include/Probe.php

   1 <?php
   2 /**
   3  * @brief This class contain functions for probing URL
   4  *
   5  */
   6
   7 use \Friendica\Core\Config;
   8 use \Friendica\Core\PConfig;
   9
  10 require_once("include/feed.php");
  11 require_once('include/email.php');
  12 require_once('include/network.php');
  13
  14 class Probe {
  15
  16         private function rearrange_data($data) {
  17                 $fields = array("name", "nick", "guid", "url", "addr", "alias",
  18                                 "photo", "community", "keywords", "location", "about",
  19                                 "batch", "notify", "poll", "request", "confirm", "poco",
  20                                 "priority", "network", "pubkey", "baseurl");
  21
  22                 $newdata = array();
  23                 foreach ($fields AS $field)
  24                         if (isset($data[$field]))
  25                                 $newdata[$field] = $data[$field];
  26                         else
  27                                 $newdata[$field] = "";
  28
  29                 // We don't use the "priority" field anymore and replace it with a dummy.
  30                 $newdata["priority"] = 0;
  31
  32                 return $newdata;
  33         }
  34
  35         /**
  36          * @brief Probes for XRD data
  37          *
  38          * @return array
  39          *      'lrdd' => Link to LRDD endpoint
  40          *      'lrdd-xml' => Link to LRDD endpoint in XML format
  41          *      'lrdd-json' => Link to LRDD endpoint in JSON format
  42          */
  43         private function xrd($host) {
  44
  45                 $ssl_url = "https://".$host."/.well-known/host-meta";
  46                 $url = "http://".$host."/.well-known/host-meta";
  47
  48                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
  49                 $redirects = 0;
  50
  51                 $xml = fetch_url($ssl_url, false, $redirects, $xrd_timeout, "application/xrd+xml");
  52                 $xrd = parse_xml_string($xml, false);
  53
  54                 if (!is_object($xrd)) {
  55                         $xml = fetch_url($url, false, $redirects, $xrd_timeout, "application/xrd+xml");
  56                         $xrd = parse_xml_string($xml, false);
  57                 }
  58                 if (!is_object($xrd))
  59                         return false;
  60
  61                 $links = xml::element_to_array($xrd);
  62                 if (!isset($links["xrd"]["link"]))
  63                         return false;
  64
  65                 $xrd_data = array();
  66                 foreach ($links["xrd"]["link"] AS $value => $link) {
  67                         if (isset($link["@attributes"]))
  68                                 $attributes = $link["@attributes"];
  69                         elseif ($value == "@attributes")
  70                                 $attributes = $link;
  71                         else
  72                                 continue;
  73
  74                         if (($attributes["rel"] == "lrdd") AND
  75                                 ($attributes["type"] == "application/xrd+xml"))
  76                                 $xrd_data["lrdd-xml"] = $attributes["template"];
  77                         elseif (($attributes["rel"] == "lrdd") AND
  78                                 ($attributes["type"] == "application/json"))
  79                                 $xrd_data["lrdd-json"] = $attributes["template"];
  80                         elseif ($attributes["rel"] == "lrdd")
  81                                 $xrd_data["lrdd"] = $attributes["template"];
  82                 }
  83                 return $xrd_data;
  84         }
  85
  86         public static function uri($uri, $network = "", $uid = 0, $cache = true) {
  87
  88                 if ($cache) {
  89                         $result = Cache::get("probe_url:".$network.":".$uri);
  90                         if (!is_null($result)) {
  91                                 $result = unserialize($result);
  92                                 return $result;
  93                         }
  94                 }
  95
  96                 if ($uid == 0)
  97                         $uid = local_user();
  98
  99                 $data = self::detect($uri, $network, $uid);
 100
 101                 if (!isset($data["url"]))
 102                         $data["url"] = $uri;
 103
 104                 if ($data["photo"] != "")
 105                         $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
 106                 else
 107                         $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
 108
 109                 if (!isset($data["name"]))
 110                         $data["name"] = $data["url"];
 111
 112                 if (!isset($data["nick"]))
 113                         $data["nick"] = strtolower($data["name"]);
 114
 115                 if (!isset($data["network"]))
 116                         $data["network"] = NETWORK_PHANTOM;
 117
 118                 $data = self::rearrange_data($data);
 119
 120                 // Only store into the cache if the value seems to be valid
 121                 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
 122                         Cache::set("probe_url:".$network.":".$uri,serialize($data), CACHE_DAY);
 123
 124                         /// @todo temporary fix - we need a real contact update function that updates only changing fields
 125                         /// The biggest problem is the avatar picture that could have a reduced image size.
