src/Model/GContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/GlobalContact.php
   5  * @brief This file includes the GlobalContact class with directory related functions
   6  */
   7 namespace Friendica\Model;
   8
   9 use Exception;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\Logger;
  12 use Friendica\Core\Protocol;
  13 use Friendica\Core\System;
  14 use Friendica\Core\Worker;
  15 use Friendica\Database\DBA;
  16 use Friendica\Network\Probe;
  17 use Friendica\Protocol\PortableContact;
  18 use Friendica\Util\DateTimeFormat;
  19 use Friendica\Util\Network;
  20 use Friendica\Util\Strings;
  21
  22 require_once 'include/dba.php';
  23
  24 /**
  25  * @brief This class handles GlobalContact related functions
  26  */
  27 class GContact
  28 {
  29         /**
  30          * @brief Search global contact table by nick or name
  31          *
  32          * @param string $search Name or nick
  33          * @param string $mode   Search mode (e.g. "community")
  34          *
  35          * @return array with search results
  36          */
  37         public static function searchByName($search, $mode = '')
  38         {
  39                 if (empty($search)) {
  40                         return [];
  41                 }
  42
  43                 // check supported networks
  44                 if (Config::get('system', 'diaspora_enabled')) {
  45                         $diaspora = Protocol::DIASPORA;
  46                 } else {
  47                         $diaspora = Protocol::DFRN;
  48                 }
  49
  50                 if (!Config::get('system', 'ostatus_disabled')) {
  51                         $ostatus = Protocol::OSTATUS;
  52                 } else {
  53                         $ostatus = Protocol::DFRN;
  54                 }
  55
  56                 // check if we search only communities or every contact
  57                 if ($mode === "community") {
  58                         $extra_sql = " AND `community`";
  59                 } else {
  60                         $extra_sql = "";
  61                 }
  62
  63                 $search .= "%";
  64
  65                 $results = DBA::p("SELECT `nurl` FROM `gcontact`
  66                         WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
  67                                 ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
  68                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
  69                                 GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
  70                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
  71                 );
  72
  73                 $gcontacts = [];
  74                 while ($result = DBA::fetch($results)) {
  75                         $urlparts = parse_url($result["nurl"]);
  76
  77                         // Ignore results that look strange.
  78                         // For historic reasons the gcontact table does contain some garbage.
  79                         if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
  80                                 continue;
  81                         }
  82
  83                         $gcontacts[] = Contact::getDetailsByURL($result["nurl"], local_user());
  84                 }
  85                 return $gcontacts;
  86         }
  87
  88         /**
  89          * @brief Link the gcontact entry with user, contact and global contact
  90          *
  91          * @param integer $gcid Global contact ID
  92          * @param integer $uid  User ID
  93          * @param integer $cid  Contact ID
  94          * @param integer $zcid Global Contact ID
  95          * @return void
  96          */
  97         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
  98         {
  99                 if ($gcid <= 0) {
 100                         return;
 101                 }
 102
 103                 $condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
 104                 DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
 105         }
 106
 107         /**
 108          * @brief Sanitize the given gcontact data
 109          *
 110          * @param array $gcontact array with gcontact data
 111          * @throw Exception
 112          *
 113          * Generation:
 114          *  0: No definition
 115          *  1: Profiles on this server
 116          *  2: Contacts of profiles on this server
 117          *  3: Contacts of contacts of profiles on this server
 118          *  4: ...
