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, $data, CACHE_DAY);
 331
 332                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 333                         /// The biggest problem is the avatar picture that could have a reduced image size.
 334                         /// It should only be updated if the existing picture isn't existing anymore.
 335                         if (($data['network'] != NETWORK_FEED)
 336                                 AND ($data["network"] != NETWORK_DIASPORA)
 337                                 AND $data["name"]
 338                                 AND $data["nick"]
 339                                 AND $data["url"]
 340                                 AND $data["addr"]
 341                                 AND $data["poll"]
 342                         ) {
 343                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 344                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 345                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 346                                         dbesc($data["name"]),
 347                                         dbesc($data["nick"]),
 348                                         dbesc($data["url"]),
 349                                         dbesc($data["addr"]),
 350                                         dbesc($data["notify"]),
 351                                         dbesc($data["poll"]),
 352                                         dbesc($data["alias"]),
 353                                         dbesc(datetime_convert()),
 354                                         dbesc(normalise_link($data['url']))
 355                                 );
 356                         }
 357                 }
 358
 359                 return $data;
 360         }
 361
 362         /**
 363          * @brief Fetch information (protocol endpoints and user information) about a given uri
 364          *
 365          * This function is only called by the "uri" function that adds caching and rearranging of data.
 366          *
 367          * @param string $uri Address that should be probed
 368          * @param string $network Test for this specific network
 369          * @param integer $uid User ID for the probe (only used for mails)
 370          *
 371          * @return array uri data
 372          */
 373         private function detect($uri, $network, $uid) {
 374                 $parts = parse_url($uri);
 375
 376                 if (isset($parts["scheme"]) AND isset($parts["host"]) AND isset($parts["path"])) {
 377                         $host = $parts["host"];
 378                         if (isset($parts["port"])) {
 379                                 $host .= ':'.$parts["port"];
 380                         }
 381
 382                         if ($host == 'twitter.com') {
 383                                 return array("network" => NETWORK_TWITTER);
 384                         }
 385                         $lrdd = self::xrd($host);
 386
 387                         $path_parts = explode("/", trim($parts["path"], "/"));
 388
 389                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 390                                 $host .= "/".array_shift($path_parts);
 391                                 $lrdd = self::xrd($host);
 392                         }
 393                         if (!$lrdd) {
 394                                 return self::feed($uri);
 395                         }
 396                         $nick = array_pop($path_parts);
 397
 398                         // Mastodon uses a "@" as prefix for usernames in their url format
 399                         $nick = ltrim($nick, '@');
 400
 401                         $addr = $nick."@".$host;
 402
 403                 } elseif (strstr($uri, '@')) {
 404                         // If the URI starts with "mailto:" then jump directly to the mail detection
 405                         if (strpos($uri, 'mailto:') !== false) {
 406                                 $uri = str_replace('mailto:', '', $uri);
 407                                 return self::mail($uri, $uid);
 408                         }
 409
 410                         if ($network == NETWORK_MAIL) {
 411                                 return self::mail($uri, $uid);
 412                         }
 413                         // Remove "acct:" from the URI
 414                         $uri = str_replace('acct:', '', $uri);
 415
 416                         $host = substr($uri, strpos($uri, '@') + 1);
 417                         $nick = substr($uri, 0, strpos($uri, '@'));
 418
 419                         if (strpos($uri, '@twitter.com')) {
 420                                 return array("network" => NETWORK_TWITTER);
 421                         }
 422                         $lrdd = self::xrd($host);
 423
 424                         if (!$lrdd) {
 425                                 return self::mail($uri, $uid);
 426                         }
 427                         $addr = $uri;
 428
 429                 } else {
 430                         return false;
 431                 }
 432
 433                 $webfinger = false;
 434
 435                 /// @todo Do we need the prefix "acct:" or "acct://"?
