src/Model/GContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/GlobalContact.php
   5  * @brief This file includes the GlobalContact class with directory related functions
   6  */
   7 namespace Friendica\Model;
   8
   9 use Friendica\Core\Config;
  10 use Friendica\Core\System;
  11 use Friendica\Core\Worker;
  12 use Friendica\Database\DBM;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Profile;
  15 use Friendica\Network\Probe;
  16 use Friendica\Protocol\PortableContact;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Network;
  19 use dba;
  20 use Exception;
  21
  22 require_once 'include/dba.php';
  23
  24 /**
  25  * @brief This class handles GlobalContact related functions
  26  */
  27 class GContact
  28 {
  29         /**
  30          * @brief Search global contact table by nick or name
  31          *
  32          * @param string $search Name or nick
  33          * @param string $mode   Search mode (e.g. "community")
  34          *
  35          * @return array with search results
  36          */
  37         public static function searchByName($search, $mode = '')
  38         {
  39                 if ($search) {
  40                         // check supported networks
  41                         if (Config::get('system', 'diaspora_enabled')) {
  42                                 $diaspora = NETWORK_DIASPORA;
  43                         } else {
  44                                 $diaspora = NETWORK_DFRN;
  45                         }
  46
  47                         if (!Config::get('system', 'ostatus_disabled')) {
  48                                 $ostatus = NETWORK_OSTATUS;
  49                         } else {
  50                                 $ostatus = NETWORK_DFRN;
  51                         }
  52
  53                         // check if we search only communities or every contact
  54                         if ($mode === "community") {
  55                                 $extra_sql = " AND `community`";
  56                         } else {
  57                                 $extra_sql = "";
  58                         }
  59
  60                         $search .= "%";
  61
  62                         $results = q(
  63                                 "SELECT `contact`.`id` AS `cid`, `gcontact`.`url`, `gcontact`.`name`, `gcontact`.`nick`, `gcontact`.`photo`,
  64                                                 `gcontact`.`network`, `gcontact`.`keywords`, `gcontact`.`addr`, `gcontact`.`community`
  65                                 FROM `gcontact`
  66                                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl`
  67                                         AND `contact`.`uid` = %d AND NOT `contact`.`blocked`
  68                                         AND NOT `contact`.`pending` AND `contact`.`rel` IN ('%s', '%s')
  69                                 WHERE (`contact`.`id` > 0 OR (NOT `gcontact`.`hide` AND `gcontact`.`network` IN ('%s', '%s', '%s') AND
  70                                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
  71                                 (`gcontact`.`updated` >= `gcontact`.`last_failure`)))) AND
  72                                 (`gcontact`.`addr` LIKE '%s' OR `gcontact`.`name` LIKE '%s' OR `gcontact`.`nick` LIKE '%s') $extra_sql
  73                                         GROUP BY `gcontact`.`nurl`
  74                                         ORDER BY `gcontact`.`nurl` DESC
  75                                         LIMIT 1000",
  76                                 intval(local_user()),
  77                                 dbesc(CONTACT_IS_SHARING),
  78                                 dbesc(CONTACT_IS_FRIEND),
  79                                 dbesc(NETWORK_DFRN),
  80                                 dbesc($ostatus),
  81                                 dbesc($diaspora),
  82                                 dbesc(escape_tags($search)),
  83                                 dbesc(escape_tags($search)),
  84                                 dbesc(escape_tags($search))
  85                         );
  86
  87                         return $results;
  88                 }
  89         }
  90
  91         /**
  92          * @brief Link the gcontact entry with user, contact and global contact
  93          *
  94          * @param integer $gcid Global contact ID
  95          * @param integer $uid  User ID
  96          * @param integer $cid  Contact ID
  97          * @param integer $zcid Global Contact ID
  98          * @return void
  99          */
 100         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
 101         {
 102                 if ($gcid <= 0) {
 103                         return;
 104                 }
 105
 106                 $r = q(
 107                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 108                         intval($cid),
 109                         intval($uid),
 110                         intval($gcid),
 111                         intval($zcid)
 112                 );
 113
 114                 if (!DBM::is_result($r)) {
 115                         q(
 116                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 117                                 intval($cid),
 118                                 intval($uid),
 119                                 intval($gcid),
 120                                 intval($zcid),
 121                                 dbesc(DateTimeFormat::utcNow())
 122                         );
 123                 } else {
 124                         q(
 125                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 126                                 dbesc(DateTimeFormat::utcNow()),
 127                                 intval($cid),
 128                                 intval($uid),
 129                                 intval($gcid),
 130                                 intval($zcid)
 131                         );
 132                 }
 133         }
 134
 135         /**
 136          * @brief Sanitize the given gcontact data
 137          *
 138          * @param array $gcontact array with gcontact data
 139          * @throw Exception
 140          *
 141          * Generation:
 142          *  0: No definition
 143          *  1: Profiles on this server
 144          *  2: Contacts of profiles on this server
 145          *  3: Contacts of contacts of profiles on this server
 146          *  4: ...
