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