src/Model/GContact.php

   1 <?php
   2 /**
   3  * @file src/Model/GlobalContact.php
   4  * This file includes the GlobalContact class with directory related functions
   5  */
   6 namespace Friendica\Model;
   7
   8 use DOMDocument;
   9 use DOMXPath;
  10 use Exception;
  11 use Friendica\Core\Logger;
  12 use Friendica\Core\Protocol;
  13 use Friendica\Core\System;
  14 use Friendica\Core\Search;
  15 use Friendica\Database\DBA;
  16 use Friendica\DI;
  17 use Friendica\Network\Probe;
  18 use Friendica\Protocol\ActivityPub;
  19 use Friendica\Protocol\PortableContact;
  20 use Friendica\Util\DateTimeFormat;
  21 use Friendica\Util\Network;
  22 use Friendica\Util\Strings;
  23
  24 /**
  25  * This class handles GlobalContact related functions
  26  */
  27 class GContact
  28 {
  29         /**
  30          * Search global contact table by nick or name
  31          *
  32          * @param string $search Name or nick
  33          * @param string $mode   Search mode (e.g. "community")
  34          *
  35          * @return array with search results
  36          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  37          */
  38         public static function searchByName($search, $mode = '')
  39         {
  40                 if (empty($search)) {
  41                         return [];
  42                 }
  43
  44                 // check supported networks
  45                 if (DI::config()->get('system', 'diaspora_enabled')) {
  46                         $diaspora = Protocol::DIASPORA;
  47                 } else {
  48                         $diaspora = Protocol::DFRN;
  49                 }
  50
  51                 if (!DI::config()->get('system', 'ostatus_disabled')) {
  52                         $ostatus = Protocol::OSTATUS;
  53                 } else {
  54                         $ostatus = Protocol::DFRN;
  55                 }
  56
  57                 // check if we search only communities or every contact
  58                 if ($mode === 'community') {
  59                         $extra_sql = ' AND `community`';
  60                 } else {
  61                         $extra_sql = '';
  62                 }
  63
  64                 $search .= '%';
  65
  66                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  67                         WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
  68                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  69                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  70                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  71                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
  72                 );
  73
  74                 $gcontacts = [];
  75                 while ($result = DBA::fetch($results)) {
  76                         $urlparts = parse_url($result['nurl']);
  77
  78                         // Ignore results that look strange.
  79                         // For historic reasons the gcontact table does contain some garbage.
  80                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  81                                 continue;
  82                         }
  83
  84                         $gcontacts[] = Contact::getDetailsByURL($result['nurl'], local_user());
  85                 }
  86                 return $gcontacts;
  87         }
  88
  89         /**
  90          * Link the gcontact entry with user, contact and global contact
  91          *
  92          * @param integer $gcid Global contact ID
  93          * @param integer $uid  User ID
  94          * @param integer $cid  Contact ID
  95          * @param integer $zcid Global Contact ID
  96          * @return void
  97          * @throws Exception
  98          */
  99         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
 100         {
 101                 if ($gcid <= 0) {
 102                         return;
 103                 }
 104
 105                 $condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
 106                 DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
 107         }
 108
 109         /**
 110          * Sanitize the given gcontact data
 111          *
 112          * Generation:
 113          *  0: No definition
 114          *  1: Profiles on this server
 115          *  2: Contacts of profiles on this server
 116          *  3: Contacts of contacts of profiles on this server
 117          *  4: ...
 118          *
 119          * @param array $gcontact array with gcontact data
 120          * @return array $gcontact
 121          * @throws Exception
 122          */
 123         public static function sanitize($gcontact)
 124         {
 125                 if (empty($gcontact['url'])) {
 126                         throw new Exception('URL is empty');
 127                 }
 128
 129                 $gcontact['server_url'] = $gcontact['server_url'] ?? '';
 130
 131                 $urlparts = parse_url($gcontact['url']);
 132                 if (empty($urlparts['scheme'])) {
 133                         throw new Exception('This (' . $gcontact['url'] . ") doesn't seem to be an url.");
 134                 }
 135
 136                 if (in_array($urlparts['host'], ['twitter.com', 'identi.ca'])) {
 137                         throw new Exception('Contact from a non federated network ignored. (' . $gcontact['url'] . ')');
 138                 }
 139
 140                 // Don't store the statusnet connector as network
 141                 // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
 142                 if ($gcontact['network'] == Protocol::STATUSNET) {
 143                         $gcontact['network'] = '';
 144                 }
 145
 146                 // Assure that there are no parameter fragments in the profile url
 147                 if (empty($gcontact['*network']) || in_array($gcontact['network'], Protocol::FEDERATED)) {
 148                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 149                 }
 150
 151                 // The global contacts should contain the original picture, not the cached one
 152                 if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(DI::baseUrl() . '/photo/'))) {
 153                         $gcontact['photo'] = '';
 154                 }
 155
 156                 if (empty($gcontact['network'])) {
 157                         $gcontact['network'] = '';
 158
 159                         $condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
 160                                 Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 161                         $contact = DBA::selectFirst('contact', ['network'], $condition);
 162                         if (DBA::isResult($contact)) {
 163                                 $gcontact['network'] = $contact['network'];
 164                         }
 165
 166                         if (($gcontact['network'] == '') || ($gcontact['network'] == Protocol::OSTATUS)) {
 167                                 $condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
 168                                         $gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 169                                 $contact = DBA::selectFirst('contact', ['network'], $condition);
 170                                 if (DBA::isResult($contact)) {
 171                                         $gcontact['network'] = $contact['network'];
 172                                 }