 147          * @return array $gcontact
 148          */
 149         public static function sanitize($gcontact)
 150         {
 151                 if ($gcontact['url'] == "") {
 152                         throw new Exception('URL is empty');
 153                 }
 154
 155                 $urlparts = parse_url($gcontact['url']);
 156                 if (!isset($urlparts["scheme"])) {
 157                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 158                 }
 159
 160                 if (in_array($urlparts["host"], ["www.facebook.com", "facebook.com", "twitter.com", "identi.ca", "alpha.app.net"])) {
 161                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 162                 }
 163
 164                 // Don't store the statusnet connector as network
 165                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 166                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 167                         $gcontact['network'] = "";
 168                 }
 169
 170                 // Assure that there are no parameter fragments in the profile url
 171                 if (in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 172                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 173                 }
 174
 175                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 176
 177                 // The global contacts should contain the original picture, not the cached one
 178                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 179                         $gcontact['photo'] = "";
 180                 }
 181
 182                 if (!isset($gcontact['network'])) {
 183                         $r = q(
 184                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 185                                 dbesc(normalise_link($gcontact['url'])),
 186                                 dbesc(NETWORK_STATUSNET)
 187                         );
 188                         if (DBM::is_result($r)) {
 189                                 $gcontact['network'] = $r[0]["network"];
 190                         }
 191
 192                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 193                                 $r = q(
 194                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 195                                         dbesc($gcontact['url']),
 196                                         dbesc(normalise_link($gcontact['url'])),
 197                                         dbesc(NETWORK_STATUSNET)
 198                                 );
 199                                 if (DBM::is_result($r)) {
 200                                         $gcontact['network'] = $r[0]["network"];
 201                                 }
 202                         }
 203                 }
 204
 205                 $gcontact['server_url'] = '';
 206                 $gcontact['network'] = '';
 207
 208                 $x = q(
 209                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 210                         dbesc(normalise_link($gcontact['url']))
 211                 );
 212
 213                 if (DBM::is_result($x)) {
 214                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 215                                 $gcontact['network'] = $x[0]["network"];
 216                         }
 217                         if ($gcontact['updated'] <= NULL_DATE) {
 218                                 $gcontact['updated'] = $x[0]["updated"];
 219                         }
 220                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 221                                 $gcontact['server_url'] = $x[0]["server_url"];
 222                         }
 223                         if (!isset($gcontact['addr'])) {
 224                                 $gcontact['addr'] = $x[0]["addr"];
 225                         }
 226                 }
 227
 228                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 229                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 230                 ) {
 231                         $data = Probe::uri($gcontact['url']);
 232
 233                         if ($data["network"] == NETWORK_PHANTOM) {
 234                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 235                         }
 236
 237                         $orig_profile = $gcontact['url'];
 238
 239                         $gcontact["server_url"] = $data["baseurl"];
 240
 241                         $gcontact = array_merge($gcontact, $data);
 242
 243                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 244                                 // Delete the old entry - if it exists
 245                                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 246                                 if (DBM::is_result($r)) {
 247                                         q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 248                                         q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 249                                 }
 250                         }
 251                 }
 252
 253                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 254                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 255                 }
 256
 257                 if (!in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA])) {
 258                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 259                 }
 260
 261                 if (!isset($gcontact['server_url'])) {
 262                         // We check the server url to be sure that it is a real one
 263                         $server_url = PortableContact::detectServer($gcontact['url']);
 264
 265                         // We are now sure that it is a correct URL. So we use it in the future
 266                         if ($server_url != "") {
 267                                 $gcontact['server_url'] = $server_url;
 268                         }
 269                 }
 270
 271                 // The server URL doesn't seem to be valid, so we don't store it.
