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
  14 require_once 'include/feed.php';
  15 require_once 'include/email.php';
  16 require_once 'include/network.php';
  17
  18 /**
  19  * @brief This class contain functions for probing URL
  20  *
  21  */
  22 class Probe {
  23
  24         private static $baseurl;
  25
  26         /**
  27          * @brief Rearrange the array so that it always has the same order
  28          *
  29          * @param array $data Unordered data
  30          *
  31          * @return array Ordered data
  32          */
  33         private function rearrangeData($data) {
  34                 $fields = array("name", "nick", "guid", "url", "addr", "alias",
  35                                 "photo", "community", "keywords", "location", "about",
  36                                 "batch", "notify", "poll", "request", "confirm", "poco",
  37                                 "priority", "network", "pubkey", "baseurl");
  38
  39                 $newdata = array();
  40                 foreach ($fields as $field) {
  41                         if (isset($data[$field])) {
  42                                 $newdata[$field] = $data[$field];
  43                         } else {
  44                                 $newdata[$field] = "";
  45                         }
  46                 }
  47
  48                 // We don't use the "priority" field anymore and replace it with a dummy.
  49                 $newdata["priority"] = 0;
  50
  51                 return $newdata;
  52         }
  53
  54         /**
  55          * @brief Probes for XRD data
  56          *
  57          * @param string $host The host part of an url
  58          *
  59          * @return array
  60          *      'lrdd' => Link to LRDD endpoint
  61          *      'lrdd-xml' => Link to LRDD endpoint in XML format
  62          *      'lrdd-json' => Link to LRDD endpoint in JSON format
  63          */
  64         private function xrd($host) {
  65
  66                 // Reset the static variable
  67                 self::$baseurl = '';
  68
  69                 $ssl_url = "https://".$host."/.well-known/host-meta";
  70                 $url = "http://".$host."/.well-known/host-meta";
  71
  72                 $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
  73                 $redirects = 0;
  74
  75                 $ret = z_fetch_url($ssl_url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  76                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  77                         return false;
  78                 }
  79                 $xml = $ret['body'];
  80
  81                 $xrd = parse_xml_string($xml, false);
  82
  83                 if (!is_object($xrd)) {
  84                         $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  85                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  86                                 return false;
  87                         }
  88                         $xml = $ret['body'];
  89                         $xrd = parse_xml_string($xml, false);
  90                 }
  91                 if (!is_object($xrd)) {
  92                         return false;
  93                 }
  94
  95                 $links = \xml::element_to_array($xrd);
  96                 if (!isset($links["xrd"]["link"])) {
  97                         return false;
  98                 }
  99
 100                 $xrd_data = array();
 101
 102                 foreach ($links["xrd"]["link"] as $value => $link) {
 103                         if (isset($link["@attributes"])) {
 104                                 $attributes = $link["@attributes"];
 105                         } elseif ($value == "@attributes") {
 106                                 $attributes = $link;
 107                         } else {
 108                                 continue;
 109                         }
 110
 111                         if (($attributes["rel"] == "lrdd")
 112                                 AND ($attributes["type"] == "application/xrd+xml")
 113                         ) {
 114                                 $xrd_data["lrdd-xml"] = $attributes["template"];
 115                         } elseif (($attributes["rel"] == "lrdd")
 116                                 AND ($attributes["type"] == "application/json")
 117                         ) {
 118                                 $xrd_data["lrdd-json"] = $attributes["template"];
 119                         } elseif ($attributes["rel"] == "lrdd") {
 120                                 $xrd_data["lrdd"] = $attributes["template"];
 121                         }
 122                 }
 123
 124                 self::$baseurl = "http://".$host;
 125
 126                 return $xrd_data;
 127         }
 128
 129         /**
 130          * @brief Perform Webfinger lookup and return DFRN data
 131          *
 132          * Given an email style address, perform webfinger lookup and
 133          * return the resulting DFRN profile URL, or if no DFRN profile URL
 134          * is located, returns an OStatus subscription template (prefixed
 135          * with the string 'stat:' to identify it as on OStatus template).
 136          * If this isn't an email style address just return $webbie.
 137          * Return an empty string if email-style addresses but webfinger fails,
 138          * or if the resultant personal XRD doesn't contain a supported
 139          * subscription/friend-request attribute.
 140          *
 141          * amended 7/9/2011 to return an hcard which could save potentially loading
 142          * a lengthy content page to scrape dfrn attributes
 143          *
 144          * @param string $webbie Address that should be probed
 145          * @param string $hcard_url Link to the hcard - is returned by reference
 146          *
 147          * @return string profile link
 148          */
 149
 150         public static function webfingerDfrn($webbie, &$hcard_url) {
 151
 152                 $profile_link = '';
 153
 154                 $links = self::lrdd($webbie);
 155                 logger('webfingerDfrn: '.$webbie.':'.print_r($links, true), LOGGER_DATA);
 156                 if (count($links)) {
 157                         foreach ($links as $link) {
 158                                 if ($link['@attributes']['rel'] === NAMESPACE_DFRN) {
 159                                         $profile_link = $link['@attributes']['href'];
 160                                 }
 161                                 if (($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) AND ($profile_link == "")) {
 162                                         $profile_link = 'stat:'.$link['@attributes']['template'];
 163                                 }
 164                                 if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard') {
 165                                         $hcard_url = $link['@attributes']['href'];
 166                                 }
 167                         }
 168                 }
 169                 return $profile_link;
 170         }
 171
 172         /**
 173          * @brief Check an URI for LRDD data
 174          *
 175          * this is a replacement for the "lrdd" function in include/network.php.
