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