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  - Fetch profile data from profile page for Redmatrix users
  11  - Detect if it is a forum
  12 */
  13
  14 /*
  15  * poco_load
  16  *
  17  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  18  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  19  * if anything (name or photo) has changed.
  20  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  21  *
  22  * Once the global contact is stored add (if necessary) the contact linkage which associates
  23  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  24  * pointing to the same global contact id.
  25  *
  26  */
  27
  28
  29
  30
  31 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  32
  33         $a = get_app();
  34
  35         if($cid) {
  36                 if((! $url) || (! $uid)) {
  37                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  38                                 intval($cid)
  39                         );
  40                         if(count($r)) {
  41                                 $url = $r[0]['poco'];
  42                                 $uid = $r[0]['uid'];
  43                         }
  44                 }
  45                 if(! $uid)
  46                         return;
  47         }
  48
  49         if(! $url)
  50                 return;
  51
  52         $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') ;
  53
  54         logger('poco_load: ' . $url, LOGGER_DEBUG);
  55
  56         $s = fetch_url($url);
  57
  58         logger('poco_load: returns ' . $s, LOGGER_DATA);
  59
  60         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  61
  62         if(($a->get_curl_code() > 299) || (! $s))
  63                 return;
  64
  65         $j = json_decode($s);
  66
  67         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  68
  69         if(! isset($j->entry))
  70                 return;
  71
  72         $total = 0;
  73         foreach($j->entry as $entry) {
  74
  75                 $total ++;
  76                 $profile_url = '';
  77                 $profile_photo = '';
  78                 $connect_url = '';
  79                 $name = '';
  80                 $network = '';
  81                 $updated = '0000-00-00 00:00:00';
  82                 $location = '';
  83                 $about = '';
  84                 $keywords = '';
  85                 $gender = '';
  86                 $generation = 0;
  87
  88                 $name = $entry->displayName;
  89
  90                 if(isset($entry->urls)) {
  91                         foreach($entry->urls as $url) {
  92                                 if($url->type == 'profile') {
  93                                         $profile_url = $url->value;
  94                                         continue;
  95                                 }
  96                                 if($url->type == 'webfinger') {
  97                                         $connect_url = str_replace('acct:' , '', $url->value);
  98                                         continue;
  99                                 }
 100                         }
 101                 }
 102                 if(isset($entry->photos)) {
 103                         foreach($entry->photos as $photo) {
 104                                 if($photo->type == 'profile') {
 105                                         $profile_photo = $photo->value;
 106                                         continue;
 107                                 }
 108                         }
 109                 }
 110
 111                 if(isset($entry->updated))
 112                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 113
 114                 if(isset($entry->network))
 115                         $network = $entry->network;
 116
 117                 if(isset($entry->currentLocation))
 118                         $location = $entry->currentLocation;
 119
 120                 if(isset($entry->aboutMe))
 121                         $about = html2bbcode($entry->aboutMe);
 122
 123                 if(isset($entry->gender))
 124                         $gender = $entry->gender;
 125
 126                 if(isset($entry->generation) AND ($entry->generation > 0))
 127                         $generation = ++$entry->generation;
 128
 129                 if(isset($entry->tags))
 130                         foreach($entry->tags as $tag)
 131                                 $keywords = implode(", ", $tag);
 132
 133                 // If you query a Friendica server for its profiles, the network has to be Friendica
 134                 // To-Do: It could also be a Redmatrix server
 135                 //if ($uid == 0)
 136                 //      $network = NETWORK_DFRN;
 137
 138                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 139
 140                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 141                 if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 142                         q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 143                                 WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 144                                 dbesc($location),
 145                                 dbesc($about),
 146                                 dbesc($keywords),
 147                                 dbesc($gender),
 148                                 dbesc(normalise_link($profile_url)),
 149                                 dbesc(NETWORK_DFRN));
 150         }
 151         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 152
 153         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 154                 intval($cid),
 155                 intval($uid),
 156                 intval($zcid)
 157         );
 158
 159 }
 160
 161 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 162
 163         $a = get_app();
 164
 165         // Generation:
 166         //  0: No definition
 167         //  1: Profiles on this server
 168         //  2: Contacts of profiles on this server
 169         //  3: Contacts of contacts of profiles on this server
 170         //  4: ...
