include/socgraph.php

   1 <?php
   2 /**
   3  * @file include/socgraph.php
   4  *
   5  * @todo Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
   6  * @todo Fetch profile data from profile page for Redmatrix users
   7  * @todo Detect if it is a forum
   8  */
   9
  10 require_once('include/datetime.php');
  11 require_once("include/Scrape.php");
  12 require_once("include/network.php");
  13 require_once("include/html2bbcode.php");
  14 require_once("include/Contact.php");
  15 require_once("include/Photo.php");
  16
  17 /*
  18  * poco_load
  19  *
  20  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  21  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  22  * if anything (name or photo) has changed.
  23  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  24  *
  25  * Once the global contact is stored add (if necessary) the contact linkage which associates
  26  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  27  * pointing to the same global contact id.
  28  *
  29  */
  30
  31
  32
  33
  34 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  35
  36         $a = get_app();
  37
  38         if($cid) {
  39                 if((! $url) || (! $uid)) {
  40                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  41                                 intval($cid)
  42                         );
  43                         if (dbm::is_result($r)) {
  44                                 $url = $r[0]['poco'];
  45                                 $uid = $r[0]['uid'];
  46                         }
  47                 }
  48                 if(! $uid)
  49                         return;
  50         }
  51
  52         if(! $url)
  53                 return;
  54
  55         $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation') ;
  56
  57         logger('poco_load: ' . $url, LOGGER_DEBUG);
  58
  59         $s = fetch_url($url);
  60
  61         logger('poco_load: returns ' . $s, LOGGER_DATA);
  62
  63         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  64
  65         if(($a->get_curl_code() > 299) || (! $s))
  66                 return;
  67
  68         $j = json_decode($s);
  69
  70         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  71
  72         if(! isset($j->entry))
  73                 return;
  74
  75         $total = 0;
  76         foreach($j->entry as $entry) {
  77
  78                 $total ++;
  79                 $profile_url = '';
  80                 $profile_photo = '';
  81                 $connect_url = '';
  82                 $name = '';
  83                 $network = '';
  84                 $updated = '0000-00-00 00:00:00';
  85                 $location = '';
  86                 $about = '';
  87                 $keywords = '';
  88                 $gender = '';
  89                 $contact_type = -1;
  90                 $generation = 0;
  91
  92                 $name = $entry->displayName;
  93
  94                 if (isset($entry->urls)) {
  95                         foreach ($entry->urls as $url) {
  96                                 if ($url->type == 'profile') {
  97                                         $profile_url = $url->value;
  98                                         continue;
  99                                 }
 100                                 if ($url->type == 'webfinger') {
 101                                         $connect_url = str_replace('acct:' , '', $url->value);
 102                                         continue;
 103                                 }
 104                         }
 105                 }
 106                 if (isset($entry->photos)) {
 107                         foreach ($entry->photos as $photo) {
 108                                 if ($photo->type == 'profile') {
 109                                         $profile_photo = $photo->value;
 110                                         continue;
 111                                 }
 112                         }
 113                 }
 114
 115                 if (isset($entry->updated)) {
 116                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 117                 }
 118
 119                 if (isset($entry->network)) {
 120                         $network = $entry->network;
 121                 }
 122
 123                 if (isset($entry->currentLocation)) {
 124                         $location = $entry->currentLocation;
 125                 }
 126
 127                 if (isset($entry->aboutMe)) {
 128                         $about = html2bbcode($entry->aboutMe);
 129                 }
 130
 131                 if (isset($entry->gender)) {
 132                         $gender = $entry->gender;
 133                 }
 134
 135                 if (isset($entry->generation) AND ($entry->generation > 0)) {
 136                         $generation = ++$entry->generation;
 137                 }
 138
 139                 if (isset($entry->tags)) {
 140                         foreach($entry->tags as $tag) {
 141                                 $keywords = implode(", ", $tag);
 142                         }
 143                 }
 144
 145                 if (isset($entry->contactType) AND ($entry->contactType >= 0))
 146                         $contact_type = $entry->contactType;
 147
 148                 // If you query a Friendica server for its profiles, the network has to be Friendica
 149                 /// TODO It could also be a Redmatrix server
 150                 //if ($uid == 0)
 151                 //      $network = NETWORK_DFRN;
 152
 153                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 154
 155                 $gcontact = array("url" => $profile_url, "contact-type" => $contact_type, "generation" => $generation);
 156                 update_gcontact($gcontact);
 157
 158                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 159                 // Deactivated because we now update Friendica contacts in dfrn.php
 160                 //if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 161                 //      q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 162                 //              WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 163                 //              dbesc($location),
 164                 //              dbesc($about),
 165                 //              dbesc($keywords),
 166                 //              dbesc($gender),
 167                 //              dbesc(normalise_link($profile_url)),
 168                 //              dbesc(NETWORK_DFRN));
 169         }
 170         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 171
 172         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 173                 intval($cid),
 174                 intval($uid),
 175                 intval($zcid)
 176         );
 177
 178 }
 179
 180 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 181
 182         // Generation:
 183         //  0: No definition
 184         //  1: Profiles on this server
 185         //  2: Contacts of profiles on this server
 186         //  3: Contacts of contacts of profiles on this server
 187         //  4: ...
