include/socgraph.php

   1 <?php
   2
   3 require_once('include/datetime.php');
   4 require_once("include/Scrape.php");
   5 require_once("include/html2bbcode.php");
   6
   7 /*
   8  To-Do:
   9  - Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
  10  - Fetch profile data from profile page for Redmatrix users
  11  - Detect if it is a forum
  12 */
  13
  14 /*
  15  * poco_load
  16  *
  17  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  18  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  19  * if anything (name or photo) has changed.
  20  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  21  *
  22  * Once the global contact is stored add (if necessary) the contact linkage which associates
  23  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  24  * pointing to the same global contact id.
  25  *
  26  */
  27
  28
  29
  30
  31 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  32
  33         $a = get_app();
  34
  35         if($cid) {
  36                 if((! $url) || (! $uid)) {
  37                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  38                                 intval($cid)
  39                         );
  40                         if(count($r)) {
  41                                 $url = $r[0]['poco'];
  42                                 $uid = $r[0]['uid'];
  43                         }
  44                 }
  45                 if(! $uid)
  46                         return;
  47         }
  48
  49         if(! $url)
  50                 return;
  51
  52         $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation') ;
  53
  54         logger('poco_load: ' . $url, LOGGER_DEBUG);
  55
  56         $s = fetch_url($url);
  57
  58         logger('poco_load: returns ' . $s, LOGGER_DATA);
  59
  60         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  61
  62         if(($a->get_curl_code() > 299) || (! $s))
  63                 return;
  64
  65         $j = json_decode($s);
  66
  67         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  68
  69         if(! isset($j->entry))
  70                 return;
  71
  72         $total = 0;
  73         foreach($j->entry as $entry) {
  74
  75                 $total ++;
  76                 $profile_url = '';
  77                 $profile_photo = '';
  78                 $connect_url = '';
  79                 $name = '';
  80                 $network = '';
  81                 $updated = '0000-00-00 00:00:00';
  82                 $location = '';
  83                 $about = '';
  84                 $keywords = '';
  85                 $gender = '';
  86                 $generation = 0;
  87
  88                 $name = $entry->displayName;
  89
  90                 if(isset($entry->urls)) {
  91                         foreach($entry->urls as $url) {
  92                                 if($url->type == 'profile') {
  93                                         $profile_url = $url->value;
  94                                         continue;
  95                                 }
  96                                 if($url->type == 'webfinger') {
  97                                         $connect_url = str_replace('acct:' , '', $url->value);
  98                                         continue;
  99                                 }
 100                         }
 101                 }
 102                 if(isset($entry->photos)) {
 103                         foreach($entry->photos as $photo) {
 104                                 if($photo->type == 'profile') {
 105                                         $profile_photo = $photo->value;
 106                                         continue;
 107                                 }
 108                         }
 109                 }
 110
 111                 if(isset($entry->updated))
 112                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 113
 114                 if(isset($entry->network))
 115                         $network = $entry->network;
 116
 117                 if(isset($entry->currentLocation))
 118                         $location = $entry->currentLocation;
 119
 120                 if(isset($entry->aboutMe))
 121                         $about = html2bbcode($entry->aboutMe);
 122
 123                 if(isset($entry->gender))
 124                         $gender = $entry->gender;
 125
 126                 if(isset($entry->generation) AND ($entry->generation > 0))
 127                         $generation = ++$entry->generation;
 128
 129                 if(isset($entry->tags))
 130                         foreach($entry->tags as $tag)
 131                                 $keywords = implode(", ", $tag);
 132
 133                 // If you query a Friendica server for its profiles, the network has to be Friendica
 134                 // To-Do: It could also be a Redmatrix server
 135                 //if ($uid == 0)
 136                 //      $network = NETWORK_DFRN;
 137
 138                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 139
 140                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 141                 if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 142                         q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 143                                 WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 144                                 dbesc($location),
 145                                 dbesc($about),
 146                                 dbesc($keywords),
 147                                 dbesc($gender),
 148                                 dbesc(normalise_link($profile_url)),
 149                                 dbesc(NETWORK_DFRN));
 150         }
 151         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 152
 153         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 154                 intval($cid),
 155                 intval($uid),
 156                 intval($zcid)
 157         );
 158
 159 }
 160
 161 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 162
 163         $a = get_app();
 164
 165         // Generation:
 166         //  0: No definition
 167         //  1: Profiles on this server
 168         //  2: Contacts of profiles on this server
 169         //  3: Contacts of contacts of profiles on this server
 170         //  4: ...
