src/Model/GContact.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Model;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Exception;
  27 use Friendica\Core\Logger;
  28 use Friendica\Core\Protocol;
  29 use Friendica\Core\Search;
  30 use Friendica\Core\System;
  31 use Friendica\Core\Worker;
  32 use Friendica\Database\DBA;
  33 use Friendica\DI;
  34 use Friendica\Network\Probe;
  35 use Friendica\Protocol\ActivityPub;
  36 use Friendica\Protocol\PortableContact;
  37 use Friendica\Util\DateTimeFormat;
  38 use Friendica\Util\Network;
  39 use Friendica\Util\Strings;
  40
  41 /**
  42  * This class handles GlobalContact related functions
  43  */
  44 class GContact
  45 {
  46         /**
  47          * Search global contact table by nick or name
  48          *
  49          * @param string $search Name or nick
  50          * @param string $mode   Search mode (e.g. "community")
  51          *
  52          * @return array with search results
  53          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  54          */
  55         public static function searchByName($search, $mode = '')
  56         {
  57                 if (empty($search)) {
  58                         return [];
  59                 }
  60
  61                 // check supported networks
  62                 if (DI::config()->get('system', 'diaspora_enabled')) {
  63                         $diaspora = Protocol::DIASPORA;
  64                 } else {
  65                         $diaspora = Protocol::DFRN;
  66                 }
  67
  68                 if (!DI::config()->get('system', 'ostatus_disabled')) {
  69                         $ostatus = Protocol::OSTATUS;
  70                 } else {
  71                         $ostatus = Protocol::DFRN;
  72                 }
  73
  74                 // check if we search only communities or every contact
  75                 if ($mode === 'community') {
  76                         $extra_sql = ' AND `community`';
  77                 } else {
  78                         $extra_sql = '';
  79                 }
  80
  81                 $search .= '%';
  82
  83                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  84                         WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
  85                                 NOT `failed` AND
  86                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  87                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  88                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
  89                 );
  90
  91                 $gcontacts = [];
  92                 while ($result = DBA::fetch($results)) {
  93                         $urlparts = parse_url($result['nurl']);
  94
  95                         // Ignore results that look strange.
  96                         // For historic reasons the gcontact table does contain some garbage.
  97                         if (empty($result['nurl']) || !empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  98                                 continue;
  99                         }
 100
 101                         $gcontacts[] = Contact::getByURLForUser($result['nurl'], local_user());
 102                 }
 103                 DBA::close($results);
 104                 return $gcontacts;
 105         }
 106
 107         /**
 108          * Link the gcontact entry with user, contact and global contact
 109          *
 110          * @param integer $gcid Global contact ID
 111          * @param integer $uid  User ID
 112          * @param integer $cid  Contact ID
 113          * @param integer $zcid Global Contact ID
 114          * @return void
 115          * @throws Exception
 116          */
 117         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
 118         {
 119                 if ($gcid <= 0) {
 120                         return;
 121                 }
 122
 123                 $condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
 124                 DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
 125         }
 126
 127         /**
 128          * Sanitize the given gcontact data
 129          *
 130          * Generation:
 131          *  0: No definition
 132          *  1: Profiles on this server
 133          *  2: Contacts of profiles on this server
 134          *  3: Contacts of contacts of profiles on this server
 135          *  4: ...
 136          *
 137          * @param array $gcontact array with gcontact data
 138          * @return array $gcontact
 139          * @throws Exception
 140          */
 141         public static function sanitize($gcontact)
 142         {
 143                 if (empty($gcontact['url'])) {
 144                         throw new Exception('URL is empty');
 145                 }
 146
 147                 $gcontact['server_url'] = $gcontact['server_url'] ?? '';
 148
 149                 $urlparts = parse_url($gcontact['url']);
 150                 if (empty($urlparts['scheme'])) {
 151                         throw new Exception('This (' . $gcontact['url'] . ") doesn't seem to be an url.");
 152                 }
 153
 154                 if (in_array($urlparts['host'], ['twitter.com', 'identi.ca'])) {
 155                         throw new Exception('Contact from a non federated network ignored. (' . $gcontact['url'] . ')');
 156                 }
 157
 158                 // Don't store the statusnet connector as network
 159                 // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
 160                 if ($gcontact['network'] == Protocol::STATUSNET) {
 161                         $gcontact['network'] = '';
 162                 }
 163
 164                 // Assure that there are no parameter fragments in the profile url
 165                 if (empty($gcontact['*network']) || in_array($gcontact['network'], Protocol::FEDERATED)) {
 166                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 167                 }
 168
 169                 // The global contacts should contain the original picture, not the cached one
 170                 if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(DI::baseUrl() . '/photo/'))) {
 171                         $gcontact['photo'] = '';
 172                 }
 173
 174                 if (empty($gcontact['network'])) {
 175                         $gcontact['network'] = '';
 176
 177                         $condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
 178                                 Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 179                         $contact = DBA::selectFirst('contact', ['network'], $condition);
 180                         if (DBA::isResult($contact)) {
 181                                 $gcontact['network'] = $contact['network'];
 182                         }
 183
 184                         if (($gcontact['network'] == '') || ($gcontact['network'] == Protocol::OSTATUS)) {
 185                                 $condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
 186                                         $gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 187                                 $contact = DBA::selectFirst('contact', ['network'], $condition);
 188                                 if (DBA::isResult($contact)) {
 189                                         $gcontact['network'] = $contact['network'];
