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 /// @todo This is some ugly code that needs to be split into several methods
  23
  24 class Delivery {
  25         public static function execute($cmd, $item_id, $contact_id) {
  26                 global $a;
  27
  28                 logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
  29
  30                 $top_level = false;
  31                 $followup = false;
  32                 $public_message = false;
  33
  34                 if ($cmd == DELIVER_MAIL) {
  35                         $target_item = dba::selectFirst('mail', [], ['id' => $item_id]);
  36                         if (!DBM::is_result($message)) {
  37                                 return;
  38                         }
  39                         $uid = $target_item['uid'];
  40                 } elseif ($cmd == DELIVER_SUGGESTION) {
  41                         $target_item = dba::selectFirst('fsuggest', [], ['id' => $item_id]);
  42                         if (!DBM::is_result($message)) {
  43                                 return;
  44                         }
  45                         $uid = $target_item['uid'];
  46                 } elseif ($cmd == DELIVER_RELOCATION) {
  47                         $uid = $item_id;
  48                 } else {
  49                         // find ancestors
  50                         $target_item = dba::fetch_first("SELECT `item`.*, `contact`.`uid` AS `cuid`,
  51                                                                 `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
  52                                                         FROM `item`
  53                                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  54                                                         LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
  55                                                         WHERE `item`.`id` = ? AND `visible` AND NOT `moderated`", $item_id);
  56
  57                         if (!DBM::is_result($target_item) || !intval($target_item['parent'])) {
  58                                 return;
  59                         }
  60
  61                         $parent_id = intval($target_item['parent']);
  62                         $uid = $target_item['cuid'];
  63
  64                         if ($parent_id != $item_id) {
  65                                 $parent = dba::fetch_first("SELECT `item`.*, `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
  66                                                                 FROM `item`
  67                                                                 LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
  68                                                                 WHERE `item`.`id` = ? AND `visible` AND NOT `moderated`", $parent_id);
  69                                 if (!DBM::is_result($parent)) {
  70                                         return;
  71                                 }
  72                                 $items = [$parent, $target_item];
  73                         } else {
  74                                 $parent = $target_item;
  75                                 $items = [$target_item];
  76                         }
  77
  78                         // avoid race condition with deleting entries
  79                         if ($items[0]['deleted']) {
  80                                 foreach ($items as $item) {
  81                                         $item['deleted'] = 1;
  82                                 }
  83                         }
  84
  85                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
  86                         // The count then showed more than one entry. The additional check should help.
  87                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
  88                         if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
  89                                 logger('Top level post');
  90                                 $top_level = true;
  91                         }
  92
  93                         // This is IMPORTANT!!!!
  94
  95                         // We will only send a "notify owner to relay" or followup message if the referenced post
  96                         // originated on our system by virtue of having our hostname somewhere
  97                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
  98                         // if $parent['wall'] == 1 we will already have the parent message in our array
  99                         // and we will relay the whole lot.
 100
 101                         $localhost = $a->get_hostname();
 102                         if (strpos($localhost, ':')) {
 103                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 104                         }
 105                         /**
 106                          *
 107                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 108                          * have been known to cause runaway conditions which affected several servers, along with
 109                          * permissions issues.
 110                          *
 111                          */
 112
 113                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 114                                 logger('Followup ' . $target_item["guid"], LOGGER_DEBUG);
 115                                 // local followup to remote post
 116                                 $followup = true;
 117                         }
 118
 119                         if (empty($parent['allow_cid'])
 120                                 && empty($parent['allow_gid'])
 121                                 && empty($parent['deny_cid'])
 122                                 && empty($parent['deny_gid'])
 123                                 && !$parent["private"]) {
 124                                 $public_message = true;
 125                         }
 126                 }
 127
 128                 $owner = User::getOwnerDataById($uid);
 129                 if (!DBM::is_result($owner)) {
 130                         return;
 131                 }
 132
 133                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 134                 $contact = dba::selectFirst('contact', [],
 135                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 136                 );
 137                 if (!DBM::is_result($contact)) {
 138                         return;
 139                 }
 140
 141                 // Transmit via Diaspora if the thread had started as Diaspora post
 142                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 143                 if (isset($parent) && ($parent['network'] == NETWORK_DIASPORA) && ($contact['network'] == NETWORK_DFRN)) {
 144                         $contact['network'] = NETWORK_DIASPORA;
 145                 }
 146
 147                 logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
 148
 149                 switch ($contact['network']) {
 150
 151                         case NETWORK_DFRN:
 152                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 153                                 break;
 154
 155                         case NETWORK_DIASPORA:
 156                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 157                                 break;
 158
 159                         case NETWORK_OSTATUS:
 160                                 // Do not send to otatus if we are not configured to send to public networks
 161                                 if ($owner['prvnets']) {
 162                                         break;
 163                                 }
 164                                 if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
 165                                         break;
 166                                 }
 167
 168                                 // There is currently no code here to distribute anything to OStatus.