 119          * @return array $gcontact
 120          */
 121         public static function sanitize($gcontact)
 122         {
 123                 if ($gcontact['url'] == "") {
 124                         throw new Exception('URL is empty');
 125                 }
 126
 127                 $urlparts = parse_url($gcontact['url']);
 128                 if (!isset($urlparts["scheme"])) {
 129                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 130                 }
 131
 132                 if (in_array($urlparts["host"], ["twitter.com", "identi.ca"])) {
 133                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 134                 }
 135
 136                 // Don't store the statusnet connector as network
 137                 // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
 138                 if ($gcontact['network'] == Protocol::STATUSNET) {
 139                         $gcontact['network'] = "";
 140                 }
 141
 142                 // Assure that there are no parameter fragments in the profile url
 143                 if (in_array($gcontact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 144                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 145                 }
 146
 147                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 148
 149                 // The global contacts should contain the original picture, not the cached one
 150                 if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(System::baseUrl()."/photo/"))) {
 151                         $gcontact['photo'] = "";
 152                 }
 153
 154                 if (!isset($gcontact['network'])) {
 155                         $condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
 156                                 Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 157                         $contact = DBA::selectFirst('contact', ['network'], $condition);
 158                         if (DBA::isResult($contact)) {
 159                                 $gcontact['network'] = $contact["network"];
 160                         }
 161
 162                         if (($gcontact['network'] == "") || ($gcontact['network'] == Protocol::OSTATUS)) {
 163                                 $condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
 164                                         $gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
 165                                 $contact = DBA::selectFirst('contact', ['network'], $condition);
 166                                 if (DBA::isResult($contact)) {
 167                                         $gcontact['network'] = $contact["network"];
 168                                 }
 169                         }
 170                 }
 171
 172                 $gcontact['server_url'] = '';
 173                 $gcontact['network'] = '';
 174
 175                 $fields = ['network', 'updated', 'server_url', 'url', 'addr'];
 176                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
 177                 if (DBA::isResult($gcnt)) {
 178                         if (!isset($gcontact['network']) && ($gcnt["network"] != Protocol::STATUSNET)) {
 179                                 $gcontact['network'] = $gcnt["network"];
 180                         }
 181                         if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
 182                                 $gcontact['updated'] = $gcnt["updated"];
 183                         }
 184                         if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt["server_url"]) != Strings::normaliseLink($gcnt["url"]))) {
 185                                 $gcontact['server_url'] = $gcnt["server_url"];
 186                         }
 187                         if (!isset($gcontact['addr'])) {
 188                                 $gcontact['addr'] = $gcnt["addr"];
 189                         }
 190                 }
 191
 192                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 193                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 194                 ) {
 195                         $data = Probe::uri($gcontact['url']);
 196
 197                         if ($data["network"] == Protocol::PHANTOM) {
 198                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 199                         }
 200
 201                         $orig_profile = $gcontact['url'];
 202
 203                         $gcontact["server_url"] = $data["baseurl"];
 204
 205                         $gcontact = array_merge($gcontact, $data);
 206
 207                         if ($alternate && ($gcontact['network'] == Protocol::OSTATUS)) {
 208                                 // Delete the old entry - if it exists
 209                                 if (DBA::exists('gcontact', ['nurl' => Strings::normaliseLink($orig_profile)])) {
 210                                         DBA::delete('gcontact', ['nurl' => Strings::normaliseLink($orig_profile)]);
 211                                 }
 212                         }
 213                 }
 214
 215                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 216                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 217                 }
 218
 219                 if (!in_array($gcontact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA])) {
 220                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 221                 }
 222
 223                 if (!isset($gcontact['server_url'])) {
 224                         // We check the server url to be sure that it is a real one
 225                         $server_url = PortableContact::detectServer($gcontact['url']);
 226
 227                         // We are now sure that it is a correct URL. So we use it in the future
 228                         if ($server_url != "") {
 229                                 $gcontact['server_url'] = $server_url;
 230                         }
 231                 }
 232
 233                 // The server URL doesn't seem to be valid, so we don't store it.
