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\Protocol;
  12 use Friendica\Core\System;
  13 use Friendica\Core\Worker;
  14 use Friendica\Database\DBA;
  15 use Friendica\Network\Probe;
  16 use Friendica\Protocol\PortableContact;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Network;
  19
  20 require_once 'include/dba.php';
  21
  22 /**
  23  * @brief This class handles GlobalContact related functions
  24  */
  25 class GContact
  26 {
  27         /**
  28          * @brief Search global contact table by nick or name
  29          *
  30          * @param string $search Name or nick
  31          * @param string $mode   Search mode (e.g. "community")
  32          *
  33          * @return array with search results
  34          */
  35         public static function searchByName($search, $mode = '')
  36         {
  37                 if (empty($search)) {
  38                         return [];
  39                 }
  40
  41                 // check supported networks
  42                 if (Config::get('system', 'diaspora_enabled')) {
  43                         $diaspora = Protocol::DIASPORA;
  44                 } else {
  45                         $diaspora = Protocol::DFRN;
  46                 }
  47
  48                 if (!Config::get('system', 'ostatus_disabled')) {
  49                         $ostatus = Protocol::OSTATUS;
  50                 } else {
  51                         $ostatus = Protocol::DFRN;
  52                 }
  53
  54                 // check if we search only communities or every contact
  55                 if ($mode === "community") {
  56                         $extra_sql = " AND `community`";
  57                 } else {
  58                         $extra_sql = "";
  59                 }
  60
  61                 $search .= "%";
  62
  63                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  64                         WHERE NOT `hide` AND `network` IN (?, ?, ?) AND
  65                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  66                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  67                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  68                         Protocol::DFRN, $ostatus, $diaspora, $search, $search, $search
  69                 );
  70
  71                 $gcontacts = [];
  72                 while ($result = DBA::fetch($results)) {
  73                         $urlparts = parse_url($result["nurl"]);
  74
  75                         // Ignore results that look strange.
  76                         // For historic reasons the gcontact table does contain some garbage.
  77                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  78                                 continue;
  79                         }
  80
  81                         $gcontacts[] = Contact::getDetailsByURL($result["nurl"], local_user());
  82                 }
  83                 return $gcontacts;
  84         }
  85
  86         /**
  87          * @brief Link the gcontact entry with user, contact and global contact
  88          *
  89          * @param integer $gcid Global contact ID
  90          * @param integer $uid  User ID
  91          * @param integer $cid  Contact ID
  92          * @param integer $zcid Global Contact ID
  93          * @return void
  94          */
  95         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  96         {
  97                 if ($gcid <= 0) {
  98                         return;
  99                 }
 100
 101                 $r = q(
 102                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 103                         intval($cid),
 104                         intval($uid),
 105                         intval($gcid),
 106                         intval($zcid)
 107                 );
 108
 109                 if (!DBA::isResult($r)) {
 110                         q(
 111                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 112                                 intval($cid),
 113                                 intval($uid),
 114                                 intval($gcid),
 115                                 intval($zcid),
 116                                 DBA::escape(DateTimeFormat::utcNow())
 117                         );
 118                 } else {
 119                         q(
 120                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 121                                 DBA::escape(DateTimeFormat::utcNow()),
 122                                 intval($cid),
 123                                 intval($uid),
 124                                 intval($gcid),
 125                                 intval($zcid)
 126                         );
 127                 }
 128         }
 129
 130         /**
 131          * @brief Sanitize the given gcontact data
 132          *
 133          * @param array $gcontact array with gcontact data
 134          * @throw Exception
 135          *
 136          * Generation:
 137          *  0: No definition
 138          *  1: Profiles on this server
 139          *  2: Contacts of profiles on this server
 140          *  3: Contacts of contacts of profiles on this server
 141          *  4: ...
