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         $alternate = poco_alternate_ostatus_url($profile_url);
 175
 176         if ($profile_url == "")
 177                 return $gcid;
 178
 179         $urlparts = parse_url($profile_url);
 180         if (!isset($urlparts["scheme"]))
 181                 return $gcid;
 182
 183         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 184                                                 "identi.ca", "alpha.app.net")))
 185                 return $gcid;
 186
 187         $orig_updated = $updated;
 188
 189         // Don't store the statusnet connector as network
 190         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 191         if ($network == NETWORK_STATUSNET)
 192                 $network = "";
 193
 194         // The global contacts should contain the original picture, not the cached one
 195         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 196                 $profile_photo = "";
 197
 198         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 199                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 200         );
 201         if(count($r))
 202                 $network = $r[0]["network"];
 203
 204         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 205                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 206                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 207                 );
 208                 if(count($r)) {
 209                         $network = $r[0]["network"];
 210                         //$profile_url = $r[0]["url"];
 211                 }
 212         }
 213
 214         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 215                 dbesc(normalise_link($profile_url))
 216         );
 217
 218         if (count($x)) {
 219                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 220                         $network = $x[0]["network"];
 221
 222                 if ($updated == "0000-00-00 00:00:00")
 223                         $updated = $x[0]["updated"];
 224
 225                 $created = $x[0]["created"];
 226                 $server_url = $x[0]["server_url"];
 227                 $nick = $x[0]["nick"];
 228         } else {
 229                 $created = "0000-00-00 00:00:00";
 230                 $server_url = "";
 231
 232                 $urlparts = parse_url($profile_url);
 233                 $nick = end(explode("/", $urlparts["path"]));
 234         }
 235
 236         if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 237                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 238                 $data = probe_url($profile_url);
 239
 240                 $orig_profile = $profile_url;
 241
 242                 $network = $data["network"];
 243                 $name = $data["name"];
 244                 $nick = $data["nick"];
 245                 $profile_url = $data["url"];
 246                 $profile_photo = $data["photo"];
 247                 $server_url = $data["baseurl"];
 248
 249                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 250                         // Delete the old entry - if it exists
 251                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 252                         if ($r) {
 253                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 254                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 255                         }
 256
 257                         // possibly create a new entry
 258                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 259                 }
 260         }
 261
 262         if ($alternate AND ($network == NETWORK_OSTATUS))
 263                 return $gcid;
 264
 265         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 266                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 267                         dbesc($network),
 268                         dbesc(normalise_link($profile_url))
 269                 );
 270         }
 271
 272         if (($name == "") OR ($profile_photo == ""))
 273                 return $gcid;
 274
 275         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 276                 return $gcid;
 277
 278         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 279
 280         poco_check_server($server_url, $network);
 281
 282         if(count($x)) {
 283                 $gcid = $x[0]['id'];
 284
 285                 if (($location == "") AND ($x[0]['location'] != ""))
 286                         $location = $x[0]['location'];
 287
 288                 if (($about == "") AND ($x[0]['about'] != ""))
 289                         $about = $x[0]['about'];
 290
 291                 if (($gender == "") AND ($x[0]['gender'] != ""))
 292                         $gender = $x[0]['gender'];
 293
 294                 if (($keywords == "") AND ($x[0]['keywords'] != ""))
 295                         $keywords = $x[0]['keywords'];
 296
 297                 if (($generation == 0) AND ($x[0]['generation'] > 0))
 298                         $generation = $x[0]['generation'];
 299
 300                 if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
 301                         q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
 302                                 `updated` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
 303                                 WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
 304                                 dbesc($name),
 305                                 dbesc($network),
 306                                 dbesc($profile_photo),
 307                                 dbesc($connect_url),
 308                                 dbesc($profile_url),
 309                                 dbesc($server_url),
 310                                 dbesc($updated),
 311                                 dbesc($location),
 312                                 dbesc($about),
 313                                 dbesc($keywords),
 314                                 dbesc($gender),