 176          * It isn't used in this class and has some redundancies in the code.
 177          * When time comes we can check the existing calls for "lrdd" if we can rework them.
 178          *
 179          * @param string $uri Address that should be probed
 180          *
 181          * @return array uri data
 182          */
 183         public static function lrdd($uri) {
 184
 185                 $lrdd = self::xrd($uri);
 186                 $webfinger = null;
 187
 188                 if (!$lrdd) {
 189                         $parts = @parse_url($uri);
 190                         if (!$parts) {
 191                                 return array();
 192                         }
 193
 194                         $host = $parts["host"];
 195                         if (isset($parts["port"])) {
 196                                 $host .= ':'.$parts["port"];
 197                         }
 198
 199                         $path_parts = explode("/", trim($parts["path"], "/"));
 200
 201                         $nick = array_pop($path_parts);
 202
 203                         do {
 204                                 $lrdd = self::xrd($host);
 205                                 $host .= "/".array_shift($path_parts);
 206                         } while (!$lrdd AND (sizeof($path_parts) > 0));
 207                 }
 208
 209                 if (!$lrdd) {
 210                         return array();
 211                 }
 212
 213                 foreach ($lrdd as $key => $link) {
 214                         if ($webfinger) {
 215                                 continue;
 216                         }
 217
 218                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 219                                 continue;
 220                         }
 221
 222                         $path = str_replace('{uri}', urlencode($uri), $link);
 223                         $webfinger = self::webfinger($path);
 224
 225                         if (!$webfinger AND (strstr($uri, "@"))) {
 226                                 $path = str_replace('{uri}', urlencode("acct:".$uri), $link);
 227                                 $webfinger = self::webfinger($path);
 228                         }
 229
 230                         // Special treatment for Mastodon
 231                         // Problem is that Mastodon uses an URL format like http://domain.tld/@nick
 232                         // But the webfinger for this format fails.
 233                         if (!$webfinger AND isset($nick)) {
 234                                 // Mastodon uses a "@" as prefix for usernames in their url format
 235                                 $nick = ltrim($nick, '@');
 236
 237                                 $addr = $nick."@".$host;
 238
 239                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 240                                 $webfinger = self::webfinger($path);
 241                         }
 242                 }
 243
 244                 if (!is_array($webfinger["links"])) {
 245                         return false;
 246                 }
 247
 248                 $data = array();
 249
 250                 foreach ($webfinger["links"] as $link) {
 251                         $data[] = array("@attributes" => $link);
 252                 }
 253
 254                 if (is_array($webfinger["aliases"])) {
 255                         foreach ($webfinger["aliases"] as $alias) {
 256                                 $data[] = array("@attributes" =>
 257                                                         array("rel" => "alias",
 258                                                                 "href" => $alias));
 259                         }
 260                 }
 261
 262                 return $data;
 263         }
 264
 265         /**
 266          * @brief Fetch information (protocol endpoints and user information) about a given uri
 267          *
 268          * @param string $uri Address that should be probed
 269          * @param string $network Test for this specific network
 270          * @param integer $uid User ID for the probe (only used for mails)
 271          * @param boolean $cache Use cached values?
 272          *
 273          * @return array uri data
 274          */
 275         public static function uri($uri, $network = "", $uid = 0, $cache = true) {
 276
 277                 if ($cache) {
 278                         $result = \Cache::get("probe_url:".$network.":".$uri);
 279                         if (!is_null($result)) {
 280                                 return $result;
 281                         }
 282                 }
 283
 284                 if ($uid == 0) {
 285                         $uid = local_user();
 286                 }
 287
 288                 $data = self::detect($uri, $network, $uid);
 289
 290                 if (!isset($data["url"])) {
 291                         $data["url"] = $uri;
 292                 }
 293
 294                 if ($data["photo"] != "") {
 295                         $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
 296                 } else {
 297                         $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
 298                 }
 299
 300                 if (!isset($data["name"]) OR ($data["name"] == "")) {
 301                         if (isset($data["nick"])) {
 302                                 $data["name"] = $data["nick"];
 303                         }
 304
 305                         if ($data["name"] == "") {
 306                                 $data["name"] = $data["url"];
 307                         }
 308                 }
 309
 310                 if (!isset($data["nick"]) OR ($data["nick"] == "")) {
 311                         $data["nick"] = strtolower($data["name"]);
 312
 313                         if (strpos($data['nick'], ' ')) {
 314                                 $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
 315                         }
 316                 }
 317
 318                 if (self::$baseurl != "") {
 319                         $data["baseurl"] = self::$baseurl;
 320                 }
 321
 322                 if (!isset($data["network"])) {
 323                         $data["network"] = NETWORK_PHANTOM;
 324                 }
 325
 326                 $data = self::rearrangeData($data);
 327
 328                 // Only store into the cache if the value seems to be valid
 329                 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
 330                         \Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
 331
 332                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 333                         /// The biggest problem is the avatar picture that could have a reduced image size.
 334                         /// It should only be updated if the existing picture isn't existing anymore.
 335                         /// We only update the contact when it is no probing for a specific network.
