src/Model/GContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/GlobalContact.php
   5  * @brief This file includes the GlobalContact class with directory related functions
   6  */
   7 namespace Friendica\Model;
   8
   9 use Exception;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\Logger;
  12 use Friendica\Core\Protocol;
  13 use Friendica\Core\System;
  14 use Friendica\Core\Worker;
  15 use Friendica\Database\DBA;
  16 use Friendica\Network\Probe;
  17 use Friendica\Protocol\PortableContact;
  18 use Friendica\Util\DateTimeFormat;
  19 use Friendica\Util\Network;
  20
  21 require_once 'include/dba.php';
  22
  23 /**
  24  * @brief This class handles GlobalContact related functions
  25  */
  26 class GContact
  27 {
  28         /**
  29          * @brief Search global contact table by nick or name
  30          *
  31          * @param string $search Name or nick
  32          * @param string $mode   Search mode (e.g. "community")
  33          *
  34          * @return array with search results
  35          */
  36         public static function searchByName($search, $mode = '')
  37         {
  38                 if (empty($search)) {
  39                         return [];
  40                 }
  41
  42                 // check supported networks
  43                 if (Config::get('system', 'diaspora_enabled')) {
  44                         $diaspora = Protocol::DIASPORA;
  45                 } else {
  46                         $diaspora = Protocol::DFRN;
  47                 }
  48
  49                 if (!Config::get('system', 'ostatus_disabled')) {
  50                         $ostatus = Protocol::OSTATUS;
  51                 } else {
  52                         $ostatus = Protocol::DFRN;
  53                 }
  54
  55                 // check if we search only communities or every contact
  56                 if ($mode === "community") {
  57                         $extra_sql = " AND `community`";
  58                 } else {
  59                         $extra_sql = "";
  60                 }
  61
  62                 $search .= "%";
  63
  64                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  65                         WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
  66                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  67                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  68                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  69                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
  70                 );
  71
  72                 $gcontacts = [];
  73                 while ($result = DBA::fetch($results)) {
  74                         $urlparts = parse_url($result["nurl"]);
  75
  76                         // Ignore results that look strange.
  77                         // For historic reasons the gcontact table does contain some garbage.
  78                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  79                                 continue;
  80                         }
  81
  82                         $gcontacts[] = Contact::getDetailsByURL($result["nurl"], local_user());
  83                 }
  84                 return $gcontacts;
  85         }
  86
  87         /**
  88          * @brief Link the gcontact entry with user, contact and global contact
  89          *
  90          * @param integer $gcid Global contact ID
  91          * @param integer $uid  User ID
  92          * @param integer $cid  Contact ID
  93          * @param integer $zcid Global Contact ID
  94          * @return void
  95          */
  96         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  97         {
  98                 if ($gcid <= 0) {
  99                         return;
 100                 }
 101
 102                 $condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
 103                 DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
 104         }
 105
 106         /**
 107          * @brief Sanitize the given gcontact data
 108          *
 109          * @param array $gcontact array with gcontact data
 110          * @throw Exception
 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          * @return array $gcontact
 119          */
 120         public static function sanitize($gcontact)
 121         {
 122                 if ($gcontact['url'] == "") {
 123                         throw new Exception('URL is empty');
 124                 }
 125
 126                 $urlparts = parse_url($gcontact['url']);
 127                 if (!isset($urlparts["scheme"])) {
 128                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 129                 }
 130
 131                 if (in_array($urlparts["host"], ["twitter.com", "identi.ca"])) {
 132                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 133                 }
 134
 135                 // Don't store the statusnet connector as network
 136                 // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
 137                 if ($gcontact['network'] == Protocol::STATUSNET) {
 138                         $gcontact['network'] = "";
 139                 }
 140
 141                 // Assure that there are no parameter fragments in the profile url
 142                 if (in_array($gcontact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 143                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 144                 }
 145
 146                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 147
 148                 // The global contacts should contain the original picture, not the cached one
 149                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 150                         $gcontact['photo'] = "";
 151                 }
 152
 153                 if (!isset($gcontact['network'])) {
 154                         $condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
 155                                 normalise_link($gcontact['url']), Protocol::STATUSNET];
 156                         $contact = DBA::selectFirst('contact', ['network'], $condition);
 157                         if (DBA::isResult($contact)) {
 158                                 $gcontact['network'] = $contact["network"];
 159                         }
 160
 161                         if (($gcontact['network'] == "") || ($gcontact['network'] == Protocol::OSTATUS)) {
 162                                 $condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
