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