src/Network/Probe.php

   1 <?php
   2
   3 namespace Friendica\Network;
   4
   5 /**
   6  * @file src/Network/Probe.php
   7  * @brief Functions for probing URL
   8  *
   9  */
  10
  11 use Friendica\App;
  12 use Friendica\Core\Config;
  13 use Friendica\Core\PConfig;
  14
  15 require_once("include/feed.php");
  16 require_once('include/email.php');
  17 require_once('include/network.php');
  18
  19 /**
  20  * @brief This class contain functions for probing URL
  21  *
  22  */
  23 class Probe {
  24
  25         private static $baseurl;
  26
  27         /**
  28          * @brief Rearrange the array so that it always has the same order
  29          *
  30          * @param array $data Unordered data
  31          *
  32          * @return array Ordered data
  33          */
  34         private function rearrange_data($data) {
  35                 $fields = array("name", "nick", "guid", "url", "addr", "alias",
  36                                 "photo", "community", "keywords", "location", "about",
  37                                 "batch", "notify", "poll", "request", "confirm", "poco",
  38                                 "priority", "network", "pubkey", "baseurl");
  39
  40                 $newdata = array();
  41                 foreach ($fields AS $field)
  42                         if (isset($data[$field]))
  43                                 $newdata[$field] = $data[$field];
  44                         else
  45                                 $newdata[$field] = "";
  46
  47                 // We don't use the "priority" field anymore and replace it with a dummy.
  48                 $newdata["priority"] = 0;
  49
  50                 return $newdata;
  51         }
  52
  53         /**
  54          * @brief Probes for XRD data
  55          *
  56          * @return array
  57          *      'lrdd' => Link to LRDD endpoint
  58          *      'lrdd-xml' => Link to LRDD endpoint in XML format
  59          *      'lrdd-json' => Link to LRDD endpoint in JSON format
  60          */
  61         private function xrd($host) {
  62
  63                 // Reset the static variable
  64                 self::$baseurl = '';
  65
  66                 $ssl_url = "https://".$host."/.well-known/host-meta";
  67                 $url = "http://".$host."/.well-known/host-meta";
  68
  69                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
  70                 $redirects = 0;
  71
  72                 $ret = z_fetch_url($ssl_url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  73                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  74                         return false;
  75                 }
  76                 $xml = $ret['body'];
  77
  78                 $xrd = parse_xml_string($xml, false);
  79
  80                 if (!is_object($xrd)) {
  81                         $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  82                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  83                                 return false;
  84                         }
  85                         $xml = $ret['body'];
  86                         $xrd = parse_xml_string($xml, false);
  87                 }
  88                 if (!is_object($xrd))
  89                         return false;
  90
  91                 $links = \xml::element_to_array($xrd);
  92                 if (!isset($links["xrd"]["link"]))
  93                         return false;
  94
  95                 $xrd_data = array();
  96
  97                 foreach ($links["xrd"]["link"] AS $value => $link) {
  98                         if (isset($link["@attributes"]))
  99                                 $attributes = $link["@attributes"];
 100                         elseif ($value == "@attributes")
 101                                 $attributes = $link;
 102                         else
 103                                 continue;
 104
 105                         if (($attributes["rel"] == "lrdd") AND
 106                                 ($attributes["type"] == "application/xrd+xml"))
 107                                 $xrd_data["lrdd-xml"] = $attributes["template"];
 108                         elseif (($attributes["rel"] == "lrdd") AND
 109                                 ($attributes["type"] == "application/json"))
 110                                 $xrd_data["lrdd-json"] = $attributes["template"];
 111                         elseif ($attributes["rel"] == "lrdd")
 112                                 $xrd_data["lrdd"] = $attributes["template"];
 113                 }
 114
 115                 self::$baseurl = "http://".$host;
 116
 117                 return $xrd_data;
 118         }
 119
 120         /**
 121          * @brief Perform Webfinger lookup and return DFRN data
 122          *
 123          * Given an email style address, perform webfinger lookup and
 124          * return the resulting DFRN profile URL, or if no DFRN profile URL
 125          * is located, returns an OStatus subscription template (prefixed
 126          * with the string 'stat:' to identify it as on OStatus template).
 127          * If this isn't an email style address just return $webbie.
 128          * Return an empty string if email-style addresses but webfinger fails,
 129          * or if the resultant personal XRD doesn't contain a supported
 130          * subscription/friend-request attribute.
 131          *
 132          * amended 7/9/2011 to return an hcard which could save potentially loading
 133          * a lengthy content page to scrape dfrn attributes
 134          *
 135          * @param string $webbie Address that should be probed
 136          * @param string $hcard Link to the hcard - is returned by reference
 137          *
 138          * @return string profile link
 139          */
 140
 141         public static function webfinger_dfrn($webbie, &$hcard) {
 142
 143                 $profile_link = '';
 144
 145                 $links = self::lrdd($webbie);
 146                 logger('webfinger_dfrn: '.$webbie.':'.print_r($links,true), LOGGER_DATA);
 147                 if (count($links)) {
 148                         foreach ($links as $link) {
 149                                 if ($link['@attributes']['rel'] === NAMESPACE_DFRN)
 150                                         $profile_link = $link['@attributes']['href'];
 151                                 if (($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) AND ($profile_link == ""))
 152                                         $profile_link = 'stat:'.$link['@attributes']['template'];
 153                                 if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
 154                                         $hcard = $link['@attributes']['href'];
 155                         }
 156                 }
 157                 return $profile_link;
 158         }
 159
 160         /**
 161          * @brief Check an URI for LRDD data
 162          *
 163          * this is a replacement for the "lrdd" function in include/network.php.