 173                         }
 174                 }
 175
 176                 $fields = ['network', 'updated', 'server_url', 'url', 'addr'];
 177                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
 178                 if (DBA::isResult($gcnt)) {
 179                         if (!isset($gcontact['network']) && ($gcnt['network'] != Protocol::STATUSNET)) {
 180                                 $gcontact['network'] = $gcnt['network'];
 181                         }
 182                         if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
 183                                 $gcontact['updated'] = $gcnt['updated'];
 184                         }
 185                         if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt['server_url']) != Strings::normaliseLink($gcnt['url']))) {
 186                                 $gcontact['server_url'] = $gcnt['server_url'];
 187                         }
 188                         if (!isset($gcontact['addr'])) {
 189                                 $gcontact['addr'] = $gcnt['addr'];
 190                         }
 191                 }
 192
 193                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']))
 194                         && GServer::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 195                 ) {
 196                         $data = Probe::uri($gcontact['url']);
 197
 198                         if ($data['network'] == Protocol::PHANTOM) {
 199                                 throw new Exception('Probing for URL ' . $gcontact['url'] . ' failed');
 200                         }
 201
 202                         $orig_profile = $gcontact['url'];
 203
 204                         $gcontact['server_url'] = $data['baseurl'];
 205
 206                         $gcontact = array_merge($gcontact, $data);
 207                 }
 208
 209                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 210                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 211                 }
 212
 213                 if (!in_array($gcontact['network'], Protocol::FEDERATED)) {
 214                         throw new Exception('No federated network (' . $gcontact['network'] . ') detected for URL ' . $gcontact['url']);
 215                 }
 216
 217                 if (empty($gcontact['server_url'])) {
 218                         // We check the server url to be sure that it is a real one
 219                         $server_url = self::getBasepath($gcontact['url']);
 220
 221                         // We are now sure that it is a correct URL. So we use it in the future
 222                         if ($server_url != '') {
 223                                 $gcontact['server_url'] = $server_url;
 224                         }
 225                 }
 226
 227                 // The server URL doesn't seem to be valid, so we don't store it.
 228                 if (!GServer::check($gcontact['server_url'], $gcontact['network'])) {
 229                         $gcontact['server_url'] = '';
 230                 }
 231
 232                 return $gcontact;
 233         }
 234
 235         /**
 236          * @param integer $uid id
 237          * @param integer $cid id
 238          * @return integer
 239          * @throws Exception
 240          */
 241         public static function countCommonFriends($uid, $cid)
 242         {
 243                 $r = q(
 244                         "SELECT count(*) as `total`
 245                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 246                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 247                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 248                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 249                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d) ",
 250                         intval($cid),
 251                         intval($uid),
 252                         intval($uid),
 253                         intval($cid)
 254                 );
 255
 256                 if (DBA::isResult($r)) {
 257                         return $r[0]['total'];
 258                 }
 259                 return 0;
 260         }
 261
 262         /**
 263          * @param integer $uid  id
 264          * @param integer $zcid zcid
 265          * @return integer
 266          * @throws Exception
 267          */
 268         public static function countCommonFriendsZcid($uid, $zcid)
 269         {
 270                 $r = q(
 271                         "SELECT count(*) as `total`
 272                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 273                         where `glink`.`zcid` = %d
 274                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0) ",
 275                         intval($zcid),
 276                         intval($uid)
 277                 );
 278
 279                 if (DBA::isResult($r)) {
 280                         return $r[0]['total'];
 281                 }
 282
 283                 return 0;
 284         }
 285
 286         /**
 287          * @param integer $uid     user
 288          * @param integer $cid     cid
 289          * @param integer $start   optional, default 0
 290          * @param integer $limit   optional, default 9999
 291          * @param boolean $shuffle optional, default false
 292          * @return object
 293          * @throws Exception
 294          */
 295         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 296         {
 297                 if ($shuffle) {
 298                         $sql_extra = " order by rand() ";
 299                 } else {
 300                         $sql_extra = " order by `gcontact`.`name` asc ";
 301                 }
 302
 303                 $r = q(
 304                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 305                         FROM `glink`
 306                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 307                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 308                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 309                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 310                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 311                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 312                                 $sql_extra LIMIT %d, %d",
 313                         intval($cid),
 314                         intval($uid),
 315                         intval($uid),
 316                         intval($cid),
 317                         intval($start),
 318                         intval($limit)
 319                 );
 320
 321                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 322                 return $r;
 323         }
 324
 325         /**
 326          * @param integer $uid     user
 327          * @param integer $zcid    zcid
 328          * @param integer $start   optional, default 0
 329          * @param integer $limit   optional, default 9999
 330          * @param boolean $shuffle optional, default false
 331          * @return object
 332          * @throws Exception
 333          */
 334         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 335         {
 336                 if ($shuffle) {
 337                         $sql_extra = " order by rand() ";
 338                 } else {
 339                         $sql_extra = " order by `gcontact`.`name` asc ";
 340                 }
 341
 342                 $r = q(