 190                                 }
 191                         }
 192                 }
 193
 194                 $fields = ['network', 'updated', 'server_url', 'url', 'addr'];
 195                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
 196                 if (DBA::isResult($gcnt)) {
 197                         if (!isset($gcontact['network']) && ($gcnt['network'] != Protocol::STATUSNET)) {
 198                                 $gcontact['network'] = $gcnt['network'];
 199                         }
 200                         if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
 201                                 $gcontact['updated'] = $gcnt['updated'];
 202                         }
 203                         if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt['server_url']) != Strings::normaliseLink($gcnt['url']))) {
 204                                 $gcontact['server_url'] = $gcnt['server_url'];
 205                         }
 206                         if (!isset($gcontact['addr'])) {
 207                                 $gcontact['addr'] = $gcnt['addr'];
 208                         }
 209                 }
 210
 211                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']))
 212                         && GServer::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 213                 ) {
 214                         $data = Probe::uri($gcontact['url']);
 215
 216                         if ($data['network'] == Protocol::PHANTOM) {
 217                                 throw new Exception('Probing for URL ' . $gcontact['url'] . ' failed');
 218                         }
 219
 220                         $gcontact['server_url'] = $data['baseurl'];
 221                         $gcontact['failed'] = false;
 222
 223                         $gcontact = array_merge($gcontact, $data);
 224                 }
 225
 226                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 227                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 228                 }
 229
 230                 if (!in_array($gcontact['network'], Protocol::FEDERATED)) {
 231                         throw new Exception('No federated network (' . $gcontact['network'] . ') detected for URL ' . $gcontact['url']);
 232                 }
 233
 234                 if (empty($gcontact['server_url'])) {
 235                         // We check the server url to be sure that it is a real one
 236                         $server_url = self::getBasepath($gcontact['url']);
 237
 238                         // We are now sure that it is a correct URL. So we use it in the future
 239                         if ($server_url != '') {
 240                                 $gcontact['server_url'] = $server_url;
 241                         }
 242                 }
 243
 244                 // The server URL doesn't seem to be valid, so we don't store it.
 245                 if (!GServer::check($gcontact['server_url'], $gcontact['network'])) {
 246                         $gcontact['server_url'] = '';
 247                 }
 248
 249                 return $gcontact;
 250         }
 251
 252         /**
 253          * @param integer $uid id
 254          * @param integer $cid id
 255          * @return integer
 256          * @throws Exception
 257          */
 258         public static function countCommonFriends($uid, $cid)
 259         {
 260                 $r = q(
 261                         "SELECT count(*) as `total`
 262                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 263                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 264                         NOT `gcontact`.`failed`
 265                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d) ",
 266                         intval($cid),
 267                         intval($uid),
 268                         intval($uid),
 269                         intval($cid)
 270                 );
 271
 272                 if (DBA::isResult($r)) {
 273                         return $r[0]['total'];
 274                 }
 275                 return 0;
 276         }
 277
 278         /**
 279          * @param integer $uid  id
 280          * @param integer $zcid zcid
 281          * @return integer
 282          * @throws Exception
 283          */
 284         public static function countCommonFriendsZcid($uid, $zcid)
 285         {
 286                 $r = q(
 287                         "SELECT count(*) as `total`
 288                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 289                         where `glink`.`zcid` = %d
 290                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0) ",
 291                         intval($zcid),
 292                         intval($uid)
 293                 );
 294
 295                 if (DBA::isResult($r)) {
 296                         return $r[0]['total'];
 297                 }
 298
 299                 return 0;
 300         }
 301
 302         /**
 303          * @param integer $uid     user
 304          * @param integer $cid     cid
 305          * @param integer $start   optional, default 0
 306          * @param integer $limit   optional, default 9999
 307          * @param boolean $shuffle optional, default false
 308          * @return object
 309          * @throws Exception
 310          */
 311         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 312         {
 313                 if ($shuffle) {
 314                         $sql_extra = " order by rand() ";
 315                 } else {
 316                         $sql_extra = " order by `gcontact`.`name` asc ";
 317                 }
 318
 319                 $r = q(
 320                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 321                         FROM `glink`
 322                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 323                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 324                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 325                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 326                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 327                                 AND NOT `gcontact`.`failed`
 328                                 $sql_extra LIMIT %d, %d",
 329                         intval($cid),
 330                         intval($uid),
 331                         intval($uid),
 332                         intval($cid),
 333                         intval($start),
 334                         intval($limit)
 335                 );
 336
 337                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 338                 return $r;
 339         }
 340
 341         /**
 342          * @param integer $uid     user
 343          * @param integer $zcid    zcid
 344          * @param integer $start   optional, default 0
 345          * @param integer $limit   optional, default 9999
 346          * @param boolean $shuffle optional, default false
 347          * @return object
 348          * @throws Exception
 349          */
 350         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 351         {
 352                 if ($shuffle) {
 353                         $sql_extra = " order by rand() ";
 354                 } else {
 355                         $sql_extra = " order by `gcontact`.`name` asc ";
 356                 }
