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         if ($gcontacts[0]["server_url"] != "")
 417                 $server_url = $gcontacts[0]["server_url"];
 418         else
 419                 $server_url = poco_detect_server($profile);
 420
 421         if ($server_url != "") {
 422                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 423
 424                         if ($force)
 425                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 426                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 427
 428                         return false;
 429                 }
 430
 431                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 432                         dbesc($server_url), dbesc(normalise_link($profile)));
 433         }
 434
 435         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 436                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 437                         dbesc(normalise_link($server_url)));
 438
 439                 if ($server)
 440                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 441                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 442                 else
 443                         return;
 444         }
 445
 446         // noscrape is really fast so we don't cache the call.
 447         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 448
 449                 //  Use noscrape if possible
 450                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 451
 452                 if ($server) {
 453                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 454
 455                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 456 ;
 457                                 $noscrape = json_decode($noscraperet["body"], true);
 458
 459                                 if (($noscrape["fn"] != "") AND ($noscrape["fn"] != $gcontacts[0]["name"]))
 460                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 461                                                 dbesc($noscrape["fn"]), dbesc(normalise_link($profile)));
 462
 463                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 464                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 465                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 466
 467                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 468                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 469                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 470
 471                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 472                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 473                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 474
 475                                 if (($noscrape["pdesc"] != "") AND ($noscrape["pdesc"] != $gcontacts[0]["about"]))
 476                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 477                                                 dbesc($noscrape["pdesc"]), dbesc(normalise_link($profile)));
 478
 479                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["about"]))
 480                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 481                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 482
 483                                 if (isset($noscrape["comm"]) AND ($noscrape["comm"] != $gcontacts[0]["community"]))
 484                                         q("UPDATE `gcontact` SET `community` = %d WHERE `nurl` = '%s'",
 485                                                 intval($noscrape["comm"]), dbesc(normalise_link($profile)));
 486
 487                                 if (isset($noscrape["tags"]))
 488                                         $keywords = implode(" ", $noscrape["tags"]);
 489                                 else
 490                                         $keywords = "";
 491
 492                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 493                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 494                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 495
 496                                 $location = $noscrape["locality"];
 497
 498                                 if ($noscrape["region"] != "") {
 499                                         if ($location != "")
 500                                                 $location .= ", ";
 501
 502                                         $location .= $noscrape["region"];
 503                                 }
 504
 505                                 if ($noscrape["country-name"] != "") {
 506                                         if ($location != "")
 507                                                 $location .= ", ";
 508
 509                                         $location .= $noscrape["country-name"];
 510                                 }
 511
 512                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 513                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 514                                                 dbesc($location), dbesc(normalise_link($profile)));
 515
 516                                 // If we got data from noscrape then mark the contact as reachable
 517                                 if (is_array($noscrape) AND count($noscrape))
 518                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 519                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 520
 521                                 return $noscrape["updated"];
 522                         }
 523                 }
 524         }
 525
 526         // If we only can poll the feed, then we only do this once a while
 527         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 528                 return $gcontacts[0]["updated"];
 529
 530         $data = probe_url($profile);
 531
 532         if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
 533                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 534                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 535                 return false;
 536         }
 537
 538         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 539                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 540                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 541
 542         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 543                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 544                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 545
 546         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 547                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 548                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 549
 550         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 551                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 552                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 553