 171
 172         $gcid = "";
 173
 174         if ($profile_url == "")
 175                 return $gcid;
 176
 177         $urlparts = parse_url($profile_url);
 178         if (!isset($urlparts["scheme"]))
 179                 return $gcid;
 180
 181         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 182                                                 "identi.ca", "alpha.app.net")))
 183                 return $gcid;
 184
 185         $orig_updated = $updated;
 186
 187         // Don't store the statusnet connector as network
 188         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 189         if ($network == NETWORK_STATUSNET)
 190                 $network = "";
 191
 192         // The global contacts should contain the original picture, not the cached one
 193         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 194                 $profile_photo = "";
 195
 196         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 197                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 198         );
 199         if(count($r))
 200                 $network = $r[0]["network"];
 201
 202         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 203                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 204                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 205                 );
 206                 if(count($r)) {
 207                         $network = $r[0]["network"];
 208                         $profile_url = $r[0]["url"];
 209                 }
 210         }
 211
 212         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 213                 dbesc(normalise_link($profile_url))
 214         );
 215
 216         if (count($x)) {
 217                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 218                         $network = $x[0]["network"];
 219
 220                 if ($updated == "0000-00-00 00:00:00")
 221                         $updated = $x[0]["updated"];
 222
 223                 $created = $x[0]["created"];
 224                 $server_url = $x[0]["server_url"];
 225                 $nick = $x[0]["nick"];
 226         } else {
 227                 $created = "0000-00-00 00:00:00";
 228                 $server_url = "";
 229
 230                 $urlparts = parse_url($profile_url);
 231                 $nick = end(explode("/", $urlparts["path"]));
 232         }
 233
 234         if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == ""))
 235                 AND poco_reachable($profile_url, $server_url, $network, true)) {
 236                 $data = probe_url($profile_url);
 237
 238                 $network = $data["network"];
 239                 $name = $data["name"];
 240                 $nick = $data["nick"];
 241                 $profile_url = $data["url"];
 242                 $profile_photo = $data["photo"];
 243                 $server_url = $data["baseurl"];
 244         }
 245
 246         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 247                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 248                         dbesc($network),
 249                         dbesc(normalise_link($profile_url))
 250                 );
 251         }
 252
 253         if (($name == "") OR ($profile_photo == ""))
 254                 return $gcid;
 255
 256         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 257                 return $gcid;
 258
 259         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 260
 261         poco_check_server($server_url, $network);
 262
 263         if(count($x)) {
 264                 $gcid = $x[0]['id'];
 265
 266                 if (($location == "") AND ($x[0]['location'] != ""))
 267                         $location = $x[0]['location'];
 268
 269                 if (($about == "") AND ($x[0]['about'] != ""))
 270                         $about = $x[0]['about'];
 271
 272                 if (($gender == "") AND ($x[0]['gender'] != ""))
 273                         $gender = $x[0]['gender'];
 274
 275                 if (($keywords == "") AND ($x[0]['keywords'] != ""))
 276                         $keywords = $x[0]['keywords'];
 277
 278                 if (($generation == 0) AND ($x[0]['generation'] > 0))
 279                         $generation = $x[0]['generation'];
 280
 281                 if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
 282                         q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
 283                                 `updated` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
 284                                 WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
 285                                 dbesc($name),
 286                                 dbesc($network),
 287                                 dbesc($profile_photo),
 288                                 dbesc($connect_url),
 289                                 dbesc($profile_url),
 290                                 dbesc($server_url),
 291                                 dbesc($updated),
 292                                 dbesc($location),
 293                                 dbesc($about),
 294                                 dbesc($keywords),
 295                                 dbesc($gender),
 296                                 intval($generation),
 297                                 intval($generation),
 298                                 dbesc(normalise_link($profile_url))
 299                         );
 300                 }
 301         } else {
 302                 q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `location`, `about`, `keywords`, `gender`, `generation`)
 303                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 304                         dbesc($name),
 305                         dbesc($nick),
 306                         dbesc($network),