 357
 358                 $r = q(
 359                         "SELECT `gcontact`.*
 360                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 361                         where `glink`.`zcid` = %d
 362                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0)
 363                         $sql_extra limit %d, %d",
 364                         intval($zcid),
 365                         intval($uid),
 366                         intval($start),
 367                         intval($limit)
 368                 );
 369
 370                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 371                 return $r;
 372         }
 373
 374         /**
 375          * @param integer $uid user
 376          * @param integer $cid cid
 377          * @return integer
 378          * @throws Exception
 379          */
 380         public static function countAllFriends($uid, $cid)
 381         {
 382                 $r = q(
 383                         "SELECT count(*) as `total`
 384                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 385                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 386                         NOT `gcontact`.`failed`",
 387                         intval($cid),
 388                         intval($uid)
 389                 );
 390
 391                 if (DBA::isResult($r)) {
 392                         return $r[0]['total'];
 393                 }
 394
 395                 return 0;
 396         }
 397
 398         /**
 399          * @param integer $uid   user
 400          * @param integer $cid   cid
 401          * @param integer $start optional, default 0
 402          * @param integer $limit optional, default 80
 403          * @return array
 404          * @throws Exception
 405          */
 406         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 407         {
 408                 $r = q(
 409                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 410                         FROM `glink`
 411                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 412                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 413                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 414                         NOT `gcontact`.`failed`
 415                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 416                         intval($uid),
 417                         intval($cid),
 418                         intval($uid),
 419                         intval($start),
 420                         intval($limit)
 421                 );
 422
 423                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 424                 return $r;
 425         }
 426
 427         /**
 428          * @param int     $uid   user
 429          * @param integer $start optional, default 0
 430          * @param integer $limit optional, default 80
 431          * @return array
 432          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 433          */
 434         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 435         {
 436                 if (!$uid) {
 437                         return [];
 438                 }
 439
 440                 $network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
 441
 442                 if (DI::config()->get('system', 'diaspora_enabled')) {
 443                         $network[] = Protocol::DIASPORA;
 444                 }
 445
 446                 if (!DI::config()->get('system', 'ostatus_disabled')) {
 447                         $network[] = Protocol::OSTATUS;
 448                 }
 449
 450                 $sql_network = "'" . implode("', '", $network) . "'";
 451
 452                 /// @todo This query is really slow
 453                 // By now we cache the data for five minutes
 454                 $r = q(
 455                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 456                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 457                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 458                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 459                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 460                         AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
 461                         AND NOT `gcontact`.`failed`
 462                         AND `gcontact`.`network` IN (%s)
 463                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 464                         intval($uid),
 465                         intval($uid),
 466                         intval($uid),
 467                         intval($uid),
 468                         DBA::NULL_DATETIME,
 469                         $sql_network,
 470                         intval($start),
 471                         intval($limit)
 472                 );
 473
 474                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 475                         return $r;
 476                 }
 477
 478                 $r2 = q(
 479                         "SELECT gcontact.* FROM gcontact
 480                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 481                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 482                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 483                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 484                         AND `gcontact`.`updated` >= '%s'
 485                         AND NOT `gcontact`.`failed`
 486                         AND `gcontact`.`network` IN (%s)
 487                         ORDER BY rand() LIMIT %d, %d",
 488                         intval($uid),
 489                         intval($uid),
 490                         intval($uid),
 491                         DBA::NULL_DATETIME,
 492                         $sql_network,
 493                         intval($start),
 494                         intval($limit)
 495                 );
 496
 497                 $list = [];
 498                 foreach ($r2 as $suggestion) {
 499                         $list[$suggestion['nurl']] = $suggestion;
 500                 }
 501
 502                 foreach ($r as $suggestion) {
 503                         $list[$suggestion['nurl']] = $suggestion;
 504                 }
 505
 506                 while (sizeof($list) > ($limit)) {
 507                         array_pop($list);
 508                 }
 509
 510                 return $list;
 511         }
 512
 513         /**
 514          * @return void
 515          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 516          */
 517         public static function updateSuggestions()
 518         {
 519                 $done = [];
 520
 521                 /// @TODO Check if it is really neccessary to poll the own server
 522                 PortableContact::loadWorker(0, 0, 0, DI::baseUrl() . '/poco');
 523
 524                 $done[] = DI::baseUrl() . '/poco';
 525
 526                 if (strlen(DI::config()->get('system', 'directory'))) {
 527                         $x = DI::httpRequest()->fetch(Search::getGlobalDirectory() . '/pubsites');
 528                         if (!empty($x)) {
 529                                 $j = json_decode($x);
 530                                 if (!empty($j->entries)) {
 531                                         foreach ($j->entries as $entry) {
