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 Friendica\Core\Config;
  10 use Friendica\Core\System;
  11 use Friendica\Core\Worker;
  12 use Friendica\Database\DBM;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Profile;
  15 use Friendica\Network\Probe;
  16 use Friendica\Protocol\PortableContact;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Network;
  19 use dba;
  20 use Exception;
  21
  22 require_once 'include/dba.php';
  23
  24 /**
  25  * @brief This class handles GlobalContact related functions
  26  */
  27 class GContact
  28 {
  29         /**
  30          * @brief Search global contact table by nick or name
  31          *
  32          * @param string $search Name or nick
  33          * @param string $mode   Search mode (e.g. "community")
  34          *
  35          * @return array with search results
  36          */
  37         public static function searchByName($search, $mode = '')
  38         {
  39                 if (empty($search)) {
  40                         return [];
  41                 }
  42
  43                 // check supported networks
  44                 if (Config::get('system', 'diaspora_enabled')) {
  45                         $diaspora = NETWORK_DIASPORA;
  46                 } else {
  47                         $diaspora = NETWORK_DFRN;
  48                 }
  49
  50                 if (!Config::get('system', 'ostatus_disabled')) {
  51                         $ostatus = NETWORK_OSTATUS;
  52                 } else {
  53                         $ostatus = NETWORK_DFRN;
  54                 }
  55
  56                 // check if we search only communities or every contact
  57                 if ($mode === "community") {
  58                         $extra_sql = " AND `community`";
  59                 } else {
  60                         $extra_sql = "";
  61                 }
  62
  63                 $search .= "%";
  64
  65                 $results = dba::p("SELECT `nurl` FROM `gcontact`
  66                         WHERE NOT `hide` AND `network` IN (?, ?, ?) AND
  67                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  68                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  69                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  70                         NETWORK_DFRN, $ostatus, $diaspora, $search, $search, $search
  71                 );
  72
  73                 $gcontacts = [];
  74                 while ($result = dba::fetch($results)) {
  75                         $urlparts = parse_url($result["nurl"]);
  76
  77                         // Ignore results that look strange.
  78                         // For historic reasons the gcontact table does contain some garbage.
  79                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  80                                 continue;
  81                         }
  82
  83                         $gcontacts[] = Contact::getDetailsByURL($result["nurl"], local_user());
  84                 }
  85                 return $gcontacts;
  86         }
  87
  88         /**
  89          * @brief Link the gcontact entry with user, contact and global contact
  90          *
  91          * @param integer $gcid Global contact ID
  92          * @param integer $uid  User ID
  93          * @param integer $cid  Contact ID
  94          * @param integer $zcid Global Contact ID
  95          * @return void
  96          */
  97         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  98         {
  99                 if ($gcid <= 0) {
 100                         return;
 101                 }
 102
 103                 $r = q(
 104                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 105                         intval($cid),
 106                         intval($uid),
 107                         intval($gcid),
 108                         intval($zcid)
 109                 );
 110
 111                 if (!DBM::is_result($r)) {
 112                         q(
 113                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 114                                 intval($cid),
 115                                 intval($uid),
 116                                 intval($gcid),
 117                                 intval($zcid),
 118                                 dbesc(DateTimeFormat::utcNow())
 119                         );
 120                 } else {
 121                         q(
 122                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 123                                 dbesc(DateTimeFormat::utcNow()),
 124                                 intval($cid),
 125                                 intval($uid),
 126                                 intval($gcid),
 127                                 intval($zcid)
 128                         );
 129                 }
 130         }
 131
 132         /**
 133          * @brief Sanitize the given gcontact data
 134          *
 135          * @param array $gcontact array with gcontact data
 136          * @throw Exception
 137          *
 138          * Generation:
 139          *  0: No definition
 140          *  1: Profiles on this server
 141          *  2: Contacts of profiles on this server
 142          *  3: Contacts of contacts of profiles on this server
 143          *  4: ...