 436
 437                 foreach ($lrdd as $key => $link) {
 438                         if ($webfinger) {
 439                                 continue;
 440                         }
 441                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json"))) {
 442                                 continue;
 443                         }
 444                         // At first try it with the given uri
 445                         $path = str_replace('{uri}', urlencode($uri), $link);
 446                         $webfinger = self::webfinger($path);
 447
 448                         // We cannot be sure that the detected address was correct, so we don't use the values
 449                         if ($webfinger AND ($uri != $addr)) {
 450                                 $nick = "";
 451                                 $addr = "";
 452                         }
 453
 454                         // Try webfinger with the address (user@domain.tld)
 455                         if (!$webfinger) {
 456                                 $path = str_replace('{uri}', urlencode($addr), $link);
 457                                 $webfinger = self::webfinger($path);
 458                         }
 459
 460                         // Mastodon needs to have it with "acct:"
 461                         if (!$webfinger) {
 462                                 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
 463                                 $webfinger = self::webfinger($path);
 464                         }
 465                 }
 466                 if (!$webfinger) {
 467                         return self::feed($uri);
 468                 }
 469
 470                 $result = false;
 471
 472                 logger("Probing ".$uri, LOGGER_DEBUG);
 473
 474                 if (in_array($network, array("", NETWORK_DFRN))) {
 475                         $result = self::dfrn($webfinger);
 476                 }
 477                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA)) {
 478                         $result = self::diaspora($webfinger);
 479                 }
 480                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS)) {
 481                         $result = self::ostatus($webfinger);
 482                 }
 483                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO)) {
 484                         $result = self::pumpio($webfinger);
 485                 }
 486                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED)) {
 487                         $result = self::feed($uri);
 488                 } else {
 489                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 490                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 491                         if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != "")) {
 492                                 $result["nick"] = $nick;
 493                         }
 494
 495                         if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != "")) {
 496                                 $result["addr"] = $addr;
 497                         }
 498                 }
 499
 500                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 501
 502                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 503                         $pos = strpos($result["url"], $host);
 504                         if ($pos) {
 505                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 506                         }
 507                 }
 508
 509                 return $result;
 510         }
 511
 512         /**
 513          * @brief Perform a webfinger request.
 514          *
 515          * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
 516          *
 517          * @param string $url Address that should be probed
 518          *
 519          * @return array webfinger data
 520          */
 521         private function webfinger($url) {
 522
 523                 $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
 524                 $redirects = 0;
 525
 526                 $ret = z_fetch_url($url, false, $redirects, array('timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml'));
 527                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 528                         return false;
 529                 }
 530                 $data = $ret['body'];
 531
 532                 $xrd = parse_xml_string($data, false);
 533
 534                 if (!is_object($xrd)) {
 535                         // If it is not XML, maybe it is JSON
 536                         $webfinger = json_decode($data, true);
 537
 538                         if (!isset($webfinger["links"])) {
 539                                 return false;
 540                         }
 541
 542                         return $webfinger;
 543                 }
 544
 545                 $xrd_arr = \xml::element_to_array($xrd);
 546                 if (!isset($xrd_arr["xrd"]["link"])) {
 547                         return false;
 548                 }
 549
 550                 $webfinger = array();
 551
 552                 if (isset($xrd_arr["xrd"]["subject"])) {
 553                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 554                 }
 555
 556                 if (isset($xrd_arr["xrd"]["alias"])) {
 557                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 558                 }
 559
 560                 $webfinger["links"] = array();
 561
 562                 foreach ($xrd_arr["xrd"]["link"] as $value => $data) {
 563                         if (isset($data["@attributes"])) {
 564                                 $attributes = $data["@attributes"];
 565                         } elseif ($value == "@attributes") {
 566                                 $attributes = $data;
 567                         } else {
 568                                 continue;
 569                         }
 570
 571                         $webfinger["links"][] = $attributes;
 572                 }
 573                 return $webfinger;
 574         }
 575
 576         /**
 577          * @brief Poll the Friendica specific noscrape page.
 578          *
 579          * "noscrape" is a faster alternative to fetch the data from the hcard.
 580          * This functionality was originally created for the directory.