 188
 189         $gcid = "";
 190
 191         if ($profile_url == "")
 192                 return $gcid;
 193
 194         $urlparts = parse_url($profile_url);
 195         if (!isset($urlparts["scheme"]))
 196                 return $gcid;
 197
 198         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 199                                                 "identi.ca", "alpha.app.net")))
 200                 return $gcid;
 201
 202         // Don't store the statusnet connector as network
 203         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 204         if ($network == NETWORK_STATUSNET)
 205                 $network = "";
 206
 207         // Assure that there are no parameter fragments in the profile url
 208         if (in_array($network, array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, "")))
 209                 $profile_url = clean_contact_url($profile_url);
 210
 211         $alternate = poco_alternate_ostatus_url($profile_url);
 212
 213         $orig_updated = $updated;
 214
 215         // The global contacts should contain the original picture, not the cached one
 216         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link(App::get_baseurl()."/photo/"))) {
 217                 $profile_photo = "";
 218         }
 219
 220         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 221                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 222         );
 223         if (dbm::is_result($r)) {
 224                 $network = $r[0]["network"];
 225         }
 226
 227         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 228                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 229                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 230                 );
 231                 if (dbm::is_result($r)) {
 232                         $network = $r[0]["network"];
 233                         //$profile_url = $r[0]["url"];
 234                 }
 235         }
 236
 237         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 238                 dbesc(normalise_link($profile_url))
 239         );
 240
 241         if (count($x)) {
 242                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 243                         $network = $x[0]["network"];
 244
 245                 if ($updated == "0000-00-00 00:00:00")
 246                         $updated = $x[0]["updated"];
 247
 248                 $created = $x[0]["created"];
 249                 $server_url = $x[0]["server_url"];
 250                 $nick = $x[0]["nick"];
 251                 $addr = $x[0]["addr"];
 252                 $alias =  $x[0]["alias"];
 253                 $notify =  $x[0]["notify"];
 254         } else {
 255                 $created = "0000-00-00 00:00:00";
 256                 $server_url = "";
 257
 258                 $urlparts = parse_url($profile_url);
 259                 $nick = end(explode("/", $urlparts["path"]));
 260                 $addr = "";
 261                 $alias = "";
 262                 $notify = "";
 263         }
 264
 265         if ((($network == "") OR ($name == "") OR ($addr == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 266                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 267                 $data = probe_url($profile_url);
 268
 269                 $orig_profile = $profile_url;
 270
 271                 $network = $data["network"];
 272                 $name = $data["name"];
 273                 $nick = $data["nick"];
 274                 $addr = $data["addr"];
 275                 $alias = $data["alias"];
 276                 $notify = $data["notify"];
 277                 $profile_url = $data["url"];
 278                 $profile_photo = $data["photo"];
 279                 $server_url = $data["baseurl"];
 280
 281                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 282                         // Delete the old entry - if it exists
 283                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 284                         if ($r) {
 285                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 286                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 287                         }
 288
 289                         // possibly create a new entry
 290                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 291                 }
 292         }
 293
 294         if ($alternate AND ($network == NETWORK_OSTATUS))
 295                 return $gcid;
 296
 297         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 298                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 299                         dbesc($network),
 300                         dbesc(normalise_link($profile_url))
 301                 );
 302         }
 303
 304         if (($name == "") OR ($profile_photo == ""))
 305                 return $gcid;
 306
 307         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 308                 return $gcid;
 309
 310         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 311
 312         poco_check_server($server_url, $network);
 313
 314         $gcontact = array("url" => $profile_url,
 315                         "addr" => $addr,
 316                         "alias" => $alias,
 317                         "name" => $name,
 318                         "network" => $network,
 319                         "photo" => $profile_photo,
 320                         "about" => $about,
 321                         "location" => $location,
 322                         "gender" => $gender,
 323                         "keywords" => $keywords,
 324                         "server_url" => $server_url,
 325                         "connect" => $connect_url,
 326                         "notify" => $notify,
 327                         "updated" => $updated,
 328                         "generation" => $generation);
 329
 330         $gcid = update_gcontact($gcontact);
 331
 332         if(!$gcid)
 333                 return $gcid;
 334
 335         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 336                 intval($cid),
 337                 intval($uid),
 338                 intval($gcid),
 339                 intval($zcid)
 340         );
 341         if (! dbm::is_result($r)) {
 342                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 343                         intval($cid),
 344                         intval($uid),
 345                         intval($gcid),
 346                         intval($zcid),
 347                         dbesc(datetime_convert())
 348                 );
 349         } else {
 350                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 351                         dbesc(datetime_convert()),
 352                         intval($cid),
 353                         intval($uid),
 354                         intval($gcid),
 355                         intval($zcid)
 356                 );
 357         }
 358
 359         return $gcid;
 360 }
 361
 362 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 363
 364         if ($server == "")
 365                 $server = poco_detect_server($profile);
 366
 367         if ($server == "")
 368                 return true;
 369
 370         return poco_check_server($server, $network, $force);
 371 }
 372
 373 function poco_detect_server($profile) {
 374
 375         // Try to detect the server path based upon some known standard paths
 376         $server_url = "";
 377
 378         if ($server_url == "") {
 379                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 380                 if ($friendica != $profile) {
 381                         $server_url = $friendica;
 382                         $network = NETWORK_DFRN;
 383                 }
 384         }
 385
 386         if ($server_url == "") {
 387                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 388                 if ($diaspora != $profile) {
 389                         $server_url = $diaspora;
 390                         $network = NETWORK_DIASPORA;
 391                 }
 392         }
 393
 394         if ($server_url == "") {
 395                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 396                 if ($red != $profile) {
 397                         $server_url = $red;
 398                         $network = NETWORK_DIASPORA;
 399                 }
 400         }
 401
 402         // Mastodon
 403         if ($server_url == "") {
 404                 $red = preg_replace("=(https?://)(.*)/users/(.*)=ism", "$1$2", $profile);
 405                 if ($red != $profile) {
 406                         $server_url = $red;
 407                         $network = NETWORK_OSTATUS;
 408                 }
 409         }
 410
 411         return $server_url;
 412 }
 413
 414 function poco_alternate_ostatus_url($url) {
 415         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 416 }
 417
 418 function poco_last_updated($profile, $force = false) {
 419
 420         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 421                         dbesc(normalise_link($profile)));
 422
 423         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 424                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 425                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 426
 427         if ($gcontacts[0]["server_url"] != "")
 428                 $server_url = $gcontacts[0]["server_url"];
 429         else
 430                 $server_url = poco_detect_server($profile);
 431
 432         if (!in_array($gcontacts[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_FEED, NETWORK_OSTATUS, ""))) {
 433                 logger("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", LOGGER_DEBUG);
 434                 return false;
 435         }
 436
 437         if ($server_url != "") {
 438                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 439
 440                         if ($force)
 441                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 442                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 443
 444                         logger("Profile ".$profile.": Server ".$server_url." wasn't reachable.", LOGGER_DEBUG);
 445                         return false;
 446                 }
 447
 448                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 449                         dbesc($server_url), dbesc(normalise_link($profile)));
 450         }
 451
 452         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 453                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 454                         dbesc(normalise_link($server_url)));
 455
 456                 if ($server)
 457                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 458                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 459                 else
 460                         return false;
 461         }
 462
 463         // noscrape is really fast so we don't cache the call.