 336                         if (($data['network'] != NETWORK_FEED)
 337                                 AND ($network == "")
 338                                 AND $data["name"]
 339                                 AND $data["nick"]
 340                                 AND $data["url"]
 341                                 AND $data["addr"]
 342                                 AND $data["poll"]
 343                         ) {
 344                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 345                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 346                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 347                                         dbesc($data["name"]),
 348                                         dbesc($data["nick"]),
 349                                         dbesc($data["url"]),
 350                                         dbesc($data["addr"]),
 351                                         dbesc($data["notify"]),
 352                                         dbesc($data["poll"]),
 353                                         dbesc($data["alias"]),
 354                                         dbesc(datetime_convert()),
 355                                         dbesc(normalise_link($data['url']))
 356                                 );
 357                         }
 358                 }
 359
 360                 return $data;
 361         }
 362
 363         /**
 364          * @brief Fetch information (protocol endpoints and user information) about a given uri
 365          *
 366          * This function is only called by the "uri" function that adds caching and rearranging of data.
 367          *
 368          * @param string $uri Address that should be probed
 369          * @param string $network Test for this specific network
 370          * @param integer $uid User ID for the probe (only used for mails)
 371          *
 372          * @return array uri data
 373          */
 374         private function detect($uri, $network, $uid) {
 375                 $parts = parse_url($uri);
 376
 377                 if (isset($parts["scheme"]) AND isset($parts["host"]) AND isset($parts["path"])) {
 378                         $host = $parts["host"];
 379                         if (isset($parts["port"])) {
 380                                 $host .= ':'.$parts["port"];
 381                         }
 382
 383                         if ($host == 'twitter.com') {
 384                                 return array("network" => NETWORK_TWITTER);
 385                         }
 386                         $lrdd = self::xrd($host);
 387
 388                         $path_parts = explode("/", trim($parts["path"], "/"));
 389
 390                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 391                                 $host .= "/".array_shift($path_parts);
 392                                 $lrdd = self::xrd($host);
 393                         }
 394                         if (!$lrdd) {
 395                                 return self::feed($uri);
 396                         }
 397                         $nick = array_pop($path_parts);
 398
 399                         // Mastodon uses a "@" as prefix for usernames in their url format
 400                         $nick = ltrim($nick, '@');
 401
 402                         $addr = $nick."@".$host;
 403
 404                 } elseif (strstr($uri, '@')) {
 405                         // If the URI starts with "mailto:" then jump directly to the mail detection
 406                         if (strpos($uri, 'mailto:') !== false) {
 407                                 $uri = str_replace('mailto:', '', $uri);
 408                                 return self::mail($uri, $uid);
 409                         }
 410
 411                         if ($network == NETWORK_MAIL) {
 412                                 return self::mail($uri, $uid);
 413                         }
 414                         // Remove "acct:" from the URI
 415                         $uri = str_replace('acct:', '', $uri);
 416
 417                         $host = substr($uri, strpos($uri, '@') + 1);
 418                         $nick = substr($uri, 0, strpos($uri, '@'));
 419
 420                         if (strpos($uri, '@twitter.com')) {
 421                                 return array("network" => NETWORK_TWITTER);
 422                         }
 423                         $lrdd = self::xrd($host);
 424
 425                         if (!$lrdd) {
 426                                 return self::mail($uri, $uid);
 427                         }
 428                         $addr = $uri;
 429
 430                 } else {
 431                         return false;
 432                 }
 433
 434                 $webfinger = false;
 435
 436                 /// @todo Do we need the prefix "acct:" or "acct://"?
 437
 438                 foreach ($lrdd as $key => $link) {
 439                         if ($webfinger) {
 440                                 continue;
 441                         }
 442                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 443                                 continue;
 444                         }
 445                         // At first try it with the given uri
 446                         $path = str_replace('{uri}', urlencode($uri), $link);
 447                         $webfinger = self::webfinger($path);
 448
 449                         // We cannot be sure that the detected address was correct, so we don't use the values
 450                         if ($webfinger AND ($uri != $addr)) {
 451                                 $nick = "";
 452                                 $addr = "";
 453                         }
 454
 455                         // Try webfinger with the address (user@domain.tld)
 456                         if (!$webfinger) {
 457                                 $path = str_replace('{uri}', urlencode($addr), $link);
 458                                 $webfinger = self::webfinger($path);
 459                         }
 460
 461                         // Mastodon needs to have it with "acct:"
 462                         if (!$webfinger) {
 463                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 464                                 $webfinger = self::webfinger($path);
 465                         }
 466                 }
 467                 if (!$webfinger) {
 468                         return self::feed($uri);
 469                 }
 470
 471                 $result = false;
 472
 473                 logger("Probing ".$uri, LOGGER_DEBUG);
 474
 475                 if (in_array($network, array("", NETWORK_DFRN))) {
 476                         $result = self::dfrn($webfinger);
 477                 }
 478                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA)) {
 479                         $result = self::diaspora($webfinger);
 480                 }
 481                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS)) {
 482                         $result = self::ostatus($webfinger);
 483                 }
 484                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO)) {
 485                         $result = self::pumpio($webfinger);
 486                 }
 487                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED)) {
 488                         $result = self::feed($uri);
 489                 } else {
 490                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 491                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 492                         if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != "")) {
 493                                 $result["nick"] = $nick;
 494                         }
 495
 496                         if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != "")) {
 497                                 $result["addr"] = $addr;
 498                         }
 499                 }
 500
 501                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 502
 503                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 504                         $pos = strpos($result["url"], $host);
 505                         if ($pos) {
 506                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 507                         }
 508                 }
 509
 510                 return $result;
 511         }
 512
 513         /**
 514          * @brief Perform a webfinger request.