 169                                 // This is done in "notifier.php" (See "url_recipients" and "push_notify")
 170                                 break;
 171
 172                         case NETWORK_MAIL:
 173                                 self::deliverMail($cmd, $contact, $owner, $target_item);
 174                                 break;
 175
 176                         default:
 177                                 break;
 178                 }
 179
 180                 return;
 181         }
 182
 183         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 184         {
 185                 logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . $contact['addr']);
 186
 187                 if ($cmd == DELIVER_MAIL) {
 188                         $item = $target_item;
 189                         $item['body'] = Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 190                         $atom = DFRN::mail($item, $owner);
 191                 } elseif ($cmd == DELIVER_SUGGESTION) {
 192                         $item = $target_item;
 193                         $atom = DFRN::fsuggest($item, $owner);
 194                         dba::delete('fsuggest', ['id' => $item['id']]);
 195                 } elseif ($cmd == DELIVER_RELOCATION) {
 196                         $atom = DFRN::relocate($owner, $owner['uid']);
 197                 } elseif ($followup) {
 198                         $msgitems = [$target_item];
 199                         $atom = DFRN::entries($msgitems, $owner);
 200                 } else {
 201                         $msgitems = [];
 202                         foreach ($items as $item) {
 203                                 // Only add the parent when we don't delete other items.
 204                                 if (($target_item['id'] == $item['id']) || ($cmd != DELIVER_DELETION)) {
 205                                         $item["entry:comment-allow"] = true;
 206                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 207                                         $msgitems[] = $item;
 208                                 }
 209                         }
 210                         $atom = DFRN::entries($msgitems,$owner);
 211                 }
 212
 213                 logger('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
 214
 215                 $basepath =  implode('/', array_slice(explode('/',$contact['url']),0,3));
 216
 217                 // perform local delivery if we are on the same site
 218
 219                 if (link_compare($basepath, System::baseUrl())) {
 220                         $condition = ['nurl' => normalise_link($contact['url']), 'self' => true];
 221                         $target_self = dba::selectFirst('contact', ['uid'], $condition);
 222                         if (!DBM::is_result($target_self)) {
 223                                 return;
 224                         }
 225                         $target_uid = $target_self['uid'];
 226
 227                         // Check if the user has got this contact
 228                         $cid = Contact::getIdForURL($owner['url'], $target_uid);
 229                         if (!$cid) {
 230                                 // Otherwise there should be a public contact
 231                                 $cid = Contact::getIdForURL($owner['url']);
 232                                 if (!$cid) {
 233                                         return;
 234                                 }
 235                         }
 236
 237                         // We now have some contact, so we fetch it
 238                         $target_importer = dba::fetch_first("SELECT *, `name` as `senderName`
 239                                                         FROM `contact`
 240                                                         WHERE NOT `blocked` AND `id` = ? LIMIT 1",
 241                                                         $cid);
 242
 243                         // This should never fail
 244                         if (!DBM::is_result($target_importer)) {
 245                                 return;
 246                         }
 247
 248                         // Set the user id. This is important if this is a public contact
 249                         $target_importer['importer_uid']  = $target_uid;
 250                         DFRN::import($atom, $target_importer);
 251                         return;
 252                 }
 253
 254                 if ($items[0]['uid'] == 0) {
 255                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 256                         if ($deliver_status < 200) {
 257                                 // Transmit via Diaspora if not possible via Friendica
 258                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 259                                 return;
 260                         }
 261                 } else {
 262                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 263                 }
 264
 265                 logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 266
 267                 if ($deliver_status < 0) {
 268                         logger('Delivery failed: queuing message ' . $target_item["guid"] );
 269                         Queue::add($contact['id'], NETWORK_DFRN, $atom, false, $target_item['guid']);
 270                 }
 271
 272                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 273                         // We successfully delivered a message, the contact is alive
 274                         Contact::unmarkForArchival($contact);
 275                 } else {
 276                         // The message could not be delivered. We mark the contact as "dead"
 277                         Contact::markForArchival($contact);
 278                 }
 279         }
 280
 281         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 282         {
 283                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 284                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != ACCOUNT_TYPE_COMMUNITY);
 285
 286                 if ($public_message) {
 287                         $loc = 'public batch ' . $contact['batch'];
 288                 } else {
