src/Model/GContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/GlobalContact.php
   5  * @brief This file includes the GlobalContact class with directory related functions
   6  */
   7 namespace Friendica\Model;
   8
   9 use Friendica\Core\Config;
  10 use Friendica\Core\System;
  11 use Friendica\Core\Worker;
  12 use Friendica\Database\DBM;
  13 use Friendica\Model\Contact;
  14 use Friendica\Model\Profile;
  15 use Friendica\Network\Probe;
  16 use Friendica\Protocol\PortableContact;
  17 use Friendica\Util\Network;
  18 use Friendica\Util\Temporal;
  19 use dba;
  20 use Exception;
  21
  22 require_once 'include/datetime.php';
  23 require_once 'include/dba.php';
  24 require_once 'include/html2bbcode.php';
  25
  26 /**
  27  * @brief This class handles GlobalContact related functions
  28  */
  29 class GContact
  30 {
  31         /**
  32          * @brief Search global contact table by nick or name
  33          *
  34          * @param string $search Name or nick
  35          * @param string $mode   Search mode (e.g. "community")
  36          *
  37          * @return array with search results
  38          */
  39         public static function searchByName($search, $mode = '')
  40         {
  41                 if ($search) {
  42                         // check supported networks
  43                         if (Config::get('system', 'diaspora_enabled')) {
  44                                 $diaspora = NETWORK_DIASPORA;
  45                         } else {
  46                                 $diaspora = NETWORK_DFRN;
  47                         }
  48
  49                         if (!Config::get('system', 'ostatus_disabled')) {
  50                                 $ostatus = NETWORK_OSTATUS;
  51                         } else {
  52                                 $ostatus = NETWORK_DFRN;
  53                         }
  54
  55                         // check if we search only communities or every contact
  56                         if ($mode === "community") {
  57                                 $extra_sql = " AND `community`";
  58                         } else {
  59                                 $extra_sql = "";
  60                         }
  61
  62                         $search .= "%";
  63
  64                         $results = q(
  65                                 "SELECT `contact`.`id` AS `cid`, `gcontact`.`url`, `gcontact`.`name`, `gcontact`.`nick`, `gcontact`.`photo`,
  66                                                 `gcontact`.`network`, `gcontact`.`keywords`, `gcontact`.`addr`, `gcontact`.`community`
  67                                 FROM `gcontact`
  68                                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl`
  69                                         AND `contact`.`uid` = %d AND NOT `contact`.`blocked`
  70                                         AND NOT `contact`.`pending` AND `contact`.`rel` IN ('%s', '%s')
  71                                 WHERE (`contact`.`id` > 0 OR (NOT `gcontact`.`hide` AND `gcontact`.`network` IN ('%s', '%s', '%s') AND
  72                                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
  73                                 (`gcontact`.`updated` >= `gcontact`.`last_failure`)))) AND
  74                                 (`gcontact`.`addr` LIKE '%s' OR `gcontact`.`name` LIKE '%s' OR `gcontact`.`nick` LIKE '%s') $extra_sql
  75                                         GROUP BY `gcontact`.`nurl`
  76                                         ORDER BY `gcontact`.`nurl` DESC
  77                                         LIMIT 1000",
  78                                 intval(local_user()),
  79                                 dbesc(CONTACT_IS_SHARING),
  80                                 dbesc(CONTACT_IS_FRIEND),
  81                                 dbesc(NETWORK_DFRN),
  82                                 dbesc($ostatus),
  83                                 dbesc($diaspora),
  84                                 dbesc(escape_tags($search)),
  85                                 dbesc(escape_tags($search)),
  86                                 dbesc(escape_tags($search))
  87                         );
  88
  89                         return $results;
  90                 }
  91         }
  92
  93         /**
  94          * @brief Link the gcontact entry with user, contact and global contact
  95          *
  96          * @param integer $gcid Global contact ID
  97          * @param integer $uid  User ID
  98          * @param integer $cid  Contact ID
  99          * @param integer $zcid Global Contact ID
 100          * @return void
 101          */
 102         public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
 103         {
 104                 if ($gcid <= 0) {
 105                         return;
 106                 }
 107
 108                 $r = q(
 109                         "SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 110                         intval($cid),
 111                         intval($uid),
 112                         intval($gcid),
 113                         intval($zcid)
 114                 );
 115
 116                 if (!DBM::is_result($r)) {
 117                         q(
 118                                 "INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
 119                                 intval($cid),
 120                                 intval($uid),
 121                                 intval($gcid),
 122                                 intval($zcid),
 123                                 dbesc(Temporal::utcNow())
 124                         );
 125                 } else {
 126                         q(
 127                                 "UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 128                                 dbesc(Temporal::utcNow()),
 129                                 intval($cid),
 130                                 intval($uid),
 131                                 intval($gcid),
 132                                 intval($zcid)
 133                         );
 134                 }
 135         }
 136
 137         /**
 138          * @brief Sanitize the given gcontact data
 139          *
 140          * @param array $gcontact array with gcontact data
 141          * @throw Exception
 142          *
 143          * Generation:
 144          *  0: No definition
 145          *  1: Profiles on this server
 146          *  2: Contacts of profiles on this server
 147          *  3: Contacts of contacts of profiles on this server
 148          *  4: ...
