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