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 use dbm;
  15 use Cache;
  16 use xml;
  17
  18 use DomXPath;
  19 use DOMDocument;
  20
  21 require_once 'include/feed.php';
  22 require_once 'include/email.php';
  23 require_once 'include/network.php';
  24
  25 /**
  26  * @brief This class contain functions for probing URL
  27  *
  28  */
  29 class Probe {
  30
  31         private static $baseurl;
  32
  33         /**
  34          * @brief Rearrange the array so that it always has the same order
  35          *
  36          * @param array $data Unordered data
  37          *
  38          * @return array Ordered data
  39          */
  40         private function rearrangeData($data) {
  41                 $fields = array("name", "nick", "guid", "url", "addr", "alias",
  42                                 "photo", "community", "keywords", "location", "about",
  43                                 "batch", "notify", "poll", "request", "confirm", "poco",
  44                                 "priority", "network", "pubkey", "baseurl");
  45
  46                 $newdata = array();
  47                 foreach ($fields as $field) {
  48                         if (isset($data[$field])) {
  49                                 $newdata[$field] = $data[$field];
  50                         } else {
  51                                 $newdata[$field] = "";
  52                         }
  53                 }
  54
  55                 // We don't use the "priority" field anymore and replace it with a dummy.
  56                 $newdata["priority"] = 0;
  57
  58                 return $newdata;
  59         }
  60
  61         /**
  62          * @brief Probes for XRD data
  63          *
  64          * @param string $host The host part of an url
  65          *
  66          * @return array
  67          *      'lrdd' => Link to LRDD endpoint
  68          *      'lrdd-xml' => Link to LRDD endpoint in XML format
  69          *      'lrdd-json' => Link to LRDD endpoint in JSON format
  70          */
  71         private function xrd($host) {
  72
  73                 // Reset the static variable
  74                 self::$baseurl = '';
  75
  76                 $ssl_url = "https://".$host."/.well-known/host-meta";
  77                 $url = "http://".$host."/.well-known/host-meta";
  78
  79                 $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
  80                 $redirects = 0;
  81
  82                 $ret = z_fetch_url($ssl_url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  83                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  84                         return false;
  85                 }
  86                 $xml = $ret['body'];
  87
  88                 $xrd = parse_xml_string($xml, false);
  89
  90                 if (!is_object($xrd)) {
  91                         $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
  92                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
  93                                 return false;
  94                         }
  95                         $xml = $ret['body'];
  96                         $xrd = parse_xml_string($xml, false);
  97                 }
  98                 if (!is_object($xrd)) {
  99                         return false;
 100                 }
 101
 102                 $links = xml::element_to_array($xrd);
 103                 if (!isset($links["xrd"]["link"])) {
 104                         return false;
 105                 }
 106
 107                 $xrd_data = array();
 108
 109                 foreach ($links["xrd"]["link"] as $value => $link) {
 110                         if (isset($link["@attributes"])) {
 111                                 $attributes = $link["@attributes"];
 112                         } elseif ($value == "@attributes") {
 113                                 $attributes = $link;
 114                         } else {
 115                                 continue;
 116                         }
 117
 118                         if (($attributes["rel"] == "lrdd")
 119                                 AND ($attributes["type"] == "application/xrd+xml")
 120                         ) {
 121                                 $xrd_data["lrdd-xml"] = $attributes["template"];
 122                         } elseif (($attributes["rel"] == "lrdd")
 123                                 AND ($attributes["type"] == "application/json")
 124                         ) {
 125                                 $xrd_data["lrdd-json"] = $attributes["template"];
 126                         } elseif ($attributes["rel"] == "lrdd") {
 127                                 $xrd_data["lrdd"] = $attributes["template"];
 128                         }
 129                 }
 130
 131                 self::$baseurl = "http://".$host;
 132
 133                 return $xrd_data;
 134         }
 135
 136         /**
 137          * @brief Perform Webfinger lookup and return DFRN data
 138          *
 139          * Given an email style address, perform webfinger lookup and
 140          * return the resulting DFRN profile URL, or if no DFRN profile URL
 141          * is located, returns an OStatus subscription template (prefixed
 142          * with the string 'stat:' to identify it as on OStatus template).
 143          * If this isn't an email style address just return $webbie.
 144          * Return an empty string if email-style addresses but webfinger fails,
 145          * or if the resultant personal XRD doesn't contain a supported
 146          * subscription/friend-request attribute.
 147          *
 148          * amended 7/9/2011 to return an hcard which could save potentially loading
 149          * a lengthy content page to scrape dfrn attributes
 150          *
 151          * @param string $webbie Address that should be probed
 152          * @param string $hcard_url Link to the hcard - is returned by reference
 153          *
 154          * @return string profile link
 155          */
 156
 157         public static function webfingerDfrn($webbie, &$hcard_url) {
 158
 159                 $profile_link = '';
 160
 161                 $links = self::lrdd($webbie);
 162                 logger('webfingerDfrn: '.$webbie.':'.print_r($links, true), LOGGER_DATA);
 163                 if (count($links)) {
 164                         foreach ($links as $link) {
 165                                 if ($link['@attributes']['rel'] === NAMESPACE_DFRN) {
 166                                         $profile_link = $link['@attributes']['href'];
 167                                 }
 168                                 if (($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) AND ($profile_link == "")) {
 169                                         $profile_link = 'stat:'.$link['@attributes']['template'];
 170                                 }
 171                                 if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard') {
 172                                         $hcard_url = $link['@attributes']['href'];
 173                                 }
 174                         }
 175                 }
 176                 return $profile_link;
 177         }
 178
 179         /**
 180          * @brief Check an URI for LRDD data
 181          *
 182          * this is a replacement for the "lrdd" function in include/network.php.