 171
 172         $gcid = "";
 173
 174         if ($profile_url == "")
 175                 return $gcid;
 176
 177         $urlparts = parse_url($profile_url);
 178         if (!isset($urlparts["scheme"]))
 179                 return $gcid;
 180
 181         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 182                                                 "identi.ca", "alpha.app.net")))
 183                 return $gcid;
 184
 185         $orig_updated = $updated;
 186
 187         // Don't store the statusnet connector as network
 188         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 189         if ($network == NETWORK_STATUSNET)
 190                 $network = "";
 191
 192         // The global contacts should contain the original picture, not the cached one
 193         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 194                 $profile_photo = "";
 195
 196         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 197                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 198         );
 199         if(count($r))
 200                 $network = $r[0]["network"];
 201
 202         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 203                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 204                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 205                 );
 206                 if(count($r)) {
 207                         $network = $r[0]["network"];
 208                         $profile_url = $r[0]["url"];
 209                 }
 210         }
 211
 212         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 213                 dbesc(normalise_link($profile_url))
 214         );
 215
 216         if (count($x)) {
 217                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 218                         $network = $x[0]["network"];
 219
 220                 if ($updated == "0000-00-00 00:00:00")
 221                         $updated = $x[0]["updated"];
 222
 223                 $created = $x[0]["created"];
 224                 $server_url = $x[0]["server_url"];
 225                 $nick = $x[0]["nick"];
 226         } else {
 227                 $created = "0000-00-00 00:00:00";
 228                 $server_url = "";
 229
 230                 $urlparts = parse_url($profile_url);
 231                 $nick = end(explode("/", $urlparts["path"]));
 232         }
 233
 234         if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == ""))
 235                 AND poco_reachable($profile_url, $server_url, $network, true)) {
 236                 $data = probe_url($profile_url);
 237
 238                 $network = $data["network"];
 239                 $name = $data["name"];
 240                 $nick = $data["nick"];
 241                 $profile_url = $data["url"];
 242                 $profile_photo = $data["photo"];
 243                 $server_url = $data["baseurl"];
 244         }
 245
 246         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 247                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 248                         dbesc($network),
 249                         dbesc(normalise_link($profile_url))
 250                 );
 251         }
 252
 253         if (($name == "") OR ($profile_photo == ""))
 254                 return $gcid;
 255
 256         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 257                 return $gcid;
 258
 259         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 260
 261         poco_check_server($server_url, $network);
 262
 263         if(count($x)) {
 264                 $gcid = $x[0]['id'];
 265
 266                 if (($location == "") AND ($x[0]['location'] != ""))
 267                         $location = $x[0]['location'];
 268
 269                 if (($about == "") AND ($x[0]['about'] != ""))
 270                         $about = $x[0]['about'];
 271
 272                 if (($gender == "") AND ($x[0]['gender'] != ""))
 273                         $gender = $x[0]['gender'];
 274
 275                 if (($keywords == "") AND ($x[0]['keywords'] != ""))
 276                         $keywords = $x[0]['keywords'];
 277
 278                 if (($generation == 0) AND ($x[0]['generation'] > 0))
 279                         $generation = $x[0]['generation'];
 280
 281                 if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
 282                         q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
 283                                 `updated` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
 284                                 WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
 285                                 dbesc($name),
 286                                 dbesc($network),
 287                                 dbesc($profile_photo),
 288                                 dbesc($connect_url),
 289                                 dbesc($profile_url),
 290                                 dbesc($server_url),
 291                                 dbesc($updated),
 292                                 dbesc($location),
 293                                 dbesc($about),
 294                                 dbesc($keywords),
 295                                 dbesc($gender),
 296                                 intval($generation),
 297                                 intval($generation),
 298                                 dbesc(normalise_link($profile_url))
 299                         );
 300                 }
 301         } else {
 302                 q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `location`, `about`, `keywords`, `gender`, `generation`)
 303                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 304                         dbesc($name),
 305                         dbesc($nick),
 306                         dbesc($network),
 307                         dbesc($profile_url),
 308                         dbesc(normalise_link($profile_url)),
 309                         dbesc($profile_photo),
 310                         dbesc($connect_url),
 311                         dbesc($server_url),
 312                         dbesc(datetime_convert()),
 313                         dbesc($updated),
 314                         dbesc($location),
 315                         dbesc($about),
 316                         dbesc($keywords),
 317                         dbesc($gender),
 318                         intval($generation)
 319                 );
 320                 $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 321                         dbesc(normalise_link($profile_url))
 322                 );
 323                 if(count($x))
 324                         $gcid = $x[0]['id'];
 325         }
 326
 327         if(! $gcid)
 328                 return $gcid;
 329
 330         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 331                 intval($cid),
 332                 intval($uid),
 333                 intval($gcid),
 334                 intval($zcid)
 335         );
 336         if(! count($r)) {
 337                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 338                         intval($cid),
 339                         intval($uid),
 340                         intval($gcid),
 341                         intval($zcid),
 342                         dbesc(datetime_convert())
 343                 );
 344         } else {
 345                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 346                         dbesc(datetime_convert()),
 347                         intval($cid),
 348                         intval($uid),
 349                         intval($gcid),
