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         const MAIL =       'mail';
  25         const SUGGESTION = 'suggest';
  26         const RELOCATION = 'relocate';
  27         const DELETION =   'drop';
  28         const POST =       'wall-new';
  29         const COMMENT =    'comment-new';
  30
  31         public static function execute($cmd, $item_id, $contact_id) {
  32                 logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
  33
  34                 $top_level = false;
  35                 $followup = false;
  36                 $public_message = false;
  37
  38                 if ($cmd == self::MAIL) {
  39                         $target_item = dba::selectFirst('mail', [], ['id' => $item_id]);
  40                         if (!DBM::is_result($message)) {
  41                                 return;
  42                         }
  43                         $uid = $target_item['uid'];
  44                 } elseif ($cmd == self::SUGGESTION) {
  45                         $target_item = dba::selectFirst('fsuggest', [], ['id' => $item_id]);
  46                         if (!DBM::is_result($message)) {
  47                                 return;
  48                         }
  49                         $uid = $target_item['uid'];
  50                 } elseif ($cmd == self::RELOCATION) {
  51                         $uid = $item_id;
  52                 } else {
  53                         $item = dba::selectFirst('item', ['parent'], ['id' => $item_id]);
  54                         if (!DBM::is_result($item) || empty($item['parent'])) {
  55                                 return;
  56                         }
  57                         $parent_id = intval($item['parent']);
  58
  59                         $itemdata = dba::p("SELECT `item`.*, `contact`.`uid` AS `cuid`,
  60                                                         `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
  61                                                 FROM `item`
  62                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  63                                                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
  64                                                 WHERE `item`.`id` IN (?, ?) AND `visible` AND NOT `moderated`
  65                                                 ORDER BY `item`.`id`",
  66                                         $item_id, $parent_id);
  67                         $items = [];
  68                         while ($item = dba::fetch($itemdata)) {
  69                                 if ($item['id'] == $parent_id) {
  70                                         $parent = $item;
  71                                 }
  72                                 if ($item['id'] == $item_id) {
  73                                         $target_item = $item;
  74                                 }
  75                                 $items[] = $item;
  76                         }
  77                         dba::close($itemdata);
  78
  79                         $uid = $target_item['cuid'];
  80
  81                         // avoid race condition with deleting entries
  82                         if ($items[0]['deleted']) {
  83                                 foreach ($items as $item) {
  84                                         $item['deleted'] = 1;
  85                                 }
  86                         }
  87
  88                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
  89                         // The count then showed more than one entry. The additional check should help.
  90                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
  91                         if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
  92                                 logger('Top level post');
  93                                 $top_level = true;
  94                         }
  95
  96                         // This is IMPORTANT!!!!
  97
  98                         // We will only send a "notify owner to relay" or followup message if the referenced post
  99                         // originated on our system by virtue of having our hostname somewhere
 100                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 101                         // if $parent['wall'] == 1 we will already have the parent message in our array
 102                         // and we will relay the whole lot.
 103
 104                         $localhost = self::getApp()->get_hostname();
 105                         if (strpos($localhost, ':')) {
 106                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 107                         }
 108                         /**
 109                          *
 110                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 111                          * have been known to cause runaway conditions which affected several servers, along with
 112                          * permissions issues.
 113                          *
 114                          */
 115
 116                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 117                                 logger('Followup ' . $target_item["guid"], LOGGER_DEBUG);
 118                                 // local followup to remote post
 119                                 $followup = true;
 120                         }
 121
 122                         if (empty($parent['allow_cid'])
 123                                 && empty($parent['allow_gid'])
 124                                 && empty($parent['deny_cid'])
 125                                 && empty($parent['deny_gid'])
 126                                 && !$parent["private"]) {
 127                                 $public_message = true;
 128                         }
 129                 }
 130
 131                 $owner = User::getOwnerDataById($uid);
 132                 if (!DBM::is_result($owner)) {
 133                         return;
 134                 }
 135
 136                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 137                 $contact = dba::selectFirst('contact', [],
 138                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 139                 );
 140                 if (!DBM::is_result($contact)) {
 141                         return;
 142                 }
 143
 144                 // Transmit via Diaspora if the thread had started as Diaspora post
 145                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 146                 if (isset($parent) && ($parent['network'] == NETWORK_DIASPORA) && ($contact['network'] == NETWORK_DFRN)) {
 147                         $contact['network'] = NETWORK_DIASPORA;
 148                 }
 149
 150                 logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
 151
 152                 switch ($contact['network']) {
 153
 154                         case NETWORK_DFRN:
 155                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 156                                 break;
 157
 158                         case NETWORK_DIASPORA:
 159                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 160                                 break;
 161
 162                         case NETWORK_OSTATUS:
 163                                 // Do not send to otatus if we are not configured to send to public networks
 164                                 if ($owner['prvnets']) {
 165                                         break;
 166                                 }
 167                                 if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
 168                                         break;
 169                                 }
 170
 171                                 // There is currently no code here to distribute anything to OStatus.