 183          * It isn't used in this class and has some redundancies in the code.
 184          * When time comes we can check the existing calls for "lrdd" if we can rework them.
 185          *
 186          * @param string $uri Address that should be probed
 187          *
 188          * @return array uri data
 189          */
 190         public static function lrdd($uri) {
 191
 192                 $lrdd = self::xrd($uri);
 193                 $webfinger = null;
 194
 195                 if (!$lrdd) {
 196                         $parts = @parse_url($uri);
 197                         if (!$parts) {
 198                                 return array();
 199                         }
 200
 201                         $host = $parts["host"];
 202                         if (isset($parts["port"])) {
 203                                 $host .= ':'.$parts["port"];
 204                         }
 205
 206                         $path_parts = explode("/", trim($parts["path"], "/"));
 207
 208                         $nick = array_pop($path_parts);
 209
 210                         do {
 211                                 $lrdd = self::xrd($host);
 212                                 $host .= "/".array_shift($path_parts);
 213                         } while (!$lrdd AND (sizeof($path_parts) > 0));
 214                 }
 215
 216                 if (!$lrdd) {
 217                         return array();
 218                 }
 219
 220                 foreach ($lrdd as $key => $link) {
 221                         if ($webfinger) {
 222                                 continue;
 223                         }
 224
 225                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 226                                 continue;
 227                         }
 228
 229                         $path = str_replace('{uri}', urlencode($uri), $link);
 230                         $webfinger = self::webfinger($path);
 231
 232                         if (!$webfinger AND (strstr($uri, "@"))) {
 233                                 $path = str_replace('{uri}', urlencode("acct:".$uri), $link);
 234                                 $webfinger = self::webfinger($path);
 235                         }
 236
 237                         // Special treatment for Mastodon
 238                         // Problem is that Mastodon uses an URL format like http://domain.tld/@nick
 239                         // But the webfinger for this format fails.
 240                         if (!$webfinger AND isset($nick)) {
 241                                 // Mastodon uses a "@" as prefix for usernames in their url format
 242                                 $nick = ltrim($nick, '@');
 243
 244                                 $addr = $nick."@".$host;
 245
 246                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 247                                 $webfinger = self::webfinger($path);
 248                         }
 249                 }
 250
 251                 if (!is_array($webfinger["links"])) {
 252                         return false;
 253                 }
 254
 255                 $data = array();
 256
 257                 foreach ($webfinger["links"] as $link) {
 258                         $data[] = array("@attributes" => $link);
 259                 }
 260
 261                 if (is_array($webfinger["aliases"])) {
 262                         foreach ($webfinger["aliases"] as $alias) {
 263                                 $data[] = array("@attributes" =>
 264                                                         array("rel" => "alias",
 265                                                                 "href" => $alias));
 266                         }
 267                 }
 268
 269                 return $data;
 270         }
 271
 272         /**
 273          * @brief Fetch information (protocol endpoints and user information) about a given uri
 274          *
 275          * @param string $uri Address that should be probed
 276          * @param string $network Test for this specific network
 277          * @param integer $uid User ID for the probe (only used for mails)
 278          * @param boolean $cache Use cached values?
 279          *
 280          * @return array uri data
 281          */
 282         public static function uri($uri, $network = "", $uid = 0, $cache = true) {
 283
 284                 if ($cache) {
 285                         $result = Cache::get("probe_url:".$network.":".$uri);
 286                         if (!is_null($result)) {
 287                                 return $result;
 288                         }
 289                 }
 290
 291                 if ($uid == 0) {
 292                         $uid = local_user();
 293                 }
 294
 295                 $data = self::detect($uri, $network, $uid);
 296
 297                 if (!isset($data["url"])) {
 298                         $data["url"] = $uri;
 299                 }
 300
 301                 if ($data["photo"] != "") {
 302                         $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
 303                 } else {
 304                         $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
 305                 }
 306
 307                 if (!isset($data["name"]) OR ($data["name"] == "")) {
 308                         if (isset($data["nick"])) {
 309                                 $data["name"] = $data["nick"];
 310                         }
 311
 312                         if ($data["name"] == "") {
 313                                 $data["name"] = $data["url"];
 314                         }
 315                 }
 316
 317                 if (!isset($data["nick"]) OR ($data["nick"] == "")) {
 318                         $data["nick"] = strtolower($data["name"]);
 319
 320                         if (strpos($data['nick'], ' ')) {
 321                                 $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
 322                         }
 323                 }
 324
 325                 if (self::$baseurl != "") {
 326                         $data["baseurl"] = self::$baseurl;
 327                 }
 328
 329                 if (!isset($data["network"])) {
 330                         $data["network"] = NETWORK_PHANTOM;
 331                 }
 332
 333                 $data = self::rearrangeData($data);
 334
 335                 // Only store into the cache if the value seems to be valid
 336                 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
 337                         Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
 338
 339                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 340                         /// The biggest problem is the avatar picture that could have a reduced image size.
 341                         /// It should only be updated if the existing picture isn't existing anymore.
 342                         /// We only update the contact when it is no probing for a specific network.