 307                         dbesc($profile_url),
 308                         dbesc(normalise_link($profile_url)),
 309                         dbesc($profile_photo),
 310                         dbesc($connect_url),
 311                         dbesc($server_url),
 312                         dbesc(datetime_convert()),
 313                         dbesc($updated),
 314                         dbesc($location),
 315                         dbesc($about),
 316                         dbesc($keywords),
 317                         dbesc($gender),
 318                         intval($generation)
 319                 );
 320                 $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 321                         dbesc(normalise_link($profile_url))
 322                 );
 323                 if(count($x))
 324                         $gcid = $x[0]['id'];
 325         }
 326
 327         if(! $gcid)
 328                 return $gcid;
 329
 330         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 331                 intval($cid),
 332                 intval($uid),
 333                 intval($gcid),
 334                 intval($zcid)
 335         );
 336         if(! count($r)) {
 337                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 338                         intval($cid),
 339                         intval($uid),
 340                         intval($gcid),
 341                         intval($zcid),
 342                         dbesc(datetime_convert())
 343                 );
 344         } else {
 345                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 346                         dbesc(datetime_convert()),
 347                         intval($cid),
 348                         intval($uid),
 349                         intval($gcid),
 350                         intval($zcid)
 351                 );
 352         }
 353
 354         // For unknown reasons there are sometimes duplicates
 355         q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
 356                 NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
 357                 dbesc(normalise_link($profile_url)),
 358                 intval($gcid)
 359         );
 360
 361         return $gcid;
 362 }
 363
 364 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 365
 366         if ($server == "")
 367                 $server = poco_detect_server($profile);
 368
 369         if ($server == "")
 370                 return true;
 371
 372         return poco_check_server($server, $network, $force);
 373 }
 374
 375 function poco_detect_server($profile) {
 376
 377         // Try to detect the server path based upon some known standard paths
 378         $server_url = "";
 379
 380         if ($server_url == "") {
 381                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 382                 if ($friendica != $profile) {
 383                         $server_url = $friendica;
 384                         $network = NETWORK_DFRN;
 385                 }
 386         }
 387
 388         if ($server_url == "") {
 389                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 390                 if ($diaspora != $profile) {
 391                         $server_url = $diaspora;
 392                         $network = NETWORK_DIASPORA;
 393                 }
 394         }
 395
 396         if ($server_url == "") {
 397                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 398                 if ($red != $profile) {
 399                         $server_url = $red;
 400                         $network = NETWORK_DIASPORA;
 401                 }
 402         }
 403
 404         return $server_url;
 405 }
 406
 407 function poco_last_updated($profile, $force = false) {
 408
 409         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 410                         dbesc(normalise_link($profile)));
 411
 412         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 413                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 414                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 415
 416         $urlparts = parse_url($profile);
 417         if (!isset($urlparts["scheme"]))
 418                 return;
 419
 420         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 421                                                 "identi.ca", "alpha.app.net"))) {
 422                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 423                         dbesc(NETWORK_PHANTOM), dbesc(normalise_link($profile)));
 424                 return;
 425         }
 426
 427         if ($gcontacts[0]["server_url"] != "")
 428                 $server_url = $gcontacts[0]["server_url"];
 429         else
 430                 $server_url = poco_detect_server($profile);
 431
 432         if ($server_url != "") {
 433                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 434
 435                         if ($force)
 436                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 437                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 438
 439                         return false;
 440                 }
 441
 442                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 443                         dbesc($server_url), dbesc(normalise_link($profile)));
 444         }
 445
 446         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 447                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 448                         dbesc(normalise_link($server_url)));
 449
 450                 if ($server)
 451                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 452                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 453                 else
 454                         return;
 455         }
 456
 457         // noscrape is really fast so we don't cache the call.