 272                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 273                         $gcontact['server_url'] = "";
 274                 }
 275
 276                 return $gcontact;
 277         }
 278
 279         /**
 280          * @param integer $uid id
 281          * @param integer $cid id
 282          * @return integer
 283          */
 284         public static function countCommonFriends($uid, $cid)
 285         {
 286                 $r = q(
 287                         "SELECT count(*) as `total`
 288                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 289                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 290                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 291                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 292                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 293                         intval($cid),
 294                         intval($uid),
 295                         intval($uid),
 296                         intval($cid)
 297                 );
 298
 299                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 300                 if (DBM::is_result($r)) {
 301                         return $r[0]['total'];
 302                 }
 303                 return 0;
 304         }
 305
 306         /**
 307          * @param integer $uid  id
 308          * @param integer $zcid zcid
 309          * @return integer
 310          */
 311         public static function countCommonFriendsZcid($uid, $zcid)
 312         {
 313                 $r = q(
 314                         "SELECT count(*) as `total`
 315                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 316                         where `glink`.`zcid` = %d
 317                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 318                         intval($zcid),
 319                         intval($uid)
 320                 );
 321
 322                 if (DBM::is_result($r)) {
 323                         return $r[0]['total'];
 324                 }
 325
 326                 return 0;
 327         }
 328
 329         /**
 330          * @param integer $uid     user
 331          * @param integer $cid     cid
 332          * @param integer $start   optional, default 0
 333          * @param integer $limit   optional, default 9999
 334          * @param boolean $shuffle optional, default false
 335          * @return object
 336          */
 337         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 338         {
 339                 if ($shuffle) {
 340                         $sql_extra = " order by rand() ";
 341                 } else {
 342                         $sql_extra = " order by `gcontact`.`name` asc ";
 343                 }
 344
 345                 $r = q(
 346                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 347                         FROM `glink`
 348                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 349                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 350                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 351                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 352                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 353                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 354                                 $sql_extra LIMIT %d, %d",
 355                         intval($cid),
 356                         intval($uid),
 357                         intval($uid),
 358                         intval($cid),
 359                         intval($start),
 360                         intval($limit)
 361                 );
 362
 363                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 364                 return $r;
 365         }
 366
 367         /**
 368          * @param integer $uid     user
 369          * @param integer $zcid    zcid
 370          * @param integer $start   optional, default 0
 371          * @param integer $limit   optional, default 9999
 372          * @param boolean $shuffle optional, default false
 373          * @return object
 374          */
 375         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 376         {
 377                 if ($shuffle) {
 378                         $sql_extra = " order by rand() ";
 379                 } else {
 380                         $sql_extra = " order by `gcontact`.`name` asc ";
 381                 }
 382
 383                 $r = q(
 384                         "SELECT `gcontact`.*
 385                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 386                         where `glink`.`zcid` = %d
 387                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 388                         $sql_extra limit %d, %d",
 389                         intval($zcid),
 390                         intval($uid),
 391                         intval($start),
 392                         intval($limit)
 393                 );
 394
 395                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 396                 return $r;
 397         }
 398
 399         /**
 400          * @param integer $uid user
 401          * @param integer $cid cid
 402          * @return integer
 403          */
 404         public static function countAllFriends($uid, $cid)
 405         {
 406                 $r = q(
 407                         "SELECT count(*) as `total`
 408                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 409                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 410                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 411                         intval($cid),
 412                         intval($uid)
 413                 );
 414
 415                 if (DBM::is_result($r)) {
 416                         return $r[0]['total'];
 417                 }
 418
 419                 return 0;
 420         }
 421
 422         /**
 423          * @param integer $uid   user
 424          * @param integer $cid   cid
 425          * @param integer $start optional, default 0
 426          * @param integer $limit optional, default 80
 427          * @return array
 428          */
 429         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 430         {
 431                 $r = q(
 432                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 433                         FROM `glink`
 434                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 435                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 436                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 437                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 438                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 439                         intval($uid),
 440                         intval($cid),
 441                         intval($uid),
 442                         intval($start),
 443                         intval($limit)
 444                 );
 445
 446                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 447                 return $r;
 448         }
 449
 450         /**
 451          * @param object  $uid   user
 452          * @param integer $start optional, default 0
 453          * @param integer $limit optional, default 80
 454          * @return array
 455          */
 456         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 457         {
 458                 if (!$uid) {
 459                         return [];
 460                 }
 461
 462                 /*
 463                 * Uncommented because the result of the queries are to big to store it in the cache.