 554         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 555                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 556                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 557
 558         $feedret = z_fetch_url($data["poll"]);
 559
 560         if (!$feedret["success"]) {
 561                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 562                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 563                 return false;
 564         }
 565
 566         $doc = new DOMDocument();
 567         @$doc->loadXML($feedret["body"]);
 568
 569         $xpath = new DomXPath($doc);
 570         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 571
 572         $entries = $xpath->query('/atom:feed/atom:entry');
 573
 574         $last_updated = "";
 575
 576         foreach ($entries AS $entry) {
 577                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 578                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 579
 580                 if ($last_updated < $published)
 581                         $last_updated = $published;
 582
 583                 if ($last_updated < $updated)
 584                         $last_updated = $updated;
 585         }
 586
 587         // Maybe there aren't any entries. Then check if it is a valid feed
 588         if ($last_updated == "")
 589                 if ($xpath->query('/atom:feed')->length > 0)
 590                         $last_updated = "0000-00-00 00:00:00";
 591
 592         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 593                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 594
 595         if (($gcontacts[0]["generation"] == 0))
 596                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 597                         dbesc(normalise_link($profile)));
 598
 599         return($last_updated);
 600 }
 601
 602 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 603         $now = strtotime(datetime_convert());
 604
 605         if ($updated > $last_contact)
 606                 $contact_time = strtotime($updated);
 607         else
 608                 $contact_time = strtotime($last_contact);
 609
 610         $failure_time = strtotime($last_failure);
 611         $created_time = strtotime($created);
 612
 613         // If there is no "created" time then use the current time
 614         if ($created_time <= 0)
 615                 $created_time = $now;
 616
 617         // If the last contact was less than 24 hours then don't update
 618         if (($now - $contact_time) < (60 * 60 * 24))
 619                 return false;
 620
 621         // If the last failure was less than 24 hours then don't update
 622         if (($now - $failure_time) < (60 * 60 * 24))
 623                 return false;
 624
 625         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 626         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 627         //      return false;
 628
 629         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 630         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 631                 return false;
 632
 633         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 634         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 635                 return false;
 636
 637         return true;
 638 }
 639
 640 function poco_to_boolean($val) {
 641         if (($val == "true") OR ($val == 1))
 642                 return(true);
 643         if (($val == "false") OR ($val == 0))
 644                 return(false);
 645
 646         return ($val);
 647 }
 648
 649 function poco_check_server($server_url, $network = "", $force = false) {
 650
 651         if ($server_url == "")
 652                 return false;
 653
 654         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 655         if ($servers) {
 656
 657                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 658                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 659                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 660
 661                 $poco = $servers[0]["poco"];
 662                 $noscrape = $servers[0]["noscrape"];
 663
 664                 if ($network == "")
 665                         $network = $servers[0]["network"];
 666
 667                 $last_contact = $servers[0]["last_contact"];
 668                 $last_failure = $servers[0]["last_failure"];
 669                 $version = $servers[0]["version"];
 670                 $platform = $servers[0]["platform"];
 671                 $site_name = $servers[0]["site_name"];
 672                 $info = $servers[0]["info"];
 673                 $register_policy = $servers[0]["register_policy"];
 674
 675                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 676                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 677                         return ($last_contact >= $last_failure);
 678                 }
 679         } else {
 680                 $poco = "";
 681                 $noscrape = "";
 682                 $version = "";
 683                 $platform = "";
 684                 $site_name = "";
 685                 $info = "";
 686                 $register_policy = -1;
 687
 688                 $last_contact = "0000-00-00 00:00:00";
 689                 $last_failure = "0000-00-00 00:00:00";
 690         }
 691         logger("Server ".$server_url." is unknown. Start discovery.", LOGGER_DEBUG);
 692
 693         $failure = false;
 694         $orig_last_failure = $last_failure;
 695
 696         // Check if the page is accessible via SSL.
 697         $server_url = str_replace("http://", "https://", $server_url);
 698         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 699
 700         // Maybe the page is unencrypted only?
 701         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 702         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 703                 $server_url = str_replace("https://", "http://", $server_url);
 704                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 705
 706                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 707         }
 708
 709         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 710                 $last_failure = datetime_convert();
 711                 $failure = true;
 712         } elseif ($network == NETWORK_DIASPORA)
 713                 $last_contact = datetime_convert();
 714
 715         if (!$failure) {
 716                 // Test for Diaspora
 717                 $serverret = z_fetch_url($server_url);
 718
 719                 $lines = explode("\n",$serverret["header"]);
 720                 if(count($lines))
 721                         foreach($lines as $line) {
 722                                 $line = trim($line);
 723                                 if(stristr($line,'X-Diaspora-Version:')) {