 149          * @return array $gcontact
 150          */
 151         public static function sanitize($gcontact)
 152         {
 153                 if ($gcontact['url'] == "") {
 154                         throw new Exception('URL is empty');
 155                 }
 156
 157                 $urlparts = parse_url($gcontact['url']);
 158                 if (!isset($urlparts["scheme"])) {
 159                         throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
 160                 }
 161
 162                 if (in_array($urlparts["host"], ["www.facebook.com", "facebook.com", "twitter.com", "identi.ca", "alpha.app.net"])) {
 163                         throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
 164                 }
 165
 166                 // Don't store the statusnet connector as network
 167                 // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 168                 if ($gcontact['network'] == NETWORK_STATUSNET) {
 169                         $gcontact['network'] = "";
 170                 }
 171
 172                 // Assure that there are no parameter fragments in the profile url
 173                 if (in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 174                         $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
 175                 }
 176
 177                 $alternate = PortableContact::alternateOStatusUrl($gcontact['url']);
 178
 179                 // The global contacts should contain the original picture, not the cached one
 180                 if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
 181                         $gcontact['photo'] = "";
 182                 }
 183
 184                 if (!isset($gcontact['network'])) {
 185                         $r = q(
 186                                 "SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 187                                 dbesc(normalise_link($gcontact['url'])),
 188                                 dbesc(NETWORK_STATUSNET)
 189                         );
 190                         if (DBM::is_result($r)) {
 191                                 $gcontact['network'] = $r[0]["network"];
 192                         }
 193
 194                         if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
 195                                 $r = q(
 196                                         "SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 197                                         dbesc($gcontact['url']),
 198                                         dbesc(normalise_link($gcontact['url'])),
 199                                         dbesc(NETWORK_STATUSNET)
 200                                 );
 201                                 if (DBM::is_result($r)) {
 202                                         $gcontact['network'] = $r[0]["network"];
 203                                 }
 204                         }
 205                 }
 206
 207                 $gcontact['server_url'] = '';
 208                 $gcontact['network'] = '';
 209
 210                 $x = q(
 211                         "SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 212                         dbesc(normalise_link($gcontact['url']))
 213                 );
 214
 215                 if (DBM::is_result($x)) {
 216                         if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
 217                                 $gcontact['network'] = $x[0]["network"];
 218                         }
 219                         if ($gcontact['updated'] <= NULL_DATE) {
 220                                 $gcontact['updated'] = $x[0]["updated"];
 221                         }
 222                         if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
 223                                 $gcontact['server_url'] = $x[0]["server_url"];
 224                         }
 225                         if (!isset($gcontact['addr'])) {
 226                                 $gcontact['addr'] = $x[0]["addr"];
 227                         }
 228                 }
 229
 230                 if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
 231                         && PortableContact::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
 232                 ) {
 233                         $data = Probe::uri($gcontact['url']);
 234
 235                         if ($data["network"] == NETWORK_PHANTOM) {
 236                                 throw new Exception('Probing for URL '.$gcontact['url'].' failed');
 237                         }
 238
 239                         $orig_profile = $gcontact['url'];
 240
 241                         $gcontact["server_url"] = $data["baseurl"];
 242
 243                         $gcontact = array_merge($gcontact, $data);
 244
 245                         if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
 246                                 // Delete the old entry - if it exists
 247                                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 248                                 if (DBM::is_result($r)) {
 249                                         q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 250                                         q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 251                                 }
 252                         }
 253                 }
 254
 255                 if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
 256                         throw new Exception('No name and photo for URL '.$gcontact['url']);
 257                 }
 258
 259                 if (!in_array($gcontact['network'], [NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA])) {
 260                         throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
 261                 }
 262
 263                 if (!isset($gcontact['server_url'])) {
 264                         // We check the server url to be sure that it is a real one
 265                         $server_url = PortableContact::detectServer($gcontact['url']);
 266
 267                         // We are now sure that it is a correct URL. So we use it in the future
 268                         if ($server_url != "") {
 269                                 $gcontact['server_url'] = $server_url;
 270                         }
 271                 }
 272
 273                 // The server URL doesn't seem to be valid, so we don't store it.
