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 require_once("include/Contact.php");
  14 require_once("include/Photo.php");
  15
  16 /*
  17  * poco_load
  18  *
  19  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  20  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  21  * if anything (name or photo) has changed.
  22  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  23  *
  24  * Once the global contact is stored add (if necessary) the contact linkage which associates
  25  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  26  * pointing to the same global contact id.
  27  *
  28  */
  29
  30
  31
  32
  33 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  34
  35         $a = get_app();
  36
  37         if($cid) {
  38                 if((! $url) || (! $uid)) {
  39                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  40                                 intval($cid)
  41                         );
  42                         if(count($r)) {
  43                                 $url = $r[0]['poco'];
  44                                 $uid = $r[0]['uid'];
  45                         }
  46                 }
  47                 if(! $uid)
  48                         return;
  49         }
  50
  51         if(! $url)
  52                 return;
  53
  54         $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') ;
  55
  56         logger('poco_load: ' . $url, LOGGER_DEBUG);
  57
  58         $s = fetch_url($url);
  59
  60         logger('poco_load: returns ' . $s, LOGGER_DATA);
  61
  62         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  63
  64         if(($a->get_curl_code() > 299) || (! $s))
  65                 return;
  66
  67         $j = json_decode($s);
  68
  69         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  70
  71         if(! isset($j->entry))
  72                 return;
  73
  74         $total = 0;
  75         foreach($j->entry as $entry) {
  76
  77                 $total ++;
  78                 $profile_url = '';
  79                 $profile_photo = '';
  80                 $connect_url = '';
  81                 $name = '';
  82                 $network = '';
  83                 $updated = '0000-00-00 00:00:00';
  84                 $location = '';
  85                 $about = '';
  86                 $keywords = '';
  87                 $gender = '';
  88                 $generation = 0;
  89
  90                 $name = $entry->displayName;
  91
  92                 if(isset($entry->urls)) {
  93                         foreach($entry->urls as $url) {
  94                                 if($url->type == 'profile') {
  95                                         $profile_url = $url->value;
  96                                         continue;
  97                                 }
  98                                 if($url->type == 'webfinger') {
  99                                         $connect_url = str_replace('acct:' , '', $url->value);
 100                                         continue;
 101                                 }
 102                         }
 103                 }
 104                 if(isset($entry->photos)) {
 105                         foreach($entry->photos as $photo) {
 106                                 if($photo->type == 'profile') {
 107                                         $profile_photo = $photo->value;
 108                                         continue;
 109                                 }
 110                         }
 111                 }
 112
 113                 if(isset($entry->updated))
 114                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 115
 116                 if(isset($entry->network))
 117                         $network = $entry->network;
 118
 119                 if(isset($entry->currentLocation))
 120                         $location = $entry->currentLocation;
 121
 122                 if(isset($entry->aboutMe))
 123                         $about = html2bbcode($entry->aboutMe);
 124
 125                 if(isset($entry->gender))
 126                         $gender = $entry->gender;
 127
 128                 if(isset($entry->generation) AND ($entry->generation > 0))
 129                         $generation = ++$entry->generation;
 130
 131                 if(isset($entry->tags))
 132                         foreach($entry->tags as $tag)
 133                                 $keywords = implode(", ", $tag);
 134
 135                 // If you query a Friendica server for its profiles, the network has to be Friendica
 136                 /// TODO It could also be a Redmatrix server
 137                 //if ($uid == 0)
 138                 //      $network = NETWORK_DFRN;
 139
 140                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 141
 142                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 143                 // Deactivated because we now update Friendica contacts in dfrn.php
 144                 //if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 145                 //      q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 146                 //              WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 147                 //              dbesc($location),
 148                 //              dbesc($about),
 149                 //              dbesc($keywords),
 150                 //              dbesc($gender),
 151                 //              dbesc(normalise_link($profile_url)),
 152                 //              dbesc(NETWORK_DFRN));
 153         }
 154         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 155
 156         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 157                 intval($cid),
 158                 intval($uid),
 159                 intval($zcid)
 160         );
 161
 162 }
 163
 164 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 165
 166         $a = get_app();
 167
 168         // Generation:
 169         //  0: No definition
 170         //  1: Profiles on this server
 171         //  2: Contacts of profiles on this server
 172         //  3: Contacts of contacts of profiles on this server
 173         //  4: ...