 464         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 465
 466                 //  Use noscrape if possible
 467                 $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 468
 469                 if ($server) {
 470                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 471
 472                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 473
 474                                 $noscrape = json_decode($noscraperet["body"], true);
 475
 476                                 if (is_array($noscrape)) {
 477                                         $contact = array("url" => $profile,
 478                                                         "network" => $server[0]["network"],
 479                                                         "generation" => $gcontacts[0]["generation"]);
 480
 481                                         if (isset($noscrape["fn"]))
 482                                                 $contact["name"] = $noscrape["fn"];
 483
 484                                         if (isset($noscrape["comm"]))
 485                                                 $contact["community"] = $noscrape["comm"];
 486
 487                                         if (isset($noscrape["tags"])) {
 488                                                 $keywords = implode(" ", $noscrape["tags"]);
 489                                                 if ($keywords != "")
 490                                                         $contact["keywords"] = $keywords;
 491                                         }
 492
 493                                         $location = formatted_location($noscrape);
 494                                         if ($location)
 495                                                 $contact["location"] = $location;
 496
 497                                         if (isset($noscrape["dfrn-notify"]))
 498                                                 $contact["notify"] = $noscrape["dfrn-notify"];
 499
 500                                         // Remove all fields that are not present in the gcontact table
 501                                         unset($noscrape["fn"]);
 502                                         unset($noscrape["key"]);
 503                                         unset($noscrape["homepage"]);
 504                                         unset($noscrape["comm"]);
 505                                         unset($noscrape["tags"]);
 506                                         unset($noscrape["locality"]);
 507                                         unset($noscrape["region"]);
 508                                         unset($noscrape["country-name"]);
 509                                         unset($noscrape["contacts"]);
 510                                         unset($noscrape["dfrn-request"]);
 511                                         unset($noscrape["dfrn-confirm"]);
 512                                         unset($noscrape["dfrn-notify"]);
 513                                         unset($noscrape["dfrn-poll"]);
 514
 515                                         // Set the date of the last contact
 516                                         /// @todo By now the function "update_gcontact" doesn't work with this field
 517                                         //$contact["last_contact"] = datetime_convert();
 518
 519                                         $contact = array_merge($contact, $noscrape);
 520
 521                                         update_gcontact($contact);
 522
 523                                         if (trim($noscrape["updated"]) != "") {
 524                                                 q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 525                                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 526
 527                                                 logger("Profile ".$profile." was last updated at ".$noscrape["updated"]." (noscrape)", LOGGER_DEBUG);
 528
 529                                                 return $noscrape["updated"];
 530                                         }
 531                                 }
 532                         }
 533                 }
 534         }
 535
 536         // If we only can poll the feed, then we only do this once a while
 537         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"])) {
 538                 logger("Profile ".$profile." was last updated at ".$gcontacts[0]["updated"]." (cached)", LOGGER_DEBUG);
 539                 return $gcontacts[0]["updated"];
 540         }
 541
 542         $data = probe_url($profile);
 543
 544         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 545         // Then check the other link and delete this one
 546         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 547                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 548                 (normalise_link($profile) != normalise_link($data["url"]))) {
 549
 550                 // Delete the old entry
 551                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 552                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 553
 554                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 555                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 556
 557                 poco_last_updated($data["url"], $force);
 558
 559                 logger("Profile ".$profile." was deleted", LOGGER_DEBUG);
 560                 return false;
 561         }
 562
 563         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 564                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 565                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 566
 567                 logger("Profile ".$profile." wasn't reachable (profile)", LOGGER_DEBUG);
 568                 return false;
 569         }
 570
 571         $contact = array("generation" => $gcontacts[0]["generation"]);
 572
 573         $contact = array_merge($contact, $data);
 574
 575         $contact["server_url"] = $data["baseurl"];
 576
 577         unset($contact["batch"]);
 578         unset($contact["poll"]);
 579         unset($contact["request"]);
 580         unset($contact["confirm"]);
 581         unset($contact["poco"]);
 582         unset($contact["priority"]);
 583         unset($contact["pubkey"]);
 584         unset($contact["baseurl"]);
 585
 586         update_gcontact($contact);
 587
 588         $feedret = z_fetch_url($data["poll"]);
 589
 590         if (!$feedret["success"]) {
 591                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 592                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 593
 594                 logger("Profile ".$profile." wasn't reachable (no feed)", LOGGER_DEBUG);
 595                 return false;
 596         }
 597
 598         $doc = new DOMDocument();
 599         @$doc->loadXML($feedret["body"]);
 600
 601         $xpath = new DomXPath($doc);
 602         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 603
 604         $entries = $xpath->query('/atom:feed/atom:entry');
 605
 606         $last_updated = "";
 607
 608         foreach ($entries AS $entry) {
 609                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 610                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 611
 612                 if ($last_updated < $published)
 613                         $last_updated = $published;
 614
 615                 if ($last_updated < $updated)
 616                         $last_updated = $updated;
 617         }
 618
 619         // Maybe there aren't any entries. Then check if it is a valid feed
 620         if ($last_updated == "")
 621                 if ($xpath->query('/atom:feed')->length > 0)
 622                         $last_updated = "0000-00-00 00:00:00";
 623
 624         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 625                 dbesc(dbm::date($last_updated)), dbesc(dbm::date()), dbesc(normalise_link($profile)));
 626
 627         if (($gcontacts[0]["generation"] == 0))
 628                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 629                         dbesc(normalise_link($profile)));
 630
 631         logger("Profile ".$profile." was last updated at ".$last_updated, LOGGER_DEBUG);
 632
 633         return($last_updated);
 634 }
 635
 636 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 637         $now = strtotime(datetime_convert());
 638
 639         if ($updated > $last_contact)
 640                 $contact_time = strtotime($updated);
 641         else
 642                 $contact_time = strtotime($last_contact);
 643
 644         $failure_time = strtotime($last_failure);
 645         $created_time = strtotime($created);
 646
 647         // If there is no "created" time then use the current time
 648         if ($created_time <= 0)
 649                 $created_time = $now;
 650
 651         // If the last contact was less than 24 hours then don't update
 652         if (($now - $contact_time) < (60 * 60 * 24))
 653                 return false;
 654
 655         // If the last failure was less than 24 hours then don't update
 656         if (($now - $failure_time) < (60 * 60 * 24))
 657                 return false;
 658
 659         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 660         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 661         //      return false;
 662
 663         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 664         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 665                 return false;
 666
 667         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 668         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 669                 return false;
 670
 671         return true;
 672 }
 673
 674 function poco_to_boolean($val) {
 675         if (($val == "true") OR ($val == 1))
 676                 return(true);
 677         if (($val == "false") OR ($val == 0))
 678                 return(false);
 679
 680         return ($val);
 681 }
 682
 683 function poco_check_server($server_url, $network = "", $force = false) {
 684
 685         // Unify the server address
 686         $server_url = trim($server_url, "/");
 687         $server_url = str_replace("/index.php", "", $server_url);
 688
 689         if ($server_url == "")
 690                 return false;
 691
 692         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 693         if (dbm::is_result($servers)) {
 694
 695                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 696                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 697                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 698
 699                 $poco = $servers[0]["poco"];
 700                 $noscrape = $servers[0]["noscrape"];
 701
 702                 if ($network == "")
 703                         $network = $servers[0]["network"];
 704
 705                 $last_contact = $servers[0]["last_contact"];
 706                 $last_failure = $servers[0]["last_failure"];
 707                 $version = $servers[0]["version"];
 708                 $platform = $servers[0]["platform"];
 709                 $site_name = $servers[0]["site_name"];
 710                 $info = $servers[0]["info"];
 711                 $register_policy = $servers[0]["register_policy"];
 712
 713                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 714                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 715                         return ($last_contact >= $last_failure);
 716                 }
 717         } else {
 718                 $poco = "";
 719                 $noscrape = "";
 720                 $version = "";
 721                 $platform = "";
 722                 $site_name = "";
 723                 $info = "";
 724                 $register_policy = -1;
 725
 726                 $last_contact = "0000-00-00 00:00:00";
 727                 $last_failure = "0000-00-00 00:00:00";
 728         }
 729         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 730
 731         $failure = false;
 732         $orig_last_failure = $last_failure;
 733
 734         // Check if the page is accessible via SSL.