 515          *
 516          * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
 517          *
 518          * @param string $url Address that should be probed
 519          *
 520          * @return array webfinger data
 521          */
 522         private function webfinger($url) {
 523
 524                 $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
 525                 $redirects = 0;
 526
 527                 $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
 528                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 529                         return false;
 530                 }
 531                 $data = $ret['body'];
 532
 533                 $xrd = parse_xml_string($data, false);
 534
 535                 if (!is_object($xrd)) {
 536                         // If it is not XML, maybe it is JSON
 537                         $webfinger = json_decode($data, true);
 538
 539                         if (!isset($webfinger["links"])) {
 540                                 return false;
 541                         }
 542
 543                         return $webfinger;
 544                 }
 545
 546                 $xrd_arr = \xml::element_to_array($xrd);
 547                 if (!isset($xrd_arr["xrd"]["link"])) {
 548                         return false;
 549                 }
 550
 551                 $webfinger = array();
 552
 553                 if (isset($xrd_arr["xrd"]["subject"])) {
 554                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 555                 }
 556
 557                 if (isset($xrd_arr["xrd"]["alias"])) {
 558                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 559                 }
 560
 561                 $webfinger["links"] = array();
 562
 563                 foreach ($xrd_arr["xrd"]["link"] as $value => $data) {
 564                         if (isset($data["@attributes"])) {
 565                                 $attributes = $data["@attributes"];
 566                         } elseif ($value == "@attributes") {
 567                                 $attributes = $data;
 568                         } else {
 569                                 continue;
 570                         }
 571
 572                         $webfinger["links"][] = $attributes;
 573                 }
 574                 return $webfinger;
 575         }
 576
 577         /**
 578          * @brief Poll the Friendica specific noscrape page.
 579          *
 580          * "noscrape" is a faster alternative to fetch the data from the hcard.
 581          * This functionality was originally created for the directory.
 582          *
 583          * @param string $noscrape_url Link to the noscrape page
 584          * @param array $data The already fetched data
 585          *
 586          * @return array noscrape data
 587          */
 588         private function pollNoscrape($noscrape_url, $data) {
 589                 $ret = z_fetch_url($noscrape_url);
 590                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 591                         return false;
 592                 }
 593                 $content = $ret['body'];
 594                 if (!$content) {
 595                         return false;
 596                 }
 597
 598                 $json = json_decode($content, true);
 599                 if (!is_array($json)) {
 600                         return false;
 601                 }
 602
 603                 if (isset($json["fn"])) {
 604                         $data["name"] = $json["fn"];
 605                 }
 606
 607                 if (isset($json["addr"])) {
 608                         $data["addr"] = $json["addr"];
 609                 }
 610
 611                 if (isset($json["nick"])) {
 612                         $data["nick"] = $json["nick"];
 613                 }
 614
 615                 if (isset($json["comm"])) {
 616                         $data["community"] = $json["comm"];
 617                 }
 618
 619                 if (isset($json["tags"])) {
 620                         $keywords = implode(" ", $json["tags"]);
 621                         if ($keywords != "") {
 622                                 $data["keywords"] = $keywords;
 623                         }
 624                 }
 625
 626                 $location = formatted_location($json);
 627                 if ($location) {
 628                         $data["location"] = $location;
 629                 }
 630
 631                 if (isset($json["about"])) {
 632                         $data["about"] = $json["about"];
 633                 }
 634
 635                 if (isset($json["key"])) {
 636                         $data["pubkey"] = $json["key"];
 637                 }
 638
 639                 if (isset($json["photo"])) {
 640                         $data["photo"] = $json["photo"];
 641                 }
 642
 643                 if (isset($json["dfrn-request"])) {
 644                         $data["request"] = $json["dfrn-request"];
 645                 }
 646
 647                 if (isset($json["dfrn-confirm"])) {
 648                         $data["confirm"] = $json["dfrn-confirm"];
 649                 }
 650
 651                 if (isset($json["dfrn-notify"])) {
 652                         $data["notify"] = $json["dfrn-notify"];
 653                 }
 654
 655                 if (isset($json["dfrn-poll"])) {
 656                         $data["poll"] = $json["dfrn-poll"];
 657                 }
 658
 659                 return $data;
 660         }
 661
 662         /**
 663          * @brief Check for valid DFRN data
 664          *
 665          * @param array $data DFRN data
 666          *
 667          * @return int Number of errors
 668          */
 669         public static function validDfrn($data) {
 670                 $errors = 0;
 671                 if (!isset($data['key'])) {
 672                         $errors ++;
 673                 }
 674                 if (!isset($data['dfrn-request'])) {
 675                         $errors ++;
 676                 }
 677                 if (!isset($data['dfrn-confirm'])) {
 678                         $errors ++;
 679                 }
 680                 if (!isset($data['dfrn-notify'])) {
 681                         $errors ++;
 682                 }
 683                 if (!isset($data['dfrn-poll'])) {
 684                         $errors ++;
 685                 }
 686                 return $errors;
 687         }
 688
 689         /**
 690          * @brief Fetch data from a DFRN profile page and via "noscrape"
 691          *
 692          * @param string $profile_link Link to the profile page
 693          *
 694          * @return array profile data
 695          */
 696         public static function profile($profile_link) {
 697
 698                 $data = array();
 699
 700                 logger("Check profile ".$profile_link, LOGGER_DEBUG);
 701
 702                 // Fetch data via noscrape - this is faster
 703                 $noscrape_url = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile_link);
 704                 $data = self::pollNoscrape($noscrape_url, $data);
 705
 706                 if (!isset($data["notify"])
 707                         OR !isset($data["confirm"])
 708                         OR !isset($data["request"])
 709                         OR !isset($data["poll"])
 710                         OR !isset($data["poco"])
 711                         OR !isset($data["name"])
 712                         OR !isset($data["photo"])
 713                 ) {
 714                         $data = self::pollHcard($profile_link, $data, true);
 715                 }
 716
 717                 $prof_data = array();