 315                                 intval($generation),
 316                                 intval($generation),
 317                                 dbesc(normalise_link($profile_url))
 318                         );
 319                 }
 320         } else {
 321                 q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `location`, `about`, `keywords`, `gender`, `generation`)
 322                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 323                         dbesc($name),
 324                         dbesc($nick),
 325                         dbesc($network),
 326                         dbesc($profile_url),
 327                         dbesc(normalise_link($profile_url)),
 328                         dbesc($profile_photo),
 329                         dbesc($connect_url),
 330                         dbesc($server_url),
 331                         dbesc(datetime_convert()),
 332                         dbesc($updated),
 333                         dbesc($location),
 334                         dbesc($about),
 335                         dbesc($keywords),
 336                         dbesc($gender),
 337                         intval($generation)
 338                 );
 339                 $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 340                         dbesc(normalise_link($profile_url))
 341                 );
 342                 if(count($x))
 343                         $gcid = $x[0]['id'];
 344         }
 345
 346         if(! $gcid)
 347                 return $gcid;
 348
 349         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 350                 intval($cid),
 351                 intval($uid),
 352                 intval($gcid),
 353                 intval($zcid)
 354         );
 355         if(! count($r)) {
 356                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 357                         intval($cid),
 358                         intval($uid),
 359                         intval($gcid),
 360                         intval($zcid),
 361                         dbesc(datetime_convert())
 362                 );
 363         } else {
 364                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 365                         dbesc(datetime_convert()),
 366                         intval($cid),
 367                         intval($uid),
 368                         intval($gcid),
 369                         intval($zcid)
 370                 );
 371         }
 372
 373         // For unknown reasons there are sometimes duplicates
 374         q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
 375                 NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
 376                 dbesc(normalise_link($profile_url)),
 377                 intval($gcid)
 378         );
 379
 380         return $gcid;
 381 }
 382
 383 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 384
 385         if ($server == "")
 386                 $server = poco_detect_server($profile);
 387
 388         if ($server == "")
 389                 return true;
 390
 391         return poco_check_server($server, $network, $force);
 392 }
 393
 394 function poco_detect_server($profile) {
 395
 396         // Try to detect the server path based upon some known standard paths
 397         $server_url = "";
 398
 399         if ($server_url == "") {
 400                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 401                 if ($friendica != $profile) {
 402                         $server_url = $friendica;
 403                         $network = NETWORK_DFRN;
 404                 }
 405         }
 406
 407         if ($server_url == "") {
 408                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 409                 if ($diaspora != $profile) {
 410                         $server_url = $diaspora;
 411                         $network = NETWORK_DIASPORA;
 412                 }
 413         }
 414
 415         if ($server_url == "") {
 416                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 417                 if ($red != $profile) {
 418                         $server_url = $red;
 419                         $network = NETWORK_DIASPORA;
 420                 }
 421         }
 422
 423         return $server_url;
 424 }
 425
 426 function poco_alternate_ostatus_url($url) {
 427         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 428 }
 429
 430 function poco_last_updated($profile, $force = false) {
 431
 432         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 433                         dbesc(normalise_link($profile)));
 434
 435         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 436                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 437                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 438
 439         if ($gcontacts[0]["server_url"] != "")
 440                 $server_url = $gcontacts[0]["server_url"];
 441         else
 442                 $server_url = poco_detect_server($profile);
 443
 444         if ($server_url != "") {
 445                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 446
 447                         if ($force)
 448                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 449                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 450
 451                         return false;
 452                 }
 453
 454                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 455                         dbesc($server_url), dbesc(normalise_link($profile)));
 456         }
 457
 458         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 459                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 460                         dbesc(normalise_link($server_url)));
 461
 462                 if ($server)
 463                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 464                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 465                 else
 466                         return;
 467         }
 468
 469         // noscrape is really fast so we don't cache the call.