 274                 if (!PortableContact::checkServer($gcontact['server_url'], $gcontact['network'])) {
 275                         $gcontact['server_url'] = "";
 276                 }
 277
 278                 return $gcontact;
 279         }
 280
 281         /**
 282          * @param integer $uid id
 283          * @param integer $cid id
 284          * @return integer
 285          */
 286         public static function countCommonFriends($uid, $cid)
 287         {
 288                 $r = q(
 289                         "SELECT count(*) as `total`
 290                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 291                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 292                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
 293                         (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 294                         AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 295                         intval($cid),
 296                         intval($uid),
 297                         intval($uid),
 298                         intval($cid)
 299                 );
 300
 301                 // logger("countCommonFriends: $uid $cid {$r[0]['total']}");
 302                 if (DBM::is_result($r)) {
 303                         return $r[0]['total'];
 304                 }
 305                 return 0;
 306         }
 307
 308         /**
 309          * @param integer $uid  id
 310          * @param integer $zcid zcid
 311          * @return integer
 312          */
 313         public static function countCommonFriendsZcid($uid, $zcid)
 314         {
 315                 $r = q(
 316                         "SELECT count(*) as `total`
 317                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 318                         where `glink`.`zcid` = %d
 319                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 320                         intval($zcid),
 321                         intval($uid)
 322                 );
 323
 324                 if (DBM::is_result($r)) {
 325                         return $r[0]['total'];
 326                 }
 327
 328                 return 0;
 329         }
 330
 331         /**
 332          * @param integer $uid     user
 333          * @param integer $cid     cid
 334          * @param integer $start   optional, default 0
 335          * @param integer $limit   optional, default 9999
 336          * @param boolean $shuffle optional, default false
 337          * @return object
 338          */
 339         public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
 340         {
 341                 if ($shuffle) {
 342                         $sql_extra = " order by rand() ";
 343                 } else {
 344                         $sql_extra = " order by `gcontact`.`name` asc ";
 345                 }
 346
 347                 $r = q(
 348                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 349                         FROM `glink`
 350                         INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 351                         INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 352                         WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 353                                 AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 354                                 AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 355                                 AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 356                                 $sql_extra LIMIT %d, %d",
 357                         intval($cid),
 358                         intval($uid),
 359                         intval($uid),
 360                         intval($cid),
 361                         intval($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         /**
 370          * @param integer $uid     user
 371          * @param integer $zcid    zcid
 372          * @param integer $start   optional, default 0
 373          * @param integer $limit   optional, default 9999
 374          * @param boolean $shuffle optional, default false
 375          * @return object
 376          */
 377         public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
 378         {
 379                 if ($shuffle) {
 380                         $sql_extra = " order by rand() ";
 381                 } else {
 382                         $sql_extra = " order by `gcontact`.`name` asc ";
 383                 }
 384
 385                 $r = q(
 386                         "SELECT `gcontact`.*
 387                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 388                         where `glink`.`zcid` = %d
 389                         and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 390                         $sql_extra limit %d, %d",
 391                         intval($zcid),
 392                         intval($uid),
 393                         intval($start),
 394                         intval($limit)
 395                 );
 396
 397                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 398                 return $r;
 399         }
 400
 401         /**
 402          * @param integer $uid user
 403          * @param integer $cid cid
 404          * @return integer
 405          */
 406         public static function countAllFriends($uid, $cid)
 407         {
 408                 $r = q(
 409                         "SELECT count(*) as `total`
 410                         FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 411                         where `glink`.`cid` = %d and `glink`.`uid` = %d AND
 412                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
 413                         intval($cid),
 414                         intval($uid)
 415                 );
 416
 417                 if (DBM::is_result($r)) {
 418                         return $r[0]['total'];
 419                 }
 420
 421                 return 0;
 422         }
 423
 424         /**
 425          * @param integer $uid   user
 426          * @param integer $cid   cid
 427          * @param integer $start optional, default 0
 428          * @param integer $limit optional, default 80
 429          * @return array
 430          */
 431         public static function allFriends($uid, $cid, $start = 0, $limit = 80)
 432         {
 433                 $r = q(
 434                         "SELECT `gcontact`.*, `contact`.`id` AS `cid`
 435                         FROM `glink`
 436                         INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 437                         LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
 438                         WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 439                         ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 440                         ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
 441                         intval($uid),
 442                         intval($cid),
 443                         intval($uid),
 444                         intval($start),
 445                         intval($limit)
 446                 );
 447
 448                 /// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
 449                 return $r;
 450         }
 451
 452         /**
 453          * @param object  $uid   user
 454          * @param integer $start optional, default 0
 455          * @param integer $limit optional, default 80
 456          * @return array
 457          */
 458         public static function suggestionQuery($uid, $start = 0, $limit = 80)
 459         {
 460                 if (!$uid) {
 461                         return [];
 462                 }
 463
 464                 /*
 465                 * Uncommented because the result of the queries are to big to store it in the cache.
