include/dfrn.php

   1 <?php
   2 /**
   3  * @file include/dfrn.php
   4  * @brief The implementation of the dfrn protocol
   5  *
   6  * @see https://github.com/friendica/friendica/wiki/Protocol and
   7  * https://github.com/friendica/friendica/blob/master/spec/dfrn2.pdf
   8  */
   9
  10 require_once("include/Contact.php");
  11 require_once("include/ostatus.php");
  12 require_once("include/enotify.php");
  13 require_once("include/threads.php");
  14 require_once("include/socgraph.php");
  15 require_once("include/items.php");
  16 require_once("include/tags.php");
  17 require_once("include/files.php");
  18 require_once("include/event.php");
  19 require_once("include/text.php");
  20 require_once("include/oembed.php");
  21 require_once("include/html2bbcode.php");
  22 require_once("include/bbcode.php");
  23 require_once("include/xml.php");
  24
  25 /**
  26  * @brief This class contain functions to create and send DFRN XML files
  27  *
  28  */
  29 class dfrn {
  30
  31         const DFRN_TOP_LEVEL = 0;       // Top level posting
  32         const DFRN_REPLY = 1;           // Regular reply that is stored locally
  33         const DFRN_REPLY_RC = 2;        // Reply that will be relayed
  34
  35         /**
  36          * @brief Generates the atom entries for delivery.php
  37          *
  38          * This function is used whenever content is transmitted via DFRN.
  39          *
  40          * @param array $items Item elements
  41          * @param array $owner Owner record
  42          *
  43          * @return string DFRN entries
  44          * @todo Add type-hints
  45          */
  46         public static function entries($items,$owner) {
  47
  48                 $doc = new DOMDocument('1.0', 'utf-8');
  49                 $doc->formatOutput = true;
  50
  51                 $root = self::add_header($doc, $owner, "dfrn:owner", "", false);
  52
  53                 if (! count($items)) {
  54                         return trim($doc->saveXML());
  55                 }
  56
  57                 foreach ($items as $item) {
  58                         $entry = self::entry($doc, "text", $item, $owner, $item["entry:comment-allow"], $item["entry:cid"]);
  59                         $root->appendChild($entry);
  60                 }
  61
  62                 return(trim($doc->saveXML()));
  63         }
  64
  65         /**
  66          * @brief Generate an atom feed for the given user
  67          *
  68          * This function is called when another server is pulling data from the user feed.
  69          *
  70          * @param string $dfrn_id DFRN ID from the requesting party
  71          * @param string $owner_nick Owner nick name
  72          * @param string $last_update Date of the last update
  73          * @param int $direction Can be -1, 0 or 1.
  74          * @param boolean $onlyheader Output only the header without content? (Default is "no")
  75          *
  76          * @return string DFRN feed entries
  77          */
  78         public static function feed($dfrn_id, $owner_nick, $last_update, $direction = 0, $onlyheader = false) {
  79
  80                 $a = get_app();
  81
  82                 $sitefeed    = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
  83                 $public_feed = (($dfrn_id) ? false : true);
  84                 $starred     = false;   // not yet implemented, possible security issues
  85                 $converse    = false;
  86
  87                 if ($public_feed && $a->argc > 2) {
  88                         for ($x = 2; $x < $a->argc; $x++) {
  89                                 if ($a->argv[$x] == 'converse') {
  90                                         $converse = true;
  91                                 }
  92                                 if ($a->argv[$x] == 'starred') {
  93                                         $starred = true;
  94                                 }
  95                                 if ($a->argv[$x] == 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1])) {
  96                                         $category = $a->argv[$x+1];
  97                                 }
  98                         }
  99                 }
 100
 101
 102
 103                 // default permissions - anonymous user
 104
 105                 $sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = '' ";
 106
 107                 $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`, `user`.`account-type`
 108                         FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
 109                         WHERE `contact`.`self` AND `user`.`nickname` = '%s' LIMIT 1",
 110                         dbesc($owner_nick)
 111                 );
 112
 113                 if (! dbm::is_result($r)) {
 114                         killme();
 115                 }
 116
 117                 $owner = $r[0];
 118                 $owner_id = $owner['uid'];
 119                 $owner_nick = $owner['nickname'];
 120
 121                 $sql_post_table = "";
 122
 123                 if (! $public_feed) {
 124
 125                         $sql_extra = '';
 126                         switch($direction) {
 127                                 case (-1):
 128                                         $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
 129                                         $my_id = $dfrn_id;
 130                                         break;
 131                                 case 0:
 132                                         $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 133                                         $my_id = '1:' . $dfrn_id;
 134                                         break;
 135                                 case 1:
 136                                         $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
 137                                         $my_id = '0:' . $dfrn_id;
 138                                         break;
 139                                 default:
 140                                         return false;
 141                                         break; // NOTREACHED
 142                         }
 143
 144                         $r = q("SELECT * FROM `contact` WHERE NOT `blocked` AND `contact`.`uid` = %d $sql_extra LIMIT 1",
 145                                 intval($owner_id)
 146                         );
 147
 148                         if (! dbm::is_result($r)) {
 149                                 killme();
 150                         }
 151
 152                         $contact = $r[0];
 153                         require_once('include/security.php');
 154                         $groups = init_groups_visitor($contact['id']);
 155
 156                         if (count($groups)) {
 157                                 for ($x = 0; $x < count($groups); $x ++)
 158                                         $groups[$x] = '<' . intval($groups[$x]) . '>' ;
 159                                 $gs = implode('|', $groups);
 160                         } else {
 161                                 $gs = '<<>>' ; // Impossible to match
 162                         }
 163
 164                         $sql_extra = sprintf("
 165                                 AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
 166                                 AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
 167                                 AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
 168                                 AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
 169                         ",
 170                                 intval($contact['id']),
 171                                 intval($contact['id']),
 172                                 dbesc($gs),
 173                                 dbesc($gs)
 174                         );
 175                 }
 176
 177                 if ($public_feed) {
 178                         $sort = 'DESC';
 179                 } else {
 180                         $sort = 'ASC';
 181                 }
 182
 183                 if (! strlen($last_update)) {
 184                         $last_update = 'now -30 days';
 185                 }
 186
 187                 if (isset($category)) {
 188                         $sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
 189                                         dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
 190                         //$sql_extra .= file_tag_file_query('item',$category,'category');
 191                 }
 192
 193                 if ($public_feed) {
 194                         if (! $converse) {
 195                                 $sql_extra .= " AND `contact`.`self` = 1 ";
 196                         }
 197                 }
 198
 199                 $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
 200
 201                 $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 202                         `contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 203                         `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 204                         `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 205                         `sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
 206                         FROM `item` USE INDEX (`uid_wall_changed`) $sql_post_table
 207                         STRAIGHT_JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 208                         AND (NOT `contact`.`blocked` OR `contact`.`pending`)
 209                         LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
 210                         WHERE `item`.`uid` = %d AND `item`.`visible` AND NOT `item`.`moderated` AND `item`.`parent` != 0
 211                         AND `item`.`wall` AND `item`.`changed` > '%s'
 212                         $sql_extra
 213                         ORDER BY `item`.`parent` ".$sort.", `item`.`created` ASC LIMIT 0, 300",
 214                         intval($owner_id),
 215                         dbesc($check_date),
 216                         dbesc($sort)
 217                 );
 218
 219                 /*
 220                  * Will check further below if this actually returned results.
 221                  * We will provide an empty feed if that is the case.
 222                  */
 223
 224                 $items = $r;
 225
 226                 $doc = new DOMDocument('1.0', 'utf-8');
 227                 $doc->formatOutput = true;
 228
 229                 $alternatelink = $owner['url'];
 230
 231                 if (isset($category)) {
 232                         $alternatelink .= "/category/".$category;
 233                 }
 234
 235                 if ($public_feed) {
 236                         $author = "dfrn:owner";
 237                 } else {
 238                         $author = "author";
 239                 }
 240
 241                 $root = self::add_header($doc, $owner, $author, $alternatelink, true);
 242
 243                 /// @TODO This hook can't work anymore
 244                 //      call_hooks('atom_feed', $atom);
 245
 246                 if (!dbm::is_result($items) OR $onlyheader) {
 247                         $atom = trim($doc->saveXML());
 248
 249                         call_hooks('atom_feed_end', $atom);
 250
 251                         return $atom;
 252                 }
 253
 254                 foreach ($items as $item) {
 255
 256                         // prevent private email from leaking.
 257                         if ($item['network'] == NETWORK_MAIL) {
 258                                 continue;
 259                         }
 260
 261                         // public feeds get html, our own nodes use bbcode
 262
 263                         if ($public_feed) {
 264                                 $type = 'html';
 265                                 // catch any email that's in a public conversation and make sure it doesn't leak
 266                                 if ($item['private']) {
 267                                         continue;
 268                                 }
 269                         } else {
 270                                 $type = 'text';
 271                         }
 272
 273                         $entry = self::entry($doc, $type, $item, $owner, true);
 274                         $root->appendChild($entry);
 275
 276                 }
 277
 278                 $atom = trim($doc->saveXML());
 279
 280                 call_hooks('atom_feed_end', $atom);
 281
 282                 return $atom;
 283         }
 284
 285         /**
 286          * @brief Create XML text for DFRN mails
 287          *
 288          * @param array $item message elements
 289          * @param array $owner Owner record
 290          *
 291          * @return string DFRN mail
 292          * @todo Add type-hints
 293          */
 294         public static function mail($item, $owner) {
 295                 $doc = new DOMDocument('1.0', 'utf-8');
 296                 $doc->formatOutput = true;
 297
 298                 $root = self::add_header($doc, $owner, "dfrn:owner", "", false);
 299
 300                 $mail = $doc->createElement("dfrn:mail");
 301                 $sender = $doc->createElement("dfrn:sender");
 302
 303                 xml::add_element($doc, $sender, "dfrn:name", $owner['name']);
 304                 xml::add_element($doc, $sender, "dfrn:uri", $owner['url']);
 305                 xml::add_element($doc, $sender, "dfrn:avatar", $owner['thumb']);
 306
 307                 $mail->appendChild($sender);
 308
 309                 xml::add_element($doc, $mail, "dfrn:id", $item['uri']);
 310                 xml::add_element($doc, $mail, "dfrn:in-reply-to", $item['parent-uri']);
 311                 xml::add_element($doc, $mail, "dfrn:sentdate", datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME));
 312                 xml::add_element($doc, $mail, "dfrn:subject", $item['title']);
 313                 xml::add_element($doc, $mail, "dfrn:content", $item['body']);
 314
 315                 $root->appendChild($mail);
 316
 317                 return(trim($doc->saveXML()));
 318         }
 319
 320         /**
 321          * @brief Create XML text for DFRN friend suggestions
 322          *
 323          * @param array $item suggestion elements
 324          * @param array $owner Owner record
 325          *
 326          * @return string DFRN suggestions
 327          * @todo Add type-hints
 328          */
 329         public static function fsuggest($item, $owner) {
 330                 $doc = new DOMDocument('1.0', 'utf-8');
 331                 $doc->formatOutput = true;
 332
 333                 $root = self::add_header($doc, $owner, "dfrn:owner", "", false);
 334
 335                 $suggest = $doc->createElement("dfrn:suggest");
 336
 337                 xml::add_element($doc, $suggest, "dfrn:url", $item['url']);
 338                 xml::add_element($doc, $suggest, "dfrn:name", $item['name']);
 339                 xml::add_element($doc, $suggest, "dfrn:photo", $item['photo']);
 340                 xml::add_element($doc, $suggest, "dfrn:request", $item['request']);
 341                 xml::add_element($doc, $suggest, "dfrn:note", $item['note']);
 342
 343                 $root->appendChild($suggest);
 344
 345                 return(trim($doc->saveXML()));
 346         }
 347
 348         /**
 349          * @brief Create XML text for DFRN relocations
 350          *
 351          * @param array $owner Owner record
 352          * @param int $uid User ID
 353          *
 354          * @return string DFRN relocations
 355          * @todo Add type-hints
 356          */
 357         public static function relocate($owner, $uid) {
 358
 359                 /* get site pubkey. this could be a new installation with no site keys*/
 360                 $pubkey = get_config('system','site_pubkey');
 361                 if (! $pubkey) {
 362                         $res = new_keypair(1024);
 363                         set_config('system','site_prvkey', $res['prvkey']);
 364                         set_config('system','site_pubkey', $res['pubkey']);
 365                 }
 366
 367                 $rp = q("SELECT `resource-id` , `scale`, type FROM `photo`
 368                                 WHERE `profile` = 1 AND `uid` = %d ORDER BY scale;", $uid);
 369                 $photos = array();
 370                 $ext = Photo::supportedTypes();
 371
 372                 foreach ($rp as $p) {
 373                         $photos[$p['scale']] = app::get_baseurl().'/photo/'.$p['resource-id'].'-'.$p['scale'].'.'.$ext[$p['type']];
 374                 }
 375
 376                 unset($rp, $ext);
 377
 378                 $doc = new DOMDocument('1.0', 'utf-8');
 379                 $doc->formatOutput = true;
 380
 381                 $root = self::add_header($doc, $owner, "dfrn:owner", "", false);
 382
 383                 $relocate = $doc->createElement("dfrn:relocate");
 384
 385                 xml::add_element($doc, $relocate, "dfrn:url", $owner['url']);
 386                 xml::add_element($doc, $relocate, "dfrn:name", $owner['name']);
 387                 xml::add_element($doc, $relocate, "dfrn:addr", $owner['addr']);
 388                 xml::add_element($doc, $relocate, "dfrn:avatar", $owner['avatar']);
 389                 xml::add_element($doc, $relocate, "dfrn:photo", $photos[4]);
 390                 xml::add_element($doc, $relocate, "dfrn:thumb", $photos[5]);
 391                 xml::add_element($doc, $relocate, "dfrn:micro", $photos[6]);
 392                 xml::add_element($doc, $relocate, "dfrn:request", $owner['request']);
 393                 xml::add_element($doc, $relocate, "dfrn:confirm", $owner['confirm']);
 394                 xml::add_element($doc, $relocate, "dfrn:notify", $owner['notify']);
 395                 xml::add_element($doc, $relocate, "dfrn:poll", $owner['poll']);
 396                 xml::add_element($doc, $relocate, "dfrn:sitepubkey", get_config('system','site_pubkey'));
 397
 398                 $root->appendChild($relocate);
 399
 400                 return(trim($doc->saveXML()));
 401         }
 402
 403         /**
 404          * @brief Adds the header elements for the DFRN protocol
 405          *
 406          * @param object $doc XML document
 407          * @param array $owner Owner record
 408          * @param string $authorelement Element name for the author
 409          * @param string $alternatelink link to profile or category
 410          * @param bool $public Is it a header for public posts?