 735         $orig_server_url = $server_url;
 736         $server_url = str_replace("http://", "https://", $server_url);
 737
 738         // We set the timeout to 20 seconds since this operation should be done in no time if the server was vital
 739         $serverret = z_fetch_url($server_url."/.well-known/host-meta", false, $redirects, array('timeout' => 20));
 740
 741         // Quit if there is a timeout.
 742         // But we want to make sure to only quit if we are mostly sure that this server url fits.
 743         if (dbm::is_result($servers) AND ($orig_server_url == $server_url) AND
 744                 ($serverret['errno'] == CURLE_OPERATION_TIMEDOUT)) {
 745                 logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG);
 746                 return false;
 747         }
 748
 749         // Maybe the page is unencrypted only?
 750         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 751         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 752                 $server_url = str_replace("https://", "http://", $server_url);
 753
 754                 // We set the timeout to 20 seconds since this operation should be done in no time if the server was vital
 755                 $serverret = z_fetch_url($server_url."/.well-known/host-meta", false, $redirects, array('timeout' => 20));
 756
 757                 // Quit if there is a timeout
 758                 if ($serverret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 759                         logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG);
 760                         return false;
 761                 }
 762
 763                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 764         }
 765
 766         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 767                 // Workaround for bad configured servers (known nginx problem)
 768                 if (!in_array($serverret["debug"]["http_code"], array("403", "404"))) {
 769                         $last_failure = datetime_convert();
 770                         $failure = true;
 771                 }
 772         } elseif ($network == NETWORK_DIASPORA)
 773                 $last_contact = datetime_convert();
 774
 775         if (!$failure) {
 776                 // Test for Diaspora
 777                 $serverret = z_fetch_url($server_url);
 778
 779                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 780                         $failure = true;
 781                 else {
 782                         $lines = explode("\n",$serverret["header"]);
 783                         if(count($lines))
 784                                 foreach($lines as $line) {
 785                                         $line = trim($line);
 786                                         if(stristr($line,'X-Diaspora-Version:')) {
 787                                                 $platform = "Diaspora";
 788                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 789                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 790                                                 $network = NETWORK_DIASPORA;
 791                                                 $versionparts = explode("-", $version);
 792                                                 $version = $versionparts[0];
 793                                         }
 794
 795                                         if(stristr($line,'Server: Mastodon')) {
 796                                                 $platform = "Mastodon";
 797                                                 $network = NETWORK_OSTATUS;
 798                                                 // Mastodon doesn't reveal version numbers
 799                                                 $version = "";
 800                                         }
 801                                 }
 802                 }
 803         }
 804
 805         if (!$failure) {
 806                 // Test for Statusnet
 807                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 808                 // The "not implemented" is a special treatment for really, really old Friendica versions
 809                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 810                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 811                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 812                         $platform = "StatusNet";
 813                         $version = trim($serverret["body"], '"');
 814                         $network = NETWORK_OSTATUS;
 815                 }
 816
 817                 // Test for GNU Social
 818                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 819                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 820                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 821                         $platform = "GNU Social";
 822                         $version = trim($serverret["body"], '"');
 823                         $network = NETWORK_OSTATUS;
 824                 }
 825
 826                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 827                 if ($serverret["success"]) {
 828                         $data = json_decode($serverret["body"]);
 829
 830                         if (isset($data->site->server)) {
 831                                 $last_contact = datetime_convert();
 832
 833                                 if (isset($data->site->hubzilla)) {
 834                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 835                                         $version = $data->site->hubzilla->RED_VERSION;
 836                                         $network = NETWORK_DIASPORA;
 837                                 }
 838                                 if (isset($data->site->redmatrix)) {
 839                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 840                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 841                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 842                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 843
 844                                         $version = $data->site->redmatrix->RED_VERSION;
 845                                         $network = NETWORK_DIASPORA;
 846                                 }
 847                                 if (isset($data->site->friendica)) {
 848                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 849                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 850                                         $network = NETWORK_DFRN;
 851                                 }
 852
 853                                 $site_name = $data->site->name;
 854
 855                                 $data->site->closed = poco_to_boolean($data->site->closed);
 856                                 $data->site->private = poco_to_boolean($data->site->private);
 857                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 858
 859                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 860                                         $register_policy = REGISTER_APPROVE;
 861                                 elseif (!$data->site->closed AND !$data->site->private)
 862                                         $register_policy = REGISTER_OPEN;
 863                                 else
 864                                         $register_policy = REGISTER_CLOSED;
 865                         }
 866                 }
 867         }
 868
 869         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 870         if (!$failure) {
 871                 $serverret = z_fetch_url($server_url."/statistics.json");
 872                 if ($serverret["success"]) {
 873                         $data = json_decode($serverret["body"]);
 874                         if ($version == "")
 875                                 $version = $data->version;
 876
 877                         $site_name = $data->name;
 878
 879                         if (isset($data->network) AND ($platform == ""))
 880                                 $platform = $data->network;
 881
 882                         if ($platform == "Diaspora")
 883                                 $network = NETWORK_DIASPORA;
 884
 885                         if ($data->registrations_open)
 886                                 $register_policy = REGISTER_OPEN;
 887                         else
 888                                 $register_policy = REGISTER_CLOSED;
 889
 890                         if (isset($data->version))
 891                                 $last_contact = datetime_convert();
 892                 }
 893         }
 894
 895         // Check for noscrape
 896         // Friendica servers could be detected as OStatus servers
 897         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 898                 $serverret = z_fetch_url($server_url."/friendica/json");
 899
 900                 if (!$serverret["success"])
 901                         $serverret = z_fetch_url($server_url."/friendika/json");
 902
 903                 if ($serverret["success"]) {
 904                         $data = json_decode($serverret["body"]);
 905
 906                         if (isset($data->version)) {
 907                                 $last_contact = datetime_convert();
 908                                 $network = NETWORK_DFRN;
 909
 910                                 $noscrape = $data->no_scrape_url;
 911                                 $version = $data->version;
 912                                 $site_name = $data->site_name;
 913                                 $info = $data->info;
 914                                 $register_policy_str = $data->register_policy;
 915                                 $platform = $data->platform;
 916
 917                                 switch ($register_policy_str) {
 918                                         case "REGISTER_CLOSED":
 919                                                 $register_policy = REGISTER_CLOSED;
 920                                                 break;
 921                                         case "REGISTER_APPROVE":
 922                                                 $register_policy = REGISTER_APPROVE;
 923                                                 break;
 924                                         case "REGISTER_OPEN":
 925                                                 $register_policy = REGISTER_OPEN;
 926                                                 break;
 927                                 }
 928                         }
 929                 }
 930         }
 931
 932         // Look for poco