 350                         intval($zcid)
 351                 );
 352         }
 353
 354         // For unknown reasons there are sometimes duplicates
 355         q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
 356                 NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
 357                 dbesc(normalise_link($profile_url)),
 358                 intval($gcid)
 359         );
 360
 361         return $gcid;
 362 }
 363
 364 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 365
 366         if ($server == "")
 367                 $server = poco_detect_server($profile);
 368
 369         if ($server == "")
 370                 return true;
 371
 372         return poco_check_server($server, $network, $force);
 373 }
 374
 375 function poco_detect_server($profile) {
 376
 377         // Try to detect the server path based upon some known standard paths
 378         $server_url = "";
 379
 380         if ($server_url == "") {
 381                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 382                 if ($friendica != $profile) {
 383                         $server_url = $friendica;
 384                         $network = NETWORK_DFRN;
 385                 }
 386         }
 387
 388         if ($server_url == "") {
 389                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 390                 if ($diaspora != $profile) {
 391                         $server_url = $diaspora;
 392                         $network = NETWORK_DIASPORA;
 393                 }
 394         }
 395
 396         if ($server_url == "") {
 397                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 398                 if ($red != $profile) {
 399                         $server_url = $red;
 400                         $network = NETWORK_DIASPORA;
 401                 }
 402         }
 403
 404         return $server_url;
 405 }
 406
 407 function poco_last_updated($profile, $force = false) {
 408
 409         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 410                         dbesc(normalise_link($profile)));
 411
 412         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 413                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 414                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 415
 416         $urlparts = parse_url($profile);
 417         if (!isset($urlparts["scheme"]))
 418                 return;
 419
 420         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 421                                                 "identi.ca", "alpha.app.net"))) {
 422                 $networks = array("www.facebook.com" => NETWORK_FACEBOOK,
 423                                 "facebook.com" => NETWORK_FACEBOOK,
 424                                 "twitter.com" => NETWORK_TWITTER,
 425                                 "identi.ca" => NETWORK_PUMPIO,
 426                                 "alpha.app.net" => NETWORK_APPNET);
 427
 428                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 429                         dbesc($networks[$urlparts["host"]]), dbesc(normalise_link($profile)));
 430                 return;
 431         }
 432
 433         if ($gcontacts[0]["server_url"] != "")
 434                 $server_url = $gcontacts[0]["server_url"];
 435         else
 436                 $server_url = poco_detect_server($profile);
 437
 438         if ($server_url != "") {
 439                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 440
 441                         if ($force)
 442                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 443                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 444
 445                         return false;
 446                 }
 447
 448                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 449                         dbesc($server_url), dbesc(normalise_link($profile)));
 450         }
 451
 452         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 453                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 454                         dbesc(normalise_link($server_url)));
 455
 456                 if ($server)
 457                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 458                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 459                 else
 460                         return;
 461         }
 462
 463         // noscrape is really fast so we don't cache the call.
 464         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 465
 466                 //  Use noscrape if possible
 467                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 468
 469                 if ($server) {
 470                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 471                          if ($noscraperet["success"] AND ($noscraperet["body"] = "")) {
 472                                 $noscrape = json_decode($noscraperet["body"], true);
 473
 474                                 if (($noscrape["name"] != "") AND ($noscrape["name"] != $gcontacts[0]["name"]))
 475                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 476                                                 dbesc($noscrape["name"]), dbesc(normalise_link($profile)));
 477
 478                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 479                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 480                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 481
 482                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 483                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 484                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 485
 486                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 487                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 488                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 489
 490                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["name"]))
 491                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 492                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 493
 494                                 if (isset($noscrape["tags"]))
 495                                         $keywords = implode(" ", $noscrape["tags"]);
 496                                 else
 497                                         $keywords = "";
 498
 499                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 500                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 501                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 502
 503                                 $location = $noscrape["locality"];
 504
 505                                 if ($noscrape["region"] != "") {
 506                                         if ($location != "")
 507                                                 $location .= ", ";
 508
 509                                         $location .= $noscrape["region"];
 510                                 }
 511
 512                                 if ($noscrape["country-name"] != "") {
 513                                         if ($location != "")
 514                                                 $location .= ", ";
 515
 516                                         $location .= $noscrape["country-name"];
 517                                 }
 518
 519                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 520                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 521                                                 dbesc($location), dbesc(normalise_link($profile)));
 522
