include/Probe.php

   1 <?php
   2 /**
   3  * @file include/Probe.php
   4  * @brief Functions for probing URL
   5  *
   6  */
   7
   8 use \Friendica\Core\Config;
   9 use \Friendica\Core\PConfig;
  10
  11 require_once("include/feed.php");
  12 require_once('include/email.php');
  13 require_once('include/network.php');
  14
  15 /**
  16  * @brief This class contain functions for probing URL
  17  *
  18  */
  19 class Probe {
  20
  21         private static $baseurl;
  22
  23         /**
  24          * @brief Rearrange the array so that it always has the same order
  25          *
  26          * @param array $data Unordered data
  27          *
  28          * @return array Ordered data
  29          */
  30         private function rearrange_data($data) {
  31                 $fields = array("name", "nick", "guid", "url", "addr", "alias",
  32                                 "photo", "community", "keywords", "location", "about",
  33                                 "batch", "notify", "poll", "request", "confirm", "poco",
  34                                 "priority", "network", "pubkey", "baseurl");
  35
  36                 $newdata = array();
  37                 foreach ($fields AS $field)
  38                         if (isset($data[$field]))
  39                                 $newdata[$field] = $data[$field];
  40                         else
  41                                 $newdata[$field] = "";
  42
  43                 // We don't use the "priority" field anymore and replace it with a dummy.
  44                 $newdata["priority"] = 0;
  45
  46                 return $newdata;
  47         }
  48
  49         /**
  50          * @brief Probes for XRD data
  51          *
  52          * @return array
  53          *      'lrdd' => Link to LRDD endpoint
  54          *      'lrdd-xml' => Link to LRDD endpoint in XML format
  55          *      'lrdd-json' => Link to LRDD endpoint in JSON format
  56          */
  57         private function xrd($host) {
  58
  59                 // Reset the static variable
  60                 self::$baseurl = '';
  61
  62                 $ssl_url = "https://".$host."/.well-known/host-meta";
  63                 $url = "http://".$host."/.well-known/host-meta";
  64
  65                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
  66                 $redirects = 0;
  67
  68                 $ret = z_fetch_url($ssl_url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  69                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  70                         return false;
  71                 }
  72                 $xml = $ret['body'];
  73
  74                 $xrd = parse_xml_string($xml, false);
  75
  76                 if (!is_object($xrd)) {
  77                         $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  78                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  79                                 return false;
  80                         }
  81                         $xml = $ret['body'];
  82                         $xrd = parse_xml_string($xml, false);
  83                 }
  84                 if (!is_object($xrd))
  85                         return false;
  86
  87                 $links = xml::element_to_array($xrd);
  88                 if (!isset($links["xrd"]["link"]))
  89                         return false;
  90
  91                 $xrd_data = array();
  92
  93                 foreach ($links["xrd"]["link"] AS $value => $link) {
  94                         if (isset($link["@attributes"]))
  95                                 $attributes = $link["@attributes"];
  96                         elseif ($value == "@attributes")
  97                                 $attributes = $link;
  98                         else
  99                                 continue;
 100
 101                         if (($attributes["rel"] == "lrdd") AND
 102                                 ($attributes["type"] == "application/xrd+xml"))
 103                                 $xrd_data["lrdd-xml"] = $attributes["template"];
 104                         elseif (($attributes["rel"] == "lrdd") AND
 105                                 ($attributes["type"] == "application/json"))
 106                                 $xrd_data["lrdd-json"] = $attributes["template"];
 107                         elseif ($attributes["rel"] == "lrdd")
 108                                 $xrd_data["lrdd"] = $attributes["template"];
 109                 }
 110
 111                 self::$baseurl = "http://".$host;
 112
 113                 return $xrd_data;
 114         }
 115
 116         /**
 117          * @brief Perform Webfinger lookup and return DFRN data
 118          *
 119          * Given an email style address, perform webfinger lookup and
 120          * return the resulting DFRN profile URL, or if no DFRN profile URL
 121          * is located, returns an OStatus subscription template (prefixed
 122          * with the string 'stat:' to identify it as on OStatus template).
 123          * If this isn't an email style address just return $webbie.
 124          * Return an empty string if email-style addresses but webfinger fails,
 125          * or if the resultant personal XRD doesn't contain a supported
 126          * subscription/friend-request attribute.
 127          *
 128          * amended 7/9/2011 to return an hcard which could save potentially loading
 129          * a lengthy content page to scrape dfrn attributes
 130          *
 131          * @param string $webbie Address that should be probed
 132          * @param string $hcard Link to the hcard - is returned by reference
 133          *
 134          * @return string profile link
 135          */
 136
 137         public static function webfinger_dfrn($webbie, &$hcard) {
 138
 139                 $profile_link = '';
 140
 141                 $links = self::lrdd($webbie);
 142                 logger('webfinger_dfrn: '.$webbie.':'.print_r($links,true), LOGGER_DATA);
 143                 if (count($links)) {
 144                         foreach ($links as $link) {
 145                                 if ($link['@attributes']['rel'] === NAMESPACE_DFRN)
 146                                         $profile_link = $link['@attributes']['href'];
 147                                 if (($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) AND ($profile_link == ""))
 148                                         $profile_link = 'stat:'.$link['@attributes']['template'];
 149                                 if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
 150                                         $hcard = $link['@attributes']['href'];
 151                         }
 152                 }
 153                 return $profile_link;
 154         }
 155
 156         /**
 157          * @brief Check an URI for LRDD data
 158          *
 159          * this is a replacement for the "lrdd" function in include/network.php.