 470         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 471
 472                 //  Use noscrape if possible
 473                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 474
 475                 if ($server) {
 476                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 477
 478                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 479
 480                                 $noscrape = json_decode($noscraperet["body"], true);
 481
 482                                 if (($noscrape["fn"] != "") AND ($noscrape["fn"] != $gcontacts[0]["name"]))
 483                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 484                                                 dbesc($noscrape["fn"]), dbesc(normalise_link($profile)));
 485
 486                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 487                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 488                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 489
 490                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 491                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 492                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 493
 494                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 495                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 496                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 497
 498                                 if (($noscrape["pdesc"] != "") AND ($noscrape["pdesc"] != $gcontacts[0]["about"]))
 499                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 500                                                 dbesc($noscrape["pdesc"]), dbesc(normalise_link($profile)));
 501
 502                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["about"]))
 503                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 504                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 505
 506                                 if (isset($noscrape["comm"]) AND ($noscrape["comm"] != $gcontacts[0]["community"]))
 507                                         q("UPDATE `gcontact` SET `community` = %d WHERE `nurl` = '%s'",
 508                                                 intval($noscrape["comm"]), dbesc(normalise_link($profile)));
 509
 510                                 if (isset($noscrape["tags"]))
 511                                         $keywords = implode(" ", $noscrape["tags"]);
 512                                 else
 513                                         $keywords = "";
 514
 515                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 516                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 517                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 518
 519                                 $location = $noscrape["locality"];
 520
 521                                 if ($noscrape["region"] != "") {
 522                                         if ($location != "")
 523                                                 $location .= ", ";
 524
 525                                         $location .= $noscrape["region"];
 526                                 }
 527
 528                                 if ($noscrape["country-name"] != "") {
 529                                         if ($location != "")
 530                                                 $location .= ", ";
 531
 532                                         $location .= $noscrape["country-name"];
 533                                 }
 534
 535                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 536                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 537                                                 dbesc($location), dbesc(normalise_link($profile)));
 538
 539                                 // If we got data from noscrape then mark the contact as reachable
 540                                 if (is_array($noscrape) AND count($noscrape))
 541                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 542                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 543
 544                                 return $noscrape["updated"];
 545                         }
 546                 }
 547         }
 548
 549         // If we only can poll the feed, then we only do this once a while
 550         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 551                 return $gcontacts[0]["updated"];
 552
 553         $data = probe_url($profile);
 554
 555         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 556         // Then check the other link and delete this one
 557         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 558                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 559                 (normalise_link($profile) != normalise_link($data["url"]))) {
 560
 561                 // Delete the old entry
 562                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 563                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 564
 565                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 566                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 567
 568                 poco_last_updated($data["url"], $force);
 569
 570                 return false;
 571         }
 572
 573         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 574                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 575                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 576                 return false;
 577         }
 578
 579         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 580                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 581                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 582
 583         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 584                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 585                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 586
 587         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 588                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 589                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 590
 591         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 592                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 593                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 594
 595         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 596                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 597                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 598
 599         $feedret = z_fetch_url($data["poll"]);
 600
 601         if (!$feedret["success"]) {
 602                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 603                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 604                 return false;
 605         }
 606
 607         $doc = new DOMDocument();
 608         @$doc->loadXML($feedret["body"]);
 609
 610         $xpath = new DomXPath($doc);
 611         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 612
 613         $entries = $xpath->query('/atom:feed/atom:entry');
 614
 615         $last_updated = "";
 616
 617         foreach ($entries AS $entry) {
 618                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 619                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 620
 621                 if ($last_updated < $published)
 622                         $last_updated = $published;
 623
 624                 if ($last_updated < $updated)
 625                         $last_updated = $updated;
 626         }
 627
 628         // Maybe there aren't any entries. Then check if it is a valid feed
 629         if ($last_updated == "")
 630                 if ($xpath->query('/atom:feed')->length > 0)
 631                         $last_updated = "0000-00-00 00:00:00";
 632
