src/Model/GContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/GlobalContact.php
   5  * @brief This file includes the GlobalContact class with directory related functions
   6  */
   7 namespace Friendica\Model;
   8
   9 use Friendica\Core\Config;
  10 use Friendica\Core\System;
  11 use Friendica\Core\Worker;
  12 use Friendica\Database\DBM;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Profile;
  15 use Friendica\Network\Probe;
  16 use Friendica\Protocol\PortableContact;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Network;
  19 use dba;
  20 use Exception;
  21
  22 require_once 'include/dba.php';
  23 require_once 'include/html2bbcode.php';
  24
  25 /**
  26  * @brief This class handles GlobalContact related functions
  27  */
  28 class GContact
  29 {
  30         /**
  31          * @brief Search global contact table by nick or name
  32          *
  33          * @param string $search Name or nick
  34          * @param string $mode   Search mode (e.g. "community")
  35          *
  36          * @return array with search results
  37          */
  38         public static function searchByName($search, $mode = '')
  39         {
  40                 if ($search) {
  41                         // check supported networks
  42                         if (Config::get('system', 'diaspora_enabled')) {
  43                                 $diaspora = NETWORK_DIASPORA;
  44                         } else {
  45                                 $diaspora = NETWORK_DFRN;
  46                         }
  47
  48                         if (!Config::get('system', 'ostatus_disabled')) {
  49                                 $ostatus = NETWORK_OSTATUS;
  50                         } else {
  51                                 $ostatus = NETWORK_DFRN;
  52                         }
  53
  54                         // check if we search only communities or every contact
  55                         if ($mode === "community") {
  56                                 $extra_sql = " AND `community`";
  57                         } else {
  58                                 $extra_sql = "";
  59                         }
  60
  61                         $search .= "%";
  62
  63                         $results = q(
  64                                 "SELECT `contact`.`id` AS `cid`, `gcontact`.`url`, `gcontact`.`name`, `gcontact`.`nick`, `gcontact`.`photo`,
  65                                                 `gcontact`.`network`, `gcontact`.`keywords`, `gcontact`.`addr`, `gcontact`.`community`
  66                                 FROM `gcontact`
  67                                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl`
  68                                         AND `contact`.`uid` = %d AND NOT `contact`.`blocked`
  69                                         AND NOT `contact`.`pending` AND `contact`.`rel` IN ('%s', '%s')
  70                                 WHERE (`contact`.`id` > 0 OR (NOT `gcontact`.`hide` AND `gcontact`.`network` IN ('%s', '%s', '%s') AND
  71                                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
  72                                 (`gcontact`.`updated` >= `gcontact`.`last_failure`)))) AND
  73                                 (`gcontact`.`addr` LIKE '%s' OR `gcontact`.`name` LIKE '%s' OR `gcontact`.`nick` LIKE '%s') $extra_sql
  74                                         GROUP BY `gcontact`.`nurl`
  75                                         ORDER BY `gcontact`.`nurl` DESC
  76                                         LIMIT 1000",
  77                                 intval(local_user()),
  78                                 dbesc(CONTACT_IS_SHARING),
  79                                 dbesc(CONTACT_IS_FRIEND),
  80                                 dbesc(NETWORK_DFRN),
  81                                 dbesc($ostatus),
  82                                 dbesc($diaspora),
  83                                 dbesc(escape_tags($search)),
  84                                 dbesc(escape_tags($search)),
  85                                 dbesc(escape_tags($search))
  86                         );
  87
  88                         return $results;
  89                 }
  90         }
  91
  92         /**
  93          * @brief Link the gcontact entry with user, contact and global contact
  94          *
  95          * @param integer $gcid Global contact ID
  96          * @param integer $uid  User ID
  97          * @param integer $cid  Contact ID
  98          * @param integer $zcid Global Contact ID
  99          * @return void
 100          */
 101         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
 102         {
 103                 if ($gcid <= 0) {
 104                         return;
 105                 }
 106
 107                 $r = q(
 108                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 109                         intval($cid),
 110                         intval($uid),
 111                         intval($gcid),
 112                         intval($zcid)
 113                 );
 114
 115                 if (!DBM::is_result($r)) {
 116                         q(
 117                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 118                                 intval($cid),
 119                                 intval($uid),
 120                                 intval($gcid),
 121                                 intval($zcid),
 122                                 dbesc(DateTimeFormat::utcNow())
 123                         );
 124                 } else {
 125                         q(
 126                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 127                                 dbesc(DateTimeFormat::utcNow()),
 128                                 intval($cid),
 129                                 intval($uid),
 130                                 intval($gcid),
 131                                 intval($zcid)
 132                         );
 133                 }
 134         }
 135
 136         /**
 137          * @brief Sanitize the given gcontact data
 138          *
 139          * @param array $gcontact array with gcontact data
 140          * @throw Exception
 141          *
 142          * Generation:
 143          *  0: No definition
 144          *  1: Profiles on this server
 145          *  2: Contacts of profiles on this server
 146          *  3: Contacts of contacts of profiles on this server
 147          *  4: ...