 724                                         $platform = "Diaspora";
 725                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 726                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 727                                         $network = NETWORK_DIASPORA;
 728                                 }
 729                         }
 730         }
 731
 732         if (!$failure) {
 733                 // Test for Statusnet
 734                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 735                 // The "not implemented" is a special treatment for really, really old Friendica versions
 736                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 737                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 738                         $platform = "StatusNet";
 739                         $version = trim($serverret["body"], '"');
 740                         $network = NETWORK_OSTATUS;
 741                 }
 742
 743                 // Test for GNU Social
 744                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 745                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 746                         $platform = "GNU Social";
 747                         $version = trim($serverret["body"], '"');
 748                         $network = NETWORK_OSTATUS;
 749                 }
 750
 751                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 752                 if ($serverret["success"]) {
 753                         $data = json_decode($serverret["body"]);
 754
 755                         if (isset($data->site->server)) {
 756                                 $last_contact = datetime_convert();
 757
 758                                 if (isset($data->site->hubzilla)) {
 759                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 760                                         $version = $data->site->hubzilla->RED_VERSION;
 761                                         $network = NETWORK_DIASPORA;
 762                                 }
 763                                 if (isset($data->site->redmatrix)) {
 764                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 765                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 766                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 767                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 768
 769                                         $version = $data->site->redmatrix->RED_VERSION;
 770                                         $network = NETWORK_DIASPORA;
 771                                 }
 772                                 if (isset($data->site->friendica)) {
 773                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 774                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 775                                         $network = NETWORK_DFRN;
 776                                 }
 777
 778                                 $site_name = $data->site->name;
 779
 780                                 $data->site->closed = poco_to_boolean($data->site->closed);
 781                                 $data->site->private = poco_to_boolean($data->site->private);
 782                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 783
 784                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 785                                         $register_policy = REGISTER_APPROVE;
 786                                 elseif (!$data->site->closed AND !$data->site->private)
 787                                         $register_policy = REGISTER_OPEN;
 788                                 else
 789                                         $register_policy = REGISTER_CLOSED;
 790                         }
 791                 }
 792         }
 793
 794         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 795         if (!$failure) {
 796                 $serverret = z_fetch_url($server_url."/statistics.json");
 797                 if ($serverret["success"]) {
 798                         $data = json_decode($serverret["body"]);
 799                         if ($version == "")
 800                                 $version = $data->version;
 801
 802                         $site_name = $data->name;
 803
 804                         if (isset($data->network) AND ($platform == ""))
 805                                 $platform = $data->network;
 806
 807                         if ($platform == "Diaspora")
 808                                 $network = NETWORK_DIASPORA;
 809
 810                         if ($data->registrations_open)
 811                                 $register_policy = REGISTER_OPEN;
 812                         else
 813                                 $register_policy = REGISTER_CLOSED;
 814
 815                         if (isset($data->version))
 816                                 $last_contact = datetime_convert();
 817                 }
 818         }
 819
 820         // Check for noscrape
 821         // Friendica servers could be detected as OStatus servers
 822         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 823                 $serverret = z_fetch_url($server_url."/friendica/json");
 824
 825                 if (!$serverret["success"])
 826                         $serverret = z_fetch_url($server_url."/friendika/json");
 827
 828                 if ($serverret["success"]) {
 829                         $data = json_decode($serverret["body"]);
 830
 831                         if (isset($data->version)) {
 832                                 $last_contact = datetime_convert();
 833                                 $network = NETWORK_DFRN;
 834
 835                                 $noscrape = $data->no_scrape_url;
 836                                 $version = $data->version;
 837                                 $site_name = $data->site_name;
 838                                 $info = $data->info;
 839                                 $register_policy_str = $data->register_policy;
 840                                 $platform = $data->platform;
 841
 842                                 switch ($register_policy_str) {
 843                                         case "REGISTER_CLOSED":
 844                                                 $register_policy = REGISTER_CLOSED;
 845                                                 break;
 846                                         case "REGISTER_APPROVE":
 847                                                 $register_policy = REGISTER_APPROVE;
 848                                                 break;
 849                                         case "REGISTER_OPEN":
 850                                                 $register_policy = REGISTER_OPEN;
 851                                                 break;
 852                                 }
 853                         }
 854                 }
 855         }
 856
 857         // Look for poco
