src/Worker/Delivery.php

   1 <?php
   2 /**
   3  * @file src/Worker/Delivery.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\Core\Config;
   8 use Friendica\Core\L10n;
   9 use Friendica\Core\System;
  10 use Friendica\Database\DBM;
  11 use Friendica\Model\Contact;
  12 use Friendica\Model\Item;
  13 use Friendica\Model\Queue;
  14 use Friendica\Model\User;
  15 use Friendica\Protocol\DFRN;
  16 use Friendica\Protocol\Diaspora;
  17 use Friendica\Protocol\Email;
  18 use dba;
  19
  20 require_once 'include/items.php';
  21
  22 class Delivery {
  23         public static function execute($cmd, $item_id, $contact_id) {
  24                 global $a;
  25
  26                 logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
  27
  28                 $top_level = false;
  29                 $followup = false;
  30                 $public_message = false;
  31
  32                 if ($cmd == DELIVER_MAIL) {
  33                         $target_item = dba::selectFirst('mail', [], ['id' => $item_id]);
  34                         if (!DBM::is_result($message)) {
  35                                 return;
  36                         }
  37                         $uid = $target_item['uid'];
  38                 } elseif ($cmd == DELIVER_SUGGESTION) {
  39                         $target_item = dba::selectFirst('fsuggest', [], ['id' => $item_id]);
  40                         if (!DBM::is_result($message)) {
  41                                 return;
  42                         }
  43                         $uid = $target_item['uid'];
  44                 } elseif ($cmd == DELIVER_RELOCATION) {
  45                         $uid = $item_id;
  46                 } else {
  47                         $item = dba::selectFirst('item', ['parent'], ['id' => $item_id]);
  48                         if (!DBM::is_result($item) || empty($item['parent'])) {
  49                                 return;
  50                         }
  51                         $parent_id = intval($item['parent']);
  52
  53                         $itemdata = dba::p("SELECT `item`.*, `contact`.`uid` AS `cuid`,
  54                                                         `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
  55                                                 FROM `item`
  56                                                 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  57                                                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
  58                                                 WHERE `item`.`id` IN (?, ?) AND `visible` AND NOT `moderated`
  59                                                 ORDER BY `item`.`id`",
  60                                         $item_id, $parent_id);
  61                         $items = [];
  62                         while ($item = dba::fetch($itemdata)) {
  63                                 if ($item['id'] == $parent_id) {
  64                                         $parent = $item;
  65                                 }
  66                                 if ($item['id'] == $item_id) {
  67                                         $target_item = $item;
  68                                 }
  69                                 $items[] = $item;
  70                         }
  71                         dba::close($itemdata);
  72
  73                         $uid = $target_item['cuid'];
  74
  75                         // avoid race condition with deleting entries
  76                         if ($items[0]['deleted']) {
  77                                 foreach ($items as $item) {
  78                                         $item['deleted'] = 1;
  79                                 }
  80                         }
  81
  82                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
  83                         // The count then showed more than one entry. The additional check should help.
  84                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
  85                         if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
  86                                 logger('Top level post');
  87                                 $top_level = true;
  88                         }
  89
  90                         // This is IMPORTANT!!!!
  91
  92                         // We will only send a "notify owner to relay" or followup message if the referenced post
  93                         // originated on our system by virtue of having our hostname somewhere
  94                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
  95                         // if $parent['wall'] == 1 we will already have the parent message in our array
  96                         // and we will relay the whole lot.
  97
  98                         $localhost = $a->get_hostname();
  99                         if (strpos($localhost, ':')) {
 100                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 101                         }
 102                         /**
 103                          *
 104                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 105                          * have been known to cause runaway conditions which affected several servers, along with
 106                          * permissions issues.
