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