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\System;
  12 use Friendica\Core\Worker;
  13 use Friendica\Database\DBA;
  14 use Friendica\Network\Probe;
  15 use Friendica\Protocol\PortableContact;
  16 use Friendica\Util\DateTimeFormat;
  17 use Friendica\Util\Network;
  18
  19 require_once 'include/dba.php';
  20
  21 /**
  22  * @brief This class handles GlobalContact related functions
  23  */
  24 class GContact
  25 {
  26         /**
  27          * @brief Search global contact table by nick or name
  28          *
  29          * @param string $search Name or nick
  30          * @param string $mode   Search mode (e.g. "community")
  31          *
  32          * @return array with search results
  33          */
  34         public static function searchByName($search, $mode = '')
  35         {
  36                 if (empty($search)) {
  37                         return [];
  38                 }
  39
  40                 // check supported networks
  41                 if (Config::get('system', 'diaspora_enabled')) {
  42                         $diaspora = NETWORK_DIASPORA;
  43                 } else {
  44                         $diaspora = NETWORK_DFRN;
  45                 }
  46
  47                 if (!Config::get('system', 'ostatus_disabled')) {
  48                         $ostatus = NETWORK_OSTATUS;
  49                 } else {
  50                         $ostatus = NETWORK_DFRN;
  51                 }
  52
  53                 // check if we search only communities or every contact
  54                 if ($mode === "community") {
  55                         $extra_sql = " AND `community`";
  56                 } else {
  57                         $extra_sql = "";
  58                 }
  59
  60                 $search .= "%";
  61
  62                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  63                         WHERE NOT `hide` AND `network` IN (?, ?, ?) AND
  64                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  65                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  66                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  67                         NETWORK_DFRN, $ostatus, $diaspora, $search, $search, $search
  68                 );
  69
  70                 $gcontacts = [];
  71                 while ($result = DBA::fetch($results)) {
  72                         $urlparts = parse_url($result["nurl"]);
  73
  74                         // Ignore results that look strange.
  75                         // For historic reasons the gcontact table does contain some garbage.
  76                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  77                                 continue;
  78                         }
  79
  80                         $gcontacts[] = Contact::getDetailsByURL($result["nurl"], local_user());
  81                 }
  82                 return $gcontacts;
  83         }
  84
  85         /**
  86          * @brief Link the gcontact entry with user, contact and global contact
  87          *
  88          * @param integer $gcid Global contact ID
  89          * @param integer $uid  User ID
  90          * @param integer $cid  Contact ID
  91          * @param integer $zcid Global Contact ID
  92          * @return void
  93          */
  94         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  95         {
  96                 if ($gcid <= 0) {
  97                         return;
  98                 }
  99
 100                 $r = q(
 101                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 102                         intval($cid),
 103                         intval($uid),
 104                         intval($gcid),
 105                         intval($zcid)
 106                 );
 107
 108                 if (!DBA::isResult($r)) {
 109                         q(
 110                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 111                                 intval($cid),
 112                                 intval($uid),
 113                                 intval($gcid),
 114                                 intval($zcid),
 115                                 DBA::escape(DateTimeFormat::utcNow())
 116                         );
 117                 } else {
 118                         q(
 119                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 120                                 DBA::escape(DateTimeFormat::utcNow()),
 121                                 intval($cid),
 122                                 intval($uid),
 123                                 intval($gcid),
 124                                 intval($zcid)
 125                         );
 126                 }
 127         }
 128
 129         /**
 130          * @brief Sanitize the given gcontact data
 131          *
 132          * @param array $gcontact array with gcontact data
 133          * @throw Exception
 134          *
 135          * Generation:
 136          *  0: No definition
 137          *  1: Profiles on this server
 138          *  2: Contacts of profiles on this server
 139          *  3: Contacts of contacts of profiles on this server
 140          *  4: ...