 174
 175         $gcid = "";
 176
 177         if ($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 $gcid;
 187
 188         // Don't store the statusnet connector as network
 189         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 190         if ($network == NETWORK_STATUSNET)
 191                 $network = "";
 192
 193         // Assure that there are no parameter fragments in the profile url
 194         if (in_array($network, array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, "")))
 195                 $profile_url = clean_contact_url($profile_url);
 196
 197         $alternate = poco_alternate_ostatus_url($profile_url);
 198
 199         $orig_updated = $updated;
 200
 201         // The global contacts should contain the original picture, not the cached one
 202         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 203                 $profile_photo = "";
 204
 205         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 206                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 207         );
 208         if(count($r))
 209                 $network = $r[0]["network"];
 210
 211         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 212                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 213                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 214                 );
 215                 if(count($r)) {
 216                         $network = $r[0]["network"];
 217                         //$profile_url = $r[0]["url"];
 218                 }
 219         }
 220
 221         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 222                 dbesc(normalise_link($profile_url))
 223         );
 224
 225         if (count($x)) {
 226                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 227                         $network = $x[0]["network"];
 228
 229                 if ($updated == "0000-00-00 00:00:00")
 230                         $updated = $x[0]["updated"];
 231
 232                 $created = $x[0]["created"];
 233                 $server_url = $x[0]["server_url"];
 234                 $nick = $x[0]["nick"];
 235                 $addr = $x[0]["addr"];
 236                 $alias =  $x[0]["alias"];
 237                 $notify =  $x[0]["notify"];
 238         } else {
 239                 $created = "0000-00-00 00:00:00";
 240                 $server_url = "";
 241
 242                 $urlparts = parse_url($profile_url);
 243                 $nick = end(explode("/", $urlparts["path"]));
 244                 $addr = "";
 245                 $alias = "";
 246                 $notify = "";
 247         }
 248
 249         if ((($network == "") OR ($name == "") OR ($addr == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 250                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 251                 $data = probe_url($profile_url);
 252
 253                 $orig_profile = $profile_url;
 254
 255                 $network = $data["network"];
 256                 $name = $data["name"];
 257                 $nick = $data["nick"];
 258                 $addr = $data["addr"];
 259                 $alias = $data["alias"];
 260                 $notify = $data["notify"];
 261                 $profile_url = $data["url"];
 262                 $profile_photo = $data["photo"];
 263                 $server_url = $data["baseurl"];
 264
 265                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 266                         // Delete the old entry - if it exists
 267                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 268                         if ($r) {
 269                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 270                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 271                         }
 272
 273                         // possibly create a new entry
 274                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 275                 }
 276         }
 277
 278         if ($alternate AND ($network == NETWORK_OSTATUS))
 279                 return $gcid;
 280
 281         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 282                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 283                         dbesc($network),
 284                         dbesc(normalise_link($profile_url))
 285                 );
 286         }
 287
 288         if (($name == "") OR ($profile_photo == ""))
 289                 return $gcid;
 290
 291         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 292                 return $gcid;
 293
 294         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 295
 296         poco_check_server($server_url, $network);
 297
 298         $gcontact = array("url" => $profile_url,
 299                         "addr" => $addr,
 300                         "alias" => $alias,
 301                         "name" => $name,
 302                         "network" => $network,
 303                         "photo" => $profile_photo,
 304                         "about" => $about,
 305                         "location" => $location,
 306                         "gender" => $gender,
 307                         "keywords" => $keywords,
 308                         "server_url" => $server_url,
 309                         "connect" => $connect_url,
 310                         "notify" => $notify,
 311                         "updated" => $updated,
 312                         "generation" => $generation);
 313
 314         $gcid = update_gcontact($gcontact);
 315
 316         if(!$gcid)
 317                 return $gcid;
 318
 319         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 320                 intval($cid),
 321                 intval($uid),
 322                 intval($gcid),
 323                 intval($zcid)
 324         );
 325         if(! count($r)) {
 326                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 327                         intval($cid),
 328                         intval($uid),
 329                         intval($gcid),
 330                         intval($zcid),
 331                         dbesc(datetime_convert())
 332                 );
 333         } else {
 334                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 335                         dbesc(datetime_convert()),
 336                         intval($cid),
 337                         intval($uid),
 338                         intval($gcid),
 339                         intval($zcid)
 340                 );
 341         }
 342
 343         return $gcid;
 344 }
 345
 346 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 347
 348         if ($server == "")
 349                 $server = poco_detect_server($profile);
 350
 351         if ($server == "")
 352                 return true;
 353
 354         return poco_check_server($server, $network, $force);
 355 }
 356
 357 function poco_detect_server($profile) {
 358
 359         // Try to detect the server path based upon some known standard paths
 360         $server_url = "";
 361
 362         if ($server_url == "") {
 363                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 364                 if ($friendica != $profile) {
 365                         $server_url = $friendica;
 366                         $network = NETWORK_DFRN;
 367                 }
 368         }
 369
 370         if ($server_url == "") {
 371                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 372                 if ($diaspora != $profile) {
 373                         $server_url = $diaspora;
 374                         $network = NETWORK_DIASPORA;
 375                 }
 376         }
 377
 378         if ($server_url == "") {
 379                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 380                 if ($red != $profile) {
 381                         $server_url = $red;
 382                         $network = NETWORK_DIASPORA;
 383                 }
 384         }
 385
 386         return $server_url;
 387 }
 388
 389 function poco_alternate_ostatus_url($url) {
 390         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 391 }
 392
 393 function poco_last_updated($profile, $force = false) {
 394
 395         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 396                         dbesc(normalise_link($profile)));
 397
 398         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 399                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 400                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 401
 402         if ($gcontacts[0]["server_url"] != "")
 403                 $server_url = $gcontacts[0]["server_url"];
 404         else
 405                 $server_url = poco_detect_server($profile);
 406
 407         if ($server_url != "") {
 408                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 409
 410                         if ($force)
 411                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 412                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 413
 414                         return false;
 415                 }
 416
 417                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 418                         dbesc($server_url), dbesc(normalise_link($profile)));
 419         }
 420
 421         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 422                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 423                         dbesc(normalise_link($server_url)));
 424
 425                 if ($server)
 426                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 427                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 428                 else
 429                         return;
 430         }
 431
 432         // noscrape is really fast so we don't cache the call.
