include/socgraph.php

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