include/socgraph.php

   1 <?php
   2 /**
   3  * @file include/socgraph.php
   4  *
   5  * @todo Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
   6  * @todo Fetch profile data from profile page for Redmatrix users
   7  * @todo Detect if it is a forum
   8  */
   9
  10 require_once('include/datetime.php');
  11 require_once("include/Scrape.php");
  12 require_once("include/html2bbcode.php");
  13
  14
  15 /*
  16  * poco_load
  17  *
  18  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  19  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  20  * if anything (name or photo) has changed.
  21  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  22  *
  23  * Once the global contact is stored add (if necessary) the contact linkage which associates
  24  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  25  * pointing to the same global contact id.
  26  *
  27  */
  28
  29
  30
  31
  32 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  33
  34         $a = get_app();
  35
  36         if($cid) {
  37                 if((! $url) || (! $uid)) {
  38                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  39                                 intval($cid)
  40                         );
  41                         if(count($r)) {
  42                                 $url = $r[0]['poco'];
  43                                 $uid = $r[0]['uid'];
  44                         }
  45                 }
  46                 if(! $uid)
  47                         return;
  48         }
  49
  50         if(! $url)
  51                 return;
  52
  53         $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation') ;
  54
  55         logger('poco_load: ' . $url, LOGGER_DEBUG);
  56
  57         $s = fetch_url($url);
  58
  59         logger('poco_load: returns ' . $s, LOGGER_DATA);
  60
  61         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  62
  63         if(($a->get_curl_code() > 299) || (! $s))
  64                 return;
  65
  66         $j = json_decode($s);
  67
  68         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  69
  70         if(! isset($j->entry))
  71                 return;
  72
  73         $total = 0;
  74         foreach($j->entry as $entry) {
  75
  76                 $total ++;
  77                 $profile_url = '';
  78                 $profile_photo = '';
  79                 $connect_url = '';
  80                 $name = '';
  81                 $network = '';
  82                 $updated = '0000-00-00 00:00:00';
  83                 $location = '';
  84                 $about = '';
  85                 $keywords = '';
  86                 $gender = '';
  87                 $generation = 0;
  88
  89                 $name = $entry->displayName;
  90
  91                 if(isset($entry->urls)) {
  92                         foreach($entry->urls as $url) {
  93                                 if($url->type == 'profile') {
  94                                         $profile_url = $url->value;
  95                                         continue;
  96                                 }
  97                                 if($url->type == 'webfinger') {
  98                                         $connect_url = str_replace('acct:' , '', $url->value);
  99                                         continue;
 100                                 }
 101                         }
 102                 }
 103                 if(isset($entry->photos)) {
 104                         foreach($entry->photos as $photo) {
 105                                 if($photo->type == 'profile') {
 106                                         $profile_photo = $photo->value;
 107                                         continue;
 108                                 }
 109                         }
 110                 }
 111
 112                 if(isset($entry->updated))
 113                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 114
 115                 if(isset($entry->network))
 116                         $network = $entry->network;
 117
 118                 if(isset($entry->currentLocation))
 119                         $location = $entry->currentLocation;
 120
 121                 if(isset($entry->aboutMe))
 122                         $about = html2bbcode($entry->aboutMe);
 123
 124                 if(isset($entry->gender))
 125                         $gender = $entry->gender;
 126
 127                 if(isset($entry->generation) AND ($entry->generation > 0))
 128                         $generation = ++$entry->generation;
 129
 130                 if(isset($entry->tags))
 131                         foreach($entry->tags as $tag)
 132                                 $keywords = implode(", ", $tag);
 133
 134                 // If you query a Friendica server for its profiles, the network has to be Friendica
 135                 /// TODO It could also be a Redmatrix server
 136                 //if ($uid == 0)
 137                 //      $network = NETWORK_DFRN;
 138
 139                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 140
 141                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 142                 if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 143                         q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 144                                 WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 145                                 dbesc($location),
 146                                 dbesc($about),
 147                                 dbesc($keywords),
 148                                 dbesc($gender),
 149                                 dbesc(normalise_link($profile_url)),
 150                                 dbesc(NETWORK_DFRN));
 151         }
 152         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 153
 154         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 155                 intval($cid),
 156                 intval($uid),
 157                 intval($zcid)
 158         );
 159
 160 }
 161
 162 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 163
 164         $a = get_app();
 165
 166         // Generation:
 167         //  0: No definition
 168         //  1: Profiles on this server
 169         //  2: Contacts of profiles on this server
 170         //  3: Contacts of contacts of profiles on this server
 171         //  4: ...