 858         if (!$failure) {
 859                 $serverret = z_fetch_url($server_url."/poco");
 860                 if ($serverret["success"]) {
 861                         $data = json_decode($serverret["body"]);
 862                         if (isset($data->totalResults)) {
 863                                 $poco = $server_url."/poco";
 864                                 $last_contact = datetime_convert();
 865                         }
 866                 }
 867         }
 868
 869         // Check again if the server exists
 870         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 871
 872         if ($servers)
 873                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 874                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 875                         dbesc($server_url),
 876                         dbesc($version),
 877                         dbesc($site_name),
 878                         dbesc($info),
 879                         intval($register_policy),
 880                         dbesc($poco),
 881                         dbesc($noscrape),
 882                         dbesc($network),
 883                         dbesc($platform),
 884                         dbesc($last_contact),
 885                         dbesc($last_failure),
 886                         dbesc(normalise_link($server_url))
 887                 );
 888         else
 889                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 890                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 891                                 dbesc($server_url),
 892                                 dbesc(normalise_link($server_url)),
 893                                 dbesc($version),
 894                                 dbesc($site_name),
 895                                 dbesc($info),
 896                                 intval($register_policy),
 897                                 dbesc($poco),
 898                                 dbesc($noscrape),
 899                                 dbesc($network),
 900                                 dbesc($platform),
 901                                 dbesc(datetime_convert()),
 902                                 dbesc($last_contact),
 903                                 dbesc($last_failure),
 904                                 dbesc(datetime_convert())
 905                 );
 906
 907         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 908
 909         return !$failure;
 910 }
 911
 912 function poco_contact_from_body($body, $created, $cid, $uid) {
 913         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 914                 function ($match) use ($created, $cid, $uid){
 915                         return(sub_poco_from_share($match, $created, $cid, $uid));
 916                 }, $body);
 917 }
 918
 919 function sub_poco_from_share($share, $created, $cid, $uid) {
 920         $profile = "";
 921         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 922         if ($matches[1] != "")
 923                 $profile = $matches[1];
 924
 925         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 926         if ($matches[1] != "")
 927                 $profile = $matches[1];
 928
 929         if ($profile == "")
 930                 return;
 931
 932         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 933         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 934 }
 935
 936 function poco_store($item) {
 937
 938         // Isn't it public?
 939         if ($item['private'])
 940                 return;
 941
 942         // Or is it from a network where we don't store the global contacts?
 943         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 944                 return;
 945
 946         // Is it a global copy?
 947         $store_gcontact = ($item["uid"] == 0);
 948
 949         // Is it a comment on a global copy?
 950         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 951                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 952                 $store_gcontact = count($q);
 953         }
 954
 955         if (!$store_gcontact)
 956                 return;
 957
 958         // "3" means: We don't know this contact directly (Maybe a reshared item)
 959         $generation = 3;
 960         $network = "";
 961         $profile_url = $item["author-link"];
 962
 963         // Is it a user from our server?
 964         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 965                 dbesc(normalise_link($item["author-link"])));
 966         if (count($q)) {
 967                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 968                 $generation = 1;
 969                 $network = NETWORK_DFRN;
 970         } else { // Is it a contact from a user on our server?
 971                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 972                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 973                         dbesc(normalise_link($item["author-link"])),
 974                         dbesc(normalise_link($item["author-link"])),
 975                         dbesc($item["author-link"]),
 976                         dbesc(NETWORK_STATUSNET));
 977                 if (count($q)) {
 978                         $generation = 2;
 979                         $network = $q[0]["network"];
 980                         $profile_url = $q[0]["url"];
 981                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 982                 }
 983         }
 984
 985         if ($generation == 3)
 986                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 987
 988         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
 989
 990         // Maybe its a body with a shared item? Then extract a global contact from it.
 991         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
 992 }
 993
 994 function count_common_friends($uid,$cid) {
 995
 996         $r = q("SELECT count(*) as `total`
 997                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 998                 where `glink`.`cid` = %d and `glink`.`uid` = %d
 999                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1000                 intval($cid),
1001                 intval($uid),
1002                 intval($uid),
1003                 intval($cid)
1004         );
1005
1006 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1007         if(count($r))
1008                 return $r[0]['total'];
1009         return 0;
1010
1011 }
1012
1013
1014 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1015
1016         if($shuffle)
1017                 $sql_extra = " order by rand() ";
1018         else
1019                 $sql_extra = " order by `gcontact`.`name` asc ";
1020
1021         $r = q("SELECT `gcontact`.*
1022                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1023                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1024                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
