src/Model/GlobalContact.php

   1 <?php
   2 /**
   3  * @file src/Model/GlobalContact.php
   4  * @brief This file includes the GlobalContact class with directory related functions
   5  */
   6 namespace Friendica\Model;
   7
   8 use Friendica\Core\Config;
   9 use Friendica\Core\System;
  10 use Friendica\Core\Worker;
  11 use Friendica\Database\DBM;
  12 use Friendica\Network\Probe;
  13 use Friendica\Protocol\PortableContact;
  14 use dba;
  15 use Exception;
  16
  17 require_once 'include/datetime.php';
  18 require_once 'include/network.php';
  19 require_once 'include/html2bbcode.php';
  20 require_once 'include/Contact.php';
  21 require_once 'include/Photo.php';
  22
  23 /**
  24  * @brief This class handles GlobalContact related functions
  25  */
  26 class GlobalContact
  27 {
  28         /**
  29          * @brief Search global contact table by nick or name
  30          *
  31          * @param string $search Name or nick
  32          * @param string $mode   Search mode (e.g. "community")
  33          *
  34          * @return array with search results
  35          */
  36         public static function searchByName($search, $mode = '')
  37         {
  38                 if ($search) {
  39                         // check supported networks
  40                         if (Config::get('system', 'diaspora_enabled')) {
  41                                 $diaspora = NETWORK_DIASPORA;
  42                         } else {
  43                                 $diaspora = NETWORK_DFRN;
  44                         }
  45
  46                         if (!Config::get('system', 'ostatus_disabled')) {
  47                                 $ostatus = NETWORK_OSTATUS;
  48                         } else {
  49                                 $ostatus = NETWORK_DFRN;
  50                         }
  51
  52                         // check if we search only communities or every contact
  53                         if ($mode === "community") {
  54                                 $extra_sql = " AND `community`";
  55                         } else {
  56                                 $extra_sql = "";
  57                         }
  58
  59                         $search .= "%";
  60
  61                         $results = q(
  62                                 "SELECT `contact`.`id` AS `cid`, `gcontact`.`url`, `gcontact`.`name`, `gcontact`.`nick`, `gcontact`.`photo`,
  63                                                 `gcontact`.`network`, `gcontact`.`keywords`, `gcontact`.`addr`, `gcontact`.`community`
  64                                 FROM `gcontact`
  65                                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl`
  66                                         AND `contact`.`uid` = %d AND NOT `contact`.`blocked`
  67                                         AND NOT `contact`.`pending` AND `contact`.`rel` IN ('%s', '%s')
  68                                 WHERE (`contact`.`id` > 0 OR (NOT `gcontact`.`hide` AND `gcontact`.`network` IN ('%s', '%s', '%s') AND
  69                                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
  70                                 (`gcontact`.`updated` >= `gcontact`.`last_failure`)))) AND
  71                                 (`gcontact`.`addr` LIKE '%s' OR `gcontact`.`name` LIKE '%s' OR `gcontact`.`nick` LIKE '%s') $extra_sql
  72                                         GROUP BY `gcontact`.`nurl`
  73                                         ORDER BY `gcontact`.`nurl` DESC
  74                                         LIMIT 1000",
  75                                 intval(local_user()),
  76                                 dbesc(CONTACT_IS_SHARING),
  77                                 dbesc(CONTACT_IS_FRIEND),
  78                                 dbesc(NETWORK_DFRN),
  79                                 dbesc($ostatus),
  80                                 dbesc($diaspora),
  81                                 dbesc(escape_tags($search)),
  82                                 dbesc(escape_tags($search)),
  83                                 dbesc(escape_tags($search))
  84                         );
  85
  86                         return $results;
  87                 }
  88         }
  89
  90         /**
  91          * @brief Link the gcontact entry with user, contact and global contact
  92          *
  93          * @param integer $gcid Global contact ID
  94          * @param integer $uid  User ID
  95          * @param integer $cid  Contact ID
  96          * @param integer $zcid Global Contact ID
  97          */
  98         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  99         {
 100                 if ($gcid <= 0) {
 101                         return;
 102                 }
 103
 104                 $r = q(
 105                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 106                         intval($cid),
 107                         intval($uid),
 108                         intval($gcid),
 109                         intval($zcid)
 110                 );
 111
 112                 if (!DBM::is_result($r)) {
 113                         q(
 114                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 115                                 intval($cid),
 116                                 intval($uid),
 117                                 intval($gcid),
 118                                 intval($zcid),
 119                                 dbesc(datetime_convert())
 120                         );
 121                 } else {
 122                         q(
 123                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 124                                 dbesc(datetime_convert()),
 125                                 intval($cid),
 126                                 intval($uid),
 127                                 intval($gcid),
 128                                 intval($zcid)
 129                         );
 130                 }
 131         }
 132
 133         /**
 134          * @brief Sanitize the given gcontact data
 135          *
 136          * @param array $gcontact array with gcontact data
 137          * @throw Exception
 138          *
 139          * Generation:
 140          *  0: No definition
 141          *  1: Profiles on this server
 142          *  2: Contacts of profiles on this server
 143          *  3: Contacts of contacts of profiles on this server
 144          *  4: ...