 633         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 634                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 635
 636         if (($gcontacts[0]["generation"] == 0))
 637                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 638                         dbesc(normalise_link($profile)));
 639
 640         return($last_updated);
 641 }
 642
 643 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 644         $now = strtotime(datetime_convert());
 645
 646         if ($updated > $last_contact)
 647                 $contact_time = strtotime($updated);
 648         else
 649                 $contact_time = strtotime($last_contact);
 650
 651         $failure_time = strtotime($last_failure);
 652         $created_time = strtotime($created);
 653
 654         // If there is no "created" time then use the current time
 655         if ($created_time <= 0)
 656                 $created_time = $now;
 657
 658         // If the last contact was less than 24 hours then don't update
 659         if (($now - $contact_time) < (60 * 60 * 24))
 660                 return false;
 661
 662         // If the last failure was less than 24 hours then don't update
 663         if (($now - $failure_time) < (60 * 60 * 24))
 664                 return false;
 665
 666         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 667         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 668         //      return false;
 669
 670         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 671         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 672                 return false;
 673
 674         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 675         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 676                 return false;
 677
 678         return true;
 679 }
 680
 681 function poco_to_boolean($val) {
 682         if (($val == "true") OR ($val == 1))
 683                 return(true);
 684         if (($val == "false") OR ($val == 0))
 685                 return(false);
 686
 687         return ($val);
 688 }
 689
 690 function poco_check_server($server_url, $network = "", $force = false) {
 691
 692         if ($server_url == "")
 693                 return false;
 694
 695         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 696         if ($servers) {
 697
 698                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 699                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 700                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 701
 702                 $poco = $servers[0]["poco"];
 703                 $noscrape = $servers[0]["noscrape"];
 704
 705                 if ($network == "")
 706                         $network = $servers[0]["network"];
 707
 708                 $last_contact = $servers[0]["last_contact"];
 709                 $last_failure = $servers[0]["last_failure"];
 710                 $version = $servers[0]["version"];
 711                 $platform = $servers[0]["platform"];
 712                 $site_name = $servers[0]["site_name"];
 713                 $info = $servers[0]["info"];
 714                 $register_policy = $servers[0]["register_policy"];
 715
 716                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 717                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 718                         return ($last_contact >= $last_failure);
 719                 }
 720         } else {
 721                 $poco = "";
 722                 $noscrape = "";
 723                 $version = "";
 724                 $platform = "";
 725                 $site_name = "";
 726                 $info = "";
 727                 $register_policy = -1;
 728
 729                 $last_contact = "0000-00-00 00:00:00";
 730                 $last_failure = "0000-00-00 00:00:00";
 731         }
 732         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 733
 734         $failure = false;
 735         $orig_last_failure = $last_failure;
 736
 737         // Check if the page is accessible via SSL.
 738         $server_url = str_replace("http://", "https://", $server_url);
 739         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 740
 741         // Maybe the page is unencrypted only?
 742         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 743         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 744                 $server_url = str_replace("https://", "http://", $server_url);
 745                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 746
 747                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 748         }
 749
 750         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 751                 // Workaround for bad configured servers (known nginx problem)
 752                 if ($serverret["debug"]["http_code"] != "403") {
 753                         $last_failure = datetime_convert();
 754                         $failure = true;
 755                 }
 756         } elseif ($network == NETWORK_DIASPORA)
 757                 $last_contact = datetime_convert();
 758
 759         if (!$failure) {
 760                 // Test for Diaspora
 761                 $serverret = z_fetch_url($server_url);
 762
 763                 $lines = explode("\n",$serverret["header"]);
 764                 if(count($lines))
 765                         foreach($lines as $line) {
 766                                 $line = trim($line);
 767                                 if(stristr($line,'X-Diaspora-Version:')) {
 768                                         $platform = "Diaspora";
 769                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 770                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 771                                         $network = NETWORK_DIASPORA;
 772                                 }
 773                         }
 774         }
 775
 776         if (!$failure) {
 777                 // Test for Statusnet
 778                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 779                 // The "not implemented" is a special treatment for really, really old Friendica versions
 780                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 781                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 782                         $platform = "StatusNet";
 783                         $version = trim($serverret["body"], '"');
 784                         $network = NETWORK_OSTATUS;
 785                 }
 786
 787                 // Test for GNU Social
 788                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 789                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 790                         $platform = "GNU Social";
 791                         $version = trim($serverret["body"], '"');
 792                         $network = NETWORK_OSTATUS;
 793                 }
 794
 795                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 796                 if ($serverret["success"]) {
 797                         $data = json_decode($serverret["body"]);
 798
 799                         if (isset($data->site->server)) {
 800                                 $last_contact = datetime_convert();
 801
 802                                 if (isset($data->site->hubzilla)) {
 803                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 804                                         $version = $data->site->hubzilla->RED_VERSION;
 805                                         $network = NETWORK_DIASPORA;
 806                                 }
 807                                 if (isset($data->site->redmatrix)) {
 808                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 809                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 810                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 811                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 812