 343                         "SELECT `gcontact`.*
 344                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 345                         where `glink`.`zcid` = %d
 346                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0)
 347                         $sql_extra limit %d, %d",
 348                         intval($zcid),
 349                         intval($uid),
 350                         intval($start),
 351                         intval($limit)
 352                 );
 353
 354                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 355                 return $r;
 356         }
 357
 358         /**
 359          * @param integer $uid user
 360          * @param integer $cid cid
 361          * @return integer
 362          * @throws Exception
 363          */
 364         public static function countAllFriends($uid, $cid)
 365         {
 366                 $r = q(
 367                         "SELECT count(*) as `total`
 368                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 369                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 370                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 371                         intval($cid),
 372                         intval($uid)
 373                 );
 374
 375                 if (DBA::isResult($r)) {
 376                         return $r[0]['total'];
 377                 }
 378
 379                 return 0;
 380         }
 381
 382         /**
 383          * @param integer $uid   user
 384          * @param integer $cid   cid
 385          * @param integer $start optional, default 0
 386          * @param integer $limit optional, default 80
 387          * @return array
 388          * @throws Exception
 389          */
 390         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 391         {
 392                 $r = q(
 393                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 394                         FROM `glink`
 395                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 396                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 397                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 398                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 399                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 400                         intval($uid),
 401                         intval($cid),
 402                         intval($uid),
 403                         intval($start),
 404                         intval($limit)
 405                 );
 406
 407                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 408                 return $r;
 409         }
 410
 411         /**
 412          * @param int     $uid   user
 413          * @param integer $start optional, default 0
 414          * @param integer $limit optional, default 80
 415          * @return array
 416          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 417          */
 418         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 419         {
 420                 if (!$uid) {
 421                         return [];
 422                 }
 423
 424                 $network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
 425
 426                 if (DI::config()->get('system', 'diaspora_enabled')) {
 427                         $network[] = Protocol::DIASPORA;
 428                 }
 429
 430                 if (!DI::config()->get('system', 'ostatus_disabled')) {
 431                         $network[] = Protocol::OSTATUS;
 432                 }
 433
 434                 $sql_network = "'" . implode("', '", $network) . "'";
 435
 436                 /// @todo This query is really slow
 437                 // By now we cache the data for five minutes
 438                 $r = q(
 439                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 440                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 441                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 442                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 443                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 444                         AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
 445                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 446                         AND `gcontact`.`network` IN (%s)
 447                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 448                         intval($uid),
 449                         intval($uid),
 450                         intval($uid),
 451                         intval($uid),
 452                         DBA::NULL_DATETIME,
 453                         $sql_network,
 454                         intval($start),
 455                         intval($limit)
 456                 );
 457
 458                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 459                         return $r;
 460                 }
 461
 462                 $r2 = q(
 463                         "SELECT gcontact.* FROM gcontact
 464                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 465                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 466                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 467                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 468                         AND `gcontact`.`updated` >= '%s'
 469                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 470                         AND `gcontact`.`network` IN (%s)
 471                         ORDER BY rand() LIMIT %d, %d",
 472                         intval($uid),
 473                         intval($uid),
 474                         intval($uid),
 475                         DBA::NULL_DATETIME,
 476                         $sql_network,
 477                         intval($start),
 478                         intval($limit)
 479                 );
 480
 481                 $list = [];
 482                 foreach ($r2 as $suggestion) {
 483                         $list[$suggestion['nurl']] = $suggestion;
 484                 }
 485
 486                 foreach ($r as $suggestion) {
 487                         $list[$suggestion['nurl']] = $suggestion;
 488                 }
 489
 490                 while (sizeof($list) > ($limit)) {
 491                         array_pop($list);
 492                 }
 493
 494                 return $list;
 495         }
 496
 497         /**
 498          * @return void
 499          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 500          */
 501         public static function updateSuggestions()
 502         {
 503                 $done = [];
 504
 505                 /// @TODO Check if it is really neccessary to poll the own server
 506                 PortableContact::loadWorker(0, 0, 0, DI::baseUrl() . '/poco');
 507
 508                 $done[] = DI::baseUrl() . '/poco';
 509
 510                 if (strlen(DI::config()->get('system', 'directory'))) {
 511                         $x = Network::fetchUrl(Search::getGlobalDirectory() . '/pubsites');
 512                         if (!empty($x)) {
 513                                 $j = json_decode($x);
 514                                 if (!empty($j->entries)) {
 515                                         foreach ($j->entries as $entry) {
 516                                                 GServer::check($entry->url);