 581          *
 582          * @param string $noscrape_url Link to the noscrape page
 583          * @param array $data The already fetched data
 584          *
 585          * @return array noscrape data
 586          */
 587         private function pollNoscrape($noscrape_url, $data) {
 588                 $ret = z_fetch_url($noscrape_url);
 589                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 590                         return false;
 591                 }
 592                 $content = $ret['body'];
 593                 if (!$content) {
 594                         return false;
 595                 }
 596
 597                 $json = json_decode($content, true);
 598                 if (!is_array($json)) {
 599                         return false;
 600                 }
 601
 602                 if (isset($json["fn"])) {
 603                         $data["name"] = $json["fn"];
 604                 }
 605
 606                 if (isset($json["addr"])) {
 607                         $data["addr"] = $json["addr"];
 608                 }
 609
 610                 if (isset($json["nick"])) {
 611                         $data["nick"] = $json["nick"];
 612                 }
 613
 614                 if (isset($json["comm"])) {
 615                         $data["community"] = $json["comm"];
 616                 }
 617
 618                 if (isset($json["tags"])) {
 619                         $keywords = implode(" ", $json["tags"]);
 620                         if ($keywords != "") {
 621                                 $data["keywords"] = $keywords;
 622                         }
 623                 }
 624
 625                 $location = formatted_location($json);
 626                 if ($location) {
 627                         $data["location"] = $location;
 628                 }
 629
 630                 if (isset($json["about"])) {
 631                         $data["about"] = $json["about"];
 632                 }
 633
 634                 if (isset($json["key"])) {
 635                         $data["pubkey"] = $json["key"];
 636                 }
 637
 638                 if (isset($json["photo"])) {
 639                         $data["photo"] = $json["photo"];
 640                 }
 641
 642                 if (isset($json["dfrn-request"])) {
 643                         $data["request"] = $json["dfrn-request"];
 644                 }
 645
 646                 if (isset($json["dfrn-confirm"])) {
 647                         $data["confirm"] = $json["dfrn-confirm"];
 648                 }
 649
 650                 if (isset($json["dfrn-notify"])) {
 651                         $data["notify"] = $json["dfrn-notify"];
 652                 }
 653
 654                 if (isset($json["dfrn-poll"])) {
 655                         $data["poll"] = $json["dfrn-poll"];
 656                 }
 657
 658                 return $data;
 659         }
 660
 661         /**
 662          * @brief Check for valid DFRN data
 663          *
 664          * @param array $data DFRN data
 665          *
 666          * @return int Number of errors
 667          */
 668         public static function validDfrn($data) {
 669                 $errors = 0;
 670                 if (!isset($data['key'])) {
 671                         $errors ++;
 672                 }
 673                 if (!isset($data['dfrn-request'])) {
 674                         $errors ++;
 675                 }
 676                 if (!isset($data['dfrn-confirm'])) {
 677                         $errors ++;
 678                 }
 679                 if (!isset($data['dfrn-notify'])) {
 680                         $errors ++;
 681                 }
 682                 if (!isset($data['dfrn-poll'])) {
 683                         $errors ++;
 684                 }
 685                 return $errors;
 686         }
 687
 688         /**
 689          * @brief Fetch data from a DFRN profile page and via "noscrape"
 690          *
 691          * @param string $profile_link Link to the profile page
 692          *
 693          * @return array profile data
 694          */
 695         public static function profile($profile_link) {
 696
 697                 $data = array();
 698
 699                 logger("Check profile ".$profile_link, LOGGER_DEBUG);
 700
 701                 // Fetch data via noscrape - this is faster
 702                 $noscrape_url = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile_link);
 703                 $data = self::pollNoscrape($noscrape_url, $data);
 704
 705                 if (!isset($data["notify"])
 706                         OR !isset($data["confirm"])
 707                         OR !isset($data["request"])
 708                         OR !isset($data["poll"])
 709                         OR !isset($data["poco"])
 710                         OR !isset($data["name"])
 711                         OR !isset($data["photo"])
 712                 ) {
 713                         $data = self::pollHcard($profile_link, $data, true);
 714                 }
 715
 716                 $prof_data = array();
 717                 $prof_data["addr"]         = $data["addr"];
 718                 $prof_data["nick"]         = $data["nick"];
 719                 $prof_data["dfrn-request"] = $data["request"];
 720                 $prof_data["dfrn-confirm"] = $data["confirm"];
 721                 $prof_data["dfrn-notify"]  = $data["notify"];
 722                 $prof_data["dfrn-poll"]    = $data["poll"];
 723                 $prof_data["dfrn-poco"]    = $data["poco"];
 724                 $prof_data["photo"]        = $data["photo"];
 725                 $prof_data["fn"]           = $data["name"];
 726                 $prof_data["key"]          = $data["pubkey"];
 727
 728                 logger("Result for profile ".$profile_link.": ".print_r($prof_data, true), LOGGER_DEBUG);
 729
 730                 return $prof_data;
 731         }
 732
 733         /**
 734          * @brief Check for DFRN contact
 735          *
 736          * @param array $webfinger Webfinger data
 737          *
 738          * @return array DFRN data
 739          */
 740         private function dfrn($webfinger) {
 741
 742                 $hcard_url = "";
 743                 $data = array();
 744                 foreach ($webfinger["links"] as $link) {
 745                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != "")) {
