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