 289                         $loc = $contact['addr'];
 290                 }
 291
 292                 logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
 293
 294                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 295                         return;
 296                 }
 297                 if ($cmd == DELIVER_MAIL) {
 298                         Diaspora::sendMail($target_item, $owner, $contact);
 299                         return;
 300                 }
 301
 302                 if ($cmd == DELIVER_SUGGESTION) {
 303                         return;
 304                 }
 305                 if (!$contact['pubkey'] && !$public_message) {
 306                         return;
 307                 }
 308                 if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 309                         // top-level retraction
 310                         logger('diaspora retract: ' . $loc);
 311                         Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 312                         return;
 313                 } elseif ($cmd == DELIVER_RELOCATION) {
 314                         Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 315                         return;
 316                 } elseif ($followup) {
 317                         // send comments and likes to owner to relay
 318                         logger('diaspora followup: ' . $loc);
 319                         Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 320                         return;
 321                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 322                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 323                         logger('diaspora relay: ' . $loc);
 324                         Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 325                         return;
 326                 } elseif ($top_level && !$walltowall) {
 327                         // currently no workable solution for sending walltowall
 328                         logger('diaspora status: ' . $loc);
 329                         Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 330                         return;
 331                 }
 332
 333                 logger('Unknown mode ' . $cmd . ' for ' . $loc);
 334         }
 335
 336         private static function deliverMail($cmd, $contact, $owner, $target_item)
 337         {
 338                 global $a;
 339
 340                 if (Config::get('system','dfrn_only')) {
 341                         return;
 342                 }
 343                 // WARNING: does not currently convert to RFC2047 header encodings, etc.
 344
 345                 $addr = $contact['addr'];
 346                 if (!strlen($addr)) {
 347                         return;
 348                 }
 349
 350                 if (!in_array($cmd, [DELIVER_POST, DELIVER_COMMENT])) {
 351                         return;
 352                 }
 353
 354                 $local_user = dba::selectFirst('user', [], ['uid' => $owner['uid']]);
 355                 if (!DBM::is_result($local_user)) {
 356                         return;
 357                 }
 358
 359                 logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['addr']);
 360
 361                 $reply_to = '';
 362                 $mailacct = dba::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 363                 if (DBM::is_result($mailacct) && !empty($mailacct['reply_to'])) {
 364                         $reply_to = $mailacct['reply_to'];
 365                 }
 366
 367                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 368
 369                 // only expose our real email address to true friends
 370
 371                 if (($contact['rel'] == CONTACT_IS_FRIEND) && !$contact['blocked']) {
 372                         if ($reply_to) {
 373                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to.'>' . "\n";
 374                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 375                         } else {
 376                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8').' <' . $local_user['email'] . '>' . "\n";
 377                         }
 378                 } else {
 379                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . $a->get_hostname() . '>' . "\n";
 380                 }
 381
 382                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 383
 384                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 385                         $headers .= "References: <" . Email::iri2msgid($target_item["parent-uri"]) . ">";
 386
 387                         // If Threading is enabled, write down the correct parent
 388                         if (($target_item["thr-parent"] != "") && ($target_item["thr-parent"] != $target_item["parent-uri"])) {
 389                                 $headers .= " <".Email::iri2msgid($target_item["thr-parent"]).">";
 390                         }
 391                         $headers .= "\n";
 392
 393                         if (empty($target_item['title'])) {
 394                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 395                                 $title = dba::selectFirst('item', ['title'], $condition);
 396                                 if (DBM::is_result($title) && ($title['title'] != '')) {
 397                                         $subject = $title['title'];
 398                                 } else {
 399                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 400                                         $title = dba::selectFirst('item', ['title'], $condition);
 401                                         if (DBM::is_result($title) && ($title['title'] != '')) {
 402                                                 $subject = $title['title'];
 403                                         }
 404                                 }
 405                         }
 406                         if (strncasecmp($subject,  'RE:', 3)) {
 407                                 $subject = 'Re: ' . $subject;
 408                         }
 409                 }
 410                 Email::send($addr, $subject, $headers, $target_item);
 411         }
 412 }