 746                                 $data["network"] = NETWORK_DFRN;
 747                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 748                                 $data["poll"] = $link["href"];
 749                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 750                                 $data["url"] = $link["href"];
 751                         } elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 752                                 $hcard_url = $link["href"];
 753                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 754                                 $data["poco"] = $link["href"];
 755                         } elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != "")) {
 756                                 $data["photo"] = $link["href"];
 757                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 758                                 $data["baseurl"] = trim($link["href"], '/');
 759                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 760                                 $data["guid"] = $link["href"];
 761                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 762                                 $data["pubkey"] = base64_decode($link["href"]);
 763
 764                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 765                                 if (strstr($data["pubkey"], 'RSA ')) {
 766                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 767                                 }
 768                         }
 769                 }
 770
 771                 if (!isset($data["network"]) OR ($hcard_url == "")) {
 772                         return false;
 773                 }
 774
 775                 // Fetch data via noscrape - this is faster
 776                 $noscrape_url = str_replace("/hcard/", "/noscrape/", $hcard_url);
 777                 $data = self::pollNoscrape($noscrape_url, $data);
 778
 779                 if (isset($data["notify"])
 780                         AND isset($data["confirm"])
 781                         AND isset($data["request"])
 782                         AND isset($data["poll"])
 783                         AND isset($data["name"])
 784                         AND isset($data["photo"])
 785                 ) {
 786                         return $data;
 787                 }
 788
 789                 $data = self::pollHcard($hcard_url, $data, true);
 790
 791                 return $data;
 792         }
 793
 794         /**
 795          * @brief Poll the hcard page (Diaspora and Friendica specific)
 796          *
 797          * @param string $hcard_url Link to the hcard page
 798          * @param array $data The already fetched data
 799          * @param boolean $dfrn Poll DFRN specific data
 800          *
 801          * @return array hcard data
 802          */
 803         private function pollHcard($hcard_url, $data, $dfrn = false) {
 804                 $ret = z_fetch_url($hcard_url);
 805                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 806                         return false;
 807                 }
 808                 $content = $ret['body'];
 809                 if (!$content) {
 810                         return false;
 811                 }
 812
 813                 $doc = new \DOMDocument();
 814                 if (!@$doc->loadHTML($content)) {
 815                         return false;
 816                 }
 817
 818                 $xpath = new \DomXPath($doc);
 819
 820                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 821                 if (!is_object($vcards)) {
 822                         return false;
 823                 }
 824
 825                 if ($vcards->length > 0) {
 826                         $vcard = $vcards->item(0);
 827
 828                         // We have to discard the guid from the hcard in favour of the guid from lrdd
 829                         // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 830                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 831                         if (($search->length > 0) AND ($data["guid"] == "")) {
 832                                 $data["guid"] = $search->item(0)->nodeValue;
 833                         }
 834
 835                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 836                         if ($search->length > 0) {
 837                                 $data["nick"] = $search->item(0)->nodeValue;
 838                         }
 839
 840                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 841                         if ($search->length > 0) {
 842                                 $data["name"] = $search->item(0)->nodeValue;
 843                         }
 844
 845                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 846                         if ($search->length > 0) {
 847                                 $data["searchable"] = $search->item(0)->nodeValue;
 848                         }
 849
 850                         $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 851                         if ($search->length > 0) {
 852                                 $data["pubkey"] = $search->item(0)->nodeValue;
 853                                 if (strstr($data["pubkey"], 'RSA ')) {
 854                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 855                                 }
 856                         }
 857
 858                         $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 859                         if ($search->length > 0) {
 860                                 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 861                         }
 862                 }
 863
 864                 $avatar = array();
 865                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 866                 foreach ($photos as $photo) {
 867                         $attr = array();
 868                         foreach ($photo->attributes as $attribute) {
 869                                 $attr[$attribute->name] = trim($attribute->value);
 870                         }
 871
 872                         if (isset($attr["src"]) AND isset($attr["width"])) {
 873                                 $avatar[$attr["width"]] = $attr["src"];
 874                         }
 875
 876                         // We don't have a width. So we just take everything that we got.
