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 (!in_array($gcontacts[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_FEED, NETWORK_OSTATUS, ""))) {
 408                 logger("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", LOGGER_DEBUG);
 409                 return false;
 410         }
 411
 412         if ($server_url != "") {
 413                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 414
 415                         if ($force)
 416                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 417                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 418
 419                         logger("Profile ".$profile.": Server ".$server_url." wasn't reachable.", LOGGER_DEBUG);
 420                         return false;
 421                 }
 422
 423                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 424                         dbesc($server_url), dbesc(normalise_link($profile)));
 425         }
 426
 427         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 428                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 429                         dbesc(normalise_link($server_url)));
 430
 431                 if ($server)
 432                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 433                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 434                 else
 435                         return false;
 436         }
 437
 438         // noscrape is really fast so we don't cache the call.
 439         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 440
 441                 //  Use noscrape if possible
 442                 $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 443
 444                 if ($server) {
 445                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 446
 447                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 448
 449                                 $noscrape = json_decode($noscraperet["body"], true);
 450
 451                                 if (is_array($noscrape)) {
 452                                         $contact = array("url" => $profile,
 453                                                         "network" => $server[0]["network"],
 454                                                         "generation" => $gcontacts[0]["generation"]);
 455
 456                                         $contact["name"] = $noscrape["fn"];
 457                                         $contact["community"] = $noscrape["comm"];
 458
 459                                         if (isset($noscrape["tags"])) {
 460                                                 $keywords = implode(" ", $noscrape["tags"]);
 461                                                 if ($keywords != "")
 462                                                         $contact["keywords"] = $keywords;
 463                                         }
 464
 465                                         $location = formatted_location($noscrape);
 466                                         if ($location)
 467                                                 $contact["location"] = $location;
 468
 469                                         $contact["notify"] = $noscrape["dfrn-notify"];
 470
 471                                         // Remove all fields that are not present in the gcontact table
 472                                         unset($noscrape["fn"]);
 473                                         unset($noscrape["key"]);
 474                                         unset($noscrape["homepage"]);
 475                                         unset($noscrape["comm"]);
 476                                         unset($noscrape["tags"]);
 477                                         unset($noscrape["locality"]);
 478                                         unset($noscrape["region"]);
 479                                         unset($noscrape["country-name"]);
 480                                         unset($noscrape["contacts"]);
 481                                         unset($noscrape["dfrn-request"]);
 482                                         unset($noscrape["dfrn-confirm"]);
 483                                         unset($noscrape["dfrn-notify"]);
 484                                         unset($noscrape["dfrn-poll"]);
 485
 486                                         // Set the date of the last contact
 487                                         /// @todo By now the function "update_gcontact" doesn't work with this field
 488                                         //$contact["last_contact"] = datetime_convert();
 489
 490                                         $contact = array_merge($contact, $noscrape);
 491
 492                                         update_gcontact($contact);
 493
 494                                         if (trim($noscrape["updated"]) != "") {
 495                                                 q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 496                                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 497
 498                                                 logger("Profile ".$profile." was last updated at ".$noscrape["updated"]." (noscrape)", LOGGER_DEBUG);
 499
 500                                                 return $noscrape["updated"];
 501                                         }
 502                                 }
 503                         }
 504                 }
 505         }
 506
 507         // If we only can poll the feed, then we only do this once a while
 508         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"])) {
 509                 logger("Profile ".$profile." was last updated at ".$gcontacts[0]["updated"]." (cached)", LOGGER_DEBUG);
 510                 return $gcontacts[0]["updated"];
 511         }
 512
 513         $data = probe_url($profile);
 514
 515         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 516         // Then check the other link and delete this one
 517         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 518                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 519                 (normalise_link($profile) != normalise_link($data["url"]))) {
 520
 521                 // Delete the old entry
 522                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 523                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 524
 525                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 526                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 527
 528                 poco_last_updated($data["url"], $force);
 529
 530                 logger("Profile ".$profile." was deleted", LOGGER_DEBUG);
 531                 return false;
 532         }
 533
