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         public static function execute($cmd, $item_id, $contact_id) {
  25                 logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
  26
  27                 $top_level = false;
  28                 $followup = false;
  29                 $public_message = false;
  30
  31                 if ($cmd == DELIVER_MAIL) {
  32                         $target_item = dba::selectFirst('mail', [], ['id' => $item_id]);
  33                         if (!DBM::is_result($message)) {
  34                                 return;
  35                         }
  36                         $uid = $target_item['uid'];
  37                 } elseif ($cmd == DELIVER_SUGGESTION) {
  38                         $target_item = dba::selectFirst('fsuggest', [], ['id' => $item_id]);
  39                         if (!DBM::is_result($message)) {
  40                                 return;
  41                         }
  42                         $uid = $target_item['uid'];
  43                 } elseif ($cmd == DELIVER_RELOCATION) {
  44                         $uid = $item_id;
  45                 } else {
  46                         $item = dba::selectFirst('item', ['parent'], ['id' => $item_id]);
  47                         if (!DBM::is_result($item) || empty($item['parent'])) {
  48                                 return;
  49                         }
  50                         $parent_id = intval($item['parent']);
  51
  52                         $itemdata = dba::p("SELECT `item`.*, `contact`.`uid` AS `cuid`,
  53                                                         `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
  54                                                 FROM `item`
  55                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  56                                                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
  57                                                 WHERE `item`.`id` IN (?, ?) AND `visible` AND NOT `moderated`
  58                                                 ORDER BY `item`.`id`",
  59                                         $item_id, $parent_id);
  60                         $items = [];
  61                         while ($item = dba::fetch($itemdata)) {
  62                                 if ($item['id'] == $parent_id) {
  63                                         $parent = $item;
  64                                 }
  65                                 if ($item['id'] == $item_id) {
  66                                         $target_item = $item;
  67                                 }
  68                                 $items[] = $item;
  69                         }
  70                         dba::close($itemdata);
  71
  72                         $uid = $target_item['cuid'];
  73
  74                         // avoid race condition with deleting entries
  75                         if ($items[0]['deleted']) {
  76                                 foreach ($items as $item) {
  77                                         $item['deleted'] = 1;
  78                                 }
  79                         }
  80
  81                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
  82                         // The count then showed more than one entry. The additional check should help.
  83                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
  84                         if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
  85                                 logger('Top level post');
  86                                 $top_level = true;
  87                         }
  88
  89                         // This is IMPORTANT!!!!
  90
  91                         // We will only send a "notify owner to relay" or followup message if the referenced post
  92                         // originated on our system by virtue of having our hostname somewhere
  93                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
  94                         // if $parent['wall'] == 1 we will already have the parent message in our array
  95                         // and we will relay the whole lot.
  96
  97                         $localhost = self::getApp()->get_hostname();
  98                         if (strpos($localhost, ':')) {
  99                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 100                         }
 101                         /**
 102                          *
 103                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 104                          * have been known to cause runaway conditions which affected several servers, along with
 105                          * permissions issues.
 106                          *
 107                          */
 108
 109                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 110                                 logger('Followup ' . $target_item["guid"], LOGGER_DEBUG);
 111                                 // local followup to remote post
 112                                 $followup = true;
 113                         }
 114
 115                         if (empty($parent['allow_cid'])
 116                                 && empty($parent['allow_gid'])
 117                                 && empty($parent['deny_cid'])
 118                                 && empty($parent['deny_gid'])
 119                                 && !$parent["private"]) {
 120                                 $public_message = true;
 121                         }
 122                 }
 123
 124                 $owner = User::getOwnerDataById($uid);
 125                 if (!DBM::is_result($owner)) {
 126                         return;
 127                 }
 128
 129                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 130                 $contact = dba::selectFirst('contact', [],
 131                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 132                 );
 133                 if (!DBM::is_result($contact)) {
 134                         return;
 135                 }
 136
 137                 // Transmit via Diaspora if the thread had started as Diaspora post
 138                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 139                 if (isset($parent) && ($parent['network'] == NETWORK_DIASPORA) && ($contact['network'] == NETWORK_DFRN)) {
 140                         $contact['network'] = NETWORK_DIASPORA;
 141                 }
 142
 143                 logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
 144
 145                 switch ($contact['network']) {
 146
 147                         case NETWORK_DFRN:
 148                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 149                                 break;
 150
 151                         case NETWORK_DIASPORA:
 152                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 153                                 break;
 154
 155                         case NETWORK_OSTATUS:
 156                                 // Do not send to otatus if we are not configured to send to public networks
 157                                 if ($owner['prvnets']) {
 158                                         break;
 159                                 }
 160                                 if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
 161                                         break;
 162                                 }
 163
 164                                 // There is currently no code here to distribute anything to OStatus.
