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