 411          *
 412          * @return object XML root object
 413          * @todo Add type-hints
 414          */
 415         private static function add_header($doc, $owner, $authorelement, $alternatelink = "", $public = false) {
 416
 417                 if ($alternatelink == "") {
 418                         $alternatelink = $owner['url'];
 419                 }
 420
 421                 $root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed');
 422                 $doc->appendChild($root);
 423
 424                 $root->setAttribute("xmlns:thr", NAMESPACE_THREAD);
 425                 $root->setAttribute("xmlns:at", NAMESPACE_TOMB);
 426                 $root->setAttribute("xmlns:media", NAMESPACE_MEDIA);
 427                 $root->setAttribute("xmlns:dfrn", NAMESPACE_DFRN);
 428                 $root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
 429                 $root->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
 430                 $root->setAttribute("xmlns:poco", NAMESPACE_POCO);
 431                 $root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
 432                 $root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
 433
 434                 xml::add_element($doc, $root, "id", app::get_baseurl()."/profile/".$owner["nick"]);
 435                 xml::add_element($doc, $root, "title", $owner["name"]);
 436
 437                 $attributes = array("uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION);
 438                 xml::add_element($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
 439
 440                 $attributes = array("rel" => "license", "href" => "http://creativecommons.org/licenses/by/3.0/");
 441                 xml::add_element($doc, $root, "link", "", $attributes);
 442
 443                 $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $alternatelink);
 444                 xml::add_element($doc, $root, "link", "", $attributes);
 445
 446
 447                 if ($public) {
 448                         // DFRN itself doesn't uses this. But maybe someone else wants to subscribe to the public feed.
 449                         ostatus::hublinks($doc, $root);
 450
 451                         $attributes = array("rel" => "salmon", "href" => app::get_baseurl()."/salmon/".$owner["nick"]);
 452                         xml::add_element($doc, $root, "link", "", $attributes);
 453
 454                         $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-replies", "href" => app::get_baseurl()."/salmon/".$owner["nick"]);
 455                         xml::add_element($doc, $root, "link", "", $attributes);
 456
 457                         $attributes = array("rel" => "http://salmon-protocol.org/ns/salmon-mention", "href" => app::get_baseurl()."/salmon/".$owner["nick"]);
 458                         xml::add_element($doc, $root, "link", "", $attributes);
 459                 }
 460
 461                 // For backward compatibility we keep this element
 462                 if ($owner['page-flags'] == PAGE_COMMUNITY) {
 463                         xml::add_element($doc, $root, "dfrn:community", 1);
 464                 }
 465
 466                 // The former element is replaced by this one
 467                 xml::add_element($doc, $root, "dfrn:account_type", $owner["account-type"]);
 468
 469                 /// @todo We need a way to transmit the different page flags like "PAGE_PRVGROUP"
 470
 471                 xml::add_element($doc, $root, "updated", datetime_convert("UTC", "UTC", "now", ATOM_TIME));
 472
 473                 $author = self::add_author($doc, $owner, $authorelement, $public);
 474                 $root->appendChild($author);
 475
 476                 return $root;
 477         }
 478
 479         /**
 480          * @brief Adds the author element in the header for the DFRN protocol
 481          *
 482          * @param object $doc XML document
 483          * @param array $owner Owner record
 484          * @param string $authorelement Element name for the author
 485          *
 486          * @return object XML author object
 487          * @todo Add type-hints
 488          */
 489         private static function add_author($doc, $owner, $authorelement, $public) {
 490
 491                 // Is the profile hidden or shouldn't be published in the net? Then add the "hide" element
 492                 $r = q("SELECT `id` FROM `profile` INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 493                                 WHERE (`hidewall` OR NOT `net-publish`) AND `user`.`uid` = %d",
 494                         intval($owner['uid']));
 495                 if (dbm::is_result($r)) {
 496                         $hidewall = true;
 497                 } else {
 498                         $hidewall = false;
 499                 }
 500
 501                 $author = $doc->createElement($authorelement);
 502
 503                 $namdate = datetime_convert('UTC', 'UTC', $owner['name-date'].'+00:00', ATOM_TIME);
 504                 $uridate = datetime_convert('UTC', 'UTC', $owner['uri-date'].'+00:00', ATOM_TIME);
 505                 $picdate = datetime_convert('UTC', 'UTC', $owner['avatar-date'].'+00:00', ATOM_TIME);
 506
 507                 $attributes = array();
 508
 509                 if (!$public OR !$hidewall) {
 510                         $attributes = array("dfrn:updated" => $namdate);
 511                 }
 512
 513                 xml::add_element($doc, $author, "name", $owner["name"], $attributes);
 514                 xml::add_element($doc, $author, "uri", app::get_baseurl().'/profile/'.$owner["nickname"], $attributes);
 515                 xml::add_element($doc, $author, "dfrn:handle", $owner["addr"], $attributes);
 516
 517                 $attributes = array("rel" => "photo", "type" => "image/jpeg",
 518                                         "media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
 519
 520                 if (!$public OR !$hidewall) {
 521                         $attributes["dfrn:updated"] = $picdate;
 522                 }
 523
 524                 xml::add_element($doc, $author, "link", "", $attributes);
 525
 526                 $attributes["rel"] = "avatar";
 527                 xml::add_element($doc, $author, "link", "", $attributes);
 528
 529                 if ($hidewall) {
 530                         xml::add_element($doc, $author, "dfrn:hide", "true");
 531                 }
 532
 533                 // The following fields will only be generated if the data isn't meant for a public feed
 534                 if ($public) {
 535                         return $author;
 536                 }
 537
 538                 $birthday = feed_birthday($owner['uid'], $owner['timezone']);
 539
 540                 if ($birthday)
 541                         xml::add_element($doc, $author, "dfrn:birthday", $birthday);
 542
 543                 // Only show contact details when we are allowed to
 544                 $r = q("SELECT `profile`.`about`, `profile`.`name`, `profile`.`homepage`, `user`.`nickname`,
 545                                 `user`.`timezone`, `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 546                                 `profile`.`pub_keywords`, `profile`.`xmpp`, `profile`.`dob`
 547                         FROM `profile`
 548                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 549                                 WHERE `profile`.`is-default` AND NOT `user`.`hidewall` AND `user`.`uid` = %d",
 550                         intval($owner['uid']));
 551                 if (dbm::is_result($r)) {
 552                         $profile = $r[0];
 553
 554                         xml::add_element($doc, $author, "poco:displayName", $profile["name"]);
 555                         xml::add_element($doc, $author, "poco:updated", $namdate);
 556
 557                         if (trim($profile["dob"]) > '0001-01-01') {
 558                                 xml::add_element($doc, $author, "poco:birthday", "0000-".date("m-d", strtotime($profile["dob"])));
 559                         }
 560
 561                         xml::add_element($doc, $author, "poco:note", $profile["about"]);
 562                         xml::add_element($doc, $author, "poco:preferredUsername", $profile["nickname"]);
 563
 564                         $savetz = date_default_timezone_get();
 565                         date_default_timezone_set($profile["timezone"]);
 566                         xml::add_element($doc, $author, "poco:utcOffset", date("P"));
 567                         date_default_timezone_set($savetz);
 568
 569                         if (trim($profile["homepage"]) != "") {
 570                                 $urls = $doc->createElement("poco:urls");
 571                                 xml::add_element($doc, $urls, "poco:type", "homepage");
 572                                 xml::add_element($doc, $urls, "poco:value", $profile["homepage"]);
 573                                 xml::add_element($doc, $urls, "poco:primary", "true");
 574                                 $author->appendChild($urls);
 575                         }
 576
 577                         if (trim($profile["pub_keywords"]) != "") {
 578                                 $keywords = explode(",", $profile["pub_keywords"]);
 579
 580                                 foreach ($keywords AS $keyword) {
 581                                         xml::add_element($doc, $author, "poco:tags", trim($keyword));
 582                                 }
 583
 584                         }
 585
 586                         if (trim($profile["xmpp"]) != "") {
 587                                 $ims = $doc->createElement("poco:ims");
 588                                 xml::add_element($doc, $ims, "poco:type", "xmpp");
 589                                 xml::add_element($doc, $ims, "poco:value", $profile["xmpp"]);
 590                                 xml::add_element($doc, $ims, "poco:primary", "true");
 591                                 $author->appendChild($ims);
 592                         }
 593
 594                         if (trim($profile["locality"].$profile["region"].$profile["country-name"]) != "") {
 595                                 $element = $doc->createElement("poco:address");
 596
 597                                 xml::add_element($doc, $element, "poco:formatted", formatted_location($profile));
 598
 599                                 if (trim($profile["locality"]) != "") {
 600                                         xml::add_element($doc, $element, "poco:locality", $profile["locality"]);
 601                                 }
 602
 603                                 if (trim($profile["region"]) != "") {
 604                                         xml::add_element($doc, $element, "poco:region", $profile["region"]);
 605                                 }
 606
 607                                 if (trim($profile["country-name"]) != "") {
 608                                         xml::add_element($doc, $element, "poco:country", $profile["country-name"]);
 609                                 }
 610
 611                                 $author->appendChild($element);
 612                         }
 613                 }
 614
 615                 return $author;
 616         }
 617
 618         /**
 619          * @brief Adds the author elements in the "entry" elements of the DFRN protocol
 620          *
 621          * @param object $doc XML document
 622          * @param string $element Element name for the author
 623          * @param string $contact_url Link of the contact
 624          * @param array $items Item elements
 625          *
 626          * @return object XML author object
 627          * @todo Add type-hints
 628          */
 629         private static function add_entry_author($doc, $element, $contact_url, $item) {
 630
 631                 $contact = get_contact_details_by_url($contact_url, $item["uid"]);
 632
 633                 $author = $doc->createElement($element);
 634                 xml::add_element($doc, $author, "name", $contact["name"]);
 635                 xml::add_element($doc, $author, "uri", $contact["url"]);
 636                 xml::add_element($doc, $author, "dfrn:handle", $contact["addr"]);
 637
 638                 /// @Todo
 639                 /// - Check real image type and image size
 640                 /// - Check which of these boths elements we should use
 641                 $attributes = array(
 642                                 "rel" => "photo",
 643                                 "type" => "image/jpeg",
 644                                 "media:width" => 80,
 645                                 "media:height" => 80,
 646                                 "href" => $contact["photo"]);
 647                 xml::add_element($doc, $author, "link", "", $attributes);
 648
 649                 $attributes = array(
 650                                 "rel" => "avatar",
 651                                 "type" => "image/jpeg",
 652                                 "media:width" => 80,
 653                                 "media:height" => 80,
 654                                 "href" => $contact["photo"]);
 655                 xml::add_element($doc, $author, "link", "", $attributes);
 656
 657                 return $author;
 658         }
 659
 660         /**
 661          * @brief Adds the activity elements
 662          *
 663          * @param object $doc XML document
 664          * @param string $element Element name for the activity
 665          * @param string $activity activity value
 666          *
 667          * @return object XML activity object
 668          * @todo Add type-hints
 669          */
 670         private static function create_activity($doc, $element, $activity) {
 671
 672                 if ($activity) {
 673                         $entry = $doc->createElement($element);
 674
 675                         $r = parse_xml_string($activity, false);
 676                         if (!$r) {
 677                                 return false;
 678                         }
 679                         if ($r->type) {
 680                                 xml::add_element($doc, $entry, "activity:object-type", $r->type);
 681                         }
 682                         if ($r->id) {
 683                                 xml::add_element($doc, $entry, "id", $r->id);
 684                         }
 685                         if ($r->title) {
 686                                 xml::add_element($doc, $entry, "title", $r->title);
 687                         }
 688
 689                         if ($r->link) {
 690                                 if (substr($r->link, 0, 1) == '<') {
 691                                         if (strstr($r->link, '&') && (! strstr($r->link, '&amp;'))) {
 692                                                 $r->link = str_replace('&', '&amp;', $r->link);
 693                                         }
 694
 695                                         $r->link = preg_replace('/\<link(.*?)\"\>/', '<link$1"/>', $r->link);
 696
 697                                         // XML does need a single element as root element so we add a dummy element here
 698                                         $data = parse_xml_string("<dummy>" . $r->link . "</dummy>", false);
 699                                         if (is_object($data)) {
 700                                                 foreach ($data->link AS $link) {
 701                                                         $attributes = array();
 702                                                         foreach ($link->attributes() AS $parameter => $value) {
 703                                                                 $attributes[$parameter] = $value;
 704                                                         }
 705                                                         xml::add_element($doc, $entry, "link", "", $attributes);
 706                                                 }
 707                                         }
 708                                 } else {
 709                                         $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $r->link);
 710                                         xml::add_element($doc, $entry, "link", "", $attributes);
 711                                 }
 712                         }
 713                         if ($r->content) {
 714                                 xml::add_element($doc, $entry, "content", bbcode($r->content), array("type" => "html"));
 715                         }
 716
 717                         return $entry;
 718                 }
 719
 720                 return false;
 721         }
 722
 723         /**
 724          * @brief Adds the elements for attachments
 725          *
 726          * @param object $doc XML document
 727          * @param object $root XML root
 728          * @param array $item Item element
 729          *
 730          * @return object XML attachment object
 731          * @todo Add type-hints
 732          */
 733         private static function get_attachment($doc, $root, $item) {
 734                 $arr = explode('[/attach],',$item['attach']);
 735                 if (count($arr)) {
 736                         foreach ($arr as $r) {
 737                                 $matches = false;
 738                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
 739                                 if ($cnt) {
 740                                         $attributes = array("rel" => "enclosure",
 741                                                         "href" => $matches[1],
 742                                                         "type" => $matches[3]);
 743
 744                                         if (intval($matches[2])) {
 745                                                 $attributes["length"] = intval($matches[2]);
 746                                         }
 747
 748                                         if (trim($matches[4]) != "") {
 749                                                 $attributes["title"] = trim($matches[4]);
 750                                         }
 751
 752                                         xml::add_element($doc, $root, "link", "", $attributes);
 753                                 }
 754                         }
 755                 }
 756         }
 757
 758         /**
 759          * @brief Adds the "entry" elements for the DFRN protocol
 760          *
 761          * @param object $doc XML document
 762          * @param string $type "text" or "html"
 763          * @param array $item Item element
 764          * @param array $owner Owner record
 765          * @param bool $comment Trigger the sending of the "comment" element
 766          * @param int $cid Contact ID of the recipient
 767          *
 768          * @return object XML entry object
 769          * @todo Add type-hints
 770          */
 771         private static function entry($doc, $type, $item, $owner, $comment = false, $cid = 0) {
 772
 773                 $mentioned = array();
 774
 775                 if (!$item['parent']) {
 776                         return;
 777                 }
 778
 779                 if ($item['deleted']) {
 780                         $attributes = array("ref" => $item['uri'], "when" => datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME));
 781                         return xml::create_element($doc, "at:deleted-entry", "", $attributes);
 782                 }
 783
 784                 $entry = $doc->createElement("entry");
 785
 786                 if ($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid']) {
 787                         $body = fix_private_photos($item['body'],$owner['uid'],$item,$cid);
 788                 } else {
 789                         $body = $item['body'];
 790                 }
 791
 792                 // Remove the abstract element. It is only locally important.