 517
 518                                                 $url = $entry->url . '/poco';
 519                                                 if (!in_array($url, $done)) {
 520                                                         PortableContact::loadWorker(0, 0, 0, $url);
 521                                                         $done[] = $url;
 522                                                 }
 523                                         }
 524                                 }
 525                         }
 526                 }
 527
 528                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 529                 $contacts = DBA::p("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN (?, ?)", Protocol::DFRN, Protocol::DIASPORA);
 530                 while ($contact = DBA::fetch($contacts)) {
 531                         $base = substr($contact['poco'], 0, strrpos($contact['poco'], '/'));
 532                         if (!in_array($base, $done)) {
 533                                 PortableContact::loadWorker(0, 0, 0, $base);
 534                         }
 535                 }
 536         }
 537
 538         /**
 539          * Removes unwanted parts from a contact url
 540          *
 541          * @param string $url Contact url
 542          *
 543          * @return string Contact url with the wanted parts
 544          * @throws Exception
 545          */
 546         public static function cleanContactUrl($url)
 547         {
 548                 $parts = parse_url($url);
 549
 550                 if (empty($parts['scheme']) || empty($parts['host'])) {
 551                         return $url;
 552                 }
 553
 554                 $new_url = $parts['scheme'] . '://' . $parts['host'];
 555
 556                 if (!empty($parts['port'])) {
 557                         $new_url .= ':' . $parts['port'];
 558                 }
 559
 560                 if (!empty($parts['path'])) {
 561                         $new_url .= $parts['path'];
 562                 }
 563
 564                 if ($new_url != $url) {
 565                         Logger::info('Cleaned contact url', ['url' => $url, 'new_url' => $new_url, 'callstack' => System::callstack()]);
 566                 }
 567
 568                 return $new_url;
 569         }
 570
 571         /**
 572          * Fetch the gcontact id, add an entry if not existed
 573          *
 574          * @param array $contact contact array
 575          *
 576          * @return bool|int Returns false if not found, integer if contact was found
 577          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 578          * @throws \ImagickException
 579          */
 580         public static function getId($contact)
 581         {
 582                 $gcontact_id = 0;
 583
 584                 if (empty($contact['network'])) {
 585                         Logger::notice('Empty network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
 586                         return false;
 587                 }
 588
 589                 if (in_array($contact['network'], [Protocol::PHANTOM])) {
 590                         Logger::notice('Invalid network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
 591                         return false;
 592                 }
 593
 594                 if ($contact['network'] == Protocol::STATUSNET) {
 595                         $contact['network'] = Protocol::OSTATUS;
 596                 }
 597
 598                 // All new contacts are hidden by default
 599                 if (!isset($contact['hide'])) {
 600                         $contact['hide'] = true;
 601                 }
 602
 603                 // Remove unwanted parts from the contact url (e.g. '?zrl=...')
 604                 if (in_array($contact['network'], Protocol::FEDERATED)) {
 605                         $contact['url'] = self::cleanContactUrl($contact['url']);
 606                 }
 607
 608                 DBA::lock('gcontact');
 609                 $fields = ['id', 'last_contact', 'last_failure', 'network'];
 610                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
 611                 if (DBA::isResult($gcnt)) {
 612                         $gcontact_id = $gcnt['id'];
 613                 } else {
 614                         $contact['location'] = $contact['location'] ?? '';
 615                         $contact['about'] = $contact['about'] ?? '';
 616                         $contact['generation'] = $contact['generation'] ?? 0;
 617
 618                         $fields = ['name' => $contact['name'], 'nick' => $contact['nick'] ?? '', 'addr' => $contact['addr'] ?? '', 'network' => $contact['network'],
 619                                 'url' => $contact['url'], 'nurl' => Strings::normaliseLink($contact['url']), 'photo' => $contact['photo'],
 620                                 'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(), 'location' => $contact['location'],
 621                                 'about' => $contact['about'], 'hide' => $contact['hide'], 'generation' => $contact['generation']];
 622
 623                         DBA::insert('gcontact', $fields);
 624
 625                         $condition = ['nurl' => Strings::normaliseLink($contact['url'])];
 626                         $cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
 627                         if (DBA::isResult($cnt)) {
 628                                 $gcontact_id = $cnt['id'];
 629                         }
 630                 }
 631                 DBA::unlock();
 632
 633                 return $gcontact_id;
 634         }
 635
 636         /**
 637          * Updates the gcontact table from a given array
 638          *
 639          * @param array $contact contact array
 640          *
 641          * @return bool|int Returns false if not found, integer if contact was found
 642          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 643          * @throws \ImagickException
 644          */
 645         public static function update($contact)
 646         {
 647                 // Check for invalid "contact-type" value
 648                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 649                         $contact['contact-type'] = 0;
 650                 }
 651
 652                 /// @todo update contact table as well
 653
 654                 $gcontact_id = self::getId($contact);
 655
 656                 if (!$gcontact_id) {
 657                         return false;
 658                 }
 659
 660                 $public_contact = DBA::selectFirst('gcontact', [
 661                         'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'gender', 'keywords',
 662                         'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
 663                 ], ['id' => $gcontact_id]);
 664
 665                 if (!DBA::isResult($public_contact)) {
 666                         return false;
 667                 }
 668
 669                 // Get all field names
 670                 $fields = [];
 671                 foreach ($public_contact as $field => $data) {
 672                         $fields[$field] = $data;
 673                 }
 674
 675                 unset($fields['url']);
 676                 unset($fields['updated']);
 677                 unset($fields['hide']);
 678
 679                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 680                 // This value is still transmitted via poco.