 160          * It isn't used in this class and has some redundancies in the code.
 161          * When time comes we can check the existing calls for "lrdd" if we can rework them.
 162          *
 163          * @param string $uri Address that should be probed
 164          *
 165          * @return array uri data
 166          */
 167         public static function lrdd($uri) {
 168
 169                 $lrdd = self::xrd($uri);
 170
 171                 if (!$lrdd) {
 172                         $parts = @parse_url($uri);
 173                         if (!$parts)
 174                                 return array();
 175
 176                         $host = $parts["host"];
 177                         if (isset($parts["port"])) {
 178                                 $host .= ':'.$parts["port"];
 179                         }
 180
 181                         $path_parts = explode("/", trim($parts["path"], "/"));
 182
 183                         $nick = array_pop($path_parts);
 184
 185                         do {
 186                                 $lrdd = self::xrd($host);
 187                                 $host .= "/".array_shift($path_parts);
 188                         } while (!$lrdd AND (sizeof($path_parts) > 0));
 189                 }
 190
 191                 if (!$lrdd)
 192                         return array();
 193
 194                 foreach ($lrdd AS $key => $link) {
 195                         if ($webfinger)
 196                                 continue;
 197
 198                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
 199                                 continue;
 200
 201                         $path = str_replace('{uri}', urlencode($uri), $link);
 202                         $webfinger = self::webfinger($path);
 203
 204                         if (!$webfinger AND (strstr($uri, "@"))) {
 205                                 $path = str_replace('{uri}', urlencode("acct:".$uri), $link);
 206                                 $webfinger = self::webfinger($path);
 207                         }
 208
 209                         // Special treatment for Mastodon
 210                         // Problem is that Mastodon uses an URL format like http://domain.tld/@nick
 211                         // But the webfinger for this format fails.
 212                         if (!$webfinger AND isset($nick)) {
 213                                 // Mastodon uses a "@" as prefix for usernames in their url format
 214                                 $nick = ltrim($nick, '@');
 215
 216                                 $addr = $nick."@".$host;
 217
 218                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 219                                 $webfinger = self::webfinger($path);
 220                         }
 221                 }
 222
 223                 if (!is_array($webfinger["links"]))
 224                         return false;
 225
 226                 $data = array();
 227
 228                 foreach ($webfinger["links"] AS $link)
 229                         $data[] = array("@attributes" => $link);
 230
 231                 if (is_array($webfinger["aliases"]))
 232                         foreach ($webfinger["aliases"] AS $alias)
 233                                 $data[] = array("@attributes" =>
 234                                                         array("rel" => "alias",
 235                                                                 "href" => $alias));
 236
 237                 return $data;
 238         }
 239
 240         /**
 241          * @brief Fetch information (protocol endpoints and user information) about a given uri
 242          *
 243          * @param string $uri Address that should be probed
 244          * @param string $network Test for this specific network
 245          * @param integer $uid User ID for the probe (only used for mails)
 246          * @param boolean $cache Use cached values?
 247          *
 248          * @return array uri data
 249          */
 250         public static function uri($uri, $network = "", $uid = 0, $cache = true) {
 251
 252                 if ($cache) {
 253                         $result = Cache::get("probe_url:".$network.":".$uri);
 254                         if (!is_null($result)) {
 255                                 return $result;
 256                         }
 257                 }
 258
 259                 if ($uid == 0)
 260                         $uid = local_user();
 261
 262                 $data = self::detect($uri, $network, $uid);
 263
 264                 if (!isset($data["url"]))
 265                         $data["url"] = $uri;
 266
 267                 if ($data["photo"] != "")
 268                         $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
 269                 else
 270                         $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
 271
 272                 if (!isset($data["name"]) OR ($data["name"] == "")) {
 273                         if (isset($data["nick"]))
 274                                 $data["name"] = $data["nick"];
 275
 276                         if ($data["name"] == "")
 277                                 $data["name"] = $data["url"];
 278                 }
 279
 280                 if (!isset($data["nick"]) OR ($data["nick"] == "")) {
 281                         $data["nick"] = strtolower($data["name"]);
 282
 283                         if (strpos($data['nick'], ' '))
 284                                 $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
 285                 }
 286
 287                 if (self::$baseurl != "") {
 288                         $data["baseurl"] = self::$baseurl;
 289                 }
 290
 291                 if (!isset($data["network"])) {
 292                         $data["network"] = NETWORK_PHANTOM;
 293                 }
 294
 295                 $data = self::rearrange_data($data);
 296
 297                 // Only store into the cache if the value seems to be valid
 298                 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
 299                         Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
 300
 301                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 302                         /// The biggest problem is the avatar picture that could have a reduced image size.
 303                         /// It should only be updated if the existing picture isn't existing anymore.