 718                 $prof_data["addr"]         = $data["addr"];
 719                 $prof_data["nick"]         = $data["nick"];
 720                 $prof_data["dfrn-request"] = $data["request"];
 721                 $prof_data["dfrn-confirm"] = $data["confirm"];
 722                 $prof_data["dfrn-notify"]  = $data["notify"];
 723                 $prof_data["dfrn-poll"]    = $data["poll"];
 724                 $prof_data["dfrn-poco"]    = $data["poco"];
 725                 $prof_data["photo"]        = $data["photo"];
 726                 $prof_data["fn"]           = $data["name"];
 727                 $prof_data["key"]          = $data["pubkey"];
 728
 729                 logger("Result for profile ".$profile_link.": ".print_r($prof_data, true), LOGGER_DEBUG);
 730
 731                 return $prof_data;
 732         }
 733
 734         /**
 735          * @brief Check for DFRN contact
 736          *
 737          * @param array $webfinger Webfinger data
 738          *
 739          * @return array DFRN data
 740          */
 741         private function dfrn($webfinger) {
 742
 743                 $hcard_url = "";
 744                 $data = array();
 745                 foreach ($webfinger["links"] as $link) {
 746                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != "")) {
 747                                 $data["network"] = NETWORK_DFRN;
 748                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 749                                 $data["poll"] = $link["href"];
 750                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 751                                 $data["url"] = $link["href"];
 752                         } elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 753                                 $hcard_url = $link["href"];
 754                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 755                                 $data["poco"] = $link["href"];
 756                         } elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != "")) {
 757                                 $data["photo"] = $link["href"];
 758                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 759                                 $data["baseurl"] = trim($link["href"], '/');
 760                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 761                                 $data["guid"] = $link["href"];
 762                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 763                                 $data["pubkey"] = base64_decode($link["href"]);
 764
 765                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 766                                 if (strstr($data["pubkey"], 'RSA ')) {
 767                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 768                                 }
 769                         }
 770                 }
 771
 772                 if (!isset($data["network"]) OR ($hcard_url == "")) {
 773                         return false;
 774                 }
 775
 776                 // Fetch data via noscrape - this is faster
 777                 $noscrape_url = str_replace("/hcard/", "/noscrape/", $hcard_url);
 778                 $data = self::pollNoscrape($noscrape_url, $data);
 779
 780                 if (isset($data["notify"])
 781                         AND isset($data["confirm"])
 782                         AND isset($data["request"])
 783                         AND isset($data["poll"])
 784                         AND isset($data["name"])
 785                         AND isset($data["photo"])
 786                 ) {
 787                         return $data;
 788                 }
 789
 790                 $data = self::pollHcard($hcard_url, $data, true);
 791
 792                 return $data;
 793         }
 794
 795         /**
 796          * @brief Poll the hcard page (Diaspora and Friendica specific)
 797          *
 798          * @param string $hcard_url Link to the hcard page
 799          * @param array $data The already fetched data
 800          * @param boolean $dfrn Poll DFRN specific data
 801          *
 802          * @return array hcard data
 803          */
 804         private function pollHcard($hcard_url, $data, $dfrn = false) {
 805                 $ret = z_fetch_url($hcard_url);
 806                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 807                         return false;
 808                 }
 809                 $content = $ret['body'];
 810                 if (!$content) {
 811                         return false;
 812                 }
 813
 814                 $doc = new \DOMDocument();
 815                 if (!@$doc->loadHTML($content)) {
 816                         return false;
 817                 }
 818
 819                 $xpath = new \DomXPath($doc);
 820
 821                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 822                 if (!is_object($vcards)) {
 823                         return false;
 824                 }
 825
 826                 if ($vcards->length > 0) {
 827                         $vcard = $vcards->item(0);
 828
 829                         // We have to discard the guid from the hcard in favour of the guid from lrdd
 830                         // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 831                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 832                         if (($search->length > 0) AND ($data["guid"] == "")) {
 833                                 $data["guid"] = $search->item(0)->nodeValue;
 834                         }
 835
 836                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 837                         if ($search->length > 0) {
 838                                 $data["nick"] = $search->item(0)->nodeValue;
 839                         }
 840
 841                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 842                         if ($search->length > 0) {
 843                                 $data["name"] = $search->item(0)->nodeValue;
 844                         }
 845
 846                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 847                         if ($search->length > 0) {
 848                                 $data["searchable"] = $search->item(0)->nodeValue;
 849                         }
 850
 851                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 852                         if ($search->length > 0) {
 853                                 $data["pubkey"] = $search->item(0)->nodeValue;
 854                                 if (strstr($data["pubkey"], 'RSA ')) {
 855                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 856                                 }
 857                         }
 858
 859                         $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 860                         if ($search->length > 0) {
 861                                 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 862                         }
 863                 }
 864
 865                 $avatar = array();
 866                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 867                 foreach ($photos as $photo) {
 868                         $attr = array();
 869                         foreach ($photo->attributes as $attribute) {
 870                                 $attr[$attribute->name] = trim($attribute->value);
 871                         }
 872
 873                         if (isset($attr["src"]) AND isset($attr["width"])) {
 874                                 $avatar[$attr["width"]] = $attr["src"];
 875                         }
 876
 877                         // We don't have a width. So we just take everything that we got.