 933         if (!$failure) {
 934                 $serverret = z_fetch_url($server_url."/poco");
 935                 if ($serverret["success"]) {
 936                         $data = json_decode($serverret["body"]);
 937                         if (isset($data->totalResults)) {
 938                                 $poco = $server_url."/poco";
 939                                 $last_contact = datetime_convert();
 940                         }
 941                 }
 942         }
 943
 944         // Check again if the server exists
 945         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 946
 947         $version = strip_tags($version);
 948         $site_name = strip_tags($site_name);
 949         $info = strip_tags($info);
 950         $platform = strip_tags($platform);
 951
 952         if ($servers)
 953                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 954                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 955                         dbesc($server_url),
 956                         dbesc($version),
 957                         dbesc($site_name),
 958                         dbesc($info),
 959                         intval($register_policy),
 960                         dbesc($poco),
 961                         dbesc($noscrape),
 962                         dbesc($network),
 963                         dbesc($platform),
 964                         dbesc($last_contact),
 965                         dbesc($last_failure),
 966                         dbesc(normalise_link($server_url))
 967                 );
 968         else
 969                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 970                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 971                                 dbesc($server_url),
 972                                 dbesc(normalise_link($server_url)),
 973                                 dbesc($version),
 974                                 dbesc($site_name),
 975                                 dbesc($info),
 976                                 intval($register_policy),
 977                                 dbesc($poco),
 978                                 dbesc($noscrape),
 979                                 dbesc($network),
 980                                 dbesc($platform),
 981                                 dbesc(datetime_convert()),
 982                                 dbesc($last_contact),
 983                                 dbesc($last_failure),
 984                                 dbesc(datetime_convert())
 985                 );
 986
 987         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 988
 989         return !$failure;
 990 }
 991
 992 function count_common_friends($uid,$cid) {
 993
 994         $r = q("SELECT count(*) as `total`
 995                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 996                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 997                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 998                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 999                 intval($cid),
1000                 intval($uid),
1001                 intval($uid),
1002                 intval($cid)
1003         );
1004
1005 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1006         if (dbm::is_result($r))
1007                 return $r[0]['total'];
1008         return 0;
1009
1010 }
1011
1012
1013 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1014
1015         if($shuffle)
1016                 $sql_extra = " order by rand() ";
1017         else
1018                 $sql_extra = " order by `gcontact`.`name` asc ";
1019
1020         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1021                 FROM `glink`
1022                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
1023                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
1024                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
1025                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
1026                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
1027                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1028                         $sql_extra LIMIT %d, %d",
1029                 intval($cid),
1030                 intval($uid),
1031                 intval($uid),
1032                 intval($cid),
1033                 intval($start),
1034                 intval($limit)
1035         );
1036
1037         return $r;
1038
1039 }
1040
1041
1042 function count_common_friends_zcid($uid,$zcid) {
1043
1044         $r = q("SELECT count(*) as `total`
1045                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1046                 where `glink`.`zcid` = %d
1047                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1048                 intval($zcid),
1049                 intval($uid)
1050         );
1051
1052         if (dbm::is_result($r))
1053                 return $r[0]['total'];
1054         return 0;
1055
1056 }
1057
1058 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1059
1060         if($shuffle)
1061                 $sql_extra = " order by rand() ";
1062         else
1063                 $sql_extra = " order by `gcontact`.`name` asc ";
1064
1065         $r = q("SELECT `gcontact`.*
1066                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1067                 where `glink`.`zcid` = %d
1068                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1069                 $sql_extra limit %d, %d",
1070                 intval($zcid),
1071                 intval($uid),
1072                 intval($start),
1073                 intval($limit)
1074         );
1075
1076         return $r;
1077
1078 }
1079
1080
1081 function count_all_friends($uid,$cid) {
1082
1083         $r = q("SELECT count(*) as `total`
1084                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1085                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1086                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1087                 intval($cid),
1088                 intval($uid)
1089         );
1090
1091         if (dbm::is_result($r))
1092                 return $r[0]['total'];
1093         return 0;
1094
1095 }
1096
1097
1098 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1099
1100         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1101                 FROM `glink`
1102                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1103                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1104                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1105                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1106                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1107                 intval($uid),
1108                 intval($cid),
1109                 intval($uid),
1110                 intval($start),
1111                 intval($limit)
1112         );
1113
1114         return $r;
1115 }
1116
1117
1118
1119 function suggestion_query($uid, $start = 0, $limit = 80) {
1120
1121         if (!$uid) {
1122                 return array();
1123         }
1124
1125 // Uncommented because the result of the queries are to big to store it in the cache.
1126 // We need to decide if we want to change the db column type or if we want to delete it.
1127 //      $list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
1128 //      if (!is_null($list)) {
1129 //              return $list;
1130 //      }
1131
1132         $network = array(NETWORK_DFRN);
1133
1134         if (get_config('system','diaspora_enabled'))
1135                 $network[] = NETWORK_DIASPORA;
1136
1137         if (!get_config('system','ostatus_disabled'))
1138                 $network[] = NETWORK_OSTATUS;
1139
1140         $sql_network = implode("', '", $network);
1141         $sql_network = "'".$sql_network."'";
1142
1143         /// @todo This query is really slow
1144         // By now we cache the data for five minutes
1145         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1146                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1147                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1148                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1149                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1150                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1151                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1152                 AND `gcontact`.`network` IN (%s)
1153                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1154                 intval($uid),
1155                 intval($uid),
1156                 intval($uid),
1157                 intval($uid),
1158                 $sql_network,
1159                 intval($start),
1160                 intval($limit)
1161         );
1162
1163         if (dbm::is_result($r) && count($r) >= ($limit -1)) {
1164 // Uncommented because the result of the queries are to big to store it in the cache.
1165 // We need to decide if we want to change the db column type or if we want to delete it.
1166 //              Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
1167
1168                 return $r;
1169         }
1170
1171         $r2 = q("SELECT gcontact.* FROM gcontact
1172                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1173                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1174                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1175                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1176                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1177                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1178                 AND `gcontact`.`network` IN (%s)
1179                 ORDER BY rand() LIMIT %d, %d",
1180                 intval($uid),
1181                 intval($uid),
1182                 intval($uid),
1183                 $sql_network,
1184                 intval($start),
1185                 intval($limit)
1186         );
1187
1188         $list = array();
1189         foreach ($r2 AS $suggestion)
1190                 $list[$suggestion["nurl"]] = $suggestion;
1191
1192         foreach ($r AS $suggestion)
1193                 $list[$suggestion["nurl"]] = $suggestion;
1194
1195         while (sizeof($list) > ($limit))
1196                 array_pop($list);
1197
1198 // Uncommented because the result of the queries are to big to store it in the cache.
1199 // We need to decide if we want to change the db column type or if we want to delete it.