 304                         if (($data['network'] != NETWORK_FEED) AND ($mode == PROBE_NORMAL) AND
 305                                 $data["name"] AND $data["nick"] AND $data["url"] AND $data["addr"] AND $data["poll"])
 306                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 307                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 308                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 309                                         dbesc($data["name"]),
 310                                         dbesc($data["nick"]),
 311                                         dbesc($data["url"]),
 312                                         dbesc($data["addr"]),
 313                                         dbesc($data["notify"]),
 314                                         dbesc($data["poll"]),
 315                                         dbesc($data["alias"]),
 316                                         dbesc(datetime_convert()),
 317                                         dbesc(normalise_link($data['url']))
 318                         );
 319                 }
 320
 321                 return $data;
 322         }
 323
 324         /**
 325          * @brief Fetch information (protocol endpoints and user information) about a given uri
 326          *
 327          * This function is only called by the "uri" function that adds caching and rearranging of data.
 328          *
 329          * @param string $uri Address that should be probed
 330          * @param string $network Test for this specific network
 331          * @param integer $uid User ID for the probe (only used for mails)
 332          *
 333          * @return array uri data
 334          */
 335         private function detect($uri, $network, $uid) {
 336                 $parts = parse_url($uri);
 337
 338                 if (isset($parts["scheme"]) AND isset($parts["host"]) AND isset($parts["path"])) {
 339
 340                         $host = $parts["host"];
 341                         if (isset($parts["port"])) {
 342                                 $host .= ':'.$parts["port"];
 343                         }
 344
 345                         if ($host == 'twitter.com') {
 346                                 return array("network" => NETWORK_TWITTER);
 347                         }
 348                         $lrdd = self::xrd($host);
 349
 350                         $path_parts = explode("/", trim($parts["path"], "/"));
 351
 352                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 353                                 $host .= "/".array_shift($path_parts);
 354                                 $lrdd = self::xrd($host);
 355                         }
 356                         if (!$lrdd) {
 357                                 return self::feed($uri);
 358                         }
 359                         $nick = array_pop($path_parts);
 360
 361                         // Mastodon uses a "@" as prefix for usernames in their url format
 362                         $nick = ltrim($nick, '@');
 363
 364                         $addr = $nick."@".$host;
 365                 } elseif (strstr($uri, '@')) {
 366                         // If the URI starts with "mailto:" then jump directly to the mail detection
 367                         if (strpos($url,'mailto:') !== false) {
 368                                 $uri = str_replace('mailto:', '', $url);
 369                                 return self::mail($uri, $uid);
 370                         }
 371
 372                         if ($network == NETWORK_MAIL) {
 373                                 return self::mail($uri, $uid);
 374                         }
 375                         // Remove "acct:" from the URI
 376                         $uri = str_replace('acct:', '', $uri);
 377
 378                         $host = substr($uri,strpos($uri, '@') + 1);
 379                         $nick = substr($uri,0, strpos($uri, '@'));
 380
 381                         if (strpos($uri, '@twitter.com')) {
 382                                 return array("network" => NETWORK_TWITTER);
 383                         }
 384                         $lrdd = self::xrd($host);
 385
 386                         if (!$lrdd) {
 387                                 return self::mail($uri, $uid);
 388                         }
 389                         $addr = $uri;
 390                 } else {
 391                         return false;
 392                 }
 393
 394                 $webfinger = false;
 395
 396                 /// @todo Do we need the prefix "acct:" or "acct://"?
 397
 398                 foreach ($lrdd AS $key => $link) {
 399                         if ($webfinger) {
 400                                 continue;
 401                         }
 402                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 403                                 continue;
 404                         }
 405                         // At first try it with the given uri
 406                         $path = str_replace('{uri}', urlencode($uri), $link);
 407                         $webfinger = self::webfinger($path);
 408
 409                         // We cannot be sure that the detected address was correct, so we don't use the values
 410                         if ($webfinger AND ($uri != $addr)) {
 411                                 $nick = "";
 412                                 $addr = "";
 413                         }
 414
 415                         // Try webfinger with the address (user@domain.tld)
 416                         if (!$webfinger) {
 417                                 $path = str_replace('{uri}', urlencode($addr), $link);
 418                                 $webfinger = self::webfinger($path);
 419                         }
 420
 421                         // Mastodon needs to have it with "acct:"
 422                         if (!$webfinger) {
 423                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 424                                 $webfinger = self::webfinger($path);
 425                         }
 426                 }
 427                 if (!$webfinger) {
 428                         return self::feed($uri);
 429                 }
 430
 431                 $result = false;
 432
 433                 logger("Probing ".$uri, LOGGER_DEBUG);
 434
 435                 if (in_array($network, array("", NETWORK_DFRN)))
 436                         $result = self::dfrn($webfinger);
 437                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA))
 438                         $result = self::diaspora($webfinger);
 439                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS))
 440                         $result = self::ostatus($webfinger);
 441                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO))
 442                         $result = self::pumpio($webfinger);
 443                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED))
 444                         $result = self::feed($uri);
 445                 else {
 446                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 447                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 448                         if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != ""))
 449                                 $result["nick"] = $nick;
 450
 451                         if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != ""))
 452                                 $result["addr"] = $addr;
 453                 }
 454
 455                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 456
 457                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 458                         $pos = strpos($result["url"], $host);
 459                         if ($pos)
 460                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 461                 }
 462
 463                 return $result;
 464         }
 465
 466         /**
 467          * @brief Perform a webfinger request.
