include/socgraph.php

   1 <?php
   2
   3 require_once('include/datetime.php');
   4 require_once("include/Scrape.php");
   5 require_once("include/html2bbcode.php");
   6
   7 /*
   8  To-Do:
   9  - Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
  10 */
  11
  12 /*
  13  * poco_load
  14  *
  15  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  16  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  17  * if anything (name or photo) has changed.
  18  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  19  *
  20  * Once the global contact is stored add (if necessary) the contact linkage which associates
  21  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  22  * pointing to the same global contact id.
  23  *
  24  */
  25
  26
  27
  28
  29 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  30
  31         $a = get_app();
  32
  33         if($cid) {
  34                 if((! $url) || (! $uid)) {
  35                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  36                                 intval($cid)
  37                         );
  38                         if(count($r)) {
  39                                 $url = $r[0]['poco'];
  40                                 $uid = $r[0]['uid'];
  41                         }
  42                 }
  43                 if(! $uid)
  44                         return;
  45         }
  46
  47         if(! $url)
  48                 return;
  49
  50         $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') ;
  51
  52         logger('poco_load: ' . $url, LOGGER_DEBUG);
  53
  54         $s = fetch_url($url);
  55
  56         logger('poco_load: returns ' . $s, LOGGER_DATA);
  57
  58         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  59
  60         if(($a->get_curl_code() > 299) || (! $s))
  61                 return;
  62
  63         $j = json_decode($s);
  64
  65         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  66
  67         if(! isset($j->entry))
  68                 return;
  69
  70         $total = 0;
  71         foreach($j->entry as $entry) {
  72
  73                 $total ++;
  74                 $profile_url = '';
  75                 $profile_photo = '';
  76                 $connect_url = '';
  77                 $name = '';
  78                 $network = '';
  79                 $updated = '0000-00-00 00:00:00';
  80                 $location = '';
  81                 $about = '';
  82                 $keywords = '';
  83                 $gender = '';
  84                 $generation = 0;
  85
  86                 $name = $entry->displayName;
  87
  88                 if(isset($entry->urls)) {
  89                         foreach($entry->urls as $url) {
  90                                 if($url->type == 'profile') {
  91                                         $profile_url = $url->value;
  92                                         continue;
  93                                 }
  94                                 if($url->type == 'webfinger') {
  95                                         $connect_url = str_replace('acct:' , '', $url->value);
  96                                         continue;
  97                                 }
  98                         }
  99                 }
 100                 if(isset($entry->photos)) {
 101                         foreach($entry->photos as $photo) {
 102                                 if($photo->type == 'profile') {
 103                                         $profile_photo = $photo->value;
 104                                         continue;
 105                                 }
 106                         }
 107                 }
 108
 109                 if(isset($entry->updated))
 110                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 111
 112                 if(isset($entry->network))
 113                         $network = $entry->network;
 114
 115                 if(isset($entry->currentLocation))
 116                         $location = $entry->currentLocation;
 117
 118                 if(isset($entry->aboutMe))
 119                         $about = html2bbcode($entry->aboutMe);
 120
 121                 if(isset($entry->gender))
 122                         $gender = $entry->gender;
 123
 124                 if(isset($entry->generation) AND ($entry->generation > 0))
 125                         $generation = ++$entry->generation;
 126
 127                 if(isset($entry->tags))
 128                         foreach($entry->tags as $tag)
 129                                 $keywords = implode(", ", $tag);
 130
 131                 // If you query a Friendica server for its profiles, the network has to be Friendica
 132                 // To-Do: It could also be a Redmatrix server
 133                 //if ($uid == 0)
 134                 //      $network = NETWORK_DFRN;
 135
 136                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 137
 138                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 139                 if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 140                         q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 141                                 WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 142                                 dbesc($location),
 143                                 dbesc($about),
 144                                 dbesc($keywords),
 145                                 dbesc($gender),
 146                                 dbesc(normalise_link($profile_url)),
 147                                 dbesc(NETWORK_DFRN));
 148         }
 149         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 150
 151         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 152                 intval($cid),
 153                 intval($uid),
 154                 intval($zcid)
 155         );
 156
 157 }
 158
 159 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 160
 161         $a = get_app();
 162
 163         // Generation:
 164         //  0: No definition
 165         //  1: Profiles on this server
 166         //  2: Contacts of profiles on this server
 167         //  3: Contacts of contacts of profiles on this server
 168         //  4: ...
