src/Worker/Delivery.php

   1 <?php
   2 /**
   3  * @file src/Worker/Delivery.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\BaseObject;
   8 use Friendica\Core\Config;
   9 use Friendica\Core\L10n;
  10 use Friendica\Core\Protocol;
  11 use Friendica\Core\System;
  12 use Friendica\Database\DBA;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Item;
  15 use Friendica\Model\Queue;
  16 use Friendica\Model\User;
  17 use Friendica\Protocol\DFRN;
  18 use Friendica\Protocol\ActivityPub;
  19 use Friendica\Protocol\Diaspora;
  20 use Friendica\Protocol\Email;
  21
  22 require_once 'include/items.php';
  23
  24 class Delivery extends BaseObject
  25 {
  26         const MAIL =       'mail';
  27         const SUGGESTION = 'suggest';
  28         const RELOCATION = 'relocate';
  29         const DELETION =   'drop';
  30         const POST =       'wall-new';
  31         const COMMENT =    'comment-new';
  32         const REMOVAL =    'removeme';
  33
  34         public static function execute($cmd, $item_id, $contact_id)
  35         {
  36                 logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
  37
  38                 $top_level = false;
  39                 $followup = false;
  40                 $public_message = false;
  41
  42                 if ($cmd == self::MAIL) {
  43                         $target_item = DBA::selectFirst('mail', [], ['id' => $item_id]);
  44                         if (!DBA::isResult($target_item)) {
  45                                 return;
  46                         }
  47                         $uid = $target_item['uid'];
  48                         $items = [];
  49                 } elseif ($cmd == self::SUGGESTION) {
  50                         $target_item = DBA::selectFirst('fsuggest', [], ['id' => $item_id]);
  51                         if (!DBA::isResult($target_item)) {
  52                                 return;
  53                         }
  54                         $uid = $target_item['uid'];
  55                 } elseif ($cmd == self::RELOCATION) {
  56                         $uid = $item_id;
  57                 } else {
  58                         $item = Item::selectFirst(['parent'], ['id' => $item_id]);
  59                         if (!DBA::isResult($item) || empty($item['parent'])) {
  60                                 return;
  61                         }
  62                         $parent_id = intval($item['parent']);
  63
  64                         $condition = ['id' => [$item_id, $parent_id], 'moderated' => false];
  65                         $params = ['order' => ['id']];
  66                         $itemdata = Item::select([], $condition, $params);
  67
  68                         $items = [];
  69                         while ($item = Item::fetch($itemdata)) {
  70                                 if ($item['id'] == $parent_id) {
  71                                         $parent = $item;
  72                                 }
  73                                 if ($item['id'] == $item_id) {
  74                                         $target_item = $item;
  75                                 }
  76                                 $items[] = $item;
  77                         }
  78                         DBA::close($itemdata);
  79
  80                         if (empty($target_item)) {
  81                                 logger('Item ' . $item_id . "wasn't found. Quitting here.");
  82                                 return;
  83                         }
  84
  85                         if (empty($parent)) {
  86                                 logger('Parent ' . $parent_id . ' for item ' . $item_id . "wasn't found. Quitting here.");
  87                                 return;
  88                         }
  89
  90                         $uid = $target_item['contact-uid'];
  91
  92                         // avoid race condition with deleting entries
  93                         if ($items[0]['deleted']) {
  94                                 foreach ($items as $item) {
  95                                         $item['deleted'] = 1;
  96                                 }
  97                         }
  98
  99                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
 100                         // The count then showed more than one entry. The additional check should help.
 101                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
 102                         if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
 103                                 logger('Top level post');
 104                                 $top_level = true;
 105                         }
 106
 107                         // This is IMPORTANT!!!!
 108
 109                         // We will only send a "notify owner to relay" or followup message if the referenced post
 110                         // originated on our system by virtue of having our hostname somewhere
 111                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 112                         // if $parent['wall'] == 1 we will already have the parent message in our array
 113                         // and we will relay the whole lot.
 114
 115                         $localhost = self::getApp()->get_hostname();
 116                         if (strpos($localhost, ':')) {
 117                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 118                         }
 119                         /**
 120                          *
 121                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 122                          * have been known to cause runaway conditions which affected several servers, along with
 123                          * permissions issues.
