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