 681                 if (isset($contact['keywords']) && ($contact['keywords'] == '0')) {
 682                         unset($contact['keywords']);
 683                 }
 684
 685                 if (isset($public_contact['keywords']) && ($public_contact['keywords'] == '0')) {
 686                         $public_contact['keywords'] = '';
 687                 }
 688
 689                 // assign all unassigned fields from the database entry
 690                 foreach ($fields as $field => $data) {
 691                         if (empty($contact[$field])) {
 692                                 $contact[$field] = $public_contact[$field];
 693                         }
 694                 }
 695
 696                 if (!isset($contact['hide'])) {
 697                         $contact['hide'] = $public_contact['hide'];
 698                 }
 699
 700                 $fields['hide'] = $public_contact['hide'];
 701
 702                 if ($contact['network'] == Protocol::STATUSNET) {
 703                         $contact['network'] = Protocol::OSTATUS;
 704                 }
 705
 706                 if (!isset($contact['updated'])) {
 707                         $contact['updated'] = DateTimeFormat::utcNow();
 708                 }
 709
 710                 if ($contact['network'] == Protocol::TWITTER) {
 711                         $contact['server_url'] = 'http://twitter.com';
 712                 }
 713
 714                 if (empty($contact['server_url'])) {
 715                         $data = Probe::uri($contact['url']);
 716                         if ($data['network'] != Protocol::PHANTOM) {
 717                                 $contact['server_url'] = $data['baseurl'];
 718                         }
 719                 } else {
 720                         $contact['server_url'] = Strings::normaliseLink($contact['server_url']);
 721                 }
 722
 723                 if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($contact['nick'])) {
 724                         $hostname = str_replace('http://', '', $contact['server_url']);
 725                         $contact['addr'] = $contact['nick'] . '@' . $hostname;
 726                 }
 727
 728                 // Check if any field changed
 729                 $update = false;
 730                 unset($fields['generation']);
 731
 732                 if ((($contact['generation'] > 0) && ($contact['generation'] <= $public_contact['generation'])) || ($public_contact['generation'] == 0)) {
 733                         foreach ($fields as $field => $data) {
 734                                 if ($contact[$field] != $public_contact[$field]) {
 735                                         Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => $field, 'new' => $contact[$field], 'old' => $public_contact[$field]]);
 736                                         $update = true;
 737                                 }
 738                         }
 739
 740                         if ($contact['generation'] < $public_contact['generation']) {
 741                                 Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => 'generation', 'new' => $contact['generation'], 'old' => $public_contact['generation']]);
 742                                 $update = true;
 743                         }
 744                 }
 745
 746                 if ($update) {
 747                         Logger::debug('Update gcontact.', ['contact' => $contact['url']]);
 748                         $condition = ["`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)",
 749                                         Strings::normaliseLink($contact['url']), $contact['generation']];
 750                         $contact['updated'] = DateTimeFormat::utc($contact['updated']);
 751
 752                         $updated = [
 753                                 'photo' => $contact['photo'], 'name' => $contact['name'],
 754                                 'nick' => $contact['nick'], 'addr' => $contact['addr'],
 755                                 'network' => $contact['network'], 'birthday' => $contact['birthday'],
 756                                 'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 757                                 'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 758                                 'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 759                                 'notify' => $contact['notify'], 'url' => $contact['url'],
 760                                 'location' => $contact['location'], 'about' => $contact['about'],
 761                                 'generation' => $contact['generation'], 'updated' => $contact['updated'],
 762                                 'server_url' => $contact['server_url'], 'connect' => $contact['connect']
 763                         ];
 764
 765                         DBA::update('gcontact', $updated, $condition, $fields);
 766                 }
 767
 768                 return $gcontact_id;
 769         }
 770
 771         /**
 772          * Set the last date that the contact had posted something
 773          *
 774          * @param string $data  Probing result
 775          * @param bool   $force force updating
 776          */
 777         public static function setLastUpdate(array $data, bool $force = false)
 778         {
 779                 // Fetch the global contact
 780                 $gcontact = DBA::selectFirst('gcontact', ['created', 'updated', 'last_contact', 'last_failure'],
 781                         ['nurl' => Strings::normaliseLink($data['url'])]);
 782                 if (!DBA::isResult($gcontact)) {
 783                         return;
 784                 }
 785
 786                 if (!$force && !GServer::updateNeeded($gcontact['created'], $gcontact['updated'], $gcontact['last_failure'], $gcontact['last_contact'])) {
 787                         Logger::info("Don't update profile", ['url' => $data['url'], 'updated' => $gcontact['updated']]);
 788                         return;
 789                 }
 790
 791                 if (self::updateFromNoScrape($data)) {
 792                         return;
 793                 }
 794
 795                 if (!empty($data['outbox'])) {
 796                         self::updateFromOutbox($data['outbox'], $data);
 797                 } elseif (!empty($data['poll']) && ($data['network'] == Protocol::ACTIVITYPUB)) {
 798                         self::updateFromOutbox($data['poll'], $data);
 799                 } elseif (!empty($data['poll'])) {
 800                         self::updateFromFeed($data);
 801                 }
 802         }
 803
 804         /**
 805          * Update a global contact via the "noscrape" endpoint
 806          *
 807          * @param string $data Probing result
 808          *
 809          * @return bool 'true' if update was successful or the server was unreachable
 810          */
 811         private static function updateFromNoScrape(array $data)
 812         {
 813                 // Check the 'noscrape' endpoint when it is a Friendica server
 814                 $gserver = DBA::selectFirst('gserver', ['noscrape'], ["`nurl` = ? AND `noscrape` != ''",
 815                 Strings::normaliseLink($data['baseurl'])]);