 532                                                 GServer::check($entry->url);
 533
 534                                                 $url = $entry->url . '/poco';
 535                                                 if (!in_array($url, $done)) {
 536                                                         PortableContact::loadWorker(0, 0, 0, $url);
 537                                                         $done[] = $url;
 538                                                 }
 539                                         }
 540                                 }
 541                         }
 542                 }
 543
 544                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 545                 $contacts = DBA::p("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN (?, ?)", Protocol::DFRN, Protocol::DIASPORA);
 546                 while ($contact = DBA::fetch($contacts)) {
 547                         $base = substr($contact['poco'], 0, strrpos($contact['poco'], '/'));
 548                         if (!in_array($base, $done)) {
 549                                 PortableContact::loadWorker(0, 0, 0, $base);
 550                         }
 551                 }
 552                 DBA::close($contacts);
 553         }
 554
 555         /**
 556          * Removes unwanted parts from a contact url
 557          *
 558          * @param string $url Contact url
 559          *
 560          * @return string Contact url with the wanted parts
 561          * @throws Exception
 562          */
 563         public static function cleanContactUrl($url)
 564         {
 565                 $parts = parse_url($url);
 566
 567                 if (empty($parts['scheme']) || empty($parts['host'])) {
 568                         return $url;
 569                 }
 570
 571                 $new_url = $parts['scheme'] . '://' . $parts['host'];
 572
 573                 if (!empty($parts['port'])) {
 574                         $new_url .= ':' . $parts['port'];
 575                 }
 576
 577                 if (!empty($parts['path'])) {
 578                         $new_url .= $parts['path'];
 579                 }
 580
 581                 if ($new_url != $url) {
 582                         Logger::info('Cleaned contact url', ['url' => $url, 'new_url' => $new_url, 'callstack' => System::callstack()]);
 583                 }
 584
 585                 return $new_url;
 586         }
 587
 588         /**
 589          * Fetch the gcontact id, add an entry if not existed
 590          *
 591          * @param array $contact contact array
 592          *
 593          * @return bool|int Returns false if not found, integer if contact was found
 594          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 595          * @throws \ImagickException
 596          */
 597         public static function getId($contact)
 598         {
 599                 if (empty($contact['network'])) {
 600                         Logger::notice('Empty network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
 601                         return false;
 602                 }
 603
 604                 if (in_array($contact['network'], [Protocol::PHANTOM])) {
 605                         Logger::notice('Invalid network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
 606                         return false;
 607                 }
 608
 609                 if ($contact['network'] == Protocol::STATUSNET) {
 610                         $contact['network'] = Protocol::OSTATUS;
 611                 }
 612
 613                 // Remove unwanted parts from the contact url (e.g. '?zrl=...')
 614                 if (in_array($contact['network'], Protocol::FEDERATED)) {
 615                         $contact['url'] = self::cleanContactUrl($contact['url']);
 616                 }
 617
 618                 $condition = ['nurl' => Strings::normaliseLink($contact['url'])];
 619                 $gcontact = DBA::selectFirst('gcontact', ['id'], $condition, ['order' => ['id']]);
 620                 if (DBA::isResult($gcontact)) {
 621                         return $gcontact['id'];
 622                 }
 623
 624                 $contact['location'] = $contact['location'] ?? '';
 625                 $contact['about'] = $contact['about'] ?? '';
 626                 $contact['generation'] = $contact['generation'] ?? 0;
 627                 $contact['hide'] = $contact['hide'] ?? true;
 628
 629                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'] ?? '', 'addr' => $contact['addr'] ?? '', 'network' => $contact['network'],
 630                         'url' => $contact['url'], 'nurl' => Strings::normaliseLink($contact['url']), 'photo' => $contact['photo'],
 631                         'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(), 'location' => $contact['location'],
 632                         'about' => $contact['about'], 'hide' => $contact['hide'], 'generation' => $contact['generation'], 'failed' => false];
 633
 634                 DBA::insert('gcontact', $fields);
 635
 636                 // We intentionally aren't using lastInsertId here. There is a chance for duplicates.
 637                 $gcontact = DBA::selectFirst('gcontact', ['id'], $condition, ['order' => ['id']]);
 638                 if (!DBA::isResult($gcontact)) {
 639                         Logger::info('GContact creation failed', $fields);
 640                         // Shouldn't happen
 641                         return 0;
 642                 }
 643                 return $gcontact['id'];
 644         }
 645
 646         /**
 647          * Updates the gcontact table from a given array
 648          *
 649          * @param array $contact contact array
 650          *
 651          * @return bool|int Returns false if not found, integer if contact was found
 652          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 653          * @throws \ImagickException
 654          */
 655         public static function update($contact)
 656         {
 657                 // Check for invalid "contact-type" value
 658                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 659                         $contact['contact-type'] = 0;
 660                 }
 661
 662                 /// @todo update contact table as well
 663
 664                 $gcontact_id = self::getId($contact);
 665
 666                 if (!$gcontact_id) {
 667                         return false;
 668                 }
 669
 670                 $public_contact = DBA::selectFirst('gcontact', [
 671                         'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords', 'gsid', 'failed',
 672                         'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
 673                 ], ['id' => $gcontact_id]);
 674
 675                 if (!DBA::isResult($public_contact)) {
 676                         return false;
 677                 }
 678
 679                 // Get all field names
 680                 $fields = [];
 681                 foreach ($public_contact as $field => $data) {
 682                         $fields[$field] = $data;
 683                 }
 684
 685                 unset($fields['url']);
 686                 unset($fields['updated']);
 687                 unset($fields['hide']);
 688
 689                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 690                 // This value is still transmitted via poco.