 433         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 434
 435                 //  Use noscrape if possible
 436                 $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 437
 438                 if ($server) {
 439                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 440
 441                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 442
 443                                 $noscrape = json_decode($noscraperet["body"], true);
 444
 445                                 if (is_array($noscrape)) {
 446                                         $contact = array("url" => $profile,
 447                                                         "network" => $server[0]["network"],
 448                                                         "generation" => $gcontacts[0]["generation"]);
 449
 450                                         $contact["name"] = $noscrape["fn"];
 451                                         $contact["community"] = $noscrape["comm"];
 452
 453                                         if (isset($noscrape["tags"])) {
 454                                                 $keywords = implode(" ", $noscrape["tags"]);
 455                                                 if ($keywords != "")
 456                                                         $contact["keywords"] = $keywords;
 457                                         }
 458
 459                                         $location = formatted_location($noscrape);
 460                                         if ($location)
 461                                                 $contact["location"] = $location;
 462
 463                                         $contact["notify"] = $noscrape["dfrn-notify"];
 464
 465                                         // Remove all fields that are not present in the gcontact table
 466                                         unset($noscrape["fn"]);
 467                                         unset($noscrape["key"]);
 468                                         unset($noscrape["homepage"]);
 469                                         unset($noscrape["comm"]);
 470                                         unset($noscrape["tags"]);
 471                                         unset($noscrape["locality"]);
 472                                         unset($noscrape["region"]);
 473                                         unset($noscrape["country-name"]);
 474                                         unset($noscrape["contacts"]);
 475                                         unset($noscrape["dfrn-request"]);
 476                                         unset($noscrape["dfrn-confirm"]);
 477                                         unset($noscrape["dfrn-notify"]);
 478                                         unset($noscrape["dfrn-poll"]);
 479
 480                                         $contact = array_merge($contact, $noscrape);
 481
 482                                         update_gcontact($contact);
 483
 484                                         return $noscrape["updated"];
 485                                 }
 486                         }
 487                 }
 488         }
 489
 490         // If we only can poll the feed, then we only do this once a while
 491         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 492                 return $gcontacts[0]["updated"];
 493
 494         $data = probe_url($profile);
 495
 496         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 497         // Then check the other link and delete this one
 498         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 499                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 500                 (normalise_link($profile) != normalise_link($data["url"]))) {
 501
 502                 // Delete the old entry
 503                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 504                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 505
 506                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 507                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 508
 509                 poco_last_updated($data["url"], $force);
 510
 511                 return false;
 512         }
 513
 514         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 515                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 516                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 517                 return false;
 518         }
 519
 520         $contact = array("generation" => $gcontacts[0]["generation"]);
 521
 522         $contact = array_merge($contact, $data);
 523
 524         $contact["server_url"] = $data["baseurl"];
 525
 526         unset($contact["batch"]);
 527         unset($contact["poll"]);
 528         unset($contact["request"]);
 529         unset($contact["confirm"]);
 530         unset($contact["poco"]);
 531         unset($contact["priority"]);
 532         unset($contact["pubkey"]);
 533         unset($contact["baseurl"]);
 534
 535         update_gcontact($contact);
 536
 537         $feedret = z_fetch_url($data["poll"]);
 538
 539         if (!$feedret["success"]) {
 540                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 541                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 542                 return false;
 543         }
 544
 545         $doc = new DOMDocument();
 546         @$doc->loadXML($feedret["body"]);
 547
 548         $xpath = new DomXPath($doc);
 549         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 550
 551         $entries = $xpath->query('/atom:feed/atom:entry');
 552
 553         $last_updated = "";
 554
 555         foreach ($entries AS $entry) {
 556                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 557                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 558
 559                 if ($last_updated < $published)
 560                         $last_updated = $published;
 561
 562                 if ($last_updated < $updated)
 563                         $last_updated = $updated;
 564         }
 565
 566         // Maybe there aren't any entries. Then check if it is a valid feed
 567         if ($last_updated == "")
 568                 if ($xpath->query('/atom:feed')->length > 0)
 569                         $last_updated = "0000-00-00 00:00:00";
 570
 571         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 572                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 573
 574         if (($gcontacts[0]["generation"] == 0))
 575                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 576                         dbesc(normalise_link($profile)));
 577
 578         return($last_updated);
 579 }
 580
 581 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 582         $now = strtotime(datetime_convert());
 583
 584         if ($updated > $last_contact)
 585                 $contact_time = strtotime($updated);
 586         else
 587                 $contact_time = strtotime($last_contact);
 588
 589         $failure_time = strtotime($last_failure);
 590         $created_time = strtotime($created);
 591
 592         // If there is no "created" time then use the current time
 593         if ($created_time <= 0)
 594                 $created_time = $now;
 595
 596         // If the last contact was less than 24 hours then don't update
 597         if (($now - $contact_time) < (60 * 60 * 24))
 598                 return false;
 599
 600         // If the last failure was less than 24 hours then don't update
 601         if (($now - $failure_time) < (60 * 60 * 24))
 602                 return false;
 603
 604         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 605         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 606         //      return false;
 607
 608         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 609         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 610                 return false;
 611
 612         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 613         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 614                 return false;
 615
 616         return true;
 617 }
 618
 619 function poco_to_boolean($val) {
 620         if (($val == "true") OR ($val == 1))
 621                 return(true);
 622         if (($val == "false") OR ($val == 0))
 623                 return(false);
 624
 625         return ($val);
 626 }
 627
 628 function poco_check_server($server_url, $network = "", $force = false) {
 629
 630         // Unify the server address
 631         $server_url = trim($server_url, "/");
 632         $server_url = str_replace("/index.php", "", $server_url);
 633
 634         if ($server_url == "")
 635                 return false;
 636
 637         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 638         if ($servers) {
 639
 640                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 641                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 642                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 643
 644                 $poco = $servers[0]["poco"];
 645                 $noscrape = $servers[0]["noscrape"];
 646
 647                 if ($network == "")
 648                         $network = $servers[0]["network"];
 649
 650                 $last_contact = $servers[0]["last_contact"];
 651                 $last_failure = $servers[0]["last_failure"];
 652                 $version = $servers[0]["version"];
 653                 $platform = $servers[0]["platform"];
 654                 $site_name = $servers[0]["site_name"];
 655                 $info = $servers[0]["info"];
 656                 $register_policy = $servers[0]["register_policy"];
 657
 658                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 659                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 660                         return ($last_contact >= $last_failure);
 661                 }
 662         } else {
 663                 $poco = "";
 664                 $noscrape = "";
 665                 $version = "";
 666                 $platform = "";
 667                 $site_name = "";
 668                 $info = "";
 669                 $register_policy = -1;
 670
 671                 $last_contact = "0000-00-00 00:00:00";
 672                 $last_failure = "0000-00-00 00:00:00";
 673         }
 674         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 675
 676         $failure = false;
 677         $orig_last_failure = $last_failure;
 678
 679         // Check if the page is accessible via SSL.
 680         $server_url = str_replace("http://", "https://", $server_url);
 681         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 682
 683         // Maybe the page is unencrypted only?