 163                                         $gcontact['url'], normalise_link($gcontact['url']), Protocol::STATUSNET];
 164                                 $contact = DBA::selectFirst('contact', ['network'], $condition);
 165                                 if (DBA::isResult($contact)) {
 166                                         $gcontact['network'] = $contact["network"];
 167                                 }
 168                         }
 169                 }
 170
 171                 $gcontact['server_url'] = '';
 172                 $gcontact['network'] = '';
 173
 174                 $fields = ['network', 'updated', 'server_url', 'url', 'addr'];
 175                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => normalise_link($gcontact['url'])]);
 176                 if (DBA::isResult($gcnt)) {
 177                         if (!isset($gcontact['network']) && ($gcnt["network"] != Protocol::STATUSNET)) {
 178                                 $gcontact['network'] = $gcnt["network"];
 179                         }
 180                         if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
 181                                 $gcontact['updated'] = $gcnt["updated"];
 182                         }
 183                         if (!isset($gcontact['server_url']) && (normalise_link($gcnt["server_url"]) != normalise_link($gcnt["url"]))) {
 184                                 $gcontact['server_url'] = $gcnt["server_url"];
 185                         }
 186                         if (!isset($gcontact['addr'])) {
 187                                 $gcontact['addr'] = $gcnt["addr"];
 188                         }
 189                 }
 190
 191                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 192                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 193                 ) {
 194                         $data = Probe::uri($gcontact['url']);
 195
 196                         if ($data["network"] == Protocol::PHANTOM) {
 197                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 198                         }
 199
 200                         $orig_profile = $gcontact['url'];
 201
 202                         $gcontact["server_url"] = $data["baseurl"];
 203
 204                         $gcontact = array_merge($gcontact, $data);
 205
 206                         if ($alternate && ($gcontact['network'] == Protocol::OSTATUS)) {
 207                                 // Delete the old entry - if it exists
 208                                 if (DBA::exists('gcontact', ['nurl' => normalise_link($orig_profile)])) {
 209                                         DBA::delete('gcontact', ['nurl' => normalise_link($orig_profile)]);
 210                                 }
 211                         }
 212                 }
 213
 214                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 215                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 216                 }
 217
 218                 if (!in_array($gcontact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA])) {
 219                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 220                 }
 221
 222                 if (!isset($gcontact['server_url'])) {
 223                         // We check the server url to be sure that it is a real one
 224                         $server_url = PortableContact::detectServer($gcontact['url']);
 225
 226                         // We are now sure that it is a correct URL. So we use it in the future
 227                         if ($server_url != "") {
 228                                 $gcontact['server_url'] = $server_url;
 229                         }
 230                 }
 231
 232                 // The server URL doesn't seem to be valid, so we don't store it.
 233                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 234                         $gcontact['server_url'] = "";
 235                 }
 236
 237                 return $gcontact;
 238         }
 239
 240         /**
 241          * @param integer $uid id
 242          * @param integer $cid id
 243          * @return integer
 244          */
 245         public static function countCommonFriends($uid, $cid)
 246         {
 247                 $r = q(
 248                         "SELECT count(*) as `total`
 249                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 250                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 251                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 252                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 253                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 254                         intval($cid),
 255                         intval($uid),
 256                         intval($uid),
 257                         intval($cid)
 258                 );
 259
 260                 // Logger::log("countCommonFriends: $uid $cid {$r[0]['total']}");
 261                 if (DBA::isResult($r)) {
 262                         return $r[0]['total'];
 263                 }
 264                 return 0;
 265         }
 266
 267         /**
 268          * @param integer $uid  id
 269          * @param integer $zcid zcid
 270          * @return integer
 271          */
 272         public static function countCommonFriendsZcid($uid, $zcid)
 273         {
 274                 $r = q(
 275                         "SELECT count(*) as `total`
 276                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 277                         where `glink`.`zcid` = %d
 278                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 279                         intval($zcid),
 280                         intval($uid)
 281                 );
 282
 283                 if (DBA::isResult($r)) {
 284                         return $r[0]['total'];
 285                 }
 286
 287                 return 0;
 288         }
 289
 290         /**
 291          * @param integer $uid     user
 292          * @param integer $cid     cid
 293          * @param integer $start   optional, default 0
 294          * @param integer $limit   optional, default 9999
 295          * @param boolean $shuffle optional, default false
 296          * @return object
 297          */
 298         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 299         {
 300                 if ($shuffle) {
 301                         $sql_extra = " order by rand() ";