 534         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 535                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 536                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 537
 538                 logger("Profile ".$profile." wasn't reachable (profile)", LOGGER_DEBUG);
 539                 return false;
 540         }
 541
 542         $contact = array("generation" => $gcontacts[0]["generation"]);
 543
 544         $contact = array_merge($contact, $data);
 545
 546         $contact["server_url"] = $data["baseurl"];
 547
 548         unset($contact["batch"]);
 549         unset($contact["poll"]);
 550         unset($contact["request"]);
 551         unset($contact["confirm"]);
 552         unset($contact["poco"]);
 553         unset($contact["priority"]);
 554         unset($contact["pubkey"]);
 555         unset($contact["baseurl"]);
 556
 557         update_gcontact($contact);
 558
 559         $feedret = z_fetch_url($data["poll"]);
 560
 561         if (!$feedret["success"]) {
 562                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 563                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 564
 565                 logger("Profile ".$profile." wasn't reachable (no feed)", LOGGER_DEBUG);
 566                 return false;
 567         }
 568
 569         $doc = new DOMDocument();
 570         @$doc->loadXML($feedret["body"]);
 571
 572         $xpath = new DomXPath($doc);
 573         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 574
 575         $entries = $xpath->query('/atom:feed/atom:entry');
 576
 577         $last_updated = "";
 578
 579         foreach ($entries AS $entry) {
 580                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 581                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 582
 583                 if ($last_updated < $published)
 584                         $last_updated = $published;
 585
 586                 if ($last_updated < $updated)
 587                         $last_updated = $updated;
 588         }
 589
 590         // Maybe there aren't any entries. Then check if it is a valid feed
 591         if ($last_updated == "")
 592                 if ($xpath->query('/atom:feed')->length > 0)
 593                         $last_updated = "0000-00-00 00:00:00";
 594
 595         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 596                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 597
 598         if (($gcontacts[0]["generation"] == 0))
 599                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 600                         dbesc(normalise_link($profile)));
 601
 602         logger("Profile ".$profile." was last updated at ".$last_updated, LOGGER_DEBUG);
 603
 604         return($last_updated);
 605 }
 606
 607 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 608         $now = strtotime(datetime_convert());
 609
 610         if ($updated > $last_contact)
 611                 $contact_time = strtotime($updated);
 612         else
 613                 $contact_time = strtotime($last_contact);
 614
 615         $failure_time = strtotime($last_failure);
 616         $created_time = strtotime($created);
 617
 618         // If there is no "created" time then use the current time
 619         if ($created_time <= 0)
 620                 $created_time = $now;
 621
 622         // If the last contact was less than 24 hours then don't update
 623         if (($now - $contact_time) < (60 * 60 * 24))
 624                 return false;
 625
 626         // If the last failure was less than 24 hours then don't update
 627         if (($now - $failure_time) < (60 * 60 * 24))
 628                 return false;
 629
 630         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 631         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 632         //      return false;
 633
 634         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 635         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 636                 return false;
 637
 638         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 639         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 640                 return false;
 641
 642         return true;
 643 }
 644
 645 function poco_to_boolean($val) {
 646         if (($val == "true") OR ($val == 1))
 647                 return(true);
 648         if (($val == "false") OR ($val == 0))
 649                 return(false);
 650
 651         return ($val);
 652 }
 653
 654 function poco_check_server($server_url, $network = "", $force = false) {
 655
 656         // Unify the server address
 657         $server_url = trim($server_url, "/");
 658         $server_url = str_replace("/index.php", "", $server_url);
 659
 660         if ($server_url == "")
 661                 return false;
 662
 663         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 664         if ($servers) {
 665
 666                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 667                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 668                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 669
 670                 $poco = $servers[0]["poco"];
 671                 $noscrape = $servers[0]["noscrape"];
 672
 673                 if ($network == "")
 674                         $network = $servers[0]["network"];
 675
 676                 $last_contact = $servers[0]["last_contact"];
 677                 $last_failure = $servers[0]["last_failure"];
 678                 $version = $servers[0]["version"];
 679                 $platform = $servers[0]["platform"];
 680                 $site_name = $servers[0]["site_name"];
 681                 $info = $servers[0]["info"];
 682                 $register_policy = $servers[0]["register_policy"];
 683
 684                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 685                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 686                         return ($last_contact >= $last_failure);
 687                 }
 688         } else {
 689                 $poco = "";
 690                 $noscrape = "";
 691                 $version = "";
 692                 $platform = "";
 693                 $site_name = "";
 694                 $info = "";
 695                 $register_policy = -1;
 696
 697                 $last_contact = "0000-00-00 00:00:00";
 698                 $last_failure = "0000-00-00 00:00:00";
 699         }
 700         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 701
 702         $failure = false;
 703         $orig_last_failure = $last_failure;
 704
 705         // Check if the page is accessible via SSL.
 706         $server_url = str_replace("http://", "https://", $server_url);
 707         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 708
 709         // Maybe the page is unencrypted only?