 172
 173         $gcid = "";
 174
 175         $alternate = poco_alternate_ostatus_url($profile_url);
 176
 177         if ($profile_url == "")
 178                 return $gcid;
 179
 180         $urlparts = parse_url($profile_url);
 181         if (!isset($urlparts["scheme"]))
 182                 return $gcid;
 183
 184         if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 185                                                 "identi.ca", "alpha.app.net")))
 186                 return $gcid;
 187
 188         $orig_updated = $updated;
 189
 190         // Don't store the statusnet connector as network
 191         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 192         if ($network == NETWORK_STATUSNET)
 193                 $network = "";
 194
 195         // The global contacts should contain the original picture, not the cached one
 196         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 197                 $profile_photo = "";
 198
 199         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 200                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 201         );
 202         if(count($r))
 203                 $network = $r[0]["network"];
 204
 205         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 206                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 207                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 208                 );
 209                 if(count($r)) {
 210                         $network = $r[0]["network"];
 211                         //$profile_url = $r[0]["url"];
 212                 }
 213         }
 214
 215         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 216                 dbesc(normalise_link($profile_url))
 217         );
 218
 219         if (count($x)) {
 220                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 221                         $network = $x[0]["network"];
 222
 223                 if ($updated == "0000-00-00 00:00:00")
 224                         $updated = $x[0]["updated"];
 225
 226                 $created = $x[0]["created"];
 227                 $server_url = $x[0]["server_url"];
 228                 $nick = $x[0]["nick"];
 229                 $addr = $x[0]["addr"];
 230                 $alias =  $x[0]["alias"];
 231                 $notify =  $x[0]["notify"];
 232         } else {
 233                 $created = "0000-00-00 00:00:00";
 234                 $server_url = "";
 235
 236                 $urlparts = parse_url($profile_url);
 237                 $nick = end(explode("/", $urlparts["path"]));
 238                 $addr = "";
 239                 $alias = "";
 240                 $notify = "";
 241         }
 242
 243         if ((($network == "") OR ($name == "") OR ($addr == "") OR ($profile_photo == "") OR ($server_url == "") OR $alternate)
 244                 AND poco_reachable($profile_url, $server_url, $network, false)) {
 245                 $data = probe_url($profile_url);
 246
 247                 $orig_profile = $profile_url;
 248
 249                 $network = $data["network"];
 250                 $name = $data["name"];
 251                 $nick = $data["nick"];
 252                 $addr = $data["addr"];
 253                 $alias = $data["alias"];
 254                 $notify = $data["notify"];
 255                 $profile_url = $data["url"];
 256                 $profile_photo = $data["photo"];
 257                 $server_url = $data["baseurl"];
 258
 259                 if ($alternate AND ($network == NETWORK_OSTATUS)) {
 260                         // Delete the old entry - if it exists
 261                         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 262                         if ($r) {
 263                                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
 264                                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
 265                         }
 266
 267                         // possibly create a new entry
 268                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 269                 }
 270         }
 271
 272         if ($alternate AND ($network == NETWORK_OSTATUS))
 273                 return $gcid;
 274
 275         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 276                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 277                         dbesc($network),
 278                         dbesc(normalise_link($profile_url))
 279                 );
 280         }
 281
 282         if (($name == "") OR ($profile_photo == ""))
 283                 return $gcid;
 284
 285         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 286                 return $gcid;
 287
 288         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 289
 290         poco_check_server($server_url, $network);
 291
 292         $gcontact = array("url" => $profile_url,
 293                         "addr" => $addr,
 294                         "alias" => $alias,
 295                         "name" => $name,
 296                         "network" => $network,
 297                         "photo" => $profile_photo,
 298                         "about" => $about,
 299                         "location" => $location,
 300                         "gender" => $gender,
 301                         "keywords" => $keywords,
 302                         "server_url" => $server_url,
 303                         "connect" => $connect_url,
 304                         "notify" => $notify,
 305                         "updated" => $updated,
 306                         "generation" => $generation);
 307
 308         $gcid = update_gcontact($gcontact);
 309
 310         if(!$gcid)
 311                 return $gcid;
 312
 313         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 314                 intval($cid),
 315                 intval($uid),
 316                 intval($gcid),
 317                 intval($zcid)
 318         );
 319         if(! count($r)) {
 320                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 321                         intval($cid),
 322                         intval($uid),
 323                         intval($gcid),
 324                         intval($zcid),
 325                         dbesc(datetime_convert())
 326                 );
 327         } else {
 328                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 329                         dbesc(datetime_convert()),
 330                         intval($cid),
 331                         intval($uid),
 332                         intval($gcid),
 333                         intval($zcid)
 334                 );
 335         }
 336
 337         return $gcid;
 338 }
 339
 340 function poco_reachable($profile, $server = "", $network = "", $force = false) {
 341
 342         if ($server == "")
 343                 $server = poco_detect_server($profile);
 344
 345         if ($server == "")
 346                 return true;
 347
 348         return poco_check_server($server, $network, $force);
 349 }
 350
 351 function poco_detect_server($profile) {
 352
 353         // Try to detect the server path based upon some known standard paths
 354         $server_url = "";
 355
 356         if ($server_url == "") {
 357                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 358                 if ($friendica != $profile) {
 359                         $server_url = $friendica;
 360                         $network = NETWORK_DFRN;
 361                 }
 362         }
 363
 364         if ($server_url == "") {
 365                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 366                 if ($diaspora != $profile) {
 367                         $server_url = $diaspora;
 368                         $network = NETWORK_DIASPORA;
 369                 }
 370         }
 371
 372         if ($server_url == "") {
 373                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 374                 if ($red != $profile) {
 375                         $server_url = $red;
 376                         $network = NETWORK_DIASPORA;
 377                 }
 378         }
 379
 380         return $server_url;
 381 }
 382
 383 function poco_alternate_ostatus_url($url) {
 384         return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
 385 }
 386
 387 function poco_last_updated($profile, $force = false) {
 388
 389         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 390                         dbesc(normalise_link($profile)));
 391
 392         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 393                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 394                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 395
 396         if ($gcontacts[0]["server_url"] != "")
 397                 $server_url = $gcontacts[0]["server_url"];
 398         else
 399                 $server_url = poco_detect_server($profile);
 400
 401         if ($server_url != "") {
 402                 if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
 403
 404                         if ($force)
 405                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 406                                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 407
 408                         return false;
 409                 }
 410
 411                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 412                         dbesc($server_url), dbesc(normalise_link($profile)));
 413         }
 414
 415         if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
 416                 $server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
 417                         dbesc(normalise_link($server_url)));
 418
 419                 if ($server)
 420                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 421                                 dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
 422                 else
 423                         return;
 424         }
 425
 426         // noscrape is really fast so we don't cache the call.