 169
 170         $gcid = "";
 171
 172         if ($profile_url == "")
 173                 return $gcid;
 174
 175         $urlparts = parse_url($profile_url);
 176         if (!isset($urlparts["scheme"]))
 177                 return $gcid;
 178
 179         if (in_array($urlparts["host"], array("facebook.com", "twitter.com", "www.twitter-rss.com",
 180                                                 "identi.ca", "alpha.app.net")))
 181                 return $gcid;
 182
 183         $orig_updated = $updated;
 184
 185         // Don't store the statusnet connector as network
 186         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 187         if ($network == NETWORK_STATUSNET)
 188                 $network = "";
 189
 190         // The global contacts should contain the original picture, not the cached one
 191         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 192                 $profile_photo = "";
 193
 194         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 195                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 196         );
 197         if(count($r))
 198                 $network = $r[0]["network"];
 199
 200         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 201                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 202                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 203                 );
 204                 if(count($r)) {
 205                         $network = $r[0]["network"];
 206                         $profile_url = $r[0]["url"];
 207                 }
 208         }
 209
 210         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 211                 dbesc(normalise_link($profile_url))
 212         );
 213
 214         if (count($x)) {
 215                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 216                         $network = $x[0]["network"];
 217
 218                 if ($updated == "0000-00-00 00:00:00")
 219                         $updated = $x[0]["updated"];
 220
 221                 $created = $x[0]["created"];
 222                 $last_contact = $x[0]["last_contact"];
 223                 $last_failure = $x[0]["last_failure"];
 224                 $server_url = $x[0]["server_url"];
 225                 $nick = $x[0]["nick"];
 226
 227                 if ($updated > $last_contact)
 228                         $last_contact = $updated;
 229         } else {
 230                 $created = "0000-00-00 00:00:00";
 231                 $last_contact = "0000-00-00 00:00:00";
 232                 $last_failure = "0000-00-00 00:00:00";
 233                 $server_url = "";
 234
 235                 $urlparts = parse_url($profile_url);
 236                 $nick = end(explode("/", $urlparts["path"]));
 237         }
 238
 239         if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == ""))
 240                 AND poco_reachable($profile_url, $server_url, $network)) {
 241                 $data = probe_url($profile_url);
 242                 $network = $data["network"];
 243                 $name = $data["name"];
 244                 $nick = $data["nick"];
 245                 $profile_url = $data["url"];
 246                 $profile_photo = $data["photo"];
 247                 $server_url = $data["baseurl"];
 248         }
 249
 250         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 251                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 252                         dbesc($network),
 253                         dbesc(normalise_link($profile_url))
 254                 );
 255         }
 256
 257         if (($name == "") OR ($profile_photo == ""))
 258                 return $gcid;
 259
 260         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 261                 return $gcid;
 262
 263         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 264
 265         poco_check_server($server_url, $network);
 266
 267         // Fetch last update manually if it is enabled in the system
 268         // AND ($orig_updated == "0000-00-00 00:00:00")
 269         if (get_config('system','poco_completion')
 270                 AND poco_do_update($created, $updated, $last_failure, $last_contact)
 271                 AND poco_reachable($profile_url, $server_url, $network)) {
 272                 $last_updated = poco_last_updated($profile_url);
 273                 if ($last_updated) {
 274                         $updated = $last_updated;
 275                         $last_contact = datetime_convert();
 276                         logger("Last updated for profile ".$profile_url.": ".$updated, LOGGER_DEBUG);
 277                 } else
 278                         $last_failure = datetime_convert();
 279         }
 280
 281         if(count($x)) {
 282                 $gcid = $x[0]['id'];
 283
 284                 if (($location == "") AND ($x[0]['location'] != ""))
 285                         $location = $x[0]['location'];
 286
 287                 if (($about == "") AND ($x[0]['about'] != ""))
 288                         $about = $x[0]['about'];
 289
 290                 if (($gender == "") AND ($x[0]['gender'] != ""))
 291                         $gender = $x[0]['gender'];
 292
 293                 if (($keywords == "") AND ($x[0]['keywords'] != ""))
 294                         $keywords = $x[0]['keywords'];
 295
 296                 if (($generation == 0) AND ($x[0]['generation'] > 0))
 297                         $generation = $x[0]['generation'];
 298
 299                 if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
 300                         q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
 301                                 `updated` = '%s', `last_contact` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
 302                                 WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
 303                                 dbesc($name),
