src/Worker/Delivery.php

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