 710         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 711         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 712                 $server_url = str_replace("https://", "http://", $server_url);
 713                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 714
 715                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 716         }
 717
 718         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 719                 // Workaround for bad configured servers (known nginx problem)
 720                 if ($serverret["debug"]["http_code"] != "403") {
 721                         $last_failure = datetime_convert();
 722                         $failure = true;
 723                 }
 724         } elseif ($network == NETWORK_DIASPORA)
 725                 $last_contact = datetime_convert();
 726
 727         if (!$failure) {
 728                 // Test for Diaspora
 729                 $serverret = z_fetch_url($server_url);
 730
 731                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 732                         $failure = true;
 733                 else {
 734                         $lines = explode("\n",$serverret["header"]);
 735                         if(count($lines))
 736                                 foreach($lines as $line) {
 737                                         $line = trim($line);
 738                                         if(stristr($line,'X-Diaspora-Version:')) {
 739                                                 $platform = "Diaspora";
 740                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 741                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 742                                                 $network = NETWORK_DIASPORA;
 743                                                 $versionparts = explode("-", $version);
 744                                                 $version = $versionparts[0];
 745                                         }
 746                                 }
 747                 }
 748         }
 749
 750         if (!$failure) {
 751                 // Test for Statusnet
 752                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 753                 // The "not implemented" is a special treatment for really, really old Friendica versions
 754                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 755                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 756                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 757                         $platform = "StatusNet";
 758                         $version = trim($serverret["body"], '"');
 759                         $network = NETWORK_OSTATUS;
 760                 }
 761
 762                 // Test for GNU Social
 763                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 764                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND
 765                         ($serverret["body"] != '') AND (strlen($serverret["body"]) < 30)) {
 766                         $platform = "GNU Social";
 767                         $version = trim($serverret["body"], '"');
 768                         $network = NETWORK_OSTATUS;
 769                 }
 770
 771                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 772                 if ($serverret["success"]) {
 773                         $data = json_decode($serverret["body"]);
 774
 775                         if (isset($data->site->server)) {
 776                                 $last_contact = datetime_convert();
 777
 778                                 if (isset($data->site->hubzilla)) {
 779                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 780                                         $version = $data->site->hubzilla->RED_VERSION;
 781                                         $network = NETWORK_DIASPORA;
 782                                 }
 783                                 if (isset($data->site->redmatrix)) {
 784                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 785                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 786                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 787                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 788
 789                                         $version = $data->site->redmatrix->RED_VERSION;
 790                                         $network = NETWORK_DIASPORA;
 791                                 }
 792                                 if (isset($data->site->friendica)) {
 793                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 794                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 795                                         $network = NETWORK_DFRN;
 796                                 }
 797
 798                                 $site_name = $data->site->name;
 799
 800                                 $data->site->closed = poco_to_boolean($data->site->closed);
 801                                 $data->site->private = poco_to_boolean($data->site->private);
 802                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 803
 804                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 805                                         $register_policy = REGISTER_APPROVE;
 806                                 elseif (!$data->site->closed AND !$data->site->private)
 807                                         $register_policy = REGISTER_OPEN;
 808                                 else
 809                                         $register_policy = REGISTER_CLOSED;
 810                         }
 811                 }
 812         }
 813
 814         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 815         if (!$failure) {
 816                 $serverret = z_fetch_url($server_url."/statistics.json");
 817                 if ($serverret["success"]) {
 818                         $data = json_decode($serverret["body"]);
 819                         if ($version == "")
 820                                 $version = $data->version;
 821
 822                         $site_name = $data->name;
 823
 824                         if (isset($data->network) AND ($platform == ""))
 825                                 $platform = $data->network;
 826
 827                         if ($platform == "Diaspora")
 828                                 $network = NETWORK_DIASPORA;
 829
 830                         if ($data->registrations_open)
 831                                 $register_policy = REGISTER_OPEN;
 832                         else
 833                                 $register_policy = REGISTER_CLOSED;
 834
 835                         if (isset($data->version))
 836                                 $last_contact = datetime_convert();
 837                 }
 838         }
 839
 840         // Check for noscrape
 841         // Friendica servers could be detected as OStatus servers
 842         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 843                 $serverret = z_fetch_url($server_url."/friendica/json");
 844
 845                 if (!$serverret["success"])
 846                         $serverret = z_fetch_url($server_url."/friendika/json");
 847
 848                 if ($serverret["success"]) {
 849                         $data = json_decode($serverret["body"]);
 850
 851                         if (isset($data->version)) {
 852                                 $last_contact = datetime_convert();
 853                                 $network = NETWORK_DFRN;
 854
 855                                 $noscrape = $data->no_scrape_url;
 856                                 $version = $data->version;
 857                                 $site_name = $data->site_name;
 858                                 $info = $data->info;
 859                                 $register_policy_str = $data->register_policy;
 860                                 $platform = $data->platform;