 124                          *
 125                          */
 126
 127                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 128                                 logger('Followup ' . $target_item["guid"], LOGGER_DEBUG);
 129                                 // local followup to remote post
 130                                 $followup = true;
 131                         }
 132
 133                         if (empty($parent['allow_cid'])
 134                                 && empty($parent['allow_gid'])
 135                                 && empty($parent['deny_cid'])
 136                                 && empty($parent['deny_gid'])
 137                                 && !$parent["private"]) {
 138                                 $public_message = true;
 139                         }
 140                 }
 141
 142                 if (empty($items)) {
 143                         logger('No delivery data for  ' . $cmd . ' - Item ID: ' .$item_id . ' - Contact ID: ' . $contact_id);
 144                 }
 145
 146                 $owner = User::getOwnerDataById($uid);
 147                 if (!DBA::isResult($owner)) {
 148                         return;
 149                 }
 150
 151                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 152                 $contact = DBA::selectFirst('contact', [],
 153                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 154                 );
 155                 if (!DBA::isResult($contact)) {
 156                         return;
 157                 }
 158
 159                 // Transmit via Diaspora if the thread had started as Diaspora post
 160                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 161                 if (isset($parent) && ($parent['network'] == Protocol::DIASPORA) && ($contact['network'] == Protocol::DFRN)) {
 162                         $contact['network'] = Protocol::DIASPORA;
 163                 }
 164
 165                 logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
 166
 167                 switch ($contact['network']) {
 168
 169                         case Protocol::ACTIVITYPUB:
 170                                 self::deliverActivityPub($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 171                                 break;
 172
 173                         case Protocol::DFRN:
 174                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 175                                 break;
 176
 177                         case Protocol::DIASPORA:
 178                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 179                                 break;
 180
 181                         case Protocol::OSTATUS:
 182                                 // Do not send to otatus if we are not configured to send to public networks
 183                                 if ($owner['prvnets']) {
 184                                         break;
 185                                 }
 186                                 if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
 187                                         break;
 188                                 }
 189
 190                                 // There is currently no code here to distribute anything to OStatus.
 191                                 // This is done in "notifier.php" (See "url_recipients" and "push_notify")
 192                                 break;
 193
 194                         case Protocol::MAIL:
 195                                 self::deliverMail($cmd, $contact, $owner, $target_item);
 196                                 break;
 197
 198                         default:
 199                                 break;
 200                 }
 201
 202                 return;
 203         }
 204
 205         /**
 206          * @brief Deliver content via DFRN
 207          *
 208          * @param string  $cmd            Command
 209          * @param array   $contact        Contact record of the receiver
 210          * @param array   $owner          Owner record of the sender
 211          * @param array   $items          Item record of the content and the parent
 212          * @param array   $target_item    Item record of the content
 213          * @param boolean $public_message Is the content public?
 214          * @param boolean $top_level      Is it a thread starter?
 215          * @param boolean $followup       Is it an answer to a remote post?
 216          */
 217         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 218         {
 219                 logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . (empty($contact['addr']) ? $contact['url'] : $contact['addr']));
 220
 221                 if ($cmd == self::MAIL) {
 222                         $item = $target_item;
 223                         $item['body'] = Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 224                         $atom = DFRN::mail($item, $owner);
 225                 } elseif ($cmd == self::SUGGESTION) {
 226                         $item = $target_item;
 227                         $atom = DFRN::fsuggest($item, $owner);
 228                         DBA::delete('fsuggest', ['id' => $item['id']]);
 229                 } elseif ($cmd == self::RELOCATION) {
 230                         $atom = DFRN::relocate($owner, $owner['uid']);
 231                 } elseif ($followup) {
 232                         $msgitems = [$target_item];
 233                         $atom = DFRN::entries($msgitems, $owner);
 234                 } else {
 235                         $msgitems = [];
 236                         foreach ($items as $item) {
 237                                 // Only add the parent when we don't delete other items.
 238                                 if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 239                                         $item["entry:comment-allow"] = true;
 240                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 241                                         $msgitems[] = $item;
 242                                 }
 243                         }
 244                         $atom = DFRN::entries($msgitems, $owner);
 245                 }
 246
 247                 logger('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
 248
 249                 $basepath =  implode('/', array_slice(explode('/', $contact['url']), 0, 3));
 250
 251                 // perform local delivery if we are on the same site
 252
 253                 if (link_compare($basepath, System::baseUrl())) {
 254                         $condition = ['nurl' => normalise_link($contact['url']), 'self' => true];
 255                         $target_self = DBA::selectFirst('contact', ['uid'], $condition);
 256                         if (!DBA::isResult($target_self)) {
 257                                 return;
 258                         }
 259                         $target_uid = $target_self['uid'];
 260
 261                         // Check if the user has got this contact
 262                         $cid = Contact::getIdForURL($owner['url'], $target_uid);
 263                         if (!$cid) {
 264                                 // Otherwise there should be a public contact
 265                                 $cid = Contact::getIdForURL($owner['url']);
 266                                 if (!$cid) {
 267                                         return;
 268                                 }
 269                         }
 270
 271                         $target_importer = DFRN::getImporter($cid, $target_uid);
 272                         if (empty($target_importer)) {
 273                                 // This should never happen
 274                                 return;
 275                         }
 276
 277                         DFRN::import($atom, $target_importer);
 278                         return;
 279                 }
 280
 281                 // We don't have a relationship with contacts on a public post.