 141          * @return array $gcontact
 142          */
 143         public static function sanitize($gcontact)
 144         {
 145                 if ($gcontact['url'] == "") {
 146                         throw new Exception('URL is empty');
 147                 }
 148
 149                 $urlparts = parse_url($gcontact['url']);
 150                 if (!isset($urlparts["scheme"])) {
 151                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 152                 }
 153
 154                 if (in_array($urlparts["host"], ["twitter.com", "identi.ca"])) {
 155                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 156                 }
 157
 158                 // Don't store the statusnet connector as network
 159                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 160                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 161                         $gcontact['network'] = "";
 162                 }
 163
 164                 // Assure that there are no parameter fragments in the profile url
 165                 if (in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 166                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 167                 }
 168
 169                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 170
 171                 // The global contacts should contain the original picture, not the cached one
 172                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 173                         $gcontact['photo'] = "";
 174                 }
 175
 176                 if (!isset($gcontact['network'])) {
 177                         $r = q(
 178                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 179                                 DBA::escape(normalise_link($gcontact['url'])),
 180                                 DBA::escape(NETWORK_STATUSNET)
 181                         );
 182                         if (DBA::isResult($r)) {
 183                                 $gcontact['network'] = $r[0]["network"];
 184                         }
 185
 186                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 187                                 $r = q(
 188                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 189                                         DBA::escape($gcontact['url']),
 190                                         DBA::escape(normalise_link($gcontact['url'])),
 191                                         DBA::escape(NETWORK_STATUSNET)
 192                                 );
 193                                 if (DBA::isResult($r)) {
 194                                         $gcontact['network'] = $r[0]["network"];
 195                                 }
 196                         }
 197                 }
 198
 199                 $gcontact['server_url'] = '';
 200                 $gcontact['network'] = '';
 201
 202                 $x = q(
 203                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 204                         DBA::escape(normalise_link($gcontact['url']))
 205                 );
 206
 207                 if (DBA::isResult($x)) {
 208                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 209                                 $gcontact['network'] = $x[0]["network"];
 210                         }
 211                         if ($gcontact['updated'] <= NULL_DATE) {
 212                                 $gcontact['updated'] = $x[0]["updated"];
 213                         }
 214                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 215                                 $gcontact['server_url'] = $x[0]["server_url"];
 216                         }
 217                         if (!isset($gcontact['addr'])) {
 218                                 $gcontact['addr'] = $x[0]["addr"];
 219                         }
 220                 }
 221
 222                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 223                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 224                 ) {
 225                         $data = Probe::uri($gcontact['url']);
 226
 227                         if ($data["network"] == NETWORK_PHANTOM) {
 228                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 229                         }
 230
 231                         $orig_profile = $gcontact['url'];
 232
 233                         $gcontact["server_url"] = $data["baseurl"];
 234
 235                         $gcontact = array_merge($gcontact, $data);
 236
 237                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 238                                 // Delete the old entry - if it exists
 239                                 if (DBA::exists('gcontact', ['nurl' => normalise_link($orig_profile)])) {
 240                                         DBA::delete('gcontact', ['nurl' => normalise_link($orig_profile)]);
 241                                 }
 242                         }
 243                 }
 244
 245                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 246                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 247                 }
 248
 249                 if (!in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA])) {
 250                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 251                 }
 252
 253                 if (!isset($gcontact['server_url'])) {
 254                         // We check the server url to be sure that it is a real one
 255                         $server_url = PortableContact::detectServer($gcontact['url']);
 256
 257                         // We are now sure that it is a correct URL. So we use it in the future
 258                         if ($server_url != "") {
 259                                 $gcontact['server_url'] = $server_url;
 260                         }
 261                 }
 262
 263                 // The server URL doesn't seem to be valid, so we don't store it.