 523                                 // If we got data from noscrape then mark the contact as reachable
 524                                 if (is_array($noscrape) AND count($noscrape))
 525                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 526                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 527
 528                                 return $noscrape["updated"];
 529                         }
 530                 }
 531         }
 532
 533         // If we only can poll the feed, then we only do this once a while
 534         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 535                 return $gcontacts[0]["updated"];
 536
 537         $data = probe_url($profile);
 538
 539         if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
 540                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 541                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 542                 return false;
 543         }
 544
 545         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 546                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 547                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 548
 549         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 550                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 551                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 552
 553         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 554                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 555                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 556
 557         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 558                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 559                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 560
 561         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 562                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 563                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 564
 565         $feedret = z_fetch_url($data["poll"]);
 566
 567         if (!$feedret["success"]) {
 568                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 569                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 570                 return false;
 571         }
 572
 573         $doc = new DOMDocument();
 574         @$doc->loadXML($feedret["body"]);
 575
 576         $xpath = new DomXPath($doc);
 577         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 578
 579         $entries = $xpath->query('/atom:feed/atom:entry');
 580
 581         $last_updated = "";
 582
 583         foreach ($entries AS $entry) {
 584                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 585                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 586
 587                 if ($last_updated < $published)
 588                         $last_updated = $published;
 589
 590                 if ($last_updated < $updated)
 591                         $last_updated = $updated;
 592         }
 593
 594         // Maybe there aren't any entries. Then check if it is a valid feed
 595         if ($last_updated == "")
 596                 if ($xpath->query('/atom:feed')->length > 0)
 597                         $last_updated = "0000-00-00 00:00:00";
 598
 599         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 600                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 601
 602         if (($gcontacts[0]["generation"] == 0))
 603                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 604                         dbesc(normalise_link($profile)));
 605
 606         return($last_updated);
 607 }
 608
 609 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 610         $now = strtotime(datetime_convert());
 611
 612         if ($updated > $last_contact)
 613                 $contact_time = strtotime($updated);
 614         else
 615                 $contact_time = strtotime($last_contact);
 616
 617         $failure_time = strtotime($last_failure);
 618         $created_time = strtotime($created);
 619
 620         // If there is no "created" time then use the current time
 621         if ($created_time <= 0)
 622                 $created_time = $now;
 623
 624         // If the last contact was less than 24 hours then don't update
 625         if (($now - $contact_time) < (60 * 60 * 24))
 626                 return false;
 627
 628         // If the last failure was less than 24 hours then don't update
 629         if (($now - $failure_time) < (60 * 60 * 24))
 630                 return false;
 631
 632         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 633         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 634         //      return false;
 635
 636         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 637         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 638                 return false;
 639
 640         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 641         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 642                 return false;
 643
 644         return true;
 645 }
 646
 647 function poco_to_boolean($val) {
 648         if (($val == "true") OR ($val == 1))
 649                 return(true);
 650         if (($val == "false") OR ($val == 0))
 651                 return(false);
 652
 653         return ($val);
 654 }
 655
 656 function poco_check_server($server_url, $network = "", $force = false) {
 657
 658         if ($server_url == "")
 659                 return false;
 660
 661         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 662         if ($servers) {
 663
 664                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 665                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 666                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 667
 668                 $poco = $servers[0]["poco"];
 669                 $noscrape = $servers[0]["noscrape"];
 670
 671                 if ($network == "")
 672                         $network = $servers[0]["network"];
 673
 674                 $last_contact = $servers[0]["last_contact"];
 675                 $last_failure = $servers[0]["last_failure"];
 676                 $version = $servers[0]["version"];
 677                 $platform = $servers[0]["platform"];
 678                 $site_name = $servers[0]["site_name"];
 679                 $info = $servers[0]["info"];
 680                 $register_policy = $servers[0]["register_policy"];
 681
 682                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 683                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 684                         return ($last_contact >= $last_failure);
 685                 }
 686         } else {
 687                 $poco = "";
 688                 $noscrape = "";
 689                 $version = "";
 690                 $platform = "";
 691                 $site_name = "";
 692                 $info = "";
 693                 $register_policy = -1;
 694
 695                 $last_contact = "0000-00-00 00:00:00";
 696                 $last_failure = "0000-00-00 00:00:00";
 697         }
 698         logger("Server ".$server_url." is unknown. Start discovery.", LOGGER_DEBUG);
 699
 700         $failure = false;
 701         $orig_last_failure = $last_failure;
 702
 703         // Check if the page is accessible via SSL.
 704         $server_url = str_replace("http://", "https://", $server_url);
 705         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 706
 707         // Maybe the page is unencrypted only?