 165                                 // This is done in "notifier.php" (See "url_recipients" and "push_notify")
 166                                 break;
 167
 168                         case NETWORK_MAIL:
 169                                 self::deliverMail($cmd, $contact, $owner, $target_item);
 170                                 break;
 171
 172                         default:
 173                                 break;
 174                 }
 175
 176                 return;
 177         }
 178
 179         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 180         {
 181                 logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . $contact['addr']);
 182
 183                 if ($cmd == DELIVER_MAIL) {
 184                         $item = $target_item;
 185                         $item['body'] = Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 186                         $atom = DFRN::mail($item, $owner);
 187                 } elseif ($cmd == DELIVER_SUGGESTION) {
 188                         $item = $target_item;
 189                         $atom = DFRN::fsuggest($item, $owner);
 190                         dba::delete('fsuggest', ['id' => $item['id']]);
 191                 } elseif ($cmd == DELIVER_RELOCATION) {
 192                         $atom = DFRN::relocate($owner, $owner['uid']);
 193                 } elseif ($followup) {
 194                         $msgitems = [$target_item];
 195                         $atom = DFRN::entries($msgitems, $owner);
 196                 } else {
 197                         $msgitems = [];
 198                         foreach ($items as $item) {
 199                                 // Only add the parent when we don't delete other items.
 200                                 if (($target_item['id'] == $item['id']) || ($cmd != DELIVER_DELETION)) {
 201                                         $item["entry:comment-allow"] = true;
 202                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 203                                         $msgitems[] = $item;
 204                                 }
 205                         }
 206                         $atom = DFRN::entries($msgitems, $owner);
 207                 }
 208
 209                 logger('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
 210
 211                 $basepath =  implode('/', array_slice(explode('/', $contact['url']), 0, 3));
 212
 213                 // perform local delivery if we are on the same site
 214
 215                 if (link_compare($basepath, System::baseUrl())) {
 216                         $condition = ['nurl' => normalise_link($contact['url']), 'self' => true];
 217                         $target_self = dba::selectFirst('contact', ['uid'], $condition);
 218                         if (!DBM::is_result($target_self)) {
 219                                 return;
 220                         }
 221                         $target_uid = $target_self['uid'];
 222
 223                         // Check if the user has got this contact
 224                         $cid = Contact::getIdForURL($owner['url'], $target_uid);
 225                         if (!$cid) {
 226                                 // Otherwise there should be a public contact
 227                                 $cid = Contact::getIdForURL($owner['url']);
 228                                 if (!$cid) {
 229                                         return;
 230                                 }
 231                         }
 232
 233                         // We now have some contact, so we fetch it
 234                         $target_importer = dba::fetch_first("SELECT *, `name` as `senderName`
 235                                                         FROM `contact`
 236                                                         WHERE NOT `blocked` AND `id` = ? LIMIT 1",
 237                                                         $cid);
 238
 239                         // This should never fail
 240                         if (!DBM::is_result($target_importer)) {
 241                                 return;
 242                         }
 243
 244                         // Set the user id. This is important if this is a public contact
 245                         $target_importer['importer_uid']  = $target_uid;
 246                         DFRN::import($atom, $target_importer);
 247                         return;
 248                 }
 249
 250                 // We don't have a relationship with contacts on a public post.