 878                         // This is a Hubzilla workaround which doesn't send a width.
 879                         if ((sizeof($avatar) == 0) AND isset($attr["src"])) {
 880                                 $avatar[] = $attr["src"];
 881                         }
 882                 }
 883
 884                 if (sizeof($avatar)) {
 885                         ksort($avatar);
 886                         $data["photo"] = self::fixAvatar(array_pop($avatar), $data["baseurl"]);
 887                 }
 888
 889                 if ($dfrn) {
 890                         // Poll DFRN specific data
 891                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 892                         if ($search->length > 0) {
 893                                 foreach ($search as $link) {
 894                                         //$data["request"] = $search->item(0)->nodeValue;
 895                                         $attr = array();
 896                                         foreach ($link->attributes as $attribute) {
 897                                                 $attr[$attribute->name] = trim($attribute->value);
 898                                         }
 899
 900                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 901                                 }
 902                         }
 903
 904                         // Older Friendica versions had used the "uid" field differently than newer versions
 905                         if ($data["nick"] == $data["guid"]) {
 906                                 unset($data["guid"]);
 907                         }
 908                 }
 909
 910
 911                 return $data;
 912         }
 913
 914         /**
 915          * @brief Check for Diaspora contact
 916          *
 917          * @param array $webfinger Webfinger data
 918          *
 919          * @return array Diaspora data
 920          */
 921         private function diaspora($webfinger) {
 922
 923                 $hcard_url = "";
 924                 $data = array();
 925                 foreach ($webfinger["links"] as $link) {
 926                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 927                                 $hcard_url = $link["href"];
 928                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 929                                 $data["baseurl"] = trim($link["href"], '/');
 930                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 931                                 $data["guid"] = $link["href"];
 932                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 933                                 $data["url"] = $link["href"];
 934                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 935                                 $data["poll"] = $link["href"];
 936                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 937                                 $data["poco"] = $link["href"];
 938                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
 939                                 $data["notify"] = $link["href"];
 940                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 941                                 $data["pubkey"] = base64_decode($link["href"]);
 942
 943                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 944                                 if (strstr($data["pubkey"], 'RSA ')) {
 945                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 946                                 }
 947                         }
 948                 }
 949
 950                 if (!isset($data["url"]) OR ($hcard_url == "")) {
 951                         return false;
 952                 }
 953
 954                 if (is_array($webfinger["aliases"])) {
 955                         foreach ($webfinger["aliases"] as $alias) {
 956                                 if (normalise_link($alias) != normalise_link($data["url"]) AND ! strstr($alias, "@")) {
 957                                         $data["alias"] = $alias;
 958                                 }
 959                         }
 960                 }
 961
 962                 // Fetch further information from the hcard
 963                 $data = self::pollHcard($hcard_url, $data);
 964
 965                 if (!$data) {
 966                         return false;
 967                 }
 968
 969                 if (isset($data["url"])
 970                         AND isset($data["guid"])
 971                         AND isset($data["baseurl"])
 972                         AND isset($data["pubkey"])
 973                         AND ($hcard_url != "")
 974                 ) {
 975                         $data["network"] = NETWORK_DIASPORA;
 976
 977                         // The Diaspora handle must always be lowercase
 978                         $data["addr"] = strtolower($data["addr"]);
 979
 980                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 981                         $data["notify"] = $data["baseurl"] . "/receive/users/" . $data["guid"];
 982                         $data["batch"]  = $data["baseurl"] . "/receive/public";
 983                 } else {
 984                         return false;
 985                 }
 986
 987                 return $data;
 988         }
 989
 990         /**
 991          * @brief Check for OStatus contact
 992          *
 993          * @param array $webfinger Webfinger data
 994          *
 995          * @return array OStatus data
 996          */
 997         private function ostatus($webfinger) {
 998                 $data = array();
 999                 if (is_array($webfinger["aliases"])) {
1000                         foreach ($webfinger["aliases"] as $alias) {
1001                                 if (strstr($alias, "@")) {
1002                                         $data["addr"] = str_replace('acct:', '', $alias);
1003                                 }
1004                         }
1005                 }
1006
1007                 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
1008                         $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
1009                 }
1010                 $pubkey = "";
1011                 foreach ($webfinger["links"] as $link) {
1012                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1013                                 AND ($link["type"] == "text/html")
1014                                 AND ($link["href"] != "")
1015                         ) {
1016                                 $data["url"] = $link["href"];
1017                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
1018                                 $data["notify"] = $link["href"];
1019                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
1020                                 $data["poll"] = $link["href"];
1021                         } elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
1022                                 $pubkey = $link["href"];
1023
1024                                 if (substr($pubkey, 0, 5) === 'data:') {
1025                                         if (strstr($pubkey, ',')) {
1026                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
1027                                         } else {
1028                                                 $pubkey = substr($pubkey, 5);
1029                                         }
1030                                 } elseif (normalise_link($pubkey) == 'http://') {
1031                                         $ret = z_fetch_url($pubkey);
1032                                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1033                                                 return false;
1034                                         }
1035                                         $pubkey = $ret['body'];