 164          * It isn't used in this class and has some redundancies in the code.
 165          * When time comes we can check the existing calls for "lrdd" if we can rework them.
 166          *
 167          * @param string $uri Address that should be probed
 168          *
 169          * @return array uri data
 170          */
 171         public static function lrdd($uri) {
 172
 173                 $lrdd = self::xrd($uri);
 174
 175                 if (!$lrdd) {
 176                         $parts = @parse_url($uri);
 177                         if (!$parts)
 178                                 return array();
 179
 180                         $host = $parts["host"];
 181                         if (isset($parts["port"])) {
 182                                 $host .= ':'.$parts["port"];
 183                         }
 184
 185                         $path_parts = explode("/", trim($parts["path"], "/"));
 186
 187                         $nick = array_pop($path_parts);
 188
 189                         do {
 190                                 $lrdd = self::xrd($host);
 191                                 $host .= "/".array_shift($path_parts);
 192                         } while (!$lrdd AND (sizeof($path_parts) > 0));
 193                 }
 194
 195                 if (!$lrdd)
 196                         return array();
 197
 198                 foreach ($lrdd AS $key => $link) {
 199                         if ($webfinger)
 200                                 continue;
 201
 202                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
 203                                 continue;
 204
 205                         $path = str_replace('{uri}', urlencode($uri), $link);
 206                         $webfinger = self::webfinger($path);
 207
 208                         if (!$webfinger AND (strstr($uri, "@"))) {
 209                                 $path = str_replace('{uri}', urlencode("acct:".$uri), $link);
 210                                 $webfinger = self::webfinger($path);
 211                         }
 212
 213                         // Special treatment for Mastodon
 214                         // Problem is that Mastodon uses an URL format like http://domain.tld/@nick
 215                         // But the webfinger for this format fails.
 216                         if (!$webfinger AND isset($nick)) {
 217                                 // Mastodon uses a "@" as prefix for usernames in their url format
 218                                 $nick = ltrim($nick, '@');
 219
 220                                 $addr = $nick."@".$host;
 221
 222                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 223                                 $webfinger = self::webfinger($path);
 224                         }
 225                 }
 226
 227                 if (!is_array($webfinger["links"]))
 228                         return false;
 229
 230                 $data = array();
 231
 232                 foreach ($webfinger["links"] AS $link)
 233                         $data[] = array("@attributes" => $link);
 234
 235                 if (is_array($webfinger["aliases"]))
 236                         foreach ($webfinger["aliases"] AS $alias)
 237                                 $data[] = array("@attributes" =>
 238                                                         array("rel" => "alias",
 239                                                                 "href" => $alias));
 240
 241                 return $data;
 242         }
 243
 244         /**
 245          * @brief Fetch information (protocol endpoints and user information) about a given uri
 246          *
 247          * @param string $uri Address that should be probed
 248          * @param string $network Test for this specific network
 249          * @param integer $uid User ID for the probe (only used for mails)
 250          * @param boolean $cache Use cached values?
 251          *
 252          * @return array uri data
 253          */
 254         public static function uri($uri, $network = "", $uid = 0, $cache = true) {
 255
 256                 if ($cache) {
 257                         $result = \Cache::get("probe_url:".$network.":".$uri);
 258                         if (!is_null($result)) {
 259                                 return $result;
 260                         }
 261                 }
 262
 263                 if ($uid == 0)
 264                         $uid = local_user();
 265
 266                 $data = self::detect($uri, $network, $uid);
 267
 268                 if (!isset($data["url"]))
 269                         $data["url"] = $uri;
 270
 271                 if ($data["photo"] != "")
 272                         $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
 273                 else
 274                         $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
 275
 276                 if (!isset($data["name"]) OR ($data["name"] == "")) {
 277                         if (isset($data["nick"]))
 278                                 $data["name"] = $data["nick"];
 279
 280                         if ($data["name"] == "")
 281                                 $data["name"] = $data["url"];
 282                 }
 283
 284                 if (!isset($data["nick"]) OR ($data["nick"] == "")) {
 285                         $data["nick"] = strtolower($data["name"]);
 286
 287                         if (strpos($data['nick'], ' '))
 288                                 $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
 289                 }
 290
 291                 if (self::$baseurl != "") {
 292                         $data["baseurl"] = self::$baseurl;
 293                 }
 294
 295                 if (!isset($data["network"])) {
 296                         $data["network"] = NETWORK_PHANTOM;
 297                 }
 298
 299                 $data = self::rearrange_data($data);
 300
 301                 // Only store into the cache if the value seems to be valid
 302                 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
 303                         \Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
 304
 305                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 306                         /// The biggest problem is the avatar picture that could have a reduced image size.
 307                         /// It should only be updated if the existing picture isn't existing anymore.