 468          *
 469          * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
 470          *
 471          * @param string $url Address that should be probed
 472          *
 473          * @return array webfinger data
 474          */
 475         private function webfinger($url) {
 476
 477                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
 478                 $redirects = 0;
 479
 480                 $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
 481                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 482                         return false;
 483                 }
 484                 $data = $ret['body'];
 485
 486                 $xrd = parse_xml_string($data, false);
 487
 488                 if (!is_object($xrd)) {
 489                         // If it is not XML, maybe it is JSON
 490                         $webfinger = json_decode($data, true);
 491
 492                         if (!isset($webfinger["links"]))
 493                                 return false;
 494
 495                         return $webfinger;
 496                 }
 497
 498                 $xrd_arr = xml::element_to_array($xrd);
 499                 if (!isset($xrd_arr["xrd"]["link"]))
 500                         return false;
 501
 502                 $webfinger = array();
 503
 504                 if (isset($xrd_arr["xrd"]["subject"]))
 505                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 506
 507                 if (isset($xrd_arr["xrd"]["alias"]))
 508                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 509
 510                 $webfinger["links"] = array();
 511
 512                 foreach ($xrd_arr["xrd"]["link"] AS $value => $data) {
 513                         if (isset($data["@attributes"]))
 514                                 $attributes = $data["@attributes"];
 515                         elseif ($value == "@attributes")
 516                                 $attributes = $data;
 517                         else
 518                                 continue;
 519
 520                         $webfinger["links"][] = $attributes;
 521                 }
 522                 return $webfinger;
 523         }
 524
 525         /**
 526          * @brief Poll the Friendica specific noscrape page.
 527          *
 528          * "noscrape" is a faster alternative to fetch the data from the hcard.
 529          * This functionality was originally created for the directory.
 530          *
 531          * @param string $noscrape Link to the noscrape page
 532          * @param array $data The already fetched data
 533          *
 534          * @return array noscrape data
 535          */
 536         private function poll_noscrape($noscrape, $data) {
 537                 $ret = z_fetch_url($noscrape);
 538                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 539                         return false;
 540                 }
 541                 $content = $ret['body'];
 542                 if (!$content) {
 543                         return false;
 544                 }
 545
 546                 $json = json_decode($content, true);
 547                 if (!is_array($json))
 548                         return false;
 549
 550                 if (isset($json["fn"]))
 551                         $data["name"] = $json["fn"];
 552
 553                 if (isset($json["addr"]))
 554                         $data["addr"] = $json["addr"];
 555
 556                 if (isset($json["nick"]))
 557                         $data["nick"] = $json["nick"];
 558
 559                 if (isset($json["comm"]))
 560                         $data["community"] = $json["comm"];
 561
 562                 if (isset($json["tags"])) {
 563                         $keywords = implode(" ", $json["tags"]);
 564                         if ($keywords != "")
 565                                 $data["keywords"] = $keywords;
 566                 }
 567
 568                 $location = formatted_location($json);
 569                 if ($location)
 570                         $data["location"] = $location;
 571
 572                 if (isset($json["about"]))
 573                         $data["about"] = $json["about"];
 574
 575                 if (isset($json["key"]))
 576                         $data["pubkey"] = $json["key"];
 577
 578                 if (isset($json["photo"]))
 579                         $data["photo"] = $json["photo"];
 580
 581                 if (isset($json["dfrn-request"]))
 582                         $data["request"] = $json["dfrn-request"];
 583
 584                 if (isset($json["dfrn-confirm"]))
 585                         $data["confirm"] = $json["dfrn-confirm"];
 586
 587                 if (isset($json["dfrn-notify"]))
 588                         $data["notify"] = $json["dfrn-notify"];
 589
 590                 if (isset($json["dfrn-poll"]))
 591                         $data["poll"] = $json["dfrn-poll"];
 592
 593                 return $data;
 594         }
 595
 596         /**
 597          * @brief Check for valid DFRN data
 598          *
 599          * @param array $data DFRN data
 600          *
 601          * @return int Number of errors
 602          */
 603         public static function valid_dfrn($data) {
 604                 $errors = 0;
 605                 if(!isset($data['key']))
 606                         $errors ++;
 607                 if(!isset($data['dfrn-request']))
 608                         $errors ++;
 609                 if(!isset($data['dfrn-confirm']))
 610                         $errors ++;
 611                 if(!isset($data['dfrn-notify']))
 612                         $errors ++;
 613                 if(!isset($data['dfrn-poll']))
 614                         $errors ++;
 615                 return $errors;
 616         }
 617
 618         /**
 619          * @brief Fetch data from a DFRN profile page and via "noscrape"
 620          *
 621          * @param string $profile Link to the profile page
 622          *
 623          * @return array profile data
 624          */
 625         public static function profile($profile) {
 626
 627                 $data = array();
 628
 629                 logger("Check profile ".$profile, LOGGER_DEBUG);
 630
 631                 // Fetch data via noscrape - this is faster
 632                 $noscrape = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile);
 633                 $data = self::poll_noscrape($noscrape, $data);
 634
 635                 if (!isset($data["notify"]) OR !isset($data["confirm"]) OR
 636                         !isset($data["request"]) OR !isset($data["poll"]) OR
 637                         !isset($data["poco"]) OR !isset($data["name"]) OR
 638                         !isset($data["photo"]))
 639                         $data = self::poll_hcard($profile, $data, true);
 640
 641                 $prof_data = array();
 642                 $prof_data["addr"] = $data["addr"];
 643                 $prof_data["nick"] = $data["nick"];
 644                 $prof_data["dfrn-request"] = $data["request"];