1036                                 }
1037
1038                                 $key = explode(".", $pubkey);
1039
1040                                 if (sizeof($key) >= 3) {
1041                                         $m = base64url_decode($key[1]);
1042                                         $e = base64url_decode($key[2]);
1043                                         $data["pubkey"] = metopem($m, $e);
1044                                 }
1045                         }
1046                 }
1047
1048                 if (isset($data["notify"]) AND isset($data["pubkey"])
1049                         AND isset($data["poll"])
1050                         AND isset($data["url"])
1051                 ) {
1052                         $data["network"] = NETWORK_OSTATUS;
1053                 } else {
1054                         return false;
1055                 }
1056                 // Fetch all additional data from the feed
1057                 $ret = z_fetch_url($data["poll"]);
1058                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1059                         return false;
1060                 }
1061                 $feed = $ret['body'];
1062                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1063                 if (!$feed_data) {
1064                         return false;
1065                 }
1066                 if ($feed_data["header"]["author-name"] != "") {
1067                         $data["name"] = $feed_data["header"]["author-name"];
1068                 }
1069                 if ($feed_data["header"]["author-nick"] != "") {
1070                         $data["nick"] = $feed_data["header"]["author-nick"];
1071                 }
1072                 if ($feed_data["header"]["author-avatar"] != "") {
1073                         $data["photo"] = self::fixAvatar($feed_data["header"]["author-avatar"], $data["url"]);
1074                 }
1075                 if ($feed_data["header"]["author-id"] != "") {
1076                         $data["alias"] = $feed_data["header"]["author-id"];
1077                 }
1078                 if ($feed_data["header"]["author-location"] != "") {
1079                         $data["location"] = $feed_data["header"]["author-location"];
1080                 }
1081                 if ($feed_data["header"]["author-about"] != "") {
1082                         $data["about"] = $feed_data["header"]["author-about"];
1083                 }
1084                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
1085                 // So we take the value that we just fetched, although the other one worked as well
1086                 if ($feed_data["header"]["author-link"] != "") {
1087                         $data["url"] = $feed_data["header"]["author-link"];
1088                 }
1089                 /// @todo Fetch location and "about" from the feed as well
1090                 return $data;
1091         }
1092
1093         /**
1094          * @brief Fetch data from a pump.io profile page
1095          *
1096          * @param string $profile_link Link to the profile page
1097          *
1098          * @return array profile data
1099          */
1100         private function pumpioProfileData($profile_link) {
1101
1102                 $doc = new \DOMDocument();
1103                 if (!@$doc->loadHTMLFile($profile_link)) {
1104                         return false;
1105                 }
1106
1107                 $xpath = new \DomXPath($doc);
1108
1109                 $data = array();
1110
1111                 // This is ugly - but pump.io doesn't seem to know a better way for it
1112                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
1113                 $pos = strpos($data["name"], chr(10));
1114                 if ($pos) {
1115                         $data["name"] = trim(substr($data["name"], 0, $pos));
1116                 }
1117
1118                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
1119                 if ($avatar) {
1120                         foreach ($avatar->attributes as $attribute) {
1121                                 if ($attribute->name == "src") {
1122                                         $data["photo"] = trim($attribute->value);
1123                                 }
1124                         }
1125                 }
1126
1127                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
1128                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
1129
1130                 return $data;
1131         }
1132
1133         /**
1134          * @brief Check for pump.io contact
1135          *
1136          * @param array $webfinger Webfinger data
1137          *
1138          * @return array pump.io data
1139          */
1140         private function pumpio($webfinger) {
1141
1142                 $data = array();
1143                 foreach ($webfinger["links"] as $link) {
1144                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1145                                 AND ($link["type"] == "text/html")
1146                                 AND ($link["href"] != "")
1147                         ) {
1148                                 $data["url"] = $link["href"];
1149                         } elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != "")) {
1150                                 $data["notify"] = $link["href"];
1151                         } elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != "")) {
1152                                 $data["poll"] = $link["href"];
1153                         } elseif (($link["rel"] == "dialback") AND ($link["href"] != "")) {
1154                                 $data["dialback"] = $link["href"];
1155                         }
1156                 }
1157                 if (isset($data["poll"]) AND isset($data["notify"])
1158                         AND isset($data["dialback"])
1159                         AND isset($data["url"])
1160                 ) {
1161                         // by now we use these fields only for the network type detection
1162                         // So we unset all data that isn't used at the moment
1163                         unset($data["dialback"]);
1164
1165                         $data["network"] = NETWORK_PUMPIO;
1166                 } else {
1167                         return false;
1168                 }
1169
1170                 $profile_data = self::pumpioProfileData($data["url"]);
1171
1172                 if (!$profile_data) {
1173                         return false;
1174                 }
1175
1176                 $data = array_merge($data, $profile_data);
1177
1178                 return $data;
1179         }
1180
1181         /**
1182          * @brief Check page for feed link
1183          *
1184          * @param string $url Page link
1185          *
1186          * @return string feed link
1187          */
1188         private function getFeedLink($url) {
1189                 $doc = new \DOMDocument();
1190
1191                 if (!@$doc->loadHTMLFile($url)) {
1192                         return false;
1193                 }
1194
1195                 $xpath = new \DomXPath($doc);
1196
1197                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
1198                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
1199                 if (!is_object($feeds)) {
1200                         return false;
1201                 }
1202
1203                 if ($feeds->length == 0) {
1204                         return false;
1205                 }
1206
1207                 $feed_url = "";
1208
1209                 foreach ($feeds as $feed) {
1210                         $attr = array();
1211                         foreach ($feed->attributes as $attribute) {
1212                                 $attr[$attribute->name] = trim($attribute->value);
