include/socgraph.php

   1 <?php
   2 /**
   3  * @file include/socgraph.php
   4  *
   5  * @todo Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
   6  * @todo Fetch profile data from profile page for Redmatrix users
   7  * @todo Detect if it is a forum
   8  */
   9
  10 require_once('include/datetime.php');
  11 require_once("include/Scrape.php");
  12 require_once("include/html2bbcode.php");
  13
  14
  15 /*
  16  * poco_load
  17  *
  18  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  19  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  20  * if anything (name or photo) has changed.
  21  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  22  *
  23  * Once the global contact is stored add (if necessary) the contact linkage which associates
  24  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  25  * pointing to the same global contact id.
  26  *
  27  */
  28
  29
  30
  31
  32 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  33
  34         $a = get_app();
  35
  36         if($cid) {
  37                 if((! $url) || (! $uid)) {
  38                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  39                                 intval($cid)
  40                         );
  41                         if(count($r)) {
  42                                 $url = $r[0]['poco'];
  43                                 $uid = $r[0]['uid'];
  44                         }
  45                 }
  46                 if(! $uid)
  47                         return;
  48         }
  49
  50         if(! $url)
  51                 return;
  52
  53         $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') ;
  54
  55         logger('poco_load: ' . $url, LOGGER_DEBUG);
  56
  57         $s = fetch_url($url);
  58
  59         logger('poco_load: returns ' . $s, LOGGER_DATA);
  60
  61         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  62
  63         if(($a->get_curl_code() > 299) || (! $s))
  64                 return;
  65
  66         $j = json_decode($s);
  67
  68         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  69
  70         if(! isset($j->entry))
  71                 return;
  72
  73         $total = 0;
  74         foreach($j->entry as $entry) {
  75
  76                 $total ++;
  77                 $profile_url = '';
  78                 $profile_photo = '';
  79                 $connect_url = '';
  80                 $name = '';
  81                 $network = '';
  82                 $updated = '0000-00-00 00:00:00';
  83                 $location = '';
  84                 $about = '';
  85                 $keywords = '';
  86                 $gender = '';
  87                 $generation = 0;
  88
  89                 $name = $entry->displayName;
  90
  91                 if(isset($entry->urls)) {
  92                         foreach($entry->urls as $url) {
  93                                 if($url->type == 'profile') {
  94                                         $profile_url = $url->value;
  95                                         continue;
  96                                 }
  97                                 if($url->type == 'webfinger') {
  98                                         $connect_url = str_replace('acct:' , '', $url->value);
  99                                         continue;
 100                                 }
 101                         }
 102                 }
 103                 if(isset($entry->photos)) {
 104                         foreach($entry->photos as $photo) {
 105                                 if($photo->type == 'profile') {
 106                                         $profile_photo = $photo->value;
 107                                         continue;
 108                                 }
 109                         }
 110                 }
 111
 112                 if(isset($entry->updated))
 113                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 114
 115                 if(isset($entry->network))
 116                         $network = $entry->network;
 117
 118                 if(isset($entry->currentLocation))
 119                         $location = $entry->currentLocation;
 120
 121                 if(isset($entry->aboutMe))
 122                         $about = html2bbcode($entry->aboutMe);
 123
 124                 if(isset($entry->gender))
 125                         $gender = $entry->gender;
 126
 127                 if(isset($entry->generation) AND ($entry->generation > 0))
 128                         $generation = ++$entry->generation;
 129
 130                 if(isset($entry->tags))
 131                         foreach($entry->tags as $tag)
 132                                 $keywords = implode(", ", $tag);
 133
 134                 // If you query a Friendica server for its profiles, the network has to be Friendica
 135                 /// TODO It could also be a Redmatrix server
 136                 //if ($uid == 0)
 137                 //      $network = NETWORK_DFRN;
 138
 139                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 140
 141                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 142                 // Deactivated because we now update Friendica contacts in dfrn.php
 143                 //if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 144                 //      q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 145                 //              WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 146                 //              dbesc($location),
 147                 //              dbesc($about),
 148                 //              dbesc($keywords),
 149                 //              dbesc($gender),
 150                 //              dbesc(normalise_link($profile_url)),
 151                 //              dbesc(NETWORK_DFRN));
 152         }
 153         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 154
 155         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 156                 intval($cid),
 157                 intval($uid),
 158                 intval($zcid)
 159         );
 160
 161 }
 162
 163 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 164
 165         $a = get_app();
 166
 167         // Generation:
 168         //  0: No definition
 169         //  1: Profiles on this server
 170         //  2: Contacts of profiles on this server
 171         //  3: Contacts of contacts of profiles on this server
 172         //  4: ...