 145          */
 146         public static function sanitize($gcontact)
 147         {
 148                 if ($gcontact['url'] == "") {
 149                         throw new Exception('URL is empty');
 150                 }
 151
 152                 $urlparts = parse_url($gcontact['url']);
 153                 if (!isset($urlparts["scheme"])) {
 154                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 155                 }
 156
 157                 if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com", "identi.ca", "alpha.app.net"))) {
 158                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 159                 }
 160
 161                 // Don't store the statusnet connector as network
 162                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 163                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 164                         $gcontact['network'] = "";
 165                 }
 166
 167                 // Assure that there are no parameter fragments in the profile url
 168                 if (in_array($gcontact['network'], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
 169                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 170                 }
 171
 172                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 173
 174                 // The global contacts should contain the original picture, not the cached one
 175                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 176                         $gcontact['photo'] = "";
 177                 }
 178
 179                 if (!isset($gcontact['network'])) {
 180                         $r = q(
 181                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 182                                 dbesc(normalise_link($gcontact['url'])),
 183                                 dbesc(NETWORK_STATUSNET)
 184                         );
 185                         if (DBM::is_result($r)) {
 186                                 $gcontact['network'] = $r[0]["network"];
 187                         }
 188
 189                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 190                                 $r = q(
 191                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 192                                         dbesc($gcontact['url']),
 193                                         dbesc(normalise_link($gcontact['url'])),
 194                                         dbesc(NETWORK_STATUSNET)
 195                                 );
 196                                 if (DBM::is_result($r)) {
 197                                         $gcontact['network'] = $r[0]["network"];
 198                                 }
 199                         }
 200                 }
 201
 202                 $gcontact['server_url'] = '';
 203                 $gcontact['network'] = '';
 204
 205                 $x = q(
 206                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 207                         dbesc(normalise_link($gcontact['url']))
 208                 );
 209
 210                 if (DBM::is_result($x)) {
 211                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 212                                 $gcontact['network'] = $x[0]["network"];
 213                         }
 214                         if ($gcontact['updated'] <= NULL_DATE) {
 215                                 $gcontact['updated'] = $x[0]["updated"];
 216                         }
 217                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 218                                 $gcontact['server_url'] = $x[0]["server_url"];
 219                         }
 220                         if (!isset($gcontact['addr'])) {
 221                                 $gcontact['addr'] = $x[0]["addr"];
 222                         }
 223                 }
 224
 225                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 226                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 227                 ) {
 228                         $data = Probe::uri($gcontact['url']);
 229
 230                         if ($data["network"] == NETWORK_PHANTOM) {
 231                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 232                         }
 233
 234                         $orig_profile = $gcontact['url'];
 235
 236                         $gcontact["server_url"] = $data["baseurl"];
 237
 238                         $gcontact = array_merge($gcontact, $data);
 239
 240                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 241                                 // Delete the old entry - if it exists
 242                                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 243                                 if (DBM::is_result($r)) {
 244                                         q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 245                                         q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 246                                 }
 247                         }
 248                 }
 249
 250                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 251                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 252                 }
 253
 254                 if (!in_array($gcontact['network'], array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA))) {
 255                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 256                 }
 257
 258                 if (!isset($gcontact['server_url'])) {
 259                         // We check the server url to be sure that it is a real one
 260                         $server_url = PortableContact::detectServer($gcontact['url']);
 261
 262                         // We are now sure that it is a correct URL. So we use it in the future
 263                         if ($server_url != "") {
 264                                 $gcontact['server_url'] = $server_url;
 265                         }
 266                 }
 267
 268                 // The server URL doesn't seem to be valid, so we don't store it.