 264                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 265                         $gcontact['server_url'] = "";
 266                 }
 267
 268                 return $gcontact;
 269         }
 270
 271         /**
 272          * @param integer $uid id
 273          * @param integer $cid id
 274          * @return integer
 275          */
 276         public static function countCommonFriends($uid, $cid)
 277         {
 278                 $r = q(
 279                         "SELECT count(*) as `total`
 280                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 281                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 282                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 283                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 284                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 285                         intval($cid),
 286                         intval($uid),
 287                         intval($uid),
 288                         intval($cid)
 289                 );
 290
 291                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 292                 if (DBA::isResult($r)) {
 293                         return $r[0]['total'];
 294                 }
 295                 return 0;
 296         }
 297
 298         /**
 299          * @param integer $uid  id
 300          * @param integer $zcid zcid
 301          * @return integer
 302          */
 303         public static function countCommonFriendsZcid($uid, $zcid)
 304         {
 305                 $r = q(
 306                         "SELECT count(*) as `total`
 307                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 308                         where `glink`.`zcid` = %d
 309                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 310                         intval($zcid),
 311                         intval($uid)
 312                 );
 313
 314                 if (DBA::isResult($r)) {
 315                         return $r[0]['total'];
 316                 }
 317
 318                 return 0;
 319         }
 320
 321         /**
 322          * @param integer $uid     user
 323          * @param integer $cid     cid
 324          * @param integer $start   optional, default 0
 325          * @param integer $limit   optional, default 9999
 326          * @param boolean $shuffle optional, default false
 327          * @return object
 328          */
 329         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 330         {
 331                 if ($shuffle) {
 332                         $sql_extra = " order by rand() ";
 333                 } else {
 334                         $sql_extra = " order by `gcontact`.`name` asc ";
 335                 }
 336
 337                 $r = q(
 338                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 339                         FROM `glink`
 340                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 341                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 342                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 343                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 344                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 345                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 346                                 $sql_extra LIMIT %d, %d",
 347                         intval($cid),
 348                         intval($uid),
 349                         intval($uid),
 350                         intval($cid),
 351                         intval($start),
 352                         intval($limit)
 353                 );
 354
 355                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 356                 return $r;
 357         }
 358
 359         /**
 360          * @param integer $uid     user
 361          * @param integer $zcid    zcid
 362          * @param integer $start   optional, default 0
 363          * @param integer $limit   optional, default 9999
 364          * @param boolean $shuffle optional, default false
 365          * @return object
 366          */
 367         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 368         {
 369                 if ($shuffle) {
 370                         $sql_extra = " order by rand() ";
 371                 } else {
 372                         $sql_extra = " order by `gcontact`.`name` asc ";
 373                 }
 374
 375                 $r = q(
 376                         "SELECT `gcontact`.*
 377                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 378                         where `glink`.`zcid` = %d
 379                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 380                         $sql_extra limit %d, %d",
 381                         intval($zcid),
 382                         intval($uid),
 383                         intval($start),
 384                         intval($limit)
 385                 );
 386
 387                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 388                 return $r;
 389         }
 390
 391         /**
 392          * @param integer $uid user
 393          * @param integer $cid cid
 394          * @return integer
 395          */
 396         public static function countAllFriends($uid, $cid)
 397         {
 398                 $r = q(
 399                         "SELECT count(*) as `total`
 400                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 401                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 402                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 403                         intval($cid),
 404                         intval($uid)
 405                 );
 406
 407                 if (DBA::isResult($r)) {
 408                         return $r[0]['total'];
 409                 }
 410
 411                 return 0;
 412         }
 413
 414         /**
 415          * @param integer $uid   user
 416          * @param integer $cid   cid
 417          * @param integer $start optional, default 0
 418          * @param integer $limit optional, default 80
 419          * @return array
 420          */
 421         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 422         {
 423                 $r = q(
 424                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 425                         FROM `glink`
 426                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 427                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 428                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 429                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 430                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 431                         intval($uid),
 432                         intval($cid),
 433                         intval($uid),
 434                         intval($start),
 435                         intval($limit)
 436                 );
 437
 438                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 439                 return $r;
 440         }
 441
 442         /**
 443          * @param object  $uid   user
 444          * @param integer $start optional, default 0
 445          * @param integer $limit optional, default 80
 446          * @return array
 447          */
 448         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 449         {
 450                 if (!$uid) {
 451                         return [];
 452                 }
 453
 454                 /*
 455                 * Uncommented because the result of the queries are to big to store it in the cache.
 456                 * We need to decide if we want to change the db column type or if we want to delete it.
 457                 */
 458                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 459                 //if (!is_null($list)) {
 460                 //      return $list;
 461                 //}
 462
 463                 $network = [NETWORK_DFRN];
 464
 465                 if (Config::get('system', 'diaspora_enabled')) {
 466                         $network[] = NETWORK_DIASPORA;
 467                 }
 468
 469                 if (!Config::get('system', 'ostatus_disabled')) {
 470                         $network[] = NETWORK_OSTATUS;
 471                 }
 472
 473                 $sql_network = implode("', '", $network);
 474                 $sql_network = "'".$sql_network."'";
 475
 476                 /// @todo This query is really slow
 477                 // By now we cache the data for five minutes
 478                 $r = q(
 479                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 480                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 481                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 482                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 483                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 484                         AND `gcontact`.`updated` >= '%s'
 485                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 486                         AND `gcontact`.`network` IN (%s)
 487                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 488                         intval($uid),
 489                         intval($uid),
 490                         intval($uid),
 491                         intval($uid),
 492                         DBA::escape(NULL_DATE),
 493                         $sql_network,
 494                         intval($start),
 495                         intval($limit)
 496                 );
 497
 498                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 499                         /*
 500                         * Uncommented because the result of the queries are to big to store it in the cache.