 343                         if (($data['network'] != NETWORK_FEED)
 344                                 AND ($network == "")
 345                                 AND $data["name"]
 346                                 AND $data["nick"]
 347                                 AND $data["url"]
 348                                 AND $data["addr"]
 349                                 AND $data["poll"]
 350                         ) {
 351                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 352                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 353                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 354                                         dbesc($data["name"]),
 355                                         dbesc($data["nick"]),
 356                                         dbesc($data["url"]),
 357                                         dbesc($data["addr"]),
 358                                         dbesc($data["notify"]),
 359                                         dbesc($data["poll"]),
 360                                         dbesc($data["alias"]),
 361                                         dbesc(datetime_convert()),
 362                                         dbesc(normalise_link($data['url']))
 363                                 );
 364                         }
 365                 }
 366
 367                 return $data;
 368         }
 369
 370         /**
 371          * @brief Fetch information (protocol endpoints and user information) about a given uri
 372          *
 373          * This function is only called by the "uri" function that adds caching and rearranging of data.
 374          *
 375          * @param string $uri Address that should be probed
 376          * @param string $network Test for this specific network
 377          * @param integer $uid User ID for the probe (only used for mails)
 378          *
 379          * @return array uri data
 380          */
 381         private function detect($uri, $network, $uid) {
 382                 $parts = parse_url($uri);
 383
 384                 if (isset($parts["scheme"]) AND isset($parts["host"]) AND isset($parts["path"])) {
 385                         $host = $parts["host"];
 386                         if (isset($parts["port"])) {
 387                                 $host .= ':'.$parts["port"];
 388                         }
 389
 390                         if ($host == 'twitter.com') {
 391                                 return array("network" => NETWORK_TWITTER);
 392                         }
 393                         $lrdd = self::xrd($host);
 394
 395                         $path_parts = explode("/", trim($parts["path"], "/"));
 396
 397                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 398                                 $host .= "/".array_shift($path_parts);
 399                                 $lrdd = self::xrd($host);
 400                         }
 401                         if (!$lrdd) {
 402                                 return self::feed($uri);
 403                         }
 404                         $nick = array_pop($path_parts);
 405
 406                         // Mastodon uses a "@" as prefix for usernames in their url format
 407                         $nick = ltrim($nick, '@');
 408
 409                         $addr = $nick."@".$host;
 410
 411                 } elseif (strstr($uri, '@')) {
 412                         // If the URI starts with "mailto:" then jump directly to the mail detection
 413                         if (strpos($uri, 'mailto:') !== false) {
 414                                 $uri = str_replace('mailto:', '', $uri);
 415                                 return self::mail($uri, $uid);
 416                         }
 417
 418                         if ($network == NETWORK_MAIL) {
 419                                 return self::mail($uri, $uid);
 420                         }
 421                         // Remove "acct:" from the URI
 422                         $uri = str_replace('acct:', '', $uri);
 423
 424                         $host = substr($uri, strpos($uri, '@') + 1);
 425                         $nick = substr($uri, 0, strpos($uri, '@'));
 426
 427                         if (strpos($uri, '@twitter.com')) {
 428                                 return array("network" => NETWORK_TWITTER);
 429                         }
 430                         $lrdd = self::xrd($host);
 431
 432                         if (!$lrdd) {
 433                                 return self::mail($uri, $uid);
 434                         }
 435                         $addr = $uri;
 436
 437                 } else {
 438                         return false;
 439                 }
 440
 441                 $webfinger = false;
 442
 443                 /// @todo Do we need the prefix "acct:" or "acct://"?
 444
 445                 foreach ($lrdd as $key => $link) {
 446                         if ($webfinger) {
 447                                 continue;
 448                         }
 449                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 450                                 continue;
 451                         }
 452                         // At first try it with the given uri
 453                         $path = str_replace('{uri}', urlencode($uri), $link);
 454                         $webfinger = self::webfinger($path);
 455
 456                         // We cannot be sure that the detected address was correct, so we don't use the values
 457                         if ($webfinger AND ($uri != $addr)) {
 458                                 $nick = "";
 459                                 $addr = "";
 460                         }
 461
 462                         // Try webfinger with the address (user@domain.tld)
 463                         if (!$webfinger) {
 464                                 $path = str_replace('{uri}', urlencode($addr), $link);
 465                                 $webfinger = self::webfinger($path);
 466                         }
 467
 468                         // Mastodon needs to have it with "acct:"
 469                         if (!$webfinger) {
 470                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 471                                 $webfinger = self::webfinger($path);
 472                         }
 473                 }
 474                 if (!$webfinger) {
 475                         return self::feed($uri);
 476                 }
 477
 478                 $result = false;
 479
 480                 logger("Probing ".$uri, LOGGER_DEBUG);
 481
 482                 if (in_array($network, array("", NETWORK_DFRN))) {
 483                         $result = self::dfrn($webfinger);
 484                 }
 485                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA)) {
 486                         $result = self::diaspora($webfinger);
 487                 }
 488                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS)) {
 489                         $result = self::ostatus($webfinger);
 490                 }
 491                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO)) {
 492                         $result = self::pumpio($webfinger);
 493                 }
 494                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED)) {
 495                         $result = self::feed($uri);
 496                 } else {
 497                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 498                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 499                         if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != "")) {
 500                                 $result["nick"] = $nick;
 501                         }
 502
 503                         if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != "")) {
 504                                 $result["addr"] = $addr;
 505                         }
 506                 }
 507
 508                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 509
 510                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 511                         $pos = strpos($result["url"], $host);
 512                         if ($pos) {
 513                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 514                         }
 515                 }
 516
 517                 return $result;
 518         }
 519
 520         /**
 521          * @brief Perform a webfinger request.