 308                         if (($data['network'] != NETWORK_FEED) AND ($mode == PROBE_NORMAL) AND
 309                                 $data["name"] AND $data["nick"] AND $data["url"] AND $data["addr"] AND $data["poll"])
 310                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 311                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 312                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 313                                         dbesc($data["name"]),
 314                                         dbesc($data["nick"]),
 315                                         dbesc($data["url"]),
 316                                         dbesc($data["addr"]),
 317                                         dbesc($data["notify"]),
 318                                         dbesc($data["poll"]),
 319                                         dbesc($data["alias"]),
 320                                         dbesc(datetime_convert()),
 321                                         dbesc(normalise_link($data['url']))
 322                         );
 323                 }
 324
 325                 return $data;
 326         }
 327
 328         /**
 329          * @brief Fetch information (protocol endpoints and user information) about a given uri
 330          *
 331          * This function is only called by the "uri" function that adds caching and rearranging of data.
 332          *
 333          * @param string $uri Address that should be probed
 334          * @param string $network Test for this specific network
 335          * @param integer $uid User ID for the probe (only used for mails)
 336          *
 337          * @return array uri data
 338          */
 339         private function detect($uri, $network, $uid) {
 340                 $parts = parse_url($uri);
 341
 342                 if (isset($parts["scheme"]) AND isset($parts["host"]) AND isset($parts["path"])) {
 343
 344                         $host = $parts["host"];
 345                         if (isset($parts["port"])) {
 346                                 $host .= ':'.$parts["port"];
 347                         }
 348
 349                         if ($host == 'twitter.com') {
 350                                 return array("network" => NETWORK_TWITTER);
 351                         }
 352                         $lrdd = self::xrd($host);
 353
 354                         $path_parts = explode("/", trim($parts["path"], "/"));
 355
 356                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 357                                 $host .= "/".array_shift($path_parts);
 358                                 $lrdd = self::xrd($host);
 359                         }
 360                         if (!$lrdd) {
 361                                 return self::feed($uri);
 362                         }
 363                         $nick = array_pop($path_parts);
 364
 365                         // Mastodon uses a "@" as prefix for usernames in their url format
 366                         $nick = ltrim($nick, '@');
 367
 368                         $addr = $nick."@".$host;
 369                 } elseif (strstr($uri, '@')) {
 370                         // If the URI starts with "mailto:" then jump directly to the mail detection
 371                         if (strpos($url,'mailto:') !== false) {
 372                                 $uri = str_replace('mailto:', '', $url);
 373                                 return self::mail($uri, $uid);
 374                         }
 375
 376                         if ($network == NETWORK_MAIL) {
 377                                 return self::mail($uri, $uid);
 378                         }
 379                         // Remove "acct:" from the URI
 380                         $uri = str_replace('acct:', '', $uri);
 381
 382                         $host = substr($uri,strpos($uri, '@') + 1);
 383                         $nick = substr($uri,0, strpos($uri, '@'));
 384
 385                         if (strpos($uri, '@twitter.com')) {
 386                                 return array("network" => NETWORK_TWITTER);
 387                         }
 388                         $lrdd = self::xrd($host);
 389
 390                         if (!$lrdd) {
 391                                 return self::mail($uri, $uid);
 392                         }
 393                         $addr = $uri;
 394                 } else {
 395                         return false;
 396                 }
 397
 398                 $webfinger = false;
 399
 400                 /// @todo Do we need the prefix "acct:" or "acct://"?
 401
 402                 foreach ($lrdd AS $key => $link) {
 403                         if ($webfinger) {
 404                                 continue;
 405                         }
 406                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 407                                 continue;
 408                         }
 409                         // At first try it with the given uri
 410                         $path = str_replace('{uri}', urlencode($uri), $link);
 411                         $webfinger = self::webfinger($path);
 412
 413                         // We cannot be sure that the detected address was correct, so we don't use the values
 414                         if ($webfinger AND ($uri != $addr)) {
 415                                 $nick = "";
 416                                 $addr = "";
 417                         }
 418
 419                         // Try webfinger with the address (user@domain.tld)
 420                         if (!$webfinger) {
 421                                 $path = str_replace('{uri}', urlencode($addr), $link);
 422                                 $webfinger = self::webfinger($path);
 423                         }
 424
 425                         // Mastodon needs to have it with "acct:"
 426                         if (!$webfinger) {
 427                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 428                                 $webfinger = self::webfinger($path);
 429                         }
 430                 }
 431                 if (!$webfinger) {
 432                         return self::feed($uri);
 433                 }
 434
 435                 $result = false;
 436
 437                 logger("Probing ".$uri, LOGGER_DEBUG);
 438
 439                 if (in_array($network, array("", NETWORK_DFRN)))
 440                         $result = self::dfrn($webfinger);
 441                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA))
 442                         $result = self::diaspora($webfinger);
 443                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS))
 444                         $result = self::ostatus($webfinger);
 445                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO))
 446                         $result = self::pumpio($webfinger);
 447                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED))
 448                         $result = self::feed($uri);
 449                 else {
 450                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 451                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 452                         if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != ""))
 453                                 $result["nick"] = $nick;
 454
 455                         if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != ""))
 456                                 $result["addr"] = $addr;
 457                 }
 458
 459                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 460
 461                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 462                         $pos = strpos($result["url"], $host);
 463                         if ($pos)
 464                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 465                 }
 466
 467                 return $result;
 468         }
 469
 470         /**
 471          * @brief Perform a webfinger request.