1025                 $sql_extra limit %d, %d",
1026                 intval($cid),
1027                 intval($uid),
1028                 intval($uid),
1029                 intval($cid),
1030                 intval($start),
1031                 intval($limit)
1032         );
1033
1034         return $r;
1035
1036 }
1037
1038
1039 function count_common_friends_zcid($uid,$zcid) {
1040
1041         $r = q("SELECT count(*) as `total`
1042                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1043                 where `glink`.`zcid` = %d
1044                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1045                 intval($zcid),
1046                 intval($uid)
1047         );
1048
1049         if(count($r))
1050                 return $r[0]['total'];
1051         return 0;
1052
1053 }
1054
1055 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1056
1057         if($shuffle)
1058                 $sql_extra = " order by rand() ";
1059         else
1060                 $sql_extra = " order by `gcontact`.`name` asc ";
1061
1062         $r = q("SELECT `gcontact`.*
1063                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1064                 where `glink`.`zcid` = %d
1065                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1066                 $sql_extra limit %d, %d",
1067                 intval($zcid),
1068                 intval($uid),
1069                 intval($start),
1070                 intval($limit)
1071         );
1072
1073         return $r;
1074
1075 }
1076
1077
1078 function count_all_friends($uid,$cid) {
1079
1080         $r = q("SELECT count(*) as `total`
1081                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1082                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1083                 intval($cid),
1084                 intval($uid)
1085         );
1086
1087         if(count($r))
1088                 return $r[0]['total'];
1089         return 0;
1090
1091 }
1092
1093
1094 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1095
1096         $r = q("SELECT `gcontact`.*
1097                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1098                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1099                 order by `gcontact`.`name` asc LIMIT %d, %d ",
1100                 intval($cid),
1101                 intval($uid),
1102                 intval($start),
1103                 intval($limit)
1104         );
1105
1106         return $r;
1107 }
1108
1109
1110
1111 function suggestion_query($uid, $start = 0, $limit = 80) {
1112
1113         if(! $uid)
1114                 return array();
1115
1116         $network = array(NETWORK_DFRN);
1117
1118         if (get_config('system','diaspora_enabled'))
1119                 $network[] = NETWORK_DIASPORA;
1120
1121         if (!get_config('system','ostatus_disabled'))
1122                 $network[] = NETWORK_OSTATUS;
1123
1124         $sql_network = implode("', '", $network);
1125         //$sql_network = "'".$sql_network."', ''";
1126         $sql_network = "'".$sql_network."'";
1127
1128         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1129                 INNER JOIN glink on glink.gcid = gcontact.id
1130                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1131                 and not gcontact.name in ( select name from contact where uid = %d )
1132                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1133                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1134                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1135                 AND `gcontact`.`network` IN (%s)
1136                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1137                 intval($uid),
1138                 intval($uid),
1139                 intval($uid),
1140                 intval($uid),
1141                 $sql_network,
1142                 intval($start),
1143                 intval($limit)
1144         );
1145
1146         if(count($r) && count($r) >= ($limit -1))
1147                 return $r;
1148
1149         $r2 = q("SELECT gcontact.* from gcontact
1150                 INNER JOIN glink on glink.gcid = gcontact.id
1151                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1152                 and not gcontact.name in ( select name from contact where uid = %d )
1153                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1154                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1155                 AND `gcontact`.`network` IN (%s)
1156                 order by rand() limit %d, %d ",
1157                 intval($uid),
1158                 intval($uid),
1159                 intval($uid),
1160                 $sql_network,
1161                 intval($start),
1162                 intval($limit)
1163         );
1164
1165         $list = array();
1166         foreach ($r2 AS $suggestion)
1167                 $list[$suggestion["nurl"]] = $suggestion;
1168
1169         foreach ($r AS $suggestion)
1170                 $list[$suggestion["nurl"]] = $suggestion;
1171
1172         return $list;
1173 }
1174
1175 function update_suggestions() {
1176
1177         $a = get_app();
1178
1179         $done = array();
1180
1181         // To-Do: Check if it is really neccessary to poll the own server
1182         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1183
1184         $done[] = $a->get_baseurl() . '/poco';
1185
1186         if(strlen(get_config('system','directory_submit_url'))) {
1187                 $x = fetch_url(get_server()."/pubsites");
1188                 if($x) {
1189                         $j = json_decode($x);
1190                         if($j->entries) {
1191                                 foreach($j->entries as $entry) {
1192
1193                                         poco_check_server($entry->url);
1194
1195                                         $url = $entry->url . '/poco';
1196                                         if(! in_array($url,$done))
1197                                                 poco_load(0,0,0,$entry->url . '/poco');
1198                                 }
1199                         }
1200                 }
1201         }
1202
1203         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1204         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1205                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1206         );
1207
1208         if(count($r)) {
1209                 foreach($r as $rr) {
1210                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1211                         if(! in_array($base,$done))
1212                                 poco_load(0,0,0,$base);
1213                 }
1214         }
1215 }
1216
1217 function poco_discover($complete = false) {
1218
1219         $no_of_queries = 5;
1220
1221         $last_update = date("c", time() - (60 * 60 * 6)); // 24