 645                 $prof_data["dfrn-confirm"] = $data["confirm"];
 646                 $prof_data["dfrn-notify"] = $data["notify"];
 647                 $prof_data["dfrn-poll"] = $data["poll"];
 648                 $prof_data["dfrn-poco"] = $data["poco"];
 649                 $prof_data["photo"] = $data["photo"];
 650                 $prof_data["fn"] = $data["name"];
 651                 $prof_data["key"] = $data["pubkey"];
 652
 653                 logger("Result for profile ".$profile.": ".print_r($prof_data, true), LOGGER_DEBUG);
 654
 655                 return $prof_data;
 656         }
 657
 658         /**
 659          * @brief Check for DFRN contact
 660          *
 661          * @param array $webfinger Webfinger data
 662          *
 663          * @return array DFRN data
 664          */
 665         private function dfrn($webfinger) {
 666
 667                 $hcard = "";
 668                 $data = array();
 669                 foreach ($webfinger["links"] AS $link) {
 670                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != ""))
 671                                 $data["network"] = NETWORK_DFRN;
 672                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 673                                 $data["poll"] = $link["href"];
 674                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 675                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 676                                 $data["url"] = $link["href"];
 677                         elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 678                                 $hcard = $link["href"];
 679                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 680                                 $data["poco"] = $link["href"];
 681                         elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != ""))
 682                                 $data["photo"] = $link["href"];
 683
 684                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 685                                 $data["baseurl"] = trim($link["href"], '/');
 686                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 687                                 $data["guid"] = $link["href"];
 688                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 689                                 $data["pubkey"] = base64_decode($link["href"]);
 690
 691                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 692                                 if (strstr($data["pubkey"], 'RSA '))
 693                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 694                         }
 695                 }
 696
 697                 if (!isset($data["network"]) OR ($hcard == ""))
 698                         return false;
 699
 700                 // Fetch data via noscrape - this is faster
 701                 $noscrape = str_replace("/hcard/", "/noscrape/", $hcard);
 702                 $data = self::poll_noscrape($noscrape, $data);
 703
 704                 if (isset($data["notify"]) AND isset($data["confirm"]) AND isset($data["request"]) AND
 705                         isset($data["poll"]) AND isset($data["name"]) AND isset($data["photo"]))
 706                         return $data;
 707
 708                 $data = self::poll_hcard($hcard, $data, true);
 709
 710                 return $data;
 711         }
 712
 713         /**
 714          * @brief Poll the hcard page (Diaspora and Friendica specific)
 715          *
 716          * @param string $hcard Link to the hcard page
 717          * @param array $data The already fetched data
 718          * @param boolean $dfrn Poll DFRN specific data
 719          *
 720          * @return array hcard data
 721          */
 722         private function poll_hcard($hcard, $data, $dfrn = false) {
 723                 $ret = z_fetch_url($hcard);
 724                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 725                         return false;
 726                 }
 727                 $content = $ret['body'];
 728                 if (!$content) {
 729                         return false;
 730                 }
 731
 732                 $doc = new DOMDocument();
 733                 if (!@$doc->loadHTML($content))
 734                         return false;
 735
 736                 $xpath = new DomXPath($doc);
 737
 738                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 739                 if (!is_object($vcards))
 740                         return false;
 741
 742                 if ($vcards->length > 0) {
 743                         $vcard = $vcards->item(0);
 744
 745                         // We have to discard the guid from the hcard in favour of the guid from lrdd
 746                         // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 747                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 748                         if (($search->length > 0) AND ($data["guid"] == ""))
 749                                 $data["guid"] = $search->item(0)->nodeValue;
 750
 751                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 752                         if ($search->length > 0)
 753                                 $data["nick"] = $search->item(0)->nodeValue;
 754
 755                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 756                         if ($search->length > 0)
 757                                 $data["name"] = $search->item(0)->nodeValue;
 758
 759                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 760                         if ($search->length > 0)
 761                                 $data["searchable"] = $search->item(0)->nodeValue;
 762
 763                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 764                         if ($search->length > 0) {
 765                                 $data["pubkey"] = $search->item(0)->nodeValue;
 766                                 if (strstr($data["pubkey"], 'RSA '))
 767                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 768                         }
 769
 770                         $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 771                         if ($search->length > 0)
 772                                 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 773                 }
 774
 775                 $avatar = array();
 776                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 777                 foreach ($photos AS $photo) {
 778                         $attr = array();
 779                         foreach ($photo->attributes as $attribute) {
 780                                 $attr[$attribute->name] = trim($attribute->value);
 781                         }
 782
 783                         if (isset($attr["src"]) AND isset($attr["width"])) {
 784                                 $avatar[$attr["width"]] = $attr["src"];
 785                         }
 786
 787                         // We don't have a width. So we just take everything that we got.