 472          *
 473          * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
 474          *
 475          * @param string $url Address that should be probed
 476          *
 477          * @return array webfinger data
 478          */
 479         private function webfinger($url) {
 480
 481                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
 482                 $redirects = 0;
 483
 484                 $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
 485                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 486                         return false;
 487                 }
 488                 $data = $ret['body'];
 489
 490                 $xrd = parse_xml_string($data, false);
 491
 492                 if (!is_object($xrd)) {
 493                         // If it is not XML, maybe it is JSON
 494                         $webfinger = json_decode($data, true);
 495
 496                         if (!isset($webfinger["links"]))
 497                                 return false;
 498
 499                         return $webfinger;
 500                 }
 501
 502                 $xrd_arr = \xml::element_to_array($xrd);
 503                 if (!isset($xrd_arr["xrd"]["link"]))
 504                         return false;
 505
 506                 $webfinger = array();
 507
 508                 if (isset($xrd_arr["xrd"]["subject"]))
 509                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 510
 511                 if (isset($xrd_arr["xrd"]["alias"]))
 512                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 513
 514                 $webfinger["links"] = array();
 515
 516                 foreach ($xrd_arr["xrd"]["link"] AS $value => $data) {
 517                         if (isset($data["@attributes"]))
 518                                 $attributes = $data["@attributes"];
 519                         elseif ($value == "@attributes")
 520                                 $attributes = $data;
 521                         else
 522                                 continue;
 523
 524                         $webfinger["links"][] = $attributes;
 525                 }
 526                 return $webfinger;
 527         }
 528
 529         /**
 530          * @brief Poll the Friendica specific noscrape page.
 531          *
 532          * "noscrape" is a faster alternative to fetch the data from the hcard.
 533          * This functionality was originally created for the directory.
 534          *
 535          * @param string $noscrape Link to the noscrape page
 536          * @param array $data The already fetched data
 537          *
 538          * @return array noscrape data
 539          */
 540         private function poll_noscrape($noscrape, $data) {
 541                 $ret = z_fetch_url($noscrape);
 542                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 543                         return false;
 544                 }
 545                 $content = $ret['body'];
 546                 if (!$content) {
 547                         return false;
 548                 }
 549
 550                 $json = json_decode($content, true);
 551                 if (!is_array($json))
 552                         return false;
 553
 554                 if (isset($json["fn"]))
 555                         $data["name"] = $json["fn"];
 556
 557                 if (isset($json["addr"]))
 558                         $data["addr"] = $json["addr"];
 559
 560                 if (isset($json["nick"]))
 561                         $data["nick"] = $json["nick"];
 562
 563                 if (isset($json["comm"]))
 564                         $data["community"] = $json["comm"];
 565
 566                 if (isset($json["tags"])) {
 567                         $keywords = implode(" ", $json["tags"]);
 568                         if ($keywords != "")
 569                                 $data["keywords"] = $keywords;
 570                 }
 571
 572                 $location = formatted_location($json);
 573                 if ($location)
 574                         $data["location"] = $location;
 575
 576                 if (isset($json["about"]))
 577                         $data["about"] = $json["about"];
 578
 579                 if (isset($json["key"]))
 580                         $data["pubkey"] = $json["key"];
 581
 582                 if (isset($json["photo"]))
 583                         $data["photo"] = $json["photo"];
 584
 585                 if (isset($json["dfrn-request"]))
 586                         $data["request"] = $json["dfrn-request"];
 587
 588                 if (isset($json["dfrn-confirm"]))
 589                         $data["confirm"] = $json["dfrn-confirm"];
 590
 591                 if (isset($json["dfrn-notify"]))
 592                         $data["notify"] = $json["dfrn-notify"];
 593
 594                 if (isset($json["dfrn-poll"]))
 595                         $data["poll"] = $json["dfrn-poll"];
 596
 597                 return $data;
 598         }
 599
 600         /**
 601          * @brief Check for valid DFRN data
 602          *
 603          * @param array $data DFRN data
 604          *
 605          * @return int Number of errors
 606          */
 607         public static function valid_dfrn($data) {
 608                 $errors = 0;
 609                 if(!isset($data['key']))
 610                         $errors ++;
 611                 if(!isset($data['dfrn-request']))
 612                         $errors ++;
 613                 if(!isset($data['dfrn-confirm']))
 614                         $errors ++;
 615                 if(!isset($data['dfrn-notify']))
 616                         $errors ++;
 617                 if(!isset($data['dfrn-poll']))
 618                         $errors ++;
 619                 return $errors;
 620         }
 621
 622         /**
 623          * @brief Fetch data from a DFRN profile page and via "noscrape"
 624          *
 625          * @param string $profile Link to the profile page
 626          *
 627          * @return array profile data
 628          */
 629         public static function profile($profile) {
 630
 631                 $data = array();
 632
 633                 logger("Check profile ".$profile, LOGGER_DEBUG);
 634
 635                 // Fetch data via noscrape - this is faster
 636                 $noscrape = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile);
 637                 $data = self::poll_noscrape($noscrape, $data);
 638
 639                 if (!isset($data["notify"]) OR !isset($data["confirm"]) OR
 640                         !isset($data["request"]) OR !isset($data["poll"]) OR
 641                         !isset($data["poco"]) OR !isset($data["name"]) OR
 642                         !isset($data["photo"]))
 643                         $data = self::poll_hcard($profile, $data, true);
 644
 645                 $prof_data = array();
 646                 $prof_data["addr"] = $data["addr"];
 647                 $prof_data["nick"] = $data["nick"];
 648                 $prof_data["dfrn-request"] = $data["request"];