 251                 // Se we transmit with the new method and via Diaspora as a fallback
 252                 if ($items[0]['uid'] == 0) {
 253                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 254                         if ($deliver_status < 200) {
 255                                 // Transmit via Diaspora if not possible via Friendica
 256                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 257                                 return;
 258                         }
 259                 } else {
 260                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 261                 }
 262
 263                 logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 264
 265                 if ($deliver_status < 0) {
 266                         logger('Delivery failed: queuing message ' . $target_item["guid"] );
 267                         Queue::add($contact['id'], NETWORK_DFRN, $atom, false, $target_item['guid']);
 268                 }
 269
 270                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 271                         // We successfully delivered a message, the contact is alive
 272                         Contact::unmarkForArchival($contact);
 273                 } else {
 274                         // The message could not be delivered. We mark the contact as "dead"
 275                         Contact::markForArchival($contact);
 276                 }
 277         }
 278
 279         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 280         {
 281                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 282                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != ACCOUNT_TYPE_COMMUNITY);
 283
 284                 if ($public_message) {
 285                         $loc = 'public batch ' . $contact['batch'];
 286                 } else {
 287                         $loc = $contact['addr'];
 288                 }
 289
 290                 logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
 291
 292                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 293                         return;
 294                 }
 295                 if ($cmd == DELIVER_MAIL) {
 296                         Diaspora::sendMail($target_item, $owner, $contact);
 297                         return;
 298                 }
 299
 300                 if ($cmd == DELIVER_SUGGESTION) {
 301                         return;
 302                 }
 303                 if (!$contact['pubkey'] && !$public_message) {
 304                         return;
 305                 }
 306                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 307                         // top-level retraction
 308                         logger('diaspora retract: ' . $loc);
 309                         Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 310                         return;
 311                 } elseif ($cmd == DELIVER_RELOCATION) {
 312                         Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 313                         return;
 314                 } elseif ($followup) {
 315                         // send comments and likes to owner to relay
 316                         logger('diaspora followup: ' . $loc);
 317                         Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 318                         return;
 319                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 320                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 321                         logger('diaspora relay: ' . $loc);
 322                         Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 323                         return;
 324                 } elseif ($top_level && !$walltowall) {
 325                         // currently no workable solution for sending walltowall
 326                         logger('diaspora status: ' . $loc);
 327                         Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 328                         return;
 329                 }
 330
 331                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 332         }
 333
 334         private static function deliverMail($cmd, $contact, $owner, $target_item)
 335         {
 336                 if (Config::get('system','dfrn_only')) {
 337                         return;
 338                 }
 339                 // WARNING: does not currently convert to RFC2047 header encodings, etc.
 340
 341                 $addr = $contact['addr'];
 342                 if (!strlen($addr)) {
 343                         return;
 344                 }
 345
 346                 if (!in_array($cmd, [DELIVER_POST, DELIVER_COMMENT])) {
 347                         return;
 348                 }
 349
 350                 $local_user = dba::selectFirst('user', [], ['uid' => $owner['uid']]);
 351                 if (!DBM::is_result($local_user)) {
 352                         return;
 353                 }
 354
 355                 logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['addr']);
 356
 357                 $reply_to = '';
 358                 $mailacct = dba::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 359                 if (DBM::is_result($mailacct) && !empty($mailacct['reply_to'])) {
 360                         $reply_to = $mailacct['reply_to'];
 361                 }
 362
 363                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 364
 365                 // only expose our real email address to true friends
 366
 367                 if (($contact['rel'] == CONTACT_IS_FRIEND) && !$contact['blocked']) {
 368                         if ($reply_to) {
 369                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to.'>' . "\n";
 370                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 371                         } else {
 372                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8').' <' . $local_user['email'] . '>' . "\n";
 373                         }
 374                 } else {
 375                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . self::getApp()->get_hostname() . '>' . "\n";
 376                 }
 377
 378                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 379
 380                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 381                         $headers .= "References: <" . Email::iri2msgid($target_item["parent-uri"]) . ">";
 382
 383                         // If Threading is enabled, write down the correct parent
 384                         if (($target_item["thr-parent"] != "") && ($target_item["thr-parent"] != $target_item["parent-uri"])) {
 385                                 $headers .= " <".Email::iri2msgid($target_item["thr-parent"]).">";
 386                         }
 387                         $headers .= "\n";
 388
 389                         if (empty($target_item['title'])) {
 390                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 391                                 $title = dba::selectFirst('item', ['title'], $condition);
 392                                 if (DBM::is_result($title) && ($title['title'] != '')) {
 393                                         $subject = $title['title'];
 394                                 } else {
 395                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 396                                         $title = dba::selectFirst('item', ['title'], $condition);
 397                                         if (DBM::is_result($title) && ($title['title'] != '')) {
 398                                                 $subject = $title['title'];
 399                                         }
 400                                 }
 401                         }
 402                         if (strncasecmp($subject, 'RE:', 3)) {
 403                                 $subject = 'Re: ' . $subject;
 404                         }
 405                 }
 406                 Email::send($addr, $subject, $headers, $target_item);
 407         }
 408 }