 173
 174         $gcid = "";
 175
 176         $alternate = poco_alternate_ostatus_url($profile_url);
 177
 178         if ($profile_url == "")
 179                 return $gcid;
 180
 181         $urlparts = parse_url($profile_url);
 182         if (!isset($urlparts["scheme"]))
 183                 return $gcid;
 184
 185         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 186                                                 "identi.ca", "alpha.app.net")))
 187                 return $gcid;
 188
 189         $orig_updated = $updated;
 190
 191         // Don't store the statusnet connector as network
 192         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 193         if ($network == NETWORK_STATUSNET)
 194                 $network = "";
 195
 196         // The global contacts should contain the original picture, not the cached one
 197         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 198                 $profile_photo = "";
 199
 200         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 201                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 202         );
 203         if(count($r))
 204                 $network = $r[0]["network"];
 205
 206         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 207                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 208                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 209                 );
 210                 if(count($r)) {
 211                         $network = $r[0]["network"];
 212                         //$profile_url = $r[0]["url"];
 213                 }
 214         }
 215
 216         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 217                 dbesc(normalise_link($profile_url))
 218         );
 219
 220         if (count($x)) {
 221                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 222                         $network = $x[0]["network"];
 223
 224                 if ($updated == "0000-00-00 00:00:00")
 225                         $updated = $x[0]["updated"];
 226
 227                 $created = $x[0]["created"];
 228                 $server_url = $x[0]["server_url"];
 229                 $nick = $x[0]["nick"];
 230                 $addr = $x[0]["addr"];
 231                 $alias =  $x[0]["alias"];
 232                 $notify =  $x[0]["notify"];
 233         } else {
 234                 $created = "0000-00-00 00:00:00";
 235                 $server_url = "";
 236
 237                 $urlparts = parse_url($profile_url);
 238                 $nick = end(explode("/", $urlparts["path"]));
 239                 $addr = "";
 240                 $alias = "";
 241                 $notify = "";
 242         }
 243
 244         if ((($network == "") OR ($name == "") OR ($addr == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 245                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 246                 $data = probe_url($profile_url);
 247
 248                 $orig_profile = $profile_url;
 249
 250                 $network = $data["network"];
 251                 $name = $data["name"];
 252                 $nick = $data["nick"];
 253                 $addr = $data["addr"];
 254                 $alias = $data["alias"];
 255                 $notify = $data["notify"];
 256                 $profile_url = $data["url"];
 257                 $profile_photo = $data["photo"];
 258                 $server_url = $data["baseurl"];
 259
 260                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 261                         // Delete the old entry - if it exists
 262                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 263                         if ($r) {
 264                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 265                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 266                         }
 267
 268                         // possibly create a new entry
 269                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 270                 }
 271         }
 272
 273         if ($alternate AND ($network == NETWORK_OSTATUS))
 274                 return $gcid;
 275
 276         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 277                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 278                         dbesc($network),
 279                         dbesc(normalise_link($profile_url))
 280                 );
 281         }
 282
 283         if (($name == "") OR ($profile_photo == ""))
 284                 return $gcid;
 285
 286         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 287                 return $gcid;
 288
 289         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 290
 291         poco_check_server($server_url, $network);
 292
 293         $gcontact = array("url" => $profile_url,
 294                         "addr" => $addr,
 295                         "alias" => $alias,
 296                         "name" => $name,
 297                         "network" => $network,
 298                         "photo" => $profile_photo,
 299                         "about" => $about,
 300                         "location" => $location,
 301                         "gender" => $gender,
 302                         "keywords" => $keywords,
 303                         "server_url" => $server_url,
 304                         "connect" => $connect_url,
 305                         "notify" => $notify,
 306                         "updated" => $updated,
 307                         "generation" => $generation);
 308
 309         $gcid = update_gcontact($gcontact);
 310
 311         if(!$gcid)
 312                 return $gcid;
 313
 314         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 315                 intval($cid),
 316                 intval($uid),
 317                 intval($gcid),
 318                 intval($zcid)
 319         );
 320         if(! count($r)) {
 321                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 322                         intval($cid),
 323                         intval($uid),
 324                         intval($gcid),
 325                         intval($zcid),
 326                         dbesc(datetime_convert())
 327                 );
 328         } else {
 329                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 330                         dbesc(datetime_convert()),
 331                         intval($cid),
 332                         intval($uid),
 333                         intval($gcid),
 334                         intval($zcid)
 335                 );
 336         }
 337
 338         return $gcid;
 339 }
 340
 341 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 342
 343         if ($server == "")
 344                 $server = poco_detect_server($profile);
 345
 346         if ($server == "")
 347                 return true;
 348
 349         return poco_check_server($server, $network, $force);
 350 }
 351
 352 function poco_detect_server($profile) {
 353
 354         // Try to detect the server path based upon some known standard paths
 355         $server_url = "";
 356
 357         if ($server_url == "") {
 358                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 359                 if ($friendica != $profile) {
 360                         $server_url = $friendica;
 361                         $network = NETWORK_DFRN;
 362                 }
 363         }
 364
 365         if ($server_url == "") {
 366                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 367                 if ($diaspora != $profile) {
 368                         $server_url = $diaspora;
 369                         $network = NETWORK_DIASPORA;
 370                 }
 371         }
 372
 373         if ($server_url == "") {
 374                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 375                 if ($red != $profile) {
 376                         $server_url = $red;
 377                         $network = NETWORK_DIASPORA;
 378                 }
 379         }
 380
 381         return $server_url;
 382 }
 383
 384 function poco_alternate_ostatus_url($url) {
 385         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 386 }
 387
 388 function poco_last_updated($profile, $force = false) {
 389
 390         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 391                         dbesc(normalise_link($profile)));
 392
 393         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 394                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 395                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 396
 397         if ($gcontacts[0]["server_url"] != "")
 398                 $server_url = $gcontacts[0]["server_url"];
 399         else
 400                 $server_url = poco_detect_server($profile);
 401
 402         if ($server_url != "") {
 403                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 404
 405                         if ($force)
 406                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 407                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 408
 409                         return false;
 410                 }
 411
 412                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 413                         dbesc($server_url), dbesc(normalise_link($profile)));
 414         }
 415
 416         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 417                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 418                         dbesc(normalise_link($server_url)));
 419
 420                 if ($server)
 421                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 422                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 423                 else
 424                         return;
 425         }
 426
 427         // noscrape is really fast so we don't cache the call.