 144          * @return array $gcontact
 145          */
 146         public static function sanitize($gcontact)
 147         {
 148                 if ($gcontact['url'] == "") {
 149                         throw new Exception('URL is empty');
 150                 }
 151
 152                 $urlparts = parse_url($gcontact['url']);
 153                 if (!isset($urlparts["scheme"])) {
 154                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 155                 }
 156
 157                 if (in_array($urlparts["host"], ["www.facebook.com", "facebook.com", "twitter.com", "identi.ca", "alpha.app.net"])) {
 158                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 159                 }
 160
 161                 // Don't store the statusnet connector as network
 162                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 163                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 164                         $gcontact['network'] = "";
 165                 }
 166
 167                 // Assure that there are no parameter fragments in the profile url
 168                 if (in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 169                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 170                 }
 171
 172                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 173
 174                 // The global contacts should contain the original picture, not the cached one
 175                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 176                         $gcontact['photo'] = "";
 177                 }
 178
 179                 if (!isset($gcontact['network'])) {
 180                         $r = q(
 181                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 182                                 dbesc(normalise_link($gcontact['url'])),
 183                                 dbesc(NETWORK_STATUSNET)
 184                         );
 185                         if (DBM::is_result($r)) {
 186                                 $gcontact['network'] = $r[0]["network"];
 187                         }
 188
 189                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 190                                 $r = q(
 191                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 192                                         dbesc($gcontact['url']),
 193                                         dbesc(normalise_link($gcontact['url'])),
 194                                         dbesc(NETWORK_STATUSNET)
 195                                 );
 196                                 if (DBM::is_result($r)) {
 197                                         $gcontact['network'] = $r[0]["network"];
 198                                 }
 199                         }
 200                 }
 201
 202                 $gcontact['server_url'] = '';
 203                 $gcontact['network'] = '';
 204
 205                 $x = q(
 206                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 207                         dbesc(normalise_link($gcontact['url']))
 208                 );
 209
 210                 if (DBM::is_result($x)) {
 211                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 212                                 $gcontact['network'] = $x[0]["network"];
 213                         }
 214                         if ($gcontact['updated'] <= NULL_DATE) {
 215                                 $gcontact['updated'] = $x[0]["updated"];
 216                         }
 217                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 218                                 $gcontact['server_url'] = $x[0]["server_url"];
 219                         }
 220                         if (!isset($gcontact['addr'])) {
 221                                 $gcontact['addr'] = $x[0]["addr"];
 222                         }
 223                 }
 224
 225                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 226                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 227                 ) {
 228                         $data = Probe::uri($gcontact['url']);
 229
 230                         if ($data["network"] == NETWORK_PHANTOM) {
 231                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 232                         }
 233
 234                         $orig_profile = $gcontact['url'];
 235
 236                         $gcontact["server_url"] = $data["baseurl"];
 237
 238                         $gcontact = array_merge($gcontact, $data);
 239
 240                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 241                                 // Delete the old entry - if it exists
 242                                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 243                                 if (DBM::is_result($r)) {
 244                                         q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 245                                         q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 246                                 }
 247                         }
 248                 }
 249
 250                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 251                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 252                 }
 253
 254                 if (!in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA])) {
 255                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 256                 }
 257
 258                 if (!isset($gcontact['server_url'])) {
 259                         // We check the server url to be sure that it is a real one
 260                         $server_url = PortableContact::detectServer($gcontact['url']);
 261
 262                         // We are now sure that it is a correct URL. So we use it in the future
 263                         if ($server_url != "") {
 264                                 $gcontact['server_url'] = $server_url;
 265                         }
 266                 }
 267
 268                 // The server URL doesn't seem to be valid, so we don't store it.