 148          * @return array $gcontact
 149          */
 150         public static function sanitize($gcontact)
 151         {
 152                 if ($gcontact['url'] == "") {
 153                         throw new Exception('URL is empty');
 154                 }
 155
 156                 $urlparts = parse_url($gcontact['url']);
 157                 if (!isset($urlparts["scheme"])) {
 158                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 159                 }
 160
 161                 if (in_array($urlparts["host"], ["www.facebook.com", "facebook.com", "twitter.com", "identi.ca", "alpha.app.net"])) {
 162                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 163                 }
 164
 165                 // Don't store the statusnet connector as network
 166                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 167                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 168                         $gcontact['network'] = "";
 169                 }
 170
 171                 // Assure that there are no parameter fragments in the profile url
 172                 if (in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 173                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 174                 }
 175
 176                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 177
 178                 // The global contacts should contain the original picture, not the cached one
 179                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 180                         $gcontact['photo'] = "";
 181                 }
 182
 183                 if (!isset($gcontact['network'])) {
 184                         $r = q(
 185                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 186                                 dbesc(normalise_link($gcontact['url'])),
 187                                 dbesc(NETWORK_STATUSNET)
 188                         );
 189                         if (DBM::is_result($r)) {
 190                                 $gcontact['network'] = $r[0]["network"];
 191                         }
 192
 193                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 194                                 $r = q(
 195                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 196                                         dbesc($gcontact['url']),
 197                                         dbesc(normalise_link($gcontact['url'])),
 198                                         dbesc(NETWORK_STATUSNET)
 199                                 );
 200                                 if (DBM::is_result($r)) {
 201                                         $gcontact['network'] = $r[0]["network"];
 202                                 }
 203                         }
 204                 }
 205
 206                 $gcontact['server_url'] = '';
 207                 $gcontact['network'] = '';
 208
 209                 $x = q(
 210                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 211                         dbesc(normalise_link($gcontact['url']))
 212                 );
 213
 214                 if (DBM::is_result($x)) {
 215                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 216                                 $gcontact['network'] = $x[0]["network"];
 217                         }
 218                         if ($gcontact['updated'] <= NULL_DATE) {
 219                                 $gcontact['updated'] = $x[0]["updated"];
 220                         }
 221                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 222                                 $gcontact['server_url'] = $x[0]["server_url"];
 223                         }
 224                         if (!isset($gcontact['addr'])) {
 225                                 $gcontact['addr'] = $x[0]["addr"];
 226                         }
 227                 }
 228
 229                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 230                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 231                 ) {
 232                         $data = Probe::uri($gcontact['url']);
 233
 234                         if ($data["network"] == NETWORK_PHANTOM) {
 235                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 236                         }
 237
 238                         $orig_profile = $gcontact['url'];
 239
 240                         $gcontact["server_url"] = $data["baseurl"];
 241
 242                         $gcontact = array_merge($gcontact, $data);
 243
 244                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 245                                 // Delete the old entry - if it exists
 246                                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 247                                 if (DBM::is_result($r)) {
 248                                         q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 249                                         q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 250                                 }
 251                         }
 252                 }
 253
 254                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 255                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 256                 }
 257
 258                 if (!in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA])) {
 259                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 260                 }
 261
 262                 if (!isset($gcontact['server_url'])) {
 263                         // We check the server url to be sure that it is a real one
 264                         $server_url = PortableContact::detectServer($gcontact['url']);
 265
 266                         // We are now sure that it is a correct URL. So we use it in the future
 267                         if ($server_url != "") {
 268                                 $gcontact['server_url'] = $server_url;
 269                         }
 270                 }
 271
 272                 // The server URL doesn't seem to be valid, so we don't store it.