 142          * @return array $gcontact
 143          */
 144         public static function sanitize($gcontact)
 145         {
 146                 if ($gcontact['url'] == "") {
 147                         throw new Exception('URL is empty');
 148                 }
 149
 150                 $urlparts = parse_url($gcontact['url']);
 151                 if (!isset($urlparts["scheme"])) {
 152                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 153                 }
 154
 155                 if (in_array($urlparts["host"], ["twitter.com", "identi.ca"])) {
 156                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 157                 }
 158
 159                 // Don't store the statusnet connector as network
 160                 // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
 161                 if ($gcontact['network'] == Protocol::STATUSNET) {
 162                         $gcontact['network'] = "";
 163                 }
 164
 165                 // Assure that there are no parameter fragments in the profile url
 166                 if (in_array($gcontact['network'], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 167                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 168                 }
 169
 170                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 171
 172                 // The global contacts should contain the original picture, not the cached one
 173                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 174                         $gcontact['photo'] = "";
 175                 }
 176
 177                 if (!isset($gcontact['network'])) {
 178                         $r = q(
 179                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 180                                 DBA::escape(normalise_link($gcontact['url'])),
 181                                 DBA::escape(Protocol::STATUSNET)
 182                         );
 183                         if (DBA::isResult($r)) {
 184                                 $gcontact['network'] = $r[0]["network"];
 185                         }
 186
 187                         if (($gcontact['network'] == "") || ($gcontact['network'] == Protocol::OSTATUS)) {
 188                                 $r = q(
 189                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 190                                         DBA::escape($gcontact['url']),
 191                                         DBA::escape(normalise_link($gcontact['url'])),
 192                                         DBA::escape(Protocol::STATUSNET)
 193                                 );
 194                                 if (DBA::isResult($r)) {
 195                                         $gcontact['network'] = $r[0]["network"];
 196                                 }
 197                         }
 198                 }
 199
 200                 $gcontact['server_url'] = '';
 201                 $gcontact['network'] = '';
 202
 203                 $x = q(
 204                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 205                         DBA::escape(normalise_link($gcontact['url']))
 206                 );
 207
 208                 if (DBA::isResult($x)) {
 209                         if (!isset($gcontact['network']) && ($x[0]["network"] != Protocol::STATUSNET)) {
 210                                 $gcontact['network'] = $x[0]["network"];
 211                         }
 212                         if ($gcontact['updated'] <= NULL_DATE) {
 213                                 $gcontact['updated'] = $x[0]["updated"];
 214                         }
 215                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 216                                 $gcontact['server_url'] = $x[0]["server_url"];
 217                         }
 218                         if (!isset($gcontact['addr'])) {
 219                                 $gcontact['addr'] = $x[0]["addr"];
 220                         }
 221                 }
 222
 223                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 224                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 225                 ) {
 226                         $data = Probe::uri($gcontact['url']);
 227
 228                         if ($data["network"] == Protocol::PHANTOM) {
 229                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 230                         }
 231
 232                         $orig_profile = $gcontact['url'];
 233
 234                         $gcontact["server_url"] = $data["baseurl"];
 235
 236                         $gcontact = array_merge($gcontact, $data);
 237
 238                         if ($alternate && ($gcontact['network'] == Protocol::OSTATUS)) {
 239                                 // Delete the old entry - if it exists
 240                                 if (DBA::exists('gcontact', ['nurl' => normalise_link($orig_profile)])) {
 241                                         DBA::delete('gcontact', ['nurl' => normalise_link($orig_profile)]);
 242                                 }
 243                         }
 244                 }
 245
 246                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 247                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 248                 }
 249
 250                 if (!in_array($gcontact['network'], [Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA])) {
 251                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 252                 }
 253
 254                 if (!isset($gcontact['server_url'])) {
 255                         // We check the server url to be sure that it is a real one
 256                         $server_url = PortableContact::detectServer($gcontact['url']);
 257
 258                         // We are now sure that it is a correct URL. So we use it in the future
 259                         if ($server_url != "") {
 260                                 $gcontact['server_url'] = $server_url;
 261                         }
 262                 }
 263
 264                 // The server URL doesn't seem to be valid, so we don't store it.
