include/socgraph.php

   1 <?php
   2 /**
   3  * @file include/socgraph.php
   4  *
   5  * @todo Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
   6  * @todo Fetch profile data from profile page for Redmatrix users
   7  * @todo Detect if it is a forum
   8  */
   9
  10 require_once('include/datetime.php');
  11 require_once("include/Scrape.php");
  12 require_once("include/network.php");
  13 require_once("include/html2bbcode.php");
  14 require_once("include/Contact.php");
  15 require_once("include/Photo.php");
  16
  17 /*
  18  * poco_load
  19  *
  20  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  21  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  22  * if anything (name or photo) has changed.
  23  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  24  *
  25  * Once the global contact is stored add (if necessary) the contact linkage which associates
  26  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  27  * pointing to the same global contact id.
  28  *
  29  */
  30
  31
  32
  33
  34 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  35
  36         $a = get_app();
  37
  38         if($cid) {
  39                 if((! $url) || (! $uid)) {
  40                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  41                                 intval($cid)
  42                         );
  43                         if (dbm::is_result($r)) {
  44                                 $url = $r[0]['poco'];
  45                                 $uid = $r[0]['uid'];
  46                         }
  47                 }
  48                 if(! $uid)
  49                         return;
  50         }
  51
  52         if(! $url)
  53                 return;
  54
  55         $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation') ;
  56
  57         logger('poco_load: ' . $url, LOGGER_DEBUG);
  58
  59         $s = fetch_url($url);
  60
  61         logger('poco_load: returns ' . $s, LOGGER_DATA);
  62
  63         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  64
  65         if(($a->get_curl_code() > 299) || (! $s))
  66                 return;
  67
  68         $j = json_decode($s);
  69
  70         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  71
  72         if(! isset($j->entry))
  73                 return;
  74
  75         $total = 0;
  76         foreach($j->entry as $entry) {
  77
  78                 $total ++;
  79                 $profile_url = '';
  80                 $profile_photo = '';
  81                 $connect_url = '';
  82                 $name = '';
  83                 $network = '';
  84                 $updated = '0000-00-00 00:00:00';
  85                 $location = '';
  86                 $about = '';
  87                 $keywords = '';
  88                 $gender = '';
  89                 $contact_type = -1;
  90                 $generation = 0;
  91
  92                 $name = $entry->displayName;
  93
  94                 if(isset($entry->urls)) {
  95                         foreach($entry->urls as $url) {
  96                                 if($url->type == 'profile') {
  97                                         $profile_url = $url->value;
  98                                         continue;
  99                                 }
 100                                 if($url->type == 'webfinger') {
 101                                         $connect_url = str_replace('acct:' , '', $url->value);
 102                                         continue;
 103                                 }
 104                         }
 105                 }
 106                 if(isset($entry->photos)) {
 107                         foreach($entry->photos as $photo) {
 108                                 if($photo->type == 'profile') {
 109                                         $profile_photo = $photo->value;
 110                                         continue;
 111                                 }
 112                         }
 113                 }
 114
 115                 if(isset($entry->updated))
 116                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 117
 118                 if(isset($entry->network))
 119                         $network = $entry->network;
 120
 121                 if(isset($entry->currentLocation))
 122                         $location = $entry->currentLocation;
 123
 124                 if(isset($entry->aboutMe))
 125                         $about = html2bbcode($entry->aboutMe);
 126
 127                 if(isset($entry->gender))
 128                         $gender = $entry->gender;
 129
 130                 if(isset($entry->generation) AND ($entry->generation > 0))
 131                         $generation = ++$entry->generation;
 132
 133                 if(isset($entry->tags))
 134                         foreach($entry->tags as $tag)
 135                                 $keywords = implode(", ", $tag);
 136
 137                 if(isset($entry->contactType) AND ($entry->contactType >= 0))
 138                         $contact_type = $entry->contactType;
 139
 140                 // If you query a Friendica server for its profiles, the network has to be Friendica
 141                 /// TODO It could also be a Redmatrix server
 142                 //if ($uid == 0)
 143                 //      $network = NETWORK_DFRN;
 144
 145                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 146
 147                 $gcontact = array("url" => $profile_url, "contact-type" => $contact_type, "generation" => $generation);
 148                 update_gcontact($gcontact);
 149
 150                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 151                 // Deactivated because we now update Friendica contacts in dfrn.php
 152                 //if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 153                 //      q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 154                 //              WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 155                 //              dbesc($location),
 156                 //              dbesc($about),
 157                 //              dbesc($keywords),
 158                 //              dbesc($gender),
 159                 //              dbesc(normalise_link($profile_url)),
 160                 //              dbesc(NETWORK_DFRN));
 161         }
 162         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 163
 164         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 165                 intval($cid),
 166                 intval($uid),
 167                 intval($zcid)
 168         );
 169
 170 }
 171
 172 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 173
 174         $a = get_app();
 175
 176         // Generation:
 177         //  0: No definition
 178         //  1: Profiles on this server
 179         //  2: Contacts of profiles on this server
 180         //  3: Contacts of contacts of profiles on this server
 181         //  4: ...