 273                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 274                         $gcontact['server_url'] = "";
 275                 }
 276
 277                 return $gcontact;
 278         }
 279
 280         /**
 281          * @param integer $uid id
 282          * @param integer $cid id
 283          * @return integer
 284          */
 285         public static function countCommonFriends($uid, $cid)
 286         {
 287                 $r = q(
 288                         "SELECT count(*) as `total`
 289                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 290                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 291                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 292                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 293                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 294                         intval($cid),
 295                         intval($uid),
 296                         intval($uid),
 297                         intval($cid)
 298                 );
 299
 300                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 301                 if (DBM::is_result($r)) {
 302                         return $r[0]['total'];
 303                 }
 304                 return 0;
 305         }
 306
 307         /**
 308          * @param integer $uid  id
 309          * @param integer $zcid zcid
 310          * @return integer
 311          */
 312         public static function countCommonFriendsZcid($uid, $zcid)
 313         {
 314                 $r = q(
 315                         "SELECT count(*) as `total`
 316                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 317                         where `glink`.`zcid` = %d
 318                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 319                         intval($zcid),
 320                         intval($uid)
 321                 );
 322
 323                 if (DBM::is_result($r)) {
 324                         return $r[0]['total'];
 325                 }
 326
 327                 return 0;
 328         }
 329
 330         /**
 331          * @param integer $uid     user
 332          * @param integer $cid     cid
 333          * @param integer $start   optional, default 0
 334          * @param integer $limit   optional, default 9999
 335          * @param boolean $shuffle optional, default false
 336          * @return object
 337          */
 338         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 339         {
 340                 if ($shuffle) {
 341                         $sql_extra = " order by rand() ";
 342                 } else {
 343                         $sql_extra = " order by `gcontact`.`name` asc ";
 344                 }
 345
 346                 $r = q(
 347                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 348                         FROM `glink`
 349                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 350                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 351                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 352                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 353                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 354                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 355                                 $sql_extra LIMIT %d, %d",
 356                         intval($cid),
 357                         intval($uid),
 358                         intval($uid),
 359                         intval($cid),
 360                         intval($start),
 361                         intval($limit)
 362                 );
 363
 364                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 365                 return $r;
 366         }
 367
 368         /**
 369          * @param integer $uid     user
 370          * @param integer $zcid    zcid
 371          * @param integer $start   optional, default 0
 372          * @param integer $limit   optional, default 9999
 373          * @param boolean $shuffle optional, default false
 374          * @return object
 375          */
 376         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 377         {
 378                 if ($shuffle) {
 379                         $sql_extra = " order by rand() ";
 380                 } else {
 381                         $sql_extra = " order by `gcontact`.`name` asc ";
 382                 }
 383
 384                 $r = q(
 385                         "SELECT `gcontact`.*
 386                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 387                         where `glink`.`zcid` = %d
 388                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 389                         $sql_extra limit %d, %d",
 390                         intval($zcid),
 391                         intval($uid),
 392                         intval($start),
 393                         intval($limit)
 394                 );
 395
 396                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 397                 return $r;
 398         }
 399
 400         /**
 401          * @param integer $uid user
 402          * @param integer $cid cid
 403          * @return integer
 404          */
 405         public static function countAllFriends($uid, $cid)
 406         {
 407                 $r = q(
 408                         "SELECT count(*) as `total`
 409                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 410                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 411                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 412                         intval($cid),
 413                         intval($uid)
 414                 );
 415
 416                 if (DBM::is_result($r)) {
 417                         return $r[0]['total'];
 418                 }
 419
 420                 return 0;
 421         }
 422
 423         /**
 424          * @param integer $uid   user
 425          * @param integer $cid   cid
 426          * @param integer $start optional, default 0
 427          * @param integer $limit optional, default 80
 428          * @return array
 429          */
 430         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 431         {
 432                 $r = q(
 433                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 434                         FROM `glink`
 435                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 436                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 437                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 438                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 439                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 440                         intval($uid),
 441                         intval($cid),
 442                         intval($uid),
 443                         intval($start),
 444                         intval($limit)
 445                 );
 446
 447                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 448                 return $r;
 449         }
 450
 451         /**
 452          * @param object  $uid   user
 453          * @param integer $start optional, default 0
 454          * @param integer $limit optional, default 80
 455          * @return array
 456          */
 457         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 458         {
 459                 if (!$uid) {
 460                         return [];
 461                 }
 462
 463                 /*
 464                 * Uncommented because the result of the queries are to big to store it in the cache.