 877                         // This is a Hubzilla workaround which doesn't send a width.
 878                         if ((sizeof($avatar) == 0) AND isset($attr["src"])) {
 879                                 $avatar[] = $attr["src"];
 880                         }
 881                 }
 882
 883                 if (sizeof($avatar)) {
 884                         ksort($avatar);
 885                         $data["photo"] = self::fixAvatar(array_pop($avatar), $data["baseurl"]);
 886                 }
 887
 888                 if ($dfrn) {
 889                         // Poll DFRN specific data
 890                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 891                         if ($search->length > 0) {
 892                                 foreach ($search as $link) {
 893                                         //$data["request"] = $search->item(0)->nodeValue;
 894                                         $attr = array();
 895                                         foreach ($link->attributes as $attribute) {
 896                                                 $attr[$attribute->name] = trim($attribute->value);
 897                                         }
 898
 899                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 900                                 }
 901                         }
 902
 903                         // Older Friendica versions had used the "uid" field differently than newer versions
 904                         if ($data["nick"] == $data["guid"]) {
 905                                 unset($data["guid"]);
 906                         }
 907                 }
 908
 909
 910                 return $data;
 911         }
 912
 913         /**
 914          * @brief Check for Diaspora contact
 915          *
 916          * @param array $webfinger Webfinger data
 917          *
 918          * @return array Diaspora data
 919          */
 920         private function diaspora($webfinger) {
 921
 922                 $hcard_url = "";
 923                 $data = array();
 924                 foreach ($webfinger["links"] as $link) {
 925                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != "")) {
 926                                 $hcard_url = $link["href"];
 927                         } elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != "")) {
 928                                 $data["baseurl"] = trim($link["href"], '/');
 929                         } elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != "")) {
 930                                 $data["guid"] = $link["href"];
 931                         } elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND ($link["type"] == "text/html") AND ($link["href"] != "")) {
 932                                 $data["url"] = $link["href"];
 933                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
 934                                 $data["poll"] = $link["href"];
 935                         } elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != "")) {
 936                                 $data["poco"] = $link["href"];
 937                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
 938                                 $data["notify"] = $link["href"];
 939                         } elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 940                                 $data["pubkey"] = base64_decode($link["href"]);
 941
 942                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 943                                 if (strstr($data["pubkey"], 'RSA ')) {
 944                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 945                                 }
 946                         }
 947                 }
 948
 949                 if (!isset($data["url"]) OR ($hcard_url == "")) {
 950                         return false;
 951                 }
 952
 953                 if (is_array($webfinger["aliases"])) {
 954                         foreach ($webfinger["aliases"] as $alias) {
 955                                 if (normalise_link($alias) != normalise_link($data["url"]) AND ! strstr($alias, "@")) {
 956                                         $data["alias"] = $alias;
 957                                 }
 958                         }
 959                 }
 960
 961                 // Fetch further information from the hcard
 962                 $data = self::pollHcard($hcard_url, $data);
 963
 964                 if (!$data) {
 965                         return false;
 966                 }
 967
 968                 if (isset($data["url"])
 969                         AND isset($data["guid"])
 970                         AND isset($data["baseurl"])
 971                         AND isset($data["pubkey"])
 972                         AND ($hcard_url != "")
 973                 ) {
 974                         $data["network"] = NETWORK_DIASPORA;
 975
 976                         // The Diaspora handle must always be lowercase
 977                         $data["addr"] = strtolower($data["addr"]);
 978
 979                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 980                         $data["notify"] = $data["baseurl"] . "/receive/users/" . $data["guid"];
 981                         $data["batch"]  = $data["baseurl"] . "/receive/public";
 982                 } else {
 983                         return false;
 984                 }
 985
 986                 return $data;
 987         }
 988
 989         /**
 990          * @brief Check for OStatus contact
 991          *
 992          * @param array $webfinger Webfinger data
 993          *
 994          * @return array OStatus data
 995          */
 996         private function ostatus($webfinger) {
 997                 $data = array();
 998                 if (is_array($webfinger["aliases"])) {
 999                         foreach ($webfinger["aliases"] as $alias) {
1000                                 if (strstr($alias, "@")) {