 522          *
 523          * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
 524          *
 525          * @param string $url Address that should be probed
 526          *
 527          * @return array webfinger data
 528          */
 529         private function webfinger($url) {
 530
 531                 $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
 532                 $redirects = 0;
 533
 534                 $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
 535                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 536                         return false;
 537                 }
 538                 $data = $ret['body'];
 539
 540                 $xrd = parse_xml_string($data, false);
 541
 542                 if (!is_object($xrd)) {
 543                         // If it is not XML, maybe it is JSON
 544                         $webfinger = json_decode($data, true);
 545
 546                         if (!isset($webfinger["links"])) {
 547                                 return false;
 548                         }
 549
 550                         return $webfinger;
 551                 }
 552
 553                 $xrd_arr = xml::element_to_array($xrd);
 554                 if (!isset($xrd_arr["xrd"]["link"])) {
 555                         return false;
 556                 }
 557
 558                 $webfinger = array();
 559
 560                 if (isset($xrd_arr["xrd"]["subject"])) {
 561                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 562                 }
 563
 564                 if (isset($xrd_arr["xrd"]["alias"])) {
 565                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 566                 }
 567
 568                 $webfinger["links"] = array();
 569
 570                 foreach ($xrd_arr["xrd"]["link"] as $value => $data) {
 571                         if (isset($data["@attributes"])) {
 572                                 $attributes = $data["@attributes"];
 573                         } elseif ($value == "@attributes") {
 574                                 $attributes = $data;
 575                         } else {
 576                                 continue;
 577                         }
 578
 579                         $webfinger["links"][] = $attributes;
 580                 }
 581                 return $webfinger;
 582         }
 583
 584         /**
 585          * @brief Poll the Friendica specific noscrape page.
 586          *
 587          * "noscrape" is a faster alternative to fetch the data from the hcard.
 588          * This functionality was originally created for the directory.
 589          *
 590          * @param string $noscrape_url Link to the noscrape page
 591          * @param array $data The already fetched data
 592          *
 593          * @return array noscrape data
 594          */
 595         private function pollNoscrape($noscrape_url, $data) {
 596                 $ret = z_fetch_url($noscrape_url);
 597                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 598                         return false;
 599                 }
 600                 $content = $ret['body'];
 601                 if (!$content) {
 602                         return false;
 603                 }
 604
 605                 $json = json_decode($content, true);
 606                 if (!is_array($json)) {
 607                         return false;
 608                 }
 609
 610                 if (isset($json["fn"])) {
 611                         $data["name"] = $json["fn"];
 612                 }
 613
 614                 if (isset($json["addr"])) {
 615                         $data["addr"] = $json["addr"];
 616                 }
 617
 618                 if (isset($json["nick"])) {
 619                         $data["nick"] = $json["nick"];
 620                 }
 621
 622                 if (isset($json["comm"])) {
 623                         $data["community"] = $json["comm"];
 624                 }
 625
 626                 if (isset($json["tags"])) {
 627                         $keywords = implode(" ", $json["tags"]);
 628                         if ($keywords != "") {
 629                                 $data["keywords"] = $keywords;
 630                         }
 631                 }
 632
 633                 $location = formatted_location($json);
 634                 if ($location) {
 635                         $data["location"] = $location;
 636                 }
 637
 638                 if (isset($json["about"])) {
 639                         $data["about"] = $json["about"];
 640                 }
 641
 642                 if (isset($json["key"])) {
 643                         $data["pubkey"] = $json["key"];
 644                 }
 645
 646                 if (isset($json["photo"])) {
 647                         $data["photo"] = $json["photo"];
 648                 }
 649
 650                 if (isset($json["dfrn-request"])) {
 651                         $data["request"] = $json["dfrn-request"];
 652                 }
 653
 654                 if (isset($json["dfrn-confirm"])) {
 655                         $data["confirm"] = $json["dfrn-confirm"];
 656                 }
 657
 658                 if (isset($json["dfrn-notify"])) {
 659                         $data["notify"] = $json["dfrn-notify"];
 660                 }
 661
 662                 if (isset($json["dfrn-poll"])) {
 663                         $data["poll"] = $json["dfrn-poll"];
 664                 }
 665
 666                 return $data;
 667         }
 668
 669         /**
 670          * @brief Check for valid DFRN data
 671          *
 672          * @param array $data DFRN data
 673          *
 674          * @return int Number of errors
 675          */
 676         public static function validDfrn($data) {
 677                 $errors = 0;
 678                 if (!isset($data['key'])) {
 679                         $errors ++;
 680                 }
 681                 if (!isset($data['dfrn-request'])) {
 682                         $errors ++;
 683                 }
 684                 if (!isset($data['dfrn-confirm'])) {
 685                         $errors ++;
 686                 }
 687                 if (!isset($data['dfrn-notify'])) {
 688                         $errors ++;
 689                 }
 690                 if (!isset($data['dfrn-poll'])) {
 691                         $errors ++;
 692                 }
 693                 return $errors;
 694         }
 695
 696         /**
 697          * @brief Fetch data from a DFRN profile page and via "noscrape"
 698          *
 699          * @param string $profile_link Link to the profile page
 700          *
 701          * @return array profile data
 702          */
 703         public static function profile($profile_link) {
 704
 705                 $data = array();
 706
 707                 logger("Check profile ".$profile_link, LOGGER_DEBUG);
 708
 709                 // Fetch data via noscrape - this is faster
 710                 $noscrape_url = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile_link);
 711                 $data = self::pollNoscrape($noscrape_url, $data);
 712
 713                 if (!isset($data["notify"])
 714                         OR !isset($data["confirm"])
 715                         OR !isset($data["request"])
 716                         OR !isset($data["poll"])
 717                         OR !isset($data["poco"])
 718                         OR !isset($data["name"])
 719                         OR !isset($data["photo"])
 720                 ) {
 721                         $data = self::pollHcard($profile_link, $data, true);
 722                 }
 723
 724                 $prof_data = array();