1200 //      Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
1201         return $list;
1202 }
1203
1204 function update_suggestions() {
1205
1206         $a = get_app();
1207
1208         $done = array();
1209
1210         /// @TODO Check if it is really neccessary to poll the own server
1211         poco_load(0,0,0,App::get_baseurl() . '/poco');
1212
1213         $done[] = App::get_baseurl() . '/poco';
1214
1215         if (strlen(get_config('system','directory'))) {
1216                 $x = fetch_url(get_server()."/pubsites");
1217                 if ($x) {
1218                         $j = json_decode($x);
1219                         if ($j->entries) {
1220                                 foreach ($j->entries as $entry) {
1221
1222                                         poco_check_server($entry->url);
1223
1224                                         $url = $entry->url . '/poco';
1225                                         if (! in_array($url,$done)) {
1226                                                 poco_load(0,0,0,$entry->url . '/poco');
1227                                         }
1228                                 }
1229                         }
1230                 }
1231         }
1232
1233         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1234         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1235                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1236         );
1237
1238         if (dbm::is_result($r)) {
1239                 foreach ($r as $rr) {
1240                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1241                         if(! in_array($base,$done))
1242                                 poco_load(0,0,0,$base);
1243                 }
1244         }
1245 }
1246
1247 function poco_discover_federation() {
1248         $last = get_config('poco','last_federation_discovery');
1249
1250         if ($last) {
1251                 $next = $last + (24 * 60 * 60);
1252                 if($next > time())
1253                         return;
1254         }
1255
1256         // Discover Friendica, Hubzilla and Diaspora servers
1257         $serverdata = fetch_url("http://the-federation.info/pods.json");
1258
1259         if ($serverdata) {
1260                 $servers = json_decode($serverdata);
1261
1262                 foreach($servers->pods AS $server)
1263                         poco_check_server("https://".$server->host);
1264         }
1265
1266         // Currently disabled, since the service isn't available anymore.
1267         // It is not removed since I hope that there will be a successor.
1268         // Discover GNU Social Servers.
1269         //if (!get_config('system','ostatus_disabled')) {
1270         //      $serverdata = "http://gstools.org/api/get_open_instances/";
1271
1272         //      $result = z_fetch_url($serverdata);
1273         //      if ($result["success"]) {
1274         //              $servers = json_decode($result["body"]);
1275
1276         //              foreach($servers->data AS $server)
1277         //                      poco_check_server($server->instance_address);
1278         //      }
1279         //}
1280
1281         set_config('poco','last_federation_discovery', time());
1282 }
1283
1284 function poco_discover($complete = false) {
1285
1286         // Update the server list
1287         poco_discover_federation();
1288
1289         $no_of_queries = 5;
1290
1291         $requery_days = intval(get_config("system", "poco_requery_days"));
1292
1293         if ($requery_days == 0)
1294                 $requery_days = 7;
1295
1296         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1297
1298         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1299         if ($r)
1300                 foreach ($r AS $server) {
1301
1302                         if (!poco_check_server($server["url"], $server["network"])) {
1303                                 // The server is not reachable? Okay, then we will try it later
1304                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1305                                 continue;
1306                         }
1307
1308                         // Fetch all users from the other server
1309                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1310
1311                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1312
1313                         $retdata = z_fetch_url($url);
1314                         if ($retdata["success"]) {
1315                                 $data = json_decode($retdata["body"]);
1316
1317                                 poco_discover_server($data, 2);
1318
1319                                 if (get_config('system','poco_discovery') > 1) {
1320
1321                                         $timeframe = get_config('system','poco_discovery_since');
1322                                         if ($timeframe == 0)
1323                                                 $timeframe = 30;
1324
1325                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1326
1327                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1328                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1329
1330                                         $success = false;
1331
1332                                         $retdata = z_fetch_url($url);
1333                                         if ($retdata["success"]) {
1334                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1335                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1336                                         }
1337
1338                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1339                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1340                                                 poco_discover_server_users($data, $server);
1341                                         }
1342                                 }
1343
1344                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1345                                 if (!$complete AND (--$no_of_queries == 0))
1346                                         break;
1347                         } else {
1348                                 // If the server hadn't replied correctly, then force a sanity check
1349                                 poco_check_server($server["url"], $server["network"], true);
1350
1351                                 // If we couldn't reach the server, we will try it some time later
1352                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1353                         }
1354                 }
1355 }
1356
1357 function poco_discover_server_users($data, $server) {
1358
1359         if (!isset($data->entry))
1360                 return;
1361
1362         foreach ($data->entry AS $entry) {
1363                 $username = "";
1364                 if (isset($entry->urls)) {
1365                         foreach($entry->urls as $url)
1366                                 if ($url->type == 'profile') {
1367                                         $profile_url = $url->value;
1368                                         $urlparts = parse_url($profile_url);
1369                                         $username = end(explode("/", $urlparts["path"]));
1370                                 }
1371                 }
1372                 if ($username != "") {
1373                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1374
1375                         // Fetch all contacts from a given user from the other server
1376                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
1377
1378                         $retdata = z_fetch_url($url);
1379                         if ($retdata["success"])
1380                                 poco_discover_server(json_decode($retdata["body"]), 3);
1381                 }
1382         }
1383 }
1384
1385 function poco_discover_server($data, $default_generation = 0) {
1386
1387         if (!isset($data->entry) OR !count($data->entry))
1388                 return false;
1389
1390         $success = false;
1391
1392         foreach ($data->entry AS $entry) {
1393                 $profile_url = '';
1394                 $profile_photo = '';
1395                 $connect_url = '';
1396                 $name = '';
1397                 $network = '';
1398                 $updated = '0000-00-00 00:00:00';
1399                 $location = '';
1400                 $about = '';
1401                 $keywords = '';
1402                 $gender = '';
1403                 $contact_type = -1;
1404                 $generation = $default_generation;
1405
1406                 $name = $entry->displayName;
1407
1408                 if (isset($entry->urls)) {
1409                         foreach($entry->urls as $url) {
1410                                 if ($url->type == 'profile') {
1411                                         $profile_url = $url->value;
1412                                         continue;
1413                                 }
1414                                 if ($url->type == 'webfinger') {
1415                                         $connect_url = str_replace('acct:' , '', $url->value);
1416                                         continue;