 691                 if (isset($contact['keywords']) && ($contact['keywords'] == '0')) {
 692                         unset($contact['keywords']);
 693                 }
 694
 695                 if (isset($public_contact['keywords']) && ($public_contact['keywords'] == '0')) {
 696                         $public_contact['keywords'] = '';
 697                 }
 698
 699                 // assign all unassigned fields from the database entry
 700                 foreach ($fields as $field => $data) {
 701                         if (empty($contact[$field])) {
 702                                 $contact[$field] = $public_contact[$field];
 703                         }
 704                 }
 705
 706                 if (!isset($contact['hide'])) {
 707                         $contact['hide'] = $public_contact['hide'];
 708                 }
 709
 710                 $fields['hide'] = $public_contact['hide'];
 711
 712                 if ($contact['network'] == Protocol::STATUSNET) {
 713                         $contact['network'] = Protocol::OSTATUS;
 714                 }
 715
 716                 if (!isset($contact['updated'])) {
 717                         $contact['updated'] = DateTimeFormat::utcNow();
 718                 }
 719
 720                 if ($contact['network'] == Protocol::TWITTER) {
 721                         $contact['server_url'] = 'http://twitter.com';
 722                 }
 723
 724                 if (empty($contact['server_url'])) {
 725                         $data = Probe::uri($contact['url']);
 726                         if ($data['network'] != Protocol::PHANTOM) {
 727                                 $contact['server_url'] = $data['baseurl'];
 728                         }
 729                 } else {
 730                         $contact['server_url'] = Strings::normaliseLink($contact['server_url']);
 731                 }
 732
 733                 if (!empty($contact['server_url']) && empty($contact['gsid'])) {
 734                         $contact['gsid'] = GServer::getID($contact['server_url']);
 735                 }
 736
 737                 if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($contact['nick'])) {
 738                         $hostname = str_replace('http://', '', $contact['server_url']);
 739                         $contact['addr'] = $contact['nick'] . '@' . $hostname;
 740                 }
 741
 742                 // Check if any field changed
 743                 $update = false;
 744                 unset($fields['generation']);
 745
 746                 if ((($contact['generation'] > 0) && ($contact['generation'] <= $public_contact['generation'])) || ($public_contact['generation'] == 0)) {
 747                         foreach ($fields as $field => $data) {
 748                                 if ($contact[$field] != $public_contact[$field]) {
 749                                         Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => $field, 'new' => $contact[$field], 'old' => $public_contact[$field]]);
 750                                         $update = true;
 751                                 }
 752                         }
 753
 754                         if ($contact['generation'] < $public_contact['generation']) {
 755                                 Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => 'generation', 'new' => $contact['generation'], 'old' => $public_contact['generation']]);
 756                                 $update = true;
 757                         }
 758                 }
 759
 760                 if ($update) {
 761                         Logger::debug('Update gcontact.', ['contact' => $contact['url']]);
 762                         $condition = ["`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)",
 763                                         Strings::normaliseLink($contact['url']), $contact['generation']];
 764                         $contact['updated'] = DateTimeFormat::utc($contact['updated']);
 765
 766                         $updated = [
 767                                 'photo' => $contact['photo'], 'name' => $contact['name'],
 768                                 'nick' => $contact['nick'], 'addr' => $contact['addr'],
 769                                 'network' => $contact['network'], 'birthday' => $contact['birthday'],
 770                                 'keywords' => $contact['keywords'],
 771                                 'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 772                                 'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 773                                 'notify' => $contact['notify'], 'url' => $contact['url'],
 774                                 'location' => $contact['location'], 'about' => $contact['about'],
 775                                 'generation' => $contact['generation'], 'updated' => $contact['updated'],
 776                                 'server_url' => $contact['server_url'], 'connect' => $contact['connect'],
 777                                 'failed' => $contact['failed'], 'gsid' => $contact['gsid']
 778                         ];
 779
 780                         DBA::update('gcontact', $updated, $condition, $fields);
 781                 }
 782
 783                 return $gcontact_id;
 784         }
 785
 786         /**
 787          * Set the last date that the contact had posted something
 788          *
 789          * @param string $data  Probing result
 790          * @param bool   $force force updating
 791          */
 792         public static function setLastUpdate(array $data, bool $force = false)
 793         {
 794                 // Fetch the global contact
 795                 $gcontact = DBA::selectFirst('gcontact', ['created', 'updated', 'last_contact', 'last_failure'],
 796                         ['nurl' => Strings::normaliseLink($data['url'])]);
 797                 if (!DBA::isResult($gcontact)) {
 798                         return;
 799                 }
 800
 801                 if (!$force && !GServer::updateNeeded($gcontact['created'], $gcontact['updated'], $gcontact['last_failure'], $gcontact['last_contact'])) {
 802                         Logger::info("Don't update profile", ['url' => $data['url'], 'updated' => $gcontact['updated']]);
 803                         return;
 804                 }
 805
 806                 if (self::updateFromNoScrape($data)) {
 807                         return;
 808                 }
 809
 810                 if (!empty($data['outbox'])) {
 811                         self::updateFromOutbox($data['outbox'], $data);
 812                 } elseif (!empty($data['poll']) && ($data['network'] == Protocol::ACTIVITYPUB)) {
 813                         self::updateFromOutbox($data['poll'], $data);
 814                 } elseif (!empty($data['poll'])) {
 815                         self::updateFromFeed($data);
 816                 }
 817         }
 818
 819         /**
 820          * Update a global contact via the "noscrape" endpoint
 821          *
 822          * @param string $data Probing result
 823          *
 824          * @return bool 'true' if update was successful or the server was unreachable
 825          */
 826         private static function updateFromNoScrape(array $data)
 827         {
 828                 // Check the 'noscrape' endpoint when it is a Friendica server