 788                         // This is a Hubzilla workaround which doesn't send a width.
 789                         if ((sizeof($avatar) == 0) AND isset($attr["src"])) {
 790                                 $avatar[] = $attr["src"];
 791                         }
 792                 }
 793
 794                 if (sizeof($avatar)) {
 795                         ksort($avatar);
 796                         $data["photo"] = self::fix_avatar(array_pop($avatar), $data["baseurl"]);
 797                 }
 798
 799                 if ($dfrn) {
 800                         // Poll DFRN specific data
 801                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 802                         if ($search->length > 0) {
 803                                 foreach ($search AS $link) {
 804                                         //$data["request"] = $search->item(0)->nodeValue;
 805                                         $attr = array();
 806                                         foreach ($link->attributes as $attribute)
 807                                                 $attr[$attribute->name] = trim($attribute->value);
 808
 809                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 810                                 }
 811                         }
 812
 813                         // Older Friendica versions had used the "uid" field differently than newer versions
 814                         if ($data["nick"] == $data["guid"])
 815                                 unset($data["guid"]);
 816                 }
 817
 818
 819                 return $data;
 820         }
 821
 822         /**
 823          * @brief Check for Diaspora contact
 824          *
 825          * @param array $webfinger Webfinger data
 826          *
 827          * @return array Diaspora data
 828          */
 829         private function diaspora($webfinger) {
 830
 831                 $hcard = "";
 832                 $data = array();
 833                 foreach ($webfinger["links"] AS $link) {
 834                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 835                                 $hcard = $link["href"];
 836                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 837                                 $data["baseurl"] = trim($link["href"], '/');
 838                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 839                                 $data["guid"] = $link["href"];
 840                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 841                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 842                                 $data["url"] = $link["href"];
 843                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 844                                 $data["poll"] = $link["href"];
 845                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 846                                 $data["poco"] = $link["href"];
 847                         elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
 848                                 $data["notify"] = $link["href"];
 849                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 850                                 $data["pubkey"] = base64_decode($link["href"]);
 851
 852                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 853                                 if (strstr($data["pubkey"], 'RSA '))
 854                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 855                         }
 856                 }
 857
 858                 if (!isset($data["url"]) OR ($hcard == ""))
 859                         return false;
 860
 861                 if (is_array($webfinger["aliases"]))
 862                         foreach ($webfinger["aliases"] AS $alias)
 863                                 if (normalise_link($alias) != normalise_link($data["url"]) AND !strstr($alias, "@"))
 864                                         $data["alias"] = $alias;
 865
 866                 // Fetch further information from the hcard
 867                 $data = self::poll_hcard($hcard, $data);
 868
 869                 if (!$data)
 870                         return false;
 871
 872                 if (isset($data["url"]) AND isset($data["guid"]) AND isset($data["baseurl"]) AND
 873                         isset($data["pubkey"]) AND ($hcard != "")) {
 874                         $data["network"] = NETWORK_DIASPORA;
 875
 876                         // The Diaspora handle must always be lowercase
 877                         $data["addr"] = strtolower($data["addr"]);
 878
 879                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 880                         $data["notify"] = $data["baseurl"]."/receive/users/".$data["guid"];
 881                         $data["batch"] = $data["baseurl"]."/receive/public";
 882                 } else
 883                         return false;
 884
 885                 return $data;
 886         }
 887
 888         /**
 889          * @brief Check for OStatus contact
 890          *
 891          * @param array $webfinger Webfinger data
 892          *
 893          * @return array OStatus data
 894          */
 895         private function ostatus($webfinger) {
 896                 $data = array();
 897                 if (is_array($webfinger["aliases"])) {
 898                         foreach ($webfinger["aliases"] AS $alias) {
 899                                 if (strstr($alias, "@")) {
 900                                         $data["addr"] = str_replace('acct:', '', $alias);
 901                                 }
 902                         }
 903                 }
 904
 905                 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
 906                         $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
 907                 }
 908                 $pubkey = "";
 909                 foreach ($webfinger["links"] AS $link) {
 910                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 911                                 ($link["type"] == "text/html") AND ($link["href"] != "")) {
 912                                 $data["url"] = $link["href"];
 913                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
 914                                 $data["notify"] = $link["href"];
 915                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 916                                 $data["poll"] = $link["href"];
 917                         } elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
 918                                 $pubkey = $link["href"];
 919
 920                                 if (substr($pubkey, 0, 5) === 'data:') {
 921                                         if (strstr($pubkey, ',')) {
 922                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
 923                                         } else {
 924                                                 $pubkey = substr($pubkey, 5);
 925                                         }
 926                                 } elseif (normalise_link($pubkey) == 'http://') {
 927                                         $ret = z_fetch_url($pubkey);
 928                                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 929                                                 return false;
 930                                         }