 265                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 266                         $gcontact['server_url'] = "";
 267                 }
 268
 269                 return $gcontact;
 270         }
 271
 272         /**
 273          * @param integer $uid id
 274          * @param integer $cid id
 275          * @return integer
 276          */
 277         public static function countCommonFriends($uid, $cid)
 278         {
 279                 $r = q(
 280                         "SELECT count(*) as `total`
 281                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 282                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 283                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 284                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 285                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 286                         intval($cid),
 287                         intval($uid),
 288                         intval($uid),
 289                         intval($cid)
 290                 );
 291
 292                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 293                 if (DBA::isResult($r)) {
 294                         return $r[0]['total'];
 295                 }
 296                 return 0;
 297         }
 298
 299         /**
 300          * @param integer $uid  id
 301          * @param integer $zcid zcid
 302          * @return integer
 303          */
 304         public static function countCommonFriendsZcid($uid, $zcid)
 305         {
 306                 $r = q(
 307                         "SELECT count(*) as `total`
 308                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 309                         where `glink`.`zcid` = %d
 310                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 311                         intval($zcid),
 312                         intval($uid)
 313                 );
 314
 315                 if (DBA::isResult($r)) {
 316                         return $r[0]['total'];
 317                 }
 318
 319                 return 0;
 320         }
 321
 322         /**
 323          * @param integer $uid     user
 324          * @param integer $cid     cid
 325          * @param integer $start   optional, default 0
 326          * @param integer $limit   optional, default 9999
 327          * @param boolean $shuffle optional, default false
 328          * @return object
 329          */
 330         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 331         {
 332                 if ($shuffle) {
 333                         $sql_extra = " order by rand() ";
 334                 } else {
 335                         $sql_extra = " order by `gcontact`.`name` asc ";
 336                 }
 337
 338                 $r = q(
 339                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 340                         FROM `glink`
 341                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 342                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 343                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 344                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 345                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 346                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 347                                 $sql_extra LIMIT %d, %d",
 348                         intval($cid),
 349                         intval($uid),
 350                         intval($uid),
 351                         intval($cid),
 352                         intval($start),
 353                         intval($limit)
 354                 );
 355
 356                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 357                 return $r;
 358         }
 359
 360         /**
 361          * @param integer $uid     user
 362          * @param integer $zcid    zcid
 363          * @param integer $start   optional, default 0
 364          * @param integer $limit   optional, default 9999
 365          * @param boolean $shuffle optional, default false
 366          * @return object
 367          */
 368         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 369         {
 370                 if ($shuffle) {
 371                         $sql_extra = " order by rand() ";
 372                 } else {
 373                         $sql_extra = " order by `gcontact`.`name` asc ";
 374                 }
 375
 376                 $r = q(
 377                         "SELECT `gcontact`.*
 378                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 379                         where `glink`.`zcid` = %d
 380                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 381                         $sql_extra limit %d, %d",
 382                         intval($zcid),
 383                         intval($uid),
 384                         intval($start),
 385                         intval($limit)
 386                 );
 387
 388                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 389                 return $r;
 390         }
 391
 392         /**
 393          * @param integer $uid user
 394          * @param integer $cid cid
 395          * @return integer
 396          */
 397         public static function countAllFriends($uid, $cid)
 398         {
 399                 $r = q(
 400                         "SELECT count(*) as `total`
 401                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 402                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 403                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 404                         intval($cid),
 405                         intval($uid)
 406                 );
 407
 408                 if (DBA::isResult($r)) {
 409                         return $r[0]['total'];
 410                 }
 411
 412                 return 0;
 413         }
 414
 415         /**
 416          * @param integer $uid   user
 417          * @param integer $cid   cid
 418          * @param integer $start optional, default 0
 419          * @param integer $limit optional, default 80
 420          * @return array
 421          */
 422         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 423         {
 424                 $r = q(
 425                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 426                         FROM `glink`
 427                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 428                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 429                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 430                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 431                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 432                         intval($uid),
 433                         intval($cid),
 434                         intval($uid),
 435                         intval($start),
 436                         intval($limit)
 437                 );
 438
 439                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 440                 return $r;
 441         }
 442
 443         /**
 444          * @param object  $uid   user
 445          * @param integer $start optional, default 0
 446          * @param integer $limit optional, default 80
 447          * @return array
 448          */
 449         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 450         {
 451                 if (!$uid) {
 452                         return [];
 453                 }
 454
 455                 /*
 456                 * Uncommented because the result of the queries are to big to store it in the cache.