 182
 183         $gcid = "";
 184
 185         if ($profile_url == "")
 186                 return $gcid;
 187
 188         $urlparts = parse_url($profile_url);
 189         if (!isset($urlparts["scheme"]))
 190                 return $gcid;
 191
 192         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 193                                                 "identi.ca", "alpha.app.net")))
 194                 return $gcid;
 195
 196         // Don't store the statusnet connector as network
 197         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 198         if ($network == NETWORK_STATUSNET)
 199                 $network = "";
 200
 201         // Assure that there are no parameter fragments in the profile url
 202         if (in_array($network, array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, "")))
 203                 $profile_url = clean_contact_url($profile_url);
 204
 205         $alternate = poco_alternate_ostatus_url($profile_url);
 206
 207         $orig_updated = $updated;
 208
 209         // The global contacts should contain the original picture, not the cached one
 210         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link(App::get_baseurl()."/photo/"))) {
 211                 $profile_photo = "";
 212         }
 213
 214         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 215                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 216         );
 217         if (dbm::is_result($r))
 218                 $network = $r[0]["network"];
 219
 220         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 221                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 222                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 223                 );
 224                 if (dbm::is_result($r)) {
 225                         $network = $r[0]["network"];
 226                         //$profile_url = $r[0]["url"];
 227                 }
 228         }
 229
 230         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 231                 dbesc(normalise_link($profile_url))
 232         );
 233
 234         if (count($x)) {
 235                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 236                         $network = $x[0]["network"];
 237
 238                 if ($updated == "0000-00-00 00:00:00")
 239                         $updated = $x[0]["updated"];
 240
 241                 $created = $x[0]["created"];
 242                 $server_url = $x[0]["server_url"];
 243                 $nick = $x[0]["nick"];
 244                 $addr = $x[0]["addr"];
 245                 $alias =  $x[0]["alias"];
 246                 $notify =  $x[0]["notify"];
 247         } else {
 248                 $created = "0000-00-00 00:00:00";
 249                 $server_url = "";
 250
 251                 $urlparts = parse_url($profile_url);
 252                 $nick = end(explode("/", $urlparts["path"]));
 253                 $addr = "";
 254                 $alias = "";
 255                 $notify = "";
 256         }
 257
 258         if ((($network == "") OR ($name == "") OR ($addr == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 259                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 260                 $data = probe_url($profile_url);
 261
 262                 $orig_profile = $profile_url;
 263
 264                 $network = $data["network"];
 265                 $name = $data["name"];
 266                 $nick = $data["nick"];
 267                 $addr = $data["addr"];
 268                 $alias = $data["alias"];
 269                 $notify = $data["notify"];
 270                 $profile_url = $data["url"];
 271                 $profile_photo = $data["photo"];
 272                 $server_url = $data["baseurl"];
 273
 274                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 275                         // Delete the old entry - if it exists
 276                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 277                         if ($r) {
 278                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 279                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 280                         }
 281
 282                         // possibly create a new entry
 283                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 284                 }
 285         }
 286
 287         if ($alternate AND ($network == NETWORK_OSTATUS))
 288                 return $gcid;
 289
 290         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 291                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 292                         dbesc($network),
 293                         dbesc(normalise_link($profile_url))
 294                 );
 295         }
 296
 297         if (($name == "") OR ($profile_photo == ""))
 298                 return $gcid;
 299
 300         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 301                 return $gcid;
 302
 303         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 304
 305         poco_check_server($server_url, $network);
 306
 307         $gcontact = array("url" => $profile_url,
 308                         "addr" => $addr,
 309                         "alias" => $alias,
 310                         "name" => $name,
 311                         "network" => $network,
 312                         "photo" => $profile_photo,
 313                         "about" => $about,
 314                         "location" => $location,
 315                         "gender" => $gender,
 316                         "keywords" => $keywords,
 317                         "server_url" => $server_url,
 318                         "connect" => $connect_url,
 319                         "notify" => $notify,
 320                         "updated" => $updated,
 321                         "generation" => $generation);
 322
 323         $gcid = update_gcontact($gcontact);
 324
 325         if(!$gcid)
 326                 return $gcid;
 327
 328         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 329                 intval($cid),
 330                 intval($uid),
 331                 intval($gcid),
 332                 intval($zcid)
 333         );
 334         if (! dbm::is_result($r)) {
 335                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 336                         intval($cid),
 337                         intval($uid),
 338                         intval($gcid),
 339                         intval($zcid),
 340                         dbesc(datetime_convert())
 341                 );
 342         } else {
 343                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 344                         dbesc(datetime_convert()),
 345                         intval($cid),
 346                         intval($uid),
 347                         intval($gcid),
 348                         intval($zcid)
 349                 );
 350         }
 351
 352         return $gcid;
 353 }
 354
 355 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 356
 357         if ($server == "")
 358                 $server = poco_detect_server($profile);
 359
 360         if ($server == "")
 361                 return true;
 362
 363         return poco_check_server($server, $network, $force);
 364 }
 365
 366 function poco_detect_server($profile) {
 367
 368         // Try to detect the server path based upon some known standard paths
 369         $server_url = "";
 370
 371         if ($server_url == "") {
 372                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 373                 if ($friendica != $profile) {
 374                         $server_url = $friendica;
 375                         $network = NETWORK_DFRN;
 376                 }
 377         }
 378
 379         if ($server_url == "") {
 380                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 381                 if ($diaspora != $profile) {
 382                         $server_url = $diaspora;
 383                         $network = NETWORK_DIASPORA;
 384                 }
 385         }
 386
 387         if ($server_url == "") {
 388                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 389                 if ($red != $profile) {
 390                         $server_url = $red;
 391                         $network = NETWORK_DIASPORA;
 392                 }
 393         }
 394
 395         // Mastodon
 396         if ($server_url == "") {
 397                 $red = preg_replace("=(https?://)(.*)/users/(.*)=ism", "$1$2", $profile);
 398                 if ($red != $profile) {
 399                         $server_url = $red;
 400                         $network = NETWORK_OSTATUS;
 401                 }
 402         }
 403
 404         return $server_url;
 405 }
 406
 407 function poco_alternate_ostatus_url($url) {
 408         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 409 }
 410
 411 function poco_last_updated($profile, $force = false) {
 412
 413         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 414                         dbesc(normalise_link($profile)));
 415
 416         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 417                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 418                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 419
 420         if ($gcontacts[0]["server_url"] != "")
 421                 $server_url = $gcontacts[0]["server_url"];
 422         else
 423                 $server_url = poco_detect_server($profile);
 424
 425         if (!in_array($gcontacts[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_FEED, NETWORK_OSTATUS, ""))) {
 426                 logger("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", LOGGER_DEBUG);
 427                 return false;
 428         }
 429
 430         if ($server_url != "") {
 431                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 432
 433                         if ($force)
 434                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 435                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 436
 437                         logger("Profile ".$profile.": Server ".$server_url." wasn't reachable.", LOGGER_DEBUG);
 438                         return false;
 439                 }
 440
 441                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 442                         dbesc($server_url), dbesc(normalise_link($profile)));
 443         }
 444
 445         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 446                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 447                         dbesc(normalise_link($server_url)));
 448
 449                 if ($server)
 450                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 451                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 452                 else
 453                         return false;
 454         }
 455
 456         // noscrape is really fast so we don't cache the call.