 816                 if (!DBA::isResult($gserver)) {
 817                         return false;
 818                 }
 819
 820                 $curlResult = Network::curl($gserver['noscrape'] . '/' . $data['nick']);
 821
 822                 if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
 823                         $noscrape = json_decode($curlResult->getBody(), true);
 824                         if (!empty($noscrape) && !empty($noscrape['updated'])) {
 825                                 $noscrape['updated'] = DateTimeFormat::utc($noscrape['updated'], DateTimeFormat::MYSQL);
 826                                 $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $noscrape['updated']];
 827                                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 828                                 return true;
 829                         }
 830                 } elseif ($curlResult->isTimeout()) {
 831                         // On a timeout return the existing value, but mark the contact as failure
 832                         $fields = ['last_failure' => DateTimeFormat::utcNow()];
 833                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 834                         return true;
 835                 }
 836                 return false;
 837         }
 838
 839         /**
 840          * Update a global contact via an ActivityPub Outbox
 841          *
 842          * @param string $feed
 843          * @param array  $data Probing result
 844          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 845          */
 846         private static function updateFromOutbox(string $feed, array $data)
 847         {
 848                 $outbox = ActivityPub::fetchContent($feed);
 849                 if (empty($outbox)) {
 850                         return;
 851                 }
 852
 853                 if (!empty($outbox['orderedItems'])) {
 854                         $items = $outbox['orderedItems'];
 855                 } elseif (!empty($outbox['first']['orderedItems'])) {
 856                         $items = $outbox['first']['orderedItems'];
 857                 } elseif (!empty($outbox['first']['href'])) {
 858                         self::updateFromOutbox($outbox['first']['href'], $data);
 859                         return;
 860                 } elseif (!empty($outbox['first'])) {
 861                         if (is_string($outbox['first'])) {
 862                                 self::updateFromOutbox($outbox['first'], $data);
 863                         } else {
 864                                 Logger::warning('Unexpected data', ['outbox' => $outbox]);
 865                         }
 866                         return;
 867                 } else {
 868                         $items = [];
 869                 }
 870
 871                 $last_updated = '';
 872                 foreach ($items as $activity) {
 873                         if (!empty($activity['published'])) {
 874                                 $published =  DateTimeFormat::utc($activity['published']);
 875                         } elseif (!empty($activity['object']['published'])) {
 876                                 $published =  DateTimeFormat::utc($activity['object']['published']);
 877                         } else {
 878                                 continue;
 879                         }
 880
 881                         if ($last_updated < $published) {
 882                                 $last_updated = $published;
 883                         }
 884                 }
 885
 886                 if (empty($last_updated)) {
 887                         return;
 888                 }
 889
 890                 $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
 891                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 892         }
 893
 894         /**
 895          * Update a global contact via an XML feed
 896          *
 897          * @param string $data Probing result
 898          */
 899         private static function updateFromFeed(array $data)
 900         {
 901                 // Search for the newest entry in the feed
 902                 $curlResult = Network::curl($data['poll']);
 903                 if (!$curlResult->isSuccess()) {
 904                         $fields = ['last_failure' => DateTimeFormat::utcNow()];
 905                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 906
 907                         Logger::info("Profile wasn't reachable (no feed)", ['url' => $data['url']]);
 908                         return;
 909                 }
 910
 911                 $doc = new DOMDocument();
 912                 @$doc->loadXML($curlResult->getBody());
 913
 914                 $xpath = new DOMXPath($doc);
 915                 $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
 916
 917                 $entries = $xpath->query('/atom:feed/atom:entry');
 918
 919                 $last_updated = '';
 920
 921                 foreach ($entries as $entry) {
 922                         $published_item = $xpath->query('atom:published/text()', $entry)->item(0);
 923                         $updated_item   = $xpath->query('atom:updated/text()'  , $entry)->item(0);
 924                         $published      = !empty($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
 925                         $updated        = !empty($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
 926
 927                         if (empty($published) || empty($updated)) {
 928                                 Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'url' => $data['url']]);
 929                                 continue;
 930                         }
 931
 932                         if ($last_updated < $published) {
 933                                 $last_updated = $published;
 934                         }
 935
 936                         if ($last_updated < $updated) {
 937                                 $last_updated = $updated;
 938                         }
 939                 }
 940
 941                 if (empty($last_updated)) {
 942                         return;
 943                 }
 944
 945                 $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
 946                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 947         }
 948         /**
 949          * Updates the gcontact entry from a given public contact id
 950          *
 951          * @param integer $cid contact id
 952          * @return void
 953          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 954          * @throws \ImagickException
 955          */
 956         public static function updateFromPublicContactID($cid)
 957         {
 958                 self::updateFromPublicContact(['id' => $cid]);
 959         }
 960
 961         /**
 962          * Updates the gcontact entry from a given public contact url
 963          *
 964          * @param string $url contact url
 965          * @return integer gcontact id
 966          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 967          * @throws \ImagickException
 968          */
 969         public static function updateFromPublicContactURL($url)