 234                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 235                         $gcontact['server_url'] = "";
 236                 }
 237
 238                 return $gcontact;
 239         }
 240
 241         /**
 242          * @param integer $uid id
 243          * @param integer $cid id
 244          * @return integer
 245          */
 246         public static function countCommonFriends($uid, $cid)
 247         {
 248                 $r = q(
 249                         "SELECT count(*) as `total`
 250                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 251                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 252                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 253                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 254                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 255                         intval($cid),
 256                         intval($uid),
 257                         intval($uid),
 258                         intval($cid)
 259                 );
 260
 261                 // Logger::log("countCommonFriends: $uid $cid {$r[0]['total']}");
 262                 if (DBA::isResult($r)) {
 263                         return $r[0]['total'];
 264                 }
 265                 return 0;
 266         }
 267
 268         /**
 269          * @param integer $uid  id
 270          * @param integer $zcid zcid
 271          * @return integer
 272          */
 273         public static function countCommonFriendsZcid($uid, $zcid)
 274         {
 275                 $r = q(
 276                         "SELECT count(*) as `total`
 277                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 278                         where `glink`.`zcid` = %d
 279                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 280                         intval($zcid),
 281                         intval($uid)
 282                 );
 283
 284                 if (DBA::isResult($r)) {
 285                         return $r[0]['total'];
 286                 }
 287
 288                 return 0;
 289         }
 290
 291         /**
 292          * @param integer $uid     user
 293          * @param integer $cid     cid
 294          * @param integer $start   optional, default 0
 295          * @param integer $limit   optional, default 9999
 296          * @param boolean $shuffle optional, default false
 297          * @return object
 298          */
 299         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 300         {
 301                 if ($shuffle) {
 302                         $sql_extra = " order by rand() ";
 303                 } else {
 304                         $sql_extra = " order by `gcontact`.`name` asc ";
 305                 }
 306
 307                 $r = q(
 308                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 309                         FROM `glink`
 310                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 311                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 312                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 313                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 314                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 315                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 316                                 $sql_extra LIMIT %d, %d",
 317                         intval($cid),
 318                         intval($uid),
 319                         intval($uid),
 320                         intval($cid),
 321                         intval($start),
 322                         intval($limit)
 323                 );
 324
 325                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 326                 return $r;
 327         }
 328
 329         /**
 330          * @param integer $uid     user
 331          * @param integer $zcid    zcid
 332          * @param integer $start   optional, default 0
 333          * @param integer $limit   optional, default 9999
 334          * @param boolean $shuffle optional, default false
 335          * @return object
 336          */
 337         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 338         {
 339                 if ($shuffle) {
 340                         $sql_extra = " order by rand() ";
 341                 } else {
 342                         $sql_extra = " order by `gcontact`.`name` asc ";
 343                 }
 344
 345                 $r = q(
 346                         "SELECT `gcontact`.*
 347                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 348                         where `glink`.`zcid` = %d
 349                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 350                         $sql_extra limit %d, %d",
 351                         intval($zcid),
 352                         intval($uid),
 353                         intval($start),
 354                         intval($limit)
 355                 );
 356
 357                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 358                 return $r;
 359         }
 360
 361         /**
 362          * @param integer $uid user
 363          * @param integer $cid cid
 364          * @return integer
 365          */
 366         public static function countAllFriends($uid, $cid)
 367         {
 368                 $r = q(
 369                         "SELECT count(*) as `total`
 370                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 371                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 372                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 373                         intval($cid),
 374                         intval($uid)
 375                 );
 376
 377                 if (DBA::isResult($r)) {
 378                         return $r[0]['total'];
 379                 }
 380
 381                 return 0;
 382         }
 383
 384         /**
 385          * @param integer $uid   user
 386          * @param integer $cid   cid
 387          * @param integer $start optional, default 0
 388          * @param integer $limit optional, default 80
 389          * @return array
 390          */
 391         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 392         {
 393                 $r = q(
 394                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 395                         FROM `glink`
 396                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 397                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 398                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 399                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 400                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 401                         intval($uid),
 402                         intval($cid),
 403                         intval($uid),
 404                         intval($start),
 405                         intval($limit)
 406                 );
 407
 408                 /// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
 409                 return $r;
 410         }
 411
 412         /**
 413          * @param object  $uid   user
 414          * @param integer $start optional, default 0
 415          * @param integer $limit optional, default 80
 416          * @return array
 417          */
 418         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 419         {
 420                 if (!$uid) {
 421                         return [];
 422                 }
 423
 424                 /*
 425                 * Uncommented because the result of the queries are to big to store it in the cache.