 457                 * We need to decide if we want to change the db column type or if we want to delete it.
 458                 */
 459                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 460                 //if (!is_null($list)) {
 461                 //      return $list;
 462                 //}
 463
 464                 $network = [Protocol::DFRN];
 465
 466                 if (Config::get('system', 'diaspora_enabled')) {
 467                         $network[] = Protocol::DIASPORA;
 468                 }
 469
 470                 if (!Config::get('system', 'ostatus_disabled')) {
 471                         $network[] = Protocol::OSTATUS;
 472                 }
 473
 474                 $sql_network = implode("', '", $network);
 475                 $sql_network = "'".$sql_network."'";
 476
 477                 /// @todo This query is really slow
 478                 // By now we cache the data for five minutes
 479                 $r = q(
 480                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 481                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 482                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 483                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 484                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 485                         AND `gcontact`.`updated` >= '%s'
 486                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 487                         AND `gcontact`.`network` IN (%s)
 488                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 489                         intval($uid),
 490                         intval($uid),
 491                         intval($uid),
 492                         intval($uid),
 493                         DBA::escape(NULL_DATE),
 494                         $sql_network,
 495                         intval($start),
 496                         intval($limit)
 497                 );
 498
 499                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 500                         /*
 501                         * Uncommented because the result of the queries are to big to store it in the cache.
 502                         * We need to decide if we want to change the db column type or if we want to delete it.
 503                         */
 504                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 505
 506                         return $r;
 507                 }
 508
 509                 $r2 = q(
 510                         "SELECT gcontact.* FROM gcontact
 511                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 512                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 513                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 514                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 515                         AND `gcontact`.`updated` >= '%s'
 516                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 517                         AND `gcontact`.`network` IN (%s)
 518                         ORDER BY rand() LIMIT %d, %d",
 519                         intval($uid),
 520                         intval($uid),
 521                         intval($uid),
 522                         DBA::escape(NULL_DATE),
 523                         $sql_network,
 524                         intval($start),
 525                         intval($limit)
 526                 );
 527
 528                 $list = [];
 529                 foreach ($r2 as $suggestion) {
 530                         $list[$suggestion["nurl"]] = $suggestion;
 531                 }
 532
 533                 foreach ($r as $suggestion) {
 534                         $list[$suggestion["nurl"]] = $suggestion;
 535                 }
 536
 537                 while (sizeof($list) > ($limit)) {
 538                         array_pop($list);
 539                 }
 540
 541                 /*
 542                 * Uncommented because the result of the queries are to big to store it in the cache.
 543                 * We need to decide if we want to change the db column type or if we want to delete it.