 466                 * We need to decide if we want to change the db column type or if we want to delete it.
 467                 */
 468                 //$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
 469                 //if (!is_null($list)) {
 470                 //      return $list;
 471                 //}
 472
 473                 $network = [NETWORK_DFRN];
 474
 475                 if (Config::get('system', 'diaspora_enabled')) {
 476                         $network[] = NETWORK_DIASPORA;
 477                 }
 478
 479                 if (!Config::get('system', 'ostatus_disabled')) {
 480                         $network[] = NETWORK_OSTATUS;
 481                 }
 482
 483                 $sql_network = implode("', '", $network);
 484                 $sql_network = "'".$sql_network."'";
 485
 486                 /// @todo This query is really slow
 487                 // By now we cache the data for five minutes
 488                 $r = q(
 489                         "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
 490                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 491                         where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
 492                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 493                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 494                         AND `gcontact`.`updated` >= '%s'
 495                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 496                         AND `gcontact`.`network` IN (%s)
 497                         GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
 498                         intval($uid),
 499                         intval($uid),
 500                         intval($uid),
 501                         intval($uid),
 502                         dbesc(NULL_DATE),
 503                         $sql_network,
 504                         intval($start),
 505                         intval($limit)
 506                 );
 507
 508                 if (DBM::is_result($r) && count($r) >= ($limit -1)) {
 509                         /*
 510                         * Uncommented because the result of the queries are to big to store it in the cache.
 511                         * We need to decide if we want to change the db column type or if we want to delete it.
 512                         */
 513                         //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
 514
 515                         return $r;
 516                 }
 517
 518                 $r2 = q(
 519                         "SELECT gcontact.* FROM gcontact
 520                         INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
 521                         WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
 522                         AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
 523                         AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
 524                         AND `gcontact`.`updated` >= '%s'
 525                         AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
 526                         AND `gcontact`.`network` IN (%s)
 527                         ORDER BY rand() LIMIT %d, %d",
 528                         intval($uid),
 529                         intval($uid),
 530                         intval($uid),
 531                         dbesc(NULL_DATE),
 532                         $sql_network,
 533                         intval($start),
 534                         intval($limit)
 535                 );
 536
 537                 $list = [];
 538                 foreach ($r2 as $suggestion) {
 539                         $list[$suggestion["nurl"]] = $suggestion;
 540                 }
 541
 542                 foreach ($r as $suggestion) {
 543                         $list[$suggestion["nurl"]] = $suggestion;
 544                 }
 545
 546                 while (sizeof($list) > ($limit)) {
 547                         array_pop($list);
 548                 }
 549
 550                 /*
 551                 * Uncommented because the result of the queries are to big to store it in the cache.
 552                 * We need to decide if we want to change the db column type or if we want to delete it.
