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