 172                                 // This is done in "notifier.php" (See "url_recipients" and "push_notify")
 173                                 break;
 174
 175                         case NETWORK_MAIL:
 176                                 self::deliverMail($cmd, $contact, $owner, $target_item);
 177                                 break;
 178
 179                         default:
 180                                 break;
 181                 }
 182
 183                 return;
 184         }
 185
 186         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 187         {
 188                 logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . $contact['addr']);
 189
 190                 if ($cmd == self::MAIL) {
 191                         $item = $target_item;
 192                         $item['body'] = Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 193                         $atom = DFRN::mail($item, $owner);
 194                 } elseif ($cmd == self::SUGGESTION) {
 195                         $item = $target_item;
 196                         $atom = DFRN::fsuggest($item, $owner);
 197                         dba::delete('fsuggest', ['id' => $item['id']]);
 198                 } elseif ($cmd == self::RELOCATION) {
 199                         $atom = DFRN::relocate($owner, $owner['uid']);
 200                 } elseif ($followup) {
 201                         $msgitems = [$target_item];
 202                         $atom = DFRN::entries($msgitems, $owner);
 203                 } else {
 204                         $msgitems = [];
 205                         foreach ($items as $item) {
 206                                 // Only add the parent when we don't delete other items.
 207                                 if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 208                                         $item["entry:comment-allow"] = true;
 209                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 210                                         $msgitems[] = $item;
 211                                 }
 212                         }
 213                         $atom = DFRN::entries($msgitems, $owner);
 214                 }
 215
 216                 logger('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
 217
 218                 $basepath =  implode('/', array_slice(explode('/', $contact['url']), 0, 3));
 219
 220                 // perform local delivery if we are on the same site
 221
 222                 if (link_compare($basepath, System::baseUrl())) {
 223                         $condition = ['nurl' => normalise_link($contact['url']), 'self' => true];
 224                         $target_self = dba::selectFirst('contact', ['uid'], $condition);
 225                         if (!DBM::is_result($target_self)) {
 226                                 return;
 227                         }
 228                         $target_uid = $target_self['uid'];
 229
 230                         // Check if the user has got this contact
 231                         $cid = Contact::getIdForURL($owner['url'], $target_uid);
 232                         if (!$cid) {
 233                                 // Otherwise there should be a public contact
 234                                 $cid = Contact::getIdForURL($owner['url']);
 235                                 if (!$cid) {
 236                                         return;
 237                                 }
 238                         }
 239
 240                         // We now have some contact, so we fetch it
 241                         $target_importer = dba::fetch_first("SELECT *, `name` as `senderName`
 242                                                         FROM `contact`
 243                                                         WHERE NOT `blocked` AND `id` = ? LIMIT 1",
 244                                                         $cid);
 245
 246                         // This should never fail
 247                         if (!DBM::is_result($target_importer)) {
 248                                 return;
 249                         }
 250
 251                         // Set the user id. This is important if this is a public contact
 252                         $target_importer['importer_uid']  = $target_uid;
 253                         DFRN::import($atom, $target_importer);
 254                         return;
 255                 }
 256
 257                 // We don't have a relationship with contacts on a public post.