1001                                         $data["addr"] = str_replace('acct:', '', $alias);
1002                                 }
1003                         }
1004                 }
1005
1006                 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@")) {
1007                         $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
1008                 }
1009                 $pubkey = "";
1010                 foreach ($webfinger["links"] as $link) {
1011                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1012                                 AND ($link["type"] == "text/html")
1013                                 AND ($link["href"] != "")
1014                         ) {
1015                                 $data["url"] = $link["href"];
1016                         } elseif (($link["rel"] == "salmon") AND ($link["href"] != "")) {
1017                                 $data["notify"] = $link["href"];
1018                         } elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != "")) {
1019                                 $data["poll"] = $link["href"];
1020                         } elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
1021                                 $pubkey = $link["href"];
1022
1023                                 if (substr($pubkey, 0, 5) === 'data:') {
1024                                         if (strstr($pubkey, ',')) {
1025                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
1026                                         } else {
1027                                                 $pubkey = substr($pubkey, 5);
1028                                         }
1029                                 } elseif (normalise_link($pubkey) == 'http://') {
1030                                         $ret = z_fetch_url($pubkey);
1031                                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1032                                                 return false;
1033                                         }
1034                                         $pubkey = $ret['body'];
1035                                 }
1036
1037                                 $key = explode(".", $pubkey);
1038
1039                                 if (sizeof($key) >= 3) {
1040                                         $m = base64url_decode($key[1]);
1041                                         $e = base64url_decode($key[2]);
1042                                         $data["pubkey"] = metopem($m, $e);
1043                                 }
1044                         }
1045                 }
1046
1047                 if (isset($data["notify"]) AND isset($data["pubkey"])
1048                         AND isset($data["poll"])
1049                         AND isset($data["url"])
1050                 ) {
1051                         $data["network"] = NETWORK_OSTATUS;
1052                 } else {
1053                         return false;
1054                 }
1055                 // Fetch all additional data from the feed
1056                 $ret = z_fetch_url($data["poll"]);
1057                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1058                         return false;
1059                 }
1060                 $feed = $ret['body'];
1061                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1062                 if (!$feed_data) {
1063                         return false;
1064                 }
1065                 if ($feed_data["header"]["author-name"] != "") {
1066                         $data["name"] = $feed_data["header"]["author-name"];
1067                 }
1068                 if ($feed_data["header"]["author-nick"] != "") {
1069                         $data["nick"] = $feed_data["header"]["author-nick"];
1070                 }
1071                 if ($feed_data["header"]["author-avatar"] != "") {
1072                         $data["photo"] = self::fixAvatar($feed_data["header"]["author-avatar"], $data["url"]);
1073                 }
1074                 if ($feed_data["header"]["author-id"] != "") {
1075                         $data["alias"] = $feed_data["header"]["author-id"];
1076                 }
1077                 if ($feed_data["header"]["author-location"] != "") {
1078                         $data["location"] = $feed_data["header"]["author-location"];
1079                 }
1080                 if ($feed_data["header"]["author-about"] != "") {
1081                         $data["about"] = $feed_data["header"]["author-about"];
1082                 }
1083                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
1084                 // So we take the value that we just fetched, although the other one worked as well
1085                 if ($feed_data["header"]["author-link"] != "") {
1086                         $data["url"] = $feed_data["header"]["author-link"];
1087                 }
1088                 /// @todo Fetch location and "about" from the feed as well
1089                 return $data;
1090         }
1091
1092         /**
1093          * @brief Fetch data from a pump.io profile page
1094          *
1095          * @param string $profile_link Link to the profile page
1096          *
1097          * @return array profile data
1098          */
1099         private function pumpioProfileData($profile_link) {
1100
1101                 $doc = new \DOMDocument();
1102                 if (!@$doc->loadHTMLFile($profile_link)) {
1103                         return false;
1104                 }
1105
1106                 $xpath = new \DomXPath($doc);
1107
1108                 $data = array();
1109
1110                 // This is ugly - but pump.io doesn't seem to know a better way for it
1111                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
1112                 $pos = strpos($data["name"], chr(10));
1113                 if ($pos) {
1114                         $data["name"] = trim(substr($data["name"], 0, $pos));