 553                 */
 554                 //Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
 555                 return $list;
 556         }
 557
 558         /**
 559          * @return void
 560          */
 561         public static function updateSuggestions()
 562         {
 563                 $a = get_app();
 564
 565                 $done = [];
 566
 567                 /// @TODO Check if it is really neccessary to poll the own server
 568                 PortableContact::loadWorker(0, 0, 0, System::baseUrl() . '/poco');
 569
 570                 $done[] = System::baseUrl() . '/poco';
 571
 572                 if (strlen(Config::get('system', 'directory'))) {
 573                         $x = Network::fetchUrl(get_server()."/pubsites");
 574                         if ($x) {
 575                                 $j = json_decode($x);
 576                                 if ($j->entries) {
 577                                         foreach ($j->entries as $entry) {
 578                                                 PortableContact::checkServer($entry->url);
 579
 580                                                 $url = $entry->url . '/poco';
 581                                                 if (! in_array($url, $done)) {
 582                                                         PortableContact::loadWorker(0, 0, 0, $entry->url . '/poco');
 583                                                 }
 584                                         }
 585                                 }
 586                         }
 587                 }
 588
 589                 // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
 590                 $r = q(
 591                         "SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
 592                         dbesc(NETWORK_DFRN),
 593                         dbesc(NETWORK_DIASPORA)
 594                 );
 595
 596                 if (DBM::is_result($r)) {
 597                         foreach ($r as $rr) {
 598                                 $base = substr($rr['poco'], 0, strrpos($rr['poco'], '/'));
 599                                 if (! in_array($base, $done)) {
 600                                         PortableContact::loadWorker(0, 0, 0, $base);
 601                                 }
 602                         }
 603                 }
 604         }
 605
 606         /**
 607          * @brief Removes unwanted parts from a contact url
 608          *
 609          * @param string $url Contact url
 610          *
 611          * @return string Contact url with the wanted parts
 612          */
 613         public static function cleanContactUrl($url)
 614         {
 615                 $parts = parse_url($url);
 616
 617                 if (!isset($parts["scheme"]) || !isset($parts["host"])) {
 618                         return $url;
 619                 }
 620
 621                 $new_url = $parts["scheme"]."://".$parts["host"];
 622
 623                 if (isset($parts["port"])) {
 624                         $new_url .= ":".$parts["port"];
 625                 }
 626
 627                 if (isset($parts["path"])) {
 628                         $new_url .= $parts["path"];
 629                 }
 630
 631                 if ($new_url != $url) {
 632                         logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
 633                 }
 634
 635                 return $new_url;
 636         }
 637
 638         /**
 639          * @brief Replace alternate OStatus user format with the primary one
 640          *
 641          * @param array $contact contact array (called by reference)
 642          * @return void
 643          */
 644         public static function fixAlternateContactAddress(&$contact)
 645         {
 646                 if (($contact["network"] == NETWORK_OSTATUS) && PortableContact::alternateOStatusUrl($contact["url"])) {
 647                         $data = Probe::uri($contact["url"]);
 648                         if ($contact["network"] == NETWORK_OSTATUS) {
 649                                 logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 650                                 $contact["url"] = $data["url"];
 651                                 $contact["addr"] = $data["addr"];
 652                                 $contact["alias"] = $data["alias"];
 653                                 $contact["server_url"] = $data["baseurl"];
 654                         }
 655                 }
 656         }
 657
 658         /**
 659          * @brief Fetch the gcontact id, add an entry if not existed
 660          *
 661          * @param array $contact contact array
 662          *
 663          * @return bool|int Returns false if not found, integer if contact was found
 664          */
 665         public static function getId($contact)
 666         {
 667                 $gcontact_id = 0;
 668                 $doprobing = false;
 669
 670                 if (in_array($contact["network"], [NETWORK_PHANTOM])) {
 671                         logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 672                         return false;
 673                 }
 674
 675                 if ($contact["network"] == NETWORK_STATUSNET) {
 676                         $contact["network"] = NETWORK_OSTATUS;
 677                 }
 678
 679                 // All new contacts are hidden by default
 680                 if (!isset($contact["hide"])) {
 681                         $contact["hide"] = true;
 682                 }
 683
 684                 // Replace alternate OStatus user format with the primary one
 685                 self::fixAlternateContactAddress($contact);
 686
 687                 // Remove unwanted parts from the contact url (e.g. "?zrl=...")