 458         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 459
 460                 //  Use noscrape if possible
 461                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 462
 463                 if ($server) {
 464                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 465                          if ($noscraperet["success"] AND ($noscraperet["body"] = "")) {
 466                                 $noscrape = json_decode($noscraperet["body"], true);
 467
 468                                 if (($noscrape["name"] != "") AND ($noscrape["name"] != $gcontacts[0]["name"]))
 469                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 470                                                 dbesc($noscrape["name"]), dbesc(normalise_link($profile)));
 471
 472                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 473                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 474                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 475
 476                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 477                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 478                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 479
 480                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 481                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 482                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 483
 484                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["name"]))
 485                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 486                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 487
 488                                 if (isset($noscrape["tags"]))
 489                                         $keywords = implode(" ", $noscrape["tags"]);
 490                                 else
 491                                         $keywords = "";
 492
 493                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 494                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 495                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 496
 497                                 $location = $noscrape["locality"];
 498
 499                                 if ($noscrape["region"] != "") {
 500                                         if ($location != "")
 501                                                 $location .= ", ";
 502
 503                                         $location .= $noscrape["region"];
 504                                 }
 505
 506                                 if ($noscrape["country-name"] != "") {
 507                                         if ($location != "")
 508                                                 $location .= ", ";
 509
 510                                         $location .= $noscrape["country-name"];
 511                                 }
 512
 513                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 514                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 515                                                 dbesc($location), dbesc(normalise_link($profile)));
 516
 517                                 // If we got data from noscrape then mark the contact as reachable
 518                                 if (is_array($noscrape) AND count($noscrape))
 519                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 520                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 521
 522                                 return $noscrape["updated"];
 523                         }
 524                 }
 525         }
 526
 527         // If we only can poll the feed, then we only do this once a while
 528         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 529                 return $gcontacts[0]["updated"];
 530
 531         $data = probe_url($profile);
 532
 533         if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
 534                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 535                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 536                 return false;
 537         }
 538
 539         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 540                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 541                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 542
 543         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 544                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 545                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 546
 547         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 548                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 549                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 550
 551         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 552                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 553                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 554
 555         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 556                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 557                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 558
 559         $feedret = z_fetch_url($data["poll"]);
 560
 561         if (!$feedret["success"]) {
 562                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 563                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 564                 return false;
 565         }
 566
 567         $doc = new DOMDocument();
 568         @$doc->loadXML($feedret["body"]);
 569
 570         $xpath = new DomXPath($doc);
 571         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 572
 573         $entries = $xpath->query('/atom:feed/atom:entry');
 574
 575         $last_updated = "";
 576
 577         foreach ($entries AS $entry) {
 578                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 579                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 580
 581                 if ($last_updated < $published)
 582                         $last_updated = $published;
 583
 584                 if ($last_updated < $updated)
 585                         $last_updated = $updated;
 586         }
 587
 588         // Maybe there aren't any entries. Then check if it is a valid feed
 589         if ($last_updated == "")
 590                 if ($xpath->query('/atom:feed')->length > 0)
 591                         $last_updated = "0000-00-00 00:00:00";
 592
 593         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 594                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 595
 596         if (($gcontacts[0]["generation"] == 0))
 597                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 598                         dbesc(normalise_link($profile)));
 599
 600         return($last_updated);
 601 }
 602
 603 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 604         $now = strtotime(datetime_convert());
 605
 606         if ($updated > $last_contact)
 607                 $contact_time = strtotime($updated);
 608         else
 609                 $contact_time = strtotime($last_contact);
 610
 611         $failure_time = strtotime($last_failure);
 612         $created_time = strtotime($created);
 613
 614         // If there is no "created" time then use the current time
 615         if ($created_time <= 0)
 616                 $created_time = $now;