 813                                         $version = $data->site->redmatrix->RED_VERSION;
 814                                         $network = NETWORK_DIASPORA;
 815                                 }
 816                                 if (isset($data->site->friendica)) {
 817                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 818                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 819                                         $network = NETWORK_DFRN;
 820                                 }
 821
 822                                 $site_name = $data->site->name;
 823
 824                                 $data->site->closed = poco_to_boolean($data->site->closed);
 825                                 $data->site->private = poco_to_boolean($data->site->private);
 826                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 827
 828                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 829                                         $register_policy = REGISTER_APPROVE;
 830                                 elseif (!$data->site->closed AND !$data->site->private)
 831                                         $register_policy = REGISTER_OPEN;
 832                                 else
 833                                         $register_policy = REGISTER_CLOSED;
 834                         }
 835                 }
 836         }
 837
 838         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 839         if (!$failure) {
 840                 $serverret = z_fetch_url($server_url."/statistics.json");
 841                 if ($serverret["success"]) {
 842                         $data = json_decode($serverret["body"]);
 843                         if ($version == "")
 844                                 $version = $data->version;
 845
 846                         $site_name = $data->name;
 847
 848                         if (isset($data->network) AND ($platform == ""))
 849                                 $platform = $data->network;
 850
 851                         if ($platform == "Diaspora")
 852                                 $network = NETWORK_DIASPORA;
 853
 854                         if ($data->registrations_open)
 855                                 $register_policy = REGISTER_OPEN;
 856                         else
 857                                 $register_policy = REGISTER_CLOSED;
 858
 859                         if (isset($data->version))
 860                                 $last_contact = datetime_convert();
 861                 }
 862         }
 863
 864         // Check for noscrape
 865         // Friendica servers could be detected as OStatus servers
 866         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 867                 $serverret = z_fetch_url($server_url."/friendica/json");
 868
 869                 if (!$serverret["success"])
 870                         $serverret = z_fetch_url($server_url."/friendika/json");
 871
 872                 if ($serverret["success"]) {
 873                         $data = json_decode($serverret["body"]);
 874
 875                         if (isset($data->version)) {
 876                                 $last_contact = datetime_convert();
 877                                 $network = NETWORK_DFRN;
 878
 879                                 $noscrape = $data->no_scrape_url;
 880                                 $version = $data->version;
 881                                 $site_name = $data->site_name;
 882                                 $info = $data->info;
 883                                 $register_policy_str = $data->register_policy;
 884                                 $platform = $data->platform;
 885
 886                                 switch ($register_policy_str) {
 887                                         case "REGISTER_CLOSED":
 888                                                 $register_policy = REGISTER_CLOSED;
 889                                                 break;
 890                                         case "REGISTER_APPROVE":
 891                                                 $register_policy = REGISTER_APPROVE;
 892                                                 break;
 893                                         case "REGISTER_OPEN":
 894                                                 $register_policy = REGISTER_OPEN;
 895                                                 break;
 896                                 }
 897                         }
 898                 }
 899         }
 900
 901         // Look for poco
 902         if (!$failure) {
 903                 $serverret = z_fetch_url($server_url."/poco");
 904                 if ($serverret["success"]) {
 905                         $data = json_decode($serverret["body"]);
 906                         if (isset($data->totalResults)) {
 907                                 $poco = $server_url."/poco";
 908                                 $last_contact = datetime_convert();
 909                         }
 910                 }
 911         }
 912
 913         // Check again if the server exists
 914         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 915
 916         if ($servers)
 917                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 918                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 919                         dbesc($server_url),
 920                         dbesc($version),
 921                         dbesc($site_name),
 922                         dbesc($info),
 923                         intval($register_policy),
 924                         dbesc($poco),
 925                         dbesc($noscrape),
 926                         dbesc($network),
 927                         dbesc($platform),
 928                         dbesc($last_contact),
 929                         dbesc($last_failure),
 930                         dbesc(normalise_link($server_url))
 931                 );
 932         else
 933                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 934                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 935                                 dbesc($server_url),
 936                                 dbesc(normalise_link($server_url)),
 937                                 dbesc($version),
 938                                 dbesc($site_name),
 939                                 dbesc($info),
 940                                 intval($register_policy),
 941                                 dbesc($poco),
 942                                 dbesc($noscrape),
 943                                 dbesc($network),
 944                                 dbesc($platform),
 945                                 dbesc(datetime_convert()),
 946                                 dbesc($last_contact),
 947                                 dbesc($last_failure),
 948                                 dbesc(datetime_convert())
 949                 );
 950
 951         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 952
 953         return !$failure;
 954 }
 955
 956 function poco_contact_from_body($body, $created, $cid, $uid) {
 957         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 958                 function ($match) use ($created, $cid, $uid){
 959                         return(sub_poco_from_share($match, $created, $cid, $uid));
 960                 }, $body);
 961 }
 962
 963 function sub_poco_from_share($share, $created, $cid, $uid) {
 964         $profile = "";
 965         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 966         if ($matches[1] != "")
 967                 $profile = $matches[1];
 968
 969         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 970         if ($matches[1] != "")
 971                 $profile = $matches[1];
 972
 973         if ($profile == "")
 974                 return;
 975
 976         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 977         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 978 }
 979
 980 function poco_store($item) {
 981
 982         // Isn't it public?