 725                 $prof_data["addr"]         = $data["addr"];
 726                 $prof_data["nick"]         = $data["nick"];
 727                 $prof_data["dfrn-request"] = $data["request"];
 728                 $prof_data["dfrn-confirm"] = $data["confirm"];
 729                 $prof_data["dfrn-notify"]  = $data["notify"];
 730                 $prof_data["dfrn-poll"]    = $data["poll"];
 731                 $prof_data["dfrn-poco"]    = $data["poco"];
 732                 $prof_data["photo"]        = $data["photo"];
 733                 $prof_data["fn"]           = $data["name"];
 734                 $prof_data["key"]          = $data["pubkey"];
 735
 736                 logger("Result for profile ".$profile_link.": ".print_r($prof_data, true), LOGGER_DEBUG);
 737
 738                 return $prof_data;
 739         }
 740
 741         /**
 742          * @brief Check for DFRN contact
 743          *
 744          * @param array $webfinger Webfinger data
 745          *
 746          * @return array DFRN data
 747          */
 748         private function dfrn($webfinger) {
 749
 750                 $hcard_url = "";
 751                 $data = array();
 752                 foreach ($webfinger["links"] as $link) {
 753                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != "")) {
 754                                 $data["network"] = NETWORK_DFRN;
 755                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 756                                 $data["poll"] = $link["href"];
 757                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 758                                 $data["url"] = $link["href"];
 759                         } elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 760                                 $hcard_url = $link["href"];
 761                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 762                                 $data["poco"] = $link["href"];
 763                         } elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != "")) {
 764                                 $data["photo"] = $link["href"];
 765                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 766                                 $data["baseurl"] = trim($link["href"], '/');
 767                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 768                                 $data["guid"] = $link["href"];
 769                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 770                                 $data["pubkey"] = base64_decode($link["href"]);
 771
 772                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 773                                 if (strstr($data["pubkey"], 'RSA ')) {
 774                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 775                                 }
 776                         }
 777                 }
 778
 779                 if (!isset($data["network"]) OR ($hcard_url == "")) {
 780                         return false;
 781                 }
 782
 783                 // Fetch data via noscrape - this is faster
 784                 $noscrape_url = str_replace("/hcard/", "/noscrape/", $hcard_url);
 785                 $data = self::pollNoscrape($noscrape_url, $data);
 786
 787                 if (isset($data["notify"])
 788                         AND isset($data["confirm"])
 789                         AND isset($data["request"])
 790                         AND isset($data["poll"])
 791                         AND isset($data["name"])
 792                         AND isset($data["photo"])
 793                 ) {
 794                         return $data;
 795                 }
 796
 797                 $data = self::pollHcard($hcard_url, $data, true);
 798
 799                 return $data;
 800         }
 801
 802         /**
 803          * @brief Poll the hcard page (Diaspora and Friendica specific)
 804          *
 805          * @param string $hcard_url Link to the hcard page
 806          * @param array $data The already fetched data
 807          * @param boolean $dfrn Poll DFRN specific data
 808          *
 809          * @return array hcard data
 810          */
 811         private function pollHcard($hcard_url, $data, $dfrn = false) {
 812                 $ret = z_fetch_url($hcard_url);
 813                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 814                         return false;
 815                 }
 816                 $content = $ret['body'];
 817                 if (!$content) {
 818                         return false;
 819                 }
 820
 821                 $doc = new DOMDocument();
 822                 if (!@$doc->loadHTML($content)) {
 823                         return false;
 824                 }
 825
 826                 $xpath = new DomXPath($doc);
 827
 828                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 829                 if (!is_object($vcards)) {
 830                         return false;
 831                 }
 832
 833                 if ($vcards->length > 0) {
 834                         $vcard = $vcards->item(0);
 835
 836                         // We have to discard the guid from the hcard in favour of the guid from lrdd
 837                         // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 838                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 839                         if (($search->length > 0) AND ($data["guid"] == "")) {
 840                                 $data["guid"] = $search->item(0)->nodeValue;
 841                         }
 842
 843                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 844                         if ($search->length > 0) {
 845                                 $data["nick"] = $search->item(0)->nodeValue;
 846                         }
 847
 848                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 849                         if ($search->length > 0) {
 850                                 $data["name"] = $search->item(0)->nodeValue;
 851                         }
 852
 853                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 854                         if ($search->length > 0) {
 855                                 $data["searchable"] = $search->item(0)->nodeValue;
 856                         }
 857
 858                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 859                         if ($search->length > 0) {
 860                                 $data["pubkey"] = $search->item(0)->nodeValue;
 861                                 if (strstr($data["pubkey"], 'RSA ')) {
 862                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 863                                 }
 864                         }
 865
 866                         $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 867                         if ($search->length > 0) {
 868                                 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 869                         }
 870                 }
 871
 872                 $avatar = array();
 873                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 874                 foreach ($photos as $photo) {
 875                         $attr = array();
 876                         foreach ($photo->attributes as $attribute) {
 877                                 $attr[$attribute->name] = trim($attribute->value);
 878                         }
 879
 880                         if (isset($attr["src"]) AND isset($attr["width"])) {
 881                                 $avatar[$attr["width"]] = $attr["src"];
 882                         }
 883
 884                         // We don't have a width. So we just take everything that we got.