 649                 $prof_data["dfrn-confirm"] = $data["confirm"];
 650                 $prof_data["dfrn-notify"] = $data["notify"];
 651                 $prof_data["dfrn-poll"] = $data["poll"];
 652                 $prof_data["dfrn-poco"] = $data["poco"];
 653                 $prof_data["photo"] = $data["photo"];
 654                 $prof_data["fn"] = $data["name"];
 655                 $prof_data["key"] = $data["pubkey"];
 656
 657                 logger("Result for profile ".$profile.": ".print_r($prof_data, true), LOGGER_DEBUG);
 658
 659                 return $prof_data;
 660         }
 661
 662         /**
 663          * @brief Check for DFRN contact
 664          *
 665          * @param array $webfinger Webfinger data
 666          *
 667          * @return array DFRN data
 668          */
 669         private function dfrn($webfinger) {
 670
 671                 $hcard = "";
 672                 $data = array();
 673                 foreach ($webfinger["links"] AS $link) {
 674                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != ""))
 675                                 $data["network"] = NETWORK_DFRN;
 676                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 677                                 $data["poll"] = $link["href"];
 678                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 679                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 680                                 $data["url"] = $link["href"];
 681                         elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 682                                 $hcard = $link["href"];
 683                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 684                                 $data["poco"] = $link["href"];
 685                         elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != ""))
 686                                 $data["photo"] = $link["href"];
 687
 688                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 689                                 $data["baseurl"] = trim($link["href"], '/');
 690                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 691                                 $data["guid"] = $link["href"];
 692                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 693                                 $data["pubkey"] = base64_decode($link["href"]);
 694
 695                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 696                                 if (strstr($data["pubkey"], 'RSA '))
 697                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 698                         }
 699                 }
 700
 701                 if (!isset($data["network"]) OR ($hcard == ""))
 702                         return false;
 703
 704                 // Fetch data via noscrape - this is faster
 705                 $noscrape = str_replace("/hcard/", "/noscrape/", $hcard);
 706                 $data = self::poll_noscrape($noscrape, $data);
 707
 708                 if (isset($data["notify"]) AND isset($data["confirm"]) AND isset($data["request"]) AND
 709                         isset($data["poll"]) AND isset($data["name"]) AND isset($data["photo"]))
 710                         return $data;
 711
 712                 $data = self::poll_hcard($hcard, $data, true);
 713
 714                 return $data;
 715         }
 716
 717         /**
 718          * @brief Poll the hcard page (Diaspora and Friendica specific)
 719          *
 720          * @param string $hcard Link to the hcard page
 721          * @param array $data The already fetched data
 722          * @param boolean $dfrn Poll DFRN specific data
 723          *
 724          * @return array hcard data
 725          */
 726         private function poll_hcard($hcard, $data, $dfrn = false) {
 727                 $ret = z_fetch_url($hcard);
 728                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 729                         return false;
 730                 }
 731                 $content = $ret['body'];
 732                 if (!$content) {
 733                         return false;
 734                 }
 735
 736                 $doc = new DOMDocument();
 737                 if (!@$doc->loadHTML($content))
 738                         return false;
 739
 740                 $xpath = new DomXPath($doc);
 741
 742                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 743                 if (!is_object($vcards))
 744                         return false;
 745
 746                 if ($vcards->length > 0) {
 747                         $vcard = $vcards->item(0);
 748
 749                         // We have to discard the guid from the hcard in favour of the guid from lrdd
 750                         // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 751                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 752                         if (($search->length > 0) AND ($data["guid"] == ""))
 753                                 $data["guid"] = $search->item(0)->nodeValue;
 754
 755                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 756                         if ($search->length > 0)
 757                                 $data["nick"] = $search->item(0)->nodeValue;
 758
 759                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 760                         if ($search->length > 0)
 761                                 $data["name"] = $search->item(0)->nodeValue;
 762
 763                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 764                         if ($search->length > 0)
 765                                 $data["searchable"] = $search->item(0)->nodeValue;
 766
 767                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 768                         if ($search->length > 0) {
 769                                 $data["pubkey"] = $search->item(0)->nodeValue;
 770                                 if (strstr($data["pubkey"], 'RSA '))
 771                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 772                         }
 773
 774                         $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 775                         if ($search->length > 0)
 776                                 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 777                 }
 778
 779                 $avatar = array();
 780                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 781                 foreach ($photos AS $photo) {
 782                         $attr = array();
 783                         foreach ($photo->attributes as $attribute) {
 784                                 $attr[$attribute->name] = trim($attribute->value);
 785                         }
 786
 787                         if (isset($attr["src"]) AND isset($attr["width"])) {
 788                                 $avatar[$attr["width"]] = $attr["src"];
 789                         }
 790
 791                         // We don't have a width. So we just take everything that we got.