 465                 * We need to decide if we want to change the db column type or if we want to delete it.
 466                 */
 467                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 468                 //if (!is_null($list)) {
 469                 //      return $list;
 470                 //}
 471
 472                 $network = [NETWORK_DFRN];
 473
 474                 if (Config::get('system', 'diaspora_enabled')) {
 475                         $network[] = NETWORK_DIASPORA;
 476                 }
 477
 478                 if (!Config::get('system', 'ostatus_disabled')) {
 479                         $network[] = NETWORK_OSTATUS;
 480                 }
 481
 482                 $sql_network = implode("', '", $network);
 483                 $sql_network = "'".$sql_network."'";
 484
 485                 /// @todo This query is really slow
 486                 // By now we cache the data for five minutes
 487                 $r = q(
 488                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 489                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 490                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 491                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 492                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 493                         AND `gcontact`.`updated` >= '%s'
 494                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 495                         AND `gcontact`.`network` IN (%s)
 496                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 497                         intval($uid),
 498                         intval($uid),
 499                         intval($uid),
 500                         intval($uid),
 501                         dbesc(NULL_DATE),
 502                         $sql_network,
 503                         intval($start),
 504                         intval($limit)
 505                 );
 506
 507                 if (DBM::is_result($r) && count($r) >= ($limit -1)) {
 508                         /*
 509                         * Uncommented because the result of the queries are to big to store it in the cache.
 510                         * We need to decide if we want to change the db column type or if we want to delete it.
 511                         */
 512                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 513
 514                         return $r;
 515                 }
 516
 517                 $r2 = q(
 518                         "SELECT gcontact.* FROM gcontact
 519                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 520                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 521                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 522                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 523                         AND `gcontact`.`updated` >= '%s'
 524                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 525                         AND `gcontact`.`network` IN (%s)
 526                         ORDER BY rand() LIMIT %d, %d",
 527                         intval($uid),
 528                         intval($uid),
 529                         intval($uid),
 530                         dbesc(NULL_DATE),
 531                         $sql_network,
 532                         intval($start),
 533                         intval($limit)
 534                 );
 535
 536                 $list = [];
 537                 foreach ($r2 as $suggestion) {
 538                         $list[$suggestion["nurl"]] = $suggestion;
 539                 }
 540
 541                 foreach ($r as $suggestion) {
 542                         $list[$suggestion["nurl"]] = $suggestion;
 543                 }
 544
 545                 while (sizeof($list) > ($limit)) {
 546                         array_pop($list);
 547                 }
 548
 549                 /*
 550                 * Uncommented because the result of the queries are to big to store it in the cache.
 551                 * We need to decide if we want to change the db column type or if we want to delete it.