 501                         * We need to decide if we want to change the db column type or if we want to delete it.
 502                         */
 503                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 504
 505                         return $r;
 506                 }
 507
 508                 $r2 = q(
 509                         "SELECT gcontact.* FROM gcontact
 510                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 511                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 512                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 513                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 514                         AND `gcontact`.`updated` >= '%s'
 515                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 516                         AND `gcontact`.`network` IN (%s)
 517                         ORDER BY rand() LIMIT %d, %d",
 518                         intval($uid),
 519                         intval($uid),
 520                         intval($uid),
 521                         DBA::escape(NULL_DATE),
 522                         $sql_network,
 523                         intval($start),
 524                         intval($limit)
 525                 );
 526
 527                 $list = [];
 528                 foreach ($r2 as $suggestion) {
 529                         $list[$suggestion["nurl"]] = $suggestion;
 530                 }
 531
 532                 foreach ($r as $suggestion) {
 533                         $list[$suggestion["nurl"]] = $suggestion;
 534                 }
 535
 536                 while (sizeof($list) > ($limit)) {
 537                         array_pop($list);
 538                 }
 539
 540                 /*
 541                 * Uncommented because the result of the queries are to big to store it in the cache.
 542                 * We need to decide if we want to change the db column type or if we want to delete it.
 543                 */
 544                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 545                 return $list;
 546         }
 547
 548         /**
 549          * @return void
 550          */
 551         public static function updateSuggestions()
 552         {
 553                 $a = get_app();
 554
 555                 $done = [];
 556
 557                 /// @TODO Check if it is really neccessary to poll the own server
 558                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 559
 560                 $done[] = System::baseUrl() . '/poco';
 561
 562                 if (strlen(Config::get('system', 'directory'))) {
 563                         $x = Network::fetchUrl(get_server()."/pubsites");
 564                         if (!empty($x)) {
 565                                 $j = json_decode($x);
 566                                 if (!empty($j->entries)) {
 567                                         foreach ($j->entries as $entry) {
 568                                                 PortableContact::checkServer($entry->url);
 569
 570                                                 $url = $entry->url . '/poco';
 571                                                 if (!in_array($url, $done)) {
 572                                                         PortableContact::loadWorker(0, 0, 0, $url);
 573                                                         $done[] = $url;
 574                                                 }
 575                                         }
 576                                 }
 577                         }
 578                 }
 579
 580                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 581                 $r = q(
 582                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 583                         DBA::escape(NETWORK_DFRN),
 584                         DBA::escape(NETWORK_DIASPORA)
 585                 );
 586
 587                 if (DBA::isResult($r)) {
 588                         foreach ($r as $rr) {
 589                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 590                                 if (! in_array($base, $done)) {
 591                                         PortableContact::loadWorker(0, 0, 0, $base);
 592                                 }
 593                         }
 594                 }
 595         }
 596
 597         /**
 598          * @brief Removes unwanted parts from a contact url
 599          *
 600          * @param string $url Contact url
 601          *
 602          * @return string Contact url with the wanted parts
 603          */
 604         public static function cleanContactUrl($url)
 605         {
 606                 $parts = parse_url($url);
 607
 608                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 609                         return $url;
 610                 }
 611
 612                 $new_url = $parts["scheme"]."://".$parts["host"];
 613
 614                 if (isset($parts["port"])) {
 615                         $new_url .= ":".$parts["port"];
 616                 }
 617
 618                 if (isset($parts["path"])) {
 619                         $new_url .= $parts["path"];
 620                 }
 621
 622                 if ($new_url != $url) {
 623                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 624                 }
 625
 626                 return $new_url;
 627         }
 628
 629         /**
 630          * @brief Replace alternate OStatus user format with the primary one
 631          *
 632          * @param array $contact contact array (called by reference)
 633          * @return void
 634          */
 635         public static function fixAlternateContactAddress(&$contact)
 636         {
 637                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 638                         $data = Probe::uri($contact["url"]);
 639                         if ($contact["network"] == NETWORK_OSTATUS) {
 640                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 641                                 $contact["url"] = $data["url"];
 642                                 $contact["addr"] = $data["addr"];
 643                                 $contact["alias"] = $data["alias"];
 644                                 $contact["server_url"] = $data["baseurl"];
 645                         }
 646                 }
 647         }
 648
 649         /**
 650          * @brief Fetch the gcontact id, add an entry if not existed