 792                         // This is a Hubzilla workaround which doesn't send a width.
 793                         if ((sizeof($avatar) == 0) AND isset($attr["src"])) {
 794                                 $avatar[] = $attr["src"];
 795                         }
 796                 }
 797
 798                 if (sizeof($avatar)) {
 799                         ksort($avatar);
 800                         $data["photo"] = self::fix_avatar(array_pop($avatar), $data["baseurl"]);
 801                 }
 802
 803                 if ($dfrn) {
 804                         // Poll DFRN specific data
 805                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 806                         if ($search->length > 0) {
 807                                 foreach ($search AS $link) {
 808                                         //$data["request"] = $search->item(0)->nodeValue;
 809                                         $attr = array();
 810                                         foreach ($link->attributes as $attribute)
 811                                                 $attr[$attribute->name] = trim($attribute->value);
 812
 813                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 814                                 }
 815                         }
 816
 817                         // Older Friendica versions had used the "uid" field differently than newer versions
 818                         if ($data["nick"] == $data["guid"])
 819                                 unset($data["guid"]);
 820                 }
 821
 822
 823                 return $data;
 824         }
 825
 826         /**
 827          * @brief Check for Diaspora contact
 828          *
 829          * @param array $webfinger Webfinger data
 830          *
 831          * @return array Diaspora data
 832          */
 833         private function diaspora($webfinger) {
 834
 835                 $hcard = "";
 836                 $data = array();
 837                 foreach ($webfinger["links"] AS $link) {
 838                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 839                                 $hcard = $link["href"];
 840                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 841                                 $data["baseurl"] = trim($link["href"], '/');
 842                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 843                                 $data["guid"] = $link["href"];
 844                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 845                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 846                                 $data["url"] = $link["href"];
 847                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 848                                 $data["poll"] = $link["href"];
 849                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 850                                 $data["poco"] = $link["href"];
 851                         elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
 852                                 $data["notify"] = $link["href"];
 853                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 854                                 $data["pubkey"] = base64_decode($link["href"]);
 855
 856                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 857                                 if (strstr($data["pubkey"], 'RSA '))
 858                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 859                         }
 860                 }
 861
 862                 if (!isset($data["url"]) OR ($hcard == ""))
 863                         return false;
 864
 865                 if (is_array($webfinger["aliases"]))
 866                         foreach ($webfinger["aliases"] AS $alias)
 867                                 if (normalise_link($alias) != normalise_link($data["url"]) AND !strstr($alias, "@"))
 868                                         $data["alias"] = $alias;
 869
 870                 // Fetch further information from the hcard
 871                 $data = self::poll_hcard($hcard, $data);
 872
 873                 if (!$data)
 874                         return false;
 875
 876                 if (isset($data["url"]) AND isset($data["guid"]) AND isset($data["baseurl"]) AND
 877                         isset($data["pubkey"]) AND ($hcard != "")) {
 878                         $data["network"] = NETWORK_DIASPORA;
 879
 880                         // The Diaspora handle must always be lowercase
 881                         $data["addr"] = strtolower($data["addr"]);
 882
 883                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 884                         $data["notify"] = $data["baseurl"]."/receive/users/".$data["guid"];
 885                         $data["batch"] = $data["baseurl"]."/receive/public";
 886                 } else
 887                         return false;
 888
 889                 return $data;
 890         }
 891
 892         /**
 893          * @brief Check for OStatus contact
 894          *
 895          * @param array $webfinger Webfinger data
 896          *
 897          * @return array OStatus data
 898          */
 899         private function ostatus($webfinger) {
 900                 $data = array();
 901                 if (is_array($webfinger["aliases"])) {
 902                         foreach ($webfinger["aliases"] AS $alias) {
 903                                 if (strstr($alias, "@")) {
 904                                         $data["addr"] = str_replace('acct:', '', $alias);
 905                                 }
 906                         }
 907                 }
 908
 909                 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
 910                         $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
 911                 }
 912                 $pubkey = "";
 913                 foreach ($webfinger["links"] AS $link) {
 914                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 915                                 ($link["type"] == "text/html") AND ($link["href"] != "")) {
 916                                 $data["url"] = $link["href"];
 917                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
 918                                 $data["notify"] = $link["href"];
 919                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 920                                 $data["poll"] = $link["href"];
 921                         } elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
 922                                 $pubkey = $link["href"];
 923
 924                                 if (substr($pubkey, 0, 5) === 'data:') {
 925                                         if (strstr($pubkey, ',')) {
 926                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
 927                                         } else {
 928                                                 $pubkey = substr($pubkey, 5);
 929                                         }
 930                                 } elseif (normalise_link($pubkey) == 'http://') {
 931                                         $ret = z_fetch_url($pubkey);
 932                                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 933                                                 return false;