 269                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 270                         $gcontact['server_url'] = "";
 271                 }
 272
 273                 return $gcontact;
 274         }
 275
 276         /**
 277          * @param integer $uid id
 278          * @param integer $cid id
 279          * @return integer
 280          */
 281         public static function countCommonFriends($uid, $cid)
 282         {
 283                 $r = q(
 284                         "SELECT count(*) as `total`
 285                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 286                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 287                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 288                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 289                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 290                         intval($cid),
 291                         intval($uid),
 292                         intval($uid),
 293                         intval($cid)
 294                 );
 295
 296                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 297                 if (DBM::is_result($r)) {
 298                         return $r[0]['total'];
 299                 }
 300                 return 0;
 301         }
 302
 303         /**
 304          * @param integer $uid  id
 305          * @param integer $zcid zcid
 306          * @return integer
 307          */
 308         public static function countCommonFriendsZcid($uid, $zcid)
 309         {
 310                 $r = q(
 311                         "SELECT count(*) as `total`
 312                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 313                         where `glink`.`zcid` = %d
 314                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 315                         intval($zcid),
 316                         intval($uid)
 317                 );
 318
 319                 if (DBM::is_result($r)) {
 320                         return $r[0]['total'];
 321                 }
 322
 323                 return 0;
 324         }
 325
 326         /**
 327          * @param integer $uid     user
 328          * @param integer $cid     cid
 329          * @param integer $start   optional, default 0
 330          * @param integer $limit   optional, default 9999
 331          * @param boolean $shuffle optional, default false
 332          * @return object
 333          */
 334         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 335         {
 336                 if ($shuffle) {
 337                         $sql_extra = " order by rand() ";
 338                 } else {
 339                         $sql_extra = " order by `gcontact`.`name` asc ";
 340                 }
 341
 342                 $r = q(
 343                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 344                         FROM `glink`
 345                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 346                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 347                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 348                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 349                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 350                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 351                                 $sql_extra LIMIT %d, %d",
 352                         intval($cid),
 353                         intval($uid),
 354                         intval($uid),
 355                         intval($cid),
 356                         intval($start),
 357                         intval($limit)
 358                 );
 359
 360                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 361                 return $r;
 362         }
 363
 364         /**
 365          * @param integer $uid     user
 366          * @param integer $zcid    zcid
 367          * @param integer $start   optional, default 0
 368          * @param integer $limit   optional, default 9999
 369          * @param boolean $shuffle optional, default false
 370          * @return object
 371          */
 372         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 373         {
 374                 if ($shuffle) {
 375                         $sql_extra = " order by rand() ";
 376                 } else {
 377                         $sql_extra = " order by `gcontact`.`name` asc ";
 378                 }
 379
 380                 $r = q(
 381                         "SELECT `gcontact`.*
 382                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 383                         where `glink`.`zcid` = %d
 384                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 385                         $sql_extra limit %d, %d",
 386                         intval($zcid),
 387                         intval($uid),
 388                         intval($start),
 389                         intval($limit)
 390                 );
 391
 392                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 393                 return $r;
 394         }
 395
 396         /**
 397          * @param integer $uid user
 398          * @param integer $cid cid
 399          * @return integer
 400          */
 401         public static function countAllFriends($uid, $cid)
 402         {
 403                 $r = q(
 404                         "SELECT count(*) as `total`
 405                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 406                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 407                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 408                         intval($cid),
 409                         intval($uid)
 410                 );
 411
 412                 if (DBM::is_result($r)) {
 413                         return $r[0]['total'];
 414                 }
 415
 416                 return 0;
 417         }
 418
 419         /**
 420          * @param integer $uid   user
 421          * @param integer $cid   cid
 422          * @param integer $start optional, default 0
 423          * @param integer $limit optional, default 80
 424          * @return array
 425          */
 426         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 427         {
 428                 $r = q(
 429                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 430                         FROM `glink`
 431                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 432                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 433                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 434                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 435                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 436                         intval($uid),
 437                         intval($cid),
 438                         intval($uid),
 439                         intval($start),
 440                         intval($limit)
 441                 );
 442
 443                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 444                 return $r;
 445         }
 446
 447         /**
 448          * @param object  $uid   user
 449          * @param integer $start optional, default 0
 450          * @param integer $limit optional, default 80
 451          * @return array
 452          */
 453         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 454         {
 455                 if (!$uid) {
 456                         return [];
 457                 }
 458
 459                 /*
 460                 * Uncommented because the result of the queries are to big to store it in the cache.
 461                 * We need to decide if we want to change the db column type or if we want to delete it.