 302                 } else {
 303                         $sql_extra = " order by `gcontact`.`name` asc ";
 304                 }
 305
 306                 $r = q(
 307                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 308                         FROM `glink`
 309                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 310                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 311                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 312                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 313                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 314                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 315                                 $sql_extra LIMIT %d, %d",
 316                         intval($cid),
 317                         intval($uid),
 318                         intval($uid),
 319                         intval($cid),
 320                         intval($start),
 321                         intval($limit)
 322                 );
 323
 324                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 325                 return $r;
 326         }
 327
 328         /**
 329          * @param integer $uid     user
 330          * @param integer $zcid    zcid
 331          * @param integer $start   optional, default 0
 332          * @param integer $limit   optional, default 9999
 333          * @param boolean $shuffle optional, default false
 334          * @return object
 335          */
 336         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 337         {
 338                 if ($shuffle) {
 339                         $sql_extra = " order by rand() ";
 340                 } else {
 341                         $sql_extra = " order by `gcontact`.`name` asc ";
 342                 }
 343
 344                 $r = q(
 345                         "SELECT `gcontact`.*
 346                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 347                         where `glink`.`zcid` = %d
 348                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 349                         $sql_extra limit %d, %d",
 350                         intval($zcid),
 351                         intval($uid),
 352                         intval($start),
 353                         intval($limit)
 354                 );
 355
 356                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 357                 return $r;
 358         }
 359
 360         /**
 361          * @param integer $uid user
 362          * @param integer $cid cid
 363          * @return integer
 364          */
 365         public static function countAllFriends($uid, $cid)
 366         {
 367                 $r = q(
 368                         "SELECT count(*) as `total`
 369                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 370                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 371                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 372                         intval($cid),
 373                         intval($uid)
 374                 );
 375
 376                 if (DBA::isResult($r)) {
 377                         return $r[0]['total'];
 378                 }
 379
 380                 return 0;
 381         }
 382
 383         /**
 384          * @param integer $uid   user
 385          * @param integer $cid   cid
 386          * @param integer $start optional, default 0
 387          * @param integer $limit optional, default 80
 388          * @return array
 389          */
 390         public static function allFriends($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 object  $uid   user
 413          * @param integer $start optional, default 0
 414          * @param integer $limit optional, default 80
 415          * @return array
 416          */
 417         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 418         {
 419                 if (!$uid) {
 420                         return [];
 421                 }
 422
 423                 /*
 424                 * Uncommented because the result of the queries are to big to store it in the cache.
 425                 * We need to decide if we want to change the db column type or if we want to delete it.
 426                 */
 427                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 428                 //if (!is_null($list)) {
 429                 //      return $list;
 430                 //}
 431
 432                 $network = [Protocol::DFRN];
 433
 434                 if (Config::get('system', 'diaspora_enabled')) {
 435                         $network[] = Protocol::DIASPORA;
 436                 }
 437
 438                 if (!Config::get('system', 'ostatus_disabled')) {
 439                         $network[] = Protocol::OSTATUS;
 440                 }
 441
 442                 $sql_network = implode("', '", $network);
 443                 $sql_network = "'".$sql_network."'";
 444
 445                 /// @todo This query is really slow
 446                 // By now we cache the data for five minutes
 447                 $r = q(
 448                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 449                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 450                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 451                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 452                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 453                         AND `gcontact`.`updated` >= '%s'
 454                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 455                         AND `gcontact`.`network` IN (%s)
 456                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 457                         intval($uid),
 458                         intval($uid),
 459                         intval($uid),
 460                         intval($uid),
 461                         DBA::NULL_DATETIME,
 462                         $sql_network,
 463                         intval($start),
 464                         intval($limit)
 465                 );
 466
 467                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 468                         /*
 469                         * Uncommented because the result of the queries are to big to store it in the cache.
 470                         * We need to decide if we want to change the db column type or if we want to delete it.