 829                 $gserver = DBA::selectFirst('gserver', ['noscrape'], ["`nurl` = ? AND `noscrape` != ''",
 830                 Strings::normaliseLink($data['baseurl'])]);
 831                 if (!DBA::isResult($gserver)) {
 832                         return false;
 833                 }
 834
 835                 $curlResult = DI::httpRequest()->get($gserver['noscrape'] . '/' . $data['nick']);
 836
 837                 if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
 838                         $noscrape = json_decode($curlResult->getBody(), true);
 839                         if (!empty($noscrape) && !empty($noscrape['updated'])) {
 840                                 $noscrape['updated'] = DateTimeFormat::utc($noscrape['updated'], DateTimeFormat::MYSQL);
 841                                 $fields = ['failed' => false, 'last_contact' => DateTimeFormat::utcNow(), 'updated' => $noscrape['updated']];
 842                                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 843                                 return true;
 844                         }
 845                 } elseif ($curlResult->isTimeout()) {
 846                         // On a timeout return the existing value, but mark the contact as failure
 847                         $fields = ['failed' => true, 'last_failure' => DateTimeFormat::utcNow()];
 848                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 849                         return true;
 850                 }
 851                 return false;
 852         }
 853
 854         /**
 855          * Update a global contact via an ActivityPub Outbox
 856          *
 857          * @param string $feed
 858          * @param array  $data Probing result
 859          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 860          */
 861         private static function updateFromOutbox(string $feed, array $data)
 862         {
 863                 $outbox = ActivityPub::fetchContent($feed);
 864                 if (empty($outbox)) {
 865                         return;
 866                 }
 867
 868                 if (!empty($outbox['orderedItems'])) {
 869                         $items = $outbox['orderedItems'];
 870                 } elseif (!empty($outbox['first']['orderedItems'])) {
 871                         $items = $outbox['first']['orderedItems'];
 872                 } elseif (!empty($outbox['first']['href']) && ($outbox['first']['href'] != $feed)) {
 873                         self::updateFromOutbox($outbox['first']['href'], $data);
 874                         return;
 875                 } elseif (!empty($outbox['first'])) {
 876                         if (is_string($outbox['first']) && ($outbox['first'] != $feed)) {
 877                                 self::updateFromOutbox($outbox['first'], $data);
 878                         } else {
 879                                 Logger::warning('Unexpected data', ['outbox' => $outbox]);
 880                         }
 881                         return;
 882                 } else {
 883                         $items = [];
 884                 }
 885
 886                 $last_updated = '';
 887                 foreach ($items as $activity) {
 888                         if (!empty($activity['published'])) {
 889                                 $published =  DateTimeFormat::utc($activity['published']);
 890                         } elseif (!empty($activity['object']['published'])) {
 891                                 $published =  DateTimeFormat::utc($activity['object']['published']);
 892                         } else {
 893                                 continue;
 894                         }
 895
 896                         if ($last_updated < $published) {
 897                                 $last_updated = $published;
 898                         }
 899                 }
 900
 901                 if (empty($last_updated)) {
 902                         return;
 903                 }
 904
 905                 $fields = ['failed' => false, 'last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
 906                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 907         }
 908
 909         /**
 910          * Update a global contact via an XML feed
 911          *
 912          * @param string $data Probing result
 913          */
 914         private static function updateFromFeed(array $data)
 915         {
 916                 // Search for the newest entry in the feed
 917                 $curlResult = DI::httpRequest()->get($data['poll']);
 918                 if (!$curlResult->isSuccess()) {
 919                         $fields = ['failed' => true, 'last_failure' => DateTimeFormat::utcNow()];
 920                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 921
 922                         Logger::info("Profile wasn't reachable (no feed)", ['url' => $data['url']]);
 923                         return;
 924                 }
 925
 926                 $doc = new DOMDocument();
 927                 @$doc->loadXML($curlResult->getBody());
 928
 929                 $xpath = new DOMXPath($doc);
 930                 $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
 931
 932                 $entries = $xpath->query('/atom:feed/atom:entry');
 933
 934                 $last_updated = '';
 935
 936                 foreach ($entries as $entry) {
 937                         $published_item = $xpath->query('atom:published/text()', $entry)->item(0);
 938                         $updated_item   = $xpath->query('atom:updated/text()'  , $entry)->item(0);
 939                         $published      = !empty($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
 940                         $updated        = !empty($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
 941
 942                         if (empty($published) || empty($updated)) {
 943                                 Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'url' => $data['url']]);
 944                                 continue;
 945                         }
 946
 947                         if ($last_updated < $published) {
 948                                 $last_updated = $published;
 949                         }
 950
 951                         if ($last_updated < $updated) {
 952                                 $last_updated = $updated;
 953                         }
 954                 }
 955
 956                 if (empty($last_updated)) {
 957                         return;
 958                 }
 959
 960                 $fields = ['failed' => false, 'last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
 961                 DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
 962         }
 963         /**
 964          * Updates the gcontact entry from a given public contact id
 965          *
 966          * @param integer $cid contact id
 967          * @return void
 968          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 969          * @throws \ImagickException
 970          */
 971         public static function updateFromPublicContactID($cid)
 972         {
 973                 self::updateFromPublicContact(['id' => $cid]);
 974         }
 975
 976         /**
 977          * Updates the gcontact entry from a given public contact url
 978          *
 979          * @param string $url contact url