 462                 */
 463                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 464                 //if (!is_null($list)) {
 465                 //      return $list;
 466                 //}
 467
 468                 $network = [NETWORK_DFRN];
 469
 470                 if (Config::get('system', 'diaspora_enabled')) {
 471                         $network[] = NETWORK_DIASPORA;
 472                 }
 473
 474                 if (!Config::get('system', 'ostatus_disabled')) {
 475                         $network[] = NETWORK_OSTATUS;
 476                 }
 477
 478                 $sql_network = implode("', '", $network);
 479                 $sql_network = "'".$sql_network."'";
 480
 481                 /// @todo This query is really slow
 482                 // By now we cache the data for five minutes
 483                 $r = q(
 484                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 485                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 486                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 487                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 488                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 489                         AND `gcontact`.`updated` >= '%s'
 490                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 491                         AND `gcontact`.`network` IN (%s)
 492                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 493                         intval($uid),
 494                         intval($uid),
 495                         intval($uid),
 496                         intval($uid),
 497                         dbesc(NULL_DATE),
 498                         $sql_network,
 499                         intval($start),
 500                         intval($limit)
 501                 );
 502
 503                 if (DBM::is_result($r) && count($r) >= ($limit -1)) {
 504                         /*
 505                         * Uncommented because the result of the queries are to big to store it in the cache.
 506                         * We need to decide if we want to change the db column type or if we want to delete it.
 507                         */
 508                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 509
 510                         return $r;
 511                 }
 512
 513                 $r2 = q(
 514                         "SELECT gcontact.* FROM gcontact
 515                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 516                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 517                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 518                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 519                         AND `gcontact`.`updated` >= '%s'
 520                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 521                         AND `gcontact`.`network` IN (%s)
 522                         ORDER BY rand() LIMIT %d, %d",
 523                         intval($uid),
 524                         intval($uid),
 525                         intval($uid),
 526                         dbesc(NULL_DATE),
 527                         $sql_network,
 528                         intval($start),
 529                         intval($limit)
 530                 );
 531
 532                 $list = [];
 533                 foreach ($r2 as $suggestion) {
 534                         $list[$suggestion["nurl"]] = $suggestion;
 535                 }
 536
 537                 foreach ($r as $suggestion) {
 538                         $list[$suggestion["nurl"]] = $suggestion;
 539                 }
 540
 541                 while (sizeof($list) > ($limit)) {
 542                         array_pop($list);
 543                 }
 544
 545                 /*
 546                 * Uncommented because the result of the queries are to big to store it in the cache.
 547                 * We need to decide if we want to change the db column type or if we want to delete it.
 548                 */
 549                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 550                 return $list;
 551         }
 552
 553         /**
 554          * @return void
 555          */
 556         public static function updateSuggestions()
 557         {
 558                 $a = get_app();
 559
 560                 $done = [];
 561
 562                 /// @TODO Check if it is really neccessary to poll the own server
 563                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 564
 565                 $done[] = System::baseUrl() . '/poco';
 566
 567                 if (strlen(Config::get('system', 'directory'))) {
 568                         $x = Network::fetchUrl(get_server()."/pubsites");
 569                         if ($x) {
 570                                 $j = json_decode($x);
 571                                 if ($j->entries) {
 572                                         foreach ($j->entries as $entry) {
 573                                                 PortableContact::checkServer($entry->url);
 574
 575                                                 $url = $entry->url . '/poco';
 576                                                 if (! in_array($url, $done)) {
 577                                                         PortableContact::loadWorker(0, 0, 0, $entry->url . '/poco');
 578                                                 }
 579                                         }
 580                                 }
 581                         }
 582                 }
 583
 584                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 585                 $r = q(
 586                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 587                         dbesc(NETWORK_DFRN),
 588                         dbesc(NETWORK_DIASPORA)
 589                 );
 590
 591                 if (DBM::is_result($r)) {
 592                         foreach ($r as $rr) {
 593                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 594                                 if (! in_array($base, $done)) {
 595                                         PortableContact::loadWorker(0, 0, 0, $base);
 596                                 }
 597                         }
 598                 }
 599         }
 600
 601         /**
 602          * @brief Removes unwanted parts from a contact url
 603          *
 604          * @param string $url Contact url
 605          *
 606          * @return string Contact url with the wanted parts
 607          */
 608         public static function cleanContactUrl($url)
 609         {
 610                 $parts = parse_url($url);
 611
 612                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 613                         return $url;
 614                 }
 615
 616                 $new_url = $parts["scheme"]."://".$parts["host"];
 617
 618                 if (isset($parts["port"])) {
 619                         $new_url .= ":".$parts["port"];
 620                 }
 621
 622                 if (isset($parts["path"])) {
 623                         $new_url .= $parts["path"];
 624                 }