 934                                         }
 935                                         $pubkey = $ret['body'];
 936                                 }
 937
 938                                 $key = explode(".", $pubkey);
 939
 940                                 if (sizeof($key) >= 3) {
 941                                         $m = base64url_decode($key[1]);
 942                                         $e = base64url_decode($key[2]);
 943                                         $data["pubkey"] = metopem($m,$e);
 944                                 }
 945                         }
 946                 }
 947
 948                 if (isset($data["notify"]) AND isset($data["pubkey"]) AND
 949                         isset($data["poll"]) AND isset($data["url"])) {
 950                         $data["network"] = NETWORK_OSTATUS;
 951                 } else {
 952                         return false;
 953                 }
 954                 // Fetch all additional data from the feed
 955                 $ret = z_fetch_url($data["poll"]);
 956                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 957                         return false;
 958                 }
 959                 $feed = $ret['body'];
 960                 $feed_data = feed_import($feed,$dummy1,$dummy2, $dummy3, true);
 961                 if (!$feed_data) {
 962                         return false;
 963                 }
 964                 if ($feed_data["header"]["author-name"] != "") {
 965                         $data["name"] = $feed_data["header"]["author-name"];
 966                 }
 967                 if ($feed_data["header"]["author-nick"] != "") {
 968                         $data["nick"] = $feed_data["header"]["author-nick"];
 969                 }
 970                 if ($feed_data["header"]["author-avatar"] != "") {
 971                         $data["photo"] = self::fix_avatar($feed_data["header"]["author-avatar"], $data["url"]);
 972                 }
 973                 if ($feed_data["header"]["author-id"] != "") {
 974                         $data["alias"] = $feed_data["header"]["author-id"];
 975                 }
 976                 if ($feed_data["header"]["author-location"] != "") {
 977                         $data["location"] = $feed_data["header"]["author-location"];
 978                 }
 979                 if ($feed_data["header"]["author-about"] != "") {
 980                         $data["about"] = $feed_data["header"]["author-about"];
 981                 }
 982                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
 983                 // So we take the value that we just fetched, although the other one worked as well
 984                 if ($feed_data["header"]["author-link"] != "") {
 985                         $data["url"] = $feed_data["header"]["author-link"];
 986                 }
 987                 /// @todo Fetch location and "about" from the feed as well
 988                 return $data;
 989         }
 990
 991         /**
 992          * @brief Fetch data from a pump.io profile page
 993          *
 994          * @param string $profile Link to the profile page
 995          *
 996          * @return array profile data
 997          */
 998         private function pumpio_profile_data($profile) {
 999
1000                 $doc = new DOMDocument();
1001                 if (!@$doc->loadHTMLFile($profile))
1002                         return false;
1003
1004                 $xpath = new DomXPath($doc);
1005
1006                 $data = array();
1007
1008                 // This is ugly - but pump.io doesn't seem to know a better way for it
1009                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
1010                 $pos = strpos($data["name"], chr(10));
1011                 if ($pos)
1012                         $data["name"] = trim(substr($data["name"], 0, $pos));
1013
1014                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
1015                 if ($avatar)
1016                         foreach ($avatar->attributes as $attribute)
1017                                 if ($attribute->name == "src")
1018                                         $data["photo"] = trim($attribute->value);
1019
1020                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
1021                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
1022
1023                 return $data;
1024         }
1025
1026         /**
1027          * @brief Check for pump.io contact
1028          *
1029          * @param array $webfinger Webfinger data
1030          *
1031          * @return array pump.io data
1032          */
1033         private function pumpio($webfinger) {
1034
1035                 $data = array();
1036                 foreach ($webfinger["links"] AS $link) {
1037                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
1038                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
1039                                 $data["url"] = $link["href"];
1040                         elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != ""))
1041                                 $data["notify"] = $link["href"];
1042                         elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != ""))
1043                                 $data["poll"] = $link["href"];
1044                         elseif (($link["rel"] == "dialback") AND ($link["href"] != ""))
1045                                 $data["dialback"] = $link["href"];
1046                 }
1047                 if (isset($data["poll"]) AND isset($data["notify"]) AND
1048                         isset($data["dialback"]) AND isset($data["url"])) {
1049
1050                         // by now we use these fields only for the network type detection
1051                         // So we unset all data that isn't used at the moment
1052                         unset($data["dialback"]);
1053
1054                         $data["network"] = NETWORK_PUMPIO;
1055                 } else
1056                         return false;
1057
1058                 $profile_data = self::pumpio_profile_data($data["url"]);
1059
1060                 if (!$profile_data)
1061                         return false;
1062
1063                 $data = array_merge($data, $profile_data);
1064
1065                 return $data;
1066         }
1067
1068         /**
1069          * @brief Check page for feed link
1070          *
1071          * @param string $url Page link
1072          *
1073          * @return string feed link
1074          */
1075         private function get_feed_link($url) {
1076                 $doc = new DOMDocument();
1077
1078                 if (!@$doc->loadHTMLFile($url))
1079                         return false;
1080
1081                 $xpath = new DomXPath($doc);
1082
1083                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
1084                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
1085                 if (!is_object($feeds))
1086                         return false;
1087
1088                 if ($feeds->length == 0)
1089                         return false;
1090
1091                 $feed_url = "";
1092
1093                 foreach ($feeds AS $feed) {
1094                         $attr = array();
1095                         foreach ($feed->attributes as $attribute)