1115                 }
1116
1117                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
1118                 if ($avatar) {
1119                         foreach ($avatar->attributes as $attribute) {
1120                                 if ($attribute->name == "src") {
1121                                         $data["photo"] = trim($attribute->value);
1122                                 }
1123                         }
1124                 }
1125
1126                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
1127                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
1128
1129                 return $data;
1130         }
1131
1132         /**
1133          * @brief Check for pump.io contact
1134          *
1135          * @param array $webfinger Webfinger data
1136          *
1137          * @return array pump.io data
1138          */
1139         private function pumpio($webfinger) {
1140
1141                 $data = array();
1142                 foreach ($webfinger["links"] as $link) {
1143                         if (($link["rel"] == "http://webfinger.net/rel/profile-page")
1144                                 AND ($link["type"] == "text/html")
1145                                 AND ($link["href"] != "")
1146                         ) {
1147                                 $data["url"] = $link["href"];
1148                         } elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != "")) {
1149                                 $data["notify"] = $link["href"];
1150                         } elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != "")) {
1151                                 $data["poll"] = $link["href"];
1152                         } elseif (($link["rel"] == "dialback") AND ($link["href"] != "")) {
1153                                 $data["dialback"] = $link["href"];
1154                         }
1155                 }
1156                 if (isset($data["poll"]) AND isset($data["notify"])
1157                         AND isset($data["dialback"])
1158                         AND isset($data["url"])
1159                 ) {
1160                         // by now we use these fields only for the network type detection
1161                         // So we unset all data that isn't used at the moment
1162                         unset($data["dialback"]);
1163
1164                         $data["network"] = NETWORK_PUMPIO;
1165                 } else {
1166                         return false;
1167                 }
1168
1169                 $profile_data = self::pumpioProfileData($data["url"]);
1170
1171                 if (!$profile_data) {
1172                         return false;
1173                 }
1174
1175                 $data = array_merge($data, $profile_data);
1176
1177                 return $data;
1178         }
1179
1180         /**
1181          * @brief Check page for feed link
1182          *
1183          * @param string $url Page link
1184          *
1185          * @return string feed link
1186          */
1187         private function getFeedLink($url) {
1188                 $doc = new \DOMDocument();
1189
1190                 if (!@$doc->loadHTMLFile($url)) {
1191                         return false;
1192                 }
1193
1194                 $xpath = new \DomXPath($doc);
1195
1196                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
1197                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
1198                 if (!is_object($feeds)) {
1199                         return false;
1200                 }
1201
1202                 if ($feeds->length == 0) {
1203                         return false;
1204                 }
1205
1206                 $feed_url = "";
1207
1208                 foreach ($feeds as $feed) {
1209                         $attr = array();
1210                         foreach ($feed->attributes as $attribute) {
1211                                 $attr[$attribute->name] = trim($attribute->value);
1212                         }
1213
1214                         if ($feed_url == "") {
1215                                 $feed_url = $attr["href"];
1216                         }
1217                 }
1218
1219                 return $feed_url;
1220         }
1221
1222         /**
1223          * @brief Check for feed contact
1224          *
1225          * @param string $url Profile link
1226          * @param boolean $probe Do a probe if the page contains a feed link
1227          *
1228          * @return array feed data
1229          */
1230         private function feed($url, $probe = true) {
1231                 $ret = z_fetch_url($url);
1232                 if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
1233                         return false;
1234                 }
1235                 $feed = $ret['body'];
1236                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1237
1238                 if (!$feed_data) {
1239                         if (!$probe) {
1240                                 return false;
1241                         }
1242
1243                         $feed_url = self::getFeedLink($url);
1244
1245                         if (!$feed_url) {
1246                                 return false;
1247                         }
1248
1249                         return self::feed($feed_url, false);
1250                 }
1251
1252                 if ($feed_data["header"]["author-name"] != "") {
1253                         $data["name"] = $feed_data["header"]["author-name"];
1254                 }
1255
1256                 if ($feed_data["header"]["author-nick"] != "") {
1257                         $data["nick"] = $feed_data["header"]["author-nick"];
1258                 }
1259
1260                 if ($feed_data["header"]["author-avatar"] != "") {
1261                         $data["photo"] = $feed_data["header"]["author-avatar"];
1262                 }
1263