 427         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 428
 429                 //  Use noscrape if possible
 430                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 431
 432                 if ($server) {
 433                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 434
 435                          if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
 436
 437                                 $noscrape = json_decode($noscraperet["body"], true);
 438
 439                                 if (($noscrape["fn"] != "") AND ($noscrape["fn"] != $gcontacts[0]["name"]))
 440                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 441                                                 dbesc($noscrape["fn"]), dbesc(normalise_link($profile)));
 442
 443                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 444                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 445                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 446
 447                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 448                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 449                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 450
 451                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 452                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 453                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 454
 455                                 if (($noscrape["pdesc"] != "") AND ($noscrape["pdesc"] != $gcontacts[0]["about"]))
 456                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 457                                                 dbesc($noscrape["pdesc"]), dbesc(normalise_link($profile)));
 458
 459                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["about"]))
 460                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 461                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 462
 463                                 if (isset($noscrape["comm"]) AND ($noscrape["comm"] != $gcontacts[0]["community"]))
 464                                         q("UPDATE `gcontact` SET `community` = %d WHERE `nurl` = '%s'",
 465                                                 intval($noscrape["comm"]), dbesc(normalise_link($profile)));
 466
 467                                 if (isset($noscrape["tags"]))
 468                                         $keywords = implode(" ", $noscrape["tags"]);
 469                                 else
 470                                         $keywords = "";
 471
 472                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 473                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 474                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 475
 476                                 $location = $noscrape["locality"];
 477
 478                                 if ($noscrape["region"] != "") {
 479                                         if ($location != "")
 480                                                 $location .= ", ";
 481
 482                                         $location .= $noscrape["region"];
 483                                 }
 484
 485                                 if ($noscrape["country-name"] != "") {
 486                                         if ($location != "")
 487                                                 $location .= ", ";
 488
 489                                         $location .= $noscrape["country-name"];
 490                                 }
 491
 492                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 493                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 494                                                 dbesc($location), dbesc(normalise_link($profile)));
 495
 496                                 // If we got data from noscrape then mark the contact as reachable
 497                                 if (is_array($noscrape) AND count($noscrape))
 498                                         q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
 499                                                 dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 500
 501                                 return $noscrape["updated"];
 502                         }
 503                 }
 504         }
 505
 506         // If we only can poll the feed, then we only do this once a while
 507         if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 508                 return $gcontacts[0]["updated"];
 509
 510         $data = probe_url($profile);
 511
 512         // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
 513         // Then check the other link and delete this one
 514         if (($data["network"] == NETWORK_OSTATUS) AND poco_alternate_ostatus_url($profile) AND
 515                 (normalise_link($profile) == normalise_link($data["alias"])) AND
 516                 (normalise_link($profile) != normalise_link($data["url"]))) {
 517
 518                 // Delete the old entry
 519                 q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
 520                 q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
 521
 522                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], $gcontacts[0]["about"], $gcontacts[0]["location"],
 523                                 $gcontacts[0]["gender"], $gcontacts[0]["keywords"], $data["addr"], $gcontacts[0]["updated"], $gcontacts[0]["generation"]);
 524
 525                 poco_last_updated($data["url"], $force);
 526
 527                 return false;
 528         }
 529
 530         if (($data["poll"] == "") OR (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
 531                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 532                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 533                 return false;
 534         }
 535
 536         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 537                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 538                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 539
 540         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 541                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 542                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 543
 544         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 545                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 546                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 547
 548         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 549                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 550                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 551
 552         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 553                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 554                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 555
 556         $feedret = z_fetch_url($data["poll"]);
 557
 558         if (!$feedret["success"]) {
 559                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 560                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 561                 return false;
 562         }
 563
 564         $doc = new DOMDocument();
 565         @$doc->loadXML($feedret["body"]);
 566
 567         $xpath = new DomXPath($doc);
 568         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 569
 570         $entries = $xpath->query('/atom:feed/atom:entry');
 571
 572         $last_updated = "";
 573
 574         foreach ($entries AS $entry) {
 575                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 576                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 577
 578                 if ($last_updated < $published)
 579                         $last_updated = $published;
 580
 581                 if ($last_updated < $updated)
 582                         $last_updated = $updated;
 583         }
 584
 585         // Maybe there aren't any entries. Then check if it is a valid feed
 586         if ($last_updated == "")
 587                 if ($xpath->query('/atom:feed')->length > 0)
 588                         $last_updated = "0000-00-00 00:00:00";
 589
 590         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 591                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 592
 593         if (($gcontacts[0]["generation"] == 0))
 594                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 595                         dbesc(normalise_link($profile)));
 596
 597         return($last_updated);
 598 }
 599
 600 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 601         $now = strtotime(datetime_convert());
 602
 603         if ($updated > $last_contact)
 604                 $contact_time = strtotime($updated);
 605         else
 606                 $contact_time = strtotime($last_contact);
 607
 608         $failure_time = strtotime($last_failure);
 609         $created_time = strtotime($created);
 610
 611         // If there is no "created" time then use the current time
 612         if ($created_time <= 0)
 613                 $created_time = $now;
 614
 615         // If the last contact was less than 24 hours then don't update
 616         if (($now - $contact_time) < (60 * 60 * 24))
 617                 return false;
 618
 619         // If the last failure was less than 24 hours then don't update
 620         if (($now - $failure_time) < (60 * 60 * 24))
 621                 return false;
 622
 623         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 624         //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 625         //      return false;
 626
 627         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 628         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 629                 return false;
 630
 631         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 632         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 633                 return false;
 634
 635         return true;
 636 }
 637
 638 function poco_to_boolean($val) {
 639         if (($val == "true") OR ($val == 1))
 640                 return(true);
 641         if (($val == "false") OR ($val == 0))
 642                 return(false);
 643
 644         return ($val);
 645 }
 646
 647 function poco_check_server($server_url, $network = "", $force = false) {
 648
 649         // Unify the server address
 650         $server_url = trim($server_url, "/");
 651         $server_url = str_replace("/index.php", "", $server_url);
 652
 653         if ($server_url == "")
 654                 return false;
 655
 656         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 657         if ($servers) {
 658
 659                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 660                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 661                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 662
 663                 $poco = $servers[0]["poco"];
 664                 $noscrape = $servers[0]["noscrape"];
 665
 666                 if ($network == "")
 667                         $network = $servers[0]["network"];
 668
 669                 $last_contact = $servers[0]["last_contact"];
 670                 $last_failure = $servers[0]["last_failure"];
 671                 $version = $servers[0]["version"];
 672                 $platform = $servers[0]["platform"];
 673                 $site_name = $servers[0]["site_name"];
 674                 $info = $servers[0]["info"];
 675                 $register_policy = $servers[0]["register_policy"];
 676
 677                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 678                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 679                         return ($last_contact >= $last_failure);
 680                 }
 681         } else {
 682                 $poco = "";
 683                 $noscrape = "";
 684                 $version = "";
 685                 $platform = "";
 686                 $site_name = "";
 687                 $info = "";
 688                 $register_policy = -1;
 689
 690                 $last_contact = "0000-00-00 00:00:00";
 691                 $last_failure = "0000-00-00 00:00:00";
 692         }
 693         logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
 694
 695         $failure = false;
 696         $orig_last_failure = $last_failure;
 697
 698         // Check if the page is accessible via SSL.