 625
 626                 if ($new_url != $url) {
 627                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 628                 }
 629
 630                 return $new_url;
 631         }
 632
 633         /**
 634          * @brief Replace alternate OStatus user format with the primary one
 635          *
 636          * @param array $contact contact array (called by reference)
 637          * @return void
 638          */
 639         public static function fixAlternateContactAddress(&$contact)
 640         {
 641                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 642                         $data = Probe::uri($contact["url"]);
 643                         if ($contact["network"] == NETWORK_OSTATUS) {
 644                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 645                                 $contact["url"] = $data["url"];
 646                                 $contact["addr"] = $data["addr"];
 647                                 $contact["alias"] = $data["alias"];
 648                                 $contact["server_url"] = $data["baseurl"];
 649                         }
 650                 }
 651         }
 652
 653         /**
 654          * @brief Fetch the gcontact id, add an entry if not existed
 655          *
 656          * @param array $contact contact array
 657          *
 658          * @return bool|int Returns false if not found, integer if contact was found
 659          */
 660         public static function getId($contact)
 661         {
 662                 $gcontact_id = 0;
 663                 $doprobing = false;
 664                 $last_failure_str = '';
 665                 $last_contact_str = '';
 666
 667                 if (in_array($contact["network"], [NETWORK_PHANTOM])) {
 668                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 669                         return false;
 670                 }
 671
 672                 if ($contact["network"] == NETWORK_STATUSNET) {
 673                         $contact["network"] = NETWORK_OSTATUS;
 674                 }
 675
 676                 // All new contacts are hidden by default
 677                 if (!isset($contact["hide"])) {
 678                         $contact["hide"] = true;
 679                 }
 680
 681                 // Replace alternate OStatus user format with the primary one
 682                 self::fixAlternateContactAddress($contact);
 683
 684                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 685                 if (in_array($contact["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 686                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 687                 }
 688
 689                 dba::lock('gcontact');
 690                 $r = q(
 691                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 692                         dbesc(normalise_link($contact["url"]))
 693                 );
 694
 695                 if (DBM::is_result($r)) {
 696                         $gcontact_id = $r[0]["id"];
 697
 698                         // Update every 90 days
 699                         if (in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 700                                 $last_failure_str = $r[0]["last_failure"];
 701                                 $last_failure = strtotime($r[0]["last_failure"]);
 702                                 $last_contact_str = $r[0]["last_contact"];
 703                                 $last_contact = strtotime($r[0]["last_contact"]);
 704                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 705                         }
 706                 } else {
 707                         q(
 708                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 709                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 710                                 dbesc($contact["name"]),
 711                                 dbesc($contact["nick"]),
 712                                 dbesc($contact["addr"]),
 713                                 dbesc($contact["network"]),
 714                                 dbesc($contact["url"]),
 715                                 dbesc(normalise_link($contact["url"])),
 716                                 dbesc($contact["photo"]),
 717                                 dbesc(DateTimeFormat::utcNow()),
 718                                 dbesc(DateTimeFormat::utcNow()),
 719                                 dbesc($contact["location"]),
 720                                 dbesc($contact["about"]),
 721                                 intval($contact["hide"]),
 722                                 intval($contact["generation"])
 723                         );
 724
 725                         $r = q(
 726                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 727                                 dbesc(normalise_link($contact["url"]))
 728                         );
 729
 730                         if (DBM::is_result($r)) {
 731                                 $gcontact_id = $r[0]["id"];
 732
 733                                 $doprobing = in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""]);
 734                         }
 735                 }
 736                 dba::unlock();
 737
 738                 if ($doprobing) {
 739                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 740                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 741                 }
 742
 743                 return $gcontact_id;
 744         }
 745
 746         /**
 747          * @brief Updates the gcontact table from a given array
 748          *
 749          * @param array $contact contact array
 750          *
 751          * @return bool|int Returns false if not found, integer if contact was found
 752          */
 753         public static function update($contact)
 754         {
 755                 // Check for invalid "contact-type" value
 756                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 757                         $contact['contact-type'] = 0;
 758                 }
 759
 760                 /// @todo update contact table as well
 761
 762                 $gcontact_id = self::getId($contact);
 763
 764                 if (!$gcontact_id) {
 765                         return false;
 766                 }
 767
 768                 $public_contact = q(
 769                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 770                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 771                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 772                         intval($gcontact_id)
 773                 );
 774
 775                 // Get all field names
 776                 $fields = [];
 777                 foreach ($public_contact[0] as $field => $data) {
 778                         $fields[$field] = $data;
 779                 }
 780
 781                 unset($fields["url"]);
 782                 unset($fields["updated"]);
 783                 unset($fields["hide"]);
 784
 785                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 786                 // This value is still transmitted via poco.