 861
 862                                 switch ($register_policy_str) {
 863                                         case "REGISTER_CLOSED":
 864                                                 $register_policy = REGISTER_CLOSED;
 865                                                 break;
 866                                         case "REGISTER_APPROVE":
 867                                                 $register_policy = REGISTER_APPROVE;
 868                                                 break;
 869                                         case "REGISTER_OPEN":
 870                                                 $register_policy = REGISTER_OPEN;
 871                                                 break;
 872                                 }
 873                         }
 874                 }
 875         }
 876
 877         // Look for poco
 878         if (!$failure) {
 879                 $serverret = z_fetch_url($server_url."/poco");
 880                 if ($serverret["success"]) {
 881                         $data = json_decode($serverret["body"]);
 882                         if (isset($data->totalResults)) {
 883                                 $poco = $server_url."/poco";
 884                                 $last_contact = datetime_convert();
 885                         }
 886                 }
 887         }
 888
 889         // Check again if the server exists
 890         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 891
 892         $version = strip_tags($version);
 893         $site_name = strip_tags($site_name);
 894         $info = strip_tags($info);
 895         $platform = strip_tags($platform);
 896
 897         if ($servers)
 898                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 899                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 900                         dbesc($server_url),
 901                         dbesc($version),
 902                         dbesc($site_name),
 903                         dbesc($info),
 904                         intval($register_policy),
 905                         dbesc($poco),
 906                         dbesc($noscrape),
 907                         dbesc($network),
 908                         dbesc($platform),
 909                         dbesc($last_contact),
 910                         dbesc($last_failure),
 911                         dbesc(normalise_link($server_url))
 912                 );
 913         else
 914                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 915                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 916                                 dbesc($server_url),
 917                                 dbesc(normalise_link($server_url)),
 918                                 dbesc($version),
 919                                 dbesc($site_name),
 920                                 dbesc($info),
 921                                 intval($register_policy),
 922                                 dbesc($poco),
 923                                 dbesc($noscrape),
 924                                 dbesc($network),
 925                                 dbesc($platform),
 926                                 dbesc(datetime_convert()),
 927                                 dbesc($last_contact),
 928                                 dbesc($last_failure),
 929                                 dbesc(datetime_convert())
 930                 );
 931
 932         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 933
 934         return !$failure;
 935 }
 936
 937 function count_common_friends($uid,$cid) {
 938
 939         $r = q("SELECT count(*) as `total`
 940                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 941                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
 942                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 943                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 944                 intval($cid),
 945                 intval($uid),
 946                 intval($uid),
 947                 intval($cid)
 948         );
 949
 950 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
 951         if(count($r))
 952                 return $r[0]['total'];
 953         return 0;
 954
 955 }
 956
 957
 958 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
 959
 960         if($shuffle)
 961                 $sql_extra = " order by rand() ";
 962         else
 963                 $sql_extra = " order by `gcontact`.`name` asc ";
 964
 965         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
 966                 FROM `glink`
 967                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
 968                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
 969                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
 970                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
 971                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
 972                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
 973                         $sql_extra LIMIT %d, %d",
 974                 intval($cid),
 975                 intval($uid),
 976                 intval($uid),
 977                 intval($cid),
 978                 intval($start),
 979                 intval($limit)
 980         );
 981
 982         return $r;
 983
 984 }
 985
 986
 987 function count_common_friends_zcid($uid,$zcid) {
 988
 989         $r = q("SELECT count(*) as `total`
 990                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 991                 where `glink`.`zcid` = %d
 992                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
 993                 intval($zcid),
 994                 intval($uid)
 995         );
 996
 997         if(count($r))
 998                 return $r[0]['total'];
 999         return 0;
1000
1001 }
1002
1003 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1004
1005         if($shuffle)
1006                 $sql_extra = " order by rand() ";
1007         else
1008                 $sql_extra = " order by `gcontact`.`name` asc ";
1009
1010         $r = q("SELECT `gcontact`.*
1011                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1012                 where `glink`.`zcid` = %d
1013                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1014                 $sql_extra limit %d, %d",
1015                 intval($zcid),
1016                 intval($uid),
1017                 intval($start),
1018                 intval($limit)
1019         );
1020
1021         return $r;
1022
1023 }
1024
1025
1026 function count_all_friends($uid,$cid) {
1027
1028         $r = q("SELECT count(*) as `total`
1029                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1030                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1031                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1032                 intval($cid),
1033                 intval($uid)
1034         );
1035
1036         if(count($r))
1037                 return $r[0]['total'];
1038         return 0;
1039
1040 }
1041
1042
1043 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1044
1045         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1046                 FROM `glink`
1047                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1048                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1049                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1050                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1051                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1052                 intval($uid),
1053                 intval($cid),
1054                 intval($uid),
1055                 intval($start),
1056                 intval($limit)
1057         );
1058
1059         return $r;
1060 }
1061
1062
1063
1064 function suggestion_query($uid, $start = 0, $limit = 80) {