 684         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 685         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 686                 $server_url = str_replace("https://", "http://", $server_url);
 687                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 688
 689                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 690         }
 691
 692         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 693                 // Workaround for bad configured servers (known nginx problem)
 694                 if ($serverret["debug"]["http_code"] != "403") {
 695                         $last_failure = datetime_convert();
 696                         $failure = true;
 697                 }
 698         } elseif ($network == NETWORK_DIASPORA)
 699                 $last_contact = datetime_convert();
 700
 701         if (!$failure) {
 702                 // Test for Diaspora
 703                 $serverret = z_fetch_url($server_url);
 704
 705                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 706                         $failure = true;
 707                 else {
 708                         $lines = explode("\n",$serverret["header"]);
 709                         if(count($lines))
 710                                 foreach($lines as $line) {
 711                                         $line = trim($line);
 712                                         if(stristr($line,'X-Diaspora-Version:')) {
 713                                                 $platform = "Diaspora";
 714                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 715                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 716                                                 $network = NETWORK_DIASPORA;
 717                                                 $versionparts = explode("-", $version);
 718                                                 $version = $versionparts[0];
 719                                         }
 720                                 }
 721                 }
 722         }
 723
 724         if (!$failure) {
 725                 // Test for Statusnet
 726                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 727                 // The "not implemented" is a special treatment for really, really old Friendica versions
 728                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 729                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 730                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 731                         $platform = "StatusNet";
 732                         $version = trim($serverret["body"], '"');
 733                         $network = NETWORK_OSTATUS;
 734                 }
 735
 736                 // Test for GNU Social
 737                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 738                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 739                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 740                         $platform = "GNU Social";
 741                         $version = trim($serverret["body"], '"');
 742                         $network = NETWORK_OSTATUS;
 743                 }
 744
 745                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 746                 if ($serverret["success"]) {
 747                         $data = json_decode($serverret["body"]);
 748
 749                         if (isset($data->site->server)) {
 750                                 $last_contact = datetime_convert();
 751
 752                                 if (isset($data->site->hubzilla)) {
 753                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 754                                         $version = $data->site->hubzilla->RED_VERSION;
 755                                         $network = NETWORK_DIASPORA;
 756                                 }
 757                                 if (isset($data->site->redmatrix)) {
 758                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 759                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 760                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 761                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 762
 763                                         $version = $data->site->redmatrix->RED_VERSION;
 764                                         $network = NETWORK_DIASPORA;
 765                                 }
 766                                 if (isset($data->site->friendica)) {
 767                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 768                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 769                                         $network = NETWORK_DFRN;
 770                                 }
 771
 772                                 $site_name = $data->site->name;
 773
 774                                 $data->site->closed = poco_to_boolean($data->site->closed);
 775                                 $data->site->private = poco_to_boolean($data->site->private);
 776                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 777
 778                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 779                                         $register_policy = REGISTER_APPROVE;
 780                                 elseif (!$data->site->closed AND !$data->site->private)
 781                                         $register_policy = REGISTER_OPEN;
 782                                 else
 783                                         $register_policy = REGISTER_CLOSED;
 784                         }
 785                 }
 786         }
 787
 788         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 789         if (!$failure) {
 790                 $serverret = z_fetch_url($server_url."/statistics.json");
 791                 if ($serverret["success"]) {
 792                         $data = json_decode($serverret["body"]);
 793                         if ($version == "")
 794                                 $version = $data->version;
 795
 796                         $site_name = $data->name;
 797
 798                         if (isset($data->network) AND ($platform == ""))
 799                                 $platform = $data->network;
 800
 801                         if ($platform == "Diaspora")
 802                                 $network = NETWORK_DIASPORA;
 803
 804                         if ($data->registrations_open)
 805                                 $register_policy = REGISTER_OPEN;
 806                         else
 807                                 $register_policy = REGISTER_CLOSED;
 808
 809                         if (isset($data->version))
 810                                 $last_contact = datetime_convert();
 811                 }
 812         }
 813
 814         // Check for noscrape
 815         // Friendica servers could be detected as OStatus servers
 816         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 817                 $serverret = z_fetch_url($server_url."/friendica/json");
 818
 819                 if (!$serverret["success"])
 820                         $serverret = z_fetch_url($server_url."/friendika/json");
 821
 822                 if ($serverret["success"]) {
 823                         $data = json_decode($serverret["body"]);
 824
 825                         if (isset($data->version)) {
 826                                 $last_contact = datetime_convert();
 827                                 $network = NETWORK_DFRN;
 828
 829                                 $noscrape = $data->no_scrape_url;
 830                                 $version = $data->version;
 831                                 $site_name = $data->site_name;
 832                                 $info = $data->info;
 833                                 $register_policy_str = $data->register_policy;
 834                                 $platform = $data->platform;
 835
 836                                 switch ($register_policy_str) {
 837                                         case "REGISTER_CLOSED":
 838                                                 $register_policy = REGISTER_CLOSED;
 839                                                 break;
 840                                         case "REGISTER_APPROVE":
 841                                                 $register_policy = REGISTER_APPROVE;
 842                                                 break;
 843                                         case "REGISTER_OPEN":
 844                                                 $register_policy = REGISTER_OPEN;
 845                                                 break;
 846                                 }
 847                         }
 848                 }
 849         }
 850