 699         $server_url = str_replace("http://", "https://", $server_url);
 700         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 701
 702         // Maybe the page is unencrypted only?
 703         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 704         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 705                 $server_url = str_replace("https://", "http://", $server_url);
 706                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 707
 708                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 709         }
 710
 711         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 712                 // Workaround for bad configured servers (known nginx problem)
 713                 if ($serverret["debug"]["http_code"] != "403") {
 714                         $last_failure = datetime_convert();
 715                         $failure = true;
 716                 }
 717         } elseif ($network == NETWORK_DIASPORA)
 718                 $last_contact = datetime_convert();
 719
 720         if (!$failure) {
 721                 // Test for Diaspora
 722                 $serverret = z_fetch_url($server_url);
 723
 724                 if (!$serverret["success"] OR ($serverret["body"] == ""))
 725                         $failure = true;
 726                 else {
 727                         $lines = explode("\n",$serverret["header"]);
 728                         if(count($lines))
 729                                 foreach($lines as $line) {
 730                                         $line = trim($line);
 731                                         if(stristr($line,'X-Diaspora-Version:')) {
 732                                                 $platform = "Diaspora";
 733                                                 $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 734                                                 $version = trim(str_replace("x-diaspora-version:", "", $version));
 735                                                 $network = NETWORK_DIASPORA;
 736                                                 $versionparts = explode("-", $version);
 737                                                 $version = $versionparts[0];
 738                                         }
 739                                 }
 740                 }
 741         }
 742
 743         if (!$failure) {
 744                 // Test for Statusnet
 745                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 746                 // The "not implemented" is a special treatment for really, really old Friendica versions
 747                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 748                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 749                         $platform = "StatusNet";
 750                         $version = trim($serverret["body"], '"');
 751                         $network = NETWORK_OSTATUS;
 752                 }
 753
 754                 // Test for GNU Social
 755                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 756                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 757                         $platform = "GNU Social";
 758                         $version = trim($serverret["body"], '"');
 759                         $network = NETWORK_OSTATUS;
 760                 }
 761
 762                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 763                 if ($serverret["success"]) {
 764                         $data = json_decode($serverret["body"]);
 765
 766                         if (isset($data->site->server)) {
 767                                 $last_contact = datetime_convert();
 768
 769                                 if (isset($data->site->hubzilla)) {
 770                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 771                                         $version = $data->site->hubzilla->RED_VERSION;
 772                                         $network = NETWORK_DIASPORA;
 773                                 }
 774                                 if (isset($data->site->redmatrix)) {
 775                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 776                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 777                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 778                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 779
 780                                         $version = $data->site->redmatrix->RED_VERSION;
 781                                         $network = NETWORK_DIASPORA;
 782                                 }
 783                                 if (isset($data->site->friendica)) {
 784                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 785                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 786                                         $network = NETWORK_DFRN;
 787                                 }
 788
 789                                 $site_name = $data->site->name;
 790
 791                                 $data->site->closed = poco_to_boolean($data->site->closed);
 792                                 $data->site->private = poco_to_boolean($data->site->private);
 793                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 794
 795                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 796                                         $register_policy = REGISTER_APPROVE;
 797                                 elseif (!$data->site->closed AND !$data->site->private)
 798                                         $register_policy = REGISTER_OPEN;
 799                                 else
 800                                         $register_policy = REGISTER_CLOSED;
 801                         }
 802                 }
 803         }
 804
 805         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 806         if (!$failure) {
 807                 $serverret = z_fetch_url($server_url."/statistics.json");
 808                 if ($serverret["success"]) {
 809                         $data = json_decode($serverret["body"]);
 810                         if ($version == "")
 811                                 $version = $data->version;
 812
 813                         $site_name = $data->name;
 814
 815                         if (isset($data->network) AND ($platform == ""))
 816                                 $platform = $data->network;
 817
 818                         if ($platform == "Diaspora")
 819                                 $network = NETWORK_DIASPORA;
 820
 821                         if ($data->registrations_open)
 822                                 $register_policy = REGISTER_OPEN;
 823                         else
 824                                 $register_policy = REGISTER_CLOSED;
 825
 826                         if (isset($data->version))
 827                                 $last_contact = datetime_convert();
 828                 }
 829         }
 830
 831         // Check for noscrape
 832         // Friendica servers could be detected as OStatus servers
 833         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 834                 $serverret = z_fetch_url($server_url."/friendica/json");
 835
 836                 if (!$serverret["success"])
 837                         $serverret = z_fetch_url($server_url."/friendika/json");
 838