 426                 * We need to decide if we want to change the db column type or if we want to delete it.
 427                 */
 428                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 429                 //if (!is_null($list)) {
 430                 //      return $list;
 431                 //}
 432
 433                 $network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
 434
 435                 if (Config::get('system', 'diaspora_enabled')) {
 436                         $network[] = Protocol::DIASPORA;
 437                 }
 438
 439                 if (!Config::get('system', 'ostatus_disabled')) {
 440                         $network[] = Protocol::OSTATUS;
 441                 }
 442
 443                 $sql_network = implode("', '", $network);
 444                 $sql_network = "'".$sql_network."'";
 445
 446                 /// @todo This query is really slow
 447                 // By now we cache the data for five minutes
 448                 $r = q(
 449                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 450                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 451                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 452                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 453                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 454                         AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
 455                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 456                         AND `gcontact`.`network` IN (%s)
 457                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 458                         intval($uid),
 459                         intval($uid),
 460                         intval($uid),
 461                         intval($uid),
 462                         DBA::NULL_DATETIME,
 463                         $sql_network,
 464                         intval($start),
 465                         intval($limit)
 466                 );
 467
 468                 if (DBA::isResult($r) && count($r) >= ($limit -1)) {
 469                         /*
 470                         * Uncommented because the result of the queries are to big to store it in the cache.
 471                         * We need to decide if we want to change the db column type or if we want to delete it.
 472                         */
 473                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, Cache::FIVE_MINUTES);
 474
 475                         return $r;
 476                 }
 477
 478                 $r2 = q(
 479                         "SELECT gcontact.* FROM gcontact
 480                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 481                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 482                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 483                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 484                         AND `gcontact`.`updated` >= '%s'
 485                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 486                         AND `gcontact`.`network` IN (%s)
 487                         ORDER BY rand() LIMIT %d, %d",
 488                         intval($uid),
 489                         intval($uid),
 490                         intval($uid),
 491                         DBA::NULL_DATETIME,
 492                         $sql_network,
 493                         intval($start),
 494                         intval($limit)
 495                 );
 496
 497                 $list = [];
 498                 foreach ($r2 as $suggestion) {
 499                         $list[$suggestion["nurl"]] = $suggestion;
 500                 }
 501
 502                 foreach ($r as $suggestion) {
 503                         $list[$suggestion["nurl"]] = $suggestion;
 504                 }
 505
 506                 while (sizeof($list) > ($limit)) {
 507                         array_pop($list);
 508                 }
 509
 510                 /*
 511                 * Uncommented because the result of the queries are to big to store it in the cache.
 512                 * We need to decide if we want to change the db column type or if we want to delete it.