 708         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 709         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 710                 $server_url = str_replace("https://", "http://", $server_url);
 711                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 712
 713                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 714         }
 715
 716         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 717                 $last_failure = datetime_convert();
 718                 $failure = true;
 719         } elseif ($network == NETWORK_DIASPORA)
 720                 $last_contact = datetime_convert();
 721
 722         if (!$failure) {
 723                 // Test for Diaspora
 724                 $serverret = z_fetch_url($server_url);
 725
 726                 $lines = explode("\n",$serverret["header"]);
 727                 if(count($lines))
 728                         foreach($lines as $line) {
 729                                 $line = trim($line);
 730                                 if(stristr($line,'X-Diaspora-Version:')) {
 731                                         $platform = "Diaspora";
 732                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 733                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 734                                         $network = NETWORK_DIASPORA;
 735                                 }
 736                         }
 737         }
 738
 739         if (!$failure) {
 740                 // Test for Statusnet
 741                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 742                 // The "not implemented" is a special treatment for really, really old Friendica versions
 743                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 744                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 745                         $platform = "StatusNet";
 746                         $version = trim($serverret["body"], '"');
 747                         $network = NETWORK_OSTATUS;
 748                 }
 749
 750                 // Test for GNU Social
 751                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 752                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 753                         $platform = "GNU Social";
 754                         $version = trim($serverret["body"], '"');
 755                         $network = NETWORK_OSTATUS;
 756                 }
 757
 758                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 759                 if ($serverret["success"]) {
 760                         $data = json_decode($serverret["body"]);
 761
 762                         if (isset($data->site->server)) {
 763                                 $last_contact = datetime_convert();
 764
 765                                 if (isset($data->site->hubzilla)) {
 766                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 767                                         $version = $data->site->hubzilla->RED_VERSION;
 768                                         $network = NETWORK_DIASPORA;
 769                                 }
 770                                 if (isset($data->site->redmatrix)) {
 771                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 772                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 773                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 774                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 775
 776                                         $version = $data->site->redmatrix->RED_VERSION;
 777                                         $network = NETWORK_DIASPORA;
 778                                 }
 779                                 if (isset($data->site->friendica)) {
 780                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 781                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 782                                         $network = NETWORK_DFRN;
 783                                 }
 784
 785                                 $site_name = $data->site->name;
 786
 787                                 $data->site->closed = poco_to_boolean($data->site->closed);
 788                                 $data->site->private = poco_to_boolean($data->site->private);
 789                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 790
 791                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 792                                         $register_policy = REGISTER_APPROVE;
 793                                 elseif (!$data->site->closed AND !$data->site->private)
 794                                         $register_policy = REGISTER_OPEN;
 795                                 else
 796                                         $register_policy = REGISTER_CLOSED;
 797                         }
 798                 }
 799         }
 800
 801         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 802         if (!$failure) {
 803                 $serverret = z_fetch_url($server_url."/statistics.json");
 804                 if ($serverret["success"]) {
 805                         $data = json_decode($serverret["body"]);
 806                         if ($version == "")
 807                                 $version = $data->version;
 808
 809                         $site_name = $data->name;
 810
 811                         if (isset($data->network) AND ($platform == ""))
 812                                 $platform = $data->network;
 813
 814                         if ($platform == "Diaspora")
 815                                 $network = NETWORK_DIASPORA;
 816
 817                         if ($data->registrations_open)
 818                                 $register_policy = REGISTER_OPEN;
 819                         else
 820                                 $register_policy = REGISTER_CLOSED;
 821
 822                         if (isset($data->version))
 823                                 $last_contact = datetime_convert();
 824                 }
 825         }
 826
 827         // Check for noscrape
 828         // Friendica servers could be detected as OStatus servers
 829         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 830                 $serverret = z_fetch_url($server_url."/friendica/json");
 831
 832                 if (!$serverret["success"])
 833                         $serverret = z_fetch_url($server_url."/friendika/json");
 834
 835                 if ($serverret["success"]) {
 836                         $data = json_decode($serverret["body"]);
 837
 838                         if (isset($data->version)) {
 839                                 $last_contact = datetime_convert();