 544                 */
 545                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 546                 return $list;
 547         }
 548
 549         /**
 550          * @return void
 551          */
 552         public static function updateSuggestions()
 553         {
 554                 $a = get_app();
 555
 556                 $done = [];
 557
 558                 /// @TODO Check if it is really neccessary to poll the own server
 559                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 560
 561                 $done[] = System::baseUrl() . '/poco';
 562
 563                 if (strlen(Config::get('system', 'directory'))) {
 564                         $x = Network::fetchUrl(get_server()."/pubsites");
 565                         if (!empty($x)) {
 566                                 $j = json_decode($x);
 567                                 if (!empty($j->entries)) {
 568                                         foreach ($j->entries as $entry) {
 569                                                 PortableContact::checkServer($entry->url);
 570
 571                                                 $url = $entry->url . '/poco';
 572                                                 if (!in_array($url, $done)) {
 573                                                         PortableContact::loadWorker(0, 0, 0, $url);
 574                                                         $done[] = $url;
 575                                                 }
 576                                         }
 577                                 }
 578                         }
 579                 }
 580
 581                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 582                 $r = q(
 583                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 584                         DBA::escape(Protocol::DFRN),
 585                         DBA::escape(Protocol::DIASPORA)
 586                 );
 587
 588                 if (DBA::isResult($r)) {
 589                         foreach ($r as $rr) {
 590                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 591                                 if (! in_array($base, $done)) {
 592                                         PortableContact::loadWorker(0, 0, 0, $base);
 593                                 }
 594                         }
 595                 }
 596         }
 597
 598         /**
 599          * @brief Removes unwanted parts from a contact url
 600          *
 601          * @param string $url Contact url
 602          *
 603          * @return string Contact url with the wanted parts
 604          */
 605         public static function cleanContactUrl($url)
 606         {
 607                 $parts = parse_url($url);
 608
 609                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 610                         return $url;
 611                 }
 612
 613                 $new_url = $parts["scheme"]."://".$parts["host"];
 614
 615                 if (isset($parts["port"])) {
 616                         $new_url .= ":".$parts["port"];
 617                 }
 618
 619                 if (isset($parts["path"])) {
 620                         $new_url .= $parts["path"];
 621                 }
 622
 623                 if ($new_url != $url) {
 624                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 625                 }
 626
 627                 return $new_url;
 628         }
 629
 630         /**
 631          * @brief Replace alternate OStatus user format with the primary one
 632          *
 633          * @param array $contact contact array (called by reference)
 634          * @return void
 635          */
 636         public static function fixAlternateContactAddress(&$contact)
 637         {
 638                 if (($contact["network"] == Protocol::OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 639                         $data = Probe::uri($contact["url"]);
 640                         if ($contact["network"] == Protocol::OSTATUS) {
 641                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 642                                 $contact["url"] = $data["url"];
 643                                 $contact["addr"] = $data["addr"];
 644                                 $contact["alias"] = $data["alias"];
 645                                 $contact["server_url"] = $data["baseurl"];
 646                         }
 647                 }
 648         }
 649
 650         /**
 651          * @brief Fetch the gcontact id, add an entry if not existed
 652          *
 653          * @param array $contact contact array
 654          *
 655          * @return bool|int Returns false if not found, integer if contact was found
 656          */
 657         public static function getId($contact)
 658         {
 659                 $gcontact_id = 0;
 660                 $doprobing = false;
 661                 $last_failure_str = '';
 662                 $last_contact_str = '';
 663
 664                 if (empty($contact["network"])) {
 665                         logger("Empty network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 666                         return false;
 667                 }
 668
 669                 if (in_array($contact["network"], [Protocol::PHANTOM])) {
 670                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 671                         return false;
 672                 }
 673
 674                 if ($contact["network"] == Protocol::STATUSNET) {
