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