 980          * @return integer gcontact id
 981          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 982          * @throws \ImagickException
 983          */
 984         public static function updateFromPublicContactURL($url)
 985         {
 986                 return self::updateFromPublicContact(['nurl' => Strings::normaliseLink($url)]);
 987         }
 988
 989         /**
 990          * Helper function for updateFromPublicContactID and updateFromPublicContactURL
 991          *
 992          * @param array $condition contact condition
 993          * @return integer gcontact id
 994          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 995          * @throws \ImagickException
 996          */
 997         private static function updateFromPublicContact($condition)
 998         {
 999                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
1000                         'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
1001                         'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
1002                         'baseurl', 'gsid', 'sensitive', 'unsearchable', 'failed'];
1003
1004                 $contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
1005                 if (!DBA::isResult($contact)) {
1006                         return 0;
1007                 }
1008
1009                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'generation',
1010                         'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
1011                         'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
1012                         'server_url', 'gsid', 'nsfw', 'hide', 'id', 'failed'];
1013
1014                 $old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
1015                 $do_insert = !DBA::isResult($old_gcontact);
1016                 if ($do_insert) {
1017                         $old_gcontact = [];
1018                 }
1019
1020                 $gcontact = [];
1021
1022                 // These fields are identical in both contact and gcontact
1023                 $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'gsid',
1024                         'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated', 'failed'];
1025
1026                 foreach ($fields as $field) {
1027                         $gcontact[$field] = $contact[$field];
1028                 }
1029
1030                 // These fields are having different names but the same content
1031                 $gcontact['server_url'] = $contact['baseurl'] ?? ''; // "baseurl" can be null, "server_url" not
1032                 $gcontact['nsfw'] = $contact['sensitive'];
1033                 $gcontact['hide'] = $contact['unsearchable'];
1034                 $gcontact['archived'] = $contact['archive'];
1035                 $gcontact['archive_date'] = $contact['term-date'];
1036                 $gcontact['birthday'] = $contact['bd'];
1037                 $gcontact['photo'] = $contact['avatar'];
1038                 $gcontact['last_contact'] = $contact['success_update'];
1039                 $gcontact['last_failure'] = $contact['failure_update'];
1040                 $gcontact['community'] = ($contact['forum'] || $contact['prv']);
1041
1042                 foreach (['last_contact', 'last_failure', 'updated'] as $field) {
1043                         if (!empty($old_gcontact[$field]) && ($old_gcontact[$field] >= $gcontact[$field])) {
1044                                 unset($gcontact[$field]);
1045                         }
1046                 }
1047
1048                 if (!$gcontact['archived']) {
1049                         $gcontact['archive_date'] = DBA::NULL_DATETIME;
1050                 }
1051
1052                 if (!empty($old_gcontact['created']) && ($old_gcontact['created'] > DBA::NULL_DATETIME)
1053                         && ($old_gcontact['created'] <= $gcontact['created'])) {
1054                         unset($gcontact['created']);
1055                 }
1056
1057                 if (empty($gcontact['birthday']) && ($gcontact['birthday'] <= DBA::NULL_DATETIME)) {
1058                         unset($gcontact['birthday']);
1059                 }
1060
1061                 if (empty($old_gcontact['generation']) || ($old_gcontact['generation'] > 2)) {
1062                         $gcontact['generation'] = 2; // We fetched the data directly from the other server
1063                 }
1064
1065                 if (!$do_insert) {
1066                         DBA::update('gcontact', $gcontact, ['nurl' => $contact['nurl']], $old_gcontact);
1067                         return $old_gcontact['id'];
1068                 } elseif (!$gcontact['archived']) {
1069                         DBA::insert('gcontact', $gcontact);
1070                         return DBA::lastInsertId();
1071                 }
1072         }
1073
1074         /**
1075          * Updates the gcontact entry from probe
1076          *
1077          * @param string  $url   profile link
1078          * @param boolean $force Optional forcing of network probing (otherwise we use the cached data)
1079          *
1080          * @return boolean 'true' when contact had been updated
1081          *
1082          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1083          * @throws \ImagickException
1084          */
1085         public static function updateFromProbe($url, $force = false)
1086         {
1087                 $data = Probe::uri($url, $force);
1088
1089                 if (in_array($data['network'], [Protocol::PHANTOM])) {
1090                         $fields = ['failed' => true, 'last_failure' => DateTimeFormat::utcNow()];
1091                         DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1092                         Logger::info('Invalid network for contact', ['url' => $data['url'], 'callstack' => System::callstack()]);
1093                         return false;
1094                 }
1095
1096                 $data['server_url'] = $data['baseurl'];
1097                 $data['failed'] = false;
1098
1099                 self::update($data);
1100
1101                 // Set the date of the latest post
1102                 self::setLastUpdate($data, $force);
1103
1104                 return true;
1105         }
1106
1107         /**
1108          * Update the gcontact entry for a given user id
1109          *
1110          * @param int $uid User ID
1111          * @return bool
1112          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1113          * @throws \ImagickException
1114          */
1115         public static function updateForUser($uid)
1116         {
1117                 $profile = Profile::getByUID($uid);
1118                 if (empty($profile)) {
1119                         Logger::error('Cannot find profile', ['uid' => $uid]);
1120                         return false;
1121                 }
1122
1123                 $user = User::getOwnerDataById($uid);
1124                 if (empty($user)) {
1125                         Logger::error('Cannot find user', ['uid' => $uid]);
1126                         return false;
1127                 }
1128
1129                 $userdata = array_merge($profile, $user);
1130
1131                 $location = Profile::formatLocation(
1132                         ['locality' => $userdata['locality'], 'region' => $userdata['region'], 'country-name' => $userdata['country-name']]