 126                         /// It should only be updated if the existing picture isn't existing anymore.
 127                         if (($data['network'] != NETWORK_FEED) AND ($mode == PROBE_NORMAL) AND
 128                                 $data["name"] AND $data["nick"] AND $data["url"] AND $data["addr"] AND $data["poll"])
 129                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
 130                                                 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
 131                                         WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
 132                                         dbesc($data["name"]),
 133                                         dbesc($data["nick"]),
 134                                         dbesc($data["url"]),
 135                                         dbesc($data["addr"]),
 136                                         dbesc($data["notify"]),
 137                                         dbesc($data["poll"]),
 138                                         dbesc($data["alias"]),
 139                                         dbesc(datetime_convert()),
 140                                         dbesc(normalise_link($data['url']))
 141                         );
 142                 }
 143                 return $data;
 144         }
 145
 146         private function detect($uri, $network, $uid) {
 147                 if (strstr($uri, '@')) {
 148                         // If the URI starts with "mailto:" then jum directly to the mail detection
 149                         if (strpos($url,'mailto:') !== false) {
 150                                 $uri = str_replace('mailto:', '', $url);
 151                                 return self::mail($uri, $uid);
 152                         }
 153
 154                         if ($network == NETWORK_MAIL)
 155                                 return self::mail($uri, $uid);
 156
 157                         // Remove "acct:" from the URI
 158                         $uri = str_replace('acct:', '', $uri);
 159
 160                         $host = substr($uri,strpos($uri, '@') + 1);
 161                         $nick = substr($uri,0, strpos($uri, '@'));
 162
 163                         $lrdd = self::xrd($host);
 164                         if (!$lrdd)
 165                                 return self::mail($uri, $uid);
 166
 167                         $addr = $uri;
 168                 } else {
 169                         $parts = parse_url($uri);
 170                         if (!isset($parts["scheme"]) OR
 171                                 !isset($parts["host"]) OR
 172                                 !isset($parts["path"]))
 173                                 return false;
 174
 175                         // todo: Ports?
 176                         $host = $parts["host"];
 177                         $lrdd = self::xrd($host);
 178
 179                         $path_parts = explode("/", trim($parts["path"], "/"));
 180
 181                         while (!$lrdd AND (sizeof($path_parts) > 1)) {
 182                                 $host .= "/".array_shift($path_parts);
 183                                 $lrdd = self::xrd($host);
 184                         }
 185                         if (!$lrdd)
 186                                 return self::feed($uri);
 187
 188                         $nick = array_pop($path_parts);
 189                         $addr = $nick."@".$host;
 190                 }
 191
 192                 $webfinger = false;
 193
 194                 /// @todo Do we need the prefix "acct:" or "acct://"?
 195
 196                 foreach ($lrdd AS $key => $link) {
 197                         if ($webfinger)
 198                                 continue;
 199
 200                         if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
 201                                 continue;
 202
 203                         $path = str_replace('{uri}', urlencode($addr), $link);
 204
 205                         $webfinger = self::webfinger($path);
 206                 }
 207                 if (!$webfinger)
 208                         return self::feed($uri);
 209
 210                 $result = false;
 211
 212                 logger("Probing ".$uri, LOGGER_DEBUG);
 213
 214                 if (in_array($network, array("", NETWORK_DFRN)))
 215                         $result = self::dfrn($webfinger);
 216                 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA))
 217                         $result = self::diaspora($webfinger);
 218                 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS))
 219                         $result = self::ostatus($webfinger);
 220                 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO))
 221                         $result = self::pumpio($webfinger);
 222                 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED))
 223                         $result = self::feed($uri);
 224                 else {
 225                         // We overwrite the detected nick with our try if the previois routines hadn't detected it.