 651          *
 652          * @param array $contact contact array
 653          *
 654          * @return bool|int Returns false if not found, integer if contact was found
 655          */
 656         public static function getId($contact)
 657         {
 658                 $gcontact_id = 0;
 659                 $doprobing = false;
 660                 $last_failure_str = '';
 661                 $last_contact_str = '';
 662
 663                 if (empty($contact["network"])) {
 664                         logger("Empty network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 665                         return false;
 666                 }
 667
 668                 if (in_array($contact["network"], [NETWORK_PHANTOM])) {
 669                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 670                         return false;
 671                 }
 672
 673                 if ($contact["network"] == NETWORK_STATUSNET) {
 674                         $contact["network"] = NETWORK_OSTATUS;
 675                 }
 676
 677                 // All new contacts are hidden by default
 678                 if (!isset($contact["hide"])) {
 679                         $contact["hide"] = true;
 680                 }
 681
 682                 // Replace alternate OStatus user format with the primary one
 683                 self::fixAlternateContactAddress($contact);
 684
 685                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 686                 if (in_array($contact["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 687                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 688                 }
 689
 690                 DBA::lock('gcontact');
 691                 $r = q(
 692                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 693                         DBA::escape(normalise_link($contact["url"]))
 694                 );
 695
 696                 if (DBA::isResult($r)) {
 697                         $gcontact_id = $r[0]["id"];
 698
 699                         // Update every 90 days
 700                         if (in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 701                                 $last_failure_str = $r[0]["last_failure"];
 702                                 $last_failure = strtotime($r[0]["last_failure"]);
 703                                 $last_contact_str = $r[0]["last_contact"];
 704                                 $last_contact = strtotime($r[0]["last_contact"]);
 705                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 706                         }
 707                 } else {
 708                         $contact['location'] = defaults($contact, 'location', '');
 709                         $contact['about'] = defaults($contact, 'about', '');
 710                         $contact['generation'] = defaults($contact, 'generation', 0);
 711
 712                         q(
 713                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 714                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 715                                 DBA::escape($contact["name"]),
 716                                 DBA::escape($contact["nick"]),
 717                                 DBA::escape($contact["addr"]),
 718                                 DBA::escape($contact["network"]),
 719                                 DBA::escape($contact["url"]),
 720                                 DBA::escape(normalise_link($contact["url"])),
 721                                 DBA::escape($contact["photo"]),
 722                                 DBA::escape(DateTimeFormat::utcNow()),
 723                                 DBA::escape(DateTimeFormat::utcNow()),
 724                                 DBA::escape($contact["location"]),
 725                                 DBA::escape($contact["about"]),
 726                                 intval($contact["hide"]),
 727                                 intval($contact["generation"])
 728                         );
 729
 730                         $r = q(
 731                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 732                                 DBA::escape(normalise_link($contact["url"]))
 733                         );
 734
 735                         if (DBA::isResult($r)) {
 736                                 $gcontact_id = $r[0]["id"];
 737
 738                                 $doprobing = in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""]);
 739                         }
 740                 }
 741                 DBA::unlock();
 742
 743                 if ($doprobing) {
 744                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 745                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 746                 }
 747
 748                 return $gcontact_id;
 749         }
 750
 751         /**
 752          * @brief Updates the gcontact table from a given array
 753          *
 754          * @param array $contact contact array
 755          *
 756          * @return bool|int Returns false if not found, integer if contact was found
 757          */
 758         public static function update($contact)
 759         {
 760                 // Check for invalid "contact-type" value
 761                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 762                         $contact['contact-type'] = 0;
 763                 }
 764
 765                 /// @todo update contact table as well
 766
 767                 $gcontact_id = self::getId($contact);
 768
 769                 if (!$gcontact_id) {
 770                         return false;
 771                 }
 772
 773                 $public_contact = q(
 774                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 775                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 776                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 777                         intval($gcontact_id)
 778                 );
 779
 780                 // Get all field names
 781                 $fields = [];
 782                 foreach ($public_contact[0] as $field => $data) {
 783                         $fields[$field] = $data;
 784                 }
 785
 786                 unset($fields["url"]);
 787                 unset($fields["updated"]);
 788                 unset($fields["hide"]);
 789
 790                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 791                 // This value is still transmitted via poco.