 552                 */
 553                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 554                 return $list;
 555         }
 556
 557         /**
 558          * @return void
 559          */
 560         public static function updateSuggestions()
 561         {
 562                 $a = get_app();
 563
 564                 $done = [];
 565
 566                 /// @TODO Check if it is really neccessary to poll the own server
 567                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 568
 569                 $done[] = System::baseUrl() . '/poco';
 570
 571                 if (strlen(Config::get('system', 'directory'))) {
 572                         $x = Network::fetchUrl(get_server()."/pubsites");
 573                         if ($x) {
 574                                 $j = json_decode($x);
 575                                 if ($j->entries) {
 576                                         foreach ($j->entries as $entry) {
 577                                                 PortableContact::checkServer($entry->url);
 578
 579                                                 $url = $entry->url . '/poco';
 580                                                 if (! in_array($url, $done)) {
 581                                                         PortableContact::loadWorker(0, 0, 0, $entry->url . '/poco');
 582                                                 }
 583                                         }
 584                                 }
 585                         }
 586                 }
 587
 588                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 589                 $r = q(
 590                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 591                         dbesc(NETWORK_DFRN),
 592                         dbesc(NETWORK_DIASPORA)
 593                 );
 594
 595                 if (DBM::is_result($r)) {
 596                         foreach ($r as $rr) {
 597                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 598                                 if (! in_array($base, $done)) {
 599                                         PortableContact::loadWorker(0, 0, 0, $base);
 600                                 }
 601                         }
 602                 }
 603         }
 604
 605         /**
 606          * @brief Removes unwanted parts from a contact url
 607          *
 608          * @param string $url Contact url
 609          *
 610          * @return string Contact url with the wanted parts
 611          */
 612         public static function cleanContactUrl($url)
 613         {
 614                 $parts = parse_url($url);
 615
 616                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 617                         return $url;
 618                 }
 619
 620                 $new_url = $parts["scheme"]."://".$parts["host"];
 621
 622                 if (isset($parts["port"])) {
 623                         $new_url .= ":".$parts["port"];
 624                 }
 625
 626                 if (isset($parts["path"])) {
 627                         $new_url .= $parts["path"];
 628                 }
 629
 630                 if ($new_url != $url) {
 631                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 632                 }
 633
 634                 return $new_url;
 635         }
 636
 637         /**
 638          * @brief Replace alternate OStatus user format with the primary one
 639          *
 640          * @param array $contact contact array (called by reference)
 641          * @return void
 642          */
 643         public static function fixAlternateContactAddress(&$contact)
 644         {
 645                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 646                         $data = Probe::uri($contact["url"]);
 647                         if ($contact["network"] == NETWORK_OSTATUS) {
 648                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 649                                 $contact["url"] = $data["url"];
 650                                 $contact["addr"] = $data["addr"];
 651                                 $contact["alias"] = $data["alias"];
 652                                 $contact["server_url"] = $data["baseurl"];
 653                         }
 654                 }
 655         }
 656
 657         /**
 658          * @brief Fetch the gcontact id, add an entry if not existed
 659          *
 660          * @param array $contact contact array
 661          *
 662          * @return bool|int Returns false if not found, integer if contact was found
 663          */
 664         public static function getId($contact)
 665         {
 666                 $gcontact_id = 0;
 667                 $doprobing = false;
 668
 669                 if (in_array($contact["network"], [NETWORK_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"] == NETWORK_STATUSNET) {
 675                         $contact["network"] = NETWORK_OSTATUS;
 676                 }
 677
 678                 // All new contacts are hidden by default
 679                 if (!isset($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"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 688                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 689                 }
 690
 691                 dba::lock('gcontact');
 692                 $r = q(
 693                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 694                         dbesc(normalise_link($contact["url"]))
 695                 );
 696
 697                 if (DBM::is_result($r)) {
 698                         $gcontact_id = $r[0]["id"];
 699
 700                         // Update every 90 days
 701                         if (in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_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() - $last_failure) > (90 * 86400)));
 707                         }
 708                 } else {
 709                         q(
 710                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 711                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 712                                 dbesc($contact["name"]),
 713                                 dbesc($contact["nick"]),
 714                                 dbesc($contact["addr"]),
 715                                 dbesc($contact["network"]),
 716                                 dbesc($contact["url"]),
 717                                 dbesc(normalise_link($contact["url"])),
 718                                 dbesc($contact["photo"]),
 719                                 dbesc(DateTimeFormat::utcNow()),
 720                                 dbesc(DateTimeFormat::utcNow()),
 721                                 dbesc($contact["location"]),
 722                                 dbesc($contact["about"]),
 723                                 intval($contact["hide"]),
 724                                 intval($contact["generation"])
 725                         );
 726
 727                         $r = q(
 728                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 729                                 dbesc(normalise_link($contact["url"]))
 730                         );
 731
 732                         if (DBM::is_result($r)) {
 733                                 $gcontact_id = $r[0]["id"];
 734
 735                                 $doprobing = in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""]);
 736                         }
 737                 }
 738                 dba::unlock();
 739
 740                 if ($doprobing) {
 741                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 742                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 743                 }
 744
 745                 return $gcontact_id;
 746         }
 747
 748         /**
 749          * @brief Updates the gcontact table from a given array
 750          *
 751          * @param array $contact contact array
 752          *
 753          * @return bool|int Returns false if not found, integer if contact was found
 754          */
 755         public static function update($contact)
 756         {
 757                 // Check for invalid "contact-type" value
 758                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 759                         $contact['contact-type'] = 0;
 760                 }
 761
 762                 /// @todo update contact table as well
 763
 764                 $gcontact_id = self::getId($contact);
 765
 766                 if (!$gcontact_id) {
 767                         return false;
 768                 }
 769
 770                 $public_contact = q(
 771                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 772                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 773                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 774                         intval($gcontact_id)
 775                 );
 776
 777                 // Get all field names
 778                 $fields = [];
 779                 foreach ($public_contact[0] as $field => $data) {
 780                         $fields[$field] = $data;
 781                 }
 782
 783                 unset($fields["url"]);
 784                 unset($fields["updated"]);
 785                 unset($fields["hide"]);
 786
 787                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 788                 // This value is still transmitted via poco.