 457         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 458
 459                 //  Use noscrape if possible
 460                 $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 461
 462                 if ($server) {
 463                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 464
 465                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 466
 467                                 $noscrape = json_decode($noscraperet["body"], true);
 468
 469                                 if (is_array($noscrape)) {
 470                                         $contact = array("url" => $profile,
 471                                                         "network" => $server[0]["network"],
 472                                                         "generation" => $gcontacts[0]["generation"]);
 473
 474                                         if (isset($noscrape["fn"]))
 475                                                 $contact["name"] = $noscrape["fn"];
 476
 477                                         if (isset($noscrape["comm"]))
 478                                                 $contact["community"] = $noscrape["comm"];
 479
 480                                         if (isset($noscrape["tags"])) {
 481                                                 $keywords = implode(" ", $noscrape["tags"]);
 482                                                 if ($keywords != "")
 483                                                         $contact["keywords"] = $keywords;
 484                                         }
 485
 486                                         $location = formatted_location($noscrape);
 487                                         if ($location)
 488                                                 $contact["location"] = $location;
 489
 490                                         if (isset($noscrape["dfrn-notify"]))
 491                                                 $contact["notify"] = $noscrape["dfrn-notify"];
 492
 493                                         // Remove all fields that are not present in the gcontact table
 494                                         unset($noscrape["fn"]);
 495                                         unset($noscrape["key"]);
 496                                         unset($noscrape["homepage"]);
 497                                         unset($noscrape["comm"]);
 498                                         unset($noscrape["tags"]);
 499                                         unset($noscrape["locality"]);
 500                                         unset($noscrape["region"]);
 501                                         unset($noscrape["country-name"]);
 502                                         unset($noscrape["contacts"]);
 503                                         unset($noscrape["dfrn-request"]);
 504                                         unset($noscrape["dfrn-confirm"]);
 505                                         unset($noscrape["dfrn-notify"]);
 506                                         unset($noscrape["dfrn-poll"]);
 507
 508                                         // Set the date of the last contact
 509                                         /// @todo By now the function "update_gcontact" doesn't work with this field
 510                                         //$contact["last_contact"] = datetime_convert();
 511
 512                                         $contact = array_merge($contact, $noscrape);
 513
 514                                         update_gcontact($contact);
 515
 516                                         if (trim($noscrape["updated"]) != "") {
 517                                                 q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 518                                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 519
 520                                                 logger("Profile ".$profile." was last updated at ".$noscrape["updated"]." (noscrape)", LOGGER_DEBUG);
 521
 522                                                 return $noscrape["updated"];
 523                                         }
 524                                 }
 525                         }
 526                 }
 527         }
 528
 529         // If we only can poll the feed, then we only do this once a while
 530         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"])) {
 531                 logger("Profile ".$profile." was last updated at ".$gcontacts[0]["updated"]." (cached)", LOGGER_DEBUG);
 532                 return $gcontacts[0]["updated"];
 533         }
 534
 535         $data = probe_url($profile);
 536
 537         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 538         // Then check the other link and delete this one
 539         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 540                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 541                 (normalise_link($profile) != normalise_link($data["url"]))) {
 542
 543                 // Delete the old entry
 544                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 545                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 546
 547                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 548                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 549
 550                 poco_last_updated($data["url"], $force);
 551
 552                 logger("Profile ".$profile." was deleted", LOGGER_DEBUG);
 553                 return false;
 554         }
 555
 556         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 557                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 558                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 559
 560                 logger("Profile ".$profile." wasn't reachable (profile)", LOGGER_DEBUG);
 561                 return false;
 562         }
 563
 564         $contact = array("generation" => $gcontacts[0]["generation"]);
 565
 566         $contact = array_merge($contact, $data);
 567
 568         $contact["server_url"] = $data["baseurl"];
 569
 570         unset($contact["batch"]);
 571         unset($contact["poll"]);
 572         unset($contact["request"]);
 573         unset($contact["confirm"]);
 574         unset($contact["poco"]);
 575         unset($contact["priority"]);
 576         unset($contact["pubkey"]);
 577         unset($contact["baseurl"]);
 578
 579         update_gcontact($contact);
 580
 581         $feedret = z_fetch_url($data["poll"]);
 582
 583         if (!$feedret["success"]) {
 584                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 585                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 586
 587                 logger("Profile ".$profile." wasn't reachable (no feed)", LOGGER_DEBUG);
 588                 return false;
 589         }
 590
 591         $doc = new DOMDocument();
 592         @$doc->loadXML($feedret["body"]);
 593
 594         $xpath = new DomXPath($doc);
 595         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 596
 597         $entries = $xpath->query('/atom:feed/atom:entry');
 598
 599         $last_updated = "";
 600
 601         foreach ($entries AS $entry) {
 602                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 603                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 604
 605                 if ($last_updated < $published)
 606                         $last_updated = $published;
 607
 608                 if ($last_updated < $updated)
 609                         $last_updated = $updated;
 610         }
 611
 612         // Maybe there aren't any entries. Then check if it is a valid feed
 613         if ($last_updated == "")
 614                 if ($xpath->query('/atom:feed')->length > 0)
 615                         $last_updated = "0000-00-00 00:00:00";
 616
 617         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 618                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 619
 620         if (($gcontacts[0]["generation"] == 0))
 621                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 622                         dbesc(normalise_link($profile)));
 623
 624         logger("Profile ".$profile." was last updated at ".$last_updated, LOGGER_DEBUG);
 625
 626         return($last_updated);
 627 }
 628
 629 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 630         $now = strtotime(datetime_convert());
 631
 632         if ($updated > $last_contact)
 633                 $contact_time = strtotime($updated);
 634         else
 635                 $contact_time = strtotime($last_contact);
 636
 637         $failure_time = strtotime($last_failure);
 638         $created_time = strtotime($created);
 639
 640         // If there is no "created" time then use the current time
 641         if ($created_time <= 0)
 642                 $created_time = $now;
 643
 644         // If the last contact was less than 24 hours then don't update
 645         if (($now - $contact_time) < (60 * 60 * 24))
 646                 return false;
 647
 648         // If the last failure was less than 24 hours then don't update
 649         if (($now - $failure_time) < (60 * 60 * 24))
 650                 return false;
 651
 652         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 653         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 654         //      return false;
 655
 656         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 657         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 658                 return false;
 659
 660         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 661         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 662                 return false;
 663
 664         return true;
 665 }
 666
 667 function poco_to_boolean($val) {
 668         if (($val == "true") OR ($val == 1))
 669                 return(true);
 670         if (($val == "false") OR ($val == 0))
 671                 return(false);
 672
 673         return ($val);
 674 }
 675
 676 function poco_check_server($server_url, $network = "", $force = false) {
 677
 678         // Unify the server address
 679         $server_url = trim($server_url, "/");
 680         $server_url = str_replace("/index.php", "", $server_url);
 681
 682         if ($server_url == "")
 683                 return false;
 684
 685         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 686         if ($servers) {
 687
 688                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 689                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 690                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 691
 692                 $poco = $servers[0]["poco"];
 693                 $noscrape = $servers[0]["noscrape"];
 694
 695                 if ($network == "")
 696                         $network = $servers[0]["network"];
 697
 698                 $last_contact = $servers[0]["last_contact"];
 699                 $last_failure = $servers[0]["last_failure"];
 700                 $version = $servers[0]["version"];
 701                 $platform = $servers[0]["platform"];
 702                 $site_name = $servers[0]["site_name"];
 703                 $info = $servers[0]["info"];
 704                 $register_policy = $servers[0]["register_policy"];
 705
 706                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 707                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 708                         return ($last_contact >= $last_failure);
 709                 }
 710         } else {
 711                 $poco = "";
 712                 $noscrape = "";
 713                 $version = "";
 714                 $platform = "";
 715                 $site_name = "";
 716                 $info = "";
 717                 $register_policy = -1;
 718
 719                 $last_contact = "0000-00-00 00:00:00";
 720                 $last_failure = "0000-00-00 00:00:00";
 721         }
 722         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 723
 724         $failure = false;
 725         $orig_last_failure = $last_failure;
 726
 727         // Check if the page is accessible via SSL.