 792                 if (!empty($contact["keywords"]) && ($contact["keywords"] == "0")) {
 793                         unset($contact["keywords"]);
 794                 }
 795
 796                 if (!empty($public_contact[0]["keywords"]) && ($public_contact[0]["keywords"] == "0")) {
 797                         $public_contact[0]["keywords"] = "";
 798                 }
 799
 800                 // assign all unassigned fields from the database entry
 801                 foreach ($fields as $field => $data) {
 802                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 803                                 $contact[$field] = $public_contact[0][$field];
 804                         }
 805                 }
 806
 807                 if (!isset($contact["hide"])) {
 808                         $contact["hide"] = $public_contact[0]["hide"];
 809                 }
 810
 811                 $fields["hide"] = $public_contact[0]["hide"];
 812
 813                 if ($contact["network"] == NETWORK_STATUSNET) {
 814                         $contact["network"] = NETWORK_OSTATUS;
 815                 }
 816
 817                 // Replace alternate OStatus user format with the primary one
 818                 self::fixAlternateContactAddress($contact);
 819
 820                 if (!isset($contact["updated"])) {
 821                         $contact["updated"] = DateTimeFormat::utcNow();
 822                 }
 823
 824                 if ($contact["network"] == NETWORK_TWITTER) {
 825                         $contact["server_url"] = 'http://twitter.com';
 826                 }
 827
 828                 if ($contact["server_url"] == "") {
 829                         $data = Probe::uri($contact["url"]);
 830                         if ($data["network"] != NETWORK_PHANTOM) {
 831                                 $contact["server_url"] = $data['baseurl'];
 832                         }
 833                 } else {
 834                         $contact["server_url"] = normalise_link($contact["server_url"]);
 835                 }
 836
 837                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 838                         $hostname = str_replace("http://", "", $contact["server_url"]);
 839                         $contact["addr"] = $contact["nick"]."@".$hostname;
 840                 }
 841
 842                 // Check if any field changed
 843                 $update = false;
 844                 unset($fields["generation"]);
 845
 846                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 847                         foreach ($fields as $field => $data) {
 848                                 if ($contact[$field] != $public_contact[0][$field]) {
 849                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 850                                         $update = true;
 851                                 }
 852                         }
 853
 854                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 855                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 856                                 $update = true;
 857                         }
 858                 }
 859
 860                 if ($update) {
 861                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 862                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 863                                         normalise_link($contact["url"]), $contact["generation"]];
 864                         $contact["updated"] = DateTimeFormat::utc($contact["updated"]);
 865
 866                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 867                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 868                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 869                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 870                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 871                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 872                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 873                                         'location' => $contact['location'], 'about' => $contact['about'],
 874                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 875                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 876
 877                         DBA::update('gcontact', $updated, $condition, $fields);
 878
 879                         // Now update the contact entry with the user id "0" as well.
 880                         // This is used for the shadow copies of public items.
 881                         /// @todo Check if we really should do this.