 513                 */
 514                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, Cache::FIVE_MINUTES);
 515                 return $list;
 516         }
 517
 518         /**
 519          * @return void
 520          */
 521         public static function updateSuggestions()
 522         {
 523                 $a = get_app();
 524
 525                 $done = [];
 526
 527                 /// @TODO Check if it is really neccessary to poll the own server
 528                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 529
 530                 $done[] = System::baseUrl() . '/poco';
 531
 532                 if (strlen(Config::get('system', 'directory'))) {
 533                         $x = Network::fetchUrl(get_server()."/pubsites");
 534                         if (!empty($x)) {
 535                                 $j = json_decode($x);
 536                                 if (!empty($j->entries)) {
 537                                         foreach ($j->entries as $entry) {
 538                                                 PortableContact::checkServer($entry->url);
 539
 540                                                 $url = $entry->url . '/poco';
 541                                                 if (!in_array($url, $done)) {
 542                                                         PortableContact::loadWorker(0, 0, 0, $url);
 543                                                         $done[] = $url;
 544                                                 }
 545                                         }
 546                                 }
 547                         }
 548                 }
 549
 550                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 551                 $r = q(
 552                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 553                         DBA::escape(Protocol::DFRN),
 554                         DBA::escape(Protocol::DIASPORA)
 555                 );
 556
 557                 if (DBA::isResult($r)) {
 558                         foreach ($r as $rr) {
 559                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 560                                 if (! in_array($base, $done)) {
 561                                         PortableContact::loadWorker(0, 0, 0, $base);
 562                                 }
 563                         }
 564                 }
 565         }
 566
 567         /**
 568          * @brief Removes unwanted parts from a contact url
 569          *
 570          * @param string $url Contact url
 571          *
 572          * @return string Contact url with the wanted parts
 573          */
 574         public static function cleanContactUrl($url)
 575         {
 576                 $parts = parse_url($url);
 577
 578                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 579                         return $url;
 580                 }
 581
 582                 $new_url = $parts["scheme"]."://".$parts["host"];
 583
 584                 if (isset($parts["port"])) {
 585                         $new_url .= ":".$parts["port"];
 586                 }
 587
 588                 if (isset($parts["path"])) {
 589                         $new_url .= $parts["path"];
 590                 }
 591
 592                 if ($new_url != $url) {
 593                         Logger::log("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), Logger::DEBUG);
 594                 }
 595
 596                 return $new_url;
 597         }
 598
 599         /**
 600          * @brief Replace alternate OStatus user format with the primary one
 601          *
 602          * @param array $contact contact array (called by reference)
 603          * @return void
 604          */
 605         public static function fixAlternateContactAddress(&$contact)
 606         {
 607                 if (($contact["network"] == Protocol::OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 608                         $data = Probe::uri($contact["url"]);
 609                         if ($contact["network"] == Protocol::OSTATUS) {
 610                                 Logger::log("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 611                                 $contact["url"] = $data["url"];
 612                                 $contact["addr"] = $data["addr"];
 613                                 $contact["alias"] = $data["alias"];
 614                                 $contact["server_url"] = $data["baseurl"];
 615                         }
 616                 }
 617         }
 618
 619         /**
 620          * @brief Fetch the gcontact id, add an entry if not existed
 621          *
 622          * @param array $contact contact array
 623          *
 624          * @return bool|int Returns false if not found, integer if contact was found
 625          */
 626         public static function getId($contact)
 627         {
 628                 $gcontact_id = 0;
 629                 $doprobing = false;
 630                 $last_failure_str = '';
 631                 $last_contact_str = '';
 632
 633                 if (empty($contact["network"])) {
 634                         Logger::log("Empty network for contact url ".$contact["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 635                         return false;
 636                 }
 637
 638                 if (in_array($contact["network"], [Protocol::PHANTOM])) {
 639                         Logger::log("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 640                         return false;
 641                 }
 642
 643                 if ($contact["network"] == Protocol::STATUSNET) {
 644                         $contact["network"] = Protocol::OSTATUS;
 645                 }
 646
 647                 // All new contacts are hidden by default
 648                 if (!isset($contact["hide"])) {
 649                         $contact["hide"] = true;
 650                 }
 651
 652                 // Replace alternate OStatus user format with the primary one
 653                 self::fixAlternateContactAddress($contact);
 654
 655                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 656                 if (in_array($contact["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
 657                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 658                 }
 659
 660                 DBA::lock('gcontact');