 839                 if ($serverret["success"]) {
 840                         $data = json_decode($serverret["body"]);
 841
 842                         if (isset($data->version)) {
 843                                 $last_contact = datetime_convert();
 844                                 $network = NETWORK_DFRN;
 845
 846                                 $noscrape = $data->no_scrape_url;
 847                                 $version = $data->version;
 848                                 $site_name = $data->site_name;
 849                                 $info = $data->info;
 850                                 $register_policy_str = $data->register_policy;
 851                                 $platform = $data->platform;
 852
 853                                 switch ($register_policy_str) {
 854                                         case "REGISTER_CLOSED":
 855                                                 $register_policy = REGISTER_CLOSED;
 856                                                 break;
 857                                         case "REGISTER_APPROVE":
 858                                                 $register_policy = REGISTER_APPROVE;
 859                                                 break;
 860                                         case "REGISTER_OPEN":
 861                                                 $register_policy = REGISTER_OPEN;
 862                                                 break;
 863                                 }
 864                         }
 865                 }
 866         }
 867
 868         // Look for poco
 869         if (!$failure) {
 870                 $serverret = z_fetch_url($server_url."/poco");
 871                 if ($serverret["success"]) {
 872                         $data = json_decode($serverret["body"]);
 873                         if (isset($data->totalResults)) {
 874                                 $poco = $server_url."/poco";
 875                                 $last_contact = datetime_convert();
 876                         }
 877                 }
 878         }
 879
 880         // Check again if the server exists
 881         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 882
 883         if ($servers)
 884                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 885                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 886                         dbesc($server_url),
 887                         dbesc($version),
 888                         dbesc($site_name),
 889                         dbesc($info),
 890                         intval($register_policy),
 891                         dbesc($poco),
 892                         dbesc($noscrape),
 893                         dbesc($network),
 894                         dbesc($platform),
 895                         dbesc($last_contact),
 896                         dbesc($last_failure),
 897                         dbesc(normalise_link($server_url))
 898                 );
 899         else
 900                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 901                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 902                                 dbesc($server_url),
 903                                 dbesc(normalise_link($server_url)),
 904                                 dbesc($version),
 905                                 dbesc($site_name),
 906                                 dbesc($info),
 907                                 intval($register_policy),
 908                                 dbesc($poco),
 909                                 dbesc($noscrape),
 910                                 dbesc($network),
 911                                 dbesc($platform),
 912                                 dbesc(datetime_convert()),
 913                                 dbesc($last_contact),
 914                                 dbesc($last_failure),
 915                                 dbesc(datetime_convert())
 916                 );
 917
 918         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 919
 920         return !$failure;
 921 }
 922
 923 function poco_contact_from_body($body, $created, $cid, $uid) {
 924         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 925                 function ($match) use ($created, $cid, $uid){
 926                         return(sub_poco_from_share($match, $created, $cid, $uid));
 927                 }, $body);
 928 }
 929
 930 function sub_poco_from_share($share, $created, $cid, $uid) {
 931         $profile = "";
 932         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 933         if ($matches[1] != "")
 934                 $profile = $matches[1];
 935
 936         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 937         if ($matches[1] != "")
 938                 $profile = $matches[1];
 939
 940         if ($profile == "")
 941                 return;
 942
 943         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 944         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 945 }
 946
 947 function poco_store($item) {
 948
 949         // Isn't it public?
 950         if ($item['private'])
 951                 return;
 952
 953         // Or is it from a network where we don't store the global contacts?
 954         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 955                 return;
 956
 957         // Is it a global copy?
 958         $store_gcontact = ($item["uid"] == 0);
 959
 960         // Is it a comment on a global copy?
 961         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 962                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 963                 $store_gcontact = count($q);
 964         }
 965
 966         if (!$store_gcontact)
 967                 return;
 968
 969         // "3" means: We don't know this contact directly (Maybe a reshared item)
 970         $generation = 3;
 971         $network = "";
 972         $profile_url = $item["author-link"];
 973
 974         // Is it a user from our server?
 975         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 976                 dbesc(normalise_link($item["author-link"])));
 977         if (count($q)) {
 978                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 979                 $generation = 1;
 980                 $network = NETWORK_DFRN;
 981         } else { // Is it a contact from a user on our server?
 982                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 983                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 984                         dbesc(normalise_link($item["author-link"])),
 985                         dbesc(normalise_link($item["author-link"])),
 986                         dbesc($item["author-link"]),
 987                         dbesc(NETWORK_STATUSNET));
 988                 if (count($q)) {
 989                         $generation = 2;
 990                         $network = $q[0]["network"];
 991                         $profile_url = $q[0]["url"];
 992                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 993                 }
 994         }
 995
 996         if ($generation == 3)
 997                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 998
 999         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
1000
1001         // Maybe its a body with a shared item? Then extract a global contact from it.