 282                 // Se we transmit with the new method and via Diaspora as a fallback
 283                 if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
 284                         // Transmit in public if it's a relay post
 285                         $public_dfrn = ($contact['contact-type'] == Contact::ACCOUNT_TYPE_RELAY);
 286
 287                         $deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
 288
 289                         // We never spool failed relay deliveries
 290                         if ($public_dfrn) {
 291                                 logger('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 292                                 return;
 293                         }
 294
 295                         if (($deliver_status < 200) || ($deliver_status > 299)) {
 296                                 // Transmit via Diaspora if not possible via Friendica
 297                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 298                                 return;
 299                         }
 300                 } else {
 301                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 302                 }
 303
 304                 logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 305
 306                 if ($deliver_status < 0) {
 307                         logger('Delivery failed: queuing message ' . $target_item["guid"] );
 308                         Queue::add($contact['id'], Protocol::DFRN, $atom, false, $target_item['guid']);
 309                 }
 310
 311                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 312                         // We successfully delivered a message, the contact is alive
 313                         Contact::unmarkForArchival($contact);
 314                 } else {
 315                         // The message could not be delivered. We mark the contact as "dead"
 316                         Contact::markForArchival($contact);
 317
 318                         // Transmit via Diaspora when all other methods (legacy DFRN and new one) are failing.
 319                         // This is a fallback for systems that don't know the new methods.
 320                         self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 321                 }
 322         }
 323
 324         /**
 325          * @brief Deliver content via Diaspora
 326          *
 327          * @param string  $cmd            Command
 328          * @param array   $contact        Contact record of the receiver
 329          * @param array   $owner          Owner record of the sender
 330          * @param array   $items          Item record of the content and the parent
 331          * @param array   $target_item    Item record of the content
 332          * @param boolean $public_message Is the content public?
 333          * @param boolean $top_level      Is it a thread starter?
 334          * @param boolean $followup       Is it an answer to a remote post?
 335          */
 336         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 337         {
 338                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 339                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Contact::ACCOUNT_TYPE_COMMUNITY);
 340
 341                 if ($public_message) {
 342                         $loc = 'public batch ' . $contact['batch'];
 343                 } else {
 344                         $loc = $contact['addr'];
 345                 }
 346
 347                 logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
 348
 349                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 350                         return;
 351                 }
 352                 if ($cmd == self::MAIL) {
 353                         Diaspora::sendMail($target_item, $owner, $contact);
 354                         return;
 355                 }
 356
 357                 if ($cmd == self::SUGGESTION) {
 358                         return;
 359                 }
 360                 if (!$contact['pubkey'] && !$public_message) {
 361                         return;
 362                 }
 363                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 364                         // top-level retraction
 365                         logger('diaspora retract: ' . $loc);
 366                         Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 367                         return;
 368                 } elseif ($cmd == self::RELOCATION) {
 369                         Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 370                         return;
 371                 } elseif ($followup) {
 372                         // send comments and likes to owner to relay
 373                         logger('diaspora followup: ' . $loc);
 374                         Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 375                         return;
 376                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 377                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 378                         logger('diaspora relay: ' . $loc);
 379                         Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 380                         return;
 381                 } elseif ($top_level && !$walltowall) {
 382                         // currently no workable solution for sending walltowall
 383                         logger('diaspora status: ' . $loc);
 384                         Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 385                         return;
 386                 }
 387
 388                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 389         }
 390
 391         /**
 392          * @brief Deliver content via ActivityPub
 393 q        *
 394          * @param string  $cmd            Command
 395          * @param array   $contact        Contact record of the receiver
 396          * @param array   $owner          Owner record of the sender
 397          * @param array   $items          Item record of the content and the parent
 398          * @param array   $target_item    Item record of the content
 399          * @param boolean $public_message Is the content public?
 400          * @param boolean $top_level      Is it a thread starter?
 401          * @param boolean $followup       Is it an answer to a remote post?