 728         $server_url = str_replace("http://", "https://", $server_url);
 729         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 730
 731         // Maybe the page is unencrypted only?
 732         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 733         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 734                 $server_url = str_replace("https://", "http://", $server_url);
 735                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 736
 737                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 738         }
 739
 740         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 741                 // Workaround for bad configured servers (known nginx problem)
 742                 if ($serverret["debug"]["http_code"] != "403") {
 743                         $last_failure = datetime_convert();
 744                         $failure = true;
 745                 }
 746         } elseif ($network == NETWORK_DIASPORA)
 747                 $last_contact = datetime_convert();
 748
 749         if (!$failure) {
 750                 // Test for Diaspora
 751                 $serverret = z_fetch_url($server_url);
 752
 753                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 754                         $failure = true;
 755                 else {
 756                         $lines = explode("\n",$serverret["header"]);
 757                         if(count($lines))
 758                                 foreach($lines as $line) {
 759                                         $line = trim($line);
 760                                         if(stristr($line,'X-Diaspora-Version:')) {
 761                                                 $platform = "Diaspora";
 762                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 763                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 764                                                 $network = NETWORK_DIASPORA;
 765                                                 $versionparts = explode("-", $version);
 766                                                 $version = $versionparts[0];
 767                                         }
 768
 769                                         if(stristr($line,'Server: Mastodon')) {
 770                                                 $platform = "Mastodon";
 771                                                 $network = NETWORK_OSTATUS;
 772                                                 // Mastodon doesn't reveal version numbers
 773                                                 $version = "";
 774                                         }
 775                                 }
 776                 }
 777         }
 778
 779         if (!$failure) {
 780                 // Test for Statusnet
 781                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 782                 // The "not implemented" is a special treatment for really, really old Friendica versions
 783                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 784                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 785                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 786                         $platform = "StatusNet";
 787                         $version = trim($serverret["body"], '"');
 788                         $network = NETWORK_OSTATUS;
 789                 }
 790
 791                 // Test for GNU Social
 792                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 793                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 794                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 795                         $platform = "GNU Social";
 796                         $version = trim($serverret["body"], '"');
 797                         $network = NETWORK_OSTATUS;
 798                 }
 799
 800                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 801                 if ($serverret["success"]) {
 802                         $data = json_decode($serverret["body"]);
 803
 804                         if (isset($data->site->server)) {
 805                                 $last_contact = datetime_convert();
 806
 807                                 if (isset($data->site->hubzilla)) {
 808                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 809                                         $version = $data->site->hubzilla->RED_VERSION;
 810                                         $network = NETWORK_DIASPORA;
 811                                 }
 812                                 if (isset($data->site->redmatrix)) {
 813                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 814                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 815                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 816                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 817
 818                                         $version = $data->site->redmatrix->RED_VERSION;
 819                                         $network = NETWORK_DIASPORA;
 820                                 }
 821                                 if (isset($data->site->friendica)) {
 822                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 823                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 824                                         $network = NETWORK_DFRN;
 825                                 }
 826
 827                                 $site_name = $data->site->name;
 828
 829                                 $data->site->closed = poco_to_boolean($data->site->closed);
 830                                 $data->site->private = poco_to_boolean($data->site->private);
 831                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 832
 833                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 834                                         $register_policy = REGISTER_APPROVE;
 835                                 elseif (!$data->site->closed AND !$data->site->private)
 836                                         $register_policy = REGISTER_OPEN;
 837                                 else
 838                                         $register_policy = REGISTER_CLOSED;
 839                         }
 840                 }
 841         }
 842
 843         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 844         if (!$failure) {
 845                 $serverret = z_fetch_url($server_url."/statistics.json");
 846                 if ($serverret["success"]) {
 847                         $data = json_decode($serverret["body"]);
 848                         if ($version == "")
 849                                 $version = $data->version;
 850
 851                         $site_name = $data->name;
 852
 853                         if (isset($data->network) AND ($platform == ""))
 854                                 $platform = $data->network;
 855
 856                         if ($platform == "Diaspora")
 857                                 $network = NETWORK_DIASPORA;
 858
 859                         if ($data->registrations_open)
 860                                 $register_policy = REGISTER_OPEN;
 861                         else
 862                                 $register_policy = REGISTER_CLOSED;
 863
 864                         if (isset($data->version))
 865                                 $last_contact = datetime_convert();
 866                 }
 867         }
 868
 869         // Check for noscrape
 870         // Friendica servers could be detected as OStatus servers
 871         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 872                 $serverret = z_fetch_url($server_url."/friendica/json");
 873
 874                 if (!$serverret["success"])
 875                         $serverret = z_fetch_url($server_url."/friendika/json");
 876
 877                 if ($serverret["success"]) {
 878                         $data = json_decode($serverret["body"]);
 879
 880                         if (isset($data->version)) {
 881                                 $last_contact = datetime_convert();
 882                                 $network = NETWORK_DFRN;
 883
 884                                 $noscrape = $data->no_scrape_url;
 885                                 $version = $data->version;
 886                                 $site_name = $data->site_name;
 887                                 $info = $data->info;
 888                                 $register_policy_str = $data->register_policy;
 889                                 $platform = $data->platform;
 890
 891                                 switch ($register_policy_str) {
 892                                         case "REGISTER_CLOSED":
 893                                                 $register_policy = REGISTER_CLOSED;
 894                                                 break;
 895                                         case "REGISTER_APPROVE":
 896                                                 $register_policy = REGISTER_APPROVE;
 897                                                 break;
 898                                         case "REGISTER_OPEN":
 899                                                 $register_policy = REGISTER_OPEN;
 900                                                 break;
 901                                 }
 902                         }
 903                 }
 904         }
 905
 906         // Look for poco
 907         if (!$failure) {
 908                 $serverret = z_fetch_url($server_url."/poco");
 909                 if ($serverret["success"]) {
 910                         $data = json_decode($serverret["body"]);
 911                         if (isset($data->totalResults)) {
 912                                 $poco = $server_url."/poco";
 913                                 $last_contact = datetime_convert();
 914                         }
 915                 }
 916         }
 917
 918         // Check again if the server exists
 919         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 920