 661                 $fields = ['id', 'last_contact', 'last_failure', 'network'];
 662                 $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($contact["url"])]);
 663                 if (DBA::isResult($gcnt)) {
 664                         $gcontact_id = $gcnt["id"];
 665
 666                         // Update every 90 days
 667                         if (in_array($gcnt["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
 668                                 $last_failure_str = $gcnt["last_failure"];
 669                                 $last_failure = strtotime($gcnt["last_failure"]);
 670                                 $last_contact_str = $gcnt["last_contact"];
 671                                 $last_contact = strtotime($gcnt["last_contact"]);
 672                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 673                         }
 674                 } else {
 675                         $contact['location'] = defaults($contact, 'location', '');
 676                         $contact['about'] = defaults($contact, 'about', '');
 677                         $contact['generation'] = defaults($contact, 'generation', 0);
 678
 679                         q(
 680                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 681                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 682                                 DBA::escape($contact["name"]),
 683                                 DBA::escape($contact["nick"]),
 684                                 DBA::escape($contact["addr"]),
 685                                 DBA::escape($contact["network"]),
 686                                 DBA::escape($contact["url"]),
 687                                 DBA::escape(Strings::normaliseLink($contact["url"])),
 688                                 DBA::escape($contact["photo"]),
 689                                 DBA::escape(DateTimeFormat::utcNow()),
 690                                 DBA::escape(DateTimeFormat::utcNow()),
 691                                 DBA::escape($contact["location"]),
 692                                 DBA::escape($contact["about"]),
 693                                 intval($contact["hide"]),
 694                                 intval($contact["generation"])
 695                         );
 696
 697                         $condition = ['nurl' => Strings::normaliseLink($contact["url"])];
 698                         $cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
 699                         if (DBA::isResult($cnt)) {
 700                                 $gcontact_id = $cnt["id"];
 701                                 $doprobing = in_array($cnt["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""]);
 702                         }
 703                 }
 704                 DBA::unlock();
 705
 706                 if ($doprobing) {
 707                         Logger::log("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], Logger::DEBUG);
 708                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 709                 }
 710
 711                 return $gcontact_id;
 712         }
 713
 714         /**
 715          * @brief Updates the gcontact table from a given array
 716          *
 717          * @param array $contact contact array
 718          *
 719          * @return bool|int Returns false if not found, integer if contact was found
 720          */
 721         public static function update($contact)
 722         {
 723                 // Check for invalid "contact-type" value
 724                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 725                         $contact['contact-type'] = 0;
 726                 }
 727
 728                 /// @todo update contact table as well
 729
 730                 $gcontact_id = self::getId($contact);
 731
 732                 if (!$gcontact_id) {
 733                         return false;
 734                 }
 735
 736                 $public_contact = q(
 737                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 738                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 739                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 740                         intval($gcontact_id)
 741                 );
 742
 743                 // Get all field names
 744                 $fields = [];
 745                 foreach ($public_contact[0] as $field => $data) {
 746                         $fields[$field] = $data;
 747                 }
 748
 749                 unset($fields["url"]);
 750                 unset($fields["updated"]);
 751                 unset($fields["hide"]);
 752
 753                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 754                 // This value is still transmitted via poco.
 755                 if (!empty($contact["keywords"]) && ($contact["keywords"] == "0")) {
 756                         unset($contact["keywords"]);
 757                 }
 758
 759                 if (!empty($public_contact[0]["keywords"]) && ($public_contact[0]["keywords"] == "0")) {
 760                         $public_contact[0]["keywords"] = "";
 761                 }
 762
 763                 // assign all unassigned fields from the database entry
 764                 foreach ($fields as $field => $data) {
 765                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 766                                 $contact[$field] = $public_contact[0][$field];
 767                         }
 768                 }
 769
 770                 if (!isset($contact["hide"])) {
 771                         $contact["hide"] = $public_contact[0]["hide"];
 772                 }
 773
 774                 $fields["hide"] = $public_contact[0]["hide"];
 775
 776                 if ($contact["network"] == Protocol::STATUSNET) {
 777                         $contact["network"] = Protocol::OSTATUS;
 778                 }
 779
 780                 // Replace alternate OStatus user format with the primary one
 781                 self::fixAlternateContactAddress($contact);
 782
 783                 if (!isset($contact["updated"])) {
 784                         $contact["updated"] = DateTimeFormat::utcNow();
 785                 }
 786
 787                 if ($contact["network"] == Protocol::TWITTER) {
 788                         $contact["server_url"] = 'http://twitter.com';
 789                 }
 790