 675                         $contact["network"] = Protocol::OSTATUS;
 676                 }
 677
 678                 // All new contacts are hidden by default
 679                 if (!isset($contact["hide"])) {
 680                         $contact["hide"] = true;
 681                 }
 682
 683                 // Replace alternate OStatus user format with the primary one
 684                 self::fixAlternateContactAddress($contact);
 685
 686                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 687                 if (in_array($contact["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 688                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 689                 }
 690
 691                 DBA::lock('gcontact');
 692                 $r = q(
 693                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 694                         DBA::escape(normalise_link($contact["url"]))
 695                 );
 696
 697                 if (DBA::isResult($r)) {
 698                         $gcontact_id = $r[0]["id"];
 699
 700                         // Update every 90 days
 701                         if (in_array($r[0]["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 702                                 $last_failure_str = $r[0]["last_failure"];
 703                                 $last_failure = strtotime($r[0]["last_failure"]);
 704                                 $last_contact_str = $r[0]["last_contact"];
 705                                 $last_contact = strtotime($r[0]["last_contact"]);
 706                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 707                         }
 708                 } else {
 709                         $contact['location'] = defaults($contact, 'location', '');
 710                         $contact['about'] = defaults($contact, 'about', '');
 711                         $contact['generation'] = defaults($contact, 'generation', 0);
 712
 713                         q(
 714                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 715                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 716                                 DBA::escape($contact["name"]),
 717                                 DBA::escape($contact["nick"]),
 718                                 DBA::escape($contact["addr"]),
 719                                 DBA::escape($contact["network"]),
 720                                 DBA::escape($contact["url"]),
 721                                 DBA::escape(normalise_link($contact["url"])),
 722                                 DBA::escape($contact["photo"]),
 723                                 DBA::escape(DateTimeFormat::utcNow()),
 724                                 DBA::escape(DateTimeFormat::utcNow()),
 725                                 DBA::escape($contact["location"]),
 726                                 DBA::escape($contact["about"]),
 727                                 intval($contact["hide"]),
 728                                 intval($contact["generation"])
 729                         );
 730
 731                         $r = q(
 732                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 733                                 DBA::escape(normalise_link($contact["url"]))
 734                         );
 735
 736                         if (DBA::isResult($r)) {
 737                                 $gcontact_id = $r[0]["id"];
 738
 739                                 $doprobing = in_array($r[0]["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""]);
 740                         }
 741                 }
 742                 DBA::unlock();
 743
 744                 if ($doprobing) {
 745                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 746                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 747                 }
 748
 749                 return $gcontact_id;
 750         }
 751
 752         /**
 753          * @brief Updates the gcontact table from a given array
 754          *
 755          * @param array $contact contact array
 756          *
 757          * @return bool|int Returns false if not found, integer if contact was found
 758          */
 759         public static function update($contact)
 760         {
 761                 // Check for invalid "contact-type" value
 762                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 763                         $contact['contact-type'] = 0;
 764                 }
 765
 766                 /// @todo update contact table as well
 767
 768                 $gcontact_id = self::getId($contact);
 769
 770                 if (!$gcontact_id) {
 771                         return false;
 772                 }
 773
 774                 $public_contact = q(
 775                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 776                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 777                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 778                         intval($gcontact_id)
 779                 );
 780
 781                 // Get all field names
 782                 $fields = [];
 783                 foreach ($public_contact[0] as $field => $data) {
 784                         $fields[$field] = $data;
 785                 }
 786
 787                 unset($fields["url"]);
 788                 unset($fields["updated"]);
 789                 unset($fields["hide"]);
 790
 791                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 792                 // This value is still transmitted via poco.