 688                 if (in_array($contact["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
 689                         $contact["url"] = self::cleanContactUrl($contact["url"]);
 690                 }
 691
 692                 dba::lock('gcontact');
 693                 $r = q(
 694                         "SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 695                         dbesc(normalise_link($contact["url"]))
 696                 );
 697
 698                 if (DBM::is_result($r)) {
 699                         $gcontact_id = $r[0]["id"];
 700
 701                         // Update every 90 days
 702                         if (in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
 703                                 $last_failure_str = $r[0]["last_failure"];
 704                                 $last_failure = strtotime($r[0]["last_failure"]);
 705                                 $last_contact_str = $r[0]["last_contact"];
 706                                 $last_contact = strtotime($r[0]["last_contact"]);
 707                                 $doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
 708                         }
 709                 } else {
 710                         q(
 711                                 "INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
 712                                 VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 713                                 dbesc($contact["name"]),
 714                                 dbesc($contact["nick"]),
 715                                 dbesc($contact["addr"]),
 716                                 dbesc($contact["network"]),
 717                                 dbesc($contact["url"]),
 718                                 dbesc(normalise_link($contact["url"])),
 719                                 dbesc($contact["photo"]),
 720                                 dbesc(Temporal::utcNow()),
 721                                 dbesc(Temporal::utcNow()),
 722                                 dbesc($contact["location"]),
 723                                 dbesc($contact["about"]),
 724                                 intval($contact["hide"]),
 725                                 intval($contact["generation"])
 726                         );
 727
 728                         $r = q(
 729                                 "SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
 730                                 dbesc(normalise_link($contact["url"]))
 731                         );
 732
 733                         if (DBM::is_result($r)) {
 734                                 $gcontact_id = $r[0]["id"];
 735
 736                                 $doprobing = in_array($r[0]["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""]);
 737                         }
 738                 }
 739                 dba::unlock();
 740
 741                 if ($doprobing) {
 742                         logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
 743                         Worker::add(PRIORITY_LOW, 'GProbe', $contact["url"]);
 744                 }
 745
 746                 return $gcontact_id;
 747         }
 748
 749         /**
 750          * @brief Updates the gcontact table from a given array
 751          *
 752          * @param array $contact contact array
 753          *
 754          * @return bool|int Returns false if not found, integer if contact was found
 755          */
 756         public static function update($contact)
 757         {
 758                 // Check for invalid "contact-type" value
 759                 if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
 760                         $contact['contact-type'] = 0;
 761                 }
 762
 763                 /// @todo update contact table as well
 764
 765                 $gcontact_id = self::getId($contact);
 766
 767                 if (!$gcontact_id) {
 768                         return false;
 769                 }
 770
 771                 $public_contact = q(
 772                         "SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
 773                                 `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
 774                         FROM `gcontact` WHERE `id` = %d LIMIT 1",
 775                         intval($gcontact_id)
 776                 );
 777
 778                 // Get all field names
 779                 $fields = [];
 780                 foreach ($public_contact[0] as $field => $data) {
 781                         $fields[$field] = $data;
 782                 }
 783
 784                 unset($fields["url"]);
 785                 unset($fields["updated"]);
 786                 unset($fields["hide"]);
 787
 788                 // Bugfix: We had an error in the storing of keywords which lead to the "0"
 789                 // This value is still transmitted via poco.
 790                 if ($contact["keywords"] == "0") {
 791                         unset($contact["keywords"]);
 792                 }
 793
 794                 if ($public_contact[0]["keywords"] == "0") {
 795                         $public_contact[0]["keywords"] = "";
 796                 }
 797
 798                 // assign all unassigned fields from the database entry
 799                 foreach ($fields as $field => $data) {
 800                         if (!isset($contact[$field]) || ($contact[$field] == "")) {
 801                                 $contact[$field] = $public_contact[0][$field];
 802                         }
 803                 }
 804
 805                 if (!isset($contact["hide"])) {
 806                         $contact["hide"] = $public_contact[0]["hide"];
 807                 }
 808
 809                 $fields["hide"] = $public_contact[0]["hide"];
 810
 811                 if ($contact["network"] == NETWORK_STATUSNET) {
 812                         $contact["network"] = NETWORK_OSTATUS;
 813                 }
 814
 815                 // Replace alternate OStatus user format with the primary one
 816                 self::fixAlternateContactAddress($contact);
 817
 818                 if (!isset($contact["updated"])) {
 819                         $contact["updated"] = DBM::date();
 820                 }
 821
 822                 if ($contact["network"] == NETWORK_TWITTER) {
 823                         $contact["server_url"] = 'http://twitter.com';
 824                 }
 825
 826                 if ($contact["server_url"] == "") {
 827                         $data = Probe::uri($contact["url"]);