 851         // Look for poco
 852         if (!$failure) {
 853                 $serverret = z_fetch_url($server_url."/poco");
 854                 if ($serverret["success"]) {
 855                         $data = json_decode($serverret["body"]);
 856                         if (isset($data->totalResults)) {
 857                                 $poco = $server_url."/poco";
 858                                 $last_contact = datetime_convert();
 859                         }
 860                 }
 861         }
 862
 863         // Check again if the server exists
 864         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 865
 866         $version = strip_tags($version);
 867         $site_name = strip_tags($site_name);
 868         $info = strip_tags($info);
 869         $platform = strip_tags($platform);
 870
 871         if ($servers)
 872                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 873                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 874                         dbesc($server_url),
 875                         dbesc($version),
 876                         dbesc($site_name),
 877                         dbesc($info),
 878                         intval($register_policy),
 879                         dbesc($poco),
 880                         dbesc($noscrape),
 881                         dbesc($network),
 882                         dbesc($platform),
 883                         dbesc($last_contact),
 884                         dbesc($last_failure),
 885                         dbesc(normalise_link($server_url))
 886                 );
 887         else
 888                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 889                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 890                                 dbesc($server_url),
 891                                 dbesc(normalise_link($server_url)),
 892                                 dbesc($version),
 893                                 dbesc($site_name),
 894                                 dbesc($info),
 895                                 intval($register_policy),
 896                                 dbesc($poco),
 897                                 dbesc($noscrape),
 898                                 dbesc($network),
 899                                 dbesc($platform),
 900                                 dbesc(datetime_convert()),
 901                                 dbesc($last_contact),
 902                                 dbesc($last_failure),
 903                                 dbesc(datetime_convert())
 904                 );
 905
 906         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 907
 908         return !$failure;
 909 }
 910
 911 function count_common_friends($uid,$cid) {
 912
 913         $r = q("SELECT count(*) as `total`
 914                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 915                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 916                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 917                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 918                 intval($cid),
 919                 intval($uid),
 920                 intval($uid),
 921                 intval($cid)
 922         );
 923
 924 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
 925         if(count($r))
 926                 return $r[0]['total'];
 927         return 0;
 928
 929 }
 930
 931
 932 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
 933
 934         if($shuffle)
 935                 $sql_extra = " order by rand() ";
 936         else
 937                 $sql_extra = " order by `gcontact`.`name` asc ";
 938
 939         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
 940                 FROM `glink`
 941                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 942                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 943                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 944                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 945                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 946                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 947                         $sql_extra LIMIT %d, %d",
 948                 intval($cid),
 949                 intval($uid),
 950                 intval($uid),
 951                 intval($cid),
 952                 intval($start),
 953                 intval($limit)
 954         );
 955
 956         return $r;
 957
 958 }
 959
 960
 961 function count_common_friends_zcid($uid,$zcid) {
 962
 963         $r = q("SELECT count(*) as `total`
 964                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 965                 where `glink`.`zcid` = %d
 966                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 967                 intval($zcid),
 968                 intval($uid)
 969         );
 970
 971         if(count($r))
 972                 return $r[0]['total'];
 973         return 0;
 974
 975 }
 976
 977 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
 978
 979         if($shuffle)
 980                 $sql_extra = " order by rand() ";
 981         else
 982                 $sql_extra = " order by `gcontact`.`name` asc ";
 983
 984         $r = q("SELECT `gcontact`.*
 985                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 986                 where `glink`.`zcid` = %d
 987                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
 988                 $sql_extra limit %d, %d",
 989                 intval($zcid),
 990                 intval($uid),
 991                 intval($start),
 992                 intval($limit)
 993         );
 994
 995         return $r;
 996
 997 }
 998
 999
1000 function count_all_friends($uid,$cid) {
1001
1002         $r = q("SELECT count(*) as `total`
1003                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1004                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1005                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1006                 intval($cid),
1007                 intval($uid)
1008         );
1009
1010         if(count($r))
1011                 return $r[0]['total'];
1012         return 0;
1013
1014 }
1015
1016
1017 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1018
1019         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1020                 FROM `glink`
1021                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1022                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1023                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1024                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1025                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1026                 intval($uid),
1027                 intval($cid),
1028                 intval($uid),
1029                 intval($start),
1030                 intval($limit)
1031         );
1032
1033         return $r;
1034 }
1035
1036
1037
1038 function suggestion_query($uid, $start = 0, $limit = 80) {
1039
1040         if(! $uid)
1041                 return array();
1042
1043         $network = array(NETWORK_DFRN);
1044
1045         if (get_config('system','diaspora_enabled'))
1046                 $network[] = NETWORK_DIASPORA;
1047
1048         if (!get_config('system','ostatus_disabled'))
1049                 $network[] = NETWORK_OSTATUS;
1050
1051         $sql_network = implode("', '", $network);
1052         //$sql_network = "'".$sql_network."', ''";
1053         $sql_network = "'".$sql_network."'";
1054
1055         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1056                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1057                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1058                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1059                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1060                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1061                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1062                 AND `gcontact`.`network` IN (%s)
1063                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1064                 intval($uid),
1065                 intval($uid),
1066                 intval($uid),
1067                 intval($uid),
1068                 $sql_network,
1069                 intval($start),
1070                 intval($limit)
1071         );
1072
1073         if(count($r) && count($r) >= ($limit -1))
1074                 return $r;
1075
1076         $r2 = q("SELECT gcontact.* FROM gcontact