 793                 if (!empty($contact["keywords"]) && ($contact["keywords"] == "0")) {
 794                         unset($contact["keywords"]);
 795                 }
 796
 797                 if (!empty($public_contact[0]["keywords"]) && ($public_contact[0]["keywords"] == "0")) {
 798                         $public_contact[0]["keywords"] = "";
 799                 }
 800
 801                 // assign all unassigned fields from the database entry
 802                 foreach ($fields as $field => $data) {
 803                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 804                                 $contact[$field] = $public_contact[0][$field];
 805                         }
 806                 }
 807
 808                 if (!isset($contact["hide"])) {
 809                         $contact["hide"] = $public_contact[0]["hide"];
 810                 }
 811
 812                 $fields["hide"] = $public_contact[0]["hide"];
 813
 814                 if ($contact["network"] == Protocol::STATUSNET) {
 815                         $contact["network"] = Protocol::OSTATUS;
 816                 }
 817
 818                 // Replace alternate OStatus user format with the primary one
 819                 self::fixAlternateContactAddress($contact);
 820
 821                 if (!isset($contact["updated"])) {
 822                         $contact["updated"] = DateTimeFormat::utcNow();
 823                 }
 824
 825                 if ($contact["network"] == Protocol::TWITTER) {
 826                         $contact["server_url"] = 'http://twitter.com';
 827                 }
 828
 829                 if ($contact["server_url"] == "") {
 830                         $data = Probe::uri($contact["url"]);
 831                         if ($data["network"] != Protocol::PHANTOM) {
 832                                 $contact["server_url"] = $data['baseurl'];
 833                         }
 834                 } else {
 835                         $contact["server_url"] = normalise_link($contact["server_url"]);
 836                 }
 837
 838                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 839                         $hostname = str_replace("http://", "", $contact["server_url"]);
 840                         $contact["addr"] = $contact["nick"]."@".$hostname;
 841                 }
 842
 843                 // Check if any field changed
 844                 $update = false;
 845                 unset($fields["generation"]);
 846
 847                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 848                         foreach ($fields as $field => $data) {
 849                                 if ($contact[$field] != $public_contact[0][$field]) {
 850                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 851                                         $update = true;
 852                                 }
 853                         }
 854
 855                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 856                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 857                                 $update = true;
 858                         }
 859                 }
 860
 861                 if ($update) {
 862                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 863                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 864                                         normalise_link($contact["url"]), $contact["generation"]];
 865                         $contact["updated"] = DateTimeFormat::utc($contact["updated"]);
 866
 867                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 868                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 869                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 870                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 871                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 872                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 873                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 874                                         'location' => $contact['location'], 'about' => $contact['about'],
 875                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 876                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 877
 878                         DBA::update('gcontact', $updated, $condition, $fields);
 879
 880                         // Now update the contact entry with the user id "0" as well.
 881                         // This is used for the shadow copies of public items.
 882                         /// @todo Check if we really should do this.
 883                         // The quality of the gcontact table is mostly lower than the public contact
 884                         $public_contact = DBA::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 885                         if (DBA::isResult($public_contact)) {
 886                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 887
 888                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 889
 890                                 $fields = ['name', 'nick', 'addr',
 891                                                 'network', 'bd', 'gender',
 892                                                 'keywords', 'alias', 'contact-type',
 893                                                 'url', 'location', 'about'];
 894                                 $old_contact = DBA::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 895
 896                                 // Update it with the current values
 897                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 898                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 899                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 900                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 901                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 902                                                 'location' => $contact['location'], 'about' => $contact['about']];
 903
 904                                 // Don't update the birthday field if not set or invalid
 905                                 if (empty($contact['birthday']) || ($contact['birthday'] < '0001-01-01')) {
 906                                         unset($fields['bd']);
 907                                 }
 908
 909
 910                                 DBA::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 911                         }
 912                 }
 913
 914                 return $gcontact_id;
 915         }
 916
 917         /**
 918          * @brief Updates the gcontact entry from probe
 919          *
 920          * @param string $url profile link
 921          * @return void
 922          */
 923         public static function updateFromProbe($url)
 924         {
 925                 $data = Probe::uri($url);
 926
 927                 if (in_array($data["network"], [Protocol::PHANTOM])) {