 471                         */
 472                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, Cache::FIVE_MINUTES);
 473
 474                         return $r;
 475                 }
 476
 477                 $r2 = q(
 478                         "SELECT gcontact.* FROM gcontact
 479                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 480                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 481                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 482                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 483                         AND `gcontact`.`updated` >= '%s'
 484                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 485                         AND `gcontact`.`network` IN (%s)
 486                         ORDER BY rand() LIMIT %d, %d",
 487                         intval($uid),
 488                         intval($uid),
 489                         intval($uid),
 490                         DBA::NULL_DATETIME,
 491                         $sql_network,
 492                         intval($start),
 493                         intval($limit)
 494                 );
 495
 496                 $list = [];
 497                 foreach ($r2 as $suggestion) {
 498                         $list[$suggestion["nurl"]] = $suggestion;
 499                 }
 500
 501                 foreach ($r as $suggestion) {
 502                         $list[$suggestion["nurl"]] = $suggestion;
 503                 }
 504
 505                 while (sizeof($list) > ($limit)) {
 506                         array_pop($list);
 507                 }
 508
 509                 /*
 510                 * Uncommented because the result of the queries are to big to store it in the cache.
 511                 * We need to decide if we want to change the db column type or if we want to delete it.
 512                 */
 513                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, Cache::FIVE_MINUTES);
 514                 return $list;
 515         }
 516
 517         /**
 518          * @return void
 519          */
 520         public static function updateSuggestions()
 521         {
 522                 $a = get_app();
 523
 524                 $done = [];
 525
 526                 /// @TODO Check if it is really neccessary to poll the own server
 527                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 528
 529                 $done[] = System::baseUrl() . '/poco';
 530
 531                 if (strlen(Config::get('system', 'directory'))) {
 532                         $x = Network::fetchUrl(get_server()."/pubsites");
 533                         if (!empty($x)) {
 534                                 $j = json_decode($x);
 535                                 if (!empty($j->entries)) {
 536                                         foreach ($j->entries as $entry) {
 537                                                 PortableContact::checkServer($entry->url);
 538
 539                                                 $url = $entry->url . '/poco';
 540                                                 if (!in_array($url, $done)) {
 541                                                         PortableContact::loadWorker(0, 0, 0, $url);
 542                                                         $done[] = $url;
 543                                                 }
 544                                         }
 545                                 }
 546                         }
 547                 }
 548
 549                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 550                 $r = q(
 551                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 552                         DBA::escape(Protocol::DFRN),
 553                         DBA::escape(Protocol::DIASPORA)
 554                 );
 555
 556                 if (DBA::isResult($r)) {
 557                         foreach ($r as $rr) {
 558                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 559                                 if (! in_array($base, $done)) {
 560                                         PortableContact::loadWorker(0, 0, 0, $base);
 561                                 }
 562                         }
 563                 }
 564         }
 565
 566         /**
 567          * @brief Removes unwanted parts from a contact url
 568          *
 569          * @param string $url Contact url
 570          *
 571          * @return string Contact url with the wanted parts
 572          */
 573         public static function cleanContactUrl($url)
 574         {
 575                 $parts = parse_url($url);
 576
 577                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 578                         return $url;
 579                 }
 580
 581                 $new_url = $parts["scheme"]."://".$parts["host"];
 582
 583                 if (isset($parts["port"])) {
 584                         $new_url .= ":".$parts["port"];
 585                 }
 586
 587                 if (isset($parts["path"])) {
 588                         $new_url .= $parts["path"];
 589                 }
 590
 591                 if ($new_url != $url) {
 592                         Logger::log("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), Logger::DEBUG);
 593                 }
 594
 595                 return $new_url;
 596         }
 597
 598         /**
 599          * @brief Replace alternate OStatus user format with the primary one
 600          *
 601          * @param array $contact contact array (called by reference)
 602          * @return void
 603          */
 604         public static function fixAlternateContactAddress(&$contact)
 605         {
 606                 if (($contact["network"] == Protocol::OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 607                         $data = Probe::uri($contact["url"]);
 608                         if ($contact["network"] == Protocol::OSTATUS) {
 609                                 Logger::log("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 610                                 $contact["url"] = $data["url"];
 611                                 $contact["addr"] = $data["addr"];
 612                                 $contact["alias"] = $data["alias"];
 613                                 $contact["server_url"] = $data["baseurl"];
 614                         }
 615                 }
 616         }
 617
 618         /**
 619          * @brief Fetch the gcontact id, add an entry if not existed
 620          *