 304                                 dbesc($network),
 305                                 dbesc($profile_photo),
 306                                 dbesc($connect_url),
 307                                 dbesc($profile_url),
 308                                 dbesc($server_url),
 309                                 dbesc($updated),
 310                                 dbesc($last_contact),
 311                                 dbesc($location),
 312                                 dbesc($about),
 313                                 dbesc($keywords),
 314                                 dbesc($gender),
 315                                 intval($generation),
 316                                 intval($generation),
 317                                 dbesc(normalise_link($profile_url))
 318                         );
 319                 }
 320         } else {
 321                 q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `last_contact`, `last_failure`, `location`, `about`, `keywords`, `gender`, `generation`)
 322                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 323                         dbesc($name),
 324                         dbesc($nick),
 325                         dbesc($network),
 326                         dbesc($profile_url),
 327                         dbesc(normalise_link($profile_url)),
 328                         dbesc($profile_photo),
 329                         dbesc($connect_url),
 330                         dbesc($server_url),
 331                         dbesc(datetime_convert()),
 332                         dbesc($updated),
 333                         dbesc($last_contact),
 334                         dbesc($last_failure),
 335                         dbesc($location),
 336                         dbesc($about),
 337                         dbesc($keywords),
 338                         dbesc($gender),
 339                         intval($generation)
 340                 );
 341                 $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 342                         dbesc(normalise_link($profile_url))
 343                 );
 344                 if(count($x))
 345                         $gcid = $x[0]['id'];
 346         }
 347
 348         if(! $gcid)
 349                 return $gcid;
 350
 351         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 352                 intval($cid),
 353                 intval($uid),
 354                 intval($gcid),
 355                 intval($zcid)
 356         );
 357         if(! count($r)) {
 358                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 359                         intval($cid),
 360                         intval($uid),
 361                         intval($gcid),
 362                         intval($zcid),
 363                         dbesc(datetime_convert())
 364                 );
 365         } else {
 366                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 367                         dbesc(datetime_convert()),
 368                         intval($cid),
 369                         intval($uid),
 370                         intval($gcid),
 371                         intval($zcid)
 372                 );
 373         }
 374
 375         // For unknown reasons there are sometimes duplicates
 376         q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
 377                 NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
 378                 dbesc(normalise_link($profile_url)),
 379                 intval($gcid)
 380         );
 381
 382         return $gcid;
 383 }
 384
 385 function poco_reachable($profile, $server = "", $network = "") {
 386
 387         if ($server == "")
 388                 $server = poco_detect_server($profile);
 389
 390         if ($server == "")
 391                 return true;
 392
 393         return poco_check_server($server, $network);
 394 }
 395
 396 function poco_detect_server($profile) {
 397
 398         // Try to detect the server path based upon some known standard paths
 399         $server_url = "";
 400
 401         if ($server_url == "") {
 402                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 403                 if ($friendica != $profile) {
 404                         $server_url = $friendica;
 405                         $network = NETWORK_DFRN;
 406                 }
 407         }
 408
 409         if ($server_url == "") {
 410                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 411                 if ($diaspora != $profile) {
 412                         $server_url = $diaspora;
 413                         $network = NETWORK_DIASPORA;
 414                 }
 415         }
 416
 417         if ($server_url == "") {
 418                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 419                 if ($red != $profile) {
 420                         $server_url = $red;
 421                         $network = NETWORK_DIASPORA;
 422                 }
 423         }
 424
 425         return $server_url;
 426 }
 427
 428 function poco_last_updated($profile) {
 429
 430         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 431                         dbesc(normalise_link($profile)));
 432
 433         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 434                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 435                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 436
 437         if ($gcontacts[0]["server_url"] != "")
 438                 $server_url = $gcontacts[0]["server_url"];
 439         else
 440                 $server_url = poco_detect_server($profile);
 441
 442         if ($server_url != "")
 443                 if (!poco_check_server($pserver_url, $gcontacts[0]["network"]))
 444                         return false;
 445
 446         // noscrape is really fast so we don't cache the call.