 970         {
 971                 return self::updateFromPublicContact(['nurl' => Strings::normaliseLink($url)]);
 972         }
 973
 974         /**
 975          * Helper function for updateFromPublicContactID and updateFromPublicContactURL
 976          *
 977          * @param array $condition contact condition
 978          * @return integer gcontact id
 979          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 980          * @throws \ImagickException
 981          */
 982         private static function updateFromPublicContact($condition)
 983         {
 984                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'gender',
 985                         'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
 986                         'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
 987                         'baseurl', 'sensitive', 'unsearchable'];
 988
 989                 $contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
 990                 if (!DBA::isResult($contact)) {
 991                         return 0;
 992                 }
 993
 994                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'gender', 'generation',
 995                         'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
 996                         'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
 997                         'server_url', 'nsfw', 'hide', 'id'];
 998
 999                 $old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
1000                 $do_insert = !DBA::isResult($old_gcontact);
1001                 if ($do_insert) {
1002                         $old_gcontact = [];
1003                 }
1004
1005                 $gcontact = [];
1006
1007                 // These fields are identical in both contact and gcontact
1008                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'gender',
1009                         'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated'];
1010
1011                 foreach ($fields as $field) {
1012                         $gcontact[$field] = $contact[$field];
1013                 }
1014
1015                 // These fields are having different names but the same content
1016                 $gcontact['server_url'] = $contact['baseurl'] ?? ''; // "baseurl" can be null, "server_url" not
1017                 $gcontact['nsfw'] = $contact['sensitive'];
1018                 $gcontact['hide'] = $contact['unsearchable'];
1019                 $gcontact['archived'] = $contact['archive'];
1020                 $gcontact['archive_date'] = $contact['term-date'];
1021                 $gcontact['birthday'] = $contact['bd'];
1022                 $gcontact['photo'] = $contact['avatar'];
1023                 $gcontact['last_contact'] = $contact['success_update'];
1024                 $gcontact['last_failure'] = $contact['failure_update'];
1025                 $gcontact['community'] = ($contact['forum'] || $contact['prv']);
1026
1027                 foreach (['last_contact', 'last_failure', 'updated'] as $field) {
1028                         if (!empty($old_gcontact[$field]) && ($old_gcontact[$field] >= $gcontact[$field])) {
1029                                 unset($gcontact[$field]);
1030                         }
1031                 }
1032
1033                 if (!$gcontact['archived']) {
1034                         $gcontact['archive_date'] = DBA::NULL_DATETIME;
1035                 }
1036
1037                 if (!empty($old_gcontact['created']) && ($old_gcontact['created'] > DBA::NULL_DATETIME)
1038                         && ($old_gcontact['created'] <= $gcontact['created'])) {
1039                         unset($gcontact['created']);
1040                 }
1041
1042                 if (empty($gcontact['birthday']) && ($gcontact['birthday'] <= DBA::NULL_DATETIME)) {
1043                         unset($gcontact['birthday']);
1044                 }
1045
1046                 if (empty($old_gcontact['generation']) || ($old_gcontact['generation'] > 2)) {
1047                         $gcontact['generation'] = 2; // We fetched the data directly from the other server
1048                 }
1049
1050                 if (!$do_insert) {
1051                         DBA::update('gcontact', $gcontact, ['nurl' => $contact['nurl']], $old_gcontact);
1052                         return $old_gcontact['id'];
1053                 } elseif (!$gcontact['archived']) {
1054                         DBA::insert('gcontact', $gcontact);
1055                         return DBA::lastInsertId();
1056                 }
1057         }
1058
1059         /**
1060          * Updates the gcontact entry from probe
1061          *
1062          * @param string  $url   profile link
1063          * @param boolean $force Optional forcing of network probing (otherwise we use the cached data)
1064          *
1065          * @return boolean 'true' when contact had been updated
1066          *
1067          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1068          * @throws \ImagickException
1069          */
1070         public static function updateFromProbe($url, $force = false)
1071         {
1072                 $data = Probe::uri($url, $force);
1073
1074                 if (in_array($data['network'], [Protocol::PHANTOM])) {
1075                         $fields = ['last_failure' => DateTimeFormat::utcNow()];
1076                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1077                         Logger::info('Invalid network for contact', ['url' => $data['url'], 'callstack' => System::callstack()]);
1078                         return false;
1079                 }
1080
1081                 $data['server_url'] = $data['baseurl'];
1082
1083                 self::update($data);
1084
1085                 // Set the date of the latest post
1086                 self::setLastUpdate($data, $force);
1087
1088                 return true;
1089         }
1090
1091         /**
1092          * Update the gcontact entry for a given user id
1093          *
1094          * @param int $uid User ID
1095          * @return bool
1096          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1097          * @throws \ImagickException
1098          */
1099         public static function updateForUser($uid)
1100         {
1101                 $profile = Profile::getByUID($uid);
1102                 if (empty($profile)) {
1103                         Logger::error('Cannot find profile', ['uid' => $uid]);
1104                         return false;
1105                 }
1106
1107                 $user = User::getOwnerDataById($uid);
1108                 if (empty($user)) {
1109                         Logger::error('Cannot find user', ['uid' => $uid]);
1110                         return false;
1111                 }
1112
1113                 $userdata = array_merge($profile, $user);
1114
1115                 $location = Profile::formatLocation(
1116                         ['locality' => $userdata['locality'], 'region' => $userdata['region'], 'country-name' => $userdata['country-name']]
1117                 );
1118
1119                 $gcontact = ['name' => $userdata['name'], 'location' => $location, 'about' => $userdata['about'],