1222         $last_update = date("c", time() - (60 * 60 * 24)); // 24
1223
1224         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1225         if ($r)
1226                 foreach ($r AS $server) {
1227
1228                         if (!poco_check_server($server["url"], $server["network"]))
1229                                 continue;
1230
1231                         // Fetch all users from the other server
1232                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1233
1234                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1235
1236                         $retdata = z_fetch_url($url);
1237                         if ($retdata["success"]) {
1238                                 $data = json_decode($retdata["body"]);
1239
1240                                 poco_discover_server($data, 2);
1241
1242                                 if (get_config('system','poco_discovery') > 1) {
1243
1244                                         $timeframe = get_config('system','poco_discovery_since');
1245                                         if ($timeframe == 0)
1246                                                 $timeframe = 30;
1247
1248                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1249
1250                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1251                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1252
1253                                         $success = false;
1254
1255                                         $retdata = z_fetch_url($url);
1256                                         if ($retdata["success"]) {
1257                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1258                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1259                                         }
1260
1261                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1262                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1263                                                 poco_discover_server_users($data, $server);
1264                                         }
1265                                 }
1266
1267                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1268                                 if (!$complete AND (--$no_of_queries == 0))
1269                                         break;
1270                         } else  // If the server hadn't replied correctly, then force a sanity check
1271                                 poco_check_server($server["url"], $server["network"], true);
1272                 }
1273 }
1274
1275 function poco_discover_server_users($data, $server) {
1276
1277         if (!isset($data->entry))
1278                 return;
1279
1280         foreach ($data->entry AS $entry) {
1281                 $username = "";
1282                 if (isset($entry->urls)) {
1283                         foreach($entry->urls as $url)
1284                                 if($url->type == 'profile') {
1285                                         $profile_url = $url->value;
1286                                         $urlparts = parse_url($profile_url);
1287                                         $username = end(explode("/", $urlparts["path"]));
1288                                 }
1289                 }
1290                 if ($username != "") {
1291                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1292
1293                         // Fetch all contacts from a given user from the other server
1294                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1295
1296                         $retdata = z_fetch_url($url);
1297                         if ($retdata["success"])
1298                                 poco_discover_server(json_decode($retdata["body"]), 3);
1299                 }
1300         }
1301 }
1302
1303 function poco_discover_server($data, $default_generation = 0) {
1304
1305         if (!isset($data->entry) OR !count($data->entry))
1306                 return false;
1307
1308         $success = false;
1309
1310         foreach ($data->entry AS $entry) {
1311                 $profile_url = '';
1312                 $profile_photo = '';
1313                 $connect_url = '';
1314                 $name = '';
1315                 $network = '';
1316                 $updated = '0000-00-00 00:00:00';
1317                 $location = '';
1318                 $about = '';
1319                 $keywords = '';
1320                 $gender = '';
1321                 $generation = $default_generation;
1322
1323                 $name = $entry->displayName;
1324
1325                 if(isset($entry->urls)) {
1326                         foreach($entry->urls as $url) {
1327                                 if($url->type == 'profile') {
1328                                         $profile_url = $url->value;
1329                                         continue;
1330                                 }
1331                                 if($url->type == 'webfinger') {
1332                                         $connect_url = str_replace('acct:' , '', $url->value);
1333                                         continue;
1334                                 }
1335                         }
1336                 }
1337
1338                 if(isset($entry->photos)) {
1339                         foreach($entry->photos as $photo) {
1340                                 if($photo->type == 'profile') {
1341                                         $profile_photo = $photo->value;
1342                                         continue;
1343                                 }
1344                         }
1345                 }
1346
1347                 if(isset($entry->updated))
1348                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1349
1350                 if(isset($entry->network))
1351                         $network = $entry->network;
1352
1353                 if(isset($entry->currentLocation))
1354                         $location = $entry->currentLocation;
1355
1356                 if(isset($entry->aboutMe))
1357                         $about = html2bbcode($entry->aboutMe);
1358
1359                 if(isset($entry->gender))
1360                         $gender = $entry->gender;
1361
1362                 if(isset($entry->generation) AND ($entry->generation > 0))
1363                         $generation = ++$entry->generation;
1364
1365                 if(isset($entry->tags))
1366                         foreach($entry->tags as $tag)
1367                                 $keywords = implode(", ", $tag);
1368
1369                 if ($generation > 0) {
1370                         $success = true;
1371
1372                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1373                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1374                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1375                 }
1376         }
1377         return $success;
1378 }
1379 ?>