 447         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 448
 449                 //  Use noscrape if possible
 450                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 451
 452                 if ($server) {
 453                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 454                          if ($noscraperet["success"]) {
 455                                 $noscrape = json_decode($noscraperet["body"], true);
 456
 457                                 if (($noscrape["name"] != "") AND ($noscrape["name"] != $gcontacts[0]["name"]))
 458                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 459                                                 dbesc($noscrape["name"]), dbesc(normalise_link($profile)));
 460
 461                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 462                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 463                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 464
 465                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 466                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 467                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 468
 469                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 470                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 471                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 472
 473                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["name"]))
 474                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 475                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 476
 477                                 if (isset($noscrape["tags"]))
 478                                         $keywords = implode(" ", $noscrape["tags"]);
 479                                 else
 480                                         $keywords = "";
 481
 482                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 483                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 484                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 485
 486                                 $location = $noscrape["locality"];
 487
 488                                 if ($noscrape["region"] != "") {
 489                                         if ($location != "")
 490                                                 $location .= ", ";
 491
 492                                         $location .= $noscrape["region"];
 493                                 }
 494
 495                                 if ($noscrape["country-name"] != "") {
 496                                         if ($location != "")
 497                                                 $location .= ", ";
 498
 499                                         $location .= $noscrape["country-name"];
 500                                 }
 501
 502                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 503                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 504                                                 dbesc($location), dbesc(normalise_link($profile)));
 505
 506                                 // If we got data from noscrape then mark the contact as reachable
 507                                 if (is_array($noscrape) AND count($noscrape))
 508                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 509                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 510
 511                                 return $noscrape["updated"];
 512                         }
 513                 }
 514         }
 515
 516         // If we only can poll the feed, then we only do this once a while
 517         if (!poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 518                 return $gcontacts[0]["updated"];
 519
 520         $data = probe_url($profile);
 521
 522         if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
 523                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 524                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 525                 return false;
 526         }
 527
 528         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 529                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 530                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 531
 532         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 533                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 534                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 535
 536         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 537                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 538                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 539
 540         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 541                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 542                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 543
 544         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 545                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 546                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 547
 548         $feedret = z_fetch_url($data["poll"]);
 549
 550         if (!$feedret["success"]) {
 551                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 552                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 553                 return false;
 554         }
 555
 556         $doc = new DOMDocument();
 557         @$doc->loadXML($feedret["body"]);
 558
 559         $xpath = new DomXPath($doc);
 560         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 561
 562         $entries = $xpath->query('/atom:feed/atom:entry');
 563
 564         $last_updated = "";
 565
 566         foreach ($entries AS $entry) {
 567                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 568                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 569
 570                 if ($last_updated < $published)
 571                         $last_updated = $published;
 572
 573                 if ($last_updated < $updated)
 574                         $last_updated = $updated;
 575         }
 576
 577         // Maybe there aren't any entries. Then check if it is a valid feed
 578         if ($last_updated == "")
 579                 if ($xpath->query('/atom:feed')->length > 0)
 580                         $last_updated = "0000-00-00 00:00:00";
 581
 582         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 583                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 584
 585         if (($gcontacts[0]["generation"] == 0))
 586                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 587                         dbesc(normalise_link($profile)));
 588
 589         return($last_updated);
 590 }
 591
 592 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 593         $now = strtotime(datetime_convert());
 594
 595         if ($updated > $last_contact)
 596                 $contact_time = strtotime($updated);
 597         else
 598                 $contact_time = strtotime($last_contact);
 599
 600         $failure_time = strtotime($last_failure);
 601         $created_time = strtotime($created);
 602
 603         // If there is no "created" time then use the current time
 604         if ($created_time <= 0)
 605                 $created_time = $now;
 606
 607         // If the last contact was less than 24 hours then don't update
 608         if (($now - $contact_time) < (60 * 60 * 24))
 609                 return false;
 610
 611         // If the last failure was less than 24 hours then don't update
 612         if (($now - $failure_time) < (60 * 60 * 24))
 613                 return false;
 614
 615         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 616         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 617         //      return false;
 618
 619         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 620         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 621                 return false;
 622
 623         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 624         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 625                 return false;
 626
 627         return true;
 628 }
 629
 630 function poco_to_boolean($val) {
 631         if (($val == "true") OR ($val == 1))
 632                 return(true);
 633         if (($val == "false") OR ($val == 0))
 634                 return(false);
 635
 636         return ($val);
 637 }
 638
 639 function poco_check_server($server_url, $network = "", $force = false) {
 640
 641         if ($server_url == "")
 642                 return false;
 643
 644         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 645         if ($servers) {
 646
 647                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 648                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 649                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 650
 651                 $poco = $servers[0]["poco"];
 652                 $noscrape = $servers[0]["noscrape"];
 653
 654                 if ($network == "")
 655                         $network = $servers[0]["network"];
 656
 657                 $last_contact = $servers[0]["last_contact"];
 658                 $last_failure = $servers[0]["last_failure"];
 659                 $version = $servers[0]["version"];
 660                 $platform = $servers[0]["platform"];
 661                 $site_name = $servers[0]["site_name"];
 662                 $info = $servers[0]["info"];
 663                 $register_policy = $servers[0]["register_policy"];
 664
 665                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 666                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 667                         return ($last_contact >= $last_failure);
 668                 }
 669         } else {
 670                 $poco = "";
 671                 $noscrape = "";
 672                 $version = "";
 673                 $platform = "";
 674                 $site_name = "";
 675                 $info = "";
 676                 $register_policy = -1;
 677
 678                 $last_contact = "0000-00-00 00:00:00";
 679                 $last_failure = "0000-00-00 00:00:00";
 680         }
 681         logger("Server ".$server_url." is unknown. Start discovery.", LOGGER_DEBUG);
 682
 683         $failure = false;
 684         $orig_last_failure = $last_failure;
 685
 686         // Check if the page is accessible via SSL.
 687         $server_url = str_replace("http://", "https://", $server_url);
 688         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 689
 690         // Maybe the page is unencrypted only?