1417                                 }
1418                         }
1419                 }
1420
1421                 if (isset($entry->photos)) {
1422                         foreach ($entry->photos as $photo) {
1423                                 if ($photo->type == 'profile') {
1424                                         $profile_photo = $photo->value;
1425                                         continue;
1426                                 }
1427                         }
1428                 }
1429
1430                 if (isset($entry->updated)) {
1431                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1432                 }
1433
1434                 if(isset($entry->network)) {
1435                         $network = $entry->network;
1436                 }
1437
1438                 if(isset($entry->currentLocation)) {
1439                         $location = $entry->currentLocation;
1440                 }
1441
1442                 if(isset($entry->aboutMe)) {
1443                         $about = html2bbcode($entry->aboutMe);
1444                 }
1445
1446                 if(isset($entry->gender)) {
1447                         $gender = $entry->gender;
1448                 }
1449
1450                 if(isset($entry->generation) AND ($entry->generation > 0)) {
1451                         $generation = ++$entry->generation;
1452                 }
1453
1454                 if(isset($entry->contactType) AND ($entry->contactType >= 0)) {
1455                         $contact_type = $entry->contactType;
1456                 }
1457
1458                 if(isset($entry->tags)) {
1459                         foreach ($entry->tags as $tag) {
1460                                 $keywords = implode(", ", $tag);
1461                         }
1462                 }
1463
1464                 if ($generation > 0) {
1465                         $success = true;
1466
1467                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1468                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1469
1470                         $gcontact = array("url" => $profile_url, "contact-type" => $contact_type, "generation" => $generation);
1471                         update_gcontact($gcontact);
1472
1473                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1474                 }
1475         }
1476         return $success;
1477 }
1478
1479 /**
1480  * @brief Removes unwanted parts from a contact url
1481  *
1482  * @param string $url Contact url
1483  * @return string Contact url with the wanted parts
1484  */
1485 function clean_contact_url($url) {
1486         $parts = parse_url($url);
1487
1488         if (!isset($parts["scheme"]) OR !isset($parts["host"]))
1489                 return $url;
1490
1491         $new_url = $parts["scheme"]."://".$parts["host"];
1492
1493         if (isset($parts["port"]))
1494                 $new_url .= ":".$parts["port"];
1495
1496         if (isset($parts["path"]))
1497                 $new_url .= $parts["path"];
1498
1499         if ($new_url != $url)
1500                 logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".App::callstack(), LOGGER_DEBUG);
1501
1502         return $new_url;
1503 }
1504
1505 /**
1506  * @brief Replace alternate OStatus user format with the primary one
1507  *
1508  * @param arr $contact contact array (called by reference)
1509  */
1510 function fix_alternate_contact_address(&$contact) {
1511         if (($contact["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($contact["url"])) {
1512                 $data = probe_url($contact["url"]);
1513                 if ($contact["network"] == NETWORK_OSTATUS) {
1514                         logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1515                         $contact["url"] = $data["url"];
1516                         $contact["addr"] = $data["addr"];
1517                         $contact["alias"] = $data["alias"];
1518                         $contact["server_url"] = $data["baseurl"];
1519                 }
1520         }
1521 }
1522
1523 /**
1524  * @brief Fetch the gcontact id, add an entry if not existed
1525  *
1526  * @param arr $contact contact array
1527  * @return bool|int Returns false if not found, integer if contact was found
1528  */
1529 function get_gcontact_id($contact) {
1530
1531         $gcontact_id = 0;
1532         $doprobing = false;
1533
1534         if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
1535                 logger("Invalid network for contact url ".$contact["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1536                 return false;
1537         }
1538
1539         if ($contact["network"] == NETWORK_STATUSNET)
1540                 $contact["network"] = NETWORK_OSTATUS;
1541
1542         // All new contacts are hidden by default
1543         if (!isset($contact["hide"]))
1544                 $contact["hide"] = true;
1545
1546         // Replace alternate OStatus user format with the primary one
1547         fix_alternate_contact_address($contact);
1548
1549         // Remove unwanted parts from the contact url (e.g. "?zrl=...")
1550         if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS)))
1551                 $contact["url"] = clean_contact_url($contact["url"]);
1552
1553         $r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 2",
1554                 dbesc(normalise_link($contact["url"])));
1555
1556         if ($r) {
1557                 $gcontact_id = $r[0]["id"];
1558
1559                 // Update every 90 days
1560                 if (in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
1561                         $last_failure_str = $r[0]["last_failure"];
1562                         $last_failure = strtotime($r[0]["last_failure"]);
1563                         $last_contact_str = $r[0]["last_contact"];
1564                         $last_contact = strtotime($r[0]["last_contact"]);
1565                         $doprobing = (((time() - $last_contact) > (90 * 86400)) AND ((time() - $last_failure) > (90 * 86400)));
1566                 }
1567         } else {
1568                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
1569                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
1570                         dbesc($contact["name"]),
1571                         dbesc($contact["nick"]),
1572                         dbesc($contact["addr"]),
1573                         dbesc($contact["network"]),
1574                         dbesc($contact["url"]),
1575                         dbesc(normalise_link($contact["url"])),
1576                         dbesc($contact["photo"]),
1577                         dbesc(datetime_convert()),
1578                         dbesc(datetime_convert()),
1579                         dbesc($contact["location"]),
1580                         dbesc($contact["about"]),
1581                         intval($contact["hide"]),
1582                         intval($contact["generation"])
1583                 );
1584
1585                 $r = q("SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1586                         dbesc(normalise_link($contact["url"])));
1587
1588                 if ($r) {
1589                         $gcontact_id = $r[0]["id"];
1590
1591                         $doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
1592                 }
1593         }
1594
1595         if ($doprobing) {
1596                 logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
1597                 proc_run(PRIORITY_LOW, 'include/gprobe.php', bin2hex($contact["url"]));
1598         }
1599
1600         if ((dbm::is_result($r)) AND (count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1601          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1602                 dbesc(normalise_link($contact["url"])),
1603                 intval($gcontact_id));
1604
1605         return $gcontact_id;
1606 }
1607
1608 /**
1609  * @brief Updates the gcontact table from a given array
1610  *
1611  * @param arr $contact contact array
1612  * @return bool|int Returns false if not found, integer if contact was found
1613  */
1614 function update_gcontact($contact) {
1615
1616         // Check for invalid "contact-type" value
1617         if (isset($contact['contact-type']) AND (intval($contact['contact-type']) < 0)) {
1618                 $contact['contact-type'] = 0;
1619         }
1620
1621         /// @todo update contact table as well
1622
1623         $gcontact_id = get_gcontact_id($contact);
1624
1625         if (!$gcontact_id)
1626                 return false;
1627
1628         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1629                         `contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1630                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1631                 intval($gcontact_id));
1632
1633         // Get all field names
1634         $fields = array();
1635         foreach ($r[0] AS $field => $data)
1636                 $fields[$field] = $data;
1637
1638         unset($fields["url"]);
1639         unset($fields["updated"]);
1640         unset($fields["hide"]);
1641
1642         // Bugfix: We had an error in the storing of keywords which lead to the "0"
1643         // This value is still transmitted via poco.