 621          * @param array $contact contact array
 622          *
 623          * @return bool|int Returns false if not found, integer if contact was found
 624          */
 625         public static function getId($contact)
 626         {
 627                 $gcontact_id = 0;
 628                 $doprobing = false;
 629                 $last_failure_str = '';
 630                 $last_contact_str = '';
 631
 632                 if (empty($contact["network"])) {
 633                         Logger::log("Empty network for contact url ".$contact["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 634                         return false;
 635                 }
 636
 637                 if (in_array($contact["network"], [Protocol::PHANTOM])) {
 638                         Logger::log("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 639                         return false;
 640                 }
 641
 642                 if ($contact["network"] == Protocol::STATUSNET) {
 643                         $contact["network"] = Protocol::OSTATUS;
 644                 }
 645
 646                 // All new contacts are hidden by default
 647                 if (!isset($contact["hide"])) {
 648                         $contact["hide"] = true;
 649                 }
 650
 651                 // Replace alternate OStatus user format with the primary one
 652                 self::fixAlternateContactAddress($contact);
 653
 654                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 655                 if (in_array($contact["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 656                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 657                 }
 658
 659                 DBA::lock('gcontact');
 660                 $fields = ['id', 'last_contact', 'last_failure', 'network'];
 661                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => normalise_link($contact["url"])]);
 662                 if (DBA::isResult($gcnt)) {
 663                         $gcontact_id = $gcnt["id"];
 664
 665                         // Update every 90 days
 666                         if (in_array($gcnt["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 667                                 $last_failure_str = $gcnt["last_failure"];
 668                                 $last_failure = strtotime($gcnt["last_failure"]);
 669                                 $last_contact_str = $gcnt["last_contact"];
 670                                 $last_contact = strtotime($gcnt["last_contact"]);
 671                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 672                         }
 673                 } else {
 674                         $contact['location'] = defaults($contact, 'location', '');
 675                         $contact['about'] = defaults($contact, 'about', '');
 676                         $contact['generation'] = defaults($contact, 'generation', 0);
 677
 678                         q(
 679                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 680                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 681                                 DBA::escape($contact["name"]),
 682                                 DBA::escape($contact["nick"]),
 683                                 DBA::escape($contact["addr"]),
 684                                 DBA::escape($contact["network"]),
 685                                 DBA::escape($contact["url"]),
 686                                 DBA::escape(normalise_link($contact["url"])),
 687                                 DBA::escape($contact["photo"]),
 688                                 DBA::escape(DateTimeFormat::utcNow()),
 689                                 DBA::escape(DateTimeFormat::utcNow()),
 690                                 DBA::escape($contact["location"]),
 691                                 DBA::escape($contact["about"]),
 692                                 intval($contact["hide"]),
 693                                 intval($contact["generation"])
 694                         );
 695
 696                         $condition = ['nurl' => normalise_link($contact["url"])];
 697                         $cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
 698                         if (DBA::isResult($cnt)) {
 699                                 $gcontact_id = $cnt["id"];
 700                                 $doprobing = in_array($cnt["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""]);
 701                         }
 702                 }
 703                 DBA::unlock();
 704
 705                 if ($doprobing) {
 706                         Logger::log("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], Logger::DEBUG);
 707                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 708                 }
 709
 710                 return $gcontact_id;
 711         }
 712
 713         /**
 714          * @brief Updates the gcontact table from a given array
 715          *
 716          * @param array $contact contact array
 717          *
 718          * @return bool|int Returns false if not found, integer if contact was found
 719          */
 720         public static function update($contact)
 721         {
 722                 // Check for invalid "contact-type" value
 723                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 724                         $contact['contact-type'] = 0;
 725                 }
 726
 727                 /// @todo update contact table as well
 728
 729                 $gcontact_id = self::getId($contact);
 730
 731                 if (!$gcontact_id) {
 732                         return false;
 733                 }
 734
 735                 $public_contact = q(
 736                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 737                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 738                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 739                         intval($gcontact_id)
 740                 );
 741
 742                 // Get all field names
 743                 $fields = [];
 744                 foreach ($public_contact[0] as $field => $data) {
 745                         $fields[$field] = $data;
 746                 }
 747
 748                 unset($fields["url"]);
 749                 unset($fields["updated"]);
 750                 unset($fields["hide"]);
 751
 752                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 753                 // This value is still transmitted via poco.