1096                         $attr[$attribute->name] = trim($attribute->value);
1097
1098                         if ($feed_url == "")
1099                                 $feed_url = $attr["href"];
1100                 }
1101
1102                 return $feed_url;
1103         }
1104
1105         /**
1106          * @brief Check for feed contact
1107          *
1108          * @param string $url Profile link
1109          * @param boolean $probe Do a probe if the page contains a feed link
1110          *
1111          * @return array feed data
1112          */
1113         private function feed($url, $probe = true) {
1114                 $ret = z_fetch_url($url);
1115                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1116                         return false;
1117                 }
1118                 $feed = $ret['body'];
1119                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1120
1121                 if (!$feed_data) {
1122                         if (!$probe)
1123                                 return false;
1124
1125                         $feed_url = self::get_feed_link($url);
1126
1127                         if (!$feed_url)
1128                                 return false;
1129
1130                         return self::feed($feed_url, false);
1131                 }
1132
1133                 if ($feed_data["header"]["author-name"] != "")
1134                         $data["name"] = $feed_data["header"]["author-name"];
1135
1136                 if ($feed_data["header"]["author-nick"] != "")
1137                         $data["nick"] = $feed_data["header"]["author-nick"];
1138
1139                 if ($feed_data["header"]["author-avatar"] != "")
1140                         $data["photo"] = $feed_data["header"]["author-avatar"];
1141
1142                 if ($feed_data["header"]["author-id"] != "")
1143                         $data["alias"] = $feed_data["header"]["author-id"];
1144
1145                 $data["url"] = $url;
1146                 $data["poll"] = $url;
1147
1148                 if ($feed_data["header"]["author-link"] != "")
1149                         $data["baseurl"] = $feed_data["header"]["author-link"];
1150                 else
1151                         $data["baseurl"] = $data["url"];
1152
1153                 $data["network"] = NETWORK_FEED;
1154
1155                 return $data;
1156         }
1157
1158         /**
1159          * @brief Check for mail contact
1160          *
1161          * @param string $uri Profile link
1162          * @param integer $uid User ID
1163          *
1164          * @return array mail data
1165          */
1166         private function mail($uri, $uid) {
1167
1168                 if (!validate_email($uri))
1169                         return false;
1170
1171                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1172
1173                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1174
1175                 if (\dbm::is_result($x) && \dbm::is_result($r)) {
1176                         $mailbox = construct_mailbox_name($r[0]);
1177                         $password = '';
1178                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password,$x[0]['prvkey']);
1179                         $mbox = email_connect($mailbox,$r[0]['user'], $password);
1180                         if(!mbox)
1181                                 return false;
1182                 }
1183
1184                 $msgs = email_poll($mbox, $uri);
1185                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1186
1187                 if (!count($msgs))
1188                         return false;
1189
1190                 $data = array();
1191
1192                 $data["addr"] = $uri;
1193                 $data["network"] = NETWORK_MAIL;
1194                 $data["name"] = substr($uri, 0, strpos($uri,'@'));
1195                 $data["nick"] = $data["name"];
1196                 $data["photo"] = avatar_img($uri);
1197
1198                 $phost = substr($uri, strpos($uri,'@') + 1);
1199                 $data["url"] = 'http://'.$phost."/".$data["nick"];
1200                 $data["notify"] = 'smtp '.random_string();
1201                 $data["poll"] = 'email '.random_string();
1202
1203                 $x = email_msg_meta($mbox, $msgs[0]);
1204                 if(stristr($x[0]->from, $uri))
1205                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1206                 elseif(stristr($x[0]->to, $uri))
1207                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1208                 if(isset($adr)) {
1209                         foreach($adr as $feadr) {
1210                                 if((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1211                                         &&(strcasecmp($feadr->host, $phost) == 0)
1212                                         && (strlen($feadr->personal))) {
1213
1214                                         $personal = imap_mime_header_decode($feadr->personal);
1215                                         $data["name"] = "";
1216                                         foreach($personal as $perspart)
1217                                                 if ($perspart->charset != "default")
1218                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1219                                                 else
1220                                                         $data["name"] .= $perspart->text;
1221
1222                                         $data["name"] = notags($data["name"]);
1223                                 }
1224                         }
1225                 }
1226                 imap_close($mbox);
1227
1228                 return $data;
1229         }
1230
1231         /**
1232          * @brief Mix two paths together to possibly fix missing parts
1233          *
1234          * @param string $avatar Path to the avatar
1235          * @param string $base Another path that is hopefully complete
1236          *
1237          * @return string fixed avatar path
1238          */
1239         public static function fix_avatar($avatar, $base) {
1240                 $base_parts = parse_url($base);
1241
1242                 // Remove all parts that could create a problem
1243                 unset($base_parts['path']);
1244                 unset($base_parts['query']);
1245                 unset($base_parts['fragment']);
1246
1247                 $avatar_parts = parse_url($avatar);
1248
1249                 // Now we mix them
1250                 $parts = array_merge($base_parts, $avatar_parts);
1251
1252                 // And put them together again
1253                 $scheme   = isset($parts['scheme']) ? $parts['scheme'] . '://' : '';
1254                 $host     = isset($parts['host']) ? $parts['host'] : '';
1255                 $port     = isset($parts['port']) ? ':' . $parts['port'] : '';
1256                 $path     = isset($parts['path']) ? $parts['path'] : '';
1257                 $query    = isset($parts['query']) ? '?' . $parts['query'] : '';
1258                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
1259
1260                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
1261
1262                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
1263
1264                 return $fixed;
1265         }
1266
1267 }