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