1065
1066         if(! $uid)
1067                 return array();
1068
1069         $network = array(NETWORK_DFRN);
1070
1071         if (get_config('system','diaspora_enabled'))
1072                 $network[] = NETWORK_DIASPORA;
1073
1074         if (!get_config('system','ostatus_disabled'))
1075                 $network[] = NETWORK_OSTATUS;
1076
1077         $sql_network = implode("', '", $network);
1078         //$sql_network = "'".$sql_network."', ''";
1079         $sql_network = "'".$sql_network."'";
1080
1081         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1082                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1083                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1084                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1085                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1086                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1087                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1088                 AND `gcontact`.`network` IN (%s)
1089                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1090                 intval($uid),
1091                 intval($uid),
1092                 intval($uid),
1093                 intval($uid),
1094                 $sql_network,
1095                 intval($start),
1096                 intval($limit)
1097         );
1098
1099         if(count($r) && count($r) >= ($limit -1))
1100                 return $r;
1101
1102         $r2 = q("SELECT gcontact.* FROM gcontact
1103                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1104                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1105                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1106                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1107                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1108                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1109                 AND `gcontact`.`network` IN (%s)
1110                 ORDER BY rand() LIMIT %d, %d",
1111                 intval($uid),
1112                 intval($uid),
1113                 intval($uid),
1114                 $sql_network,
1115                 intval($start),
1116                 intval($limit)
1117         );
1118
1119         $list = array();
1120         foreach ($r2 AS $suggestion)
1121                 $list[$suggestion["nurl"]] = $suggestion;
1122
1123         foreach ($r AS $suggestion)
1124                 $list[$suggestion["nurl"]] = $suggestion;
1125
1126         while (sizeof($list) > ($limit))
1127                 array_pop($list);
1128
1129         return $list;
1130 }
1131
1132 function update_suggestions() {
1133
1134         $a = get_app();
1135
1136         $done = array();
1137
1138         /// TODO Check if it is really neccessary to poll the own server
1139         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1140
1141         $done[] = $a->get_baseurl() . '/poco';
1142
1143         if(strlen(get_config('system','directory'))) {
1144                 $x = fetch_url(get_server()."/pubsites");
1145                 if($x) {
1146                         $j = json_decode($x);
1147                         if($j->entries) {
1148                                 foreach($j->entries as $entry) {
1149
1150                                         poco_check_server($entry->url);
1151
1152                                         $url = $entry->url . '/poco';
1153                                         if(! in_array($url,$done))
1154                                                 poco_load(0,0,0,$entry->url . '/poco');
1155                                 }
1156                         }
1157                 }
1158         }
1159
1160         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1161         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1162                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1163         );
1164
1165         if(count($r)) {
1166                 foreach($r as $rr) {
1167                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1168                         if(! in_array($base,$done))
1169                                 poco_load(0,0,0,$base);
1170                 }
1171         }
1172 }
1173
1174 function poco_discover_federation() {
1175         $last = get_config('poco','last_federation_discovery');
1176
1177         if($last) {
1178                 $next = $last + (24 * 60 * 60);
1179                 if($next > time())
1180                         return;
1181         }
1182
1183         // Discover Friendica, Hubzilla and Diaspora servers
1184         $serverdata = fetch_url("http://the-federation.info/pods.json");
1185
1186         if ($serverdata) {
1187                 $servers = json_decode($serverdata);
1188
1189                 foreach($servers->pods AS $server)
1190                         poco_check_server("https://".$server->host);
1191         }
1192
1193         // Discover GNU Social Servers
1194         if (!get_config('system','ostatus_disabled')) {
1195                 $serverdata = "http://gstools.org/api/get_open_instances/";
1196
1197                 $result = z_fetch_url($serverdata);
1198                 if ($result["success"]) {
1199                         $servers = json_decode($result["body"]);
1200
1201                         foreach($servers->data AS $server)
1202                                 poco_check_server($server->instance_address);
1203                 }
1204         }
1205
1206         set_config('poco','last_federation_discovery', time());
1207 }
1208
1209 function poco_discover($complete = false) {
1210
1211         // Update the server list
1212         poco_discover_federation();
1213
1214         $no_of_queries = 5;
1215
1216         $requery_days = intval(get_config("system", "poco_requery_days"));
1217
1218         if ($requery_days == 0)
1219                 $requery_days = 7;
1220
1221         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1222
1223         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1224         if ($r)
1225                 foreach ($r AS $server) {
1226
1227                         if (!poco_check_server($server["url"], $server["network"])) {
1228                                 // The server is not reachable? Okay, then we will try it later
1229                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1230                                 continue;
1231                         }
1232
1233                         // Fetch all users from the other server
1234                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1235
1236                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1237
1238                         $retdata = z_fetch_url($url);
1239                         if ($retdata["success"]) {
1240                                 $data = json_decode($retdata["body"]);
1241
1242                                 poco_discover_server($data, 2);
1243
1244                                 if (get_config('system','poco_discovery') > 1) {
1245
1246                                         $timeframe = get_config('system','poco_discovery_since');
1247                                         if ($timeframe == 0)
1248                                                 $timeframe = 30;
1249
1250                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1251
1252                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1253                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1254
1255                                         $success = false;
1256
1257                                         $retdata = z_fetch_url($url);
1258                                         if ($retdata["success"]) {
1259                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1260                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1261                                         }