 793                 $body = remove_abstract($body);
 794
 795                 if ($type == 'html') {
 796                         $htmlbody = $body;
 797
 798                         if ($item['title'] != "") {
 799                                 $htmlbody = "[b]".$item['title']."[/b]\n\n".$htmlbody;
 800                         }
 801
 802                         $htmlbody = bbcode($htmlbody, false, false, 7);
 803                 }
 804
 805                 $author = self::add_entry_author($doc, "author", $item["author-link"], $item);
 806                 $entry->appendChild($author);
 807
 808                 $dfrnowner = self::add_entry_author($doc, "dfrn:owner", $item["owner-link"], $item);
 809                 $entry->appendChild($dfrnowner);
 810
 811                 if (($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
 812                         $parent = q("SELECT `guid` FROM `item` WHERE `id` = %d", intval($item["parent"]));
 813                         $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
 814                         $attributes = array("ref" => $parent_item, "type" => "text/html",
 815                                                 "href" => app::get_baseurl().'/display/'.$parent[0]['guid'],
 816                                                 "dfrn:diaspora_guid" => $parent[0]['guid']);
 817                         xml::add_element($doc, $entry, "thr:in-reply-to", "", $attributes);
 818                 }
 819
 820                 xml::add_element($doc, $entry, "id", $item["uri"]);
 821                 xml::add_element($doc, $entry, "title", $item["title"]);
 822
 823                 xml::add_element($doc, $entry, "published", datetime_convert("UTC","UTC",$item["created"]."+00:00",ATOM_TIME));
 824                 xml::add_element($doc, $entry, "updated", datetime_convert("UTC","UTC",$item["edited"]."+00:00",ATOM_TIME));
 825
 826                 // "dfrn:env" is used to read the content
 827                 xml::add_element($doc, $entry, "dfrn:env", base64url_encode($body, true));
 828
 829                 // The "content" field is not read by the receiver. We could remove it when the type is "text"
 830                 // We keep it at the moment, maybe there is some old version that doesn't read "dfrn:env"
 831                 xml::add_element($doc, $entry, "content", (($type == 'html') ? $htmlbody : $body), array("type" => $type));
 832
 833                 // We save this value in "plink". Maybe we should read it from there as well?
 834                 xml::add_element($doc, $entry, "link", "", array("rel" => "alternate", "type" => "text/html",
 835                                                                 "href" => app::get_baseurl()."/display/".$item["guid"]));
 836
 837                 // "comment-allow" is some old fashioned stuff for old Friendica versions.
 838                 // It is included in the rewritten code for completeness
 839                 if ($comment) {
 840                         xml::add_element($doc, $entry, "dfrn:comment-allow", intval($item['last-child']));
 841                 }
 842
 843                 if ($item['location']) {
 844                         xml::add_element($doc, $entry, "dfrn:location", $item['location']);
 845                 }
 846
 847                 if ($item['coord']) {
 848                         xml::add_element($doc, $entry, "georss:point", $item['coord']);
 849                 }
 850
 851                 if (($item['private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid'])) {
 852                         xml::add_element($doc, $entry, "dfrn:private", (($item['private']) ? $item['private'] : 1));
 853                 }
 854
 855                 if ($item['extid']) {
 856                         xml::add_element($doc, $entry, "dfrn:extid", $item['extid']);
 857                 }
 858
 859                 if ($item['bookmark']) {
 860                         xml::add_element($doc, $entry, "dfrn:bookmark", "true");
 861                 }
 862
 863                 if ($item['app']) {
 864                         xml::add_element($doc, $entry, "statusnet:notice_info", "", array("local_id" => $item['id'], "source" => $item['app']));
 865                 }
 866
 867                 xml::add_element($doc, $entry, "dfrn:diaspora_guid", $item["guid"]);
 868
 869                 // The signed text contains the content in Markdown, the sender handle and the signatur for the content
 870                 // It is needed for relayed comments to Diaspora.
 871                 if($item['signed_text']) {
 872                         $sign = base64_encode(json_encode(array('signed_text' => $item['signed_text'],'signature' => $item['signature'],'signer' => $item['signer'])));
 873                         xml::add_element($doc, $entry, "dfrn:diaspora_signature", $sign);
 874                 }
 875
 876                 xml::add_element($doc, $entry, "activity:verb", construct_verb($item));
 877
 878                 if ($item['object-type'] != "") {
 879                         xml::add_element($doc, $entry, "activity:object-type", $item['object-type']);
 880                 } elseif ($item['id'] == $item['parent']) {
 881                         xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_NOTE);
 882                 } else {
 883                         xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_COMMENT);
 884                 }
 885
 886                 $actobj = self::create_activity($doc, "activity:object", $item['object']);
 887                 if ($actobj) {
 888                         $entry->appendChild($actobj);
 889                 }
 890
 891                 $actarg = self::create_activity($doc, "activity:target", $item['target']);
 892                 if ($actarg) {
 893                         $entry->appendChild($actarg);
 894                 }
 895
 896                 $tags = item_getfeedtags($item);
 897
 898                 if (count($tags)) {
 899                         foreach ($tags as $t) {
 900                                 if (($type != 'html') OR ($t[0] != "@")) {
 901                                         xml::add_element($doc, $entry, "category", "", array("scheme" => "X-DFRN:".$t[0].":".$t[1], "term" => $t[2]));
 902                                 }
 903                         }
 904                 }
 905
 906                 if (count($tags)) {
 907                         foreach ($tags as $t) {
 908                                 if ($t[0] == "@") {
 909                                         $mentioned[$t[1]] = $t[1];
 910                                 }
 911                         }
 912                 }
 913
 914                 foreach ($mentioned AS $mention) {
 915                         $r = q("SELECT `forum`, `prv` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'",
 916                                 intval($owner["uid"]),
 917                                 dbesc(normalise_link($mention)));
 918
 919                         if (dbm::is_result($r) AND ($r[0]["forum"] OR $r[0]["prv"])) {
 920                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
 921                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_GROUP,
 922                                                                                         "href" => $mention));
 923                         } else {
 924                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
 925                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_PERSON,
 926                                                                                         "href" => $mention));
 927                         }
 928                 }
 929
 930                 self::get_attachment($doc, $entry, $item);
 931
 932                 return $entry;
 933         }
 934
 935         /**
 936          * @brief encrypts data via AES
 937          *
 938          * @param string $data The data that is to be encrypted
 939          * @param string $key The AES key
 940          *
 941          * @return string encrypted data
 942          */
 943         private static function aes_encrypt($data, $key) {
 944                 return openssl_encrypt($data, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
 945         }
 946
 947         /**
 948          * @brief decrypts data via AES
 949          *
 950          * @param string $encrypted The encrypted data
 951          * @param string $key The AES key
 952          *
 953          * @return string decrypted data
 954          */
 955         public static function aes_decrypt($encrypted, $key) {
 956                 return openssl_decrypt($encrypted, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
 957         }
 958
 959         /**
 960          * @brief Delivers the atom content to the contacts
 961          *
 962          * @param array $owner Owner record
 963          * @param array $contactr Contact record of the receiver
 964          * @param string $atom Content that will be transmitted
 965          * @param bool $dissolve (to be documented)
 966          *
 967          * @return int Deliver status. -1 means an error.
 968          * @todo Add array type-hint for $owner, $contact
 969          */
 970         public static function deliver($owner,$contact,$atom, $dissolve = false) {
 971
 972                 $a = get_app();
 973
 974                 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 975
 976                 if ($contact['duplex'] && $contact['dfrn-id']) {
 977                         $idtosend = '0:' . $orig_id;
 978                 }
 979                 if ($contact['duplex'] && $contact['issued-id']) {
 980                         $idtosend = '1:' . $orig_id;
 981                 }
 982
 983                 $rino = get_config('system', 'rino_encrypt');
 984                 $rino = intval($rino);
 985
 986                 logger("Local rino version: ". $rino, LOGGER_DEBUG);
 987
 988                 $ssl_val = intval(get_config('system','ssl_policy'));
 989                 $ssl_policy = '';
 990
 991                 switch ($ssl_val) {
 992                         case SSL_POLICY_FULL:
 993                                 $ssl_policy = 'full';
 994                                 break;
 995                         case SSL_POLICY_SELFSIGN:
 996                                 $ssl_policy = 'self';
 997                                 break;
 998                         case SSL_POLICY_NONE:
 999                         default:
1000                                 $ssl_policy = 'none';
1001                                 break;
1002                 }
1003
1004                 $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
1005
1006                 logger('dfrn_deliver: ' . $url);
1007
1008                 $ret = z_fetch_url($url);
1009
1010                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1011                         return -2; // timed out
1012                 }
1013
1014                 $xml = $ret['body'];
1015
1016                 $curl_stat = $a->get_curl_code();
1017                 if (!$curl_stat) {
1018                         return -3; // timed out
1019                 }
1020
1021                 logger('dfrn_deliver: ' . $xml, LOGGER_DATA);
1022
1023                 if (! $xml) {
1024                         return 3;
1025                 }
1026
1027                 if (strpos($xml,'<?xml') === false) {
1028                         logger('dfrn_deliver: no valid XML returned');
1029                         logger('dfrn_deliver: returned XML: ' . $xml, LOGGER_DATA);
1030                         return 3;
1031                 }
1032
1033                 $res = parse_xml_string($xml);
1034
1035                 if ((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id))) {
1036                         return (($res->status) ? $res->status : 3);
1037                 }
1038
1039                 $postvars     = array();
1040                 $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
1041                 $challenge    = hex2bin((string) $res->challenge);
1042                 $perm         = (($res->perm) ? $res->perm : null);
1043                 $dfrn_version = (float) (($res->dfrn_version) ? $res->dfrn_version : 2.0);
1044                 $rino_remote_version = intval($res->rino);
1045                 $page         = (($owner['page-flags'] == PAGE_COMMUNITY) ? 1 : 0);
1046
1047                 logger("Remote rino version: ".$rino_remote_version." for ".$contact["url"], LOGGER_DEBUG);
1048
1049                 if ($owner['page-flags'] == PAGE_PRVGROUP) {
1050                         $page = 2;
1051                 }
1052
1053                 $final_dfrn_id = '';
1054
1055                 if ($perm) {
1056                         if ((($perm == 'rw') && (! intval($contact['writable'])))
1057                                 || (($perm == 'r') && (intval($contact['writable'])))) {
1058                                 q("update contact set writable = %d where id = %d",
1059                                         intval(($perm == 'rw') ? 1 : 0),
1060                                         intval($contact['id'])
1061                                 );
1062                                 $contact['writable'] = (string) 1 - intval($contact['writable']);
1063                         }
1064                 }
1065
1066                 if (($contact['duplex'] && strlen($contact['pubkey']))
1067                         || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
1068                         || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
1069                         openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
1070                         openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
1071                 } else {
1072                         openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
1073                         openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
1074                 }
1075
1076                 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
1077
1078                 if (strpos($final_dfrn_id,':') == 1) {
1079                         $final_dfrn_id = substr($final_dfrn_id,2);
1080                 }
1081
1082                 if ($final_dfrn_id != $orig_id) {
1083                         logger('dfrn_deliver: wrong dfrn_id.');
1084                         // did not decode properly - cannot trust this site
1085                         return 3;
1086                 }
1087
1088                 $postvars['dfrn_id']      = $idtosend;
1089                 $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
1090                 if ($dissolve) {
1091                         $postvars['dissolve'] = '1';
1092                 }
1093
1094
1095                 if ((($contact['rel']) && ($contact['rel'] != CONTACT_IS_SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1096                         $postvars['data'] = $atom;
1097                         $postvars['perm'] = 'rw';
1098                 } else {
1099                         $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
1100                         $postvars['perm'] = 'r';
1101                 }
1102
1103                 $postvars['ssl_policy'] = $ssl_policy;
1104
1105                 if ($page) {
1106                         $postvars['page'] = $page;
1107                 }
1108
1109
1110                 if ($rino > 0 && $rino_remote_version > 0 && (! $dissolve)) {
1111                         logger('rino version: '. $rino_remote_version);
1112
1113                         switch ($rino_remote_version) {
1114                                 case 1:
1115                                         // Deprecated rino version!