1077                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1078                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1079                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1080                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1081                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1082                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1083                 AND `gcontact`.`network` IN (%s)
1084                 ORDER BY rand() LIMIT %d, %d",
1085                 intval($uid),
1086                 intval($uid),
1087                 intval($uid),
1088                 $sql_network,
1089                 intval($start),
1090                 intval($limit)
1091         );
1092
1093         $list = array();
1094         foreach ($r2 AS $suggestion)
1095                 $list[$suggestion["nurl"]] = $suggestion;
1096
1097         foreach ($r AS $suggestion)
1098                 $list[$suggestion["nurl"]] = $suggestion;
1099
1100         while (sizeof($list) > ($limit))
1101                 array_pop($list);
1102
1103         return $list;
1104 }
1105
1106 function update_suggestions() {
1107
1108         $a = get_app();
1109
1110         $done = array();
1111
1112         /// TODO Check if it is really neccessary to poll the own server
1113         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1114
1115         $done[] = $a->get_baseurl() . '/poco';
1116
1117         if(strlen(get_config('system','directory'))) {
1118                 $x = fetch_url(get_server()."/pubsites");
1119                 if($x) {
1120                         $j = json_decode($x);
1121                         if($j->entries) {
1122                                 foreach($j->entries as $entry) {
1123
1124                                         poco_check_server($entry->url);
1125
1126                                         $url = $entry->url . '/poco';
1127                                         if(! in_array($url,$done))
1128                                                 poco_load(0,0,0,$entry->url . '/poco');
1129                                 }
1130                         }
1131                 }
1132         }
1133
1134         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1135         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1136                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1137         );
1138
1139         if(count($r)) {
1140                 foreach($r as $rr) {
1141                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1142                         if(! in_array($base,$done))
1143                                 poco_load(0,0,0,$base);
1144                 }
1145         }
1146 }
1147
1148 function poco_discover_federation() {
1149         $last = get_config('poco','last_federation_discovery');
1150
1151         if($last) {
1152                 $next = $last + (24 * 60 * 60);
1153                 if($next > time())
1154                         return;
1155         }
1156
1157         // Discover Friendica, Hubzilla and Diaspora servers
1158         $serverdata = fetch_url("http://the-federation.info/pods.json");
1159
1160         if ($serverdata) {
1161                 $servers = json_decode($serverdata);
1162
1163                 foreach($servers->pods AS $server)
1164                         poco_check_server("https://".$server->host);
1165         }
1166
1167         // Discover GNU Social Servers
1168         if (!get_config('system','ostatus_disabled')) {
1169                 $serverdata = "http://gstools.org/api/get_open_instances/";
1170
1171                 $result = z_fetch_url($serverdata);
1172                 if ($result["success"]) {
1173                         $servers = json_decode($result["body"]);
1174
1175                         foreach($servers->data AS $server)
1176                                 poco_check_server($server->instance_address);
1177                 }
1178         }
1179
1180         set_config('poco','last_federation_discovery', time());
1181 }
1182
1183 function poco_discover($complete = false) {
1184
1185         // Update the server list
1186         poco_discover_federation();
1187
1188         $no_of_queries = 5;
1189
1190         $requery_days = intval(get_config("system", "poco_requery_days"));
1191
1192         if ($requery_days == 0)
1193                 $requery_days = 7;
1194
1195         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1196
1197         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1198         if ($r)
1199                 foreach ($r AS $server) {
1200
1201                         if (!poco_check_server($server["url"], $server["network"])) {
1202                                 // The server is not reachable? Okay, then we will try it later
1203                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1204                                 continue;
1205                         }
1206
1207                         // Fetch all users from the other server
1208                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1209
1210                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1211
1212                         $retdata = z_fetch_url($url);
1213                         if ($retdata["success"]) {
1214                                 $data = json_decode($retdata["body"]);
1215
1216                                 poco_discover_server($data, 2);
1217
1218                                 if (get_config('system','poco_discovery') > 1) {
1219
1220                                         $timeframe = get_config('system','poco_discovery_since');
1221                                         if ($timeframe == 0)
1222                                                 $timeframe = 30;
1223
1224                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1225
1226                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1227                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1228
1229                                         $success = false;
1230
1231                                         $retdata = z_fetch_url($url);
1232                                         if ($retdata["success"]) {
1233                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1234                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1235                                         }
1236
1237                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1238                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1239                                                 poco_discover_server_users($data, $server);
1240                                         }
1241                                 }
1242
1243                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1244                                 if (!$complete AND (--$no_of_queries == 0))
1245                                         break;
1246                         } else {
1247                                 // If the server hadn't replied correctly, then force a sanity check
1248                                 poco_check_server($server["url"], $server["network"], true);
1249
1250                                 // If we couldn't reach the server, we will try it some time later
1251                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1252                         }
1253                 }
1254 }
1255
1256 function poco_discover_server_users($data, $server) {
1257
1258         if (!isset($data->entry))
1259                 return;
1260
1261         foreach ($data->entry AS $entry) {
1262                 $username = "";
1263                 if (isset($entry->urls)) {
1264                         foreach($entry->urls as $url)
1265                                 if($url->type == 'profile') {
1266                                         $profile_url = $url->value;
1267                                         $urlparts = parse_url($profile_url);
1268                                         $username = end(explode("/", $urlparts["path"]));
1269                                 }
1270                 }
1271                 if ($username != "") {
1272                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1273
1274                         // Fetch all contacts from a given user from the other server
1275                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1276
1277                         $retdata = z_fetch_url($url);
1278                         if ($retdata["success"])
1279                                 poco_discover_server(json_decode($retdata["body"]), 3);
1280                 }
1281         }
1282 }
1283
1284 function poco_discover_server($data, $default_generation = 0) {
1285
1286         if (!isset($data->entry) OR !count($data->entry))
1287                 return false;
1288
1289         $success = false;
