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