1116                                         $key = openssl_random_pseudo_bytes(16);
1117                                         $data = self::aes_encrypt($postvars['data'], $key);
1118                                         break;
1119                                 case 2:
1120                                         // RINO 2 based on php-encryption
1121                                         try {
1122                                                 $key = Crypto::createNewRandomKey();
1123                                         } catch (CryptoTestFailed $ex) {
1124                                                 logger('Cannot safely create a key');
1125                                                 return -4;
1126                                         } catch (CannotPerformOperation $ex) {
1127                                                 logger('Cannot safely create a key');
1128                                                 return -5;
1129                                         }
1130                                         try {
1131                                                 $data = Crypto::encrypt($postvars['data'], $key);
1132                                         } catch (CryptoTestFailed $ex) {
1133                                                 logger('Cannot safely perform encryption');
1134                                                 return -6;
1135                                         } catch (CannotPerformOperation $ex) {
1136                                                 logger('Cannot safely perform encryption');
1137                                                 return -7;
1138                                         }
1139                                         break;
1140                                 default:
1141                                         logger("rino: invalid requested verision '$rino_remote_version'");
1142                                         return -8;
1143                         }
1144
1145                         $postvars['rino'] = $rino_remote_version;
1146                         $postvars['data'] = bin2hex($data);
1147
1148                         //logger('rino: sent key = ' . $key, LOGGER_DEBUG);
1149
1150
1151                         if ($dfrn_version >= 2.1) {
1152                                 if (($contact['duplex'] && strlen($contact['pubkey']))
1153                                                 || ($owner['page-flags'] == PAGE_COMMUNITY && strlen($contact['pubkey']))
1154                                                 || ($contact['rel'] == CONTACT_IS_SHARING && strlen($contact['pubkey']))) {
1155                                         openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1156                                 } else {
1157                                         openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1158                                 }
1159
1160                         } else {
1161                                 if (($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
1162                                         openssl_private_encrypt($key,$postvars['key'],$contact['prvkey']);
1163                                 } else {
1164                                         openssl_public_encrypt($key,$postvars['key'],$contact['pubkey']);
1165                                 }
1166
1167                         }
1168
1169                         logger('md5 rawkey ' . md5($postvars['key']));
1170
1171                         $postvars['key'] = bin2hex($postvars['key']);
1172                 }
1173
1174
1175                 logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true), LOGGER_DATA);
1176
1177                 $xml = post_url($contact['notify'], $postvars);
1178
1179                 logger('dfrn_deliver: ' . "RECEIVED: " . $xml, LOGGER_DATA);
1180
1181                 $curl_stat = $a->get_curl_code();
1182                 if ((!$curl_stat) || (!strlen($xml))) {
1183                         return -9; // timed out
1184                 }
1185
1186                 if (($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after'))) {
1187                         return -10;
1188                 }
1189
1190                 if (strpos($xml,'<?xml') === false) {
1191                         logger('dfrn_deliver: phase 2: no valid XML returned');
1192                         logger('dfrn_deliver: phase 2: returned XML: ' . $xml, LOGGER_DATA);
1193                         return 3;
1194                 }
1195
1196                 if ($contact['term-date'] > NULL_DATE) {
1197                         logger("dfrn_deliver: $url back from the dead - removing mark for death");
1198                         require_once('include/Contact.php');
1199                         unmark_for_death($contact);
1200                 }
1201
1202                 $res = parse_xml_string($xml);
1203
1204                 return $res->status;
1205         }
1206
1207         /**
1208          * @brief Add new birthday event for this person
1209          *
1210          * @param array $contact Contact record
1211          * @param string $birthday Birthday of the contact
1212          * @todo Add array type-hint for $contact
1213          */
1214         private static function birthday_event($contact, $birthday) {
1215
1216                 // Check for duplicates
1217                 $r = q("SELECT `id` FROM `event` WHERE `uid` = %d AND `cid` = %d AND `start` = '%s' AND `type` = '%s' LIMIT 1",
1218                         intval($contact["uid"]),
1219                         intval($contact["id"]),
1220                         dbesc(datetime_convert("UTC","UTC", $birthday)),
1221                         dbesc("birthday"));
1222
1223                 if (dbm::is_result($r)) {
1224                         return;
1225                 }
1226
1227                 logger("updating birthday: ".$birthday." for contact ".$contact["id"]);
1228
1229                 $bdtext = sprintf(t("%s\'s birthday"), $contact["name"]);
1230                 $bdtext2 = sprintf(t("Happy Birthday %s"), " [url=".$contact["url"]."]".$contact["name"]."[/url]") ;
1231
1232                 $r = q("INSERT INTO `event` (`uid`,`cid`,`created`,`edited`,`start`,`finish`,`summary`,`desc`,`type`)
1233                         VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
1234                         intval($contact["uid"]),
1235                         intval($contact["id"]),
1236                         dbesc(datetime_convert()),
1237                         dbesc(datetime_convert()),
1238                         dbesc(datetime_convert("UTC","UTC", $birthday)),
1239                         dbesc(datetime_convert("UTC","UTC", $birthday." + 1 day ")),
1240                         dbesc($bdtext),
1241                         dbesc($bdtext2),
1242                         dbesc("birthday")
1243                 );
1244         }
1245
1246         /**
1247          * @brief Fetch the author data from head or entry items
1248          *
1249          * @param object $xpath XPath object
1250          * @param object $context In which context should the data be searched
1251          * @param array $importer Record of the importer user mixed with contact of the content
1252          * @param string $element Element name from which the data is fetched
1253          * @param bool $onlyfetch Should the data only be fetched or should it update the contact record as well
1254          *
1255          * @return Returns an array with relevant data of the author
1256          * @todo Find good type-hints for all parameter
1257          */
1258         private static function fetchauthor($xpath, $context, $importer, $element, $onlyfetch, $xml = "") {
1259
1260                 $author = array();
1261                 $author["name"] = $xpath->evaluate($element."/atom:name/text()", $context)->item(0)->nodeValue;
1262                 $author["link"] = $xpath->evaluate($element."/atom:uri/text()", $context)->item(0)->nodeValue;
1263
1264                 $r = q("SELECT `id`, `uid`, `url`, `network`, `avatar-date`, `name-date`, `uri-date`, `addr`,
1265                                 `name`, `nick`, `about`, `location`, `keywords`, `xmpp`, `bdyear`, `bd`, `hidden`, `contact-type`
1266                                 FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'",
1267                         intval($importer["uid"]), dbesc(normalise_link($author["link"])), dbesc(NETWORK_STATUSNET));
1268
1269                 if (dbm::is_result($r)) {
1270                         $contact = $r[0];
1271                         $author["contact-id"] = $r[0]["id"];
1272                         $author["network"] = $r[0]["network"];
1273                 } else {
1274                         if (!$onlyfetch) {
1275                                 logger("Contact ".$author["link"]." wasn't found for user ".$importer["uid"]." XML: ".$xml, LOGGER_DEBUG);
1276                         }
1277
1278                         $author["contact-id"] = $importer["id"];
1279                         $author["network"] = $importer["network"];
1280                         $onlyfetch = true;
1281                 }
1282
1283                 // Until now we aren't serving different sizes - but maybe later
1284                 $avatarlist = array();
1285                 /// @todo check if "avatar" or "photo" would be the best field in the specification
1286                 $avatars = $xpath->query($element."/atom:link[@rel='avatar']", $context);
1287                 foreach ($avatars AS $avatar) {
1288                         $href = "";
1289                         $width = 0;
1290                         foreach ($avatar->attributes AS $attributes) {
1291                                 /// @TODO Rewrite these similar if() to one switch
1292                                 if ($attributes->name == "href") {
1293                                         $href = $attributes->textContent;
1294                                 }
1295                                 if ($attributes->name == "width") {
1296                                         $width = $attributes->textContent;
1297                                 }
1298                                 if ($attributes->name == "updated") {
1299                                         $contact["avatar-date"] = $attributes->textContent;
1300                                 }
1301                         }
1302                         if (($width > 0) AND ($href != "")) {
1303                                 $avatarlist[$width] = $href;
1304                         }
1305                 }
1306                 if (count($avatarlist) > 0) {
1307                         krsort($avatarlist);
1308                         $author["avatar"] = current($avatarlist);
1309                 }
1310
1311                 if (dbm::is_result($r) AND !$onlyfetch) {
1312                         logger("Check if contact details for contact " . $r[0]["id"] . " (" . $r[0]["nick"] . ") have to be updated.", LOGGER_DEBUG);
1313
1314                         $poco = array("url" => $contact["url"]);
1315
1316                         // When was the last change to name or uri?
1317                         $name_element = $xpath->query($element . "/atom:name", $context)->item(0);
1318                         foreach ($name_element->attributes AS $attributes) {
1319                                 if ($attributes->name == "updated") {
1320                                         $poco["name-date"] = $attributes->textContent;
1321                                 }
1322                         }
1323
1324                         $link_element = $xpath->query($element . "/atom:link", $context)->item(0);
1325                         foreach ($link_element->attributes AS $attributes) {
1326                                 if ($attributes->name == "updated") {
1327                                         $poco["uri-date"] = $attributes->textContent;
1328                                 }
1329                         }
1330
1331                         // Update contact data
1332                         $value = $xpath->evaluate($element . "/dfrn:handle/text()", $context)->item(0)->nodeValue;
1333                         if ($value != "") {
1334                                 $poco["addr"] = $value;
1335                         }
1336
1337                         $value = $xpath->evaluate($element . "/poco:displayName/text()", $context)->item(0)->nodeValue;
1338                         if ($value != "") {
1339                                 $poco["name"] = $value;
1340                         }
1341
1342                         $value = $xpath->evaluate($element . "/poco:preferredUsername/text()", $context)->item(0)->nodeValue;
1343                         if ($value != "") {
1344                                 $poco["nick"] = $value;
1345                         }
1346
1347                         $value = $xpath->evaluate($element . "/poco:note/text()", $context)->item(0)->nodeValue;
1348                         if ($value != "") {
1349                                 $poco["about"] = $value;
1350                         }
1351
1352                         $value = $xpath->evaluate($element . "/poco:address/poco:formatted/text()", $context)->item(0)->nodeValue;
1353                         if ($value != "") {
1354                                 $poco["location"] = $value;
1355                         }
1356
1357                         /// @todo Only search for elements with "poco:type" = "xmpp"
1358                         $value = $xpath->evaluate($element . "/poco:ims/poco:value/text()", $context)->item(0)->nodeValue;
1359                         if ($value != "") {
1360                                 $poco["xmpp"] = $value;
1361                         }
1362
1363                         /// @todo Add support for the following fields that we don't support by now in the contact table:
1364                         /// - poco:utcOffset
1365                         /// - poco:urls
1366                         /// - poco:locality
1367                         /// - poco:region
1368                         /// - poco:country
1369
1370                         // If the "hide" element is present then the profile isn't searchable.
1371                         $hide = intval($xpath->evaluate($element . "/dfrn:hide/text()", $context)->item(0)->nodeValue == "true");
1372
1373                         logger("Hidden status for contact " . $contact["url"] . ": " . $hide, LOGGER_DEBUG);
1374
1375                         // If the contact isn't searchable then set the contact to "hidden".
1376                         // Problem: This can be manually overridden by the user.
1377                         if ($hide) {
1378                                 $contact["hidden"] = true;
1379                         }
1380
1381                         // Save the keywords into the contact table
1382                         $tags = array();
1383                         $tagelements = $xpath->evaluate($element . "/poco:tags/text()", $context);
1384                         foreach ($tagelements AS $tag) {
1385                                 $tags[$tag->nodeValue] = $tag->nodeValue;
1386                         }
1387
1388                         if (count($tags)) {
1389                                 $poco["keywords"] = implode(", ", $tags);
1390                         }
1391
1392                         // "dfrn:birthday" contains the birthday converted to UTC
1393                         $old_bdyear = $contact["bdyear"];
1394
1395                         $birthday = $xpath->evaluate($element . "/dfrn:birthday/text()", $context)->item(0)->nodeValue;
1396
1397                         if (strtotime($birthday) > time()) {
1398                                 $bd_timestamp = strtotime($birthday);
1399
1400                                 $poco["bdyear"] = date("Y", $bd_timestamp);
1401                         }
1402
1403                         // "poco:birthday" is the birthday in the format "yyyy-mm-dd"
1404                         $value = $xpath->evaluate($element . "/poco:birthday/text()", $context)->item(0)->nodeValue;
1405
1406                         if (!in_array($value, array("", "0000-00-00", "0001-01-01"))) {
1407                                 $bdyear = date("Y");
1408                                 $value = str_replace("0000", $bdyear, $value);
1409
1410                                 if (strtotime($value) < time()) {
1411                                         $value = str_replace($bdyear, $bdyear + 1, $value);
1412                                         $bdyear = $bdyear + 1;
1413                                 }
1414
1415                                 $poco["bd"] = $value;
1416                         }
1417
1418                         $contact = array_merge($contact, $poco);
1419
1420                         if ($old_bdyear != $contact["bdyear"]) {
1421                                 self::birthday_event($contact, $birthday);
1422                         }
1423
1424                         // Get all field names
1425                         $fields = array();
1426                         foreach ($r[0] AS $field => $data) {
1427                                 $fields[$field] = $data;
1428                         }
1429
1430                         unset($fields["id"]);
1431                         unset($fields["uid"]);
1432                         unset($fields["url"]);
1433                         unset($fields["avatar-date"]);
1434                         unset($fields["name-date"]);
1435                         unset($fields["uri-date"]);
1436
1437                         // Update check for this field has to be done differently
1438                         $datefields = array("name-date", "uri-date");
1439                         foreach ($datefields AS $field) {
1440                                 if (strtotime($contact[$field]) > strtotime($r[0][$field])) {
1441                                         logger("Difference for contact " . $contact["id"] . " in field '" . $field . "'. New value: '" . $contact[$field] . "', old value '" . $r[0][$field] . "'", LOGGER_DEBUG);
1442                                         $update = true;
1443                                 }
1444                         }
1445
1446                         foreach ($fields AS $field => $data) {
1447                                 if ($contact[$field] != $r[0][$field]) {
1448                                         logger("Difference for contact " . $contact["id"] . " in field '" . $field . "'. New value: '" . $contact[$field] . "', old value '" . $r[0][$field] . "'", LOGGER_DEBUG);
1449                                         $update = true;
1450                                 }
1451                         }
1452
1453                         if ($update) {
1454                                 logger("Update contact data for contact " . $contact["id"] . " (" . $contact["nick"] . ")", LOGGER_DEBUG);
1455
1456                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `about` = '%s', `location` = '%s',
1457                                         `addr` = '%s', `keywords` = '%s', `bdyear` = '%s', `bd` = '%s', `hidden` = %d,
1458                                         `xmpp` = '%s', `name-date`  = '%s', `uri-date` = '%s'
1459                                         WHERE `id` = %d AND `network` = '%s'",
1460                                         dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["about"]), dbesc($contact["location"]),
1461                                         dbesc($contact["addr"]), dbesc($contact["keywords"]), dbesc($contact["bdyear"]),
1462                                         dbesc($contact["bd"]), intval($contact["hidden"]), dbesc($contact["xmpp"]),
1463                                         dbesc($contact["name-date"]), dbesc($contact["uri-date"]),
1464                                         intval($contact["id"]), dbesc($contact["network"]));
1465                         }
1466
1467                         update_contact_avatar($author["avatar"], $importer["uid"], $contact["id"],
1468                                                 (strtotime($contact["avatar-date"]) > strtotime($r[0]["avatar-date"])));
1469
1470                         /*
1471                          * The generation is a sign for the reliability of the provided data.
1472                          * It is used in the socgraph.php to prevent that old contact data
1473                          * that was relayed over several servers can overwrite contact
1474                          * data that we received directly.