 107                          *
 108                          */
 109
 110                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 111                                 logger('Followup ' . $target_item["guid"], LOGGER_DEBUG);
 112                                 // local followup to remote post
 113                                 $followup = true;
 114                         }
 115
 116                         if (empty($parent['allow_cid'])
 117                                 && empty($parent['allow_gid'])
 118                                 && empty($parent['deny_cid'])
 119                                 && empty($parent['deny_gid'])
 120                                 && !$parent["private"]) {
 121                                 $public_message = true;
 122                         }
 123                 }
 124
 125                 $owner = User::getOwnerDataById($uid);
 126                 if (!DBM::is_result($owner)) {
 127                         return;
 128                 }
 129
 130                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 131                 $contact = dba::selectFirst('contact', [],
 132                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 133                 );
 134                 if (!DBM::is_result($contact)) {
 135                         return;
 136                 }
 137
 138                 // Transmit via Diaspora if the thread had started as Diaspora post
 139                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 140                 if (isset($parent) && ($parent['network'] == NETWORK_DIASPORA) && ($contact['network'] == NETWORK_DFRN)) {
 141                         $contact['network'] = NETWORK_DIASPORA;
 142                 }
 143
 144                 logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
 145
 146                 switch ($contact['network']) {
 147
 148                         case NETWORK_DFRN:
 149                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 150                                 break;
 151
 152                         case NETWORK_DIASPORA:
 153                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 154                                 break;
 155
 156                         case NETWORK_OSTATUS:
 157                                 // Do not send to otatus if we are not configured to send to public networks
 158                                 if ($owner['prvnets']) {
 159                                         break;
 160                                 }
 161                                 if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
 162                                         break;
 163                                 }
 164
 165                                 // There is currently no code here to distribute anything to OStatus.
 166                                 // This is done in "notifier.php" (See "url_recipients" and "push_notify")
 167                                 break;
 168
 169                         case NETWORK_MAIL:
 170                                 self::deliverMail($cmd, $contact, $owner, $target_item);
 171                                 break;
 172
 173                         default:
 174                                 break;
 175                 }
 176
 177                 return;
 178         }
 179
 180         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 181         {
 182                 logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . $contact['addr']);
 183
 184                 if ($cmd == DELIVER_MAIL) {
 185                         $item = $target_item;
 186                         $item['body'] = Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 187                         $atom = DFRN::mail($item, $owner);
 188                 } elseif ($cmd == DELIVER_SUGGESTION) {
 189                         $item = $target_item;
 190                         $atom = DFRN::fsuggest($item, $owner);
 191                         dba::delete('fsuggest', ['id' => $item['id']]);
 192                 } elseif ($cmd == DELIVER_RELOCATION) {
 193                         $atom = DFRN::relocate($owner, $owner['uid']);
 194                 } elseif ($followup) {
 195                         $msgitems = [$target_item];
 196                         $atom = DFRN::entries($msgitems, $owner);
 197                 } else {
 198                         $msgitems = [];
 199                         foreach ($items as $item) {
 200                                 // Only add the parent when we don't delete other items.
 201                                 if (($target_item['id'] == $item['id']) || ($cmd != DELIVER_DELETION)) {
 202                                         $item["entry:comment-allow"] = true;
 203                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 204                                         $msgitems[] = $item;
 205                                 }
 206                         }
 207                         $atom = DFRN::entries($msgitems,$owner);
 208                 }
 209
 210                 logger('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
 211
 212                 $basepath =  implode('/', array_slice(explode('/',$contact['url']),0,3));
 213
 214                 // perform local delivery if we are on the same site
 215
 216                 if (link_compare($basepath, System::baseUrl())) {
 217                         $condition = ['nurl' => normalise_link($contact['url']), 'self' => true];
 218                         $target_self = dba::selectFirst('contact', ['uid'], $condition);
 219                         if (!DBM::is_result($target_self)) {
 220                                 return;
 221                         }
 222                         $target_uid = $target_self['uid'];
 223
 224                         // Check if the user has got this contact
 225                         $cid = Contact::getIdForURL($owner['url'], $target_uid);
 226                         if (!$cid) {
 227                                 // Otherwise there should be a public contact
 228                                 $cid = Contact::getIdForURL($owner['url']);
 229                                 if (!$cid) {
 230                                         return;
 231                                 }
 232                         }
 233
 234                         // We now have some contact, so we fetch it
 235                         $target_importer = dba::fetch_first("SELECT *, `name` as `senderName`
 236                                                         FROM `contact`
 237                                                         WHERE NOT `blocked` AND `id` = ? LIMIT 1",
 238                                                         $cid);
 239
 240                         // This should never fail
 241                         if (!DBM::is_result($target_importer)) {
 242                                 return;
 243                         }
 244
 245                         // Set the user id. This is important if this is a public contact
 246                         $target_importer['importer_uid']  = $target_uid;
 247                         DFRN::import($atom, $target_importer);
 248                         return;
 249                 }
 250
 251                 if ($items[0]['uid'] == 0) {
 252                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 253                         if ($deliver_status < 200) {
 254                                 // Transmit via Diaspora if not possible via Friendica
 255                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 256                                 return;