1644         if ($contact["keywords"] == "0")
1645                 unset($contact["keywords"]);
1646
1647         if ($r[0]["keywords"] == "0")
1648                 $r[0]["keywords"] = "";
1649
1650         // assign all unassigned fields from the database entry
1651         foreach ($fields AS $field => $data)
1652                 if (!isset($contact[$field]) OR ($contact[$field] == ""))
1653                         $contact[$field] = $r[0][$field];
1654
1655         if (!isset($contact["hide"]))
1656                 $contact["hide"] = $r[0]["hide"];
1657
1658         $fields["hide"] = $r[0]["hide"];
1659
1660         if ($contact["network"] == NETWORK_STATUSNET)
1661                 $contact["network"] = NETWORK_OSTATUS;
1662
1663         // Replace alternate OStatus user format with the primary one
1664         fix_alternate_contact_address($contact);
1665
1666         if (!isset($contact["updated"]))
1667                 $contact["updated"] = datetime_convert();
1668
1669         if ($contact["server_url"] == "") {
1670                 $server_url = $contact["url"];
1671
1672                 $server_url = matching_url($server_url, $contact["alias"]);
1673                 if ($server_url != "")
1674                         $contact["server_url"] = $server_url;
1675
1676                 $server_url = matching_url($server_url, $contact["photo"]);
1677                 if ($server_url != "")
1678                         $contact["server_url"] = $server_url;
1679
1680                 $server_url = matching_url($server_url, $contact["notify"]);
1681                 if ($server_url != "")
1682                         $contact["server_url"] = $server_url;
1683         } else
1684                 $contact["server_url"] = normalise_link($contact["server_url"]);
1685
1686         if (($contact["addr"] == "") AND ($contact["server_url"] != "") AND ($contact["nick"] != "")) {
1687                 $hostname = str_replace("http://", "", $contact["server_url"]);
1688                 $contact["addr"] = $contact["nick"]."@".$hostname;
1689         }
1690
1691         // Check if any field changed
1692         $update = false;
1693         unset($fields["generation"]);
1694
1695         if ((($contact["generation"] > 0) AND ($contact["generation"] <= $r[0]["generation"])) OR ($r[0]["generation"] == 0)) {
1696                 foreach ($fields AS $field => $data)
1697                         if ($contact[$field] != $r[0][$field]) {
1698                                 logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
1699                                 $update = true;
1700                         }
1701
1702                 if ($contact["generation"] < $r[0]["generation"]) {
1703                         logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
1704                         $update = true;
1705                 }
1706         }
1707
1708         if ($update) {
1709                 logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
1710
1711                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1712                                         `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
1713                                         `contact-type` = %d, `alias` = '%s', `notify` = '%s', `url` = '%s',
1714                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1715                                         `server_url` = '%s', `connect` = '%s'
1716                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1717                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1718                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1719                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1720                         intval($contact["nsfw"]), intval($contact["contact-type"]), dbesc($contact["alias"]),
1721                         dbesc($contact["notify"]), dbesc($contact["url"]), dbesc($contact["location"]),
1722                         dbesc($contact["about"]), intval($contact["generation"]), dbesc($contact["updated"]),
1723                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1724                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1725
1726
1727                 // Now update the contact entry with the user id "0" as well.
1728                 // This is used for the shadow copies of public items.
1729                 $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
1730                         dbesc(normalise_link($contact["url"])));
1731
1732                 if ($r) {
1733                         logger("Update shadow contact ".$r[0]["id"], LOGGER_DEBUG);
1734
1735                         update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
1736
1737                         q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s',
1738                                                 `network` = '%s', `bd` = '%s', `gender` = '%s',
1739                                                 `keywords` = '%s', `alias` = '%s', `contact-type` = %d,
1740                                                 `url` = '%s', `location` = '%s', `about` = '%s'
1741                                         WHERE `id` = %d",
1742                                 dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["addr"]),
1743                                 dbesc($contact["network"]), dbesc($contact["birthday"]), dbesc($contact["gender"]),
1744                                 dbesc($contact["keywords"]), dbesc($contact["alias"]), intval($contact["contact-type"]),
1745                                 dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1746                                 intval($r[0]["id"]));
1747                 }
1748         }
1749
1750         return $gcontact_id;
1751 }
1752
1753 /**
1754  * @brief Updates the gcontact entry from probe
1755  *
1756  * @param str $url profile link
1757  */
1758 function update_gcontact_from_probe($url) {
1759         $data = probe_url($url);
1760
1761         if (in_array($data["network"], array(NETWORK_PHANTOM))) {
1762                 logger("Invalid network for contact url ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1763                 return;
1764         }
1765
1766         update_gcontact($data);
1767 }
1768
1769 /**
1770  * @brief Update the gcontact entry for a given user id
1771  *
1772  * @param int $uid User ID
1773  */
1774 function update_gcontact_for_user($uid) {
1775         $r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
1776                         `profile`.`name`, `profile`.`about`, `profile`.`gender`,
1777                         `profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
1778                         `profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
1779                         `contact`.`notify`, `contact`.`url`, `contact`.`addr`
1780                 FROM `profile`
1781                         INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
1782                         INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
1783                 WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
1784                 intval($uid));
1785
1786         $location = formatted_location(array("locality" => $r[0]["locality"], "region" => $r[0]["region"],
1787                                                 "country-name" => $r[0]["country-name"]));
1788
1789         // The "addr" field was added in 3.4.3 so it can be empty for older users
1790         if ($r[0]["addr"] != "")
1791                 $addr = $r[0]["nickname"].'@'.str_replace(array("http://", "https://"), "", App::get_baseurl());
1792         else
1793                 $addr = $r[0]["addr"];
1794
1795         $gcontact = array("name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
1796                         "gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
1797                         "birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
1798                         "notify" => $r[0]["notify"], "url" => $r[0]["url"],
1799                         "hide" => ($r[0]["hidewall"] OR !$r[0]["net-publish"]),
1800                         "nick" => $r[0]["nickname"], "addr" => $addr,
1801                         "connect" => $addr, "server_url" => App::get_baseurl(),
1802                         "generation" => 1, "network" => NETWORK_DFRN);
1803
1804         update_gcontact($gcontact);
1805 }
1806
1807 /**
1808  * @brief Fetches users of given GNU Social server
1809  *
1810  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1811  *
1812  * @param str $server Server address
1813  */
1814 function gs_fetch_users($server) {
1815
1816         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1817
1818         $url = $server."/main/statistics";
1819
1820         $result = z_fetch_url($url);
1821         if (!$result["success"])
1822                 return false;
1823
1824         $statistics = json_decode($result["body"]);
1825
1826         if (is_object($statistics->config)) {
1827                 if ($statistics->config->instance_with_ssl)
1828                         $server = "https://";
1829                 else
1830                         $server = "http://";
1831
1832                 $server .= $statistics->config->instance_address;
1833
1834                 $hostname = $statistics->config->instance_address;
1835         } else {
1836                 if ($statistics->instance_with_ssl)
1837                         $server = "https://";
1838                 else
1839                         $server = "http://";
1840
1841                 $server .= $statistics->instance_address;
1842
1843                 $hostname = $statistics->instance_address;
1844         }
1845
1846         if (is_object($statistics->users))
1847                 foreach ($statistics->users AS $nick => $user) {
1848                         $profile_url = $server."/".$user->nickname;
1849
1850                         $contact = array("url" => $profile_url,
1851                                         "name" => $user->fullname,
1852                                         "addr" => $user->nickname."@".$hostname,
1853                                         "nick" => $user->nickname,
1854                                         "about" => $user->bio,
1855                                         "network" => NETWORK_OSTATUS,
1856                                         "photo" => App::get_baseurl()."/images/person-175.jpg");
1857                         get_gcontact_id($contact);
1858                 }
1859 }
1860
1861 /**
1862  * @brief Asking GNU Social server on a regular base for their user data
1863  *
1864  */
1865 function gs_discover() {
1866
1867         $requery_days = intval(get_config("system", "poco_requery_days"));
1868
1869         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1870
1871         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1872                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1873
1874         if (!$r)
1875                 return;
1876
1877         foreach ($r AS $server) {
1878                 gs_fetch_users($server["url"]);
1879                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1880         }
1881 }
1882 ?>