 791                 if ($contact["server_url"] == "") {
 792                         $data = Probe::uri($contact["url"]);
 793                         if ($data["network"] != Protocol::PHANTOM) {
 794                                 $contact["server_url"] = $data['baseurl'];
 795                         }
 796                 } else {
 797                         $contact["server_url"] = Strings::normaliseLink($contact["server_url"]);
 798                 }
 799
 800                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 801                         $hostname = str_replace("http://", "", $contact["server_url"]);
 802                         $contact["addr"] = $contact["nick"]."@".$hostname;
 803                 }
 804
 805                 // Check if any field changed
 806                 $update = false;
 807                 unset($fields["generation"]);
 808
 809                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 810                         foreach ($fields as $field => $data) {
 811                                 if ($contact[$field] != $public_contact[0][$field]) {
 812                                         Logger::log("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", Logger::DEBUG);
 813                                         $update = true;
 814                                 }
 815                         }
 816
 817                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 818                                 Logger::log("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", Logger::DEBUG);
 819                                 $update = true;
 820                         }
 821                 }
 822
 823                 if ($update) {
 824                         Logger::log("Update gcontact for ".$contact["url"], Logger::DEBUG);
 825                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 826                                         Strings::normaliseLink($contact["url"]), $contact["generation"]];
 827                         $contact["updated"] = DateTimeFormat::utc($contact["updated"]);
 828
 829                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 830                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 831                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 832                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 833                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 834                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 835                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 836                                         'location' => $contact['location'], 'about' => $contact['about'],
 837                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 838                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 839
 840                         DBA::update('gcontact', $updated, $condition, $fields);
 841
 842                         // Now update the contact entry with the user id "0" as well.
 843                         // This is used for the shadow copies of public items.
 844                         /// @todo Check if we really should do this.
 845                         // The quality of the gcontact table is mostly lower than the public contact
 846                         $public_contact = DBA::selectFirst('contact', ['id'], ['nurl' => Strings::normaliseLink($contact["url"]), 'uid' => 0]);
 847                         if (DBA::isResult($public_contact)) {
 848                                 Logger::log("Update public contact ".$public_contact["id"], Logger::DEBUG);
 849
 850                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 851
 852                                 $fields = ['name', 'nick', 'addr',
 853                                                 'network', 'bd', 'gender',
 854                                                 'keywords', 'alias', 'contact-type',
 855                                                 'url', 'location', 'about'];
 856                                 $old_contact = DBA::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 857
 858                                 // Update it with the current values
 859                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 860                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 861                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 862                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 863                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 864                                                 'location' => $contact['location'], 'about' => $contact['about']];
 865
 866                                 // Don't update the birthday field if not set or invalid
 867                                 if (empty($contact['birthday']) || ($contact['birthday'] < '0001-01-01')) {
 868                                         unset($fields['bd']);
 869                                 }
 870
 871
 872                                 DBA::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 873                         }
 874                 }
 875
 876                 return $gcontact_id;
 877         }
 878
 879         /**
 880          * @brief Updates the gcontact entry from probe
 881          *
 882          * @param string $url profile link
 883          * @return void
 884          */
 885         public static function updateFromProbe($url)
 886         {
 887                 $data = Probe::uri($url);
 888
 889                 if (in_array($data["network"], [Protocol::PHANTOM])) {
 890                         Logger::log("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), Logger::DEBUG);
 891                         return;
 892                 }
 893
 894                 $data["server_url"] = $data["baseurl"];
 895
 896                 self::update($data);
 897         }
 898
 899         /**
 900          * @brief Update the gcontact entry for a given user id
 901          *
 902          * @param int $uid User ID
 903          * @return void
 904          */
 905         public static function updateForUser($uid)
 906         {
 907                 $r = q(