 921         $version = strip_tags($version);
 922         $site_name = strip_tags($site_name);
 923         $info = strip_tags($info);
 924         $platform = strip_tags($platform);
 925
 926         if ($servers)
 927                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 928                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 929                         dbesc($server_url),
 930                         dbesc($version),
 931                         dbesc($site_name),
 932                         dbesc($info),
 933                         intval($register_policy),
 934                         dbesc($poco),
 935                         dbesc($noscrape),
 936                         dbesc($network),
 937                         dbesc($platform),
 938                         dbesc($last_contact),
 939                         dbesc($last_failure),
 940                         dbesc(normalise_link($server_url))
 941                 );
 942         else
 943                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 944                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 945                                 dbesc($server_url),
 946                                 dbesc(normalise_link($server_url)),
 947                                 dbesc($version),
 948                                 dbesc($site_name),
 949                                 dbesc($info),
 950                                 intval($register_policy),
 951                                 dbesc($poco),
 952                                 dbesc($noscrape),
 953                                 dbesc($network),
 954                                 dbesc($platform),
 955                                 dbesc(datetime_convert()),
 956                                 dbesc($last_contact),
 957                                 dbesc($last_failure),
 958                                 dbesc(datetime_convert())
 959                 );
 960
 961         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 962
 963         return !$failure;
 964 }
 965
 966 function count_common_friends($uid,$cid) {
 967
 968         $r = q("SELECT count(*) as `total`
 969                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 970                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 971                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 972                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 973                 intval($cid),
 974                 intval($uid),
 975                 intval($uid),
 976                 intval($cid)
 977         );
 978
 979 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
 980         if (dbm::is_result($r))
 981                 return $r[0]['total'];
 982         return 0;
 983
 984 }
 985
 986
 987 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
 988
 989         if($shuffle)
 990                 $sql_extra = " order by rand() ";
 991         else
 992                 $sql_extra = " order by `gcontact`.`name` asc ";
 993
 994         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
 995                 FROM `glink`
 996                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 997                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 998                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 999                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
1000                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
1001                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1002                         $sql_extra LIMIT %d, %d",
1003                 intval($cid),
1004                 intval($uid),
1005                 intval($uid),
1006                 intval($cid),
1007                 intval($start),
1008                 intval($limit)
1009         );
1010
1011         return $r;
1012
1013 }
1014
1015
1016 function count_common_friends_zcid($uid,$zcid) {
1017
1018         $r = q("SELECT count(*) as `total`
1019                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1020                 where `glink`.`zcid` = %d
1021                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1022                 intval($zcid),
1023                 intval($uid)
1024         );
1025
1026         if (dbm::is_result($r))
1027                 return $r[0]['total'];
1028         return 0;
1029
1030 }
1031
1032 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1033
1034         if($shuffle)
1035                 $sql_extra = " order by rand() ";
1036         else
1037                 $sql_extra = " order by `gcontact`.`name` asc ";
1038
1039         $r = q("SELECT `gcontact`.*
1040                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1041                 where `glink`.`zcid` = %d
1042                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1043                 $sql_extra limit %d, %d",
1044                 intval($zcid),
1045                 intval($uid),
1046                 intval($start),
1047                 intval($limit)
1048         );
1049
1050         return $r;
1051
1052 }
1053
1054
1055 function count_all_friends($uid,$cid) {
1056
1057         $r = q("SELECT count(*) as `total`
1058                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1059                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1060                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1061                 intval($cid),
1062                 intval($uid)
1063         );
1064
1065         if (dbm::is_result($r))
1066                 return $r[0]['total'];
1067         return 0;
1068
1069 }
1070
1071
1072 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1073
1074         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1075                 FROM `glink`
1076                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1077                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1078                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1079                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1080                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1081                 intval($uid),
1082                 intval($cid),
1083                 intval($uid),
1084                 intval($start),
1085                 intval($limit)
1086         );
1087
1088         return $r;
1089 }
1090
1091
1092
1093 function suggestion_query($uid, $start = 0, $limit = 80) {
1094
1095         if (!$uid) {
1096                 return array();
1097         }
1098
1099 // Uncommented because the result of the queries are to big to store it in the cache.
1100 // We need to decide if we want to change the db column type or if we want to delete it.
1101 //      $list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
1102 //      if (!is_null($list)) {
1103 //              return $list;
1104 //      }
1105
1106         $network = array(NETWORK_DFRN);
1107
1108         if (get_config('system','diaspora_enabled'))
1109                 $network[] = NETWORK_DIASPORA;
1110
1111         if (!get_config('system','ostatus_disabled'))
1112                 $network[] = NETWORK_OSTATUS;
1113
1114         $sql_network = implode("', '", $network);
1115         $sql_network = "'".$sql_network."'";
1116
1117         /// @todo This query is really slow
1118         // By now we cache the data for five minutes
1119         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1120                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1121                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1122                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1123                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1124                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1125                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1126                 AND `gcontact`.`network` IN (%s)
1127                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1128                 intval($uid),
1129                 intval($uid),
1130                 intval($uid),
1131                 intval($uid),
1132                 $sql_network,
1133                 intval($start),
1134                 intval($limit)
1135         );
1136
1137         if (dbm::is_result($r) && count($r) >= ($limit -1)) {
1138 // Uncommented because the result of the queries are to big to store it in the cache.
1139 // We need to decide if we want to change the db column type or if we want to delete it.
1140 //              Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
1141
1142                 return $r;
1143         }
1144
1145         $r2 = q("SELECT gcontact.* FROM gcontact
1146                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1147                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1148                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1149                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1150                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1151                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1152                 AND `gcontact`.`network` IN (%s)
1153                 ORDER BY rand() LIMIT %d, %d",
1154                 intval($uid),
1155                 intval($uid),
1156                 intval($uid),
1157                 $sql_network,
1158                 intval($start),
1159                 intval($limit)
1160         );
1161
1162         $list = array();
1163         foreach ($r2 AS $suggestion)
1164                 $list[$suggestion["nurl"]] = $suggestion;
1165
1166         foreach ($r AS $suggestion)
1167                 $list[$suggestion["nurl"]] = $suggestion;
1168
1169         while (sizeof($list) > ($limit))
1170                 array_pop($list);
1171
1172 // Uncommented because the result of the queries are to big to store it in the cache.
1173 // We need to decide if we want to change the db column type or if we want to delete it.