1262
1263                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1264                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1265                                                 poco_discover_server_users($data, $server);
1266                                         }
1267                                 }
1268
1269                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1270                                 if (!$complete AND (--$no_of_queries == 0))
1271                                         break;
1272                         } else {
1273                                 // If the server hadn't replied correctly, then force a sanity check
1274                                 poco_check_server($server["url"], $server["network"], true);
1275
1276                                 // If we couldn't reach the server, we will try it some time later
1277                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1278                         }
1279                 }
1280 }
1281
1282 function poco_discover_server_users($data, $server) {
1283
1284         if (!isset($data->entry))
1285                 return;
1286
1287         foreach ($data->entry AS $entry) {
1288                 $username = "";
1289                 if (isset($entry->urls)) {
1290                         foreach($entry->urls as $url)
1291                                 if($url->type == 'profile') {
1292                                         $profile_url = $url->value;
1293                                         $urlparts = parse_url($profile_url);
1294                                         $username = end(explode("/", $urlparts["path"]));
1295                                 }
1296                 }
1297                 if ($username != "") {
1298                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1299
1300                         // Fetch all contacts from a given user from the other server
1301                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1302
1303                         $retdata = z_fetch_url($url);
1304                         if ($retdata["success"])
1305                                 poco_discover_server(json_decode($retdata["body"]), 3);
1306                 }
1307         }
1308 }
1309
1310 function poco_discover_server($data, $default_generation = 0) {
1311
1312         if (!isset($data->entry) OR !count($data->entry))
1313                 return false;
1314
1315         $success = false;
1316
1317         foreach ($data->entry AS $entry) {
1318                 $profile_url = '';
1319                 $profile_photo = '';
1320                 $connect_url = '';
1321                 $name = '';
1322                 $network = '';
1323                 $updated = '0000-00-00 00:00:00';
1324                 $location = '';
1325                 $about = '';
1326                 $keywords = '';
1327                 $gender = '';
1328                 $generation = $default_generation;
1329
1330                 $name = $entry->displayName;
1331
1332                 if(isset($entry->urls)) {
1333                         foreach($entry->urls as $url) {
1334                                 if($url->type == 'profile') {
1335                                         $profile_url = $url->value;
1336                                         continue;
1337                                 }
1338                                 if($url->type == 'webfinger') {
1339                                         $connect_url = str_replace('acct:' , '', $url->value);
1340                                         continue;
1341                                 }
1342                         }
1343                 }
1344
1345                 if(isset($entry->photos)) {
1346                         foreach($entry->photos as $photo) {
1347                                 if($photo->type == 'profile') {
1348                                         $profile_photo = $photo->value;
1349                                         continue;
1350                                 }
1351                         }
1352                 }
1353
1354                 if(isset($entry->updated))
1355                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1356
1357                 if(isset($entry->network))
1358                         $network = $entry->network;
1359
1360                 if(isset($entry->currentLocation))
1361                         $location = $entry->currentLocation;
1362
1363                 if(isset($entry->aboutMe))
1364                         $about = html2bbcode($entry->aboutMe);
1365
1366                 if(isset($entry->gender))
1367                         $gender = $entry->gender;
1368
1369                 if(isset($entry->generation) AND ($entry->generation > 0))
1370                         $generation = ++$entry->generation;
1371
1372                 if(isset($entry->tags))
1373                         foreach($entry->tags as $tag)
1374                                 $keywords = implode(", ", $tag);
1375
1376                 if ($generation > 0) {
1377                         $success = true;
1378
1379                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1380                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1381                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1382                 }
1383         }
1384         return $success;
1385 }
1386
1387 /**
1388  * @brief Removes unwanted parts from a contact url
1389  *
1390  * @param string $url Contact url
1391  * @return string Contact url with the wanted parts
1392  */
1393 function clean_contact_url($url) {
1394         $parts = parse_url($url);
1395
1396         if (!isset($parts["scheme"]) OR !isset($parts["host"]))
1397                 return $url;
1398
1399         $new_url = $parts["scheme"]."://".$parts["host"];
1400
1401         if (isset($parts["port"]))
1402                 $new_url .= ":".$parts["port"];
1403
1404         if (isset($parts["path"]))
1405                 $new_url .= $parts["path"];
1406
1407         if ($new_url != $url)
1408                 logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".App::callstack(), LOGGER_DEBUG);
1409
1410         return $new_url;
1411 }
1412
1413 /**
1414  * @brief Replace alternate OStatus user format with the primary one
1415  *
1416  * @param arr $contact contact array (called by reference)
1417  */
1418 function fix_alternate_contact_address(&$contact) {
1419         if (($contact["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($contact["url"])) {
1420                 $data = probe_url($contact["url"]);
1421                 if ($contact["network"] == NETWORK_OSTATUS) {
1422                         logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1423                         $contact["url"] = $data["url"];
1424                         $contact["addr"] = $data["addr"];
1425                         $contact["alias"] = $data["alias"];
1426                         $contact["server_url"] = $data["baseurl"];
1427                 }
1428         }
1429 }
1430
1431 /**
1432  * @brief Fetch the gcontact id, add an entry if not existed
1433  *
1434  * @param arr $contact contact array
1435  * @return bool|int Returns false if not found, integer if contact was found
1436  */
1437 function get_gcontact_id($contact) {
1438
1439         $gcontact_id = 0;
1440         $doprobing = false;
1441
1442         if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
1443                 logger("Invalid network for contact url ".$contact["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1444                 return false;
1445         }
1446
1447         if ($contact["network"] == NETWORK_STATUSNET)
1448                 $contact["network"] = NETWORK_OSTATUS;
1449
1450         // Replace alternate OStatus user format with the primary one
1451         fix_alternate_contact_address($contact);
1452
1453         // Remove unwanted parts from the contact url (e.g. "?zrl=...")