 258                 // Se we transmit with the new method and via Diaspora as a fallback
 259                 if ($items[0]['uid'] == 0) {
 260                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 261                         if ($deliver_status < 200) {
 262                                 // Transmit via Diaspora if not possible via Friendica
 263                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 264                                 return;
 265                         }
 266                 } else {
 267                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 268                 }
 269
 270                 logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 271
 272                 if ($deliver_status < 0) {
 273                         logger('Delivery failed: queuing message ' . $target_item["guid"] );
 274                         Queue::add($contact['id'], NETWORK_DFRN, $atom, false, $target_item['guid']);
 275                 }
 276
 277                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 278                         // We successfully delivered a message, the contact is alive
 279                         Contact::unmarkForArchival($contact);
 280                 } else {
 281                         // The message could not be delivered. We mark the contact as "dead"
 282                         Contact::markForArchival($contact);
 283                 }
 284         }
 285
 286         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 287         {
 288                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 289                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != ACCOUNT_TYPE_COMMUNITY);
 290
 291                 if ($public_message) {
 292                         $loc = 'public batch ' . $contact['batch'];
 293                 } else {
 294                         $loc = $contact['addr'];
 295                 }
 296
 297                 logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
 298
 299                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 300                         return;
 301                 }
 302                 if ($cmd == self::MAIL) {
 303                         Diaspora::sendMail($target_item, $owner, $contact);
 304                         return;
 305                 }
 306
 307                 if ($cmd == self::SUGGESTION) {
 308                         return;
 309                 }
 310                 if (!$contact['pubkey'] && !$public_message) {
 311                         return;
 312                 }
 313                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 314                         // top-level retraction
 315                         logger('diaspora retract: ' . $loc);
 316                         Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 317                         return;
 318                 } elseif ($cmd == self::RELOCATION) {
 319                         Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 320                         return;
 321                 } elseif ($followup) {
 322                         // send comments and likes to owner to relay
 323                         logger('diaspora followup: ' . $loc);
 324                         Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 325                         return;
 326                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 327                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 328                         logger('diaspora relay: ' . $loc);
 329                         Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 330                         return;
 331                 } elseif ($top_level && !$walltowall) {
 332                         // currently no workable solution for sending walltowall
 333                         logger('diaspora status: ' . $loc);
 334                         Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 335                         return;
 336                 }
 337
 338                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 339         }
 340
 341         private static function deliverMail($cmd, $contact, $owner, $target_item)
 342         {
 343                 if (Config::get('system','dfrn_only')) {
 344                         return;
 345                 }
 346                 // WARNING: does not currently convert to RFC2047 header encodings, etc.
 347
 348                 $addr = $contact['addr'];
 349                 if (!strlen($addr)) {
 350                         return;
 351                 }
 352
 353                 if (!in_array($cmd, [self::POST, self::COMMENT])) {
 354                         return;
 355                 }
 356
 357                 $local_user = dba::selectFirst('user', [], ['uid' => $owner['uid']]);
 358                 if (!DBM::is_result($local_user)) {
 359                         return;
 360                 }
 361
 362                 logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['addr']);
 363
 364                 $reply_to = '';
 365                 $mailacct = dba::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 366                 if (DBM::is_result($mailacct) && !empty($mailacct['reply_to'])) {
 367                         $reply_to = $mailacct['reply_to'];
 368                 }
 369
 370                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 371
 372                 // only expose our real email address to true friends
 373
 374                 if (($contact['rel'] == CONTACT_IS_FRIEND) && !$contact['blocked']) {
 375                         if ($reply_to) {
 376                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to.'>' . "\n";
 377                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 378                         } else {
 379                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8').' <' . $local_user['email'] . '>' . "\n";
 380                         }
 381                 } else {
 382                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . self::getApp()->get_hostname() . '>' . "\n";
 383                 }
 384
 385                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 386
 387                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 388                         $headers .= "References: <" . Email::iri2msgid($target_item["parent-uri"]) . ">";
 389
 390                         // If Threading is enabled, write down the correct parent
 391                         if (($target_item["thr-parent"] != "") && ($target_item["thr-parent"] != $target_item["parent-uri"])) {
 392                                 $headers .= " <".Email::iri2msgid($target_item["thr-parent"]).">";
 393                         }
 394                         $headers .= "\n";
 395
 396                         if (empty($target_item['title'])) {
 397                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 398                                 $title = dba::selectFirst('item', ['title'], $condition);
 399                                 if (DBM::is_result($title) && ($title['title'] != '')) {
 400                                         $subject = $title['title'];
 401                                 } else {
 402                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 403                                         $title = dba::selectFirst('item', ['title'], $condition);
 404                                         if (DBM::is_result($title) && ($title['title'] != '')) {
 405                                                 $subject = $title['title'];
 406                                         }
 407                                 }
 408                         }
 409                         if (strncasecmp($subject, 'RE:', 3)) {
 410                                 $subject = 'Re: ' . $subject;
 411                         }
 412                 }
 413                 Email::send($addr, $subject, $headers, $target_item);
 414         }
 415 }