 617
 618         // If the last contact was less than 24 hours then don't update
 619         if (($now - $contact_time) < (60 * 60 * 24))
 620                 return false;
 621
 622         // If the last failure was less than 24 hours then don't update
 623         if (($now - $failure_time) < (60 * 60 * 24))
 624                 return false;
 625
 626         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 627         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 628         //      return false;
 629
 630         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 631         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 632                 return false;
 633
 634         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 635         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 636                 return false;
 637
 638         return true;
 639 }
 640
 641 function poco_to_boolean($val) {
 642         if (($val == "true") OR ($val == 1))
 643                 return(true);
 644         if (($val == "false") OR ($val == 0))
 645                 return(false);
 646
 647         return ($val);
 648 }
 649
 650 function poco_check_server($server_url, $network = "", $force = false) {
 651
 652         if ($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 unknown. Start discovery.", 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                 $last_failure = datetime_convert();
 712                 $failure = true;
 713         } elseif ($network == NETWORK_DIASPORA)
 714                 $last_contact = datetime_convert();
 715
 716         if (!$failure) {
 717                 // Test for Diaspora
 718                 $serverret = z_fetch_url($server_url);
 719
 720                 $lines = explode("\n",$serverret["header"]);
 721                 if(count($lines))
 722                         foreach($lines as $line) {
 723                                 $line = trim($line);
 724                                 if(stristr($line,'X-Diaspora-Version:')) {
 725                                         $platform = "Diaspora";
 726                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 727                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 728                                         $network = NETWORK_DIASPORA;
 729                                 }
 730                         }
 731         }
 732
 733         if (!$failure) {
 734                 // Test for Statusnet
 735                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 736                 // The "not implemented" is a special treatment for really, really old Friendica versions
 737                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 738                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 739                         $platform = "StatusNet";
 740                         $version = trim($serverret["body"], '"');
 741                         $network = NETWORK_OSTATUS;
 742                 }
 743
 744                 // Test for GNU Social
 745                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 746                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 747                         $platform = "GNU Social";
 748                         $version = trim($serverret["body"], '"');
 749                         $network = NETWORK_OSTATUS;
 750                 }
 751
 752                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 753                 if ($serverret["success"]) {
 754                         $data = json_decode($serverret["body"]);
 755
 756                         if (isset($data->site->server)) {
 757                                 $last_contact = datetime_convert();
 758
 759                                 if (isset($data->site->hubzilla)) {
 760                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 761                                         $version = $data->site->hubzilla->RED_VERSION;
 762                                         $network = NETWORK_DIASPORA;
 763                                 }
 764                                 if (isset($data->site->redmatrix)) {
 765                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 766                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 767                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 768                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 769
 770                                         $version = $data->site->redmatrix->RED_VERSION;
 771                                         $network = NETWORK_DIASPORA;
 772                                 }
 773                                 if (isset($data->site->friendica)) {
 774                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 775                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 776                                         $network = NETWORK_DFRN;
 777                                 }
 778
 779                                 $site_name = $data->site->name;
 780
 781                                 $data->site->closed = poco_to_boolean($data->site->closed);
 782                                 $data->site->private = poco_to_boolean($data->site->private);
 783                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 784
 785                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 786                                         $register_policy = REGISTER_APPROVE;
 787                                 elseif (!$data->site->closed AND !$data->site->private)
 788                                         $register_policy = REGISTER_OPEN;
 789                                 else
 790                                         $register_policy = REGISTER_CLOSED;
 791                         }
 792                 }
 793         }
 794
 795         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 796         if (!$failure) {
 797                 $serverret = z_fetch_url($server_url."/statistics.json");
 798                 if ($serverret["success"]) {
 799                         $data = json_decode($serverret["body"]);
 800                         if ($version == "")
 801                                 $version = $data->version;
 802
 803                         $site_name = $data->name;
 804
 805                         if (isset($data->network) AND ($platform == ""))
 806                                 $platform = $data->network;
 807
 808                         if ($platform == "Diaspora")
 809                                 $network = NETWORK_DIASPORA;
 810
 811                         if ($data->registrations_open)
 812                                 $register_policy = REGISTER_OPEN;
 813                         else
 814                                 $register_policy = REGISTER_CLOSED;
 815
 816                         if (isset($data->version))
 817                                 $last_contact = datetime_convert();
 818                 }
 819         }
 820
 821         // Check for noscrape
 822         // Friendica servers could be detected as OStatus servers
 823         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 824                 $serverret = z_fetch_url($server_url."/friendica/json");
 825
 826                 if (!$serverret["success"])
 827                         $serverret = z_fetch_url($server_url."/friendika/json");
 828
 829                 if ($serverret["success"]) {