 269                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 270                         $gcontact['server_url'] = "";
 271                 }
 272
 273                 return $gcontact;
 274         }
 275
 276         public static function countCommonFriends($uid, $cid)
 277         {
 278                 $r = q(
 279                         "SELECT count(*) as `total`
 280                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 281                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 282                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 283                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 284                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 285                         intval($cid),
 286                         intval($uid),
 287                         intval($uid),
 288                         intval($cid)
 289                 );
 290
 291                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 292                 if (DBM::is_result($r)) {
 293                         return $r[0]['total'];
 294                 }
 295                 return 0;
 296         }
 297
 298         public static function countCommonFriendsZcid($uid, $zcid)
 299         {
 300                 $r = q(
 301                         "SELECT count(*) as `total`
 302                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 303                         where `glink`.`zcid` = %d
 304                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 305                         intval($zcid),
 306                         intval($uid)
 307                 );
 308
 309                 if (DBM::is_result($r)) {
 310                         return $r[0]['total'];
 311                 }
 312
 313                 return 0;
 314         }
 315
 316         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 317         {
 318                 if ($shuffle) {
 319                         $sql_extra = " order by rand() ";
 320                 } else {
 321                         $sql_extra = " order by `gcontact`.`name` asc ";
 322                 }
 323
 324                 $r = q(
 325                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 326                         FROM `glink`
 327                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 328                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 329                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 330                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 331                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 332                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 333                                 $sql_extra LIMIT %d, %d",
 334                         intval($cid),
 335                         intval($uid),
 336                         intval($uid),
 337                         intval($cid),
 338                         intval($start),
 339                         intval($limit)
 340                 );
 341
 342                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 343                 return $r;
 344         }
 345
 346         function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 347         {
 348                 if ($shuffle) {
 349                         $sql_extra = " order by rand() ";
 350                 } else {
 351                         $sql_extra = " order by `gcontact`.`name` asc ";
 352                 }
 353
 354                 $r = q(
 355                         "SELECT `gcontact`.*
 356                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 357                         where `glink`.`zcid` = %d
 358                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 359                         $sql_extra limit %d, %d",
 360                         intval($zcid),
 361                         intval($uid),
 362                         intval($start),
 363                         intval($limit)
 364                 );
 365
 366                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 367                 return $r;
 368         }
 369
 370         public static function countAllFriends($uid, $cid)
 371         {
 372                 $r = q(
 373                         "SELECT count(*) as `total`
 374                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 375                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 376                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 377                         intval($cid),
 378                         intval($uid)
 379                 );
 380
 381                 if (DBM::is_result($r)) {
 382                         return $r[0]['total'];
 383                 }
 384
 385                 return 0;
 386         }
 387
 388
 389         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 390         {
 391                 $r = q(
 392                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 393                         FROM `glink`
 394                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 395                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 396                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 397                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 398                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 399                         intval($uid),
 400                         intval($cid),
 401                         intval($uid),
 402                         intval($start),
 403                         intval($limit)
 404                 );
 405
 406                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 407                 return $r;
 408         }
 409
 410         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 411         {
 412                 if (!$uid) {
 413                         return array();
 414                 }
 415
 416                 /*
 417                 * Uncommented because the result of the queries are to big to store it in the cache.
 418                 * We need to decide if we want to change the db column type or if we want to delete it.