1133                 );
1134
1135                 $gcontact = ['name' => $userdata['name'], 'location' => $location, 'about' => $userdata['about'],
1136                                 'keywords' => $userdata['pub_keywords'],
1137                                 'birthday' => $userdata['dob'], 'photo' => $userdata['photo'],
1138                                 "notify" => $userdata['notify'], 'url' => $userdata['url'],
1139                                 "hide" => !$userdata['net-publish'],
1140                                 'nick' => $userdata['nickname'], 'addr' => $userdata['addr'],
1141                                 "connect" => $userdata['addr'], "server_url" => DI::baseUrl(),
1142                                 "generation" => 1, 'network' => Protocol::DFRN];
1143
1144                 self::update($gcontact);
1145         }
1146
1147         /**
1148          * Get the basepath for a given contact link
1149          *
1150          * @param string $url The gcontact link
1151          * @param boolean $dont_update Don't update the contact
1152          *
1153          * @return string basepath
1154          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1155          * @throws \ImagickException
1156          */
1157         public static function getBasepath($url, $dont_update = false)
1158         {
1159                 $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
1160                 if (!empty($gcontact['server_url'])) {
1161                         return $gcontact['server_url'];
1162                 } elseif ($dont_update) {
1163                         return '';
1164                 }
1165
1166                 self::updateFromProbe($url, true);
1167
1168                 // Fetch the result
1169                 $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
1170                 if (empty($gcontact['server_url'])) {
1171                         Logger::info('No baseurl for gcontact', ['url' => $url]);
1172                         return '';
1173                 }
1174
1175                 Logger::info('Found baseurl for gcontact', ['url' => $url, 'baseurl' => $gcontact['server_url']]);
1176                 return $gcontact['server_url'];
1177         }
1178
1179         /**
1180          * Fetches users of given GNU Social server
1181          *
1182          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
1183          *
1184          * @param string $server Server address
1185          * @return bool
1186          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1187          * @throws \ImagickException
1188          */
1189         public static function fetchGsUsers($server)
1190         {
1191                 Logger::info('Fetching users from GNU Social server', ['server' => $server]);
1192
1193                 $url = $server . '/main/statistics';
1194
1195                 $curlResult = DI::httpRequest()->get($url);
1196                 if (!$curlResult->isSuccess()) {
1197                         return false;
1198                 }
1199
1200                 $statistics = json_decode($curlResult->getBody());
1201
1202                 if (!empty($statistics->config->instance_address)) {
1203                         if (!empty($statistics->config->instance_with_ssl)) {
1204                                 $server = 'https://';
1205                         } else {
1206                                 $server = 'http://';
1207                         }
1208
1209                         $server .= $statistics->config->instance_address;
1210
1211                         $hostname = $statistics->config->instance_address;
1212                 } elseif (!empty($statistics->instance_address)) {
1213                         if (!empty($statistics->instance_with_ssl)) {
1214                                 $server = 'https://';
1215                         } else {
1216                                 $server = 'http://';
1217                         }
1218
1219                         $server .= $statistics->instance_address;
1220
1221                         $hostname = $statistics->instance_address;
1222                 }
1223
1224                 if (!empty($statistics->users)) {
1225                         foreach ($statistics->users as $nick => $user) {
1226                                 $profile_url = $server . '/' . $user->nickname;
1227
1228                                 $contact = ['url' => $profile_url,
1229                                                 'name' => $user->fullname,
1230                                                 'addr' => $user->nickname . '@' . $hostname,
1231                                                 'nick' => $user->nickname,
1232                                                 "network" => Protocol::OSTATUS,
1233                                                 'photo' => DI::baseUrl() . '/images/person-300.jpg'];
1234
1235                                 if (isset($user->bio)) {
1236                                         $contact['about'] = $user->bio;
1237                                 }
1238
1239                                 self::getId($contact);
1240                         }
1241                 }
1242         }
1243
1244         /**
1245          * Asking GNU Social server on a regular base for their user data
1246          *
1247          * @return void
1248          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1249          * @throws \ImagickException
1250          */
1251         public static function discoverGsUsers()
1252         {
1253                 $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
1254
1255                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1256
1257                 $r = DBA::select('gserver', ['nurl', 'url'], [
1258                         '`network` = ?
1259                         AND NOT `failed`
1260                         AND `last_poco_query` < ?',
1261                         Protocol::OSTATUS,
1262                         $last_update
1263                 ], [
1264                         'limit' => 5,
1265                         'order' => ['RAND()']
1266                 ]);
1267
1268                 if (!DBA::isResult($r)) {
1269                         return;
1270                 }
1271
1272                 foreach ($r as $server) {
1273                         self::fetchGsUsers($server['url']);
1274                         DBA::update('gserver', ['last_poco_query' => DateTimeFormat::utcNow()], ['nurl' => $server['nurl']]);
1275                 }
1276         }
1277
1278         /**
1279          * Returns a random, global contact of the current node
1280          *
1281          * @return string The profile URL
1282          * @throws Exception
1283          */
1284         public static function getRandomUrl()
1285         {
1286                 $r = DBA::selectFirst('gcontact', ['url'], [
1287                         '`network` = ?
1288                         AND NOT `failed`
1289                         AND `updated` > ?',
1290                         Protocol::DFRN,
1291                         DateTimeFormat::utc('now - 1 month'),
1292                 ], ['order' => ['RAND()']]);
1293
1294                 if (DBA::isResult($r)) {
1295                         return $r['url'];
1296                 }
1297
1298                 return '';
1299         }
1300 }