 830                         $data = json_decode($serverret["body"]);
 831
 832                         if (isset($data->version)) {
 833                                 $last_contact = datetime_convert();
 834                                 $network = NETWORK_DFRN;
 835
 836                                 $noscrape = $data->no_scrape_url;
 837                                 $version = $data->version;
 838                                 $site_name = $data->site_name;
 839                                 $info = $data->info;
 840                                 $register_policy_str = $data->register_policy;
 841                                 $platform = $data->platform;
 842
 843                                 switch ($register_policy_str) {
 844                                         case "REGISTER_CLOSED":
 845                                                 $register_policy = REGISTER_CLOSED;
 846                                                 break;
 847                                         case "REGISTER_APPROVE":
 848                                                 $register_policy = REGISTER_APPROVE;
 849                                                 break;
 850                                         case "REGISTER_OPEN":
 851                                                 $register_policy = REGISTER_OPEN;
 852                                                 break;
 853                                 }
 854                         }
 855                 }
 856         }
 857
 858         // Look for poco
 859         if (!$failure) {
 860                 $serverret = z_fetch_url($server_url."/poco");
 861                 if ($serverret["success"]) {
 862                         $data = json_decode($serverret["body"]);
 863                         if (isset($data->totalResults)) {
 864                                 $poco = $server_url."/poco";
 865                                 $last_contact = datetime_convert();
 866                         }
 867                 }
 868         }
 869
 870         // Check again if the server exists
 871         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 872
 873         if ($servers)
 874                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 875                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 876                         dbesc($server_url),
 877                         dbesc($version),
 878                         dbesc($site_name),
 879                         dbesc($info),
 880                         intval($register_policy),
 881                         dbesc($poco),
 882                         dbesc($noscrape),
 883                         dbesc($network),
 884                         dbesc($platform),
 885                         dbesc($last_contact),
 886                         dbesc($last_failure),
 887                         dbesc(normalise_link($server_url))
 888                 );
 889         else
 890                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 891                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 892                                 dbesc($server_url),
 893                                 dbesc(normalise_link($server_url)),
 894                                 dbesc($version),
 895                                 dbesc($site_name),
 896                                 dbesc($info),
 897                                 intval($register_policy),
 898                                 dbesc($poco),
 899                                 dbesc($noscrape),
 900                                 dbesc($network),
 901                                 dbesc($platform),
 902                                 dbesc(datetime_convert()),
 903                                 dbesc($last_contact),
 904                                 dbesc($last_failure),
 905                                 dbesc(datetime_convert())
 906                 );
 907
 908         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 909
 910         return !$failure;
 911 }
 912
 913 function poco_contact_from_body($body, $created, $cid, $uid) {
 914         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 915                 function ($match) use ($created, $cid, $uid){
 916                         return(sub_poco_from_share($match, $created, $cid, $uid));
 917                 }, $body);
 918 }
 919
 920 function sub_poco_from_share($share, $created, $cid, $uid) {
 921         $profile = "";
 922         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 923         if ($matches[1] != "")
 924                 $profile = $matches[1];
 925
 926         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 927         if ($matches[1] != "")
 928                 $profile = $matches[1];
 929
 930         if ($profile == "")
 931                 return;
 932
 933         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 934         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 935 }
 936
 937 function poco_store($item) {
 938
 939         // Isn't it public?
 940         if ($item['private'])
 941                 return;
 942
 943         // Or is it from a network where we don't store the global contacts?
 944         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 945                 return;
 946
 947         // Is it a global copy?
 948         $store_gcontact = ($item["uid"] == 0);
 949
 950         // Is it a comment on a global copy?
 951         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 952                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 953                 $store_gcontact = count($q);
 954         }
 955
 956         if (!$store_gcontact)
 957                 return;
 958
 959         // "3" means: We don't know this contact directly (Maybe a reshared item)
 960         $generation = 3;
 961         $network = "";
 962         $profile_url = $item["author-link"];
 963
 964         // Is it a user from our server?
 965         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 966                 dbesc(normalise_link($item["author-link"])));
 967         if (count($q)) {
 968                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 969                 $generation = 1;
 970                 $network = NETWORK_DFRN;
 971         } else { // Is it a contact from a user on our server?
 972                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 973                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 974                         dbesc(normalise_link($item["author-link"])),
 975                         dbesc(normalise_link($item["author-link"])),
 976                         dbesc($item["author-link"]),
 977                         dbesc(NETWORK_STATUSNET));
 978                 if (count($q)) {
 979                         $generation = 2;
 980                         $network = $q[0]["network"];
 981                         $profile_url = $q[0]["url"];
 982                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 983                 }
 984         }
 985
 986         if ($generation == 3)
 987                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 988
 989         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
 990
 991         // Maybe its a body with a shared item? Then extract a global contact from it.
 992         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
 993 }
 994
 995 function count_common_friends($uid,$cid) {
 996
 997         $r = q("SELECT count(*) as `total`