 428         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 429
 430                 //  Use noscrape if possible
 431                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 432
 433                 if ($server) {
 434                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 435
 436                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 437
 438                                 $noscrape = json_decode($noscraperet["body"], true);
 439
 440                                 if (($noscrape["fn"] != "") AND ($noscrape["fn"] != $gcontacts[0]["name"]))
 441                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 442                                                 dbesc($noscrape["fn"]), dbesc(normalise_link($profile)));
 443
 444                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 445                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 446                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 447
 448                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 449                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 450                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 451
 452                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 453                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 454                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 455
 456                                 if (($noscrape["pdesc"] != "") AND ($noscrape["pdesc"] != $gcontacts[0]["about"]))
 457                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 458                                                 dbesc($noscrape["pdesc"]), dbesc(normalise_link($profile)));
 459
 460                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["about"]))
 461                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 462                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 463
 464                                 if (isset($noscrape["comm"]) AND ($noscrape["comm"] != $gcontacts[0]["community"]))
 465                                         q("UPDATE `gcontact` SET `community` = %d WHERE `nurl` = '%s'",
 466                                                 intval($noscrape["comm"]), dbesc(normalise_link($profile)));
 467
 468                                 if (isset($noscrape["tags"]))
 469                                         $keywords = implode(" ", $noscrape["tags"]);
 470                                 else
 471                                         $keywords = "";
 472
 473                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 474                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 475                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 476
 477                                 $location = $noscrape["locality"];
 478
 479                                 if ($noscrape["region"] != "") {
 480                                         if ($location != "")
 481                                                 $location .= ", ";
 482
 483                                         $location .= $noscrape["region"];
 484                                 }
 485
 486                                 if ($noscrape["country-name"] != "") {
 487                                         if ($location != "")
 488                                                 $location .= ", ";
 489
 490                                         $location .= $noscrape["country-name"];
 491                                 }
 492
 493                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 494                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 495                                                 dbesc($location), dbesc(normalise_link($profile)));
 496
 497                                 // If we got data from noscrape then mark the contact as reachable
 498                                 if (is_array($noscrape) AND count($noscrape))
 499                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 500                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 501
 502                                 return $noscrape["updated"];
 503                         }
 504                 }
 505         }
 506
 507         // If we only can poll the feed, then we only do this once a while
 508         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 509                 return $gcontacts[0]["updated"];
 510
 511         $data = probe_url($profile);
 512
 513         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 514         // Then check the other link and delete this one
 515         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 516                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 517                 (normalise_link($profile) != normalise_link($data["url"]))) {
 518
 519                 // Delete the old entry
 520                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 521                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 522
 523                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 524                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 525
 526                 poco_last_updated($data["url"], $force);
 527
 528                 return false;
 529         }
 530
 531         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 532                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 533                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 534                 return false;
 535         }
 536
 537         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 538                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 539                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 540
 541         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 542                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 543                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 544
 545         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 546                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 547                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 548
 549         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 550                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 551                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 552
 553         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 554                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 555                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 556
 557         $feedret = z_fetch_url($data["poll"]);
 558
 559         if (!$feedret["success"]) {
 560                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 561                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 562                 return false;
 563         }
 564
 565         $doc = new DOMDocument();
 566         @$doc->loadXML($feedret["body"]);
 567
 568         $xpath = new DomXPath($doc);
 569         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 570
 571         $entries = $xpath->query('/atom:feed/atom:entry');
 572
 573         $last_updated = "";
 574
 575         foreach ($entries AS $entry) {
 576                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 577                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 578
 579                 if ($last_updated < $published)
 580                         $last_updated = $published;
 581
 582                 if ($last_updated < $updated)
 583                         $last_updated = $updated;
 584         }
 585
 586         // Maybe there aren't any entries. Then check if it is a valid feed
 587         if ($last_updated == "")
 588                 if ($xpath->query('/atom:feed')->length > 0)
 589                         $last_updated = "0000-00-00 00:00:00";
 590
 591         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 592                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 593
 594         if (($gcontacts[0]["generation"] == 0))
 595                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 596                         dbesc(normalise_link($profile)));
 597
 598         return($last_updated);
 599 }
 600
 601 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 602         $now = strtotime(datetime_convert());
 603
 604         if ($updated > $last_contact)
 605                 $contact_time = strtotime($updated);
 606         else
 607                 $contact_time = strtotime($last_contact);
 608
 609         $failure_time = strtotime($last_failure);
 610         $created_time = strtotime($created);
 611
 612         // If there is no "created" time then use the current time
 613         if ($created_time <= 0)
 614                 $created_time = $now;
 615
 616         // If the last contact was less than 24 hours then don't update
 617         if (($now - $contact_time) < (60 * 60 * 24))
 618                 return false;
 619
 620         // If the last failure was less than 24 hours then don't update
 621         if (($now - $failure_time) < (60 * 60 * 24))
 622                 return false;
 623
 624         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 625         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 626         //      return false;
 627
 628         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 629         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 630                 return false;
 631
 632         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 633         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 634                 return false;
 635
 636         return true;
 637 }
 638
 639 function poco_to_boolean($val) {
 640         if (($val == "true") OR ($val == 1))
 641                 return(true);
 642         if (($val == "false") OR ($val == 0))
 643                 return(false);
 644
 645         return ($val);
 646 }
 647
 648 function poco_check_server($server_url, $network = "", $force = false) {
 649
 650         // Unify the server address
 651         $server_url = trim($server_url, "/");
 652         $server_url = str_replace("/index.php", "", $server_url);
 653
 654         if ($server_url == "")
 655                 return false;
 656
 657         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 658         if ($servers) {
 659
 660                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 661                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 662                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 663
 664                 $poco = $servers[0]["poco"];
 665                 $noscrape = $servers[0]["noscrape"];
 666
 667                 if ($network == "")
 668                         $network = $servers[0]["network"];
 669
 670                 $last_contact = $servers[0]["last_contact"];
 671                 $last_failure = $servers[0]["last_failure"];
 672                 $version = $servers[0]["version"];
 673                 $platform = $servers[0]["platform"];
 674                 $site_name = $servers[0]["site_name"];
 675                 $info = $servers[0]["info"];
 676                 $register_policy = $servers[0]["register_policy"];
 677
 678                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 679                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 680                         return ($last_contact >= $last_failure);
 681                 }
 682         } else {
 683                 $poco = "";
 684                 $noscrape = "";
 685                 $version = "";
 686                 $platform = "";
 687                 $site_name = "";
 688                 $info = "";
 689                 $register_policy = -1;
 690
 691                 $last_contact = "0000-00-00 00:00:00";
 692                 $last_failure = "0000-00-00 00:00:00";
 693         }
 694         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 695
 696         $failure = false;
 697         $orig_last_failure = $last_failure;
 698
 699         // Check if the page is accessible via SSL.