 882                         // The quality of the gcontact table is mostly lower than the public contact
 883                         $public_contact = DBA::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 884                         if (DBA::isResult($public_contact)) {
 885                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 886
 887                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 888
 889                                 $fields = ['name', 'nick', 'addr',
 890                                                 'network', 'bd', 'gender',
 891                                                 'keywords', 'alias', 'contact-type',
 892                                                 'url', 'location', 'about'];
 893                                 $old_contact = DBA::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 894
 895                                 // Update it with the current values
 896                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 897                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 898                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 899                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 900                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 901                                                 'location' => $contact['location'], 'about' => $contact['about']];
 902
 903                                 // Don't update the birthday field if not set or invalid
 904                                 if (empty($contact['birthday']) || ($contact['birthday'] < '0001-01-01')) {
 905                                         unset($fields['bd']);
 906                                 }
 907
 908
 909                                 DBA::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 910                         }
 911                 }
 912
 913                 return $gcontact_id;
 914         }
 915
 916         /**
 917          * @brief Updates the gcontact entry from probe
 918          *
 919          * @param string $url profile link
 920          * @return void
 921          */
 922         public static function updateFromProbe($url)
 923         {
 924                 $data = Probe::uri($url);
 925
 926                 if (in_array($data["network"], [NETWORK_PHANTOM])) {
 927                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 928                         return;
 929                 }
 930
 931                 $data["server_url"] = $data["baseurl"];
 932
 933                 self::update($data);
 934         }
 935
 936         /**
 937          * @brief Update the gcontact entry for a given user id
 938          *
 939          * @param int $uid User ID
 940          * @return void
 941          */
 942         public static function updateForUser($uid)
 943         {
 944                 $r = q(
 945                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 946                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 947                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 948                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 949                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 950                         FROM `profile`
 951                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 952                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 953                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 954                         intval($uid)
 955                 );
 956
 957                 $location = Profile::formatLocation(
 958                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 959                 );
 960
 961                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 962                 if ($r[0]["addr"] != "") {
 963                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 964                 } else {
 965                         $addr = $r[0]["addr"];
 966                 }
 967
 968                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 969                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 970                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 971                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 972                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 973                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 974                                 "connect" => $addr, "server_url" => System::baseUrl(),
 975                                 "generation" => 1, "network" => NETWORK_DFRN];
 976
 977                 self::update($gcontact);
 978         }
 979
 980         /**
 981          * @brief Fetches users of given GNU Social server
 982          *
 983          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 984          *
 985          * @param string $server Server address
 986          * @return void
 987          */
 988         public static function fetchGsUsers($server)
 989         {
 990                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 991
 992                 $url = $server."/main/statistics";
 993
 994                 $result = Network::curl($url);
 995                 if (!$result["success"]) {
 996                         return false;
 997                 }
 998
 999                 $statistics = json_decode($result["body"]);
1000
1001                 if (!empty($statistics->config)) {
1002                         if ($statistics->config->instance_with_ssl) {
1003                                 $server = "https://";
1004                         } else {
1005                                 $server = "http://";
1006                         }
1007
1008                         $server .= $statistics->config->instance_address;
1009
1010                         $hostname = $statistics->config->instance_address;
1011                 } elseif (!empty($statistics)) {
1012                         if ($statistics->instance_with_ssl) {
1013                                 $server = "https://";
1014                         } else {
1015                                 $server = "http://";
1016                         }
1017
1018                         $server .= $statistics->instance_address;
1019
1020                         $hostname = $statistics->instance_address;
1021                 }
1022
1023                 if (!empty($statistics->users)) {
1024                         foreach ($statistics->users as $nick => $user) {
1025                                 $profile_url = $server."/".$user->nickname;
1026
1027                                 $contact = ["url" => $profile_url,
1028                                                 "name" => $user->fullname,
1029                                                 "addr" => $user->nickname."@".$hostname,
1030                                                 "nick" => $user->nickname,
1031                                                 "network" => NETWORK_OSTATUS,
1032                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1033
1034                                 if (isset($user->bio)) {
1035                                         $contact["about"] = $user->bio;
1036                                 }
1037
1038                                 self::getId($contact);
1039                         }
1040                 }
1041         }
1042
1043         /**
1044          * @brief Asking GNU Social server on a regular base for their user data
1045          * @return void
1046          */
1047         public static function discoverGsUsers()
1048         {
1049                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1050
1051                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1052
1053                 $r = q(
1054                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1055                         DBA::escape(NETWORK_OSTATUS),
1056                         DBA::escape($last_update)
1057                 );
1058
1059                 if (!DBA::isResult($r)) {
1060                         return;
1061                 }
1062
1063                 foreach ($r as $server) {
1064                         self::fetchGsUsers($server["url"]);
1065                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", DBA::escape(DateTimeFormat::utcNow()), DBA::escape($server["nurl"]));
1066                 }
1067         }
1068
1069         /**
1070          * @return string
1071          */
1072         public static function getRandomUrl()
1073         {
1074                 $r = q(
1075                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1076                                         AND `last_contact` >= `last_failure`
1077                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1078                                 ORDER BY rand() LIMIT 1",
1079                         DBA::escape(NETWORK_DFRN)
1080                 );
1081
1082                 if (DBA::isResult($r)) {
1083                         return dirname($r[0]['url']);
1084                 }
1085
1086                 return '';
1087         }
1088 }