 226                         // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
 227                         if (!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " ")))
 228                                 $result["nick"] = $nick;
 229
 230                         if (!isset($result["addr"]) OR ($result["addr"] == ""))
 231                                 $result["addr"] = $addr;
 232                 }
 233
 234                 logger($uri." is ".$result["network"], LOGGER_DEBUG);
 235
 236                 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
 237                         $pos = strpos($result["url"], $host);
 238                         if ($pos)
 239                                 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
 240                 }
 241
 242                 return $result;
 243         }
 244
 245         private function webfinger($url) {
 246
 247                 $xrd_timeout = Config::get('system','xrd_timeout', 20);
 248                 $redirects = 0;
 249
 250                 $data = fetch_url($url, false, $redirects, $xrd_timeout, "application/xrd+xml");
 251                 $xrd = parse_xml_string($data, false);
 252
 253                 if (!is_object($xrd)) {
 254                         // If it is not XML, maybe it is JSON
 255                         $webfinger = json_decode($data, true);
 256
 257                         if (!isset($webfinger["links"]))
 258                                 return false;
 259
 260                         return $webfinger;
 261                 }
 262
 263                 $xrd_arr = xml::element_to_array($xrd);
 264                 if (!isset($xrd_arr["xrd"]["link"]))
 265                         return false;
 266
 267                 $webfinger = array();
 268
 269                 if (isset($xrd_arr["xrd"]["subject"]))
 270                         $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
 271
 272                 if (isset($xrd_arr["xrd"]["alias"]))
 273                         $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
 274
 275                 $webfinger["links"] = array();
 276
 277                 foreach ($xrd_arr["xrd"]["link"] AS $value => $data) {
 278                         if (isset($data["@attributes"]))
 279                                 $attributes = $data["@attributes"];
 280                         elseif ($value == "@attributes")
 281                                 $attributes = $data;
 282                         else
 283                                 continue;
 284
 285                         $webfinger["links"][] = $attributes;
 286                 }
 287                 return $webfinger;
 288         }
 289
 290         private function poll_noscrape($noscrape, $data) {
 291                 $content = fetch_url($noscrape);
 292                 if (!$content)
 293                         return false;
 294
 295                 $json = json_decode($content, true);
 296                 if (!is_array($json))
 297                         return false;
 298
 299                 if (isset($json["fn"]))
 300                         $data["name"] = $json["fn"];
 301
 302                 if (isset($json["addr"]))
 303                         $data["addr"] = $json["addr"];
 304
 305                 if (isset($json["nick"]))
 306                         $data["nick"] = $json["nick"];
 307
 308                 if (isset($json["comm"]))
 309                         $data["community"] = $json["comm"];
 310
 311                 if (isset($json["tags"])) {
 312                         $keywords = implode(" ", $json["tags"]);
 313                         if ($keywords != "")
 314                                 $data["keywords"] = $keywords;
 315                 }
 316
 317                 $location = formatted_location($json);
 318                 if ($location)
 319                         $data["location"] = $location;
 320
 321                 if (isset($json["about"]))
 322                         $data["about"] = $json["about"];
 323
 324                 if (isset($json["key"]))
 325                         $data["pubkey"] = $json["key"];
 326
 327                 if (isset($json["photo"]))
 328                         $data["photo"] = $json["photo"];
 329
 330                 if (isset($json["dfrn-request"]))
 331                         $data["request"] = $json["dfrn-request"];
 332
 333                 if (isset($json["dfrn-confirm"]))
 334                         $data["confirm"] = $json["dfrn-confirm"];
 335
 336                 if (isset($json["dfrn-notify"]))
 337                         $data["notify"] = $json["dfrn-notify"];
 338
 339                 if (isset($json["dfrn-poll"]))
 340                         $data["poll"] = $json["dfrn-poll"];
 341
 342                 return $data;
 343         }
 344
 345         public static function valid_dfrn($data) {
 346                 $errors = 0;
 347                 if(!isset($data['key']))
 348                         $errors ++;
 349                 if(!isset($data['dfrn-request']))
 350                         $errors ++;
 351                 if(!isset($data['dfrn-confirm']))
 352                         $errors ++;
 353                 if(!isset($data['dfrn-notify']))
 354                         $errors ++;
 355                 if(!isset($data['dfrn-poll']))
 356                         $errors ++;
 357                 return $errors;
 358         }
 359
 360         public static function profile($profile) {
 361
 362                 $data = array();
 363
 364                 // Fetch data via noscrape - this is faster
 365                 $noscrape = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile);
 366                 $data = self::poll_noscrape($noscrape, $data);
 367
 368                 if (!isset($data["notify"]) OR !isset($data["confirm"]) OR
 369                         !isset($data["request"]) OR !isset($data["poll"]) OR
 370                         !isset($data["poco"]) OR !isset($data["name"]) OR