 998                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 999                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1000                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1001                 intval($cid),
1002                 intval($uid),
1003                 intval($uid),
1004                 intval($cid)
1005         );
1006
1007 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1008         if(count($r))
1009                 return $r[0]['total'];
1010         return 0;
1011
1012 }
1013
1014
1015 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1016
1017         if($shuffle)
1018                 $sql_extra = " order by rand() ";
1019         else
1020                 $sql_extra = " order by `gcontact`.`name` asc ";
1021
1022         $r = q("SELECT `gcontact`.*
1023                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1024                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1025                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
1026                 $sql_extra limit %d, %d",
1027                 intval($cid),
1028                 intval($uid),
1029                 intval($uid),
1030                 intval($cid),
1031                 intval($start),
1032                 intval($limit)
1033         );
1034
1035         return $r;
1036
1037 }
1038
1039
1040 function count_common_friends_zcid($uid,$zcid) {
1041
1042         $r = q("SELECT count(*) as `total`
1043                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1044                 where `glink`.`zcid` = %d
1045                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1046                 intval($zcid),
1047                 intval($uid)
1048         );
1049
1050         if(count($r))
1051                 return $r[0]['total'];
1052         return 0;
1053
1054 }
1055
1056 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1057
1058         if($shuffle)
1059                 $sql_extra = " order by rand() ";
1060         else
1061                 $sql_extra = " order by `gcontact`.`name` asc ";
1062
1063         $r = q("SELECT `gcontact`.*
1064                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1065                 where `glink`.`zcid` = %d
1066                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1067                 $sql_extra limit %d, %d",
1068                 intval($zcid),
1069                 intval($uid),
1070                 intval($start),
1071                 intval($limit)
1072         );
1073
1074         return $r;
1075
1076 }
1077
1078
1079 function count_all_friends($uid,$cid) {
1080
1081         $r = q("SELECT count(*) as `total`
1082                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1083                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1084                 intval($cid),
1085                 intval($uid)
1086         );
1087
1088         if(count($r))
1089                 return $r[0]['total'];
1090         return 0;
1091
1092 }
1093
1094
1095 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1096
1097         $r = q("SELECT `gcontact`.*
1098                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1099                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1100                 order by `gcontact`.`name` asc LIMIT %d, %d ",
1101                 intval($cid),
1102                 intval($uid),
1103                 intval($start),
1104                 intval($limit)
1105         );
1106
1107         return $r;
1108 }
1109
1110
1111
1112 function suggestion_query($uid, $start = 0, $limit = 80) {
1113
1114         if(! $uid)
1115                 return array();
1116
1117         $network = array(NETWORK_DFRN);
1118
1119         if (get_config('system','diaspora_enabled'))
1120                 $network[] = NETWORK_DIASPORA;
1121
1122         if (!get_config('system','ostatus_disabled'))
1123                 $network[] = NETWORK_OSTATUS;
1124
1125         $sql_network = implode("', '", $network);
1126         //$sql_network = "'".$sql_network."', ''";
1127         $sql_network = "'".$sql_network."'";
1128
1129         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1130                 INNER JOIN glink on glink.gcid = gcontact.id
1131                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1132                 and not gcontact.name in ( select name from contact where uid = %d )
1133                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1134                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1135                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1136                 AND `gcontact`.`network` IN (%s)
1137                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1138                 intval($uid),
1139                 intval($uid),
1140                 intval($uid),
1141                 intval($uid),
1142                 $sql_network,
1143                 intval($start),
1144                 intval($limit)
1145         );
1146
1147         if(count($r) && count($r) >= ($limit -1))
1148                 return $r;
1149
1150         $r2 = q("SELECT gcontact.* from gcontact
1151                 INNER JOIN glink on glink.gcid = gcontact.id
1152                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1153                 and not gcontact.name in ( select name from contact where uid = %d )
1154                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1155                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1156                 AND `gcontact`.`network` IN (%s)
1157                 order by rand() limit %d, %d ",
1158                 intval($uid),
1159                 intval($uid),
1160                 intval($uid),
1161                 $sql_network,
1162                 intval($start),
1163                 intval($limit)
1164         );
1165
1166         $list = array();
1167         foreach ($r2 AS $suggestion)
1168                 $list[$suggestion["nurl"]] = $suggestion;
1169
1170         foreach ($r AS $suggestion)
1171                 $list[$suggestion["nurl"]] = $suggestion;
1172
1173         return $list;
1174 }
1175
1176 function update_suggestions() {
1177
1178         $a = get_app();
1179
1180         $done = array();
1181
1182         // To-Do: Check if it is really neccessary to poll the own server
1183         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1184
1185         $done[] = $a->get_baseurl() . '/poco';
1186
1187         if(strlen(get_config('system','directory_submit_url'))) {
1188                 $x = fetch_url('http://dir.friendica.com/pubsites');
1189                 if($x) {
1190                         $j = json_decode($x);
1191                         if($j->entries) {
1192                                 foreach($j->entries as $entry) {
1193
1194                                         poco_check_server($entry->url);
1195
1196                                         $url = $entry->url . '/poco';
1197                                         if(! in_array($url,$done))
1198                                                 poco_load(0,0,0,$entry->url . '/poco');
1199                                 }
1200                         }
1201                 }
1202         }
1203
1204         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1205         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1206                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1207         );
1208