1002         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
1003 }
1004
1005 function count_common_friends($uid,$cid) {
1006
1007         $r = q("SELECT count(*) as `total`
1008                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1009                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1010                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1011                 AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
1012                 intval($cid),
1013                 intval($uid),
1014                 intval($uid),
1015                 intval($cid)
1016         );
1017
1018 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
1019         if(count($r))
1020                 return $r[0]['total'];
1021         return 0;
1022
1023 }
1024
1025
1026 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
1027
1028         if($shuffle)
1029                 $sql_extra = " order by rand() ";
1030         else
1031                 $sql_extra = " order by `gcontact`.`name` asc ";
1032
1033         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1034                 FROM `glink`
1035                 INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
1036                 INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
1037                 WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
1038                         AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
1039                         AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
1040                         AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1041                         $sql_extra LIMIT %d, %d",
1042                 intval($cid),
1043                 intval($uid),
1044                 intval($uid),
1045                 intval($cid),
1046                 intval($start),
1047                 intval($limit)
1048         );
1049
1050         return $r;
1051
1052 }
1053
1054
1055 function count_common_friends_zcid($uid,$zcid) {
1056
1057         $r = q("SELECT count(*) as `total`
1058                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1059                 where `glink`.`zcid` = %d
1060                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1061                 intval($zcid),
1062                 intval($uid)
1063         );
1064
1065         if(count($r))
1066                 return $r[0]['total'];
1067         return 0;
1068
1069 }
1070
1071 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1072
1073         if($shuffle)
1074                 $sql_extra = " order by rand() ";
1075         else
1076                 $sql_extra = " order by `gcontact`.`name` asc ";
1077
1078         $r = q("SELECT `gcontact`.*
1079                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1080                 where `glink`.`zcid` = %d
1081                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1082                 $sql_extra limit %d, %d",
1083                 intval($zcid),
1084                 intval($uid),
1085                 intval($start),
1086                 intval($limit)
1087         );
1088
1089         return $r;
1090
1091 }
1092
1093
1094 function count_all_friends($uid,$cid) {
1095
1096         $r = q("SELECT count(*) as `total`
1097                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1098                 where `glink`.`cid` = %d and `glink`.`uid` = %d AND
1099                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
1100                 intval($cid),
1101                 intval($uid)
1102         );
1103
1104         if(count($r))
1105                 return $r[0]['total'];
1106         return 0;
1107
1108 }
1109
1110
1111 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1112
1113         $r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
1114                 FROM `glink`
1115                 INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1116                 LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
1117                 WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
1118                 ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
1119                 ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
1120                 intval($uid),
1121                 intval($cid),
1122                 intval($uid),
1123                 intval($start),
1124                 intval($limit)
1125         );
1126
1127         return $r;
1128 }
1129
1130
1131
1132 function suggestion_query($uid, $start = 0, $limit = 80) {
1133
1134         if(! $uid)
1135                 return array();
1136
1137         $network = array(NETWORK_DFRN);
1138
1139         if (get_config('system','diaspora_enabled'))
1140                 $network[] = NETWORK_DIASPORA;
1141
1142         if (!get_config('system','ostatus_disabled'))
1143                 $network[] = NETWORK_OSTATUS;
1144
1145         $sql_network = implode("', '", $network);
1146         //$sql_network = "'".$sql_network."', ''";
1147         $sql_network = "'".$sql_network."'";
1148
1149         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1150                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1151                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1152                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1153                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1154                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1155                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1156                 AND `gcontact`.`network` IN (%s)
1157                 GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
1158                 intval($uid),
1159                 intval($uid),
1160                 intval($uid),
1161                 intval($uid),
1162                 $sql_network,
1163                 intval($start),
1164                 intval($limit)
1165         );
1166
1167         if(count($r) && count($r) >= ($limit -1))
1168                 return $r;
1169
1170         $r2 = q("SELECT gcontact.* FROM gcontact
1171                 INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
1172                 WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
1173                 AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
1174                 AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
1175                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1176                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1177                 AND `gcontact`.`network` IN (%s)
1178                 ORDER BY rand() LIMIT %d, %d",
1179                 intval($uid),
1180                 intval($uid),
1181                 intval($uid),
1182                 $sql_network,
1183                 intval($start),
1184                 intval($limit)
1185         );
1186
1187         $list = array();
1188         foreach ($r2 AS $suggestion)
1189                 $list[$suggestion["nurl"]] = $suggestion;
1190
1191         foreach ($r AS $suggestion)
1192                 $list[$suggestion["nurl"]] = $suggestion;
1193
1194         while (sizeof($list) > ($limit))
1195                 array_pop($list);
1196
1197         return $list;
1198 }
1199
1200 function update_suggestions() {
1201
1202         $a = get_app();
1203
1204         $done = array();
1205
1206         /// TODO Check if it is really neccessary to poll the own server
1207         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1208
1209         $done[] = $a->get_baseurl() . '/poco';
1210
1211         if(strlen(get_config('system','directory'))) {
1212                 $x = fetch_url(get_server()."/pubsites");
1213                 if($x) {
1214                         $j = json_decode($x);
1215                         if($j->entries) {
1216                                 foreach($j->entries as $entry) {
1217
1218                                         poco_check_server($entry->url);
1219
1220                                         $url = $entry->url . '/poco';
1221                                         if(! in_array($url,$done))
1222                                                 poco_load(0,0,0,$entry->url . '/poco');
1223                                 }
1224                         }
1225                 }
1226         }
1227
1228         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1229         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1230                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1231         );
1232
1233         if(count($r)) {
1234                 foreach($r as $rr) {
1235                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1236                         if(! in_array($base,$done))