 828                         if ($data["network"] != NETWORK_PHANTOM) {
 829                                 $contact["server_url"] = $data['baseurl'];
 830                         }
 831                 } else {
 832                         $contact["server_url"] = normalise_link($contact["server_url"]);
 833                 }
 834
 835                 if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
 836                         $hostname = str_replace("http://", "", $contact["server_url"]);
 837                         $contact["addr"] = $contact["nick"]."@".$hostname;
 838                 }
 839
 840                 // Check if any field changed
 841                 $update = false;
 842                 unset($fields["generation"]);
 843
 844                 if ((($contact["generation"] > 0) && ($contact["generation"] <= $public_contact[0]["generation"])) || ($public_contact[0]["generation"] == 0)) {
 845                         foreach ($fields as $field => $data) {
 846                                 if ($contact[$field] != $public_contact[0][$field]) {
 847                                         logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$public_contact[0][$field]."'", LOGGER_DEBUG);
 848                                         $update = true;
 849                                 }
 850                         }
 851
 852                         if ($contact["generation"] < $public_contact[0]["generation"]) {
 853                                 logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$public_contact[0]["generation"]."'", LOGGER_DEBUG);
 854                                 $update = true;
 855                         }
 856                 }
 857
 858                 if ($update) {
 859                         logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
 860                         $condition = ['`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
 861                                         normalise_link($contact["url"]), $contact["generation"]];
 862                         $contact["updated"] = DBM::date($contact["updated"]);
 863
 864                         $updated = ['photo' => $contact['photo'], 'name' => $contact['name'],
 865                                         'nick' => $contact['nick'], 'addr' => $contact['addr'],
 866                                         'network' => $contact['network'], 'birthday' => $contact['birthday'],
 867                                         'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
 868                                         'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
 869                                         'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
 870                                         'notify' => $contact['notify'], 'url' => $contact['url'],
 871                                         'location' => $contact['location'], 'about' => $contact['about'],
 872                                         'generation' => $contact['generation'], 'updated' => $contact['updated'],
 873                                         'server_url' => $contact['server_url'], 'connect' => $contact['connect']];
 874
 875                         dba::update('gcontact', $updated, $condition, $fields);
 876
 877                         // Now update the contact entry with the user id "0" as well.
 878                         // This is used for the shadow copies of public items.
 879
 880                         $public_contact = dba::selectFirst('contact', ['id'], ['nurl' => normalise_link($contact["url"]), 'uid' => 0]);
 881                         if (DBM::is_result($public_contact)) {
 882                                 logger("Update public contact ".$public_contact["id"], LOGGER_DEBUG);
 883
 884                                 Contact::updateAvatar($contact["photo"], 0, $public_contact["id"]);
 885
 886                                 $fields = ['name', 'nick', 'addr',
 887                                                 'network', 'bd', 'gender',
 888                                                 'keywords', 'alias', 'contact-type',
 889                                                 'url', 'location', 'about'];
 890                                 $old_contact = dba::selectFirst('contact', $fields, ['id' => $public_contact["id"]]);
 891
 892                                 // Update it with the current values
 893                                 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'],
 894                                                 'addr' => $contact['addr'], 'network' => $contact['network'],
 895                                                 'bd' => $contact['birthday'], 'gender' => $contact['gender'],
 896                                                 'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
 897                                                 'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
 898                                                 'location' => $contact['location'], 'about' => $contact['about']];
 899
 900                                 dba::update('contact', $fields, ['id' => $public_contact["id"]], $old_contact);
 901                         }
 902                 }
 903
 904                 return $gcontact_id;
 905         }
 906
 907         /**
 908          * @brief Updates the gcontact entry from probe
 909          *
 910          * @param string $url profile link
 911          * @return void
 912          */
 913         public static function updateFromProbe($url)
 914         {
 915                 $data = Probe::uri($url);
 916
 917                 if (in_array($data["network"], [NETWORK_PHANTOM])) {
 918                         logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
 919                         return;
 920                 }
 921
 922                 $data["server_url"] = $data["baseurl"];
 923
 924                 self::update($data);
 925         }
 926
 927         /**
 928          * @brief Update the gcontact entry for a given user id
 929          *
 930          * @param int $uid User ID
 931          * @return void
 932          */
 933         public static function updateForUser($uid)
 934         {
 935                 $r = q(
 936                         "SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
 937                                 `profile`.`name`, `profile`.`about`, `profile`.`gender`,