1475                          */
1476
1477                         $poco["generation"] = 2;
1478                         $poco["photo"] = $author["avatar"];
1479                         $poco["hide"] = $hide;
1480                         $poco["contact-type"] = $contact["contact-type"];
1481                         $gcid = update_gcontact($poco);
1482
1483                         link_gcontact($gcid, $importer["uid"], $contact["id"]);
1484                 }
1485
1486                 return($author);
1487         }
1488
1489         /**
1490          * @brief Transforms activity objects into an XML string
1491          *
1492          * @param object $xpath XPath object
1493          * @param object $activity Activity object
1494          * @param text $element element name
1495          *
1496          * @return string XML string
1497          * @todo Find good type-hints for all parameter
1498          */
1499         private static function transform_activity($xpath, $activity, $element) {
1500                 if (!is_object($activity)) {
1501                         return "";
1502                 }
1503
1504                 $obj_doc = new DOMDocument("1.0", "utf-8");
1505                 $obj_doc->formatOutput = true;
1506
1507                 $obj_element = $obj_doc->createElementNS(NAMESPACE_ATOM1, $element);
1508
1509                 $activity_type = $xpath->query("activity:object-type/text()", $activity)->item(0)->nodeValue;
1510                 xml::add_element($obj_doc, $obj_element, "type", $activity_type);
1511
1512                 $id = $xpath->query("atom:id", $activity)->item(0);
1513                 if (is_object($id)) {
1514                         $obj_element->appendChild($obj_doc->importNode($id, true));
1515                 }
1516
1517                 $title = $xpath->query("atom:title", $activity)->item(0);
1518                 if (is_object($title)) {
1519                         $obj_element->appendChild($obj_doc->importNode($title, true));
1520                 }
1521
1522                 $links = $xpath->query("atom:link", $activity);
1523                 if (is_object($links)) {
1524                         foreach ($links AS $link) {
1525                                 $obj_element->appendChild($obj_doc->importNode($link, true));
1526                         }
1527                 }
1528
1529                 $content = $xpath->query("atom:content", $activity)->item(0);
1530                 if (is_object($content)) {
1531                         $obj_element->appendChild($obj_doc->importNode($content, true));
1532                 }
1533
1534                 $obj_doc->appendChild($obj_element);
1535
1536                 $objxml = $obj_doc->saveXML($obj_element);
1537
1538                 /// @todo This isn't totally clean. We should find a way to transform the namespaces
1539                 $objxml = str_replace("<".$element.' xmlns="http://www.w3.org/2005/Atom">', "<".$element.">", $objxml);
1540                 return($objxml);
1541         }
1542
1543         /**
1544          * @brief Processes the mail elements
1545          *
1546          * @param object $xpath XPath object
1547          * @param object $mail mail elements
1548          * @param array $importer Record of the importer user mixed with contact of the content
1549          * @todo Find good type-hints for all parameter
1550          */
1551         private static function process_mail($xpath, $mail, $importer) {
1552
1553                 logger("Processing mails");
1554
1555                 /// @TODO Rewrite this to one statement
1556                 $msg = array();
1557                 $msg["uid"] = $importer["importer_uid"];
1558                 $msg["from-name"] = $xpath->query("dfrn:sender/dfrn:name/text()", $mail)->item(0)->nodeValue;
1559                 $msg["from-url"] = $xpath->query("dfrn:sender/dfrn:uri/text()", $mail)->item(0)->nodeValue;
1560                 $msg["from-photo"] = $xpath->query("dfrn:sender/dfrn:avatar/text()", $mail)->item(0)->nodeValue;
1561                 $msg["contact-id"] = $importer["id"];
1562                 $msg["uri"] = $xpath->query("dfrn:id/text()", $mail)->item(0)->nodeValue;
1563                 $msg["parent-uri"] = $xpath->query("dfrn:in-reply-to/text()", $mail)->item(0)->nodeValue;
1564                 $msg["created"] = $xpath->query("dfrn:sentdate/text()", $mail)->item(0)->nodeValue;
1565                 $msg["title"] = $xpath->query("dfrn:subject/text()", $mail)->item(0)->nodeValue;
1566                 $msg["body"] = $xpath->query("dfrn:content/text()", $mail)->item(0)->nodeValue;
1567                 $msg["seen"] = 0;
1568                 $msg["replied"] = 0;
1569
1570                 dbm::esc_array($msg, true);
1571
1572                 $r = dbq("INSERT INTO `mail` (`".implode("`, `", array_keys($msg))."`) VALUES (".implode(", ", array_values($msg)).")");
1573
1574                 // send notifications.
1575                 /// @TODO Arange this mess
1576                 $notif_params = array(
1577                         "type" => NOTIFY_MAIL,
1578                         "notify_flags" => $importer["notify-flags"],
1579                         "language" => $importer["language"],
1580                         "to_name" => $importer["username"],
1581                         "to_email" => $importer["email"],
1582                         "uid" => $importer["importer_uid"],
1583                         "item" => $msg,
1584                         "source_name" => $msg["from-name"],
1585                         "source_link" => $importer["url"],
1586                         "source_photo" => $importer["thumb"],
1587                         "verb" => ACTIVITY_POST,
1588                         "otype" => "mail"
1589                 );
1590
1591                 notification($notif_params);
1592
1593                 logger("Mail is processed, notification was sent.");
1594         }
1595
1596         /**
1597          * @brief Processes the suggestion elements
1598          *
1599          * @param object $xpath XPath object
1600          * @param object $suggestion suggestion elements
1601          * @param array $importer Record of the importer user mixed with contact of the content
1602          * @todo Find good type-hints for all parameter
1603          */
1604         private static function process_suggestion($xpath, $suggestion, $importer) {
1605                 $a = get_app();
1606
1607                 logger("Processing suggestions");
1608
1609                 /// @TODO Rewrite this to one statement
1610                 $suggest = array();
1611                 $suggest["uid"] = $importer["importer_uid"];
1612                 $suggest["cid"] = $importer["id"];
1613                 $suggest["url"] = $xpath->query("dfrn:url/text()", $suggestion)->item(0)->nodeValue;
1614                 $suggest["name"] = $xpath->query("dfrn:name/text()", $suggestion)->item(0)->nodeValue;
1615                 $suggest["photo"] = $xpath->query("dfrn:photo/text()", $suggestion)->item(0)->nodeValue;
1616                 $suggest["request"] = $xpath->query("dfrn:request/text()", $suggestion)->item(0)->nodeValue;
1617                 $suggest["body"] = $xpath->query("dfrn:note/text()", $suggestion)->item(0)->nodeValue;
1618
1619                 // Does our member already have a friend matching this description?
1620
1621                 $r = q("SELECT `id` FROM `contact` WHERE `name` = '%s' AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
1622                         dbesc($suggest["name"]),
1623                         dbesc(normalise_link($suggest["url"])),
1624                         intval($suggest["uid"])
1625                 );
1626
1627                 /*
1628                  * The valid result means the friend we're about to send a friend
1629                  * suggestion already has them in their contact, which means no further
1630                  * action is required.
1631                  *
1632                  * @see https://github.com/friendica/friendica/pull/3254#discussion_r107315246
1633                  */
1634                 if (dbm::is_result($r)) {
1635                         return false;
1636                 }
1637
1638                 // Do we already have an fcontact record for this person?
1639
1640                 $fid = 0;
1641                 $r = q("SELECT `id` FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1642                         dbesc($suggest["url"]),
1643                         dbesc($suggest["name"]),
1644                         dbesc($suggest["request"])
1645                 );
1646                 if (dbm::is_result($r)) {
1647                         $fid = $r[0]["id"];
1648
1649                         // OK, we do. Do we already have an introduction for this person ?
1650                         $r = q("SELECT `id` FROM `intro` WHERE `uid` = %d AND `fid` = %d LIMIT 1",
1651                                 intval($suggest["uid"]),
1652                                 intval($fid)
1653                         );
1654
1655                         /*
1656                          * The valid result means the friend we're about to send a friend
1657                          * suggestion already has them in their contact, which means no further
1658                          * action is required.
1659                          *
1660                          * @see https://github.com/friendica/friendica/pull/3254#discussion_r107315246
1661                          */
1662                         if (dbm::is_result($r)) {
1663                                 return false;
1664                         }
1665                 }
1666                 if (!$fid) {
1667                         $r = q("INSERT INTO `fcontact` (`name`,`url`,`photo`,`request`) VALUES ('%s', '%s', '%s', '%s')",
1668                                 dbesc($suggest["name"]),
1669                                 dbesc($suggest["url"]),
1670                                 dbesc($suggest["photo"]),
1671                                 dbesc($suggest["request"])
1672                         );
1673                 }
1674                 $r = q("SELECT `id` FROM `fcontact` WHERE `url` = '%s' AND `name` = '%s' AND `request` = '%s' LIMIT 1",
1675                         dbesc($suggest["url"]),
1676                         dbesc($suggest["name"]),
1677                         dbesc($suggest["request"])
1678                 );
1679
1680                 /*
1681                  * If no record in fcontact is found, below INSERT statement will not
1682                  * link an introduction to it.
1683                  */
1684                 if (!dbm::is_result($r)) {
1685                         // database record did not get created. Quietly give up.
1686                         killme();
1687                 }
1688
1689                 $fid = $r[0]["id"];
1690
1691                 $hash = random_string();
1692
1693                 $r = q("INSERT INTO `intro` (`uid`, `fid`, `contact-id`, `note`, `hash`, `datetime`, `blocked`)
1694                         VALUES(%d, %d, %d, '%s', '%s', '%s', %d)",
1695                         intval($suggest["uid"]),
1696                         intval($fid),
1697                         intval($suggest["cid"]),
1698                         dbesc($suggest["body"]),
1699                         dbesc($hash),
1700                         dbesc(datetime_convert()),
1701                         intval(0)
1702                 );
1703
1704                 notification(array(
1705                         "type"         => NOTIFY_SUGGEST,
1706                         "notify_flags" => $importer["notify-flags"],
1707                         "language"     => $importer["language"],
1708                         "to_name"      => $importer["username"],
1709                         "to_email"     => $importer["email"],
1710                         "uid"          => $importer["importer_uid"],
1711                         "item"         => $suggest,
1712                         "link"         => App::get_baseurl()."/notifications/intros",
1713                         "source_name"  => $importer["name"],
1714                         "source_link"  => $importer["url"],
1715                         "source_photo" => $importer["photo"],
1716                         "verb"         => ACTIVITY_REQ_FRIEND,
1717                         "otype"        => "intro"
1718                 ));
1719
1720                 return true;
1721
1722         }
1723
1724         /**
1725          * @brief Processes the relocation elements
1726          *
1727          * @param object $xpath XPath object
1728          * @param object $relocation relocation elements
1729          * @param array $importer Record of the importer user mixed with contact of the content
1730          * @todo Find good type-hints for all parameter
1731          */
1732         private static function process_relocation($xpath, $relocation, $importer) {
1733
1734                 logger("Processing relocations");
1735
1736                 /// @TODO Rewrite this to one statement
1737                 $relocate = array();
1738                 $relocate["uid"] = $importer["importer_uid"];
1739                 $relocate["cid"] = $importer["id"];
1740                 $relocate["url"] = $xpath->query("dfrn:url/text()", $relocation)->item(0)->nodeValue;
1741                 $relocate["addr"] = $xpath->query("dfrn:addr/text()", $relocation)->item(0)->nodeValue;
1742                 $relocate["name"] = $xpath->query("dfrn:name/text()", $relocation)->item(0)->nodeValue;
1743                 $relocate["avatar"] = $xpath->query("dfrn:avatar/text()", $relocation)->item(0)->nodeValue;
1744                 $relocate["photo"] = $xpath->query("dfrn:photo/text()", $relocation)->item(0)->nodeValue;
1745                 $relocate["thumb"] = $xpath->query("dfrn:thumb/text()", $relocation)->item(0)->nodeValue;
1746                 $relocate["micro"] = $xpath->query("dfrn:micro/text()", $relocation)->item(0)->nodeValue;
1747                 $relocate["request"] = $xpath->query("dfrn:request/text()", $relocation)->item(0)->nodeValue;
1748                 $relocate["confirm"] = $xpath->query("dfrn:confirm/text()", $relocation)->item(0)->nodeValue;
1749                 $relocate["notify"] = $xpath->query("dfrn:notify/text()", $relocation)->item(0)->nodeValue;
1750                 $relocate["poll"] = $xpath->query("dfrn:poll/text()", $relocation)->item(0)->nodeValue;
1751                 $relocate["sitepubkey"] = $xpath->query("dfrn:sitepubkey/text()", $relocation)->item(0)->nodeValue;
1752
1753                 if (($relocate["avatar"] == "") AND ($relocate["photo"] != "")) {
1754                         $relocate["avatar"] = $relocate["photo"];
1755                 }
1756
1757                 if ($relocate["addr"] == "") {
1758                         $relocate["addr"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$3@$2", $relocate["url"]);
1759                 }
1760
1761                 // update contact
1762                 $r = q("SELECT `photo`, `url` FROM `contact` WHERE `id` = %d AND `uid` = %d;",
1763                         intval($importer["id"]),
1764                         intval($importer["importer_uid"]));
1765
1766                 if (!dbm::is_result($r)) {
1767                         logger("Query failed to execute, no result returned in " . __FUNCTION__);
1768                         return false;
1769                 }
1770
1771                 $old = $r[0];
1772
1773                 // Update the gcontact entry
1774                 $relocate["server_url"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $relocate["url"]);
1775
1776                 $x = q("UPDATE `gcontact` SET
1777                                         `name` = '%s',
1778                                         `photo` = '%s',
1779                                         `url` = '%s',
1780                                         `nurl` = '%s',
1781                                         `addr` = '%s',
1782                                         `connect` = '%s',
1783                                         `notify` = '%s',
1784                                         `server_url` = '%s'
1785                         WHERE `nurl` = '%s';",
1786                                         dbesc($relocate["name"]),
1787                                         dbesc($relocate["avatar"]),
1788                                         dbesc($relocate["url"]),
1789                                         dbesc(normalise_link($relocate["url"])),
1790                                         dbesc($relocate["addr"]),
1791                                         dbesc($relocate["addr"]),
1792                                         dbesc($relocate["notify"]),
1793                                         dbesc($relocate["server_url"]),
1794                                         dbesc(normalise_link($old["url"])));
1795
1796                 // Update the contact table. We try to find every entry.