1174 //      Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
1175         return $list;
1176 }
1177
1178 function update_suggestions() {
1179
1180         $a = get_app();
1181
1182         $done = array();
1183
1184         /// TODO Check if it is really neccessary to poll the own server
1185         poco_load(0,0,0,App::get_baseurl() . '/poco');
1186
1187         $done[] = App::get_baseurl() . '/poco';
1188
1189         if(strlen(get_config('system','directory'))) {
1190                 $x = fetch_url(get_server()."/pubsites");
1191                 if($x) {
1192                         $j = json_decode($x);
1193                         if($j->entries) {
1194                                 foreach($j->entries as $entry) {
1195
1196                                         poco_check_server($entry->url);
1197
1198                                         $url = $entry->url . '/poco';
1199                                         if(! in_array($url,$done))
1200                                                 poco_load(0,0,0,$entry->url . '/poco');
1201                                 }
1202                         }
1203                 }
1204         }
1205
1206         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1207         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1208                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1209         );
1210
1211         if (dbm::is_result($r)) {
1212                 foreach($r as $rr) {
1213                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1214                         if(! in_array($base,$done))
1215                                 poco_load(0,0,0,$base);
1216                 }
1217         }
1218 }
1219
1220 function poco_discover_federation() {
1221         $last = get_config('poco','last_federation_discovery');
1222
1223         if($last) {
1224                 $next = $last + (24 * 60 * 60);
1225                 if($next > time())
1226                         return;
1227         }
1228
1229         // Discover Friendica, Hubzilla and Diaspora servers
1230         $serverdata = fetch_url("http://the-federation.info/pods.json");
1231
1232         if ($serverdata) {
1233                 $servers = json_decode($serverdata);
1234
1235                 foreach($servers->pods AS $server)
1236                         poco_check_server("https://".$server->host);
1237         }
1238
1239         // Discover GNU Social Servers
1240         if (!get_config('system','ostatus_disabled')) {
1241                 $serverdata = "http://gstools.org/api/get_open_instances/";
1242
1243                 $result = z_fetch_url($serverdata);
1244                 if ($result["success"]) {
1245                         $servers = json_decode($result["body"]);
1246
1247                         foreach($servers->data AS $server)
1248                                 poco_check_server($server->instance_address);
1249                 }
1250         }
1251
1252         set_config('poco','last_federation_discovery', time());
1253 }
1254
1255 function poco_discover($complete = false) {
1256
1257         // Update the server list
1258         poco_discover_federation();
1259
1260         $no_of_queries = 5;
1261
1262         $requery_days = intval(get_config("system", "poco_requery_days"));
1263
1264         if ($requery_days == 0)
1265                 $requery_days = 7;
1266
1267         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1268
1269         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1270         if ($r)
1271                 foreach ($r AS $server) {
1272
1273                         if (!poco_check_server($server["url"], $server["network"])) {
1274                                 // The server is not reachable? Okay, then we will try it later
1275                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1276                                 continue;
1277                         }
1278
1279                         // Fetch all users from the other server
1280                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1281
1282                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1283
1284                         $retdata = z_fetch_url($url);
1285                         if ($retdata["success"]) {
1286                                 $data = json_decode($retdata["body"]);
1287
1288                                 poco_discover_server($data, 2);
1289
1290                                 if (get_config('system','poco_discovery') > 1) {
1291
1292                                         $timeframe = get_config('system','poco_discovery_since');
1293                                         if ($timeframe == 0)
1294                                                 $timeframe = 30;
1295
1296                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1297
1298                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1299                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1300
1301                                         $success = false;
1302
1303                                         $retdata = z_fetch_url($url);
1304                                         if ($retdata["success"]) {
1305                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1306                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1307                                         }
1308
1309                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1310                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1311                                                 poco_discover_server_users($data, $server);
1312                                         }
1313                                 }
1314
1315                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1316                                 if (!$complete AND (--$no_of_queries == 0))
1317                                         break;
1318                         } else {
1319                                 // If the server hadn't replied correctly, then force a sanity check
1320                                 poco_check_server($server["url"], $server["network"], true);
1321
1322                                 // If we couldn't reach the server, we will try it some time later
1323                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1324                         }
1325                 }
1326 }
1327
1328 function poco_discover_server_users($data, $server) {
1329
1330         if (!isset($data->entry))
1331                 return;
1332
1333         foreach ($data->entry AS $entry) {
1334                 $username = "";
1335                 if (isset($entry->urls)) {
1336                         foreach($entry->urls as $url)
1337                                 if($url->type == 'profile') {
1338                                         $profile_url = $url->value;
1339                                         $urlparts = parse_url($profile_url);
1340                                         $username = end(explode("/", $urlparts["path"]));
1341                                 }
1342                 }
1343                 if ($username != "") {
1344                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1345
1346                         // Fetch all contacts from a given user from the other server
1347                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1348
1349                         $retdata = z_fetch_url($url);
1350                         if ($retdata["success"])
1351                                 poco_discover_server(json_decode($retdata["body"]), 3);
1352                 }
1353         }
1354 }
1355
1356 function poco_discover_server($data, $default_generation = 0) {
1357
1358         if (!isset($data->entry) OR !count($data->entry))
1359                 return false;
1360
1361         $success = false;
1362
1363         foreach ($data->entry AS $entry) {
1364                 $profile_url = '';
1365                 $profile_photo = '';
1366                 $connect_url = '';
1367                 $name = '';
1368                 $network = '';
1369                 $updated = '0000-00-00 00:00:00';
1370                 $location = '';
1371                 $about = '';
1372                 $keywords = '';
1373                 $gender = '';
1374                 $contact_type = -1;
1375                 $generation = $default_generation;
1376
1377                 $name = $entry->displayName;
1378
1379                 if(isset($entry->urls)) {
1380                         foreach($entry->urls as $url) {
1381                                 if($url->type == 'profile') {
1382                                         $profile_url = $url->value;
1383                                         continue;
1384                                 }
1385                                 if($url->type == 'webfinger') {