1290
1291         foreach ($data->entry AS $entry) {
1292                 $profile_url = '';
1293                 $profile_photo = '';
1294                 $connect_url = '';
1295                 $name = '';
1296                 $network = '';
1297                 $updated = '0000-00-00 00:00:00';
1298                 $location = '';
1299                 $about = '';
1300                 $keywords = '';
1301                 $gender = '';
1302                 $generation = $default_generation;
1303
1304                 $name = $entry->displayName;
1305
1306                 if(isset($entry->urls)) {
1307                         foreach($entry->urls as $url) {
1308                                 if($url->type == 'profile') {
1309                                         $profile_url = $url->value;
1310                                         continue;
1311                                 }
1312                                 if($url->type == 'webfinger') {
1313                                         $connect_url = str_replace('acct:' , '', $url->value);
1314                                         continue;
1315                                 }
1316                         }
1317                 }
1318
1319                 if(isset($entry->photos)) {
1320                         foreach($entry->photos as $photo) {
1321                                 if($photo->type == 'profile') {
1322                                         $profile_photo = $photo->value;
1323                                         continue;
1324                                 }
1325                         }
1326                 }
1327
1328                 if(isset($entry->updated))
1329                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1330
1331                 if(isset($entry->network))
1332                         $network = $entry->network;
1333
1334                 if(isset($entry->currentLocation))
1335                         $location = $entry->currentLocation;
1336
1337                 if(isset($entry->aboutMe))
1338                         $about = html2bbcode($entry->aboutMe);
1339
1340                 if(isset($entry->gender))
1341                         $gender = $entry->gender;
1342
1343                 if(isset($entry->generation) AND ($entry->generation > 0))
1344                         $generation = ++$entry->generation;
1345
1346                 if(isset($entry->tags))
1347                         foreach($entry->tags as $tag)
1348                                 $keywords = implode(", ", $tag);
1349
1350                 if ($generation > 0) {
1351                         $success = true;
1352
1353                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1354                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1355                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1356                 }
1357         }
1358         return $success;
1359 }
1360
1361 /**
1362  * @brief Removes unwanted parts from a contact url
1363  *
1364  * @param string $url Contact url
1365  * @return string Contact url with the wanted parts
1366  */
1367 function clean_contact_url($url) {
1368         $parts = parse_url($url);
1369
1370         if (!isset($parts["scheme"]) OR !isset($parts["host"]))
1371                 return $url;
1372
1373         $new_url = $parts["scheme"]."://".$parts["host"];
1374
1375         if (isset($parts["port"]))
1376                 $new_url .= ":".$parts["port"];
1377
1378         if (isset($parts["path"]))
1379                 $new_url .= $parts["path"];
1380
1381         if ($new_url != $url)
1382                 logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".App::callstack(), LOGGER_DEBUG);
1383
1384         return $new_url;
1385 }
1386
1387 /**
1388  * @brief Replace alternate OStatus user format with the primary one
1389  *
1390  * @param arr $contact contact array (called by reference)
1391  */
1392 function fix_alternate_contact_address(&$contact) {
1393         if (($contact["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($contact["url"])) {
1394                 $data = probe_url($contact["url"]);
1395                 if ($contact["network"] == NETWORK_OSTATUS) {
1396                         logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1397                         $contact["url"] = $data["url"];
1398                         $contact["addr"] = $data["addr"];
1399                         $contact["alias"] = $data["alias"];
1400                         $contact["server_url"] = $data["baseurl"];
1401                 }
1402         }
1403 }
1404
1405 /**
1406  * @brief Fetch the gcontact id, add an entry if not existed
1407  *
1408  * @param arr $contact contact array
1409  * @return bool|int Returns false if not found, integer if contact was found
1410  */
1411 function get_gcontact_id($contact) {
1412
1413         $gcontact_id = 0;
1414
1415         if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
1416                 logger("Invalid network for contact url ".$contact["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1417                 return false;
1418         }
1419
1420         if ($contact["network"] == NETWORK_STATUSNET)
1421                 $contact["network"] = NETWORK_OSTATUS;
1422
1423         // Replace alternate OStatus user format with the primary one
1424         fix_alternate_contact_address($contact);
1425
1426         // Remove unwanted parts from the contact url (e.g. "?zrl=...")
1427         if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS)))
1428                 $contact["url"] = clean_contact_url($contact["url"]);
1429
1430         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1431                 dbesc(normalise_link($contact["url"])));
1432
1433         if ($r)
1434                 $gcontact_id = $r[0]["id"];
1435         else {
1436                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `generation`)
1437                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
1438                         dbesc($contact["name"]),
1439                         dbesc($contact["nick"]),
1440                         dbesc($contact["addr"]),
1441                         dbesc($contact["network"]),
1442                         dbesc($contact["url"]),
1443                         dbesc(normalise_link($contact["url"])),
1444                         dbesc($contact["photo"]),
1445                         dbesc(datetime_convert()),
1446                         dbesc(datetime_convert()),
1447                         dbesc($contact["location"]),
1448                         dbesc($contact["about"]),
1449                         intval($contact["generation"])
1450                 );
1451
1452                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1453                         dbesc(normalise_link($contact["url"])));
1454
1455                 if ($r) {
1456                         $gcontact_id = $r[0]["id"];
1457
1458                         // Complete newly added contacts from "probable" accounts
1459                         if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA, NETWORK_FEED))) {
1460                                 logger("Probing ".$contact["url"], LOGGER_DEBUG);
1461                                 proc_run('php', 'include/gprobe.php', bin2hex($contact["url"]));
1462                         }
1463                 }
1464         }
1465
1466         if ((count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1467          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1468                 dbesc(normalise_link($contact["url"])),
1469                 intval($gcontact_id));
1470
1471         return $gcontact_id;
1472 }
1473
1474 /**
1475  * @brief Updates the gcontact table from a given array
1476  *
1477  * @param arr $contact contact array
1478  * @return bool|int Returns false if not found, integer if contact was found
1479  */
1480 function update_gcontact($contact) {
1481
1482         /// @todo update contact table as well
1483
1484         $gcontact_id = get_gcontact_id($contact);
1485
1486         if (!$gcontact_id)
1487                 return false;
1488
1489         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1490                         `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1491                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1492                 intval($gcontact_id));
1493
1494         // Get all field names
1495         $fields = array();
1496         foreach ($r[0] AS $field => $data)
1497                 $fields[$field] = $data;
1498
1499         unset($fields["url"]);
1500         unset($fields["updated"]);
1501
1502         // Bugfix: We had an error in the storing of keywords which lead to the "0"
1503         // This value is still transmitted via poco.