 371                         !isset($data["photo"]))
 372                         $data = self::poll_hcard($profile, $data, true);
 373
 374                 $prof_data = array();
 375                 $prof_data["addr"] = $data["addr"];
 376                 $prof_data["nick"] = $data["nick"];
 377                 $prof_data["dfrn-request"] = $data["request"];
 378                 $prof_data["dfrn-confirm"] = $data["confirm"];
 379                 $prof_data["dfrn-notify"] = $data["notify"];
 380                 $prof_data["dfrn-poll"] = $data["poll"];
 381                 $prof_data["dfrn-poco"] = $data["poco"];
 382                 $prof_data["photo"] = $data["photo"];
 383                 $prof_data["fn"] = $data["name"];
 384                 $prof_data["key"] = $data["pubkey"];
 385
 386                 return $prof_data;
 387         }
 388
 389         private function dfrn($webfinger) {
 390
 391                 $hcard = "";
 392                 $data = array();
 393                 foreach ($webfinger["links"] AS $link) {
 394                         if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != ""))
 395                                 $data["network"] = NETWORK_DFRN;
 396                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 397                                 $data["poll"] = $link["href"];
 398                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 399                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 400                                 $data["url"] = $link["href"];
 401                         elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 402                                 $hcard = $link["href"];
 403                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 404                                 $data["poco"] = $link["href"];
 405                         elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != ""))
 406                                 $data["photo"] = $link["href"];
 407
 408                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 409                                 $data["baseurl"] = trim($link["href"], '/');
 410                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 411                                 $data["guid"] = $link["href"];
 412                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 413                                 $data["pubkey"] = base64_decode($link["href"]);
 414
 415                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 416                                 if (strstr($data["pubkey"], 'RSA '))
 417                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 418                         }
 419                 }
 420
 421                 if (!isset($data["network"]) OR ($hcard == ""))
 422                         return false;
 423
 424                 // Fetch data via noscrape - this is faster
 425                 $noscrape = str_replace("/hcard/", "/noscrape/", $hcard);
 426                 $data = self::poll_noscrape($noscrape, $data);
 427
 428                 if (isset($data["notify"]) AND isset($data["confirm"]) AND isset($data["request"]) AND
 429                         isset($data["poll"]) AND isset($data["name"]) AND isset($data["photo"]))
 430                         return $data;
 431
 432                 $data = self::poll_hcard($hcard, $data, true);
 433
 434                 return $data;
 435         }
 436
 437         private function poll_hcard($hcard, $data, $dfrn = false) {
 438
 439                 $doc = new DOMDocument();
 440                 if (!@$doc->loadHTMLFile($hcard))
 441                         return false;
 442
 443                 $xpath = new DomXPath($doc);
 444
 445                 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
 446                 if (!is_object($vcards))
 447                         return false;
 448
 449                 if ($vcards->length == 0)
 450                         return false;
 451
 452                 $vcard = $vcards->item(0);
 453
 454                 // We have to discard the guid from the hcard in favour of the guid from lrdd
 455                 // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
 456                 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
 457                 if (($search->length > 0) AND ($data["guid"] == ""))
 458                         $data["guid"] = $search->item(0)->nodeValue;
 459
 460                 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
 461                 if ($search->length > 0)
 462                         $data["nick"] = $search->item(0)->nodeValue;
 463
 464                 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
 465                 if ($search->length > 0)
 466                         $data["name"] = $search->item(0)->nodeValue;
 467
 468                 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
 469                 if ($search->length > 0)
 470                         $data["searchable"] = $search->item(0)->nodeValue;
 471
 472                 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
 473                 if ($search->length > 0) {
 474                         $data["pubkey"] = $search->item(0)->nodeValue;
 475                         if (strstr($data["pubkey"], 'RSA '))
 476                                 $data["pubkey"] = rsatopem($data["pubkey"]);
 477                 }
 478
 479                 $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
 480                 if ($search->length > 0)
 481                         $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
 482
 483                 $avatar = array();
 484                 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
 485                 foreach ($photos AS $photo) {
 486                         $attr = array();
 487                         foreach ($photo->attributes as $attribute)