 789                 if ($contact["keywords"] == "0") {
 790                         unset($contact["keywords"]);
 791                 }
 792
 793                 if ($public_contact[0]["keywords"] == "0") {
 794                         $public_contact[0]["keywords"] = "";
 795                 }
 796
 797                 // assign all unassigned fields from the database entry
 798                 foreach ($fields as $field => $data) {
 799                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 800                                 $contact[$field] = $public_contact[0][$field];
 801                         }
 802                 }
 803
 804                 if (!isset($contact["hide"])) {
 805                         $contact["hide"] = $public_contact[0]["hide"];
 806                 }
 807
 808                 $fields["hide"] = $public_contact[0]["hide"];
 809
 810                 if ($contact["network"] == NETWORK_STATUSNET) {
 811                         $contact["network"] = NETWORK_OSTATUS;
 812                 }
 813
 814                 // Replace alternate OStatus user format with the primary one
 815                 self::fixAlternateContactAddress($contact);
 816
 817                 if (!isset($contact["updated"])) {
 818                         $contact["updated"] = DBM::date();
 819                 }
 820
 821                 if ($contact["network"] == NETWORK_TWITTER) {
 822                         $contact["server_url"] = 'http://twitter.com';
 823                 }
 824
 825                 if ($contact["server_url"] == "") {
 826                         $data = Probe::uri($contact["url"]);
 827                         if ($data["network"] != NETWORK_PHANTOM) {
 828                                 $contact["server_url"] = $data['baseurl'];
 829                         }
 830                 } else {
 831                         $contact["server_url"] = normalise_link($contact["server_url"]);
 832                 }
 833
 834                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 835                         $hostname = str_replace("http://", "", $contact["server_url"]);
 836                         $contact["addr"] = $contact["nick"]."@".$hostname;
 837                 }
 838
 839                 // Check if any field changed
 840                 $update = false;
 841                 unset($fields["generation"]);
 842
 843                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 844                         foreach ($fields as $field => $data) {
 845                                 if ($contact[$field] != $public_contact[0][$field]) {
 846                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 847                                         $update = true;
 848                                 }
 849                         }
 850
 851                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 852                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 853                                 $update = true;
 854                         }
 855                 }
 856
 857                 if ($update) {
 858                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 859                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 860                                         normalise_link($contact["url"]), $contact["generation"]];
 861                         $contact["updated"] = DBM::date($contact["updated"]);
 862
 863                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 864                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 865                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 866                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 867                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 868                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 869                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 870                                         'location' => $contact['location'], 'about' => $contact['about'],
 871                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 872                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 873
 874                         dba::update('gcontact', $updated, $condition, $fields);
 875
 876                         // Now update the contact entry with the user id "0" as well.
 877                         // This is used for the shadow copies of public items.