1454         if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS)))
1455                 $contact["url"] = clean_contact_url($contact["url"]);
1456
1457         $r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1458                 dbesc(normalise_link($contact["url"])));
1459
1460         if ($r) {
1461                 $gcontact_id = $r[0]["id"];
1462
1463                 // Update every 90 days
1464                 if (in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
1465                         $last_failure_str = $r[0]["last_failure"];
1466                         $last_failure = strtotime($r[0]["last_failure"]);
1467                         $last_contact_str = $r[0]["last_contact"];
1468                         $last_contact = strtotime($r[0]["last_contact"]);
1469                         $doprobing = (((time() - $last_contact) > (90 * 86400)) AND ((time() - $last_failure) > (90 * 86400)));
1470                 }
1471         } else {
1472                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `generation`)
1473                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
1474                         dbesc($contact["name"]),
1475                         dbesc($contact["nick"]),
1476                         dbesc($contact["addr"]),
1477                         dbesc($contact["network"]),
1478                         dbesc($contact["url"]),
1479                         dbesc(normalise_link($contact["url"])),
1480                         dbesc($contact["photo"]),
1481                         dbesc(datetime_convert()),
1482                         dbesc(datetime_convert()),
1483                         dbesc($contact["location"]),
1484                         dbesc($contact["about"]),
1485                         intval($contact["generation"])
1486                 );
1487
1488                 $r = q("SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1489                         dbesc(normalise_link($contact["url"])));
1490
1491                 if ($r) {
1492                         $gcontact_id = $r[0]["id"];
1493
1494                         $doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
1495                 }
1496         }
1497
1498         if ($doprobing) {
1499                 logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
1500                 proc_run('php', 'include/gprobe.php', bin2hex($contact["url"]));
1501         }
1502
1503         if ((count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1504          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1505                 dbesc(normalise_link($contact["url"])),
1506                 intval($gcontact_id));
1507
1508         return $gcontact_id;
1509 }
1510
1511 /**
1512  * @brief Updates the gcontact table from a given array
1513  *
1514  * @param arr $contact contact array
1515  * @return bool|int Returns false if not found, integer if contact was found
1516  */
1517 function update_gcontact($contact) {
1518
1519         /// @todo update contact table as well
1520
1521         $gcontact_id = get_gcontact_id($contact);
1522
1523         if (!$gcontact_id)
1524                 return false;
1525
1526         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1527                         `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1528                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1529                 intval($gcontact_id));
1530
1531         // Get all field names
1532         $fields = array();
1533         foreach ($r[0] AS $field => $data)
1534                 $fields[$field] = $data;
1535
1536         unset($fields["url"]);
1537         unset($fields["updated"]);
1538
1539         // Bugfix: We had an error in the storing of keywords which lead to the "0"
1540         // This value is still transmitted via poco.
1541         if ($contact["keywords"] == "0")
1542                 unset($contact["keywords"]);
1543
1544         if ($r[0]["keywords"] == "0")
1545                 $r[0]["keywords"] = "";
1546
1547         // assign all unassigned fields from the database entry
1548         foreach ($fields AS $field => $data)
1549                 if (!isset($contact[$field]) OR ($contact[$field] == ""))
1550                         $contact[$field] = $r[0][$field];
1551
1552         if ($contact["network"] == NETWORK_STATUSNET)
1553                 $contact["network"] = NETWORK_OSTATUS;
1554
1555         // Replace alternate OStatus user format with the primary one
1556         fix_alternate_contact_address($contact);
1557
1558         if (!isset($contact["updated"]))
1559                 $contact["updated"] = datetime_convert();
1560
1561         if ($contact["server_url"] == "") {
1562                 $server_url = $contact["url"];
1563
1564                 $server_url = matching_url($server_url, $contact["alias"]);
1565                 if ($server_url != "")
1566                         $contact["server_url"] = $server_url;
1567
1568                 $server_url = matching_url($server_url, $contact["photo"]);
1569                 if ($server_url != "")
1570                         $contact["server_url"] = $server_url;
1571
1572                 $server_url = matching_url($server_url, $contact["notify"]);
1573                 if ($server_url != "")
1574                         $contact["server_url"] = $server_url;
1575         } else
1576                 $contact["server_url"] = normalise_link($contact["server_url"]);
1577
1578         if (($contact["addr"] == "") AND ($contact["server_url"] != "") AND ($contact["nick"] != "")) {
1579                 $hostname = str_replace("http://", "", $contact["server_url"]);
1580                 $contact["addr"] = $contact["nick"]."@".$hostname;
1581         }
1582
1583         // Check if any field changed
1584         $update = false;
1585         unset($fields["generation"]);
1586
1587         if ((($contact["generation"] > 0) AND ($contact["generation"] <= $r[0]["generation"])) OR ($r[0]["generation"] == 0)) {
1588                 foreach ($fields AS $field => $data)
1589                         if ($contact[$field] != $r[0][$field]) {
1590                                 logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
1591                                 $update = true;
1592                         }
1593
1594                 if ($contact["generation"] < $r[0]["generation"]) {
1595                         logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
1596                         $update = true;
1597                 }
1598         }
1599
1600         if ($update) {
1601                 logger("Update gcontact for ".$contact["url"]." Callstack: ".App::callstack(), LOGGER_DEBUG);
1602
1603                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1604                                         `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
1605                                         `alias` = '%s', `notify` = '%s', `url` = '%s',
1606                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1607                                         `server_url` = '%s', `connect` = '%s'
1608                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1609                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1610                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1611                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1612                         intval($contact["nsfw"]), dbesc($contact["alias"]), dbesc($contact["notify"]),
1613                         dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1614                         intval($contact["generation"]), dbesc($contact["updated"]),
1615                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1616                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1617
1618
1619                 // Now update the contact entry with the user id "0" as well.