 488                                 $attr[$attribute->name] = trim($attribute->value);
 489
 490                         if (isset($attr["src"]) AND isset($attr["width"]))
 491                                 $avatar[$attr["width"]] = $attr["src"];
 492                 }
 493
 494                 if (sizeof($avatar)) {
 495                         ksort($avatar);
 496                         $data["photo"] = array_pop($avatar);
 497                 }
 498
 499                 if ($dfrn) {
 500                         // Poll DFRN specific data
 501                         $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
 502                         if ($search->length > 0) {
 503                                 foreach ($search AS $link) {
 504                                         //$data["request"] = $search->item(0)->nodeValue;
 505                                         $attr = array();
 506                                         foreach ($link->attributes as $attribute)
 507                                                 $attr[$attribute->name] = trim($attribute->value);
 508
 509                                         $data[substr($attr["rel"], 5)] = $attr["href"];
 510                                 }
 511                         }
 512
 513                         // Older Friendica versions had used the "uid" field differently than newer versions
 514                         if ($data["nick"] == $data["guid"])
 515                                 unset($data["guid"]);
 516                 }
 517
 518
 519                 return $data;
 520         }
 521
 522         private function diaspora($webfinger) {
 523
 524                 $hcard = "";
 525                 $data = array();
 526                 foreach ($webfinger["links"] AS $link) {
 527                         if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
 528                                 $hcard = $link["href"];
 529                         elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
 530                                 $data["baseurl"] = trim($link["href"], '/');
 531                         elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
 532                                 $data["guid"] = $link["href"];
 533                         elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 534                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 535                                 $data["url"] = $link["href"];
 536                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 537                                 $data["poll"] = $link["href"];
 538                         elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
 539                                 $data["poco"] = $link["href"];
 540                         elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
 541                                 $data["notify"] = $link["href"];
 542                         elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
 543                                 $data["pubkey"] = base64_decode($link["href"]);
 544
 545                                 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
 546                                 if (strstr($data["pubkey"], 'RSA '))
 547                                         $data["pubkey"] = rsatopem($data["pubkey"]);
 548                         }
 549                 }
 550
 551                 if (!isset($data["url"]) OR ($hcard == ""))
 552                         return false;
 553
 554                 if (is_array($webfinger["aliases"]))
 555                         foreach ($webfinger["aliases"] AS $alias)
 556                                 if (normalise_link($alias) != normalise_link($data["url"]) AND !strstr($alias, "@"))
 557                                         $data["alias"] = $alias;
 558
 559                 // Fetch further information from the hcard
 560                 $data = self::poll_hcard($hcard, $data);
 561
 562                 if (!$data)
 563                         return false;
 564
 565                 if (isset($data["url"]) AND isset($data["guid"]) AND isset($data["baseurl"]) AND
 566                         isset($data["pubkey"]) AND ($hcard != "")) {
 567                         $data["network"] = NETWORK_DIASPORA;
 568
 569                         // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
 570                         $data["notify"] = $data["baseurl"]."/receive/users/".$data["guid"];
 571                         $data["batch"] = $data["baseurl"]."/receive/public";
 572                 } else
 573                         return false;
 574
 575                 return $data;
 576         }
 577
 578         private function ostatus($webfinger) {
 579
 580                 $pubkey = "";
 581                 $data = array();
 582                 foreach ($webfinger["links"] AS $link) {
 583                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 584                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 585                                 $data["url"] = $link["href"];
 586                         elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
 587                                 $data["notify"] = $link["href"];
 588                         elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
 589                                 $data["poll"] = $link["href"];
 590                         elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
 591                                 $pubkey = $link["href"];
 592
 593                                 if (substr($pubkey, 0, 5) === 'data:') {
 594                                         if (strstr($pubkey, ','))
 595                                                 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
 596                                         else
 597                                                 $pubkey = substr($pubkey, 5);
 598                                 } else