 983         if ($item['private'])
 984                 return;
 985
 986         // Or is it from a network where we don't store the global contacts?
 987         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 988                 return;
 989
 990         // Is it a global copy?
 991         $store_gcontact = ($item["uid"] == 0);
 992
 993         // Is it a comment on a global copy?
 994         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 995                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 996                 $store_gcontact = count($q);
 997         }
 998
 999         if (!$store_gcontact)
1000                 return;
1001
1002         // "3" means: We don't know this contact directly (Maybe a reshared item)
1003         $generation = 3;
1004         $network = "";
1005         $profile_url = $item["author-link"];
1006
1007         // Is it a user from our server?
1008         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
1009                 dbesc(normalise_link($item["author-link"])));
1010         if (count($q)) {
1011                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
1012                 $generation = 1;
1013                 $network = NETWORK_DFRN;
1014         } else { // Is it a contact from a user on our server?
1015                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
1016                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
1017                         dbesc(normalise_link($item["author-link"])),
1018                         dbesc(normalise_link($item["author-link"])),
1019                         dbesc($item["author-link"]),
1020                         dbesc(NETWORK_STATUSNET));
1021                 if (count($q)) {
1022                         $generation = 2;
1023                         $network = $q[0]["network"];
1024                         $profile_url = $q[0]["url"];
1025                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
1026                 }
1027         }
1028
1029         if ($generation == 3)
1030                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
1031
1032         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
1033
1034         // Maybe its a body with a shared item? Then extract a global contact from it.
1035         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
1036 }
1037
1038 function count_common_friends($uid,$cid) {
1039
1040         $r = q("SELECT count(*) as `total`
1041                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1042                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1043                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1044                 intval($cid),
1045                 intval($uid),
1046                 intval($uid),
1047                 intval($cid)
1048         );
1049
1050 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1051         if(count($r))
1052                 return $r[0]['total'];
1053         return 0;
1054
1055 }
1056
1057
1058 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1059
1060         if($shuffle)
1061                 $sql_extra = " order by rand() ";
1062         else
1063                 $sql_extra = " order by `gcontact`.`name` asc ";
1064
1065         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1066                 FROM `glink`
1067                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
1068                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
1069                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
1070                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
1071                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
1072                         $sql_extra LIMIT %d, %d",
1073                 intval($cid),
1074                 intval($uid),
1075                 intval($uid),
1076                 intval($cid),
1077                 intval($start),
1078                 intval($limit)
1079         );
1080
1081         return $r;
1082
1083 }
1084
1085
1086 function count_common_friends_zcid($uid,$zcid) {
1087
1088         $r = q("SELECT count(*) as `total`
1089                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1090                 where `glink`.`zcid` = %d
1091                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1092                 intval($zcid),
1093                 intval($uid)
1094         );
1095
1096         if(count($r))
1097                 return $r[0]['total'];
1098         return 0;
1099
1100 }
1101
1102 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1103
1104         if($shuffle)
1105                 $sql_extra = " order by rand() ";
1106         else
1107                 $sql_extra = " order by `gcontact`.`name` asc ";
1108
1109         $r = q("SELECT `gcontact`.*
1110                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1111                 where `glink`.`zcid` = %d
1112                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1113                 $sql_extra limit %d, %d",
1114                 intval($zcid),
1115                 intval($uid),
1116                 intval($start),
1117                 intval($limit)
1118         );
1119
1120         return $r;
1121
1122 }
1123
1124
1125 function count_all_friends($uid,$cid) {
1126
1127         $r = q("SELECT count(*) as `total`
1128                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1129                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1130                 intval($cid),
1131                 intval($uid)
1132         );
1133
1134         if(count($r))
1135                 return $r[0]['total'];
1136         return 0;
1137
1138 }
1139
1140
1141 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1142
1143         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1144                 FROM `glink`
1145                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1146                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1147                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d
1148                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1149                 intval($uid),
1150                 intval($cid),
1151                 intval($uid),
1152                 intval($start),
1153                 intval($limit)
1154         );