 691         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 692         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 693                 $server_url = str_replace("https://", "http://", $server_url);
 694                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 695
 696                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 697         }
 698
 699         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 700                 $last_failure = datetime_convert();
 701                 $failure = true;
 702         } elseif ($network == NETWORK_DIASPORA)
 703                 $last_contact = datetime_convert();
 704
 705         if (!$failure) {
 706                 // Test for Diaspora
 707                 $serverret = z_fetch_url($server_url);
 708
 709                 $lines = explode("\n",$serverret["header"]);
 710                 if(count($lines))
 711                         foreach($lines as $line) {
 712                                 $line = trim($line);
 713                                 if(stristr($line,'X-Diaspora-Version:')) {
 714                                         $platform = "Diaspora";
 715                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 716                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 717                                         $network = NETWORK_DIASPORA;
 718                                 }
 719                         }
 720         }
 721
 722         if (!$failure) {
 723                 // Test for Statusnet
 724                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 725                 // The "not implemented" is a special treatment for really, really old Friendica versions
 726                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 727                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 728                         $platform = "StatusNet";
 729                         $version = trim($serverret["body"], '"');
 730                         $network = NETWORK_OSTATUS;
 731                 }
 732
 733                 // Test for GNU Social
 734                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 735                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 736                         $platform = "GNU Social";
 737                         $version = trim($serverret["body"], '"');
 738                         $network = NETWORK_OSTATUS;
 739                 }
 740
 741                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 742                 if ($serverret["success"]) {
 743                         $data = json_decode($serverret["body"]);
 744
 745                         if (isset($data->site->server)) {
 746                                 $last_contact = datetime_convert();
 747
 748                                 if (isset($data->site->hubzilla)) {
 749                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 750                                         $version = $data->site->hubzilla->RED_VERSION;
 751                                         $network = NETWORK_DIASPORA;
 752                                 }
 753                                 if (isset($data->site->redmatrix)) {
 754                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 755                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 756                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 757                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 758
 759                                         $version = $data->site->redmatrix->RED_VERSION;
 760                                         $network = NETWORK_DIASPORA;
 761                                 }
 762                                 if (isset($data->site->friendica)) {
 763                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 764                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 765                                         $network = NETWORK_DFRN;
 766                                 }
 767
 768                                 $site_name = $data->site->name;
 769
 770                                 $data->site->closed = poco_to_boolean($data->site->closed);
 771                                 $data->site->private = poco_to_boolean($data->site->private);
 772                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 773
 774                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 775                                         $register_policy = REGISTER_APPROVE;
 776                                 elseif (!$data->site->closed AND !$data->site->private)
 777                                         $register_policy = REGISTER_OPEN;
 778                                 else
 779                                         $register_policy = REGISTER_CLOSED;
 780                         }
 781                 }
 782         }
 783
 784         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 785         if (!$failure) {
 786                 $serverret = z_fetch_url($server_url."/statistics.json");
 787                 if ($serverret["success"]) {
 788                         $data = json_decode($serverret["body"]);
 789                         if ($version == "")
 790                                 $version = $data->version;
 791
 792                         $site_name = $data->name;
 793
 794                         if (isset($data->network) AND ($platform == ""))
 795                                 $platform = $data->network;
 796
 797                         if ($platform == "Diaspora")
 798                                 $network = NETWORK_DIASPORA;
 799
 800                         if ($data->registrations_open)
 801                                 $register_policy = REGISTER_OPEN;
 802                         else
 803                                 $register_policy = REGISTER_CLOSED;
 804
 805                         if (isset($data->version))
 806                                 $last_contact = datetime_convert();
 807                 }
 808         }
 809
 810         // Check for noscrape
 811         // Friendica servers could be detected as OStatus servers
 812         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 813                 $serverret = z_fetch_url($server_url."/friendica/json");
 814
 815                 if (!$serverret["success"])
 816                         $serverret = z_fetch_url($server_url."/friendika/json");
 817
 818                 if ($serverret["success"]) {
 819                         $data = json_decode($serverret["body"]);
 820
 821                         if (isset($data->version)) {
 822                                 $last_contact = datetime_convert();
 823                                 $network = NETWORK_DFRN;
 824
 825                                 $noscrape = $data->no_scrape_url;
 826                                 $version = $data->version;
