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