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