 885                         // This is a Hubzilla workaround which doesn't send a width.
 886                         if ((sizeof($avatar) == 0) AND isset($attr["src"])) {
 887                                 $avatar[] = $attr["src"];
 888                         }
 889                 }
 890
 891                 if (sizeof($avatar)) {
 892                         ksort($avatar);
 893                         $data["photo"] = self::fixAvatar(array_pop($avatar), $data["baseurl"]);
 894                 }
 895
 896                 if ($dfrn) {
 897                         // Poll DFRN specific data
 898                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 899                         if ($search->length > 0) {
 900                                 foreach ($search as $link) {
 901                                         //$data["request"] = $search->item(0)->nodeValue;
 902                                         $attr = array();
 903                                         foreach ($link->attributes as $attribute) {
 904                                                 $attr[$attribute->name] = trim($attribute->value);
 905                                         }
 906
 907                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 908                                 }
 909                         }
 910
 911                         // Older Friendica versions had used the "uid" field differently than newer versions
 912                         if ($data["nick"] == $data["guid"]) {
 913                                 unset($data["guid"]);
 914                         }
 915                 }
 916
 917
 918                 return $data;
 919         }
 920
 921         /**
 922          * @brief Check for Diaspora contact
 923          *
 924          * @param array $webfinger Webfinger data
 925          *
 926          * @return array Diaspora data
 927          */
 928         private function diaspora($webfinger) {
 929
 930                 $hcard_url = "";
 931                 $data = array();
 932                 foreach ($webfinger["links"] as $link) {
 933                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 934                                 $hcard_url = $link["href"];
 935                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 936                                 $data["baseurl"] = trim($link["href"], '/');
 937                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 938                                 $data["guid"] = $link["href"];
 939                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 940                                 $data["url"] = $link["href"];
 941                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 942                                 $data["poll"] = $link["href"];
 943                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 944                                 $data["poco"] = $link["href"];
 945                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
 946                                 $data["notify"] = $link["href"];
 947                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 948                                 $data["pubkey"] = base64_decode($link["href"]);
 949
 950                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 951                                 if (strstr($data["pubkey"], 'RSA ')) {
 952                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 953                                 }
 954                         }
 955                 }
 956
 957                 if (!isset($data["url"]) OR ($hcard_url == "")) {
 958                         return false;
 959                 }
 960
 961                 if (is_array($webfinger["aliases"])) {
 962                         foreach ($webfinger["aliases"] as $alias) {
 963                                 if (normalise_link($alias) != normalise_link($data["url"]) AND ! strstr($alias, "@")) {
 964                                         $data["alias"] = $alias;
 965                                 }
 966                         }
 967                 }
 968
 969                 // Fetch further information from the hcard
 970                 $data = self::pollHcard($hcard_url, $data);
 971
 972                 if (!$data) {
 973                         return false;
 974                 }
 975
 976                 if (isset($data["url"])
 977                         AND isset($data["guid"])
 978                         AND isset($data["baseurl"])
 979                         AND isset($data["pubkey"])
 980                         AND ($hcard_url != "")
 981                 ) {
 982                         $data["network"] = NETWORK_DIASPORA;
 983
 984                         // The Diaspora handle must always be lowercase
 985                         $data["addr"] = strtolower($data["addr"]);
 986
 987                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 988                         $data["notify"] = $data["baseurl"] . "/receive/users/" . $data["guid"];
 989                         $data["batch"]  = $data["baseurl"] . "/receive/public";
 990                 } else {
 991                         return false;
 992                 }
 993
 994                 return $data;
 995         }
 996
 997         /**
 998          * @brief Check for OStatus contact
 999          *
1000          * @param array $webfinger Webfinger data
1001          *
1002          * @return array OStatus data
1003          */
1004         private function ostatus($webfinger) {
1005                 $data = array();
1006                 if (is_array($webfinger["aliases"])) {
1007                         foreach ($webfinger["aliases"] as $alias) {
1008                                 if (strstr($alias, "@")) {
1009                                         $data["addr"] = str_replace('acct:', '', $alias);
1010                                 }
1011                         }
1012                 }
1013
1014                 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
1015                         $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
1016                 }
1017                 $pubkey = "";
1018                 foreach ($webfinger["links"] as $link) {
1019                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1020                                 AND ($link["type"] == "text/html")
1021                                 AND ($link["href"] != "")
1022                         ) {
1023                                 $data["url"] = $link["href"];
1024                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
1025                                 $data["notify"] = $link["href"];
1026                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
1027                                 $data["poll"] = $link["href"];
1028                         } elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
1029                                 $pubkey = $link["href"];
1030
1031                                 if (substr($pubkey, 0, 5) === 'data:') {
1032                                         if (strstr($pubkey, ',')) {
1033                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
1034                                         } else {
1035                                                 $pubkey = substr($pubkey, 5);
1036                                         }
1037                                 } elseif (normalise_link($pubkey) == 'http://') {
1038                                         $ret = z_fetch_url($pubkey);
1039                                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1040                                                 return false;
1041                                         }
1042                                         $pubkey = $ret['body'];