 787                 if ($contact["keywords"] == "0") {
 788                         unset($contact["keywords"]);
 789                 }
 790
 791                 if ($public_contact[0]["keywords"] == "0") {
 792                         $public_contact[0]["keywords"] = "";
 793                 }
 794
 795                 // assign all unassigned fields from the database entry
 796                 foreach ($fields as $field => $data) {
 797                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 798                                 $contact[$field] = $public_contact[0][$field];
 799                         }
 800                 }
 801
 802                 if (!isset($contact["hide"])) {
 803                         $contact["hide"] = $public_contact[0]["hide"];
 804                 }
 805
 806                 $fields["hide"] = $public_contact[0]["hide"];
 807
 808                 if ($contact["network"] == NETWORK_STATUSNET) {
 809                         $contact["network"] = NETWORK_OSTATUS;
 810                 }
 811
 812                 // Replace alternate OStatus user format with the primary one
 813                 self::fixAlternateContactAddress($contact);
 814
 815                 if (!isset($contact["updated"])) {
 816                         $contact["updated"] = DBM::date();
 817                 }
 818
 819                 if ($contact["network"] == NETWORK_TWITTER) {
 820                         $contact["server_url"] = 'http://twitter.com';
 821                 }
 822
 823                 if ($contact["server_url"] == "") {
 824                         $data = Probe::uri($contact["url"]);
 825                         if ($data["network"] != NETWORK_PHANTOM) {
 826                                 $contact["server_url"] = $data['baseurl'];
 827                         }
 828                 } else {
 829                         $contact["server_url"] = normalise_link($contact["server_url"]);
 830                 }
 831
 832                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 833                         $hostname = str_replace("http://", "", $contact["server_url"]);
 834                         $contact["addr"] = $contact["nick"]."@".$hostname;
 835                 }
 836
 837                 // Check if any field changed
 838                 $update = false;
 839                 unset($fields["generation"]);
 840
 841                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 842                         foreach ($fields as $field => $data) {
 843                                 if ($contact[$field] != $public_contact[0][$field]) {
 844                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 845                                         $update = true;
 846                                 }
 847                         }
 848
 849                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 850                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 851                                 $update = true;
 852                         }
 853                 }
 854
 855                 if ($update) {
 856                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 857                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 858                                         normalise_link($contact["url"]), $contact["generation"]];
 859                         $contact["updated"] = DBM::date($contact["updated"]);
 860
 861                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 862                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 863                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 864                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 865                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 866                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 867                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 868                                         'location' => $contact['location'], 'about' => $contact['about'],
 869                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 870                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 871
 872                         dba::update('gcontact', $updated, $condition, $fields);
 873
 874                         // Now update the contact entry with the user id "0" as well.
 875                         // This is used for the shadow copies of public items.
 876                         /// @todo Check if we really should do this.