 419                 */
 420                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 421                 //if (!is_null($list)) {
 422                 //      return $list;
 423                 //}
 424
 425                 $network = array(NETWORK_DFRN);
 426
 427                 if (Config::get('system', 'diaspora_enabled')) {
 428                         $network[] = NETWORK_DIASPORA;
 429                 }
 430
 431                 if (!Config::get('system', 'ostatus_disabled')) {
 432                         $network[] = NETWORK_OSTATUS;
 433                 }
 434
 435                 $sql_network = implode("', '", $network);
 436                 $sql_network = "'".$sql_network."'";
 437
 438                 /// @todo This query is really slow
 439                 // By now we cache the data for five minutes
 440                 $r = q(
 441                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 442                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 443                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 444                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 445                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 446                         AND `gcontact`.`updated` >= '%s'
 447                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 448                         AND `gcontact`.`network` IN (%s)
 449                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 450                         intval($uid),
 451                         intval($uid),
 452                         intval($uid),
 453                         intval($uid),
 454                         dbesc(NULL_DATE),
 455                         $sql_network,
 456                         intval($start),
 457                         intval($limit)
 458                 );
 459
 460                 if (DBM::is_result($r) && count($r) >= ($limit -1)) {
 461                         /*
 462                         * Uncommented because the result of the queries are to big to store it in the cache.
 463                         * We need to decide if we want to change the db column type or if we want to delete it.
 464                         */
 465                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 466
 467                         return $r;
 468                 }
 469
 470                 $r2 = q(
 471                         "SELECT gcontact.* FROM gcontact
 472                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 473                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 474                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 475                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 476                         AND `gcontact`.`updated` >= '%s'
 477                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 478                         AND `gcontact`.`network` IN (%s)
 479                         ORDER BY rand() LIMIT %d, %d",
 480                         intval($uid),
 481                         intval($uid),
 482                         intval($uid),
 483                         dbesc(NULL_DATE),
 484                         $sql_network,
 485                         intval($start),
 486                         intval($limit)
 487                 );
 488
 489                 $list = array();
 490                 foreach ($r2 as $suggestion) {
 491                         $list[$suggestion["nurl"]] = $suggestion;
 492                 }
 493
 494                 foreach ($r as $suggestion) {
 495                         $list[$suggestion["nurl"]] = $suggestion;
 496                 }
 497
 498                 while (sizeof($list) > ($limit)) {
 499                         array_pop($list);
 500                 }
 501
 502                 /*
 503                 * Uncommented because the result of the queries are to big to store it in the cache.
 504                 * We need to decide if we want to change the db column type or if we want to delete it.
 505                 */
 506                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 507                 return $list;
 508         }
 509
 510         public static function updateSuggestions()
 511         {
 512                 $a = get_app();
 513
 514                 $done = array();
 515
 516                 /// @TODO Check if it is really neccessary to poll the own server
 517                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 518
 519                 $done[] = System::baseUrl() . '/poco';
 520
 521                 if (strlen(Config::get('system', 'directory'))) {
 522                         $x = fetch_url(get_server()."/pubsites");
 523                         if ($x) {
 524                                 $j = json_decode($x);
 525                                 if ($j->entries) {
 526                                         foreach ($j->entries as $entry) {
 527                                                 PortableContact::checkServer($entry->url);
 528
 529                                                 $url = $entry->url . '/poco';
 530                                                 if (! in_array($url, $done)) {
 531                                                         PortableContact::loadWorker(0, 0, 0, $entry->url . '/poco');
 532                                                 }
 533                                         }
 534                                 }
 535                         }
 536                 }
 537
 538                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 539                 $r = q(
 540                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 541                         dbesc(NETWORK_DFRN),
 542                         dbesc(NETWORK_DIASPORA)
 543                 );
 544
 545                 if (DBM::is_result($r)) {
 546                         foreach ($r as $rr) {
 547                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 548                                 if (! in_array($base, $done)) {
 549                                         PortableContact::loadWorker(0, 0, 0, $base);
 550                                 }
 551                         }
 552                 }
 553         }
 554
 555         /**
 556          * @brief Removes unwanted parts from a contact url
 557          *
 558          * @param string $url Contact url
 559          *
 560          * @return string Contact url with the wanted parts
 561          */
 562         public static function cleanContactUrl($url)
 563         {
 564                 $parts = parse_url($url);
 565
 566                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 567                         return $url;
 568                 }
 569
 570                 $new_url = $parts["scheme"]."://".$parts["host"];
 571
 572                 if (isset($parts["port"])) {
 573                         $new_url .= ":".$parts["port"];
 574                 }
 575
 576                 if (isset($parts["path"])) {