 402          */
 403         private static function deliverActivityPub($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 404         {
 405                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via ActivityPub
 406                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Contact::ACCOUNT_TYPE_COMMUNITY);
 407
 408                 if ($public_message) {
 409                         $loc = 'public batch ' . $contact['batch'];
 410                 } else {
 411                         $loc = $contact['addr'];
 412                 }
 413
 414                 logger('Deliver ' . $target_item["guid"] . ' via ActivityPub to ' . $loc);
 415
 416 //              if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 417 //                      return;
 418 //              }
 419                 if ($cmd == self::MAIL) {
 420 //                      ActivityPub::sendMail($target_item, $owner, $contact);
 421                         return;
 422                 }
 423
 424                 if ($cmd == self::SUGGESTION) {
 425                         return;
 426                 }
 427 //              if (!$contact['pubkey'] && !$public_message) {
 428 //                      logger('No public key, no delivery.');
 429 //                      return;
 430 //              }
 431                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 432                         // top-level retraction
 433                         logger('ActivityPub retract: ' . $loc);
 434 //                      ActivityPub::sendRetraction($target_item, $owner, $contact, $public_message);
 435                         return;
 436                 } elseif ($cmd == self::RELOCATION) {
 437 //                      ActivityPub::sendAccountMigration($owner, $contact, $owner['uid']);
 438                         return;
 439                 } elseif ($followup) {
 440                         // send comments and likes to owner to relay
 441                         logger('ActivityPub followup: ' . $loc);
 442                         $data = ActivityPub::createActivityFromItem($target_item['id']);
 443                         ActivityPub::transmit($data, $contact['notify'], $owner['uid']);
 444 //                      ActivityPub::sendFollowup($target_item, $owner, $contact, $public_message);
 445                         return;
 446                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 447                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 448                         logger('ActivityPub relay: ' . $loc);
 449                         $data = ActivityPub::createActivityFromItem($target_item['id']);
 450                         ActivityPub::transmit($data, $contact['notify'], $owner['uid']);
 451 //                      ActivityPub::sendRelay($target_item, $owner, $contact, $public_message);
 452                         return;
 453                 } elseif ($top_level && !$walltowall) {
 454                         // currently no workable solution for sending walltowall
 455                         logger('ActivityPub status: ' . $loc);
 456                         $data = ActivityPub::createActivityFromItem($target_item['id']);
 457                         ActivityPub::transmit($data, $contact['notify'], $owner['uid']);
 458 //                      ActivityPub::sendStatus($target_item, $owner, $contact, $public_message);
 459                         return;
 460                 }
 461
 462                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 463         }
 464
 465         /**
 466          * @brief Deliver content via mail
 467          *
 468          * @param string $cmd         Command
 469          * @param array  $contact     Contact record of the receiver
 470          * @param array  $owner       Owner record of the sender
 471          * @param array  $target_item Item record of the content
 472          */
 473         private static function deliverMail($cmd, $contact, $owner, $target_item)
 474         {
 475                 if (Config::get('system','dfrn_only')) {
 476                         return;
 477                 }
 478                 // WARNING: does not currently convert to RFC2047 header encodings, etc.
 479
 480                 $addr = $contact['addr'];
 481                 if (!strlen($addr)) {
 482                         return;
 483                 }
 484
 485                 if (!in_array($cmd, [self::POST, self::COMMENT])) {
 486                         return;
 487                 }
 488
 489                 $local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
 490                 if (!DBA::isResult($local_user)) {
 491                         return;
 492                 }
 493
 494                 logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['addr']);
 495
 496                 $reply_to = '';
 497                 $mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 498                 if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
 499                         $reply_to = $mailacct['reply_to'];
 500                 }
 501
 502                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 503
 504                 // only expose our real email address to true friends
 505
 506                 if (($contact['rel'] == Contact::FRIEND) && !$contact['blocked']) {
 507                         if ($reply_to) {
 508                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to.'>' . "\n";
 509                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 510                         } else {
 511                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8').' <' . $local_user['email'] . '>' . "\n";
 512                         }
 513                 } else {
 514                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . self::getApp()->get_hostname() . '>' . "\n";
 515                 }
 516
 517                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 518
 519                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 520                         $headers .= "References: <" . Email::iri2msgid($target_item["parent-uri"]) . ">";
 521
 522                         // If Threading is enabled, write down the correct parent
 523                         if (($target_item["thr-parent"] != "") && ($target_item["thr-parent"] != $target_item["parent-uri"])) {
 524                                 $headers .= " <".Email::iri2msgid($target_item["thr-parent"]).">";
 525                         }
 526
 527                         $headers .= "\n";
 528
 529                         if (empty($target_item['title'])) {
 530                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 531                                 $title = Item::selectFirst(['title'], $condition);
 532
 533                                 if (DBA::isResult($title) && ($title['title'] != '')) {
 534                                         $subject = $title['title'];
 535                                 } else {
 536                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 537                                         $title = Item::selectFirst(['title'], $condition);
 538
 539                                         if (DBA::isResult($title) && ($title['title'] != '')) {
 540                                                 $subject = $title['title'];
 541                                         }
 542                                 }
 543                         }
 544
 545                         if (strncasecmp($subject, 'RE:', 3)) {
 546                                 $subject = 'Re: ' . $subject;
 547                         }
 548                 }
 549
 550                 Email::send($addr, $subject, $headers, $target_item);
 551         }
 552 }