 931                                         $pubkey = $ret['body'];
 932                                 }
 933
 934                                 $key = explode(".", $pubkey);
 935
 936                                 if (sizeof($key) >= 3) {
 937                                         $m = base64url_decode($key[1]);
 938                                         $e = base64url_decode($key[2]);
 939                                         $data["pubkey"] = metopem($m,$e);
 940                                 }
 941                         }
 942                 }
 943
 944                 if (isset($data["notify"]) AND isset($data["pubkey"]) AND
 945                         isset($data["poll"]) AND isset($data["url"])) {
 946                         $data["network"] = NETWORK_OSTATUS;
 947                 } else {
 948                         return false;
 949                 }
 950                 // Fetch all additional data from the feed
 951                 $ret = z_fetch_url($data["poll"]);
 952                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 953                         return false;
 954                 }
 955                 $feed = $ret['body'];
 956                 $feed_data = feed_import($feed,$dummy1,$dummy2, $dummy3, true);
 957                 if (!$feed_data) {
 958                         return false;
 959                 }
 960                 if ($feed_data["header"]["author-name"] != "") {
 961                         $data["name"] = $feed_data["header"]["author-name"];
 962                 }
 963                 if ($feed_data["header"]["author-nick"] != "") {
 964                         $data["nick"] = $feed_data["header"]["author-nick"];
 965                 }
 966                 if ($feed_data["header"]["author-avatar"] != "") {
 967                         $data["photo"] = self::fix_avatar($feed_data["header"]["author-avatar"], $data["url"]);
 968                 }
 969                 if ($feed_data["header"]["author-id"] != "") {
 970                         $data["alias"] = $feed_data["header"]["author-id"];
 971                 }
 972                 if ($feed_data["header"]["author-location"] != "") {
 973                         $data["location"] = $feed_data["header"]["author-location"];
 974                 }
 975                 if ($feed_data["header"]["author-about"] != "") {
 976                         $data["about"] = $feed_data["header"]["author-about"];
 977                 }
 978                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
 979                 // So we take the value that we just fetched, although the other one worked as well
 980                 if ($feed_data["header"]["author-link"] != "") {
 981                         $data["url"] = $feed_data["header"]["author-link"];
 982                 }
 983                 /// @todo Fetch location and "about" from the feed as well
 984                 return $data;
 985         }
 986
 987         /**
 988          * @brief Fetch data from a pump.io profile page
 989          *
 990          * @param string $profile Link to the profile page
 991          *
 992          * @return array profile data
 993          */
 994         private function pumpio_profile_data($profile) {
 995
 996                 $doc = new DOMDocument();
 997                 if (!@$doc->loadHTMLFile($profile))
 998                         return false;
 999
1000                 $xpath = new DomXPath($doc);
1001
1002                 $data = array();
1003
1004                 // This is ugly - but pump.io doesn't seem to know a better way for it
1005                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
1006                 $pos = strpos($data["name"], chr(10));
1007                 if ($pos)
1008                         $data["name"] = trim(substr($data["name"], 0, $pos));
1009
1010                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
1011                 if ($avatar)
1012                         foreach ($avatar->attributes as $attribute)
1013                                 if ($attribute->name == "src")
1014                                         $data["photo"] = trim($attribute->value);
1015
1016                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
1017                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
1018
1019                 return $data;
1020         }
1021
1022         /**
1023          * @brief Check for pump.io contact
1024          *
1025          * @param array $webfinger Webfinger data
1026          *
1027          * @return array pump.io data
1028          */
1029         private function pumpio($webfinger) {
1030
1031                 $data = array();
1032                 foreach ($webfinger["links"] AS $link) {
1033                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
1034                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
1035                                 $data["url"] = $link["href"];
1036                         elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != ""))
1037                                 $data["notify"] = $link["href"];
1038                         elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != ""))
1039                                 $data["poll"] = $link["href"];
1040                         elseif (($link["rel"] == "dialback") AND ($link["href"] != ""))
1041                                 $data["dialback"] = $link["href"];
1042                 }
1043                 if (isset($data["poll"]) AND isset($data["notify"]) AND
1044                         isset($data["dialback"]) AND isset($data["url"])) {
1045
1046                         // by now we use these fields only for the network type detection
1047                         // So we unset all data that isn't used at the moment
1048                         unset($data["dialback"]);
1049
1050                         $data["network"] = NETWORK_PUMPIO;
1051                 } else
1052                         return false;
1053
1054                 $profile_data = self::pumpio_profile_data($data["url"]);
1055
1056                 if (!$profile_data)
1057                         return false;
1058
1059                 $data = array_merge($data, $profile_data);
1060
1061                 return $data;
1062         }
1063
1064         /**
1065          * @brief Check page for feed link
1066          *
1067          * @param string $url Page link
1068          *
1069          * @return string feed link
1070          */
1071         private function get_feed_link($url) {
1072                 $doc = new DOMDocument();
1073
1074                 if (!@$doc->loadHTMLFile($url))
1075                         return false;
1076
1077                 $xpath = new DomXPath($doc);
1078
1079                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
1080                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
1081                 if (!is_object($feeds))
1082                         return false;
1083
1084                 if ($feeds->length == 0)
1085                         return false;
1086
1087                 $feed_url = "";
1088
1089                 foreach ($feeds AS $feed) {
1090                         $attr = array();
1091                         foreach ($feed->attributes as $attribute)