 577                         $new_url .= $parts["path"];
 578                 }
 579
 580                 if ($new_url != $url) {
 581                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 582                 }
 583
 584                 return $new_url;
 585         }
 586
 587         /**
 588          * @brief Replace alternate OStatus user format with the primary one
 589          *
 590          * @param arr $contact contact array (called by reference)
 591          */
 592         public static function fixAlternateContactAddress(&$contact)
 593         {
 594                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 595                         $data = Probe::uri($contact["url"]);
 596                         if ($contact["network"] == NETWORK_OSTATUS) {
 597                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 598                                 $contact["url"] = $data["url"];
 599                                 $contact["addr"] = $data["addr"];
 600                                 $contact["alias"] = $data["alias"];
 601                                 $contact["server_url"] = $data["baseurl"];
 602                         }
 603                 }
 604         }
 605
 606         /**
 607          * @brief Fetch the gcontact id, add an entry if not existed
 608          *
 609          * @param arr $contact contact array
 610          *
 611          * @return bool|int Returns false if not found, integer if contact was found
 612          */
 613         public static function getId($contact)
 614         {
 615                 $gcontact_id = 0;
 616                 $doprobing = false;
 617
 618                 if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
 619                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 620                         return false;
 621                 }
 622
 623                 if ($contact["network"] == NETWORK_STATUSNET) {
 624                         $contact["network"] = NETWORK_OSTATUS;
 625                 }
 626
 627                 // All new contacts are hidden by default
 628                 if (!isset($contact["hide"])) {
 629                         $contact["hide"] = true;
 630                 }
 631
 632                 // Replace alternate OStatus user format with the primary one
 633                 self::fixAlternateContactAddress($contact);
 634
 635                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 636                 if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
 637                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 638                 }
 639
 640                 dba::lock('gcontact');
 641                 $r = q(
 642                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 643                         dbesc(normalise_link($contact["url"]))
 644                 );
 645
 646                 if (DBM::is_result($r)) {
 647                         $gcontact_id = $r[0]["id"];
 648
 649                         // Update every 90 days
 650                         if (in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
 651                                 $last_failure_str = $r[0]["last_failure"];
 652                                 $last_failure = strtotime($r[0]["last_failure"]);
 653                                 $last_contact_str = $r[0]["last_contact"];
 654                                 $last_contact = strtotime($r[0]["last_contact"]);
 655                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 656                         }
 657                 } else {
 658                         q(
 659                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 660                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 661                                 dbesc($contact["name"]),
 662                                 dbesc($contact["nick"]),
 663                                 dbesc($contact["addr"]),
 664                                 dbesc($contact["network"]),
 665                                 dbesc($contact["url"]),
 666                                 dbesc(normalise_link($contact["url"])),
 667                                 dbesc($contact["photo"]),
 668                                 dbesc(datetime_convert()),
 669                                 dbesc(datetime_convert()),
 670                                 dbesc($contact["location"]),
 671                                 dbesc($contact["about"]),
 672                                 intval($contact["hide"]),
 673                                 intval($contact["generation"])
 674                         );
 675
 676                         $r = q(
 677                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 678                                 dbesc(normalise_link($contact["url"]))
 679                         );
 680
 681                         if (DBM::is_result($r)) {
 682                                 $gcontact_id = $r[0]["id"];
 683
 684                                 $doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
 685                         }
 686                 }
 687                 dba::unlock();
 688
 689                 if ($doprobing) {
 690                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 691                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 692                 }
 693
 694                 return $gcontact_id;
 695         }
 696
 697         /**
 698          * @brief Updates the gcontact table from a given array
 699          *
 700          * @param arr $contact contact array
 701          *
 702          * @return bool|int Returns false if not found, integer if contact was found
 703          */
 704         public static function update($contact)
 705         {
 706                 // Check for invalid "contact-type" value
 707                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 708                         $contact['contact-type'] = 0;
 709                 }
 710
 711                 /// @todo update contact table as well
 712
 713                 $gcontact_id = self::getId($contact);
 714
 715                 if (!$gcontact_id) {
 716                         return false;
 717                 }
 718
 719                 $r = q(
 720                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 721                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 722                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 723                         intval($gcontact_id)
 724                 );
 725
 726                 // Get all field names
 727                 $fields = array();
 728                 foreach ($r[0] as $field => $data) {
 729                         $fields[$field] = $data;
 730                 }
 731
 732                 unset($fields["url"]);
 733                 unset($fields["updated"]);
 734                 unset($fields["hide"]);
 735
 736                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 737                 // This value is still transmitted via poco.