1504         if ($contact["keywords"] == "0")
1505                 unset($contact["keywords"]);
1506
1507         if ($r[0]["keywords"] == "0")
1508                 $r[0]["keywords"] = "";
1509
1510         // assign all unassigned fields from the database entry
1511         foreach ($fields AS $field => $data)
1512                 if (!isset($contact[$field]) OR ($contact[$field] == ""))
1513                         $contact[$field] = $r[0][$field];
1514
1515         if ($contact["network"] == NETWORK_STATUSNET)
1516                 $contact["network"] = NETWORK_OSTATUS;
1517
1518         // Replace alternate OStatus user format with the primary one
1519         fix_alternate_contact_address($contact);
1520
1521         if (!isset($contact["updated"]))
1522                 $contact["updated"] = datetime_convert();
1523
1524         if ($contact["server_url"] == "") {
1525                 $server_url = $contact["url"];
1526
1527                 $server_url = matching_url($server_url, $contact["alias"]);
1528                 if ($server_url != "")
1529                         $contact["server_url"] = $server_url;
1530
1531                 $server_url = matching_url($server_url, $contact["photo"]);
1532                 if ($server_url != "")
1533                         $contact["server_url"] = $server_url;
1534
1535                 $server_url = matching_url($server_url, $contact["notify"]);
1536                 if ($server_url != "")
1537                         $contact["server_url"] = $server_url;
1538         } else
1539                 $contact["server_url"] = normalise_link($contact["server_url"]);
1540
1541         if (($contact["addr"] == "") AND ($contact["server_url"] != "") AND ($contact["nick"] != "")) {
1542                 $hostname = str_replace("http://", "", $contact["server_url"]);
1543                 $contact["addr"] = $contact["nick"]."@".$hostname;
1544         }
1545
1546         // Check if any field changed
1547         $update = false;
1548         unset($fields["generation"]);
1549
1550         if ((($contact["generation"] > 0) AND ($contact["generation"] <= $r[0]["generation"])) OR ($r[0]["generation"] == 0)) {
1551                 foreach ($fields AS $field => $data)
1552                         if ($contact[$field] != $r[0][$field]) {
1553                                 logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
1554                                 $update = true;
1555                         }
1556
1557                 if ($contact["generation"] < $r[0]["generation"]) {
1558                         logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
1559                         $update = true;
1560                 }
1561         }
1562
1563         if ($update) {
1564                 logger("Update gcontact for ".$contact["url"]." Callstack: ".App::callstack(), LOGGER_DEBUG);
1565
1566                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1567                                         `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
1568                                         `alias` = '%s', `notify` = '%s', `url` = '%s',
1569                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1570                                         `server_url` = '%s', `connect` = '%s'
1571                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1572                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1573                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1574                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1575                         intval($contact["nsfw"]), dbesc($contact["alias"]), dbesc($contact["notify"]),
1576                         dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1577                         intval($contact["generation"]), dbesc($contact["updated"]),
1578                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1579                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1580
1581
1582                 // Now update the contact entry with the user id "0" as well.
1583                 // This is used for the shadow copies of public items.
1584                 $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
1585                         dbesc(normalise_link($contact["url"])));
1586
1587                 if ($r) {
1588                         logger("Update shadow contact ".$r[0]["id"], LOGGER_DEBUG);
1589
1590                         update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
1591
1592                         q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s',
1593                                                 `network` = '%s', `bd` = '%s', `gender` = '%s',
1594                                                 `keywords` = '%s', `alias` = '%s', `url` = '%s',
1595                                                 `location` = '%s', `about` = '%s'
1596                                         WHERE `id` = %d",
1597                                 dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["addr"]),
1598                                 dbesc($contact["network"]), dbesc($contact["birthday"]), dbesc($contact["gender"]),
1599                                 dbesc($contact["keywords"]), dbesc($contact["alias"]), dbesc($contact["url"]),
1600                                 dbesc($contact["location"]), dbesc($contact["about"]), intval($r[0]["id"]));
1601                 }
1602         }
1603
1604         return $gcontact_id;
1605 }
1606
1607 /**
1608  * @brief Updates the gcontact entry from probe
1609  *
1610  * @param str $url profile link
1611  */
1612 function update_gcontact_from_probe($url) {
1613         $data = probe_url($url);
1614
1615         if (in_array($data["network"], array(NETWORK_PHANTOM))) {
1616                 logger("Invalid network for contact url ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1617                 return;
1618         }
1619
1620         update_gcontact($data);
1621 }
1622
1623 /**
1624  * @brief Fetches users of given GNU Social server
1625  *
1626  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1627  *
1628  * @param str $server Server address
1629  */
1630 function gs_fetch_users($server) {
1631
1632         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1633
1634         $a = get_app();
1635
1636         $url = $server."/main/statistics";
1637
1638         $result = z_fetch_url($url);
1639         if (!$result["success"])
1640                 return false;
1641
1642         $statistics = json_decode($result["body"]);
1643
1644         if (is_object($statistics->config)) {
1645                 if ($statistics->config->instance_with_ssl)
1646                         $server = "https://";
1647                 else
1648                         $server = "http://";
1649
1650                 $server .= $statistics->config->instance_address;
1651
1652                 $hostname = $statistics->config->instance_address;
1653         } else {
1654                 if ($statistics->instance_with_ssl)
1655                         $server = "https://";
1656                 else
1657                         $server = "http://";
1658
1659                 $server .= $statistics->instance_address;
1660
1661                 $hostname = $statistics->instance_address;
1662         }
1663
1664         if (is_object($statistics->users))
1665                 foreach ($statistics->users AS $nick => $user) {
1666                         $profile_url = $server."/".$user->nickname;
1667
1668                         $contact = array("url" => $profile_url,
1669                                         "name" => $user->fullname,
1670                                         "addr" => $user->nickname."@".$hostname,
1671                                         "nick" => $user->nickname,
1672                                         "about" => $user->bio,
1673                                         "network" => NETWORK_OSTATUS,
1674                                         "photo" => $a->get_baseurl()."/images/person-175.jpg");
1675                         get_gcontact_id($contact);
1676                 }
1677 }
1678
1679 /**
1680  * @brief Asking GNU Social server on a regular base for their user data
1681  *
1682  */
1683 function gs_discover() {
1684
1685         $requery_days = intval(get_config("system", "poco_requery_days"));
1686
1687         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1688
1689         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1690                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1691
1692         if (!$r)
1693                 return;
1694
1695         foreach ($r AS $server) {
1696                 gs_fetch_users($server["url"]);
1697                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1698         }
1699 }
1700 ?>