 827                                 $site_name = $data->site_name;
 828                                 $info = $data->info;
 829                                 $register_policy_str = $data->register_policy;
 830                                 $platform = $data->platform;
 831
 832                                 switch ($register_policy_str) {
 833                                         case "REGISTER_CLOSED":
 834                                                 $register_policy = REGISTER_CLOSED;
 835                                                 break;
 836                                         case "REGISTER_APPROVE":
 837                                                 $register_policy = REGISTER_APPROVE;
 838                                                 break;
 839                                         case "REGISTER_OPEN":
 840                                                 $register_policy = REGISTER_OPEN;
 841                                                 break;
 842                                 }
 843                         }
 844                 }
 845         }
 846
 847         // Look for poco
 848         if (!$failure) {
 849                 $serverret = z_fetch_url($server_url."/poco");
 850                 if ($serverret["success"]) {
 851                         $data = json_decode($serverret["body"]);
 852                         if (isset($data->totalResults)) {
 853                                 $poco = $server_url."/poco";
 854                                 $last_contact = datetime_convert();
 855                         }
 856                 }
 857         }
 858
 859         // Check again if the server exists
 860         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 861
 862         if ($servers)
 863                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 864                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 865                         dbesc($server_url),
 866                         dbesc($version),
 867                         dbesc($site_name),
 868                         dbesc($info),
 869                         intval($register_policy),
 870                         dbesc($poco),
 871                         dbesc($noscrape),
 872                         dbesc($network),
 873                         dbesc($platform),
 874                         dbesc($last_contact),
 875                         dbesc($last_failure),
 876                         dbesc(normalise_link($server_url))
 877                 );
 878         else
 879                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 880                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 881                                 dbesc($server_url),
 882                                 dbesc(normalise_link($server_url)),
 883                                 dbesc($version),
 884                                 dbesc($site_name),
 885                                 dbesc($info),
 886                                 intval($register_policy),
 887                                 dbesc($poco),
 888                                 dbesc($noscrape),
 889                                 dbesc($network),
 890                                 dbesc($platform),
 891                                 dbesc(datetime_convert()),
 892                                 dbesc($last_contact),
 893                                 dbesc($last_failure),
 894                                 dbesc(datetime_convert())
 895                 );
 896
 897         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 898
 899         return !$failure;
 900 }
 901
 902 function poco_contact_from_body($body, $created, $cid, $uid) {
 903         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 904                 function ($match) use ($created, $cid, $uid){
 905                         return(sub_poco_from_share($match, $created, $cid, $uid));
 906                 }, $body);
 907 }
 908
 909 function sub_poco_from_share($share, $created, $cid, $uid) {
 910         $profile = "";
 911         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 912         if ($matches[1] != "")
 913                 $profile = $matches[1];
 914
 915         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 916         if ($matches[1] != "")
 917                 $profile = $matches[1];
 918
 919         if ($profile == "")
 920                 return;
 921
 922         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 923         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 924 }
 925
 926 function poco_store($item) {
 927
 928         // Isn't it public?
 929         if ($item['private'])
 930                 return;
 931
 932         // Or is it from a network where we don't store the global contacts?
 933         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 934                 return;
 935
 936         // Is it a global copy?
 937         $store_gcontact = ($item["uid"] == 0);
 938
 939         // Is it a comment on a global copy?
 940         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 941                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 942                 $store_gcontact = count($q);
 943         }
 944
 945         if (!$store_gcontact)
 946                 return;
 947
 948         // "3" means: We don't know this contact directly (Maybe a reshared item)
 949         $generation = 3;
 950         $network = "";
 951         $profile_url = $item["author-link"];
 952
 953         // Is it a user from our server?
 954         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 955                 dbesc(normalise_link($item["author-link"])));
 956         if (count($q)) {
 957                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 958                 $generation = 1;
 959                 $network = NETWORK_DFRN;
 960         } else { // Is it a contact from a user on our server?
 961                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 962                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 963                         dbesc(normalise_link($item["author-link"])),
 964                         dbesc(normalise_link($item["author-link"])),
 965                         dbesc($item["author-link"]),
 966                         dbesc(NETWORK_STATUSNET));
 967                 if (count($q)) {
 968                         $generation = 2;
 969                         $network = $q[0]["network"];
 970                         $profile_url = $q[0]["url"];
 971                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 972                 }
 973         }
 974
 975         if ($generation == 3)
 976                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 977
 978         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
 979
 980         // Maybe its a body with a shared item? Then extract a global contact from it.