1213                         }
1214
1215                         if ($feed_url == "") {
1216                                 $feed_url = $attr["href"];
1217                         }
1218                 }
1219
1220                 return $feed_url;
1221         }
1222
1223         /**
1224          * @brief Check for feed contact
1225          *
1226          * @param string $url Profile link
1227          * @param boolean $probe Do a probe if the page contains a feed link
1228          *
1229          * @return array feed data
1230          */
1231         private function feed($url, $probe = true) {
1232                 $ret = z_fetch_url($url);
1233                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1234                         return false;
1235                 }
1236                 $feed = $ret['body'];
1237                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1238
1239                 if (!$feed_data) {
1240                         if (!$probe) {
1241                                 return false;
1242                         }
1243
1244                         $feed_url = self::getFeedLink($url);
1245
1246                         if (!$feed_url) {
1247                                 return false;
1248                         }
1249
1250                         return self::feed($feed_url, false);
1251                 }
1252
1253                 if ($feed_data["header"]["author-name"] != "") {
1254                         $data["name"] = $feed_data["header"]["author-name"];
1255                 }
1256
1257                 if ($feed_data["header"]["author-nick"] != "") {
1258                         $data["nick"] = $feed_data["header"]["author-nick"];
1259                 }
1260
1261                 if ($feed_data["header"]["author-avatar"] != "") {
1262                         $data["photo"] = $feed_data["header"]["author-avatar"];
1263                 }
1264
1265                 if ($feed_data["header"]["author-id"] != "") {
1266                         $data["alias"] = $feed_data["header"]["author-id"];
1267                 }
1268
1269                 $data["url"] = $url;
1270                 $data["poll"] = $url;
1271
1272                 if ($feed_data["header"]["author-link"] != "") {
1273                         $data["baseurl"] = $feed_data["header"]["author-link"];
1274                 } else {
1275                         $data["baseurl"] = $data["url"];
1276                 }
1277
1278                 $data["network"] = NETWORK_FEED;
1279
1280                 return $data;
1281         }
1282
1283         /**
1284          * @brief Check for mail contact
1285          *
1286          * @param string $uri Profile link
1287          * @param integer $uid User ID
1288          *
1289          * @return array mail data
1290          */
1291         private function mail($uri, $uid) {
1292
1293                 if (!validate_email($uri)) {
1294                         return false;
1295                 }
1296
1297                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1298
1299                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1300
1301                 if (\dbm::is_result($x) && \dbm::is_result($r)) {
1302                         $mailbox = construct_mailbox_name($r[0]);
1303                         $password = '';
1304                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password, $x[0]['prvkey']);
1305                         $mbox = email_connect($mailbox, $r[0]['user'], $password);
1306                         if (!mbox) {
1307                                 return false;
1308                         }
1309                 }
1310
1311                 $msgs = email_poll($mbox, $uri);
1312                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1313
1314                 if (!count($msgs)) {
1315                         return false;
1316                 }
1317
1318                 $phost = substr($uri, strpos($uri, '@') + 1);
1319
1320                 $data = array();
1321                 $data["addr"]    = $uri;
1322                 $data["network"] = NETWORK_MAIL;
1323                 $data["name"]    = substr($uri, 0, strpos($uri, '@'));
1324                 $data["nick"]    = $data["name"];
1325                 $data["photo"]   = avatar_img($uri);
1326                 $data["url"]     = 'http://'.$phost."/".$data["nick"];
1327                 $data["notify"]  = 'smtp '.random_string();
1328                 $data["poll"]    = 'email '.random_string();
1329
1330                 $x = email_msg_meta($mbox, $msgs[0]);
1331                 if (stristr($x[0]->from, $uri)) {
1332                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1333                 } elseif (stristr($x[0]->to, $uri)) {
1334                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1335                 }
1336                 if (isset($adr)) {
1337                         foreach ($adr as $feadr) {
1338                                 if ((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1339                                         &&(strcasecmp($feadr->host, $phost) == 0)
1340                                         && (strlen($feadr->personal))
1341                                 ) {
1342                                         $personal = imap_mime_header_decode($feadr->personal);
1343                                         $data["name"] = "";
1344                                         foreach ($personal as $perspart) {
1345                                                 if ($perspart->charset != "default") {
1346                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1347                                                 } else {
1348                                                         $data["name"] .= $perspart->text;
1349                                                 }
1350                                         }
1351
1352                                         $data["name"] = notags($data["name"]);
1353                                 }
1354                         }
1355                 }
1356                 imap_close($mbox);
1357
1358                 return $data;
1359         }
1360
1361         /**
1362          * @brief Mix two paths together to possibly fix missing parts
1363          *
1364          * @param string $avatar Path to the avatar
1365          * @param string $base Another path that is hopefully complete
1366          *
1367          * @return string fixed avatar path
1368          */
1369         public static function fixAvatar($avatar, $base) {
1370                 $base_parts = parse_url($base);
1371
1372                 // Remove all parts that could create a problem
1373                 unset($base_parts['path']);
1374                 unset($base_parts['query']);
1375                 unset($base_parts['fragment']);
1376
1377                 $avatar_parts = parse_url($avatar);
1378
1379                 // Now we mix them
1380                 $parts = array_merge($base_parts, $avatar_parts);
1381
1382                 // And put them together again
1383                 $scheme   = isset($parts['scheme'])   ? $parts['scheme'] . '://' : '';
1384                 $host     = isset($parts['host'])     ? $parts['host']           : '';
1385                 $port     = isset($parts['port'])     ? ':' . $parts['port']     : '';
1386                 $path     = isset($parts['path'])     ? $parts['path']           : '';
1387                 $query    = isset($parts['query'])    ? '?' . $parts['query']    : '';
1388                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
1389
1390                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
1391
1392                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
1393
1394                 return $fixed;
1395         }
1396 }