1155
1156         return $r;
1157 }
1158
1159
1160
1161 function suggestion_query($uid, $start = 0, $limit = 80) {
1162
1163         if(! $uid)
1164                 return array();
1165
1166         $network = array(NETWORK_DFRN);
1167
1168         if (get_config('system','diaspora_enabled'))
1169                 $network[] = NETWORK_DIASPORA;
1170
1171         if (!get_config('system','ostatus_disabled'))
1172                 $network[] = NETWORK_OSTATUS;
1173
1174         $sql_network = implode("', '", $network);
1175         //$sql_network = "'".$sql_network."', ''";
1176         $sql_network = "'".$sql_network."'";
1177
1178         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1179                 INNER JOIN glink on glink.gcid = gcontact.id
1180                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1181                 and not gcontact.name in ( select name from contact where uid = %d )
1182                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1183                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1184                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1185                 AND `gcontact`.`network` IN (%s)
1186                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1187                 intval($uid),
1188                 intval($uid),
1189                 intval($uid),
1190                 intval($uid),
1191                 $sql_network,
1192                 intval($start),
1193                 intval($limit)
1194         );
1195
1196         if(count($r) && count($r) >= ($limit -1))
1197                 return $r;
1198
1199         $r2 = q("SELECT gcontact.* from gcontact
1200                 INNER JOIN glink on glink.gcid = gcontact.id
1201                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1202                 and not gcontact.name in ( select name from contact where uid = %d )
1203                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1204                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1205                 AND `gcontact`.`network` IN (%s)
1206                 order by rand() limit %d, %d ",
1207                 intval($uid),
1208                 intval($uid),
1209                 intval($uid),
1210                 $sql_network,
1211                 intval($start),
1212                 intval($limit)
1213         );
1214
1215         $list = array();
1216         foreach ($r2 AS $suggestion)
1217                 $list[$suggestion["nurl"]] = $suggestion;
1218
1219         foreach ($r AS $suggestion)
1220                 $list[$suggestion["nurl"]] = $suggestion;
1221
1222         return $list;
1223 }
1224
1225 function update_suggestions() {
1226
1227         $a = get_app();
1228
1229         $done = array();
1230
1231         // To-Do: Check if it is really neccessary to poll the own server
1232         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1233
1234         $done[] = $a->get_baseurl() . '/poco';
1235
1236         if(strlen(get_config('system','directory'))) {
1237                 $x = fetch_url(get_server()."/pubsites");
1238                 if($x) {
1239                         $j = json_decode($x);
1240                         if($j->entries) {
1241                                 foreach($j->entries as $entry) {
1242
1243                                         poco_check_server($entry->url);
1244
1245                                         $url = $entry->url . '/poco';
1246                                         if(! in_array($url,$done))
1247                                                 poco_load(0,0,0,$entry->url . '/poco');
1248                                 }
1249                         }
1250                 }
1251         }
1252
1253         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1254         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1255                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1256         );
1257
1258         if(count($r)) {
1259                 foreach($r as $rr) {
1260                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1261                         if(! in_array($base,$done))
1262                                 poco_load(0,0,0,$base);
1263                 }
1264         }
1265 }
1266
1267 function poco_discover_federation() {
1268         $last = get_config('poco','last_federation_discovery');
1269
1270         if($last) {
1271                 $next = $last + (24 * 60 * 60);
1272                 if($next > time())
1273                         return;
1274         }
1275
1276         $serverdata = fetch_url("http://the-federation.info/pods.json");
1277
1278         if (!$serverdata)
1279                 return;
1280
1281         $servers = json_decode($serverdata);
1282
1283         foreach($servers->pods AS $server)
1284                 poco_check_server("https://".$server->host);
1285
1286         set_config('poco','last_federation_discovery', time());
1287
1288 }
1289
1290 function poco_discover($complete = false) {
1291
1292         // Update the server list
1293         poco_discover_federation();
1294
1295         $no_of_queries = 5;
1296
1297         $requery_days = intval(get_config("system", "poco_requery_days"));
1298
1299         if ($requery_days == 0)
1300                 $requery_days = 7;
1301
1302         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1303
1304         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1305         if ($r)
1306                 foreach ($r AS $server) {
1307
1308                         if (!poco_check_server($server["url"], $server["network"])) {
1309                                 // The server is not reachable? Okay, then we will try it later
1310                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1311                                 continue;
1312                         }
1313
1314                         // Fetch all users from the other server
1315                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1316
1317                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1318
1319                         $retdata = z_fetch_url($url);
1320                         if ($retdata["success"]) {
1321                                 $data = json_decode($retdata["body"]);
1322
1323                                 poco_discover_server($data, 2);
1324
