess($receivers, $success);
 167
 168                 Logger::debug('Delivered', ['uri-id' => $uri_id, 'uid' => $uid, 'item_id' => $item_id, 'cmd' => $cmd, 'inbox' => $inbox, 'success' => $success, 'serverfailure' => $serverfail, 'drop' => $drop]);
 169
 170                 if (($success || $drop) && in_array($cmd, [WorkerDelivery::POST])) {
 171                         Post\DeliveryData::incrementQueueDone($uri_id, Post\DeliveryData::ACTIVITYPUB);
 172                 }
 173
 174                 return ['success' => $success, 'serverfailure' => $serverfail, 'drop' => $drop];
 175         }
 176
 177         /**
 178          * Fetch the actor of the given inbox of an relay server
 179          *
 180          * @param string $inbox
 181          * @return string
 182          */
 183         private static function fetchActorForRelayInbox(string $inbox): string
 184         {
 185                 $apcontact = DBA::selectFirst('apcontact', ['url'], ["`sharedinbox` = ? AND `type` = ? AND `url` IN (SELECT `url` FROM `contact` WHERE `uid` = ? AND `rel` = ?)",
 186                         $inbox, 'Application', 0, Contact::FRIEND]);
 187                 return $apcontact['url'] ?? '';
 188         }
 189
 190         /**
 191          * mark or unmark the given receivers for archival upon succoess
 192          *
 193          * @param array $receivers
 194          * @param boolean $success
 195          * @return void
 196          */
 197         private static function setSuccess(array $receivers, bool $success)
 198         {
 199                 $gsid = null;
 200
 201                 foreach ($receivers as $receiver) {
 202                         $contact = Contact::getById($receiver);
 203                         if (empty($contact)) {
 204                                 continue;
 205                         }
 206
 207                         $gsid = $gsid ?: $contact['gsid'];
 208
 209                         if ($success) {
 210                                 Contact::unmarkForArchival($contact);
 211                         } else {
 212                                 Contact::markForArchival($contact);
 213                         }
 214                 }
 215
 216                 if (!empty($gsid)) {
 217                         GServer::setProtocol($gsid, Post\DeliveryData::ACTIVITYPUB);
 218                 }
 219         }
 220 }