 700         $server_url = str_replace("http://", "https://", $server_url);
 701         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 702
 703         // Maybe the page is unencrypted only?
 704         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 705         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 706                 $server_url = str_replace("https://", "http://", $server_url);
 707                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 708
 709                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 710         }
 711
 712         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 713                 // Workaround for bad configured servers (known nginx problem)
 714                 if ($serverret["debug"]["http_code"] != "403") {
 715                         $last_failure = datetime_convert();
 716                         $failure = true;
 717                 }
 718         } elseif ($network == NETWORK_DIASPORA)
 719                 $last_contact = datetime_convert();
 720
 721         if (!$failure) {
 722                 // Test for Diaspora
 723                 $serverret = z_fetch_url($server_url);
 724
 725                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 726                         $failure = true;
 727                 else {
 728                         $lines = explode("\n",$serverret["header"]);
 729                         if(count($lines))
 730                                 foreach($lines as $line) {
 731                                         $line = trim($line);
 732                                         if(stristr($line,'X-Diaspora-Version:')) {
 733                                                 $platform = "Diaspora";
 734                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 735                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 736                                                 $network = NETWORK_DIASPORA;
 737                                                 $versionparts = explode("-", $version);
 738                                                 $version = $versionparts[0];
 739                                         }
 740                                 }
 741                 }
 742         }
 743
 744         if (!$failure) {
 745                 // Test for Statusnet
 746                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 747                 // The "not implemented" is a special treatment for really, really old Friendica versions
 748                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 749                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 750                         $platform = "StatusNet";
 751                         $version = trim($serverret["body"], '"');
 752                         $network = NETWORK_OSTATUS;
 753                 }
 754
 755                 // Test for GNU Social
 756                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 757                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 758                         $platform = "GNU Social";
 759                         $version = trim($serverret["body"], '"');
 760                         $network = NETWORK_OSTATUS;
 761                 }
 762
 763                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 764                 if ($serverret["success"]) {
 765                         $data = json_decode($serverret["body"]);
 766
 767                         if (isset($data->site->server)) {
 768                                 $last_contact = datetime_convert();
 769
 770                                 if (isset($data->site->hubzilla)) {
 771                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 772                                         $version = $data->site->hubzilla->RED_VERSION;
 773                                         $network = NETWORK_DIASPORA;
 774                                 }
 775                                 if (isset($data->site->redmatrix)) {
 776                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 777                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 778                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 779                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 780
 781                                         $version = $data->site->redmatrix->RED_VERSION;
 782                                         $network = NETWORK_DIASPORA;
 783                                 }
 784                                 if (isset($data->site->friendica)) {
 785                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 786                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 787                                         $network = NETWORK_DFRN;
 788                                 }
 789
 790                                 $site_name = $data->site->name;
 791
 792                                 $data->site->closed = poco_to_boolean($data->site->closed);
 793                                 $data->site->private = poco_to_boolean($data->site->private);
 794                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 795
 796                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 797                                         $register_policy = REGISTER_APPROVE;
 798                                 elseif (!$data->site->closed AND !$data->site->private)
 799                                         $register_policy = REGISTER_OPEN;
 800                                 else
 801                                         $register_policy = REGISTER_CLOSED;
 802                         }
 803                 }
 804         }
 805
 806         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 807         if (!$failure) {
 808                 $serverret = z_fetch_url($server_url."/statistics.json");
 809                 if ($serverret["success"]) {
 810                         $data = json_decode($serverret["body"]);
 811                         if ($version == "")
 812                                 $version = $data->version;
 813
 814                         $site_name = $data->name;
 815
 816                         if (isset($data->network) AND ($platform == ""))
 817                                 $platform = $data->network;
 818
 819                         if ($platform == "Diaspora")
 820                                 $network = NETWORK_DIASPORA;
 821
 822                         if ($data->registrations_open)
 823                                 $register_policy = REGISTER_OPEN;
 824                         else
 825                                 $register_policy = REGISTER_CLOSED;
 826
 827                         if (isset($data->version))
 828                                 $last_contact = datetime_convert();
 829                 }
 830         }
 831
 832         // Check for noscrape
 833         // Friendica servers could be detected as OStatus servers
 834         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 835                 $serverret = z_fetch_url($server_url."/friendica/json");
 836
 837                 if (!$serverret["success"])
 838                         $serverret = z_fetch_url($server_url."/friendika/json");
 839
 840                 if ($serverret["success"]) {