 754                 if (!empty($contact["keywords"]) && ($contact["keywords"] == "0")) {
 755                         unset($contact["keywords"]);
 756                 }
 757
 758                 if (!empty($public_contact[0]["keywords"]) && ($public_contact[0]["keywords"] == "0")) {
 759                         $public_contact[0]["keywords"] = "";
 760                 }
 761
 762                 // assign all unassigned fields from the database entry
 763                 foreach ($fields as $field => $data) {
 764                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 765                                 $contact[$field] = $public_contact[0][$field];
 766                         }
 767                 }
 768
 769                 if (!isset($contact["hide"])) {
 770                         $contact["hide"] = $public_contact[0]["hide"];
 771                 }
 772
 773                 $fields["hide"] = $public_contact[0]["hide"];
 774
 775                 if ($contact["network"] == Protocol::STATUSNET) {
 776                         $contact["network"] = Protocol::OSTATUS;
 777                 }
 778
 779                 // Replace alternate OStatus user format with the primary one
 780                 self::fixAlternateContactAddress($contact);
 781
 782                 if (!isset($contact["updated"])) {
 783                         $contact["updated"] = DateTimeFormat::utcNow();
 784                 }
 785
 786                 if ($contact["network"] == Protocol::TWITTER) {
 787                         $contact["server_url"] = 'http://twitter.com';
 788                 }
 789
 790                 if ($contact["server_url"] == "") {
 791                         $data = Probe::uri($contact["url"]);
 792                         if ($data["network"] != Protocol::PHANTOM) {
 793                                 $contact["server_url"] = $data['baseurl'];
 794                         }
 795                 } else {
 796                         $contact["server_url"] = normalise_link($contact["server_url"]);
 797                 }
 798
 799                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 800                         $hostname = str_replace("http://", "", $contact["server_url"]);
 801                         $contact["addr"] = $contact["nick"]."@".$hostname;
 802                 }
 803
 804                 // Check if any field changed
 805                 $update = false;
 806                 unset($fields["generation"]);
 807
 808                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 809                         foreach ($fields as $field => $data) {
 810                                 if ($contact[$field] != $public_contact[0][$field]) {
 811                                         Logger::log("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", Logger::DEBUG);
 812                                         $update = true;
 813                                 }
 814                         }
 815
 816                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 817                                 Logger::log("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", Logger::DEBUG);
 818                                 $update = true;
 819                         }
 820                 }
 821
 822                 if ($update) {
 823                         Logger::log("Update gcontact for ".$contact["url"], Logger::DEBUG);
 824                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 825                                         normalise_link($contact["url"]), $contact["generation"]];
 826                         $contact["updated"] = DateTimeFormat::utc($contact["updated"]);
 827
 828                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 829                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 830                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 831                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 832                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 833                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 834                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 835                                         'location' => $contact['location'], 'about' => $contact['about'],
 836                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 837                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 838
 839                         DBA::update('gcontact', $updated, $condition, $fields);
 840
 841                         // Now update the contact entry with the user id "0" as well.
 842                         // This is used for the shadow copies of public items.
 843                         /// @todo Check if we really should do this.
 844                         // The quality of the gcontact table is mostly lower than the public contact
 845                         $public_contact = DBA::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 846                         if (DBA::isResult($public_contact)) {
 847                                 Logger::log("Update public contact ".$public_contact["id"], Logger::DEBUG);
 848
 849                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 850
 851                                 $fields = ['name', 'nick', 'addr',
 852                                                 'network', 'bd', 'gender',
 853                                                 'keywords', 'alias', 'contact-type',
 854                                                 'url', 'location', 'about'];
 855                                 $old_contact = DBA::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 856
 857                                 // Update it with the current values
 858                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 859                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 860                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 861                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 862                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 863                                                 'location' => $contact['location'], 'about' => $contact['about']];
 864
 865                                 // Don't update the birthday field if not set or invalid
 866                                 if (empty($contact['birthday']) || ($contact['birthday'] < '0001-01-01')) {
 867                                         unset($fields['bd']);
 868                                 }
 869
 870
 871                                 DBA::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 872                         }
 873                 }
 874
 875                 return $gcontact_id;
 876         }
 877
 878         /**
 879          * @brief Updates the gcontact entry from probe
 880          *
 881          * @param string $url profile link
 882          * @return void
 883          */
 884         public static function updateFromProbe($url)
 885         {
 886                 $data = Probe::uri($url);
 887
 888                 if (in_array($data["network"], [Protocol::PHANTOM])) {