 840                                 $network = NETWORK_DFRN;
 841
 842                                 $noscrape = $data->no_scrape_url;
 843                                 $version = $data->version;
 844                                 $site_name = $data->site_name;
 845                                 $info = $data->info;
 846                                 $register_policy_str = $data->register_policy;
 847                                 $platform = $data->platform;
 848
 849                                 switch ($register_policy_str) {
 850                                         case "REGISTER_CLOSED":
 851                                                 $register_policy = REGISTER_CLOSED;
 852                                                 break;
 853                                         case "REGISTER_APPROVE":
 854                                                 $register_policy = REGISTER_APPROVE;
 855                                                 break;
 856                                         case "REGISTER_OPEN":
 857                                                 $register_policy = REGISTER_OPEN;
 858                                                 break;
 859                                 }
 860                         }
 861                 }
 862         }
 863
 864         // Look for poco
 865         if (!$failure) {
 866                 $serverret = z_fetch_url($server_url."/poco");
 867                 if ($serverret["success"]) {
 868                         $data = json_decode($serverret["body"]);
 869                         if (isset($data->totalResults)) {
 870                                 $poco = $server_url."/poco";
 871                                 $last_contact = datetime_convert();
 872                         }
 873                 }
 874         }
 875
 876         // Check again if the server exists
 877         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 878
 879         if ($servers)
 880                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 881                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 882                         dbesc($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($last_contact),
 892                         dbesc($last_failure),
 893                         dbesc(normalise_link($server_url))
 894                 );
 895         else
 896                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 897                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 898                                 dbesc($server_url),
 899                                 dbesc(normalise_link($server_url)),
 900                                 dbesc($version),
 901                                 dbesc($site_name),
 902                                 dbesc($info),
 903                                 intval($register_policy),
 904                                 dbesc($poco),
 905                                 dbesc($noscrape),
 906                                 dbesc($network),
 907                                 dbesc($platform),
 908                                 dbesc(datetime_convert()),
 909                                 dbesc($last_contact),
 910                                 dbesc($last_failure),
 911                                 dbesc(datetime_convert())
 912                 );
 913
 914         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 915
 916         return !$failure;
 917 }
 918
 919 function poco_contact_from_body($body, $created, $cid, $uid) {
 920         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 921                 function ($match) use ($created, $cid, $uid){
 922                         return(sub_poco_from_share($match, $created, $cid, $uid));
 923                 }, $body);
 924 }
 925
 926 function sub_poco_from_share($share, $created, $cid, $uid) {
 927         $profile = "";
 928         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 929         if ($matches[1] != "")
 930                 $profile = $matches[1];
 931
 932         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 933         if ($matches[1] != "")
 934                 $profile = $matches[1];
 935
 936         if ($profile == "")
 937                 return;
 938
 939         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 940         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 941 }
 942
 943 function poco_store($item) {
 944
 945         // Isn't it public?
 946         if ($item['private'])
 947                 return;
 948
 949         // Or is it from a network where we don't store the global contacts?
 950         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 951                 return;
 952
 953         // Is it a global copy?
 954         $store_gcontact = ($item["uid"] == 0);
 955
 956         // Is it a comment on a global copy?
 957         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 958                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 959                 $store_gcontact = count($q);
 960         }
 961
 962         if (!$store_gcontact)
 963                 return;
 964
 965         // "3" means: We don't know this contact directly (Maybe a reshared item)
 966         $generation = 3;
 967         $network = "";
 968         $profile_url = $item["author-link"];
 969
 970         // Is it a user from our server?
 971         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 972                 dbesc(normalise_link($item["author-link"])));
 973         if (count($q)) {
 974                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 975                 $generation = 1;
 976                 $network = NETWORK_DFRN;
 977         } else { // Is it a contact from a user on our server?
 978                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 979                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 980                         dbesc(normalise_link($item["author-link"])),
 981                         dbesc(normalise_link($item["author-link"])),
 982                         dbesc($item["author-link"]),
 983                         dbesc(NETWORK_STATUSNET));
 984                 if (count($q)) {
 985                         $generation = 2;
 986                         $network = $q[0]["network"];
 987                         $profile_url = $q[0]["url"];
 988                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 989                 }
 990         }
 991
 992         if ($generation == 3)
 993                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 994
 995         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
 996
 997         // Maybe its a body with a shared item? Then extract a global contact from it.