 841                         $data = json_decode($serverret["body"]);
 842
 843                         if (isset($data->version)) {
 844                                 $last_contact = datetime_convert();
 845                                 $network = NETWORK_DFRN;
 846
 847                                 $noscrape = $data->no_scrape_url;
 848                                 $version = $data->version;
 849                                 $site_name = $data->site_name;
 850                                 $info = $data->info;
 851                                 $register_policy_str = $data->register_policy;
 852                                 $platform = $data->platform;
 853
 854                                 switch ($register_policy_str) {
 855                                         case "REGISTER_CLOSED":
 856                                                 $register_policy = REGISTER_CLOSED;
 857                                                 break;
 858                                         case "REGISTER_APPROVE":
 859                                                 $register_policy = REGISTER_APPROVE;
 860                                                 break;
 861                                         case "REGISTER_OPEN":
 862                                                 $register_policy = REGISTER_OPEN;
 863                                                 break;
 864                                 }
 865                         }
 866                 }
 867         }
 868
 869         // Look for poco
 870         if (!$failure) {
 871                 $serverret = z_fetch_url($server_url."/poco");
 872                 if ($serverret["success"]) {
 873                         $data = json_decode($serverret["body"]);
 874                         if (isset($data->totalResults)) {
 875                                 $poco = $server_url."/poco";
 876                                 $last_contact = datetime_convert();
 877                         }
 878                 }
 879         }
 880
 881         // Check again if the server exists
 882         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 883
 884         if ($servers)
 885                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 886                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 887                         dbesc($server_url),
 888                         dbesc($version),
 889                         dbesc($site_name),
 890                         dbesc($info),
 891                         intval($register_policy),
 892                         dbesc($poco),
 893                         dbesc($noscrape),
 894                         dbesc($network),
 895                         dbesc($platform),
 896                         dbesc($last_contact),
 897                         dbesc($last_failure),
 898                         dbesc(normalise_link($server_url))
 899                 );
 900         else
 901                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 902                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 903                                 dbesc($server_url),
 904                                 dbesc(normalise_link($server_url)),
 905                                 dbesc($version),
 906                                 dbesc($site_name),
 907                                 dbesc($info),
 908                                 intval($register_policy),
 909                                 dbesc($poco),
 910                                 dbesc($noscrape),
 911                                 dbesc($network),
 912                                 dbesc($platform),
 913                                 dbesc(datetime_convert()),
 914                                 dbesc($last_contact),
 915                                 dbesc($last_failure),
 916                                 dbesc(datetime_convert())
 917                 );
 918
 919         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 920
 921         return !$failure;
 922 }
 923
 924 function poco_contact_from_body($body, $created, $cid, $uid) {
 925         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 926                 function ($match) use ($created, $cid, $uid){
 927                         return(sub_poco_from_share($match, $created, $cid, $uid));
 928                 }, $body);
 929 }
 930
 931 function sub_poco_from_share($share, $created, $cid, $uid) {
 932         $profile = "";
 933         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 934         if ($matches[1] != "")
 935                 $profile = $matches[1];
 936
 937         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 938         if ($matches[1] != "")
 939                 $profile = $matches[1];
 940
 941         if ($profile == "")
 942                 return;
 943
 944         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 945         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 946 }
 947
 948 function poco_store($item) {
 949
 950         // Isn't it public?
 951         if ($item['private'])
 952                 return;
 953
 954         // Or is it from a network where we don't store the global contacts?
 955         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 956                 return;
 957
 958         // Is it a global copy?
 959         $store_gcontact = ($item["uid"] == 0);
 960
 961         // Is it a comment on a global copy?
 962         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 963                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 964                 $store_gcontact = count($q);
 965         }
 966
 967         if (!$store_gcontact)
 968                 return;
 969
 970         // "3" means: We don't know this contact directly (Maybe a reshared item)
 971         $generation = 3;
 972         $network = "";
 973         $profile_url = $item["author-link"];
 974
 975         // Is it a user from our server?
 976         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 977                 dbesc(normalise_link($item["author-link"])));
 978         if (count($q)) {
 979                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 980                 $generation = 1;
 981                 $network = NETWORK_DFRN;
 982         } else { // Is it a contact from a user on our server?
 983                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 984                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 985                         dbesc(normalise_link($item["author-link"])),
 986                         dbesc(normalise_link($item["author-link"])),
 987                         dbesc($item["author-link"]),
 988                         dbesc(NETWORK_STATUSNET));
 989                 if (count($q)) {
 990                         $generation = 2;
 991                         $network = $q[0]["network"];
 992                         $profile_url = $q[0]["url"];
 993                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 994                 }
 995         }
 996
 997         if ($generation == 3)
 998                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 999
1000         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
1001
1002         // Maybe its a body with a shared item? Then extract a global contact from it.