1092                         $attr[$attribute->name] = trim($attribute->value);
1093
1094                         if ($feed_url == "")
1095                                 $feed_url = $attr["href"];
1096                 }
1097
1098                 return $feed_url;
1099         }
1100
1101         /**
1102          * @brief Check for feed contact
1103          *
1104          * @param string $url Profile link
1105          * @param boolean $probe Do a probe if the page contains a feed link
1106          *
1107          * @return array feed data
1108          */
1109         private function feed($url, $probe = true) {
1110                 $ret = z_fetch_url($url);
1111                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1112                         return false;
1113                 }
1114                 $feed = $ret['body'];
1115                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1116
1117                 if (!$feed_data) {
1118                         if (!$probe)
1119                                 return false;
1120
1121                         $feed_url = self::get_feed_link($url);
1122
1123                         if (!$feed_url)
1124                                 return false;
1125
1126                         return self::feed($feed_url, false);
1127                 }
1128
1129                 if ($feed_data["header"]["author-name"] != "")
1130                         $data["name"] = $feed_data["header"]["author-name"];
1131
1132                 if ($feed_data["header"]["author-nick"] != "")
1133                         $data["nick"] = $feed_data["header"]["author-nick"];
1134
1135                 if ($feed_data["header"]["author-avatar"] != "")
1136                         $data["photo"] = $feed_data["header"]["author-avatar"];
1137
1138                 if ($feed_data["header"]["author-id"] != "")
1139                         $data["alias"] = $feed_data["header"]["author-id"];
1140
1141                 $data["url"] = $url;
1142                 $data["poll"] = $url;
1143
1144                 if ($feed_data["header"]["author-link"] != "")
1145                         $data["baseurl"] = $feed_data["header"]["author-link"];
1146                 else
1147                         $data["baseurl"] = $data["url"];
1148
1149                 $data["network"] = NETWORK_FEED;
1150
1151                 return $data;
1152         }
1153
1154         /**
1155          * @brief Check for mail contact
1156          *
1157          * @param string $uri Profile link
1158          * @param integer $uid User ID
1159          *
1160          * @return array mail data
1161          */
1162         private function mail($uri, $uid) {
1163
1164                 if (!validate_email($uri))
1165                         return false;
1166
1167                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1168
1169                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1170
1171                 if (dbm::is_result($x) && dbm::is_result($r)) {
1172                         $mailbox = construct_mailbox_name($r[0]);
1173                         $password = '';
1174                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password,$x[0]['prvkey']);
1175                         $mbox = email_connect($mailbox,$r[0]['user'], $password);
1176                         if(!mbox)
1177                                 return false;
1178                 }
1179
1180                 $msgs = email_poll($mbox, $uri);
1181                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1182
1183                 if (!count($msgs))
1184                         return false;
1185
1186                 $data = array();
1187
1188                 $data["addr"] = $uri;
1189                 $data["network"] = NETWORK_MAIL;
1190                 $data["name"] = substr($uri, 0, strpos($uri,'@'));
1191                 $data["nick"] = $data["name"];
1192                 $data["photo"] = avatar_img($uri);
1193
1194                 $phost = substr($uri, strpos($uri,'@') + 1);
1195                 $data["url"] = 'http://'.$phost."/".$data["nick"];
1196                 $data["notify"] = 'smtp '.random_string();
1197                 $data["poll"] = 'email '.random_string();
1198
1199                 $x = email_msg_meta($mbox, $msgs[0]);
1200                 if(stristr($x[0]->from, $uri))
1201                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1202                 elseif(stristr($x[0]->to, $uri))
1203                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1204                 if(isset($adr)) {
1205                         foreach($adr as $feadr) {
1206                                 if((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1207                                         &&(strcasecmp($feadr->host, $phost) == 0)
1208                                         && (strlen($feadr->personal))) {
1209
1210                                         $personal = imap_mime_header_decode($feadr->personal);
1211                                         $data["name"] = "";
1212                                         foreach($personal as $perspart)
1213                                                 if ($perspart->charset != "default")
1214                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1215                                                 else
1216                                                         $data["name"] .= $perspart->text;
1217
1218                                         $data["name"] = notags($data["name"]);
1219                                 }
1220                         }
1221                 }
1222                 imap_close($mbox);
1223
1224                 return $data;
1225         }
1226
1227         /**
1228          * @brief Mix two paths together to possibly fix missing parts
1229          *
1230          * @param string $avatar Path to the avatar
1231          * @param string $base Another path that is hopefully complete
1232          *
1233          * @return string fixed avatar path
1234          */
1235         public static function fix_avatar($avatar, $base) {
1236                 $base_parts = parse_url($base);
1237
1238                 // Remove all parts that could create a problem
1239                 unset($base_parts['path']);
1240                 unset($base_parts['query']);
1241                 unset($base_parts['fragment']);
1242
1243                 $avatar_parts = parse_url($avatar);
1244
1245                 // Now we mix them
1246                 $parts = array_merge($base_parts, $avatar_parts);
1247
1248                 // And put them together again
1249                 $scheme   = isset($parts['scheme']) ? $parts['scheme'] . '://' : '';
1250                 $host     = isset($parts['host']) ? $parts['host'] : '';
1251                 $port     = isset($parts['port']) ? ':' . $parts['port'] : '';
1252                 $path     = isset($parts['path']) ? $parts['path'] : '';
1253                 $query    = isset($parts['query']) ? '?' . $parts['query'] : '';
1254                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
1255
1256                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
1257
1258                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
1259
1260                 return $fixed;
1261         }
1262
1263 }
1264 ?>