1797                 $x = q("UPDATE `contact` SET
1798                                         `name` = '%s',
1799                                         `avatar` = '%s',
1800                                         `url` = '%s',
1801                                         `nurl` = '%s',
1802                                         `addr` = '%s',
1803                                         `request` = '%s',
1804                                         `confirm` = '%s',
1805                                         `notify` = '%s',
1806                                         `poll` = '%s',
1807                                         `site-pubkey` = '%s'
1808                         WHERE (`id` = %d AND `uid` = %d) OR (`nurl` = '%s');",
1809                                         dbesc($relocate["name"]),
1810                                         dbesc($relocate["avatar"]),
1811                                         dbesc($relocate["url"]),
1812                                         dbesc(normalise_link($relocate["url"])),
1813                                         dbesc($relocate["addr"]),
1814                                         dbesc($relocate["request"]),
1815                                         dbesc($relocate["confirm"]),
1816                                         dbesc($relocate["notify"]),
1817                                         dbesc($relocate["poll"]),
1818                                         dbesc($relocate["sitepubkey"]),
1819                                         intval($importer["id"]),
1820                                         intval($importer["importer_uid"]),
1821                                         dbesc(normalise_link($old["url"])));
1822
1823                 update_contact_avatar($relocate["avatar"], $importer["importer_uid"], $importer["id"], true);
1824
1825                 if ($x === false) {
1826                         return false;
1827                 }
1828
1829                 // update items
1830                 /// @todo This is an extreme performance killer
1831                 $fields = array(
1832                         'owner-link' => array($old["url"], $relocate["url"]),
1833                         'author-link' => array($old["url"], $relocate["url"]),
1834                         //'owner-avatar' => array($old["photo"], $relocate["photo"]),
1835                         //'author-avatar' => array($old["photo"], $relocate["photo"]),
1836                 );
1837                 foreach ($fields as $n=>$f) {
1838                         $r = q("SELECT `id` FROM `item` WHERE `%s` = '%s' AND `uid` = %d LIMIT 1",
1839                                         $n, dbesc($f[0]),
1840                                         intval($importer["importer_uid"]));
1841
1842                         if (dbm::is_result($r)) {
1843                                 $x = q("UPDATE `item` SET `%s` = '%s' WHERE `%s` = '%s' AND `uid` = %d",
1844                                                 $n, dbesc($f[1]),
1845                                                 $n, dbesc($f[0]),
1846                                                 intval($importer["importer_uid"]));
1847
1848                                         if ($x === false) {
1849                                                 return false;
1850                                         }
1851                         }
1852                 }
1853
1854                 /// @TODO
1855                 /// merge with current record, current contents have priority
1856                 /// update record, set url-updated
1857                 /// update profile photos
1858                 /// schedule a scan?
1859                 return true;
1860         }
1861
1862         /**
1863          * @brief Updates an item
1864          *
1865          * @param array $current the current item record
1866          * @param array $item the new item record
1867          * @param array $importer Record of the importer user mixed with contact of the content
1868          * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
1869          * @todo set proper type-hints (array?)
1870          */
1871         private static function update_content($current, $item, $importer, $entrytype) {
1872                 $changed = false;
1873
1874                 if (edited_timestamp_is_newer($current, $item)) {
1875
1876                         // do not accept (ignore) an earlier edit than one we currently have.
1877                         if (datetime_convert("UTC","UTC",$item["edited"]) < $current["edited"]) {
1878                                 return false;
1879                         }
1880
1881                         $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `edited` = '%s', `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
1882                                 dbesc($item["title"]),
1883                                 dbesc($item["body"]),
1884                                 dbesc($item["tag"]),
1885                                 dbesc(datetime_convert("UTC","UTC",$item["edited"])),
1886                                 dbesc(datetime_convert()),
1887                                 dbesc($item["uri"]),
1888                                 intval($importer["importer_uid"])
1889                         );
1890                         create_tags_from_itemuri($item["uri"], $importer["importer_uid"]);
1891                         update_thread_uri($item["uri"], $importer["importer_uid"]);
1892
1893                         $changed = true;
1894
1895                         if ($entrytype == DFRN_REPLY_RC) {
1896                                 proc_run(PRIORITY_HIGH, "include/notifier.php","comment-import", $current["id"]);
1897                         }
1898                 }
1899
1900                 // update last-child if it changes
1901                 if ($item["last-child"] AND ($item["last-child"] != $current["last-child"])) {
1902                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
1903                                 dbesc(datetime_convert()),
1904                                 dbesc($item["parent-uri"]),
1905                                 intval($importer["importer_uid"])
1906                         );
1907                         $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d",
1908                                 intval($item["last-child"]),
1909                                 dbesc(datetime_convert()),
1910                                 dbesc($item["uri"]),
1911                                 intval($importer["importer_uid"])
1912                         );
1913                 }
1914                 return $changed;
1915         }
1916
1917         /**
1918          * @brief Detects the entry type of the item
1919          *
1920          * @param array $importer Record of the importer user mixed with contact of the content
1921          * @param array $item the new item record
1922          *
1923          * @return int Is it a toplevel entry, a comment or a relayed comment?
1924          * @todo set proper type-hints (array?)
1925          */
1926         private static function get_entry_type($importer, $item) {
1927                 if ($item["parent-uri"] != $item["uri"]) {
1928                         $community = false;
1929
1930                         if ($importer["page-flags"] == PAGE_COMMUNITY || $importer["page-flags"] == PAGE_PRVGROUP) {
1931                                 $sql_extra = "";
1932                                 $community = true;
1933                                 logger("possible community action");
1934                         } else {
1935                                 $sql_extra = " AND `contact`.`self` AND `item`.`wall` ";
1936                         }
1937
1938                         // was the top-level post for this action written by somebody on this site?
1939                         // Specifically, the recipient?
1940
1941                         $is_a_remote_action = false;
1942
1943                         $r = q("SELECT `item`.`parent-uri` FROM `item`
1944                                 WHERE `item`.`uri` = '%s'
1945                                 LIMIT 1",
1946                                 dbesc($item["parent-uri"])
1947                         );
1948                         if (dbm::is_result($r)) {
1949                                 $r = q("SELECT `item`.`forum_mode`, `item`.`wall` FROM `item`
1950                                         INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
1951                                         WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' OR `item`.`thr-parent` = '%s')
1952                                         AND `item`.`uid` = %d
1953                                         $sql_extra
1954                                         LIMIT 1",
1955                                         dbesc($r[0]["parent-uri"]),
1956                                         dbesc($r[0]["parent-uri"]),
1957                                         dbesc($r[0]["parent-uri"]),
1958                                         intval($importer["importer_uid"])
1959                                 );
1960                                 if (dbm::is_result($r)) {
1961                                         $is_a_remote_action = true;
1962                                 }
1963                         }
1964
1965                         /*
1966                          * Does this have the characteristics of a community or private group action?
1967                          * If it's an action to a wall post on a community/prvgroup page it's a
1968                          * valid community action. Also forum_mode makes it valid for sure.
1969                          * If neither, it's not.
1970                          */
1971
1972                         /// @TODO Maybe merge these if() blocks into one?
1973                         if ($is_a_remote_action && $community && (!$r[0]["forum_mode"]) && (!$r[0]["wall"])) {
1974                                 $is_a_remote_action = false;
1975                                 logger("not a community action");
1976                         }
1977
1978                         if ($is_a_remote_action) {
1979                                 return DFRN_REPLY_RC;
1980                         } else {
1981                                 return DFRN_REPLY;
1982                         }
1983                 } else {
1984                         return DFRN_TOP_LEVEL;
1985                 }
1986
1987         }
1988
1989         /**
1990          * @brief Send a "poke"
1991          *
1992          * @param array $item the new item record
1993          * @param array $importer Record of the importer user mixed with contact of the content
1994          * @param int $posted_id The record number of item record that was just posted
1995          * @todo set proper type-hints (array?)
1996          */
1997         private static function do_poke($item, $importer, $posted_id) {
1998                 $verb = urldecode(substr($item["verb"],strpos($item["verb"], "#")+1));
1999                 if (!$verb) {
2000                         return;
2001                 }
2002                 $xo = parse_xml_string($item["object"],false);
2003
2004                 if (($xo->type == ACTIVITY_OBJ_PERSON) && ($xo->id)) {
2005
2006                         // somebody was poked/prodded. Was it me?
2007                         foreach ($xo->link as $l) {
2008                                 $atts = $l->attributes();
2009                                 switch ($atts["rel"]) {
2010                                         case "alternate":
2011                                                 $Blink = $atts["href"];
2012                                                 break;
2013                                         default:
2014                                                 break;
2015                                 }
2016                         }
2017
2018                         if ($Blink && link_compare($Blink, App::get_baseurl() . "/profile/" . $importer["nickname"])) {
2019
2020                                 // send a notification
2021                                 notification(array(
2022                                         "type"         => NOTIFY_POKE,
2023                                         "notify_flags" => $importer["notify-flags"],
2024                                         "language"     => $importer["language"],
2025                                         "to_name"      => $importer["username"],
2026                                         "to_email"     => $importer["email"],
2027                                         "uid"          => $importer["importer_uid"],
2028                                         "item"         => $item,
2029                                         "link"         => App::get_baseurl()."/display/".urlencode(get_item_guid($posted_id)),
2030                                         "source_name"  => stripslashes($item["author-name"]),
2031                                         "source_link"  => $item["author-link"],
2032                                         "source_photo" => ((link_compare($item["author-link"],$importer["url"]))
2033                                                 ? $importer["thumb"] : $item["author-avatar"]),
2034                                         "verb"         => $item["verb"],
2035                                         "otype"        => "person",
2036                                         "activity"     => $verb,
2037                                         "parent"       => $item["parent"]
2038                                 ));
2039                         }
2040                 }
2041         }
2042
2043         /**
2044          * @brief Processes several actions, depending on the verb
2045          *
2046          * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
2047          * @param array $importer Record of the importer user mixed with contact of the content
2048          * @param array $item the new item record
2049          * @param bool $is_like Is the verb a "like"?
2050          *
2051          * @return bool Should the processing of the entries be continued?
2052          * @todo set proper type-hints (array?)
2053          */
2054         private static function process_verbs($entrytype, $importer, &$item, &$is_like) {
2055
2056                 logger("Process verb ".$item["verb"]." and object-type ".$item["object-type"]." for entrytype ".$entrytype, LOGGER_DEBUG);
2057
2058                 if (($entrytype == DFRN_TOP_LEVEL)) {
2059                         // The filling of the the "contact" variable is done for legcy reasons
2060                         // The functions below are partly used by ostatus.php as well - where we have this variable
2061                         $r = q("SELECT * FROM `contact` WHERE `id` = %d", intval($importer["id"]));
2062                         $contact = $r[0];
2063                         $nickname = $contact["nick"];
2064
2065                         // Big question: Do we need these functions? They were part of the "consume_feed" function.
2066                         // This function once was responsible for DFRN and OStatus.
2067                         if (activity_match($item["verb"], ACTIVITY_FOLLOW)) {
2068                                 logger("New follower");
2069                                 new_follower($importer, $contact, $item, $nickname);
2070                                 return false;
2071                         }
2072                         if (activity_match($item["verb"], ACTIVITY_UNFOLLOW))  {
2073                                 logger("Lost follower");
2074                                 lose_follower($importer, $contact, $item);
2075                                 return false;
2076                         }
2077                         if (activity_match($item["verb"], ACTIVITY_REQ_FRIEND)) {
2078                                 logger("New friend request");
2079                                 new_follower($importer, $contact, $item, $nickname, true);
2080                                 return false;
2081                         }
2082                         if (activity_match($item["verb"], ACTIVITY_UNFRIEND))  {
2083                                 logger("Lost sharer");
2084                                 lose_sharer($importer, $contact, $item);
2085                                 return false;
2086                         }
2087                 } else {
2088                         if (($item["verb"] == ACTIVITY_LIKE)
2089                                 || ($item["verb"] == ACTIVITY_DISLIKE)
2090                                 || ($item["verb"] == ACTIVITY_ATTEND)
2091                                 || ($item["verb"] == ACTIVITY_ATTENDNO)
2092                                 || ($item["verb"] == ACTIVITY_ATTENDMAYBE)) {
2093                                 $is_like = true;
2094                                 $item["type"] = "activity";
2095                                 $item["gravity"] = GRAVITY_LIKE;
2096                                 // only one like or dislike per person
2097                                 // splitted into two queries for performance issues
2098                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `author-link` = '%s' AND `verb` = '%s' AND `parent-uri` = '%s' AND NOT `deleted` LIMIT 1",
2099                                         intval($item["uid"]),
2100                                         dbesc($item["author-link"]),
2101                                         dbesc($item["verb"]),
2102                                         dbesc($item["parent-uri"])
2103                                 );
2104                                 if (dbm::is_result($r)) {
2105                                         return false;
2106                                 }
2107
2108                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `author-link` = '%s' AND `verb` = '%s' AND `thr-parent` = '%s' AND NOT `deleted` LIMIT 1",
2109                                         intval($item["uid"]),
2110                                         dbesc($item["author-link"]),
2111                                         dbesc($item["verb"]),
2112                                         dbesc($item["parent-uri"])
2113                                 );
2114                                 if (dbm::is_result($r)) {
2115                                         return false;
2116                                 }
2117                         } else {
2118                                 $is_like = false;
2119                         }
2120
2121                         if (($item["verb"] == ACTIVITY_TAG) && ($item["object-type"] == ACTIVITY_OBJ_TAGTERM)) {
2122
2123                                 $xo = parse_xml_string($item["object"],false);
2124                                 $xt = parse_xml_string($item["target"],false);
2125
2126                                 if ($xt->type == ACTIVITY_OBJ_NOTE) {
2127                                         $r = q("SELECT `id`, `tag` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2128                                                 dbesc($xt->id),
2129                                                 intval($importer["importer_uid"])
2130                                         );
2131
2132                                         if (!dbm::is_result($r)) {
2133                                                 logger("Query failed to execute, no result returned in " . __FUNCTION__);
2134                                                 return false;
2135                                         }
2136
2137                                         // extract tag, if not duplicate, add to parent item
2138                                         if ($xo->content) {
2139                                                 if (!(stristr($r[0]["tag"],trim($xo->content)))) {
2140                                                         q("UPDATE `item` SET `tag` = '%s' WHERE `id` = %d",
2141                                                                 dbesc($r[0]["tag"] . (strlen($r[0]["tag"]) ? ',' : '') . '#[url=' . $xo->id . ']'. $xo->content . '[/url]'),
2142                                                                 intval($r[0]["id"])
2143                                                         );
2144                                                         create_tags_from_item($r[0]["id"]);
2145                                                 }
2146                                         }
2147                                 }
2148                         }
2149                 }
2150                 return true;
2151         }
2152
2153         /**
2154          * @brief Processes the link elements
2155          *
2156          * @param object $links link elements
2157          * @param array $item the item record
2158          * @todo set proper type-hints
2159          */
2160         private static function parse_links($links, &$item) {
2161                 $rel = "";
2162                 $href = "";
2163                 $type = "";
2164                 $length = "0";
2165                 $title = "";
2166                 foreach ($links AS $link) {
2167                         foreach ($link->attributes AS $attributes) {
2168                                 /// @TODO Rewrite these repeated (same) if() statements to a switch()
2169                                 if ($attributes->name == "href") {
2170                                         $href = $attributes->textContent;
2171                                 }
2172                                 if ($attributes->name == "rel") {
2173                                         $rel = $attributes->textContent;
2174                                 }
2175                                 if ($attributes->name == "type") {
2176                                         $type = $attributes->textContent;
2177                                 }
2178                                 if ($attributes->name == "length") {
2179                                         $length = $attributes->textContent;
2180                                 }
2181                                 if ($attributes->name == "title") {
2182                                         $title = $attributes->textContent;
2183                                 }
2184                         }
2185                         if (($rel != "") AND ($href != "")) {
2186                                 switch ($rel) {
2187                                         case "alternate":
2188                                                 $item["plink"] = $href;
2189                                                 break;
2190                                         case "enclosure":
2191                                                 $enclosure = $href;
2192                                                 if (strlen($item["attach"])) {
2193                                                         $item["attach"] .= ",";
2194                                                 }
2195
2196                                                 $item["attach"] .= '[attach]href="' . $href . '" length="' . $length . '" type="' . $type . '" title="' . $title . '"[/attach]';
2197                                                 break;
2198                                 }
2199                         }
2200                 }
2201         }
2202
2203         /**
2204          * @brief Processes the entry elements which contain the items and comments
2205          *
2206          * @param array $header Array of the header elements that always stay the same
2207          * @param object $xpath XPath object
2208          * @param object $entry entry elements
2209          * @param array $importer Record of the importer user mixed with contact of the content
2210          * @todo Add type-hints
2211          */
2212         private static function process_entry($header, $xpath, $entry, $importer) {
2213
2214                 logger("Processing entries");
2215
2216                 $item = $header;
2217
2218                 // Get the uri
2219                 $item["uri"] = $xpath->query("atom:id/text()", $entry)->item(0)->nodeValue;
2220
2221                 $item["edited"] = $xpath->query("atom:updated/text()", $entry)->item(0)->nodeValue;
2222
2223                 $current = q("SELECT `id`, `uid`, `last-child`, `edited`, `body` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2224                         dbesc($item["uri"]),
2225                         intval($importer["importer_uid"])
2226                 );
2227
2228                 // Is there an existing item?