1003         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
1004 }
1005
1006 function count_common_friends($uid,$cid) {
1007
1008         $r = q("SELECT count(*) as `total`
1009                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1010                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1011                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1012                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1013                 intval($cid),
1014                 intval($uid),
1015                 intval($uid),
1016                 intval($cid)
1017         );
1018
1019 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1020         if(count($r))
1021                 return $r[0]['total'];
1022         return 0;
1023
1024 }
1025
1026
1027 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1028
1029         if($shuffle)
1030                 $sql_extra = " order by rand() ";
1031         else
1032                 $sql_extra = " order by `gcontact`.`name` asc ";
1033
1034         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1035                 FROM `glink`
1036                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
1037                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
1038                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
1039                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
1040                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
1041                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1042                         $sql_extra LIMIT %d, %d",
1043                 intval($cid),
1044                 intval($uid),
1045                 intval($uid),
1046                 intval($cid),
1047                 intval($start),
1048                 intval($limit)
1049         );
1050
1051         return $r;
1052
1053 }
1054
1055
1056 function count_common_friends_zcid($uid,$zcid) {
1057
1058         $r = q("SELECT count(*) as `total`
1059                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1060                 where `glink`.`zcid` = %d
1061                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1062                 intval($zcid),
1063                 intval($uid)
1064         );
1065
1066         if(count($r))
1067                 return $r[0]['total'];
1068         return 0;
1069
1070 }
1071
1072 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1073
1074         if($shuffle)
1075                 $sql_extra = " order by rand() ";
1076         else
1077                 $sql_extra = " order by `gcontact`.`name` asc ";
1078
1079         $r = q("SELECT `gcontact`.*
1080                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1081                 where `glink`.`zcid` = %d
1082                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1083                 $sql_extra limit %d, %d",
1084                 intval($zcid),
1085                 intval($uid),
1086                 intval($start),
1087                 intval($limit)
1088         );
1089
1090         return $r;
1091
1092 }
1093
1094
1095 function count_all_friends($uid,$cid) {
1096
1097         $r = q("SELECT count(*) as `total`
1098                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1099                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1100                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1101                 intval($cid),
1102                 intval($uid)
1103         );
1104
1105         if(count($r))
1106                 return $r[0]['total'];
1107         return 0;
1108
1109 }
1110
1111
1112 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1113
1114         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1115                 FROM `glink`
1116                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1117                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1118                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1119                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1120                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1121                 intval($uid),
1122                 intval($cid),
1123                 intval($uid),
1124                 intval($start),
1125                 intval($limit)
1126         );
1127
1128         return $r;
1129 }
1130
1131
1132
1133 function suggestion_query($uid, $start = 0, $limit = 80) {
1134
1135         if(! $uid)
1136                 return array();
1137
1138         $network = array(NETWORK_DFRN);
1139
1140         if (get_config('system','diaspora_enabled'))
1141                 $network[] = NETWORK_DIASPORA;
1142
1143         if (!get_config('system','ostatus_disabled'))
1144                 $network[] = NETWORK_OSTATUS;
1145
1146         $sql_network = implode("', '", $network);
1147         //$sql_network = "'".$sql_network."', ''";
1148         $sql_network = "'".$sql_network."'";
1149
1150         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1151                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1152                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1153                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1154                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1155                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1156                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1157                 AND `gcontact`.`network` IN (%s)
1158                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1159                 intval($uid),
1160                 intval($uid),
1161                 intval($uid),
1162                 intval($uid),
1163                 $sql_network,
1164                 intval($start),
1165                 intval($limit)
1166         );
1167
1168         if(count($r) && count($r) >= ($limit -1))
1169                 return $r;
1170
1171         $r2 = q("SELECT gcontact.* FROM gcontact
1172                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1173                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1174                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1175                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1176                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1177                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1178                 AND `gcontact`.`network` IN (%s)
1179                 ORDER BY rand() LIMIT %d, %d",
1180                 intval($uid),
1181                 intval($uid),
1182                 intval($uid),
1183                 $sql_network,
1184                 intval($start),
1185                 intval($limit)
1186         );
1187
1188         $list = array();
1189         foreach ($r2 AS $suggestion)
1190                 $list[$suggestion["nurl"]] = $suggestion;
1191
1192         foreach ($r AS $suggestion)
1193                 $list[$suggestion["nurl"]] = $suggestion;
1194
1195         while (sizeof($list) > ($limit))
1196                 array_pop($list);
1197
1198         return $list;
1199 }
1200
1201 function update_suggestions() {
1202
1203         $a = get_app();
1204
1205         $done = array();
1206
1207         /// TODO Check if it is really neccessary to poll the own server
1208         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1209
1210         $done[] = $a->get_baseurl() . '/poco';
1211
1212         if(strlen(get_config('system','directory'))) {
1213                 $x = fetch_url(get_server()."/pubsites");
1214                 if($x) {
1215                         $j = json_decode($x);
1216                         if($j->entries) {
1217                                 foreach($j->entries as $entry) {
1218
1219                                         poco_check_server($entry->url);
1220
1221                                         $url = $entry->url . '/poco';
1222                                         if(! in_array($url,$done))
1223                                                 poco_load(0,0,0,$entry->url . '/poco');
1224                                 }
1225                         }
1226                 }
1227         }
1228
1229         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1230         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1231                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1232         );
1233
1234         if(count($r)) {
1235                 foreach($r as $rr) {
1236                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1237                         if(! in_array($base,$done))