1237                                 poco_load(0,0,0,$base);
1238                 }
1239         }
1240 }
1241
1242 function poco_discover_federation() {
1243         $last = get_config('poco','last_federation_discovery');
1244
1245         if($last) {
1246                 $next = $last + (24 * 60 * 60);
1247                 if($next > time())
1248                         return;
1249         }
1250
1251         // Discover Friendica, Hubzilla and Diaspora servers
1252         $serverdata = fetch_url("http://the-federation.info/pods.json");
1253
1254         if ($serverdata) {
1255                 $servers = json_decode($serverdata);
1256
1257                 foreach($servers->pods AS $server)
1258                         poco_check_server("https://".$server->host);
1259         }
1260
1261         // Discover GNU Social Servers
1262         if (!get_config('system','ostatus_disabled')) {
1263                 $serverdata = "http://gstools.org/api/get_open_instances/";
1264
1265                 $result = z_fetch_url($serverdata);
1266                 if ($result["success"]) {
1267                         $servers = json_decode($result["body"]);
1268
1269                         foreach($servers->data AS $server)
1270                                 poco_check_server($server->instance_address);
1271                 }
1272         }
1273
1274         set_config('poco','last_federation_discovery', time());
1275 }
1276
1277 function poco_discover($complete = false) {
1278
1279         // Update the server list
1280         poco_discover_federation();
1281
1282         $no_of_queries = 5;
1283
1284         $requery_days = intval(get_config("system", "poco_requery_days"));
1285
1286         if ($requery_days == 0)
1287                 $requery_days = 7;
1288
1289         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1290
1291         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1292         if ($r)
1293                 foreach ($r AS $server) {
1294
1295                         if (!poco_check_server($server["url"], $server["network"])) {
1296                                 // The server is not reachable? Okay, then we will try it later
1297                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1298                                 continue;
1299                         }
1300
1301                         // Fetch all users from the other server
1302                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1303
1304                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1305
1306                         $retdata = z_fetch_url($url);
1307                         if ($retdata["success"]) {
1308                                 $data = json_decode($retdata["body"]);
1309
1310                                 poco_discover_server($data, 2);
1311
1312                                 if (get_config('system','poco_discovery') > 1) {
1313
1314                                         $timeframe = get_config('system','poco_discovery_since');
1315                                         if ($timeframe == 0)
1316                                                 $timeframe = 30;
1317
1318                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1319
1320                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1321                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1322
1323                                         $success = false;
1324
1325                                         $retdata = z_fetch_url($url);
1326                                         if ($retdata["success"]) {
1327                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1328                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1329                                         }
1330
1331                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1332                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1333                                                 poco_discover_server_users($data, $server);
1334                                         }
1335                                 }
1336
1337                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1338                                 if (!$complete AND (--$no_of_queries == 0))
1339                                         break;
1340                         } else {
1341                                 // If the server hadn't replied correctly, then force a sanity check
1342                                 poco_check_server($server["url"], $server["network"], true);
1343
1344                                 // If we couldn't reach the server, we will try it some time later
1345                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1346                         }
1347                 }
1348 }
1349
1350 function poco_discover_server_users($data, $server) {
1351
1352         if (!isset($data->entry))
1353                 return;
1354
1355         foreach ($data->entry AS $entry) {
1356                 $username = "";
1357                 if (isset($entry->urls)) {
1358                         foreach($entry->urls as $url)
1359                                 if($url->type == 'profile') {
1360                                         $profile_url = $url->value;
1361                                         $urlparts = parse_url($profile_url);
1362                                         $username = end(explode("/", $urlparts["path"]));
1363                                 }
1364                 }
1365                 if ($username != "") {
1366                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1367
1368                         // Fetch all contacts from a given user from the other server
1369                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1370
1371                         $retdata = z_fetch_url($url);
1372                         if ($retdata["success"])
1373                                 poco_discover_server(json_decode($retdata["body"]), 3);
1374                 }
1375         }
1376 }
1377
1378 function poco_discover_server($data, $default_generation = 0) {
1379
1380         if (!isset($data->entry) OR !count($data->entry))
1381                 return false;
1382
1383         $success = false;
1384
1385         foreach ($data->entry AS $entry) {
1386                 $profile_url = '';
1387                 $profile_photo = '';
1388                 $connect_url = '';
1389                 $name = '';
1390                 $network = '';
1391                 $updated = '0000-00-00 00:00:00';
1392                 $location = '';
1393                 $about = '';
1394                 $keywords = '';
1395                 $gender = '';
1396                 $generation = $default_generation;
1397
1398                 $name = $entry->displayName;
1399
1400                 if(isset($entry->urls)) {
1401                         foreach($entry->urls as $url) {
1402                                 if($url->type == 'profile') {
1403                                         $profile_url = $url->value;
1404                                         continue;
1405                                 }
1406                                 if($url->type == 'webfinger') {
1407                                         $connect_url = str_replace('acct:' , '', $url->value);
1408                                         continue;
1409                                 }
1410                         }
1411                 }
1412
1413                 if(isset($entry->photos)) {
1414                         foreach($entry->photos as $photo) {
1415                                 if($photo->type == 'profile') {
1416                                         $profile_photo = $photo->value;
1417                                         continue;
1418                                 }
1419                         }
1420                 }
1421
1422                 if(isset($entry->updated))
1423                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1424
1425                 if(isset($entry->network))
1426                         $network = $entry->network;
1427
1428                 if(isset($entry->currentLocation))
1429                         $location = $entry->currentLocation;
1430
1431                 if(isset($entry->aboutMe))
1432                         $about = html2bbcode($entry->aboutMe);
1433
1434                 if(isset($entry->gender))
1435                         $gender = $entry->gender;
1436
1437                 if(isset($entry->generation) AND ($entry->generation > 0))
1438                         $generation = ++$entry->generation;
1439
1440                 if(isset($entry->tags))
1441                         foreach($entry->tags as $tag)
1442                                 $keywords = implode(", ", $tag);
1443