1386                                         $connect_url = str_replace('acct:' , '', $url->value);
1387                                         continue;
1388                                 }
1389                         }
1390                 }
1391
1392                 if(isset($entry->photos)) {
1393                         foreach($entry->photos as $photo) {
1394                                 if($photo->type == 'profile') {
1395                                         $profile_photo = $photo->value;
1396                                         continue;
1397                                 }
1398                         }
1399                 }
1400
1401                 if(isset($entry->updated))
1402                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1403
1404                 if(isset($entry->network))
1405                         $network = $entry->network;
1406
1407                 if(isset($entry->currentLocation))
1408                         $location = $entry->currentLocation;
1409
1410                 if(isset($entry->aboutMe))
1411                         $about = html2bbcode($entry->aboutMe);
1412
1413                 if(isset($entry->gender))
1414                         $gender = $entry->gender;
1415
1416                 if(isset($entry->generation) AND ($entry->generation > 0))
1417                         $generation = ++$entry->generation;
1418
1419                 if(isset($entry->contactType) AND ($entry->contactType >= 0))
1420                         $contact_type = $entry->contactType;
1421
1422                 if(isset($entry->tags))
1423                         foreach($entry->tags as $tag)
1424                                 $keywords = implode(", ", $tag);
1425
1426                 if ($generation > 0) {
1427                         $success = true;
1428
1429                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1430                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1431
1432                         $gcontact = array("url" => $profile_url, "contact-type" => $contact_type, "generation" => $generation);
1433                         update_gcontact($gcontact);
1434
1435                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1436                 }
1437         }
1438         return $success;
1439 }
1440
1441 /**
1442  * @brief Removes unwanted parts from a contact url
1443  *
1444  * @param string $url Contact url
1445  * @return string Contact url with the wanted parts
1446  */
1447 function clean_contact_url($url) {
1448         $parts = parse_url($url);
1449
1450         if (!isset($parts["scheme"]) OR !isset($parts["host"]))
1451                 return $url;
1452
1453         $new_url = $parts["scheme"]."://".$parts["host"];
1454
1455         if (isset($parts["port"]))
1456                 $new_url .= ":".$parts["port"];
1457
1458         if (isset($parts["path"]))
1459                 $new_url .= $parts["path"];
1460
1461         if ($new_url != $url)
1462                 logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".App::callstack(), LOGGER_DEBUG);
1463
1464         return $new_url;
1465 }
1466
1467 /**
1468  * @brief Replace alternate OStatus user format with the primary one
1469  *
1470  * @param arr $contact contact array (called by reference)
1471  */
1472 function fix_alternate_contact_address(&$contact) {
1473         if (($contact["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($contact["url"])) {
1474                 $data = probe_url($contact["url"]);
1475                 if ($contact["network"] == NETWORK_OSTATUS) {
1476                         logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1477                         $contact["url"] = $data["url"];
1478                         $contact["addr"] = $data["addr"];
1479                         $contact["alias"] = $data["alias"];
1480                         $contact["server_url"] = $data["baseurl"];
1481                 }
1482         }
1483 }
1484
1485 /**
1486  * @brief Fetch the gcontact id, add an entry if not existed
1487  *
1488  * @param arr $contact contact array
1489  * @return bool|int Returns false if not found, integer if contact was found
1490  */
1491 function get_gcontact_id($contact) {
1492
1493         $gcontact_id = 0;
1494         $doprobing = false;
1495
1496         if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
1497                 logger("Invalid network for contact url ".$contact["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1498                 return false;
1499         }
1500
1501         if ($contact["network"] == NETWORK_STATUSNET)
1502                 $contact["network"] = NETWORK_OSTATUS;
1503
1504         // All new contacts are hidden by default
1505         if (!isset($contact["hide"]))
1506                 $contact["hide"] = true;
1507
1508         // Replace alternate OStatus user format with the primary one
1509         fix_alternate_contact_address($contact);
1510
1511         // Remove unwanted parts from the contact url (e.g. "?zrl=...")
1512         if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS)))
1513                 $contact["url"] = clean_contact_url($contact["url"]);
1514
1515         $r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1516                 dbesc(normalise_link($contact["url"])));
1517
1518         if ($r) {
1519                 $gcontact_id = $r[0]["id"];
1520
1521                 // Update every 90 days
1522                 if (in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
1523                         $last_failure_str = $r[0]["last_failure"];
1524                         $last_failure = strtotime($r[0]["last_failure"]);
1525                         $last_contact_str = $r[0]["last_contact"];
1526                         $last_contact = strtotime($r[0]["last_contact"]);
1527                         $doprobing = (((time() - $last_contact) > (90 * 86400)) AND ((time() - $last_failure) > (90 * 86400)));
1528                 }
1529         } else {
1530                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
1531                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
1532                         dbesc($contact["name"]),
1533                         dbesc($contact["nick"]),
1534                         dbesc($contact["addr"]),
1535                         dbesc($contact["network"]),
1536                         dbesc($contact["url"]),
1537                         dbesc(normalise_link($contact["url"])),
1538                         dbesc($contact["photo"]),
1539                         dbesc(datetime_convert()),
1540                         dbesc(datetime_convert()),
1541                         dbesc($contact["location"]),
1542                         dbesc($contact["about"]),
1543                         intval($contact["hide"]),
1544                         intval($contact["generation"])
1545                 );
1546
1547                 $r = q("SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1548                         dbesc(normalise_link($contact["url"])));
1549
1550                 if ($r) {
1551                         $gcontact_id = $r[0]["id"];
1552
1553                         $doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
1554                 }
1555         }
1556
1557         if ($doprobing) {
1558                 logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
1559                 proc_run(PRIORITY_LOW, 'include/gprobe.php', bin2hex($contact["url"]));
1560         }
1561
1562         if ((dbm::is_result($r)) AND (count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1563          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1564                 dbesc(normalise_link($contact["url"])),
1565                 intval($gcontact_id));
1566
1567         return $gcontact_id;
1568 }
1569
1570 /**
1571  * @brief Updates the gcontact table from a given array
1572  *
1573  * @param arr $contact contact array
1574  * @return bool|int Returns false if not found, integer if contact was found
1575  */
1576 function update_gcontact($contact) {
1577
1578         /// @todo update contact table as well
1579
1580         $gcontact_id = get_gcontact_id($contact);
1581
1582         if (!$gcontact_id)
1583                 return false;
1584
1585         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1586                         `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1587                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1588                 intval($gcontact_id));
1589
1590         // Get all field names
1591         $fields = array();
1592         foreach ($r[0] AS $field => $data)
1593                 $fields[$field] = $data;
1594
1595         unset($fields["url"]);
1596         unset($fields["updated"]);
1597         unset($fields["hide"]);
1598
1599         // Bugfix: We had an error in the storing of keywords which lead to the "0"
1600         // This value is still transmitted via poco.