 938                                 `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
 939                                 `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
 940                                 `contact`.`notify`, `contact`.`url`, `contact`.`addr`
 941                         FROM `profile`
 942                                 INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
 943                                 INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
 944                         WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
 945                         intval($uid)
 946                 );
 947
 948                 $location = Profile::formatLocation(
 949                         ["locality" => $r[0]["locality"], "region" => $r[0]["region"], "country-name" => $r[0]["country-name"]]
 950                 );
 951
 952                 // The "addr" field was added in 3.4.3 so it can be empty for older users
 953                 if ($r[0]["addr"] != "") {
 954                         $addr = $r[0]["nickname"].'@'.str_replace(["http://", "https://"], "", System::baseUrl());
 955                 } else {
 956                         $addr = $r[0]["addr"];
 957                 }
 958
 959                 $gcontact = ["name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
 960                                 "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
 961                                 "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
 962                                 "notify" => $r[0]["notify"], "url" => $r[0]["url"],
 963                                 "hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
 964                                 "nick" => $r[0]["nickname"], "addr" => $addr,
 965                                 "connect" => $addr, "server_url" => System::baseUrl(),
 966                                 "generation" => 1, "network" => NETWORK_DFRN];
 967
 968                 self::update($gcontact);
 969         }
 970
 971         /**
 972          * @brief Fetches users of given GNU Social server
 973          *
 974          * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
 975          *
 976          * @param string $server Server address
 977          * @return void
 978          */
 979         public static function fetchGsUsers($server)
 980         {
 981                 logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
 982
 983                 $url = $server."/main/statistics";
 984
 985                 $result = Network::curl($url);
 986                 if (!$result["success"]) {
 987                         return false;
 988                 }
 989
 990                 $statistics = json_decode($result["body"]);
 991
 992                 if (is_object($statistics->config)) {
 993                         if ($statistics->config->instance_with_ssl) {
 994                                 $server = "https://";
 995                         } else {
 996                                 $server = "http://";
 997                         }
 998
 999                         $server .= $statistics->config->instance_address;
1000
1001                         $hostname = $statistics->config->instance_address;
1002                 } else {
1003                         /// @TODO is_object() above means here no object, still $statistics is being used as object
1004                         if ($statistics->instance_with_ssl) {
1005                                 $server = "https://";
1006                         } else {
1007                                 $server = "http://";
1008                         }
1009
1010                         $server .= $statistics->instance_address;
1011
1012                         $hostname = $statistics->instance_address;
1013                 }
1014
1015                 if (is_object($statistics->users)) {
1016                         foreach ($statistics->users as $nick => $user) {
1017                                 $profile_url = $server."/".$user->nickname;
1018
1019                                 $contact = ["url" => $profile_url,
1020                                                 "name" => $user->fullname,
1021                                                 "addr" => $user->nickname."@".$hostname,
1022                                                 "nick" => $user->nickname,
1023                                                 "about" => $user->bio,
1024                                                 "network" => NETWORK_OSTATUS,
1025                                                 "photo" => System::baseUrl()."/images/person-175.jpg"];
1026                                 self::getId($contact);
1027                         }
1028                 }
1029         }
1030
1031         /**
1032          * @brief Asking GNU Social server on a regular base for their user data
1033          * @return void
1034          */
1035         public static function discoverGsUsers()
1036         {
1037                 $requery_days = intval(Config::get("system", "poco_requery_days"));
1038
1039                 $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1040
1041                 $r = q(
1042                         "SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1043                         dbesc(NETWORK_OSTATUS),
1044                         dbesc($last_update)
1045                 );
1046
1047                 if (!DBM::is_result($r)) {
1048                         return;
1049                 }
1050
1051                 foreach ($r as $server) {
1052                         self::fetchGsUsers($server["url"]);
1053                         q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(Temporal::utcNow()), dbesc($server["nurl"]));
1054                 }
1055         }
1056
1057         /**
1058          * @return string
1059          */
1060         public static function getRandomUrl()
1061         {
1062                 $r = q(
1063                         "SELECT `url` FROM `gcontact` WHERE `network` = '%s'
1064                                         AND `last_contact` >= `last_failure`
1065                                         AND `updated` > UTC_TIMESTAMP - INTERVAL 1 MONTH
1066                                 ORDER BY rand() LIMIT 1",
1067                         dbesc(NETWORK_DFRN)
1068                 );
1069
1070                 if (DBM::is_result($r)) {
1071                         return dirname($r[0]['url']);
1072                 }
1073
1074                 return '';
1075         }
1076 }