1620                 // This is used for the shadow copies of public items.
1621                 $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
1622                         dbesc(normalise_link($contact["url"])));
1623
1624                 if ($r) {
1625                         logger("Update shadow contact ".$r[0]["id"], LOGGER_DEBUG);
1626
1627                         update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
1628
1629                         q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s',
1630                                                 `network` = '%s', `bd` = '%s', `gender` = '%s',
1631                                                 `keywords` = '%s', `alias` = '%s', `url` = '%s',
1632                                                 `location` = '%s', `about` = '%s'
1633                                         WHERE `id` = %d",
1634                                 dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["addr"]),
1635                                 dbesc($contact["network"]), dbesc($contact["birthday"]), dbesc($contact["gender"]),
1636                                 dbesc($contact["keywords"]), dbesc($contact["alias"]), dbesc($contact["url"]),
1637                                 dbesc($contact["location"]), dbesc($contact["about"]), intval($r[0]["id"]));
1638                 }
1639         }
1640
1641         return $gcontact_id;
1642 }
1643
1644 /**
1645  * @brief Updates the gcontact entry from probe
1646  *
1647  * @param str $url profile link
1648  */
1649 function update_gcontact_from_probe($url) {
1650         $data = probe_url($url);
1651
1652         if (in_array($data["network"], array(NETWORK_PHANTOM))) {
1653                 logger("Invalid network for contact url ".$data["url"]." - Called by: ".App::callstack(), LOGGER_DEBUG);
1654                 return;
1655         }
1656
1657         update_gcontact($data);
1658 }
1659
1660 /**
1661  * @brief Fetches users of given GNU Social server
1662  *
1663  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1664  *
1665  * @param str $server Server address
1666  */
1667 function gs_fetch_users($server) {
1668
1669         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1670
1671         $a = get_app();
1672
1673         $url = $server."/main/statistics";
1674
1675         $result = z_fetch_url($url);
1676         if (!$result["success"])
1677                 return false;
1678
1679         $statistics = json_decode($result["body"]);
1680
1681         if (is_object($statistics->config)) {
1682                 if ($statistics->config->instance_with_ssl)
1683                         $server = "https://";
1684                 else
1685                         $server = "http://";
1686
1687                 $server .= $statistics->config->instance_address;
1688
1689                 $hostname = $statistics->config->instance_address;
1690         } else {
1691                 if ($statistics->instance_with_ssl)
1692                         $server = "https://";
1693                 else
1694                         $server = "http://";
1695
1696                 $server .= $statistics->instance_address;
1697
1698                 $hostname = $statistics->instance_address;
1699         }
1700
1701         if (is_object($statistics->users))
1702                 foreach ($statistics->users AS $nick => $user) {
1703                         $profile_url = $server."/".$user->nickname;
1704
1705                         $contact = array("url" => $profile_url,
1706                                         "name" => $user->fullname,
1707                                         "addr" => $user->nickname."@".$hostname,
1708                                         "nick" => $user->nickname,
1709                                         "about" => $user->bio,
1710                                         "network" => NETWORK_OSTATUS,
1711                                         "photo" => $a->get_baseurl()."/images/person-175.jpg");
1712                         get_gcontact_id($contact);
1713                 }
1714 }
1715
1716 /**
1717  * @brief Asking GNU Social server on a regular base for their user data
1718  *
1719  */
1720 function gs_discover() {
1721
1722         $requery_days = intval(get_config("system", "poco_requery_days"));
1723
1724         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1725
1726         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1727                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1728
1729         if (!$r)
1730                 return;
1731
1732         foreach ($r AS $server) {
1733                 gs_fetch_users($server["url"]);
1734                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1735         }
1736 }
1737 ?>