1601         if ($contact["keywords"] == "0")
1602                 unset($contact["keywords"]);
1603
1604         if ($r[0]["keywords"] == "0")
1605                 $r[0]["keywords"] = "";
1606
1607         // assign all unassigned fields from the database entry
1608         foreach ($fields AS $field => $data)
1609                 if (!isset($contact[$field]) OR ($contact[$field] == ""))
1610                         $contact[$field] = $r[0][$field];
1611
1612         if (!isset($contact["hide"]))
1613                 $contact["hide"] = $r[0]["hide"];
1614
1615         $fields["hide"] = $r[0]["hide"];
1616
1617         if ($contact["network"] == NETWORK_STATUSNET)
1618                 $contact["network"] = NETWORK_OSTATUS;
1619
1620         // Replace alternate OStatus user format with the primary one
1621         fix_alternate_contact_address($contact);
1622
1623         if (!isset($contact["updated"]))
1624                 $contact["updated"] = datetime_convert();
1625
1626         if ($contact["server_url"] == "") {
1627                 $server_url = $contact["url"];
1628
1629                 $server_url = matching_url($server_url, $contact["alias"]);
1630                 if ($server_url != "")
1631                         $contact["server_url"] = $server_url;
1632
1633                 $server_url = matching_url($server_url, $contact["photo"]);
1634                 if ($server_url != "")
1635                         $contact["server_url"] = $server_url;
1636
1637                 $server_url = matching_url($server_url, $contact["notify"]);
1638                 if ($server_url != "")
1639                         $contact["server_url"] = $server_url;
1640         } else
1641                 $contact["server_url"] = normalise_link($contact["server_url"]);
1642
1643         if (($contact["addr"] == "") AND ($contact["server_url"] != "") AND ($contact["nick"] != "")) {
1644                 $hostname = str_replace("http://", "", $contact["server_url"]);
1645                 $contact["addr"] = $contact["nick"]."@".$hostname;
1646         }
1647
1648         // Check if any field changed
1649         $update = false;
1650         unset($fields["generation"]);
1651
1652         if ((($contact["generation"] > 0) AND ($contact["generation"] <= $r[0]["generation"])) OR ($r[0]["generation"] == 0)) {
1653                 foreach ($fields AS $field => $data)
1654                         if ($contact[$field] != $r[0][$field]) {
1655                                 logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
1656                                 $update = true;
1657                         }
1658
1659                 if ($contact["generation"] < $r[0]["generation"]) {
1660                         logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
1661                         $update = true;
1662                 }
1663         }
1664
1665         if ($update) {
1666                 logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
1667
1668                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1669                                         `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
1670                                         `contact-type` = %d, `alias` = '%s', `notify` = '%s', `url` = '%s',
1671                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1672                                         `server_url` = '%s', `connect` = '%s'
1673                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1674                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1675                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1676                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1677                         intval($contact["nsfw"]), intval($contact["contact-type"]), dbesc($contact["alias"]),
1678                         dbesc($contact["notify"]), dbesc($contact["url"]), dbesc($contact["location"]),
1679                         dbesc($contact["about"]), intval($contact["generation"]), dbesc($contact["updated"]),
1680                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1681                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1682
1683
1684                 // Now update the contact entry with the user id "0" as well.
1685                 // This is used for the shadow copies of public items.
1686                 $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
1687                         dbesc(normalise_link($contact["url"])));
1688
1689                 if ($r) {
1690                         logger("Update shadow contact ".$r[0]["id"], LOGGER_DEBUG);
1691
1692                         update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
1693
1694                         q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s',
1695                                                 `network` = '%s', `bd` = '%s', `gender` = '%s',
1696                                                 `keywords` = '%s', `alias` = '%s', `contact-type` = %d,
1697                                                 `url` = '%s', `location` = '%s', `about` = '%s'
1698                                         WHERE `id` = %d",
1699                                 dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["addr"]),
1700                                 dbesc($contact["network"]), dbesc($contact["birthday"]), dbesc($contact["gender"]),
1701                                 dbesc($contact["keywords"]), dbesc($contact["alias"]), intval($contact["contact-type"]),
1702                                 dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1703                                 intval($r[0]["id"]));
1704                 }
1705         }
1706
1707         return $gcontact_id;
1708 }
1709
1710 /**
1711  * @brief Updates the gcontact entry from probe
1712  *
1713  * @param str $url profile link
1714  */
1715 function update_gcontact_from_probe($url) {
1716         $data = probe_url($url);
1717
1718         if (in_array($data["network"], array(NETWORK_PHANTOM))) {
1719                 logger("Invalid network for contact url ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1720                 return;
1721         }
1722
1723         update_gcontact($data);
1724 }
1725
1726 /**
1727  * @brief Update the gcontact entry for a given user id
1728  *
1729  * @param int $uid User ID
1730  */
1731 function update_gcontact_for_user($uid) {
1732         $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
1733                         `profile`.`name`, `profile`.`about`, `profile`.`gender`,
1734                         `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
1735                         `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
1736                         `contact`.`notify`, `contact`.`url`, `contact`.`addr`
1737                 FROM `profile`
1738                         INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
1739                         INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
1740                 WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
1741                 intval($uid));
1742
1743         $location = formatted_location(array("locality" => $r[0]["locality"], "region" => $r[0]["region"],
1744                                                 "country-name" => $r[0]["country-name"]));
1745
1746         // The "addr" field was added in 3.4.3 so it can be empty for older users
1747         if ($r[0]["addr"] != "")
1748                 $addr = $r[0]["nickname"].'@'.str_replace(array("http://", "https://"), "", App::get_baseurl());
1749         else
1750                 $addr = $r[0]["addr"];
1751
1752         $gcontact = array("name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
1753                         "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
1754                         "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
1755                         "notify" => $r[0]["notify"], "url" => $r[0]["url"],
1756                         "hide" => ($r[0]["hidewall"] OR !$r[0]["net-publish"]),
1757                         "nick" => $r[0]["nickname"], "addr" => $addr,
1758                         "connect" => $addr, "server_url" => App::get_baseurl(),
1759                         "generation" => 1, "network" => NETWORK_DFRN);
1760
1761         update_gcontact($gcontact);
1762 }
1763
1764 /**
1765  * @brief Fetches users of given GNU Social server
1766  *
1767  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1768  *
1769  * @param str $server Server address
1770  */
1771 function gs_fetch_users($server) {
1772
1773         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1774
1775         $url = $server."/main/statistics";
1776
1777         $result = z_fetch_url($url);
1778         if (!$result["success"])
1779                 return false;
1780
1781         $statistics = json_decode($result["body"]);
1782
1783         if (is_object($statistics->config)) {
1784                 if ($statistics->config->instance_with_ssl)
1785                         $server = "https://";
1786                 else
1787                         $server = "http://";
1788
1789                 $server .= $statistics->config->instance_address;
1790
1791                 $hostname = $statistics->config->instance_address;
1792         } else {
1793                 if ($statistics->instance_with_ssl)
1794                         $server = "https://";
1795                 else
1796                         $server = "http://";
1797
1798                 $server .= $statistics->instance_address;
1799
1800                 $hostname = $statistics->instance_address;
1801         }
1802
1803         if (is_object($statistics->users))
1804                 foreach ($statistics->users AS $nick => $user) {
1805                         $profile_url = $server."/".$user->nickname;
1806
1807                         $contact = array("url" => $profile_url,
1808                                         "name" => $user->fullname,
1809                                         "addr" => $user->nickname."@".$hostname,
1810                                         "nick" => $user->nickname,
1811                                         "about" => $user->bio,
1812                                         "network" => NETWORK_OSTATUS,
1813                                         "photo" => App::get_baseurl()."/images/person-175.jpg");
1814                         get_gcontact_id($contact);
1815                 }
1816 }
1817
1818 /**
1819  * @brief Asking GNU Social server on a regular base for their user data
1820  *
1821  */
1822 function gs_discover() {
1823
1824         $requery_days = intval(get_config("system", "poco_requery_days"));
1825
1826         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1827
1828         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1829                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1830
1831         if (!$r)
1832                 return;
1833
1834         foreach ($r AS $server) {
1835                 gs_fetch_users($server["url"]);
1836                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1837         }
1838 }
1839 ?>