1043                                 }
1044
1045                                 $key = explode(".", $pubkey);
1046
1047                                 if (sizeof($key) >= 3) {
1048                                         $m = base64url_decode($key[1]);
1049                                         $e = base64url_decode($key[2]);
1050                                         $data["pubkey"] = metopem($m, $e);
1051                                 }
1052                         }
1053                 }
1054
1055                 if (isset($data["notify"]) AND isset($data["pubkey"])
1056                         AND isset($data["poll"])
1057                         AND isset($data["url"])
1058                 ) {
1059                         $data["network"] = NETWORK_OSTATUS;
1060                 } else {
1061                         return false;
1062                 }
1063                 // Fetch all additional data from the feed
1064                 $ret = z_fetch_url($data["poll"]);
1065                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1066                         return false;
1067                 }
1068                 $feed = $ret['body'];
1069                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1070                 if (!$feed_data) {
1071                         return false;
1072                 }
1073                 if ($feed_data["header"]["author-name"] != "") {
1074                         $data["name"] = $feed_data["header"]["author-name"];
1075                 }
1076                 if ($feed_data["header"]["author-nick"] != "") {
1077                         $data["nick"] = $feed_data["header"]["author-nick"];
1078                 }
1079                 if ($feed_data["header"]["author-avatar"] != "") {
1080                         $data["photo"] = self::fixAvatar($feed_data["header"]["author-avatar"], $data["url"]);
1081                 }
1082                 if ($feed_data["header"]["author-id"] != "") {
1083                         $data["alias"] = $feed_data["header"]["author-id"];
1084                 }
1085                 if ($feed_data["header"]["author-location"] != "") {
1086                         $data["location"] = $feed_data["header"]["author-location"];
1087                 }
1088                 if ($feed_data["header"]["author-about"] != "") {
1089                         $data["about"] = $feed_data["header"]["author-about"];
1090                 }
1091                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
1092                 // So we take the value that we just fetched, although the other one worked as well
1093                 if ($feed_data["header"]["author-link"] != "") {
1094                         $data["url"] = $feed_data["header"]["author-link"];
1095                 }
1096                 /// @todo Fetch location and "about" from the feed as well
1097                 return $data;
1098         }
1099
1100         /**
1101          * @brief Fetch data from a pump.io profile page
1102          *
1103          * @param string $profile_link Link to the profile page
1104          *
1105          * @return array profile data
1106          */
1107         private function pumpioProfileData($profile_link) {
1108
1109                 $doc = new DOMDocument();
1110                 if (!@$doc->loadHTMLFile($profile_link)) {
1111                         return false;
1112                 }
1113
1114                 $xpath = new DomXPath($doc);
1115
1116                 $data = array();
1117
1118                 // This is ugly - but pump.io doesn't seem to know a better way for it
1119                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
1120                 $pos = strpos($data["name"], chr(10));
1121                 if ($pos) {
1122                         $data["name"] = trim(substr($data["name"], 0, $pos));
1123                 }
1124
1125                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
1126                 if ($avatar) {
1127                         foreach ($avatar->attributes as $attribute) {
1128                                 if ($attribute->name == "src") {
1129                                         $data["photo"] = trim($attribute->value);
1130                                 }
1131                         }
1132                 }
1133
1134                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
1135                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
1136
1137                 return $data;
1138         }
1139
1140         /**
1141          * @brief Check for pump.io contact
1142          *
1143          * @param array $webfinger Webfinger data
1144          *
1145          * @return array pump.io data
1146          */
1147         private function pumpio($webfinger) {
1148
1149                 $data = array();
1150                 foreach ($webfinger["links"] as $link) {
1151                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1152                                 AND ($link["type"] == "text/html")
1153                                 AND ($link["href"] != "")
1154                         ) {
1155                                 $data["url"] = $link["href"];
1156                         } elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != "")) {
1157                                 $data["notify"] = $link["href"];
1158                         } elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != "")) {
1159                                 $data["poll"] = $link["href"];
1160                         } elseif (($link["rel"] == "dialback") AND ($link["href"] != "")) {
1161                                 $data["dialback"] = $link["href"];
1162                         }
1163                 }
1164                 if (isset($data["poll"]) AND isset($data["notify"])
1165                         AND isset($data["dialback"])
1166                         AND isset($data["url"])
1167                 ) {
1168                         // by now we use these fields only for the network type detection
1169                         // So we unset all data that isn't used at the moment
1170                         unset($data["dialback"]);
1171
1172                         $data["network"] = NETWORK_PUMPIO;
1173                 } else {
1174                         return false;
1175                 }
1176
1177                 $profile_data = self::pumpioProfileData($data["url"]);
1178
1179                 if (!$profile_data) {
1180                         return false;
1181                 }
1182
1183                 $data = array_merge($data, $profile_data);
1184
1185                 return $data;
1186         }
1187
1188         /**
1189          * @brief Check page for feed link
1190          *
1191          * @param string $url Page link
1192          *
1193          * @return string feed link
1194          */
1195         private function getFeedLink($url) {
1196                 $doc = new DOMDocument();
1197
1198                 if (!@$doc->loadHTMLFile($url)) {
1199                         return false;
1200                 }
1201
1202                 $xpath = new DomXPath($doc);
1203
1204                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
1205                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
1206                 if (!is_object($feeds)) {
1207                         return false;
1208                 }
1209
1210                 if ($feeds->length == 0) {
1211                         return false;
1212                 }
1213
1214                 $feed_url = "";
1215
1216                 foreach ($feeds as $feed) {
1217                         $attr = array();
1218                         foreach ($feed->attributes as $attribute) {
1219                                 $attr[$attribute->name] = trim($attribute->value);