1325                                 if (get_config('system','poco_discovery') > 1) {
1326
1327                                         $timeframe = get_config('system','poco_discovery_since');
1328                                         if ($timeframe == 0)
1329                                                 $timeframe = 30;
1330
1331                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1332
1333                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1334                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1335
1336                                         $success = false;
1337
1338                                         $retdata = z_fetch_url($url);
1339                                         if ($retdata["success"]) {
1340                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1341                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1342                                         }
1343
1344                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1345                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1346                                                 poco_discover_server_users($data, $server);
1347                                         }
1348                                 }
1349
1350                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1351                                 if (!$complete AND (--$no_of_queries == 0))
1352                                         break;
1353                         } else {
1354                                 // If the server hadn't replied correctly, then force a sanity check
1355                                 poco_check_server($server["url"], $server["network"], true);
1356
1357                                 // If we couldn't reach the server, we will try it some time later
1358                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1359                         }
1360                 }
1361 }
1362
1363 function poco_discover_server_users($data, $server) {
1364
1365         if (!isset($data->entry))
1366                 return;
1367
1368         foreach ($data->entry AS $entry) {
1369                 $username = "";
1370                 if (isset($entry->urls)) {
1371                         foreach($entry->urls as $url)
1372                                 if($url->type == 'profile') {
1373                                         $profile_url = $url->value;
1374                                         $urlparts = parse_url($profile_url);
1375                                         $username = end(explode("/", $urlparts["path"]));
1376                                 }
1377                 }
1378                 if ($username != "") {
1379                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1380
1381                         // Fetch all contacts from a given user from the other server
1382                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1383
1384                         $retdata = z_fetch_url($url);
1385                         if ($retdata["success"])
1386                                 poco_discover_server(json_decode($retdata["body"]), 3);
1387                 }
1388         }
1389 }
1390
1391 function poco_discover_server($data, $default_generation = 0) {
1392
1393         if (!isset($data->entry) OR !count($data->entry))
1394                 return false;
1395
1396         $success = false;
1397
1398         foreach ($data->entry AS $entry) {
1399                 $profile_url = '';
1400                 $profile_photo = '';
1401                 $connect_url = '';
1402                 $name = '';
1403                 $network = '';
1404                 $updated = '0000-00-00 00:00:00';
1405                 $location = '';
1406                 $about = '';
1407                 $keywords = '';
1408                 $gender = '';
1409                 $generation = $default_generation;
1410
1411                 $name = $entry->displayName;
1412
1413                 if(isset($entry->urls)) {
1414                         foreach($entry->urls as $url) {
1415                                 if($url->type == 'profile') {
1416                                         $profile_url = $url->value;
1417                                         continue;
1418                                 }
1419                                 if($url->type == 'webfinger') {
1420                                         $connect_url = str_replace('acct:' , '', $url->value);
1421                                         continue;
1422                                 }
1423                         }
1424                 }
1425
1426                 if(isset($entry->photos)) {
1427                         foreach($entry->photos as $photo) {
1428                                 if($photo->type == 'profile') {
1429                                         $profile_photo = $photo->value;
1430                                         continue;
1431                                 }
1432                         }
1433                 }
1434
1435                 if(isset($entry->updated))
1436                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1437
1438                 if(isset($entry->network))
1439                         $network = $entry->network;
1440
1441                 if(isset($entry->currentLocation))
1442                         $location = $entry->currentLocation;
1443
1444                 if(isset($entry->aboutMe))
1445                         $about = html2bbcode($entry->aboutMe);
1446
1447                 if(isset($entry->gender))
1448                         $gender = $entry->gender;
1449
1450                 if(isset($entry->generation) AND ($entry->generation > 0))
1451                         $generation = ++$entry->generation;
1452
1453                 if(isset($entry->tags))
1454                         foreach($entry->tags as $tag)
1455                                 $keywords = implode(", ", $tag);
1456
1457                 if ($generation > 0) {
1458                         $success = true;
1459
1460                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1461                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1462                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1463                 }
1464         }
1465         return $success;
1466 }
1467 ?>