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