 998         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
 999 }
1000
1001 function count_common_friends($uid,$cid) {
1002
1003         $r = q("SELECT count(*) as `total`
1004                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1005                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1006                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1007                 intval($cid),
1008                 intval($uid),
1009                 intval($uid),
1010                 intval($cid)
1011         );
1012
1013 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1014         if(count($r))
1015                 return $r[0]['total'];
1016         return 0;
1017
1018 }
1019
1020
1021 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1022
1023         if($shuffle)
1024                 $sql_extra = " order by rand() ";
1025         else
1026                 $sql_extra = " order by `gcontact`.`name` asc ";
1027
1028         $r = q("SELECT `gcontact`.*
1029                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1030                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1031                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
1032                 $sql_extra limit %d, %d",
1033                 intval($cid),
1034                 intval($uid),
1035                 intval($uid),
1036                 intval($cid),
1037                 intval($start),
1038                 intval($limit)
1039         );
1040
1041         return $r;
1042
1043 }
1044
1045
1046 function count_common_friends_zcid($uid,$zcid) {
1047
1048         $r = q("SELECT count(*) as `total`
1049                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1050                 where `glink`.`zcid` = %d
1051                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1052                 intval($zcid),
1053                 intval($uid)
1054         );
1055
1056         if(count($r))
1057                 return $r[0]['total'];
1058         return 0;
1059
1060 }
1061
1062 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1063
1064         if($shuffle)
1065                 $sql_extra = " order by rand() ";
1066         else
1067                 $sql_extra = " order by `gcontact`.`name` asc ";
1068
1069         $r = q("SELECT `gcontact`.*
1070                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1071                 where `glink`.`zcid` = %d
1072                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1073                 $sql_extra limit %d, %d",
1074                 intval($zcid),
1075                 intval($uid),
1076                 intval($start),
1077                 intval($limit)
1078         );
1079
1080         return $r;
1081
1082 }
1083
1084
1085 function count_all_friends($uid,$cid) {
1086
1087         $r = q("SELECT count(*) as `total`
1088                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1089                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1090                 intval($cid),
1091                 intval($uid)
1092         );
1093
1094         if(count($r))
1095                 return $r[0]['total'];
1096         return 0;
1097
1098 }
1099
1100
1101 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1102
1103         $r = q("SELECT `gcontact`.*
1104                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1105                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1106                 order by `gcontact`.`name` asc LIMIT %d, %d ",
1107                 intval($cid),
1108                 intval($uid),
1109                 intval($start),
1110                 intval($limit)
1111         );
1112
1113         return $r;
1114 }
1115
1116
1117
1118 function suggestion_query($uid, $start = 0, $limit = 80) {
1119
1120         if(! $uid)
1121                 return array();
1122
1123         $network = array(NETWORK_DFRN);
1124
1125         if (get_config('system','diaspora_enabled'))
1126                 $network[] = NETWORK_DIASPORA;
1127
1128         if (!get_config('system','ostatus_disabled'))
1129                 $network[] = NETWORK_OSTATUS;
1130
1131         $sql_network = implode("', '", $network);
1132         //$sql_network = "'".$sql_network."', ''";
1133         $sql_network = "'".$sql_network."'";
1134
1135         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1136                 INNER JOIN glink on glink.gcid = gcontact.id
1137                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1138                 and not gcontact.name in ( select name from contact where uid = %d )
1139                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1140                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1141                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1142                 AND `gcontact`.`network` IN (%s)
1143                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1144                 intval($uid),
1145                 intval($uid),
1146                 intval($uid),
1147                 intval($uid),
1148                 $sql_network,
1149                 intval($start),
1150                 intval($limit)
1151         );
1152
1153         if(count($r) && count($r) >= ($limit -1))
1154                 return $r;
1155
1156         $r2 = q("SELECT gcontact.* from gcontact
1157                 INNER JOIN glink on glink.gcid = gcontact.id
1158                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1159                 and not gcontact.name in ( select name from contact where uid = %d )
1160                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1161                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1162                 AND `gcontact`.`network` IN (%s)
1163                 order by rand() limit %d, %d ",
1164                 intval($uid),
1165                 intval($uid),
1166                 intval($uid),
1167                 $sql_network,
1168                 intval($start),
1169                 intval($limit)
1170         );
1171
1172         $list = array();
1173         foreach ($r2 AS $suggestion)
1174                 $list[$suggestion["nurl"]] = $suggestion;
1175
1176         foreach ($r AS $suggestion)
1177                 $list[$suggestion["nurl"]] = $suggestion;
1178
1179         return $list;
1180 }
1181
1182 function update_suggestions() {
1183
1184         $a = get_app();
1185
1186         $done = array();
1187
1188         // To-Do: Check if it is really neccessary to poll the own server
1189         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1190
1191         $done[] = $a->get_baseurl() . '/poco';
1192
1193         if(strlen(get_config('system','directory_submit_url'))) {
1194                 $x = fetch_url('http://dir.friendica.com/pubsites');
1195                 if($x) {
1196                         $j = json_decode($x);
1197                         if($j->entries) {
1198                                 foreach($j->entries as $entry) {
1199
1200                                         poco_check_server($entry->url);
1201
1202                                         $url = $entry->url . '/poco';
1203                                         if(! in_array($url,$done))
1204                                                 poco_load(0,0,0,$entry->url . '/poco');
1205                                 }
1206                         }
1207                 }
1208         }
1209
1210         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1211         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1212                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1213         );