2229                 if (dbm::is_result($current) AND edited_timestamp_is_newer($current[0], $item) AND
2230                         (datetime_convert("UTC","UTC",$item["edited"]) < $current[0]["edited"])) {
2231                         logger("Item ".$item["uri"]." already existed.", LOGGER_DEBUG);
2232                         return;
2233                 }
2234
2235                 // Fetch the owner
2236                 $owner = self::fetchauthor($xpath, $entry, $importer, "dfrn:owner", true);
2237
2238                 $item["owner-name"] = $owner["name"];
2239                 $item["owner-link"] = $owner["link"];
2240                 $item["owner-avatar"] = $owner["avatar"];
2241
2242                 // fetch the author
2243                 $author = self::fetchauthor($xpath, $entry, $importer, "atom:author", true);
2244
2245                 $item["author-name"] = $author["name"];
2246                 $item["author-link"] = $author["link"];
2247                 $item["author-avatar"] = $author["avatar"];
2248
2249                 $item["title"] = $xpath->query("atom:title/text()", $entry)->item(0)->nodeValue;
2250
2251                 $item["created"] = $xpath->query("atom:published/text()", $entry)->item(0)->nodeValue;
2252
2253                 $item["body"] = $xpath->query("dfrn:env/text()", $entry)->item(0)->nodeValue;
2254                 $item["body"] = str_replace(array(' ',"\t","\r","\n"), array('','','',''),$item["body"]);
2255                 // make sure nobody is trying to sneak some html tags by us
2256                 $item["body"] = notags(base64url_decode($item["body"]));
2257
2258                 $item["body"] = limit_body_size($item["body"]);
2259
2260                 /// @todo Do we really need this check for HTML elements? (It was copied from the old function)
2261                 if ((strpos($item['body'],'<') !== false) && (strpos($item['body'],'>') !== false)) {
2262
2263                         $item['body'] = reltoabs($item['body'],$base_url);
2264
2265                         $item['body'] = html2bb_video($item['body']);
2266
2267                         $item['body'] = oembed_html2bbcode($item['body']);
2268
2269                         $config = HTMLPurifier_Config::createDefault();
2270                         $config->set('Cache.DefinitionImpl', null);
2271
2272                         // we shouldn't need a whitelist, because the bbcode converter
2273                         // will strip out any unsupported tags.
2274
2275                         $purifier = new HTMLPurifier($config);
2276                         $item['body'] = $purifier->purify($item['body']);
2277
2278                         $item['body'] = @html2bbcode($item['body']);
2279                 }
2280
2281                 /// @todo We should check for a repeated post and if we know the repeated author.
2282
2283                 // We don't need the content element since "dfrn:env" is always present
2284                 //$item["body"] = $xpath->query("atom:content/text()", $entry)->item(0)->nodeValue;
2285
2286                 $item["last-child"] = $xpath->query("dfrn:comment-allow/text()", $entry)->item(0)->nodeValue;
2287                 $item["location"] = $xpath->query("dfrn:location/text()", $entry)->item(0)->nodeValue;
2288
2289                 $georsspoint = $xpath->query("georss:point", $entry);
2290                 if ($georsspoint) {
2291                         $item["coord"] = $georsspoint->item(0)->nodeValue;
2292                 }
2293
2294                 $item["private"] = $xpath->query("dfrn:private/text()", $entry)->item(0)->nodeValue;
2295
2296                 $item["extid"] = $xpath->query("dfrn:extid/text()", $entry)->item(0)->nodeValue;
2297
2298                 if ($xpath->query("dfrn:bookmark/text()", $entry)->item(0)->nodeValue == "true") {
2299                         $item["bookmark"] = true;
2300                 }
2301
2302                 $notice_info = $xpath->query("statusnet:notice_info", $entry);
2303                 if ($notice_info AND ($notice_info->length > 0)) {
2304                         foreach ($notice_info->item(0)->attributes AS $attributes) {
2305                                 if ($attributes->name == "source") {
2306                                         $item["app"] = strip_tags($attributes->textContent);
2307                                 }
2308                         }
2309                 }
2310
2311                 $item["guid"] = $xpath->query("dfrn:diaspora_guid/text()", $entry)->item(0)->nodeValue;
2312
2313                 // We store the data from "dfrn:diaspora_signature" in a different table, this is done in "item_store"
2314                 $dsprsig = unxmlify($xpath->query("dfrn:diaspora_signature/text()", $entry)->item(0)->nodeValue);
2315                 if ($dsprsig != "") {
2316                         $item["dsprsig"] = $dsprsig;
2317                 }
2318
2319                 $item["verb"] = $xpath->query("activity:verb/text()", $entry)->item(0)->nodeValue;
2320
2321                 if ($xpath->query("activity:object-type/text()", $entry)->item(0)->nodeValue != "") {
2322                         $item["object-type"] = $xpath->query("activity:object-type/text()", $entry)->item(0)->nodeValue;
2323                 }
2324
2325                 $object = $xpath->query("activity:object", $entry)->item(0);
2326                 $item["object"] = self::transform_activity($xpath, $object, "object");
2327
2328                 if (trim($item["object"]) != "") {
2329                         $r = parse_xml_string($item["object"], false);
2330                         if (isset($r->type)) {
2331                                 $item["object-type"] = $r->type;
2332                         }
2333                 }
2334
2335                 $target = $xpath->query("activity:target", $entry)->item(0);
2336                 $item["target"] = self::transform_activity($xpath, $target, "target");
2337
2338                 $categories = $xpath->query("atom:category", $entry);
2339                 if ($categories) {
2340                         foreach ($categories AS $category) {
2341                                 $term = "";
2342                                 $scheme = "";
2343                                 foreach ($category->attributes AS $attributes) {
2344                                         if ($attributes->name == "term") {
2345                                                 $term = $attributes->textContent;
2346                                         }
2347
2348                                         if ($attributes->name == "scheme") {
2349                                                 $scheme = $attributes->textContent;
2350                                         }
2351                                 }
2352
2353                                 if (($term != "") AND ($scheme != "")) {
2354                                         $parts = explode(":", $scheme);
2355                                         if ((count($parts) >= 4) AND (array_shift($parts) == "X-DFRN")) {
2356                                                 $termhash = array_shift($parts);
2357                                                 $termurl = implode(":", $parts);
2358
2359                                                 if (strlen($item["tag"])) {
2360                                                         $item["tag"] .= ",";
2361                                                 }
2362
2363                                                 $item["tag"] .= $termhash . "[url=" . $termurl . "]" . $term . "[/url]";
2364                                         }
2365                                 }
2366                         }
2367                 }
2368
2369                 $enclosure = "";
2370
2371                 $links = $xpath->query("atom:link", $entry);
2372                 if ($links) {
2373                         self::parse_links($links, $item);
2374                 }
2375
2376                 // Is it a reply or a top level posting?
2377                 $item["parent-uri"] = $item["uri"];
2378
2379                 $inreplyto = $xpath->query("thr:in-reply-to", $entry);
2380                 if (is_object($inreplyto->item(0))) {
2381                         foreach ($inreplyto->item(0)->attributes AS $attributes) {
2382                                 if ($attributes->name == "ref") {
2383                                         $item["parent-uri"] = $attributes->textContent;
2384                                 }
2385                         }
2386                 }
2387
2388                 // Get the type of the item (Top level post, reply or remote reply)
2389                 $entrytype = self::get_entry_type($importer, $item);
2390
2391                 // Now assign the rest of the values that depend on the type of the message
2392                 if (in_array($entrytype, array(DFRN_REPLY, DFRN_REPLY_RC))) {
2393                         if (!isset($item["object-type"])) {
2394                                 $item["object-type"] = ACTIVITY_OBJ_COMMENT;
2395                         }
2396
2397                         if ($item["contact-id"] != $owner["contact-id"]) {
2398                                 $item["contact-id"] = $owner["contact-id"];
2399                         }
2400
2401                         if (($item["network"] != $owner["network"]) AND ($owner["network"] != "")) {
2402                                 $item["network"] = $owner["network"];
2403                         }
2404
2405                         if ($item["contact-id"] != $author["contact-id"]) {
2406                                 $item["contact-id"] = $author["contact-id"];
2407                         }
2408
2409                         if (($item["network"] != $author["network"]) AND ($author["network"] != "")) {
2410                                 $item["network"] = $author["network"];
2411                         }
2412
2413                         /// @TODO maybe remove this old-lost code then?
2414                         // This code was taken from the old DFRN code
2415                         // When activated, forums don't work.
2416                         // And: Why should we disallow commenting by followers?
2417                         // the behaviour is now similar to the Diaspora part.
2418                         //if($importer["rel"] == CONTACT_IS_FOLLOWER) {
2419                         //      logger("Contact ".$importer["id"]." is only follower. Quitting", LOGGER_DEBUG);
2420                         //      return;
2421                         //}
2422                 }
2423
2424                 if ($entrytype == DFRN_REPLY_RC) {
2425                         $item["type"] = "remote-comment";
2426                         $item["wall"] = 1;
2427                 } elseif ($entrytype == DFRN_TOP_LEVEL) {
2428                         if (!isset($item["object-type"])) {
2429                                 $item["object-type"] = ACTIVITY_OBJ_NOTE;
2430                         }
2431
2432                         // Is it an event?
2433                         if ($item["object-type"] == ACTIVITY_OBJ_EVENT) {
2434                                 logger("Item ".$item["uri"]." seems to contain an event.", LOGGER_DEBUG);
2435                                 $ev = bbtoevent($item["body"]);
2436                                 if ((x($ev, "desc") || x($ev, "summary")) && x($ev, "start")) {
2437                                         logger("Event in item ".$item["uri"]." was found.", LOGGER_DEBUG);
2438                                         /// @TODO Mixure of "/' ahead ...
2439                                         $ev["cid"] = $importer["id"];
2440                                         $ev["uid"] = $importer["uid"];
2441                                         $ev["uri"] = $item["uri"];
2442                                         $ev["edited"] = $item["edited"];
2443                                         $ev['private'] = $item['private'];
2444                                         $ev["guid"] = $item["guid"];
2445
2446                                         $r = q("SELECT `id` FROM `event` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2447                                                 dbesc($item["uri"]),
2448                                                 intval($importer["uid"])
2449                                         );
2450                                         if (dbm::is_result($r)) {
2451                                                 $ev["id"] = $r[0]["id"];
2452                                         }
2453
2454                                         $event_id = event_store($ev);
2455                                         logger("Event ".$event_id." was stored", LOGGER_DEBUG);
2456                                         return;
2457                                 }
2458                         }
2459                 }
2460
2461                 if (!self::process_verbs($entrytype, $importer, $item, $is_like)) {
2462                         logger("Exiting because 'process_verbs' told us so", LOGGER_DEBUG);
2463                         return;
2464                 }
2465
2466                 // Update content if 'updated' changes
2467                 if (dbm::is_result($current)) {
2468                         if (self::update_content($r[0], $item, $importer, $entrytype)) {
2469                                 logger("Item ".$item["uri"]." was updated.", LOGGER_DEBUG);
2470                         } else {
2471                                 logger("Item ".$item["uri"]." already existed.", LOGGER_DEBUG);
2472                         }
2473                         return;
2474                 }
2475
2476                 if (in_array($entrytype, array(DFRN_REPLY, DFRN_REPLY_RC))) {
2477                         $posted_id = item_store($item);
2478                         $parent = 0;
2479
2480                         if ($posted_id) {
2481
2482                                 logger("Reply from contact ".$item["contact-id"]." was stored with id ".$posted_id, LOGGER_DEBUG);
2483
2484                                 $item["id"] = $posted_id;
2485
2486                                 $r = q("SELECT `parent`, `parent-uri` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
2487                                         intval($posted_id),
2488                                         intval($importer["importer_uid"])
2489                                 );
2490                                 if (dbm::is_result($r)) {
2491                                         $parent = $r[0]["parent"];
2492                                         $parent_uri = $r[0]["parent-uri"];
2493                                 }
2494
2495                                 if (!$is_like) {
2496                                         $r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
2497                                                 dbesc(datetime_convert()),
2498                                                 intval($importer["importer_uid"]),
2499                                                 intval($r[0]["parent"])
2500                                         );
2501
2502                                         $r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d",
2503                                                 dbesc(datetime_convert()),
2504                                                 intval($importer["importer_uid"]),
2505                                                 intval($posted_id)
2506                                         );
2507                                 }
2508
2509                                 if ($posted_id AND $parent AND ($entrytype == DFRN_REPLY_RC)) {
2510                                         logger("Notifying followers about comment ".$posted_id, LOGGER_DEBUG);
2511                                         proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $posted_id);
2512                                 }
2513
2514                                 return true;
2515                         }
2516                 } else { // $entrytype == DFRN_TOP_LEVEL
2517                         if (!link_compare($item["owner-link"],$importer["url"])) {
2518                                 /*
2519                                  * The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2520                                  * but otherwise there's a possible data mixup on the sender's system.