 877                         // The quality of the gcontact table is mostly lower than the public contact
 878                         $public_contact = dba::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 879                         if (DBM::is_result($public_contact)) {
 880                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 881
 882                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 883
 884                                 $fields = ['name', 'nick', 'addr',
 885                                                 'network', 'bd', 'gender',
 886                                                 'keywords', 'alias', 'contact-type',
 887                                                 'url', 'location', 'about'];
 888                                 $old_contact = dba::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 889
 890                                 // Update it with the current values
 891                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 892                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 893                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 894                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 895                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 896                                                 'location' => $contact['location'], 'about' => $contact['about']];
 897
 898                                 // Don't update the birthday field if not set or invalid
 899                                 if (empty($contact['birthday']) || ($contact['birthday'] < '0001-01-01')) {
 900                                         unset($fields['bd']);
 901                                 }
 902
 903
 904                                 dba::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 905                         }
 906                 }
 907
 908                 return $gcontact_id;
 909         }
 910
 911         /**
 912          * @brief Updates the gcontact entry from probe
 913          *
 914          * @param string $url profile link
 915          * @return void
 916          */
 917         public static function updateFromProbe($url)
 918         {
 919                 $data = Probe::uri($url);
 920
 921                 if (in_array($data["network"], [NETWORK_PHANTOM])) {
 922                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 923                         return;
 924                 }
 925
 926                 $data["server_url"] = $data["baseurl"];
 927
 928                 self::update($data);
 929         }
 930
 931         /**
 932          * @brief Update the gcontact entry for a given user id
 933          *
 934          * @param int $uid User ID
 935          * @return void
 936          */
 937         public static function updateForUser($uid)
 938         {
 939                 $r = q(
 940                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 941                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 942                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 943                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 944                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 945                         FROM `profile`
 946                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 947                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 948                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 949                         intval($uid)
 950                 );
 951
 952                 $location = Profile::formatLocation(
 953                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 954                 );
 955
 956                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 957                 if ($r[0]["addr"] != "") {
 958                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 959                 } else {
 960                         $addr = $r[0]["addr"];
 961                 }
 962
 963                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 964                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 965                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 966                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 967                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 968                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 969                                 "connect" => $addr, "server_url" => System::baseUrl(),
 970                                 "generation" => 1, "network" => NETWORK_DFRN];
 971
 972                 self::update($gcontact);
 973         }
 974
 975         /**
 976          * @brief Fetches users of given GNU Social server
 977          *
 978          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 979          *
 980          * @param string $server Server address
 981          * @return void
 982          */
 983         public static function fetchGsUsers($server)
 984         {
 985                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 986
 987                 $url = $server."/main/statistics";
 988
 989                 $result = Network::curl($url);
 990                 if (!$result["success"]) {
 991                         return false;
 992                 }
 993
 994                 $statistics = json_decode($result["body"]);
 995
 996                 if (is_object($statistics->config)) {
 997                         if ($statistics->config->instance_with_ssl) {
 998                                 $server = "https://";
 999                         } else {
1000                                 $server = "http://";
1001                         }
1002
1003                         $server .= $statistics->config->instance_address;
1004
1005                         $hostname = $statistics->config->instance_address;
1006                 } else {
1007                         /// @TODO is_object() above means here no object, still $statistics is being used as object
1008                         if ($statistics->instance_with_ssl) {
1009                                 $server = "https://";
1010                         } else {
1011                                 $server = "http://";
1012                         }
1013
1014                         $server .= $statistics->instance_address;
1015
1016                         $hostname = $statistics->instance_address;
1017                 }
1018
1019                 if (is_object($statistics->users)) {
1020                         foreach ($statistics->users as $nick => $user) {
1021                                 $profile_url = $server."/".$user->nickname;
1022
1023                                 $contact = ["url" => $profile_url,
1024                                                 "name" => $user->fullname,
1025                                                 "addr" => $user->nickname."@".$hostname,
1026                                                 "nick" => $user->nickname,
1027                                                 "about" => $user->bio,
1028                                                 "network" => NETWORK_OSTATUS,
1029                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1030                                 self::getId($contact);
1031                         }
1032                 }
1033         }
1034
1035         /**
1036          * @brief Asking GNU Social server on a regular base for their user data
1037          * @return void
1038          */
1039         public static function discoverGsUsers()
1040         {
1041                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1042
1043                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1044
1045                 $r = q(
1046                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1047                         dbesc(NETWORK_OSTATUS),
1048                         dbesc($last_update)
1049                 );
1050
1051                 if (!DBM::is_result($r)) {
1052                         return;
1053                 }
1054
1055                 foreach ($r as $server) {
1056                         self::fetchGsUsers($server["url"]);
1057                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(DateTimeFormat::utcNow()), dbesc($server["nurl"]));
1058                 }
1059         }
1060
1061         /**
1062          * @return string
1063          */
1064         public static function getRandomUrl()
1065         {
1066                 $r = q(
1067                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1068                                         AND `last_contact` >= `last_failure`
1069                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1070                                 ORDER BY rand() LIMIT 1",
1071                         dbesc(NETWORK_DFRN)
1072                 );
1073
1074                 if (DBM::is_result($r)) {
1075                         return dirname($r[0]['url']);
1076                 }
1077
1078                 return '';
1079         }
1080 }