1238                                 poco_load(0,0,0,$base);
1239                 }
1240         }
1241 }
1242
1243 function poco_discover_federation() {
1244         $last = get_config('poco','last_federation_discovery');
1245
1246         if($last) {
1247                 $next = $last + (24 * 60 * 60);
1248                 if($next > time())
1249                         return;
1250         }
1251
1252         // Discover Friendica, Hubzilla and Diaspora servers
1253         $serverdata = fetch_url("http://the-federation.info/pods.json");
1254
1255         if ($serverdata) {
1256                 $servers = json_decode($serverdata);
1257
1258                 foreach($servers->pods AS $server)
1259                         poco_check_server("https://".$server->host);
1260         }
1261
1262         // Discover GNU Social Servers
1263         if (!get_config('system','ostatus_disabled')) {
1264                 $serverdata = "http://gstools.org/api/get_open_instances/";
1265
1266                 $result = z_fetch_url($serverdata);
1267                 if ($result["success"]) {
1268                         $servers = json_decode($result["body"]);
1269
1270                         foreach($servers->data AS $server)
1271                                 poco_check_server($server->instance_address);
1272                 }
1273         }
1274
1275         set_config('poco','last_federation_discovery', time());
1276 }
1277
1278 function poco_discover($complete = false) {
1279
1280         // Update the server list
1281         poco_discover_federation();
1282
1283         $no_of_queries = 5;
1284
1285         $requery_days = intval(get_config("system", "poco_requery_days"));
1286
1287         if ($requery_days == 0)
1288                 $requery_days = 7;
1289
1290         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1291
1292         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1293         if ($r)
1294                 foreach ($r AS $server) {
1295
1296                         if (!poco_check_server($server["url"], $server["network"])) {
1297                                 // The server is not reachable? Okay, then we will try it later
1298                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1299                                 continue;
1300                         }
1301
1302                         // Fetch all users from the other server
1303                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1304
1305                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1306
1307                         $retdata = z_fetch_url($url);
1308                         if ($retdata["success"]) {
1309                                 $data = json_decode($retdata["body"]);
1310
1311                                 poco_discover_server($data, 2);
1312
1313                                 if (get_config('system','poco_discovery') > 1) {
1314
1315                                         $timeframe = get_config('system','poco_discovery_since');
1316                                         if ($timeframe == 0)
1317                                                 $timeframe = 30;
1318
1319                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1320
1321                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1322                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1323
1324                                         $success = false;
1325
1326                                         $retdata = z_fetch_url($url);
1327                                         if ($retdata["success"]) {
1328                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1329                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1330                                         }
1331
1332                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1333                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1334                                                 poco_discover_server_users($data, $server);
1335                                         }
1336                                 }
1337
1338                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1339                                 if (!$complete AND (--$no_of_queries == 0))
1340                                         break;
1341                         } else {
1342                                 // If the server hadn't replied correctly, then force a sanity check
1343                                 poco_check_server($server["url"], $server["network"], true);
1344
1345                                 // If we couldn't reach the server, we will try it some time later
1346                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1347                         }
1348                 }
1349 }
1350
1351 function poco_discover_server_users($data, $server) {
1352
1353         if (!isset($data->entry))
1354                 return;
1355
1356         foreach ($data->entry AS $entry) {
1357                 $username = "";
1358                 if (isset($entry->urls)) {
1359                         foreach($entry->urls as $url)
1360                                 if($url->type == 'profile') {
1361                                         $profile_url = $url->value;
1362                                         $urlparts = parse_url($profile_url);
1363                                         $username = end(explode("/", $urlparts["path"]));
1364                                 }
1365                 }
1366                 if ($username != "") {
1367                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1368
1369                         // Fetch all contacts from a given user from the other server
1370                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1371
1372                         $retdata = z_fetch_url($url);
1373                         if ($retdata["success"])
1374                                 poco_discover_server(json_decode($retdata["body"]), 3);
1375                 }
1376         }
1377 }
1378
1379 function poco_discover_server($data, $default_generation = 0) {
1380
1381         if (!isset($data->entry) OR !count($data->entry))
1382                 return false;
1383
1384         $success = false;
1385
1386         foreach ($data->entry AS $entry) {
1387                 $profile_url = '';
1388                 $profile_photo = '';
1389                 $connect_url = '';
1390                 $name = '';
1391                 $network = '';
1392                 $updated = '0000-00-00 00:00:00';
1393                 $location = '';
1394                 $about = '';
1395                 $keywords = '';
1396                 $gender = '';
1397                 $generation = $default_generation;
1398
1399                 $name = $entry->displayName;
1400
1401                 if(isset($entry->urls)) {
1402                         foreach($entry->urls as $url) {
1403                                 if($url->type == 'profile') {
1404                                         $profile_url = $url->value;
1405                                         continue;
1406                                 }
1407                                 if($url->type == 'webfinger') {
1408                                         $connect_url = str_replace('acct:' , '', $url->value);
1409                                         continue;
1410                                 }
1411                         }
1412                 }
1413
1414                 if(isset($entry->photos)) {
1415                         foreach($entry->photos as $photo) {
1416                                 if($photo->type == 'profile') {
1417                                         $profile_photo = $photo->value;
1418                                         continue;
1419                                 }
1420                         }
1421                 }
1422
1423                 if(isset($entry->updated))
1424                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1425
1426                 if(isset($entry->network))
1427                         $network = $entry->network;
1428
1429                 if(isset($entry->currentLocation))
1430                         $location = $entry->currentLocation;
1431
1432                 if(isset($entry->aboutMe))
1433                         $about = html2bbcode($entry->aboutMe);
1434
1435                 if(isset($entry->gender))
1436                         $gender = $entry->gender;
1437
1438                 if(isset($entry->generation) AND ($entry->generation > 0))
1439                         $generation = ++$entry->generation;
1440
1441                 if(isset($entry->tags))
1442                         foreach($entry->tags as $tag)