 981         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
 982 }
 983
 984 function count_common_friends($uid,$cid) {
 985
 986         $r = q("SELECT count(*) as `total`
 987                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 988                 where `glink`.`cid` = %d and `glink`.`uid` = %d
 989                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 990                 intval($cid),
 991                 intval($uid),
 992                 intval($uid),
 993                 intval($cid)
 994         );
 995
 996 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
 997         if(count($r))
 998                 return $r[0]['total'];
 999         return 0;
1000
1001 }
1002
1003
1004 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1005
1006         if($shuffle)
1007                 $sql_extra = " order by rand() ";
1008         else
1009                 $sql_extra = " order by `gcontact`.`name` asc ";
1010
1011         $r = q("SELECT `gcontact`.*
1012                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1013                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1014                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
1015                 $sql_extra limit %d, %d",
1016                 intval($cid),
1017                 intval($uid),
1018                 intval($uid),
1019                 intval($cid),
1020                 intval($start),
1021                 intval($limit)
1022         );
1023
1024         return $r;
1025
1026 }
1027
1028
1029 function count_common_friends_zcid($uid,$zcid) {
1030
1031         $r = q("SELECT count(*) as `total`
1032                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1033                 where `glink`.`zcid` = %d
1034                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1035                 intval($zcid),
1036                 intval($uid)
1037         );
1038
1039         if(count($r))
1040                 return $r[0]['total'];
1041         return 0;
1042
1043 }
1044
1045 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1046
1047         if($shuffle)
1048                 $sql_extra = " order by rand() ";
1049         else
1050                 $sql_extra = " order by `gcontact`.`name` asc ";
1051
1052         $r = q("SELECT `gcontact`.*
1053                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1054                 where `glink`.`zcid` = %d
1055                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1056                 $sql_extra limit %d, %d",
1057                 intval($zcid),
1058                 intval($uid),
1059                 intval($start),
1060                 intval($limit)
1061         );
1062
1063         return $r;
1064
1065 }
1066
1067
1068 function count_all_friends($uid,$cid) {
1069
1070         $r = q("SELECT count(*) as `total`
1071                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1072                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1073                 intval($cid),
1074                 intval($uid)
1075         );
1076
1077         if(count($r))
1078                 return $r[0]['total'];
1079         return 0;
1080
1081 }
1082
1083
1084 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1085
1086         $r = q("SELECT `gcontact`.*
1087                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1088                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1089                 order by `gcontact`.`name` asc LIMIT %d, %d ",
1090                 intval($cid),
1091                 intval($uid),
1092                 intval($start),
1093                 intval($limit)
1094         );
1095
1096         return $r;
1097 }
1098
1099
1100
1101 function suggestion_query($uid, $start = 0, $limit = 80) {
1102
1103         if(! $uid)
1104                 return array();
1105
1106         $network = array(NETWORK_DFRN);
1107
1108         if (get_config('system','diaspora_enabled'))
1109                 $network[] = NETWORK_DIASPORA;
1110
1111         if (!get_config('system','ostatus_disabled'))
1112                 $network[] = NETWORK_OSTATUS;
1113
1114         $sql_network = implode("', '", $network);
1115         //$sql_network = "'".$sql_network."', ''";
1116         $sql_network = "'".$sql_network."'";
1117
1118         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1119                 INNER JOIN glink on glink.gcid = gcontact.id
1120                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1121                 and not gcontact.name in ( select name from contact where uid = %d )
1122                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1123                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1124                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1125                 AND `gcontact`.`network` IN (%s)
1126                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1127                 intval($uid),
1128                 intval($uid),
1129                 intval($uid),
1130                 intval($uid),
1131                 $sql_network,
1132                 intval($start),
1133                 intval($limit)
1134         );
1135
1136         if(count($r) && count($r) >= ($limit -1))
1137                 return $r;
1138
1139         $r2 = q("SELECT gcontact.* from gcontact
1140                 INNER JOIN glink on glink.gcid = gcontact.id
1141                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1142                 and not gcontact.name in ( select name from contact where uid = %d )
1143                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1144                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1145                 AND `gcontact`.`network` IN (%s)
1146                 order by rand() limit %d, %d ",
1147                 intval($uid),
1148                 intval($uid),
1149                 intval($uid),
1150                 $sql_network,
1151                 intval($start),
1152                 intval($limit)
1153         );
1154
1155         $list = array();
1156         foreach ($r2 AS $suggestion)
1157                 $list[$suggestion["nurl"]] = $suggestion;
1158
1159         foreach ($r AS $suggestion)
1160                 $list[$suggestion["nurl"]] = $suggestion;
1161
1162         return $list;
1163 }
1164
1165 function update_suggestions() {
1166
1167         $a = get_app();
1168
1169         $done = array();
1170
1171         // To-Do: Check if it is really neccessary to poll the own server
1172         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1173
1174         $done[] = $a->get_baseurl() . '/poco';
1175
1176         if(strlen(get_config('system','directory_submit_url'))) {
1177                 $x = fetch_url('http://dir.friendica.com/pubsites');
1178                 if($x) {
1179                         $j = json_decode($x);
1180                         if($j->entries) {
1181                                 foreach($j->entries as $entry) {
1182
1183                                         poco_check_server($entry->url);
1184
1185                                         $url = $entry->url . '/poco';
1186                                         if(! in_array($url,$done))
1187                                                 poco_load(0,0,0,$entry->url . '/poco');
1188                                 }
1189                         }
1190                 }
1191         }
1192