 738                 if ($contact["keywords"] == "0") {
 739                         unset($contact["keywords"]);
 740                 }
 741
 742                 if ($r[0]["keywords"] == "0") {
 743                         $r[0]["keywords"] = "";
 744                 }
 745
 746                 // assign all unassigned fields from the database entry
 747                 foreach ($fields as $field => $data) {
 748                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 749                                 $contact[$field] = $r[0][$field];
 750                         }
 751                 }
 752
 753                 if (!isset($contact["hide"])) {
 754                         $contact["hide"] = $r[0]["hide"];
 755                 }
 756
 757                 $fields["hide"] = $r[0]["hide"];
 758
 759                 if ($contact["network"] == NETWORK_STATUSNET) {
 760                         $contact["network"] = NETWORK_OSTATUS;
 761                 }
 762
 763                 // Replace alternate OStatus user format with the primary one
 764                 self::fixAlternateContactAddress($contact);
 765
 766                 if (!isset($contact["updated"])) {
 767                         $contact["updated"] = DBM::date();
 768                 }
 769
 770                 if ($contact["network"] == NETWORK_TWITTER) {
 771                         $contact["server_url"] = 'http://twitter.com';
 772                 }
 773
 774                 if ($contact["server_url"] == "") {
 775                         $data = Probe::uri($contact["url"]);
 776                         if ($data["network"] != NETWORK_PHANTOM) {
 777                                 $contact["server_url"] = $data['baseurl'];
 778                         }
 779                 } else {
 780                         $contact["server_url"] = normalise_link($contact["server_url"]);
 781                 }
 782
 783                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 784                         $hostname = str_replace("http://", "", $contact["server_url"]);
 785                         $contact["addr"] = $contact["nick"]."@".$hostname;
 786                 }
 787
 788                 // Check if any field changed
 789                 $update = false;
 790                 unset($fields["generation"]);
 791
 792                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $r[0]["generation"])) || ($r[0]["generation"] == 0)) {
 793                         foreach ($fields as $field => $data) {
 794                                 if ($contact[$field] != $r[0][$field]) {
 795                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
 796                                         $update = true;
 797                                 }
 798                         }
 799
 800                         if ($contact["generation"] < $r[0]["generation"]) {
 801                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
 802                                 $update = true;
 803                         }
 804                 }
 805
 806                 if ($update) {
 807                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 808                         $condition = array('`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 809                                         normalise_link($contact["url"]), $contact["generation"]);
 810                         $contact["updated"] = DBM::date($contact["updated"]);
 811
 812                         $updated = array('photo' => $contact['photo'], 'name' => $contact['name'],
 813                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 814                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 815                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 816                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 817                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 818                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 819                                         'location' => $contact['location'], 'about' => $contact['about'],
 820                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 821                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']);
 822
 823                         dba::update('gcontact', $updated, $condition, $fields);
 824
 825                         // Now update the contact entry with the user id "0" as well.
 826                         // This is used for the shadow copies of public items.