1264                 if ($feed_data["header"]["author-id"] != "") {
1265                         $data["alias"] = $feed_data["header"]["author-id"];
1266                 }
1267
1268                 $data["url"] = $url;
1269                 $data["poll"] = $url;
1270
1271                 if ($feed_data["header"]["author-link"] != "") {
1272                         $data["baseurl"] = $feed_data["header"]["author-link"];
1273                 } else {
1274                         $data["baseurl"] = $data["url"];
1275                 }
1276
1277                 $data["network"] = NETWORK_FEED;
1278
1279                 return $data;
1280         }
1281
1282         /**
1283          * @brief Check for mail contact
1284          *
1285          * @param string $uri Profile link
1286          * @param integer $uid User ID
1287          *
1288          * @return array mail data
1289          */
1290         private function mail($uri, $uid) {
1291
1292                 if (!validate_email($uri)) {
1293                         return false;
1294                 }
1295
1296                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1297
1298                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1299
1300                 if (\dbm::is_result($x) && \dbm::is_result($r)) {
1301                         $mailbox = construct_mailbox_name($r[0]);
1302                         $password = '';
1303                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password, $x[0]['prvkey']);
1304                         $mbox = email_connect($mailbox, $r[0]['user'], $password);
1305                         if (!mbox) {
1306                                 return false;
1307                         }
1308                 }
1309
1310                 $msgs = email_poll($mbox, $uri);
1311                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1312
1313                 if (!count($msgs)) {
1314                         return false;
1315                 }
1316
1317                 $phost = substr($uri, strpos($uri, '@') + 1);
1318
1319                 $data = array();
1320                 $data["addr"]    = $uri;
1321                 $data["network"] = NETWORK_MAIL;
1322                 $data["name"]    = substr($uri, 0, strpos($uri, '@'));
1323                 $data["nick"]    = $data["name"];
1324                 $data["photo"]   = avatar_img($uri);
1325                 $data["url"]     = 'http://'.$phost."/".$data["nick"];
1326                 $data["notify"]  = 'smtp '.random_string();
1327                 $data["poll"]    = 'email '.random_string();
1328
1329                 $x = email_msg_meta($mbox, $msgs[0]);
1330                 if (stristr($x[0]->from, $uri)) {
1331                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1332                 } elseif (stristr($x[0]->to, $uri)) {
1333                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1334                 }
1335                 if (isset($adr)) {
1336                         foreach ($adr as $feadr) {
1337                                 if ((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1338                                         &&(strcasecmp($feadr->host, $phost) == 0)
1339                                         && (strlen($feadr->personal))
1340                                 ) {
1341                                         $personal = imap_mime_header_decode($feadr->personal);
1342                                         $data["name"] = "";
1343                                         foreach ($personal as $perspart) {
1344                                                 if ($perspart->charset != "default") {
1345                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1346                                                 } else {
1347                                                         $data["name"] .= $perspart->text;
1348                                                 }
1349                                         }
1350
1351                                         $data["name"] = notags($data["name"]);
1352                                 }
1353                         }
1354                 }
1355                 imap_close($mbox);
1356
1357                 return $data;
1358         }
1359
1360         /**
1361          * @brief Mix two paths together to possibly fix missing parts
1362          *
1363          * @param string $avatar Path to the avatar
1364          * @param string $base Another path that is hopefully complete
1365          *
1366          * @return string fixed avatar path
1367          */
1368         public static function fixAvatar($avatar, $base) {
1369                 $base_parts = parse_url($base);
1370
1371                 // Remove all parts that could create a problem
1372                 unset($base_parts['path']);
1373                 unset($base_parts['query']);
1374                 unset($base_parts['fragment']);
1375
1376                 $avatar_parts = parse_url($avatar);
1377
1378                 // Now we mix them
1379                 $parts = array_merge($base_parts, $avatar_parts);
1380
1381                 // And put them together again
1382                 $scheme   = isset($parts['scheme'])   ? $parts['scheme'] . '://' : '';
1383                 $host     = isset($parts['host'])     ? $parts['host']           : '';
1384                 $port     = isset($parts['port'])     ? ':' . $parts['port']     : '';
1385                 $path     = isset($parts['path'])     ? $parts['path']           : '';
1386                 $query    = isset($parts['query'])    ? '?' . $parts['query']    : '';
1387                 $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
1388
1389                 $fixed = $scheme.$host.$port.$path.$query.$fragment;
1390
1391                 logger('Base: '.$base.' - Avatar: '.$avatar.' - Fixed: '.$fixed, LOGGER_DATA);
1392
1393                 return $fixed;
1394         }
1395 }