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