1220                         }
1221
1222                         if ($feed_url == "") {
1223                                 $feed_url = $attr["href"];
1224                         }
1225                 }
1226
1227                 return $feed_url;
1228         }
1229
1230         /**
1231          * @brief Check for feed contact
1232          *
1233          * @param string $url Profile link
1234          * @param boolean $probe Do a probe if the page contains a feed link
1235          *
1236          * @return array feed data
1237          */
1238         private function feed($url, $probe = true) {
1239                 $ret = z_fetch_url($url);
1240                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1241                         return false;
1242                 }
1243                 $feed = $ret['body'];
1244                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1245
1246                 if (!$feed_data) {
1247                         if (!$probe) {
1248                                 return false;
1249                         }
1250
1251                         $feed_url = self::getFeedLink($url);
1252
1253                         if (!$feed_url) {
1254                                 return false;
1255                         }
1256
1257                         return self::feed($feed_url, false);
1258                 }
1259
1260                 if ($feed_data["header"]["author-name"] != "") {
1261                         $data["name"] = $feed_data["header"]["author-name"];
1262                 }
1263
1264                 if ($feed_data["header"]["author-nick"] != "") {
1265                         $data["nick"] = $feed_data["header"]["author-nick"];
1266                 }
1267
1268                 if ($feed_data["header"]["author-avatar"] != "") {
1269                         $data["photo"] = $feed_data["header"]["author-avatar"];
1270                 }
1271
1272                 if ($feed_data["header"]["author-id"] != "") {
1273                         $data["alias"] = $feed_data["header"]["author-id"];
1274                 }
1275
1276                 $data["url"] = $url;
1277                 $data["poll"] = $url;
1278
1279                 if ($feed_data["header"]["author-link"] != "") {
1280                         $data["baseurl"] = $feed_data["header"]["author-link"];
1281                 } else {
1282                         $data["baseurl"] = $data["url"];
1283                 }
1284
1285                 $data["network"] = NETWORK_FEED;
1286
1287                 return $data;
1288         }
1289
1290         /**
1291          * @brief Check for mail contact
1292          *
1293          * @param string $uri Profile link
1294          * @param integer $uid User ID
1295          *
1296          * @return array mail data
1297          */
1298         private function mail($uri, $uid) {
1299
1300                 if (!validate_email($uri)) {
1301                         return false;
1302                 }
1303
1304                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1305
1306                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1307
1308                 if (dbm::is_result($x) && dbm::is_result($r)) {
1309                         $mailbox = construct_mailbox_name($r[0]);
1310                         $password = '';
1311                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password, $x[0]['prvkey']);
1312                         $mbox = email_connect($mailbox, $r[0]['user'], $password);
1313                         if (!mbox) {
1314                                 return false;
1315                         }
1316                 }
1317
1318                 $msgs = email_poll($mbox, $uri);
1319                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1320
1321                 if (!count($msgs)) {
1322                         return false;
1323                 }
1324
1325                 $phost = substr($uri, strpos($uri, '@') + 1);
1326
1327                 $data = array();
1328                 $data["addr"]    = $uri;
1329                 $data["network"] = NETWORK_MAIL;
1330                 $data["name"]    = substr($uri, 0, strpos($uri, '@'));
1331                 $data["nick"]    = $data["name"];
1332                 $data["photo"]   = avatar_img($uri);
1333                 $data["url"]     = 'http://'.$phost."/".$data["nick"];
1334                 $data["notify"]  = 'smtp '.random_string();
1335                 $data["poll"]    = 'email '.random_string();
1336
1337                 $x = email_msg_meta($mbox, $msgs[0]);
1338                 if (stristr($x[0]->from, $uri)) {
1339                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1340                 } elseif (stristr($x[0]->to, $uri)) {
1341                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1342                 }
1343                 if (isset($adr)) {
1344                         foreach ($adr as $feadr) {
1345                                 if ((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1346                                         &&(strcasecmp($feadr->host, $phost) == 0)
1347                                         && (strlen($feadr->personal))
1348                                 ) {
1349                                         $personal = imap_mime_header_decode($feadr->personal);
1350                                         $data["name"] = "";
1351                                         foreach ($personal as $perspart) {
1352                                                 if ($perspart->charset != "default") {
1353                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1354                                                 } else {
1355                                                         $data["name"] .= $perspart->text;
1356                                                 }
1357                                         }
1358
1359                                         $data["name"] = notags($data["name"]);
1360                                 }
1361                         }
1362                 }
1363                 imap_close($mbox);
1364
1365                 return $data;
1366         }
1367
1368         /**
1369          * @brief Mix two paths together to possibly fix missing parts
1370          *
1371          * @param string $avatar Path to the avatar
1372          * @param string $base Another path that is hopefully complete
1373          *
1374          * @return string fixed avatar path
1375          */
1376         public static function fixAvatar($avatar, $base) {
1377                 $base_parts = parse_url($base);
1378
1379                 // Remove all parts that could create a problem
1380                 unset($base_parts['path']);
1381                 unset($base_parts['query']);
1382                 unset($base_parts['fragment']);
1383
1384                 $avatar_parts = parse_url($avatar);
1385
1386                 // Now we mix them
1387                 $parts = array_merge($base_parts, $avatar_parts);
1388
1389                 // And put them together again
1390                 $scheme   = isset($parts['scheme'])   ? $parts['scheme'] . '://' : '';
1391                 $host     = isset($parts['host'])     ? $parts['host']           : '';
1392                 $port     = isset($parts['port'])     ? ':' . $parts['port']     : '';
1393                 $path     = isset($parts['path'])     ? $parts['path']           : '';
1394                 $query    = isset($parts['query'])    ? '?' . $parts['query']    : '';
1395                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
1396
1397                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
1398
1399                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
1400
1401                 return $fixed;
1402         }
1403 }