1193         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1194         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1195                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1196         );
1197
1198         if(count($r)) {
1199                 foreach($r as $rr) {
1200                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1201                         if(! in_array($base,$done))
1202                                 poco_load(0,0,0,$base);
1203                 }
1204         }
1205 }
1206
1207 function poco_discover($complete = false) {
1208
1209         $no_of_queries = 5;
1210
1211         $last_update = date("c", time() - (60 * 60 * 6)); // 24
1212
1213         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` > `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1214         if ($r)
1215                 foreach ($r AS $server) {
1216
1217                         if (!poco_check_server($server["url"], $server["network"]))
1218                                 continue;
1219
1220                         // Fetch all users from the other server
1221                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1222
1223                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1224
1225                         $retdata = z_fetch_url($url);
1226                         if ($retdata["success"]) {
1227                                 $data = json_decode($retdata["body"]);
1228
1229                                 poco_discover_server($data, 2);
1230
1231                                 if (get_config('system','poco_discovery') > 1) {
1232
1233                                         $timeframe = get_config('system','poco_discovery_since');
1234                                         if ($timeframe == 0)
1235                                                 $timeframe = 30;
1236
1237                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1238
1239                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1240                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1241
1242                                         $success = false;
1243
1244                                         $retdata = z_fetch_url($url);
1245                                         if ($retdata["success"]) {
1246                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1247                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1248                                         }
1249
1250                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1251                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1252                                                 poco_discover_server_users($data, $server);
1253                                         }
1254                                 }
1255
1256                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1257                                 if (!$complete AND (--$no_of_queries == 0))
1258                                         break;
1259                         } else  // If the server hadn't replied correctly, then force a sanity check
1260                                 poco_check_server($server["url"], $server["network"], true);
1261                 }
1262 }
1263
1264 function poco_discover_server_users($data, $server) {
1265
1266         if (!isset($data->entry))
1267                 return;
1268
1269         foreach ($data->entry AS $entry) {
1270                 $username = "";
1271                 if (isset($entry->urls)) {
1272                         foreach($entry->urls as $url)
1273                                 if($url->type == 'profile') {
1274                                         $profile_url = $url->value;
1275                                         $urlparts = parse_url($profile_url);
1276                                         $username = end(explode("/", $urlparts["path"]));
1277                                 }
1278                 }
1279                 if ($username != "") {
1280                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1281
1282                         // Fetch all contacts from a given user from the other server
1283                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1284
1285                         $retdata = z_fetch_url($url);
1286                         if ($retdata["success"])
1287                                 poco_discover_server(json_decode($retdata["body"]), 3);
1288                 }
1289         }
1290 }
1291
1292 function poco_discover_server($data, $default_generation = 0) {
1293
1294         if (!isset($data->entry) OR !count($data->entry))
1295                 return false;
1296
1297         $success = false;
1298
1299         foreach ($data->entry AS $entry) {
1300                 $profile_url = '';
1301                 $profile_photo = '';
1302                 $connect_url = '';
1303                 $name = '';
1304                 $network = '';
1305                 $updated = '0000-00-00 00:00:00';
1306                 $location = '';
1307                 $about = '';
1308                 $keywords = '';
1309                 $gender = '';
1310                 $generation = $default_generation;
1311
1312                 $name = $entry->displayName;
1313
1314                 if(isset($entry->urls)) {
1315                         foreach($entry->urls as $url) {
1316                                 if($url->type == 'profile') {
1317                                         $profile_url = $url->value;
1318                                         continue;
1319                                 }
1320                                 if($url->type == 'webfinger') {
1321                                         $connect_url = str_replace('acct:' , '', $url->value);
1322                                         continue;
1323                                 }
1324                         }
1325                 }
1326
1327                 if(isset($entry->photos)) {
1328                         foreach($entry->photos as $photo) {
1329                                 if($photo->type == 'profile') {
1330                                         $profile_photo = $photo->value;
1331                                         continue;
1332                                 }
1333                         }
1334                 }
1335
1336                 if(isset($entry->updated))
1337                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1338
1339                 if(isset($entry->network))
1340                         $network = $entry->network;
1341
1342                 if(isset($entry->currentLocation))
1343                         $location = $entry->currentLocation;
1344
1345                 if(isset($entry->aboutMe))
1346                         $about = html2bbcode($entry->aboutMe);
1347
1348                 if(isset($entry->gender))
1349                         $gender = $entry->gender;
1350
1351                 if(isset($entry->generation) AND ($entry->generation > 0))
1352                         $generation = ++$entry->generation;
1353
1354                 if(isset($entry->tags))
1355                         foreach($entry->tags as $tag)
1356                                 $keywords = implode(", ", $tag);
1357
1358                 if ($generation > 0) {
1359                         $success = true;
1360
1361                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1362                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1363                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1364                 }
1365         }
1366         return $success;
1367 }
1368 ?>