 464                 * We need to decide if we want to change the db column type or if we want to delete it.
 465                 */
 466                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 467                 //if (!is_null($list)) {
 468                 //      return $list;
 469                 //}
 470
 471                 $network = [NETWORK_DFRN];
 472
 473                 if (Config::get('system', 'diaspora_enabled')) {
 474                         $network[] = NETWORK_DIASPORA;
 475                 }
 476
 477                 if (!Config::get('system', 'ostatus_disabled')) {
 478                         $network[] = NETWORK_OSTATUS;
 479                 }
 480
 481                 $sql_network = implode("', '", $network);
 482                 $sql_network = "'".$sql_network."'";
 483
 484                 /// @todo This query is really slow
 485                 // By now we cache the data for five minutes
 486                 $r = q(
 487                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 488                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 489                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 490                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 491                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 492                         AND `gcontact`.`updated` >= '%s'
 493                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 494                         AND `gcontact`.`network` IN (%s)
 495                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 496                         intval($uid),
 497                         intval($uid),
 498                         intval($uid),
 499                         intval($uid),
 500                         dbesc(NULL_DATE),
 501                         $sql_network,
 502                         intval($start),
 503                         intval($limit)
 504                 );
 505
 506                 if (DBM::is_result($r) && count($r) >= ($limit -1)) {
 507                         /*
 508                         * Uncommented because the result of the queries are to big to store it in the cache.
 509                         * We need to decide if we want to change the db column type or if we want to delete it.
 510                         */
 511                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 512
 513                         return $r;
 514                 }
 515
 516                 $r2 = q(
 517                         "SELECT gcontact.* FROM gcontact
 518                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 519                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 520                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 521                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 522                         AND `gcontact`.`updated` >= '%s'
 523                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 524                         AND `gcontact`.`network` IN (%s)
 525                         ORDER BY rand() LIMIT %d, %d",
 526                         intval($uid),
 527                         intval($uid),
 528                         intval($uid),
 529                         dbesc(NULL_DATE),
 530                         $sql_network,
 531                         intval($start),
 532                         intval($limit)
 533                 );
 534
 535                 $list = [];
 536                 foreach ($r2 as $suggestion) {
 537                         $list[$suggestion["nurl"]] = $suggestion;
 538                 }
 539
 540                 foreach ($r as $suggestion) {
 541                         $list[$suggestion["nurl"]] = $suggestion;
 542                 }
 543
 544                 while (sizeof($list) > ($limit)) {
 545                         array_pop($list);
 546                 }
 547
 548                 /*
 549                 * Uncommented because the result of the queries are to big to store it in the cache.
 550                 * We need to decide if we want to change the db column type or if we want to delete it.
 551                 */
 552                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 553                 return $list;
 554         }
 555
 556         /**
 557          * @return void
 558          */
 559         public static function updateSuggestions()
 560         {
 561                 $a = get_app();
 562
 563                 $done = [];
 564
 565                 /// @TODO Check if it is really neccessary to poll the own server
 566                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 567
 568                 $done[] = System::baseUrl() . '/poco';
 569
 570                 if (strlen(Config::get('system', 'directory'))) {
 571                         $x = Network::fetchUrl(get_server()."/pubsites");
 572                         if ($x) {
 573                                 $j = json_decode($x);
 574                                 if ($j->entries) {
 575                                         foreach ($j->entries as $entry) {
 576                                                 PortableContact::checkServer($entry->url);
 577
 578                                                 $url = $entry->url . '/poco';
 579                                                 if (! in_array($url, $done)) {
 580                                                         PortableContact::loadWorker(0, 0, 0, $entry->url . '/poco');
 581                                                 }
 582                                         }
 583                                 }
 584                         }
 585                 }
 586
 587                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 588                 $r = q(
 589                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 590                         dbesc(NETWORK_DFRN),
 591                         dbesc(NETWORK_DIASPORA)
 592                 );
 593
 594                 if (DBM::is_result($r)) {
 595                         foreach ($r as $rr) {
 596                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 597                                 if (! in_array($base, $done)) {
 598                                         PortableContact::loadWorker(0, 0, 0, $base);
 599                                 }
 600                         }
 601                 }
 602         }
 603
 604         /**
 605          * @brief Removes unwanted parts from a contact url
 606          *
 607          * @param string $url Contact url
 608          *
 609          * @return string Contact url with the wanted parts
 610          */
 611         public static function cleanContactUrl($url)
 612         {
 613                 $parts = parse_url($url);
 614
 615                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 616                         return $url;
 617                 }
 618
 619                 $new_url = $parts["scheme"]."://".$parts["host"];
 620
 621                 if (isset($parts["port"])) {
 622                         $new_url .= ":".$parts["port"];
 623                 }
 624
 625                 if (isset($parts["path"])) {