 827                         $r = q(
 828                                 "SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
 829                                 dbesc(normalise_link($contact["url"]))
 830                         );
 831
 832                         if (DBM::is_result($r)) {
 833                                 logger("Update public contact ".$r[0]["id"], LOGGER_DEBUG);
 834
 835                                 update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
 836
 837                                 $fields = array('name', 'nick', 'addr',
 838                                                 'network', 'bd', 'gender',
 839                                                 'keywords', 'alias', 'contact-type',
 840                                                 'url', 'location', 'about');
 841                                 $old_contact = dba::select('contact', $fields, array('id' => $r[0]["id"]), array('limit' => 1));
 842
 843                                 // Update it with the current values
 844                                 $fields = array('name' => $contact['name'], 'nick' => $contact['nick'],
 845                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 846                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 847                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 848                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 849                                                 'location' => $contact['location'], 'about' => $contact['about']);
 850
 851                                 dba::update('contact', $fields, array('id' => $r[0]["id"]), $old_contact);
 852                         }
 853                 }
 854
 855                 return $gcontact_id;
 856         }
 857
 858         /**
 859          * @brief Updates the gcontact entry from probe
 860          *
 861          * @param str $url profile link
 862          */
 863         public static function updateFromProbe($url)
 864         {
 865                 $data = Probe::uri($url);
 866
 867                 if (in_array($data["network"], array(NETWORK_PHANTOM))) {
 868                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 869                         return;
 870                 }
 871
 872                 $data["server_url"] = $data["baseurl"];
 873
 874                 self::update($data);
 875         }
 876
 877         /**
 878          * @brief Update the gcontact entry for a given user id
 879          *
 880          * @param int $uid User ID
 881          */
 882         public static function updateForUser($uid)
 883         {
 884                 $r = q(
 885                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 886                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 887                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 888                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 889                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 890                         FROM `profile`
 891                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 892                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 893                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 894                         intval($uid)
 895                 );
 896
 897                 $location = formatted_location(
 898                         array("locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"])
 899                 );
 900
 901                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 902                 if ($r[0]["addr"] != "") {
 903                         $addr = $r[0]["nickname"].'@'.str_replace(array("http://", "https://"), "", System::baseUrl());
 904                 } else {
 905                         $addr = $r[0]["addr"];
 906                 }
 907
 908                 $gcontact = array("name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 909                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 910                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 911                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 912                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 913                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 914                                 "connect" => $addr, "server_url" => System::baseUrl(),
 915                                 "generation" => 1, "network" => NETWORK_DFRN);
 916
 917                 self::update($gcontact);
 918         }
 919
 920         /**
 921          * @brief Fetches users of given GNU Social server
 922          *
 923          * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
 924          *
 925          * @param str $server Server address
 926          */
 927         public static function fetchGsUsers($server)
 928         {
 929                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 930
 931                 $url = $server."/main/statistics";
 932
 933                 $result = z_fetch_url($url);
 934                 if (!$result["success"]) {
 935                         return false;
 936                 }
 937
 938                 $statistics = json_decode($result["body"]);
 939
 940                 if (is_object($statistics->config)) {
 941                         if ($statistics->config->instance_with_ssl) {
 942                                 $server = "https://";
 943                         } else {
 944                                 $server = "http://";
 945                         }
 946
 947                         $server .= $statistics->config->instance_address;
 948
 949                         $hostname = $statistics->config->instance_address;
 950                 } else {
 951                         /// @TODO is_object() above means here no object, still $statistics is being used as object
 952                         if ($statistics->instance_with_ssl) {
 953                                 $server = "https://";
 954                         } else {
 955                                 $server = "http://";
 956                         }
 957
 958                         $server .= $statistics->instance_address;
 959
 960                         $hostname = $statistics->instance_address;
 961                 }
 962
 963                 if (is_object($statistics->users)) {
 964                         foreach ($statistics->users as $nick => $user) {
 965                                 $profile_url = $server."/".$user->nickname;
 966
 967                                 $contact = array("url" => $profile_url,
 968                                                 "name" => $user->fullname,
 969                                                 "addr" => $user->nickname."@".$hostname,
 970                                                 "nick" => $user->nickname,
 971                                                 "about" => $user->bio,
 972                                                 "network" => NETWORK_OSTATUS,
 973                                                 "photo" => System::baseUrl()."/images/person-175.jpg");
 974                                 self::getId($contact);
 975                         }
 976                 }
 977         }
 978
 979         /**
 980          * @brief Asking GNU Social server on a regular base for their user data
 981          *
 982          */
 983         public static function discoverGsUsers()
 984         {
 985                 $requery_days = intval(Config::get("system", "poco_requery_days"));
 986
 987                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
 988
 989                 $r = q(
 990                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
 991                         dbesc(NETWORK_OSTATUS),
 992                         dbesc($last_update)
 993                 );
 994
 995                 if (!DBM::is_result($r)) {
 996                         return;
 997                 }
 998
 999                 foreach ($r as $server) {
1000                         self::fetchGsUsers($server["url"]);
1001                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1002                 }
1003         }
1004 }