 878
 879                         $public_contact = dba::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 880                         if (DBM::is_result($public_contact)) {
 881                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 882
 883                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 884
 885                                 $fields = ['name', 'nick', 'addr',
 886                                                 'network', 'bd', 'gender',
 887                                                 'keywords', 'alias', 'contact-type',
 888                                                 'url', 'location', 'about'];
 889                                 $old_contact = dba::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 890
 891                                 // Update it with the current values
 892                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 893                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 894                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 895                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 896                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 897                                                 'location' => $contact['location'], 'about' => $contact['about']];
 898
 899                                 dba::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 900                         }
 901                 }
 902
 903                 return $gcontact_id;
 904         }
 905
 906         /**
 907          * @brief Updates the gcontact entry from probe
 908          *
 909          * @param string $url profile link
 910          * @return void
 911          */
 912         public static function updateFromProbe($url)
 913         {
 914                 $data = Probe::uri($url);
 915
 916                 if (in_array($data["network"], [NETWORK_PHANTOM])) {
 917                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 918                         return;
 919                 }
 920
 921                 $data["server_url"] = $data["baseurl"];
 922
 923                 self::update($data);
 924         }
 925
 926         /**
 927          * @brief Update the gcontact entry for a given user id
 928          *
 929          * @param int $uid User ID
 930          * @return void
 931          */
 932         public static function updateForUser($uid)
 933         {
 934                 $r = q(
 935                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 936                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 937                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 938                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 939                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 940                         FROM `profile`
 941                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 942                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 943                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 944                         intval($uid)
 945                 );
 946
 947                 $location = Profile::formatLocation(
 948                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 949                 );
 950
 951                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 952                 if ($r[0]["addr"] != "") {
 953                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 954                 } else {
 955                         $addr = $r[0]["addr"];
 956                 }
 957
 958                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 959                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 960                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 961                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 962                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 963                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 964                                 "connect" => $addr, "server_url" => System::baseUrl(),
 965                                 "generation" => 1, "network" => NETWORK_DFRN];
 966
 967                 self::update($gcontact);
 968         }
 969
 970         /**
 971          * @brief Fetches users of given GNU Social server
 972          *
 973          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 974          *
 975          * @param string $server Server address
 976          * @return void
 977          */
 978         public static function fetchGsUsers($server)
 979         {
 980                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 981
 982                 $url = $server."/main/statistics";
 983
 984                 $result = Network::curl($url);
 985                 if (!$result["success"]) {
 986                         return false;
 987                 }
 988
 989                 $statistics = json_decode($result["body"]);
 990
 991                 if (is_object($statistics->config)) {
 992                         if ($statistics->config->instance_with_ssl) {
 993                                 $server = "https://";
 994                         } else {
 995                                 $server = "http://";
 996                         }
 997
 998                         $server .= $statistics->config->instance_address;
 999
1000                         $hostname = $statistics->config->instance_address;
1001                 } else {
1002                         /// @TODO is_object() above means here no object, still $statistics is being used as object
1003                         if ($statistics->instance_with_ssl) {
1004                                 $server = "https://";
1005                         } else {
1006                                 $server = "http://";
1007                         }
1008
1009                         $server .= $statistics->instance_address;
1010
1011                         $hostname = $statistics->instance_address;
1012                 }
1013
1014                 if (is_object($statistics->users)) {
1015                         foreach ($statistics->users as $nick => $user) {
1016                                 $profile_url = $server."/".$user->nickname;
1017
1018                                 $contact = ["url" => $profile_url,
1019                                                 "name" => $user->fullname,
1020                                                 "addr" => $user->nickname."@".$hostname,
1021                                                 "nick" => $user->nickname,
1022                                                 "about" => $user->bio,
1023                                                 "network" => NETWORK_OSTATUS,
1024                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1025                                 self::getId($contact);
1026                         }
1027                 }
1028         }
1029
1030         /**
1031          * @brief Asking GNU Social server on a regular base for their user data
1032          * @return void
1033          */
1034         public static function discoverGsUsers()
1035         {
1036                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1037
1038                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1039
1040                 $r = q(
1041                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1042                         dbesc(NETWORK_OSTATUS),
1043                         dbesc($last_update)
1044                 );
1045
1046                 if (!DBM::is_result($r)) {
1047                         return;
1048                 }
1049
1050                 foreach ($r as $server) {
1051                         self::fetchGsUsers($server["url"]);
1052                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(DateTimeFormat::utcNow()), dbesc($server["nurl"]));
1053                 }
1054         }
1055
1056         /**
1057          * @return string
1058          */
1059         public static function getRandomUrl()
1060         {
1061                 $r = q(
1062                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1063                                         AND `last_contact` >= `last_failure`
1064                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1065                                 ORDER BY rand() LIMIT 1",
1066                         dbesc(NETWORK_DFRN)
1067                 );
1068
1069                 if (DBM::is_result($r)) {
1070                         return dirname($r[0]['url']);
1071                 }
1072
1073                 return '';
1074         }
1075 }