 626                         $new_url .= $parts["path"];
 627                 }
 628
 629                 if ($new_url != $url) {
 630                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 631                 }
 632
 633                 return $new_url;
 634         }
 635
 636         /**
 637          * @brief Replace alternate OStatus user format with the primary one
 638          *
 639          * @param array $contact contact array (called by reference)
 640          * @return void
 641          */
 642         public static function fixAlternateContactAddress(&$contact)
 643         {
 644                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 645                         $data = Probe::uri($contact["url"]);
 646                         if ($contact["network"] == NETWORK_OSTATUS) {
 647                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 648                                 $contact["url"] = $data["url"];
 649                                 $contact["addr"] = $data["addr"];
 650                                 $contact["alias"] = $data["alias"];
 651                                 $contact["server_url"] = $data["baseurl"];
 652                         }
 653                 }
 654         }
 655
 656         /**
 657          * @brief Fetch the gcontact id, add an entry if not existed
 658          *
 659          * @param array $contact contact array
 660          *
 661          * @return bool|int Returns false if not found, integer if contact was found
 662          */
 663         public static function getId($contact)
 664         {
 665                 $gcontact_id = 0;
 666                 $doprobing = false;
 667                 $last_failure_str = '';
 668                 $last_contact_str = '';
 669
 670                 if (in_array($contact["network"], [NETWORK_PHANTOM])) {
 671                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 672                         return false;
 673                 }
 674
 675                 if ($contact["network"] == NETWORK_STATUSNET) {
 676                         $contact["network"] = NETWORK_OSTATUS;
 677                 }
 678
 679                 // All new contacts are hidden by default
 680                 if (!isset($contact["hide"])) {
 681                         $contact["hide"] = true;
 682                 }
 683
 684                 // Replace alternate OStatus user format with the primary one
 685                 self::fixAlternateContactAddress($contact);
 686
 687                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 688                 if (in_array($contact["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 689                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 690                 }
 691
 692                 dba::lock('gcontact');
 693                 $r = q(
 694                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 695                         dbesc(normalise_link($contact["url"]))
 696                 );
 697
 698                 if (DBM::is_result($r)) {
 699                         $gcontact_id = $r[0]["id"];
 700
 701                         // Update every 90 days
 702                         if (in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 703                                 $last_failure_str = $r[0]["last_failure"];
 704                                 $last_failure = strtotime($r[0]["last_failure"]);
 705                                 $last_contact_str = $r[0]["last_contact"];
 706                                 $last_contact = strtotime($r[0]["last_contact"]);
 707                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 708                         }
 709                 } else {
 710                         q(
 711                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 712                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 713                                 dbesc($contact["name"]),
 714                                 dbesc($contact["nick"]),
 715                                 dbesc($contact["addr"]),
 716                                 dbesc($contact["network"]),
 717                                 dbesc($contact["url"]),
 718                                 dbesc(normalise_link($contact["url"])),
 719                                 dbesc($contact["photo"]),
 720                                 dbesc(DateTimeFormat::utcNow()),
 721                                 dbesc(DateTimeFormat::utcNow()),
 722                                 dbesc($contact["location"]),
 723                                 dbesc($contact["about"]),
 724                                 intval($contact["hide"]),
 725                                 intval($contact["generation"])
 726                         );
 727
 728                         $r = q(
 729                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 730                                 dbesc(normalise_link($contact["url"]))
 731                         );
 732
 733                         if (DBM::is_result($r)) {
 734                                 $gcontact_id = $r[0]["id"];
 735
 736                                 $doprobing = in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""]);
 737                         }
 738                 }
 739                 dba::unlock();
 740
 741                 if ($doprobing) {
 742                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 743                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 744                 }
 745
 746                 return $gcontact_id;
 747         }
 748
 749         /**
 750          * @brief Updates the gcontact table from a given array
 751          *
 752          * @param array $contact contact array
 753          *
 754          * @return bool|int Returns false if not found, integer if contact was found
 755          */
 756         public static function update($contact)
 757         {
 758                 // Check for invalid "contact-type" value
 759                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 760                         $contact['contact-type'] = 0;
 761                 }
 762
 763                 /// @todo update contact table as well
 764
 765                 $gcontact_id = self::getId($contact);
 766
 767                 if (!$gcontact_id) {
 768                         return false;
 769                 }
 770
 771                 $public_contact = q(
 772                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 773                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 774                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 775                         intval($gcontact_id)
 776                 );
 777
 778                 // Get all field names
 779                 $fields = [];
 780                 foreach ($public_contact[0] as $field => $data) {
 781                         $fields[$field] = $data;
 782                 }
 783
 784                 unset($fields["url"]);
 785                 unset($fields["updated"]);
 786                 unset($fields["hide"]);
 787
 788                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 789                 // This value is still transmitted via poco.