 928                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 929                         return;
 930                 }
 931
 932                 $data["server_url"] = $data["baseurl"];
 933
 934                 self::update($data);
 935         }
 936
 937         /**
 938          * @brief Update the gcontact entry for a given user id
 939          *
 940          * @param int $uid User ID
 941          * @return void
 942          */
 943         public static function updateForUser($uid)
 944         {
 945                 $r = q(
 946                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 947                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 948                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 949                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 950                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 951                         FROM `profile`
 952                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 953                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 954                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 955                         intval($uid)
 956                 );
 957
 958                 if (!DBM::is_result($r)) {
 959                         logger('Cannot find user with uid=' . $uid, LOGGER_NORMAL);
 960                         return false;
 961                 }
 962
 963                 $location = Profile::formatLocation(
 964                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 965                 );
 966
 967                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 968                 if ($r[0]["addr"] != "") {
 969                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 970                 } else {
 971                         $addr = $r[0]["addr"];
 972                 }
 973
 974                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 975                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 976                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 977                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 978                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 979                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 980                                 "connect" => $addr, "server_url" => System::baseUrl(),
 981                                 "generation" => 1, "network" => Protocol::DFRN];
 982
 983                 self::update($gcontact);
 984         }
 985
 986         /**
 987          * @brief Fetches users of given GNU Social server
 988          *
 989          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 990          *
 991          * @param string $server Server address
 992          * @return void
 993          */
 994         public static function fetchGsUsers($server)
 995         {
 996                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 997
 998                 $url = $server."/main/statistics";
 999
1000                 $result = Network::curl($url);
1001                 if (!$result["success"]) {
1002                         return false;
1003                 }
1004
1005                 $statistics = json_decode($result["body"]);
1006
1007                 if (!empty($statistics->config)) {
1008                         if ($statistics->config->instance_with_ssl) {
1009                                 $server = "https://";
1010                         } else {
1011                                 $server = "http://";
1012                         }
1013
1014                         $server .= $statistics->config->instance_address;
1015
1016                         $hostname = $statistics->config->instance_address;
1017                 } elseif (!empty($statistics)) {
1018                         if ($statistics->instance_with_ssl) {
1019                                 $server = "https://";
1020                         } else {
1021                                 $server = "http://";
1022                         }
1023
1024                         $server .= $statistics->instance_address;
1025
1026                         $hostname = $statistics->instance_address;
1027                 }
1028
1029                 if (!empty($statistics->users)) {
1030                         foreach ($statistics->users as $nick => $user) {
1031                                 $profile_url = $server."/".$user->nickname;
1032
1033                                 $contact = ["url" => $profile_url,
1034                                                 "name" => $user->fullname,
1035                                                 "addr" => $user->nickname."@".$hostname,
1036                                                 "nick" => $user->nickname,
1037                                                 "network" => Protocol::OSTATUS,
1038                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1039
1040                                 if (isset($user->bio)) {
1041                                         $contact["about"] = $user->bio;
1042                                 }
1043
1044                                 self::getId($contact);
1045                         }
1046                 }
1047         }
1048
1049         /**
1050          * @brief Asking GNU Social server on a regular base for their user data
1051          * @return void
1052          */
1053         public static function discoverGsUsers()
1054         {
1055                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1056
1057                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1058
1059                 $r = q(
1060                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1061                         DBA::escape(Protocol::OSTATUS),
1062                         DBA::escape($last_update)
1063                 );
1064
1065                 if (!DBA::isResult($r)) {
1066                         return;
1067                 }
1068
1069                 foreach ($r as $server) {
1070                         self::fetchGsUsers($server["url"]);
1071                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", DBA::escape(DateTimeFormat::utcNow()), DBA::escape($server["nurl"]));
1072                 }
1073         }
1074
1075         /**
1076          * @return string
1077          */
1078         public static function getRandomUrl()
1079         {
1080                 $r = q(
1081                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1082                                         AND `last_contact` >= `last_failure`
1083                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1084                                 ORDER BY rand() LIMIT 1",
1085                         DBA::escape(Protocol::DFRN)
1086                 );
1087
1088                 if (DBA::isResult($r)) {
1089                         return dirname($r[0]['url']);
1090                 }
1091
1092                 return '';
1093         }
1094 }