1120                                 'gender' => '', 'keywords' => $userdata['pub_keywords'],
1121                                 'birthday' => $userdata['dob'], 'photo' => $userdata['photo'],
1122                                 "notify" => $userdata['notify'], 'url' => $userdata['url'],
1123                                 "hide" => ($userdata['hidewall'] || !$userdata['net-publish']),
1124                                 'nick' => $userdata['nickname'], 'addr' => $userdata['addr'],
1125                                 "connect" => $userdata['addr'], "server_url" => DI::baseUrl(),
1126                                 "generation" => 1, 'network' => Protocol::DFRN];
1127
1128                 self::update($gcontact);
1129         }
1130
1131         /**
1132          * Get the basepath for a given contact link
1133          *
1134          * @param string $url The gcontact link
1135          * @param boolean $dont_update Don't update the contact
1136          *
1137          * @return string basepath
1138          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1139          * @throws \ImagickException
1140          */
1141         public static function getBasepath($url, $dont_update = false)
1142         {
1143                 $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
1144                 if (!empty($gcontact['server_url'])) {
1145                         return $gcontact['server_url'];
1146                 } elseif ($dont_update) {
1147                         return '';
1148                 }
1149
1150                 self::updateFromProbe($url, true);
1151
1152                 // Fetch the result
1153                 $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
1154                 if (empty($gcontact['server_url'])) {
1155                         Logger::info('No baseurl for gcontact', ['url' => $url]);
1156                         return '';
1157                 }
1158
1159                 Logger::info('Found baseurl for gcontact', ['url' => $url, 'baseurl' => $gcontact['server_url']]);
1160                 return $gcontact['server_url'];
1161         }
1162
1163         /**
1164          * Fetches users of given GNU Social server
1165          *
1166          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
1167          *
1168          * @param string $server Server address
1169          * @return bool
1170          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1171          * @throws \ImagickException
1172          */
1173         public static function fetchGsUsers($server)
1174         {
1175                 Logger::info('Fetching users from GNU Social server', ['server' => $server]);
1176
1177                 $url = $server . '/main/statistics';
1178
1179                 $curlResult = Network::curl($url);
1180                 if (!$curlResult->isSuccess()) {
1181                         return false;
1182                 }
1183
1184                 $statistics = json_decode($curlResult->getBody());
1185
1186                 if (!empty($statistics->config->instance_address)) {
1187                         if (!empty($statistics->config->instance_with_ssl)) {
1188                                 $server = 'https://';
1189                         } else {
1190                                 $server = 'http://';
1191                         }
1192
1193                         $server .= $statistics->config->instance_address;
1194
1195                         $hostname = $statistics->config->instance_address;
1196                 } elseif (!empty($statistics->instance_address)) {
1197                         if (!empty($statistics->instance_with_ssl)) {
1198                                 $server = 'https://';
1199                         } else {
1200                                 $server = 'http://';
1201                         }
1202
1203                         $server .= $statistics->instance_address;
1204
1205                         $hostname = $statistics->instance_address;
1206                 }
1207
1208                 if (!empty($statistics->users)) {
1209                         foreach ($statistics->users as $nick => $user) {
1210                                 $profile_url = $server . '/' . $user->nickname;
1211
1212                                 $contact = ['url' => $profile_url,
1213                                                 'name' => $user->fullname,
1214                                                 'addr' => $user->nickname . '@' . $hostname,
1215                                                 'nick' => $user->nickname,
1216                                                 "network" => Protocol::OSTATUS,
1217                                                 'photo' => DI::baseUrl() . '/images/person-300.jpg'];
1218
1219                                 if (isset($user->bio)) {
1220                                         $contact['about'] = $user->bio;
1221                                 }
1222
1223                                 self::getId($contact);
1224                         }
1225                 }
1226         }
1227
1228         /**
1229          * Asking GNU Social server on a regular base for their user data
1230          *
1231          * @return void
1232          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1233          * @throws \ImagickException
1234          */
1235         public static function discoverGsUsers()
1236         {
1237                 $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
1238
1239                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1240
1241                 $r = DBA::select('gserver', ['nurl', 'url'], [
1242                         '`network` = ?
1243                         AND `last_contact` >= `last_failure`
1244                         AND `last_poco_query` < ?',
1245                         Protocol::OSTATUS,
1246                         $last_update
1247                 ], [
1248                         'limit' => 5,
1249                         'order' => ['RAND()']
1250                 ]);
1251
1252                 if (!DBA::isResult($r)) {
1253                         return;
1254                 }
1255
1256                 foreach ($r as $server) {
1257                         self::fetchGsUsers($server['url']);
1258                         DBA::update('gserver', ['last_poco_query' => DateTimeFormat::utcNow()], ['nurl' => $server['nurl']]);
1259                 }
1260         }
1261
1262         /**
1263          * Returns a random, global contact of the current node
1264          *
1265          * @return string The profile URL
1266          * @throws Exception
1267          */
1268         public static function getRandomUrl()
1269         {
1270                 $r = DBA::selectFirst('gcontact', ['url'], [
1271                         '`network` = ?
1272                         AND `last_contact` >= `last_failure`
1273                         AND `updated` > ?',
1274                         Protocol::DFRN,
1275                         DateTimeFormat::utc('now - 1 month'),
1276                 ], ['order' => ['RAND()']]);
1277
1278                 if (DBA::isResult($r)) {
1279                         return $r['url'];
1280                 }
1281
1282                 return '';
1283         }
1284 }