 790                 if ($contact["keywords"] == "0") {
 791                         unset($contact["keywords"]);
 792                 }
 793
 794                 if ($public_contact[0]["keywords"] == "0") {
 795                         $public_contact[0]["keywords"] = "";
 796                 }
 797
 798                 // assign all unassigned fields from the database entry
 799                 foreach ($fields as $field => $data) {
 800                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 801                                 $contact[$field] = $public_contact[0][$field];
 802                         }
 803                 }
 804
 805                 if (!isset($contact["hide"])) {
 806                         $contact["hide"] = $public_contact[0]["hide"];
 807                 }
 808
 809                 $fields["hide"] = $public_contact[0]["hide"];
 810
 811                 if ($contact["network"] == NETWORK_STATUSNET) {
 812                         $contact["network"] = NETWORK_OSTATUS;
 813                 }
 814
 815                 // Replace alternate OStatus user format with the primary one
 816                 self::fixAlternateContactAddress($contact);
 817
 818                 if (!isset($contact["updated"])) {
 819                         $contact["updated"] = DBM::date();
 820                 }
 821
 822                 if ($contact["network"] == NETWORK_TWITTER) {
 823                         $contact["server_url"] = 'http://twitter.com';
 824                 }
 825
 826                 if ($contact["server_url"] == "") {
 827                         $data = Probe::uri($contact["url"]);
 828                         if ($data["network"] != NETWORK_PHANTOM) {
 829                                 $contact["server_url"] = $data['baseurl'];
 830                         }
 831                 } else {
 832                         $contact["server_url"] = normalise_link($contact["server_url"]);
 833                 }
 834
 835                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 836                         $hostname = str_replace("http://", "", $contact["server_url"]);
 837                         $contact["addr"] = $contact["nick"]."@".$hostname;
 838                 }
 839
 840                 // Check if any field changed
 841                 $update = false;
 842                 unset($fields["generation"]);
 843
 844                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 845                         foreach ($fields as $field => $data) {
 846                                 if ($contact[$field] != $public_contact[0][$field]) {
 847                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 848                                         $update = true;
 849                                 }
 850                         }
 851
 852                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 853                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 854                                 $update = true;
 855                         }
 856                 }
 857
 858                 if ($update) {
 859                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 860                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 861                                         normalise_link($contact["url"]), $contact["generation"]];
 862                         $contact["updated"] = DBM::date($contact["updated"]);
 863
 864                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 865                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 866                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 867                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 868                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 869                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 870                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 871                                         'location' => $contact['location'], 'about' => $contact['about'],
 872                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 873                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 874
 875                         dba::update('gcontact', $updated, $condition, $fields);
 876
 877                         // Now update the contact entry with the user id "0" as well.
 878                         // This is used for the shadow copies of public items.