 908                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 909                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 910                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 911                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 912                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 913                         FROM `profile`
 914                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 915                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 916                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 917                         intval($uid)
 918                 );
 919
 920                 if (!DBA::isResult($r)) {
 921                         Logger::log('Cannot find user with uid=' . $uid, Logger::INFO);
 922                         return false;
 923                 }
 924
 925                 $location = Profile::formatLocation(
 926                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 927                 );
 928
 929                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 930                 if ($r[0]["addr"] != "") {
 931                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 932                 } else {
 933                         $addr = $r[0]["addr"];
 934                 }
 935
 936                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 937                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 938                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 939                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 940                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 941                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 942                                 "connect" => $addr, "server_url" => System::baseUrl(),
 943                                 "generation" => 1, "network" => Protocol::DFRN];
 944
 945                 self::update($gcontact);
 946         }
 947
 948         /**
 949          * @brief Fetches users of given GNU Social server
 950          *
 951          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 952          *
 953          * @param string $server Server address
 954          * @return void
 955          */
 956         public static function fetchGsUsers($server)
 957         {
 958                 Logger::log("Fetching users from GNU Social server ".$server, Logger::DEBUG);
 959
 960                 $url = $server."/main/statistics";
 961
 962                 $curlResult = Network::curl($url);
 963                 if (!$curlResult->isSuccess()) {
 964                         return false;
 965                 }
 966
 967                 $statistics = json_decode($curlResult->getBody());
 968
 969                 if (!empty($statistics->config)) {
 970                         if ($statistics->config->instance_with_ssl) {
 971                                 $server = "https://";
 972                         } else {
 973                                 $server = "http://";
 974                         }
 975
 976                         $server .= $statistics->config->instance_address;
 977
 978                         $hostname = $statistics->config->instance_address;
 979                 } elseif (!empty($statistics)) {
 980                         if ($statistics->instance_with_ssl) {
 981                                 $server = "https://";
 982                         } else {
 983                                 $server = "http://";
 984                         }
 985
 986                         $server .= $statistics->instance_address;
 987
 988                         $hostname = $statistics->instance_address;
 989                 }
 990
 991                 if (!empty($statistics->users)) {
 992                         foreach ($statistics->users as $nick => $user) {
 993                                 $profile_url = $server."/".$user->nickname;
 994
 995                                 $contact = ["url" => $profile_url,
 996                                                 "name" => $user->fullname,
 997                                                 "addr" => $user->nickname."@".$hostname,
 998                                                 "nick" => $user->nickname,
 999                                                 "network" => Protocol::OSTATUS,
1000                                                 "photo" => System::baseUrl()."/images/person-300.jpg"];
1001
1002                                 if (isset($user->bio)) {
1003                                         $contact["about"] = $user->bio;
1004                                 }
1005
1006                                 self::getId($contact);
1007                         }
1008                 }
1009         }
1010
1011         /**
1012          * @brief Asking GNU Social server on a regular base for their user data
1013          * @return void
1014          */
1015         public static function discoverGsUsers()
1016         {
1017                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1018
1019                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1020
1021                 $r = q(
1022                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1023                         DBA::escape(Protocol::OSTATUS),
1024                         DBA::escape($last_update)
1025                 );
1026
1027                 if (!DBA::isResult($r)) {
1028                         return;
1029                 }
1030
1031                 foreach ($r as $server) {
1032                         self::fetchGsUsers($server["url"]);
1033                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", DBA::escape(DateTimeFormat::utcNow()), DBA::escape($server["nurl"]));
1034                 }
1035         }
1036
1037         /**
1038          * @return string
1039          */
1040         public static function getRandomUrl()
1041         {
1042                 $r = q(
1043                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1044                                         AND `last_contact` >= `last_failure`
1045                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1046                                 ORDER BY rand() LIMIT 1",
1047                         DBA::escape(Protocol::DFRN)
1048                 );
1049
1050                 if (DBA::isResult($r)) {
1051                         return dirname($r[0]['url']);
1052                 }
1053
1054                 return '';
1055         }
1056 }