 257                         }
 258                 } else {
 259                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 260                 }
 261
 262                 logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 263
 264                 if ($deliver_status < 0) {
 265                         logger('Delivery failed: queuing message ' . $target_item["guid"] );
 266                         Queue::add($contact['id'], NETWORK_DFRN, $atom, false, $target_item['guid']);
 267                 }
 268
 269                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 270                         // We successfully delivered a message, the contact is alive
 271                         Contact::unmarkForArchival($contact);
 272                 } else {
 273                         // The message could not be delivered. We mark the contact as "dead"
 274                         Contact::markForArchival($contact);
 275                 }
 276         }
 277
 278         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 279         {
 280                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 281                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != ACCOUNT_TYPE_COMMUNITY);
 282
 283                 if ($public_message) {
 284                         $loc = 'public batch ' . $contact['batch'];
 285                 } else {
 286                         $loc = $contact['addr'];
 287                 }
 288
 289                 logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
 290
 291                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 292                         return;
 293                 }
 294                 if ($cmd == DELIVER_MAIL) {
 295                         Diaspora::sendMail($target_item, $owner, $contact);
 296                         return;
 297                 }
 298
 299                 if ($cmd == DELIVER_SUGGESTION) {
 300                         return;
 301                 }
 302                 if (!$contact['pubkey'] && !$public_message) {
 303                         return;
 304                 }
 305                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 306                         // top-level retraction
 307                         logger('diaspora retract: ' . $loc);
 308                         Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 309                         return;
 310                 } elseif ($cmd == DELIVER_RELOCATION) {
 311                         Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 312                         return;
 313                 } elseif ($followup) {
 314                         // send comments and likes to owner to relay
 315                         logger('diaspora followup: ' . $loc);
 316                         Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 317                         return;
 318                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 319                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 320                         logger('diaspora relay: ' . $loc);
 321                         Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 322                         return;
 323                 } elseif ($top_level && !$walltowall) {
 324                         // currently no workable solution for sending walltowall
 325                         logger('diaspora status: ' . $loc);
 326                         Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 327                         return;
 328                 }
 329
 330                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 331         }
 332
 333         private static function deliverMail($cmd, $contact, $owner, $target_item)
 334         {
 335                 global $a;
 336
 337                 if (Config::get('system','dfrn_only')) {
 338                         return;
 339                 }
 340                 // WARNING: does not currently convert to RFC2047 header encodings, etc.
 341
 342                 $addr = $contact['addr'];
 343                 if (!strlen($addr)) {
 344                         return;
 345                 }
 346
 347                 if (!in_array($cmd, [DELIVER_POST, DELIVER_COMMENT])) {
 348                         return;
 349                 }
 350
 351                 $local_user = dba::selectFirst('user', [], ['uid' => $owner['uid']]);
 352                 if (!DBM::is_result($local_user)) {
 353                         return;
 354                 }
 355
 356                 logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['addr']);
 357
 358                 $reply_to = '';
 359                 $mailacct = dba::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 360                 if (DBM::is_result($mailacct) && !empty($mailacct['reply_to'])) {
 361                         $reply_to = $mailacct['reply_to'];
 362                 }
 363
 364                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 365
 366                 // only expose our real email address to true friends
 367
 368                 if (($contact['rel'] == CONTACT_IS_FRIEND) && !$contact['blocked']) {
 369                         if ($reply_to) {
 370                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to.'>' . "\n";
 371                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 372                         } else {
 373                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8').' <' . $local_user['email'] . '>' . "\n";
 374                         }
 375                 } else {
 376                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . $a->get_hostname() . '>' . "\n";
 377                 }
 378
 379                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 380
 381                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 382                         $headers .= "References: <" . Email::iri2msgid($target_item["parent-uri"]) . ">";
 383
 384                         // If Threading is enabled, write down the correct parent
 385                         if (($target_item["thr-parent"] != "") && ($target_item["thr-parent"] != $target_item["parent-uri"])) {
 386                                 $headers .= " <".Email::iri2msgid($target_item["thr-parent"]).">";
 387                         }
 388                         $headers .= "\n";
 389
 390                         if (empty($target_item['title'])) {
 391                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 392                                 $title = dba::selectFirst('item', ['title'], $condition);
 393                                 if (DBM::is_result($title) && ($title['title'] != '')) {
 394                                         $subject = $title['title'];
 395                                 } else {
 396                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 397                                         $title = dba::selectFirst('item', ['title'], $condition);
 398                                         if (DBM::is_result($title) && ($title['title'] != '')) {
 399                                                 $subject = $title['title'];
 400                                         }
 401                                 }
 402                         }
 403                         if (strncasecmp($subject,  'RE:', 3)) {
 404                                 $subject = 'Re: ' . $subject;
 405                         }
 406                 }
 407                 Email::send($addr, $subject, $headers, $target_item);
 408         }
 409 }