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