 889                         Logger::log("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 890                         return;
 891                 }
 892
 893                 $data["server_url"] = $data["baseurl"];
 894
 895                 self::update($data);
 896         }
 897
 898         /**
 899          * @brief Update the gcontact entry for a given user id
 900          *
 901          * @param int $uid User ID
 902          * @return void
 903          */
 904         public static function updateForUser($uid)
 905         {
 906                 $r = q(
 907                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 908                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 909                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 910                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 911                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 912                         FROM `profile`
 913                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 914                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 915                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 916                         intval($uid)
 917                 );
 918
 919                 if (!DBA::isResult($r)) {
 920                         Logger::log('Cannot find user with uid=' . $uid, Logger::INFO);
 921                         return false;
 922                 }
 923
 924                 $location = Profile::formatLocation(
 925                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 926                 );
 927
 928                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 929                 if ($r[0]["addr"] != "") {
 930                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 931                 } else {
 932                         $addr = $r[0]["addr"];
 933                 }
 934
 935                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 936                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 937                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 938                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 939                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 940                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 941                                 "connect" => $addr, "server_url" => System::baseUrl(),
 942                                 "generation" => 1, "network" => Protocol::DFRN];
 943
 944                 self::update($gcontact);
 945         }
 946
 947         /**
 948          * @brief Fetches users of given GNU Social server
 949          *
 950          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 951          *
 952          * @param string $server Server address
 953          * @return void
 954          */
 955         public static function fetchGsUsers($server)
 956         {
 957                 Logger::log("Fetching users from GNU Social server ".$server, Logger::DEBUG);
 958
 959                 $url = $server."/main/statistics";
 960
 961                 $curlResult = Network::curl($url);
 962                 if (!$curlResult->isSuccess()) {
 963                         return false;
 964                 }
 965
 966                 $statistics = json_decode($curlResult->getBody());
 967
 968                 if (!empty($statistics->config)) {
 969                         if ($statistics->config->instance_with_ssl) {
 970                                 $server = "https://";
 971                         } else {
 972                                 $server = "http://";
 973                         }
 974
 975                         $server .= $statistics->config->instance_address;
 976
 977                         $hostname = $statistics->config->instance_address;
 978                 } elseif (!empty($statistics)) {
 979                         if ($statistics->instance_with_ssl) {
 980                                 $server = "https://";
 981                         } else {
 982                                 $server = "http://";
 983                         }
 984
 985                         $server .= $statistics->instance_address;
 986
 987                         $hostname = $statistics->instance_address;
 988                 }
 989
 990                 if (!empty($statistics->users)) {
 991                         foreach ($statistics->users as $nick => $user) {
 992                                 $profile_url = $server."/".$user->nickname;
 993
 994                                 $contact = ["url" => $profile_url,
 995                                                 "name" => $user->fullname,
 996                                                 "addr" => $user->nickname."@".$hostname,
 997                                                 "nick" => $user->nickname,
 998                                                 "network" => Protocol::OSTATUS,
 999                                                 "photo" => System::baseUrl()."/images/person-300.jpg"];
1000
1001                                 if (isset($user->bio)) {
1002                                         $contact["about"] = $user->bio;
1003                                 }
1004
1005                                 self::getId($contact);
1006                         }
1007                 }
1008         }
1009
1010         /**
1011          * @brief Asking GNU Social server on a regular base for their user data
1012          * @return void
1013          */
1014         public static function discoverGsUsers()
1015         {
1016                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1017
1018                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1019
1020                 $r = q(
1021                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1022                         DBA::escape(Protocol::OSTATUS),
1023                         DBA::escape($last_update)
1024                 );
1025
1026                 if (!DBA::isResult($r)) {
1027                         return;
1028                 }
1029
1030                 foreach ($r as $server) {
1031                         self::fetchGsUsers($server["url"]);
1032                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", DBA::escape(DateTimeFormat::utcNow()), DBA::escape($server["nurl"]));
1033                 }
1034         }
1035
1036         /**
1037          * @return string
1038          */
1039         public static function getRandomUrl()
1040         {
1041                 $r = q(
1042                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1043                                         AND `last_contact` >= `last_failure`
1044                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1045                                 ORDER BY rand() LIMIT 1",
1046                         DBA::escape(Protocol::DFRN)
1047                 );
1048
1049                 if (DBA::isResult($r)) {
1050                         return dirname($r[0]['url']);
1051                 }
1052
1053                 return '';
1054         }
1055 }