1444                 if ($generation > 0) {
1445                         $success = true;
1446
1447                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1448                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1449                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1450                 }
1451         }
1452         return $success;
1453 }
1454
1455 /**
1456  * @brief Fetch the gcontact id, add an entry if not existed
1457  *
1458  * @param arr $contact contact array
1459  * @return bool|int Returns false if not found, integer if contact was found
1460  */
1461 function get_gcontact_id($contact) {
1462
1463         $gcontact_id = 0;
1464
1465         if ($contact["network"] == NETWORK_STATUSNET)
1466                 $contact["network"] = NETWORK_OSTATUS;
1467
1468         $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1469                 dbesc(normalise_link($contact["url"])));
1470
1471         if ($r)
1472                 $gcontact_id = $r[0]["id"];
1473         else {
1474                 q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `generation`)
1475                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
1476                         dbesc($contact["name"]),
1477                         dbesc($contact["nick"]),
1478                         dbesc($contact["addr"]),
1479                         dbesc($contact["network"]),
1480                         dbesc($contact["url"]),
1481                         dbesc(normalise_link($contact["url"])),
1482                         dbesc($contact["photo"]),
1483                         dbesc(datetime_convert()),
1484                         dbesc(datetime_convert()),
1485                         dbesc($contact["location"]),
1486                         dbesc($contact["about"]),
1487                         intval($contact["generation"])
1488                 );
1489
1490                 $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
1491                         dbesc(normalise_link($contact["url"])));
1492
1493                 if ($r)
1494                         $gcontact_id = $r[0]["id"];
1495         }
1496
1497         if ((count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
1498          q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
1499                 dbesc(normalise_link($contact["url"])),
1500                 intval($gcontact_id));
1501
1502         return $gcontact_id;
1503 }
1504
1505 /**
1506  * @brief Updates the gcontact table from a given array
1507  *
1508  * @param arr $contact contact array
1509  * @return bool|int Returns false if not found, integer if contact was found
1510  */
1511 function update_gcontact($contact) {
1512
1513         /// @todo update contact table as well
1514
1515         $gcontact_id = get_gcontact_id($contact);
1516
1517         if (!$gcontact_id)
1518                 return false;
1519
1520         $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
1521                         `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
1522                 FROM `gcontact` WHERE `id` = %d LIMIT 1",
1523                 intval($gcontact_id));
1524
1525         // Get all field names
1526         $fields = array();
1527         foreach ($r[0] AS $field => $data)
1528                 $fields[$field] = $data;
1529
1530         unset($fields["url"]);
1531         unset($fields["updated"]);
1532
1533         // assign all unassigned fields from the database entry
1534         foreach ($fields AS $field => $data)
1535                 if (!isset($contact[$field]))
1536                         $contact[$field] = $r[0][$field];
1537
1538         if ($contact["network"] == NETWORK_STATUSNET)
1539                 $contact["network"] = NETWORK_OSTATUS;
1540
1541         if (!isset($contact["updated"]))
1542                 $contact["updated"] = datetime_convert();
1543
1544         // Check if any field changed
1545         $update = false;
1546         unset($fields["generation"]);
1547
1548         foreach ($fields AS $field => $data)
1549                 if ($contact[$field] != $r[0][$field])
1550                         $update = true;
1551
1552         if ($contact["generation"] < $r[0]["generation"])
1553                 $update = true;
1554
1555         if ($update) {
1556                 q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
1557                                         `birthday` = '%s', `gender` = '%s', `keywords` = %d, `hide` = %d, `nsfw` = %d,
1558                                         `alias` = '%s', `notify` = '%s', `url` = '%s',
1559                                         `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
1560                                         `server_url` = '%s', `connect` = '%s'
1561                                 WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
1562                         dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
1563                         dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
1564                         dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
1565                         intval($contact["nsfw"]), dbesc($contact["alias"]), dbesc($contact["notify"]),
1566                         dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
1567                         intval($contact["generation"]), dbesc($contact["updated"]),
1568                         dbesc($contact["server_url"]), dbesc($contact["connect"]),
1569                         dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
1570         }
1571
1572         return $gcontact_id;
1573 }
1574
1575 /**
1576  * @brief Updates the gcontact entry from probe
1577  *
1578  * @param str $url profile link
1579  */
1580 function update_gcontact_from_probe($url) {
1581         $data = probe_url($url);
1582
1583         if ($data["network"] != NETWORK_PHANTOM)
1584                 update_gcontact($data);
1585 }
1586
1587 /**
1588  * @brief Fetches users of given GNU Social server
1589  *
1590  * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
1591  *
1592  * @param str $server Server address
1593  */
1594 function gs_fetch_users($server) {
1595
1596         logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
1597
1598         $a = get_app();
1599
1600         $url = $server."/main/statistics";
1601
1602         $result = z_fetch_url($url);
1603         if (!$result["success"])
1604                 return false;
1605
1606         $statistics = json_decode($result["body"]);
1607
1608         if (is_object($statistics->config)) {
1609                 if ($statistics->config->instance_with_ssl)
1610                         $server = "https://";
1611                 else
1612                         $server = "http://";
1613
1614                 $server .= $statistics->config->instance_address;
1615
1616                 $hostname = $statistics->config->instance_address;
1617         } else {
1618                 if ($statistics->instance_with_ssl)
1619                         $server = "https://";
1620                 else
1621                         $server = "http://";
1622
1623                 $server .= $statistics->instance_address;
1624
1625                 $hostname = $statistics->instance_address;
1626         }
1627
1628         if (is_object($statistics->users))
1629                 foreach ($statistics->users AS $nick => $user) {
1630                         $profile_url = $server."/".$user->nickname;
1631
1632                         $contact = array("url" => $profile_url,
1633                                         "name" => $user->fullname,
1634                                         "addr" => $user->nickname."@".$hostname,
1635                                         "nick" => $user->nickname,
1636                                         "about" => $user->bio,
1637                                         "network" => NETWORK_OSTATUS,
1638                                         "photo" => $a->get_baseurl()."/images/person-175.jpg");
1639                         get_gcontact_id($contact);
1640                 }
1641 }
1642
1643 /**
1644  * @brief Asking GNU Social server on a regular base for their user data
1645  *
1646  */
1647 function gs_discover() {
1648
1649         $requery_days = intval(get_config("system", "poco_requery_days"));
1650
1651         $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
1652
1653         $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
1654                 dbesc(NETWORK_OSTATUS), dbesc($last_update));
1655
1656         if (!$r)
1657                 return;
1658
1659         foreach ($r AS $server) {
1660                 gs_fetch_users($server["url"]);
1661                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1662         }
1663 }
1664 ?>