1443                                 $keywords = implode(", ", $tag);
1444
1445                 if ($generation > 0) {
1446                         $success = true;
1447
1448                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1449                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1450                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1451                 }
1452         }
1453         return $success;
1454 }
1455
1456 /**
1457  * @brief Fetch the gcontact id, add an entry if not existed
1458  *
1459  * @param arr $contact contact array
1460  * @return bool|int Returns false if not found, integer if contact was found
1461  */
1462 function get_gcontact_id($contact) {
1463
1464         $gcontact_id = 0;
1465
1466         if ($contact["network"] == NETWORK_STATUSNET)
1467                 $contact["network"] = NETWORK_OSTATUS;
1468
1469         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1470                 dbesc(normalise_link($contact["url"])));
1471
1472         if ($r)
1473                 $gcontact_id = $r[0]["id"];
1474         else {
1475                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `generation`)
1476                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
1477                         dbesc($contact["name"]),
1478                         dbesc($contact["nick"]),
1479                         dbesc($contact["addr"]),
1480                         dbesc($contact["network"]),
1481                         dbesc($contact["url"]),
1482                         dbesc(normalise_link($contact["url"])),
1483                         dbesc($contact["photo"]),
1484                         dbesc(datetime_convert()),
1485                         dbesc(datetime_convert()),
1486                         dbesc($contact["location"]),
1487                         dbesc($contact["about"]),
1488                         intval($contact["generation"])
1489                 );
1490
1491                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1492                         dbesc(normalise_link($contact["url"])));
1493
1494                 if ($r)
1495                         $gcontact_id = $r[0]["id"];
1496         }
1497
1498         if ((count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1499          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1500                 dbesc(normalise_link($contact["url"])),
1501                 intval($gcontact_id));
1502
1503         return $gcontact_id;
1504 }
1505
1506 /**
1507  * @brief Updates the gcontact table from a given array
1508  *
1509  * @param arr $contact contact array
1510  * @return bool|int Returns false if not found, integer if contact was found
1511  */
1512 function update_gcontact($contact) {
1513
1514         /// @todo update contact table as well
1515
1516         $gcontact_id = get_gcontact_id($contact);
1517
1518         if (!$gcontact_id)
1519                 return false;
1520
1521         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1522                         `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1523                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1524                 intval($gcontact_id));
1525
1526         // Get all field names
1527         $fields = array();
1528         foreach ($r[0] AS $field => $data)
1529                 $fields[$field] = $data;
1530
1531         unset($fields["url"]);
1532         unset($fields["updated"]);
1533
1534         // assign all unassigned fields from the database entry
1535         foreach ($fields AS $field => $data)
1536                 if (!isset($contact[$field]))
1537                         $contact[$field] = $r[0][$field];
1538
1539         if ($contact["network"] == NETWORK_STATUSNET)
1540                 $contact["network"] = NETWORK_OSTATUS;
1541
1542         if (!isset($contact["updated"]))
1543                 $contact["updated"] = datetime_convert();
1544
1545         // Check if any field changed
1546         $update = false;
1547         unset($fields["generation"]);
1548
1549         foreach ($fields AS $field => $data)
1550                 if ($contact[$field] != $r[0][$field])
1551                         $update = true;
1552
1553         if ($contact["generation"] < $r[0]["generation"])
1554                 $update = true;
1555
1556         if ($update) {
1557                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1558                                         `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
1559                                         `alias` = '%s', `notify` = '%s', `url` = '%s',
1560                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1561                                         `server_url` = '%s', `connect` = '%s'
1562                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1563                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1564                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1565                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1566                         intval($contact["nsfw"]), dbesc($contact["alias"]), dbesc($contact["notify"]),
1567                         dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1568                         intval($contact["generation"]), dbesc($contact["updated"]),
1569                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1570                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1571         }
1572
1573         return $gcontact_id;
1574 }
1575
1576 /**
1577  * @brief Updates the gcontact entry from probe
1578  *
1579  * @param str $url profile link
1580  */
1581 function update_gcontact_from_probe($url) {
1582         $data = probe_url($url);
1583
1584         if ($data["network"] != NETWORK_PHANTOM)
1585                 update_gcontact($data);
1586 }
1587
1588 /**
1589  * @brief Fetches users of given GNU Social server
1590  *
1591  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1592  *
1593  * @param str $server Server address
1594  */
1595 function gs_fetch_users($server) {
1596
1597         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1598
1599         $a = get_app();
1600
1601         $url = $server."/main/statistics";
1602
1603         $result = z_fetch_url($url);
1604         if (!$result["success"])
1605                 return false;
1606
1607         $statistics = json_decode($result["body"]);
1608
1609         if (is_object($statistics->config)) {
1610                 if ($statistics->config->instance_with_ssl)
1611                         $server = "https://";
1612                 else
1613                         $server = "http://";
1614
1615                 $server .= $statistics->config->instance_address;
1616
1617                 $hostname = $statistics->config->instance_address;
1618         } else {
1619                 if ($statistics->instance_with_ssl)
1620                         $server = "https://";
1621                 else
1622                         $server = "http://";
1623
1624                 $server .= $statistics->instance_address;
1625
1626                 $hostname = $statistics->instance_address;
1627         }
1628
1629         if (is_object($statistics->users))
1630                 foreach ($statistics->users AS $nick => $user) {
1631                         $profile_url = $server."/".$user->nickname;
1632
1633                         $contact = array("url" => $profile_url,
1634                                         "name" => $user->fullname,
1635                                         "addr" => $user->nickname."@".$hostname,
1636                                         "nick" => $user->nickname,
1637                                         "about" => $user->bio,
1638                                         "network" => NETWORK_OSTATUS,
1639                                         "photo" => $a->get_baseurl()."/images/person-175.jpg");
1640                         get_gcontact_id($contact);
1641                 }
1642 }
1643
1644 /**
1645  * @brief Asking GNU Social server on a regular base for their user data
1646  *
1647  */
1648 function gs_discover() {
1649
1650         $requery_days = intval(get_config("system", "poco_requery_days"));
1651
1652         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1653
1654         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1655                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1656
1657         if (!$r)
1658                 return;
1659
1660         foreach ($r AS $server) {
1661                 gs_fetch_users($server["url"]);
1662                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1663         }
1664 }
1665 ?>