 879
 880                         $public_contact = dba::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 881                         if (DBM::is_result($public_contact)) {
 882                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 883
 884                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 885
 886                                 $fields = ['name', 'nick', 'addr',
 887                                                 'network', 'bd', 'gender',
 888                                                 'keywords', 'alias', 'contact-type',
 889                                                 'url', 'location', 'about'];
 890                                 $old_contact = dba::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 891
 892                                 // Update it with the current values
 893                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 894                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 895                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 896                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 897                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 898                                                 'location' => $contact['location'], 'about' => $contact['about']];
 899
 900                                 dba::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 901                         }
 902                 }
 903
 904                 return $gcontact_id;
 905         }
 906
 907         /**
 908          * @brief Updates the gcontact entry from probe
 909          *
 910          * @param string $url profile link
 911          * @return void
 912          */
 913         public static function updateFromProbe($url)
 914         {
 915                 $data = Probe::uri($url);
 916
 917                 if (in_array($data["network"], [NETWORK_PHANTOM])) {
 918                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 919                         return;
 920                 }
 921
 922                 $data["server_url"] = $data["baseurl"];
 923
 924                 self::update($data);
 925         }
 926
 927         /**
 928          * @brief Update the gcontact entry for a given user id
 929          *
 930          * @param int $uid User ID
 931          * @return void
 932          */
 933         public static function updateForUser($uid)
 934         {
 935                 $r = q(
 936                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 937                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 938                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 939                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 940                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 941                         FROM `profile`
 942                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 943                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 944                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 945                         intval($uid)
 946                 );
 947
 948                 $location = Profile::formatLocation(
 949                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 950                 );
 951
 952                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 953                 if ($r[0]["addr"] != "") {
 954                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 955                 } else {
 956                         $addr = $r[0]["addr"];
 957                 }
 958
 959                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 960                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 961                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 962                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 963                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 964                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 965                                 "connect" => $addr, "server_url" => System::baseUrl(),
 966                                 "generation" => 1, "network" => NETWORK_DFRN];
 967
 968                 self::update($gcontact);
 969         }
 970
 971         /**
 972          * @brief Fetches users of given GNU Social server
 973          *
 974          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 975          *
 976          * @param string $server Server address
 977          * @return void
 978          */
 979         public static function fetchGsUsers($server)
 980         {
 981                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 982
 983                 $url = $server."/main/statistics";
 984
 985                 $result = Network::curl($url);
 986                 if (!$result["success"]) {
 987                         return false;
 988                 }
 989
 990                 $statistics = json_decode($result["body"]);
 991
 992                 if (is_object($statistics->config)) {
 993                         if ($statistics->config->instance_with_ssl) {
 994                                 $server = "https://";
 995                         } else {
 996                                 $server = "http://";
 997                         }
 998
 999                         $server .= $statistics->config->instance_address;
1000
1001                         $hostname = $statistics->config->instance_address;
1002                 } else {
1003                         /// @TODO is_object() above means here no object, still $statistics is being used as object
1004                         if ($statistics->instance_with_ssl) {
1005                                 $server = "https://";
1006                         } else {
1007                                 $server = "http://";
1008                         }
1009
1010                         $server .= $statistics->instance_address;
1011
1012                         $hostname = $statistics->instance_address;
1013                 }
1014
1015                 if (is_object($statistics->users)) {
1016                         foreach ($statistics->users as $nick => $user) {
1017                                 $profile_url = $server."/".$user->nickname;
1018
1019                                 $contact = ["url" => $profile_url,
1020                                                 "name" => $user->fullname,
1021                                                 "addr" => $user->nickname."@".$hostname,
1022                                                 "nick" => $user->nickname,
1023                                                 "about" => $user->bio,
1024                                                 "network" => NETWORK_OSTATUS,
1025                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1026                                 self::getId($contact);
1027                         }
1028                 }
1029         }
1030
1031         /**
1032          * @brief Asking GNU Social server on a regular base for their user data
1033          * @return void
1034          */
1035         public static function discoverGsUsers()
1036         {
1037                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1038
1039                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1040
1041                 $r = q(
1042                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1043                         dbesc(NETWORK_OSTATUS),
1044                         dbesc($last_update)
1045                 );
1046
1047                 if (!DBM::is_result($r)) {
1048                         return;
1049                 }
1050
1051                 foreach ($r as $server) {
1052                         self::fetchGsUsers($server["url"]);
1053                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(DateTimeFormat::utcNow()), dbesc($server["nurl"]));
1054                 }
1055         }
1056
1057         /**
1058          * @return string
1059          */
1060         public static function getRandomUrl()
1061         {
1062                 $r = q(
1063                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1064                                         AND `last_contact` >= `last_failure`
1065                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1066                                 ORDER BY rand() LIMIT 1",
1067                         dbesc(NETWORK_DFRN)
1068                 );
1069
1070                 if (DBM::is_result($r)) {
1071                         return dirname($r[0]['url']);
1072                 }
1073
1074                 return '';
1075         }
1076 }