2521                                  * the tgroup delivery code called from item_store will correct it if it's a forum,
2522                                  * but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2523                                  */
2524                                 logger('Correcting item owner.', LOGGER_DEBUG);
2525                                 $item["owner-name"]   = $importer["senderName"];
2526                                 $item["owner-link"]   = $importer["url"];
2527                                 $item["owner-avatar"] = $importer["thumb"];
2528                         }
2529
2530                         if (($importer["rel"] == CONTACT_IS_FOLLOWER) && (!tgroup_check($importer["importer_uid"], $item))) {
2531                                 logger("Contact ".$importer["id"]." is only follower and tgroup check was negative.", LOGGER_DEBUG);
2532                                 return;
2533                         }
2534
2535                         // This is my contact on another system, but it's really me.
2536                         // Turn this into a wall post.
2537                         $notify = item_is_remote_self($importer, $item);
2538
2539                         $posted_id = item_store($item, false, $notify);
2540
2541                         logger("Item was stored with id ".$posted_id, LOGGER_DEBUG);
2542
2543                         if(stristr($item["verb"],ACTIVITY_POKE))
2544                                 self::do_poke($item, $importer, $posted_id);
2545                 }
2546         }
2547
2548         /**
2549          * @brief Deletes items
2550          *
2551          * @param object $xpath XPath object
2552          * @param object $deletion deletion elements
2553          * @param array $importer Record of the importer user mixed with contact of the content
2554          * @todo set proper type-hints
2555          */
2556         private static function process_deletion($xpath, $deletion, $importer) {
2557
2558                 logger("Processing deletions");
2559
2560                 foreach ($deletion->attributes AS $attributes) {
2561                         if ($attributes->name == "ref") {
2562                                 $uri = $attributes->textContent;
2563                         }
2564                         if ($attributes->name == "when") {
2565                                 $when = $attributes->textContent;
2566                         }
2567                 }
2568                 if ($when) {
2569                         $when = datetime_convert("UTC", "UTC", $when, "Y-m-d H:i:s");
2570                 } else {
2571                         $when = datetime_convert("UTC", "UTC", "now", "Y-m-d H:i:s");
2572                 }
2573
2574                 if (!$uri OR !$importer["id"]) {
2575                         return false;
2576                 }
2577
2578                 /// @todo Only select the used fields
2579                 $r = q("SELECT `item`.*, `contact`.`self` FROM `item` INNER JOIN `contact` on `item`.`contact-id` = `contact`.`id`
2580                                 WHERE `uri` = '%s' AND `item`.`uid` = %d AND `contact-id` = %d AND NOT `item`.`file` LIKE '%%[%%' LIMIT 1",
2581                                 dbesc($uri),
2582                                 intval($importer["uid"]),
2583                                 intval($importer["id"])
2584                         );
2585                 if (!dbm::is_result($r)) {
2586                         logger("Item with uri " . $uri . " from contact " . $importer["id"] . " for user " . $importer["uid"] . " wasn't found.", LOGGER_DEBUG);
2587                         return;
2588                 } else {
2589
2590                         $item = $r[0];
2591
2592                         $entrytype = self::get_entry_type($importer, $item);
2593
2594                         if (!$item["deleted"]) {
2595                                 logger('deleting item '.$item["id"].' uri='.$uri, LOGGER_DEBUG);
2596                         } else {
2597                                 return;
2598                         }
2599
2600                         if ($item["object-type"] == ACTIVITY_OBJ_EVENT) {
2601                                 logger("Deleting event ".$item["event-id"], LOGGER_DEBUG);
2602                                 event_delete($item["event-id"]);
2603                         }
2604
2605                         if (($item["verb"] == ACTIVITY_TAG) && ($item["object-type"] == ACTIVITY_OBJ_TAGTERM)) {
2606
2607                                 $xo = parse_xml_string($item["object"],false);
2608                                 $xt = parse_xml_string($item["target"],false);
2609
2610                                 if ($xt->type == ACTIVITY_OBJ_NOTE) {
2611                                         $i = q("SELECT `id`, `contact-id`, `tag` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
2612                                                 dbesc($xt->id),
2613                                                 intval($importer["importer_uid"])
2614                                         );
2615                                         if (dbm::is_result($i)) {
2616
2617                                                 // For tags, the owner cannot remove the tag on the author's copy of the post.
2618
2619                                                 $owner_remove = (($item["contact-id"] == $i[0]["contact-id"]) ? true: false);
2620                                                 $author_remove = (($item["origin"] && $item["self"]) ? true : false);
2621                                                 $author_copy = (($item["origin"]) ? true : false);
2622
2623                                                 if ($owner_remove && $author_copy) {
2624                                                         return;
2625                                                 }
2626                                                 if ($author_remove || $owner_remove) {
2627                                                         $tags = explode(',',$i[0]["tag"]);
2628                                                         $newtags = array();
2629                                                         if (count($tags)) {
2630                                                                 foreach ($tags as $tag) {
2631                                                                         if (trim($tag) !== trim($xo->body)) {
2632                                                                                 $newtags[] = trim($tag);
2633                                                                         }
2634                                                                 }
2635                                                         }
2636                                                         q("UPDATE `item` SET `tag` = '%s' WHERE `id` = %d",
2637                                                                 dbesc(implode(',', $newtags)),
2638                                                                 intval($i[0]["id"])
2639                                                         );
2640                                                         create_tags_from_item($i[0]["id"]);
2641                                                 }
2642                                         }
2643                                 }
2644                         }
2645
2646                         if ($entrytype == DFRN_TOP_LEVEL) {
2647                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2648                                                 `body` = '', `title` = ''
2649                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
2650                                                 dbesc($when),
2651                                                 dbesc(datetime_convert()),
2652                                                 dbesc($uri),
2653                                                 intval($importer["uid"])
2654                                         );
2655                                 create_tags_from_itemuri($uri, $importer["uid"]);
2656                                 create_files_from_itemuri($uri, $importer["uid"]);
2657                                 update_thread_uri($uri, $importer["uid"]);
2658                         } else {
2659                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
2660                                                 `body` = '', `title` = ''
2661                                         WHERE `uri` = '%s' AND `uid` = %d",
2662                                                 dbesc($when),
2663                                                 dbesc(datetime_convert()),
2664                                                 dbesc($uri),
2665                                                 intval($importer["uid"])
2666                                         );
2667                                 create_tags_from_itemuri($uri, $importer["uid"]);
2668                                 create_files_from_itemuri($uri, $importer["uid"]);
2669                                 update_thread_uri($uri, $importer["importer_uid"]);
2670                                 if($item["last-child"]) {
2671                                         // ensure that last-child is set in case the comment that had it just got wiped.
2672                                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2673                                                 dbesc(datetime_convert()),
2674                                                 dbesc($item["parent-uri"]),
2675                                                 intval($item["uid"])
2676                                         );
2677                                         // who is the last child now?
2678                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `moderated` = 0 AND `uid` = %d
2679                                                 ORDER BY `created` DESC LIMIT 1",
2680                                                         dbesc($item["parent-uri"]),
2681                                                         intval($importer["uid"])
2682                                         );
2683                                         if (dbm::is_result($r)) {
2684                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2685                                                         intval($r[0]["id"])
2686                                                 );
2687                                         }
2688                                 }
2689                                 // if this is a relayed delete, propagate it to other recipients
2690
2691                                 if ($entrytype == DFRN_REPLY_RC) {
2692                                         logger("Notifying followers about deletion of post " . $item["id"], LOGGER_DEBUG);
2693                                         proc_run(PRIORITY_HIGH, "include/notifier.php","drop", $item["id"]);
2694                                 }
2695                         }
2696                 }
2697         }
2698
2699         /**
2700          * @brief Imports a DFRN message
2701          *
2702          * @param text $xml The DFRN message
2703          * @param array $importer Record of the importer user mixed with contact of the content
2704          * @param bool $sort_by_date Is used when feeds are polled
2705          * @todo set proper type-hints
2706          */
2707         public static function import($xml,$importer, $sort_by_date = false) {
2708
2709                 if ($xml == "") {
2710                         return;
2711                 }
2712
2713                 if ($importer["readonly"]) {
2714                         // We aren't receiving stuff from this person. But we will quietly ignore them
2715                         // rather than a blatant "go away" message.
2716                         logger('ignoring contact '.$importer["id"]);
2717                         return;
2718                 }
2719
2720                 $doc = new DOMDocument();
2721                 @$doc->loadXML($xml);
2722
2723                 $xpath = new DomXPath($doc);
2724                 $xpath->registerNamespace("atom", NAMESPACE_ATOM1);
2725                 $xpath->registerNamespace("thr", NAMESPACE_THREAD);
2726                 $xpath->registerNamespace("at", NAMESPACE_TOMB);
2727                 $xpath->registerNamespace("media", NAMESPACE_MEDIA);
2728                 $xpath->registerNamespace("dfrn", NAMESPACE_DFRN);
2729                 $xpath->registerNamespace("activity", NAMESPACE_ACTIVITY);
2730                 $xpath->registerNamespace("georss", NAMESPACE_GEORSS);
2731                 $xpath->registerNamespace("poco", NAMESPACE_POCO);
2732                 $xpath->registerNamespace("ostatus", NAMESPACE_OSTATUS);
2733                 $xpath->registerNamespace("statusnet", NAMESPACE_STATUSNET);
2734
2735                 $header = array();
2736                 $header["uid"] = $importer["uid"];
2737                 $header["network"] = NETWORK_DFRN;
2738                 $header["type"] = "remote";
2739                 $header["wall"] = 0;
2740                 $header["origin"] = 0;
2741                 $header["contact-id"] = $importer["id"];
2742
2743                 // Update the contact table if the data has changed
2744
2745                 // The "atom:author" is only present in feeds
2746                 if ($xpath->query("/atom:feed/atom:author")->length > 0) {
2747                         self::fetchauthor($xpath, $doc->firstChild, $importer, "atom:author", false, $xml);
2748                 }
2749
2750                 // Only the "dfrn:owner" in the head section contains all data
2751                 if ($xpath->query("/atom:feed/dfrn:owner")->length > 0) {
2752                         self::fetchauthor($xpath, $doc->firstChild, $importer, "dfrn:owner", false, $xml);
2753                 }
2754
2755                 logger("Import DFRN message for user " . $importer["uid"] . " from contact " . $importer["id"], LOGGER_DEBUG);
2756
2757                 // The account type is new since 3.5.1
2758                 if ($xpath->query("/atom:feed/dfrn:account_type")->length > 0) {
2759                         $accounttype = intval($xpath->evaluate("/atom:feed/dfrn:account_type/text()", $context)->item(0)->nodeValue);
2760
2761                         if ($accounttype != $importer["contact-type"]) {
2762                                 /// @TODO this way is the norm or putting ); at the end of the line?
2763                                 q("UPDATE `contact` SET `contact-type` = %d WHERE `id` = %d",
2764                                         intval($accounttype),
2765                                         intval($importer["id"])
2766                                 );
2767                         }
2768                 }
2769
2770                 // is it a public forum? Private forums aren't supported with this method
2771                 // This is deprecated since 3.5.1
2772                 $forum = intval($xpath->evaluate("/atom:feed/dfrn:community/text()", $context)->item(0)->nodeValue);
2773
2774                 if ($forum != $importer["forum"]) {
2775                         q("UPDATE `contact` SET `forum` = %d WHERE `forum` != %d AND `id` = %d",
2776                                 intval($forum), intval($forum),
2777                                 intval($importer["id"])
2778                         );
2779                 }
2780
2781                 $mails = $xpath->query("/atom:feed/dfrn:mail");
2782                 foreach ($mails AS $mail) {
2783                         self::process_mail($xpath, $mail, $importer);
2784                 }
2785
2786                 $suggestions = $xpath->query("/atom:feed/dfrn:suggest");
2787                 foreach ($suggestions AS $suggestion) {
2788                         self::process_suggestion($xpath, $suggestion, $importer);
2789                 }
2790
2791                 $relocations = $xpath->query("/atom:feed/dfrn:relocate");
2792                 foreach ($relocations AS $relocation) {
2793                         self::process_relocation($xpath, $relocation, $importer);
2794                 }
2795
2796                 $deletions = $xpath->query("/atom:feed/at:deleted-entry");
2797                 foreach ($deletions AS $deletion) {
2798                         self::process_deletion($xpath, $deletion, $importer);
2799                 }
2800
2801                 if (!$sort_by_date) {
2802                         $entries = $xpath->query("/atom:feed/atom:entry");
2803                         foreach ($entries AS $entry) {
2804                                 self::process_entry($header, $xpath, $entry, $importer);
2805                         }
2806                 } else {
2807                         $newentries = array();
2808                         $entries = $xpath->query("/atom:feed/atom:entry");
2809                         foreach ($entries AS $entry) {
2810                                 $created = $xpath->query("atom:published/text()", $entry)->item(0)->nodeValue;
2811                                 $newentries[strtotime($created)] = $entry;
2812                         }
2813
2814                         // Now sort after the publishing date
2815                         ksort($newentries);
2816
2817                         foreach ($newentries AS $entry) {
2818                                 self::process_entry($header, $xpath, $entry, $importer);
2819                         }
2820                 }
2821                 logger("Import done for user " . $importer["uid"] . " from contact " . $importer["id"], LOGGER_DEBUG);
2822         }
2823 }