1214
1215         if(count($r)) {
1216                 foreach($r as $rr) {
1217                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1218                         if(! in_array($base,$done))
1219                                 poco_load(0,0,0,$base);
1220                 }
1221         }
1222 }
1223
1224 function poco_discover($complete = false) {
1225
1226         $no_of_queries = 5;
1227
1228         $last_update = date("c", time() - (60 * 60 * 6)); // 24
1229         $last_update = date("c", time() - (60 * 60 * 24)); // 24
1230
1231         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` > `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1232         if ($r)
1233                 foreach ($r AS $server) {
1234
1235                         if (!poco_check_server($server["url"], $server["network"]))
1236                                 continue;
1237
1238                         // Fetch all users from the other server
1239                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1240
1241                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1242
1243                         $retdata = z_fetch_url($url);
1244                         if ($retdata["success"]) {
1245                                 $data = json_decode($retdata["body"]);
1246
1247                                 poco_discover_server($data, 2);
1248
1249                                 if (get_config('system','poco_discovery') > 1) {
1250
1251                                         $timeframe = get_config('system','poco_discovery_since');
1252                                         if ($timeframe == 0)
1253                                                 $timeframe = 30;
1254
1255                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1256
1257                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1258                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1259
1260                                         $success = false;
1261
1262                                         $retdata = z_fetch_url($url);
1263                                         if ($retdata["success"]) {
1264                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1265                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1266                                         }
1267
1268                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1269                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1270                                                 poco_discover_server_users($data, $server);
1271                                         }
1272                                 }
1273
1274                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1275                                 if (!$complete AND (--$no_of_queries == 0))
1276                                         break;
1277                         } else  // If the server hadn't replied correctly, then force a sanity check
1278                                 poco_check_server($server["url"], $server["network"], true);
1279                 }
1280 }
1281
1282 function poco_discover_server_users($data, $server) {
1283
1284         if (!isset($data->entry))
1285                 return;
1286
1287         foreach ($data->entry AS $entry) {
1288                 $username = "";
1289                 if (isset($entry->urls)) {
1290                         foreach($entry->urls as $url)
1291                                 if($url->type == 'profile') {
1292                                         $profile_url = $url->value;
1293                                         $urlparts = parse_url($profile_url);
1294                                         $username = end(explode("/", $urlparts["path"]));
1295                                 }
1296                 }
1297                 if ($username != "") {
1298                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1299
1300                         // Fetch all contacts from a given user from the other server
1301                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1302
1303                         $retdata = z_fetch_url($url);
1304                         if ($retdata["success"])
1305                                 poco_discover_server(json_decode($retdata["body"]), 3);
1306                 }
1307         }
1308 }
1309
1310 function poco_discover_server($data, $default_generation = 0) {
1311
1312         if (!isset($data->entry) OR !count($data->entry))
1313                 return false;
1314
1315         $success = false;
1316
1317         foreach ($data->entry AS $entry) {
1318                 $profile_url = '';
1319                 $profile_photo = '';
1320                 $connect_url = '';
1321                 $name = '';
1322                 $network = '';
1323                 $updated = '0000-00-00 00:00:00';
1324                 $location = '';
1325                 $about = '';
1326                 $keywords = '';
1327                 $gender = '';
1328                 $generation = $default_generation;
1329
1330                 $name = $entry->displayName;
1331
1332                 if(isset($entry->urls)) {
1333                         foreach($entry->urls as $url) {
1334                                 if($url->type == 'profile') {
1335                                         $profile_url = $url->value;
1336                                         continue;
1337                                 }
1338                                 if($url->type == 'webfinger') {
1339                                         $connect_url = str_replace('acct:' , '', $url->value);
1340                                         continue;
1341                                 }
1342                         }
1343                 }
1344
1345                 if(isset($entry->photos)) {
1346                         foreach($entry->photos as $photo) {
1347                                 if($photo->type == 'profile') {
1348                                         $profile_photo = $photo->value;
1349                                         continue;
1350                                 }
1351                         }
1352                 }
1353
1354                 if(isset($entry->updated))
1355                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1356
1357                 if(isset($entry->network))
1358                         $network = $entry->network;
1359
1360                 if(isset($entry->currentLocation))
1361                         $location = $entry->currentLocation;
1362
1363                 if(isset($entry->aboutMe))
1364                         $about = html2bbcode($entry->aboutMe);
1365
1366                 if(isset($entry->gender))
1367                         $gender = $entry->gender;
1368
1369                 if(isset($entry->generation) AND ($entry->generation > 0))
1370                         $generation = ++$entry->generation;
1371
1372                 if(isset($entry->tags))
1373                         foreach($entry->tags as $tag)
1374                                 $keywords = implode(", ", $tag);
1375
1376                 if ($generation > 0) {
1377                         $success = true;
1378
1379                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1380                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1381                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1382                 }
1383         }
1384         return $success;
1385 }
1386 ?>