1209         if(count($r)) {
1210                 foreach($r as $rr) {
1211                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1212                         if(! in_array($base,$done))
1213                                 poco_load(0,0,0,$base);
1214                 }
1215         }
1216 }
1217
1218 function poco_discover($complete = false) {
1219
1220         $no_of_queries = 5;
1221
1222         $last_update = date("c", time() - (60 * 60 * 6)); // 24
1223         $last_update = date("c", time() - (60 * 60 * 24)); // 24
1224
1225         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` > `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1226         if ($r)
1227                 foreach ($r AS $server) {
1228
1229                         if (!poco_check_server($server["url"], $server["network"]))
1230                                 continue;
1231
1232                         // Fetch all users from the other server
1233                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1234
1235                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1236
1237                         $retdata = z_fetch_url($url);
1238                         if ($retdata["success"]) {
1239                                 $data = json_decode($retdata["body"]);
1240
1241                                 poco_discover_server($data, 2);
1242
1243                                 if (get_config('system','poco_discovery') > 1) {
1244
1245                                         $timeframe = get_config('system','poco_discovery_since');
1246                                         if ($timeframe == 0)
1247                                                 $timeframe = 30;
1248
1249                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1250
1251                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1252                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1253
1254                                         $success = false;
1255
1256                                         $retdata = z_fetch_url($url);
1257                                         if ($retdata["success"]) {
1258                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1259                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1260                                         }
1261
1262                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1263                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1264                                                 poco_discover_server_users($data, $server);
1265                                         }
1266                                 }
1267
1268                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1269                                 if (!$complete AND (--$no_of_queries == 0))
1270                                         break;
1271                         } else  // If the server hadn't replied correctly, then force a sanity check
1272                                 poco_check_server($server["url"], $server["network"], true);
1273                 }
1274 }
1275
1276 function poco_discover_server_users($data, $server) {
1277
1278         if (!isset($data->entry))
1279                 return;
1280
1281         foreach ($data->entry AS $entry) {
1282                 $username = "";
1283                 if (isset($entry->urls)) {
1284                         foreach($entry->urls as $url)
1285                                 if($url->type == 'profile') {
1286                                         $profile_url = $url->value;
1287                                         $urlparts = parse_url($profile_url);
1288                                         $username = end(explode("/", $urlparts["path"]));
1289                                 }
1290                 }
1291                 if ($username != "") {
1292                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1293
1294                         // Fetch all contacts from a given user from the other server
1295                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1296
1297                         $retdata = z_fetch_url($url);
1298                         if ($retdata["success"])
1299                                 poco_discover_server(json_decode($retdata["body"]), 3);
1300                 }
1301         }
1302 }
1303
1304 function poco_discover_server($data, $default_generation = 0) {
1305
1306         if (!isset($data->entry) OR !count($data->entry))
1307                 return false;
1308
1309         $success = false;
1310
1311         foreach ($data->entry AS $entry) {
1312                 $profile_url = '';
1313                 $profile_photo = '';
1314                 $connect_url = '';
1315                 $name = '';
1316                 $network = '';
1317                 $updated = '0000-00-00 00:00:00';
1318                 $location = '';
1319                 $about = '';
1320                 $keywords = '';
1321                 $gender = '';
1322                 $generation = $default_generation;
1323
1324                 $name = $entry->displayName;
1325
1326                 if(isset($entry->urls)) {
1327                         foreach($entry->urls as $url) {
1328                                 if($url->type == 'profile') {
1329                                         $profile_url = $url->value;
1330                                         continue;
1331                                 }
1332                                 if($url->type == 'webfinger') {
1333                                         $connect_url = str_replace('acct:' , '', $url->value);
1334                                         continue;
1335                                 }
1336                         }
1337                 }
1338
1339                 if(isset($entry->photos)) {
1340                         foreach($entry->photos as $photo) {
1341                                 if($photo->type == 'profile') {
1342                                         $profile_photo = $photo->value;
1343                                         continue;
1344                                 }
1345                         }
1346                 }
1347
1348                 if(isset($entry->updated))
1349                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1350
1351                 if(isset($entry->network))
1352                         $network = $entry->network;
1353
1354                 if(isset($entry->currentLocation))
1355                         $location = $entry->currentLocation;
1356
1357                 if(isset($entry->aboutMe))
1358                         $about = html2bbcode($entry->aboutMe);
1359
1360                 if(isset($entry->gender))
1361                         $gender = $entry->gender;
1362
1363                 if(isset($entry->generation) AND ($entry->generation > 0))
1364                         $generation = ++$entry->generation;
1365
1366                 if(isset($entry->tags))
1367                         foreach($entry->tags as $tag)
1368                                 $keywords = implode(", ", $tag);
1369
1370                 if ($generation > 0) {
1371                         $success = true;
1372
1373                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1374                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1375                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1376                 }
1377         }
1378         return $success;
1379 }
1380 ?>