 599                                         $pubkey = fetch_url($pubkey);
 600
 601                                 $key = explode(".", $pubkey);
 602
 603                                 if (sizeof($key) >= 3) {
 604                                         $m = base64url_decode($key[1]);
 605                                         $e = base64url_decode($key[2]);
 606                                         $data["pubkey"] = metopem($m,$e);
 607                                 }
 608
 609                         }
 610                 }
 611
 612                 if (isset($data["notify"]) AND isset($data["pubkey"]) AND
 613                         isset($data["poll"]) AND isset($data["url"])) {
 614                         $data["network"] = NETWORK_OSTATUS;
 615                 } else
 616                         return false;
 617
 618                 // Fetch all additional data from the feed
 619                 $feed = fetch_url($data["poll"]);
 620                 $feed_data = feed_import($feed,$dummy1,$dummy2, $dummy3, true);
 621                 if (!$feed_data)
 622                         return false;
 623
 624                 if ($feed_data["header"]["author-name"] != "")
 625                         $data["name"] = $feed_data["header"]["author-name"];
 626
 627                 if ($feed_data["header"]["author-nick"] != "")
 628                         $data["nick"] = $feed_data["header"]["author-nick"];
 629
 630                 if ($feed_data["header"]["author-avatar"] != "")
 631                         $data["photo"] = $feed_data["header"]["author-avatar"];
 632
 633                 if ($feed_data["header"]["author-id"] != "")
 634                         $data["alias"] = $feed_data["header"]["author-id"];
 635
 636                 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
 637                 // So we take the value that we just fetched, although the other one worked as well
 638                 if ($feed_data["header"]["author-link"] != "")
 639                         $data["url"] = $feed_data["header"]["author-link"];
 640
 641                 /// @todo Fetch location and "about" from the feed as well
 642                 return $data;
 643         }
 644
 645         private function pumpio_profile_data($profile) {
 646
 647                 $doc = new DOMDocument();
 648                 if (!@$doc->loadHTMLFile($profile))
 649                         return false;
 650
 651                 $xpath = new DomXPath($doc);
 652
 653                 $data = array();
 654
 655                 // This is ugly - but pump.io doesn't seem to know a better way for it
 656                 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
 657                 $pos = strpos($data["name"], chr(10));
 658                 if ($pos)
 659                         $data["name"] = trim(substr($data["name"], 0, $pos));
 660
 661                 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
 662                 if ($avatar)
 663                         foreach ($avatar->attributes as $attribute)
 664                                 if ($attribute->name == "src")
 665                                         $data["photo"] = trim($attribute->value);
 666
 667                 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
 668                 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
 669
 670                 return $data;
 671         }
 672
 673         private function pumpio($webfinger) {
 674                 $data = array();
 675                 foreach ($webfinger["links"] AS $link) {
 676                         if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
 677                                 ($link["type"] == "text/html") AND ($link["href"] != ""))
 678                                 $data["url"] = $link["href"];
 679                         elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != ""))
 680                                 $data["activity-inbox"] = $link["href"];
 681                         elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != ""))
 682                                 $data["activity-outbox"] = $link["href"];
 683                         elseif (($link["rel"] == "dialback") AND ($link["href"] != ""))
 684                                 $data["dialback"] = $link["href"];
 685                 }
 686                 if (isset($data["activity-inbox"]) AND isset($data["activity-outbox"]) AND
 687                         isset($data["dialback"]) AND isset($data["url"])) {
 688
 689                         // by now we use these fields only for the network type detection
 690                         // So we unset all data that isn't used at the moment
 691                         unset($data["activity-inbox"]);
 692                         unset($data["activity-outbox"]);
 693                         unset($data["dialback"]);
 694
 695                         $data["network"] = NETWORK_PUMPIO;
 696                 } else
 697                         return false;
 698
 699                 $profile_data = self::pumpio_profile_data($data["url"]);
 700
 701                 if (!$profile_data)
 702                         return false;
 703
 704                 $data = array_merge($data, $profile_data);
 705
 706                 return $data;
 707         }
 708
 709         private function get_feed_link($url) {
 710                 $doc = new DOMDocument();
 711
 712                 if (!@$doc->loadHTMLFile($url))
 713                         return false;
 714
 715                 $xpath = new DomXPath($doc);
 716
 717                 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
 718                 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
 719                 if (!is_object($feeds))
 720                         return false;
 721
 722                 if ($feeds->length == 0)
 723                         return false;
 724
 725                 $feed_url = "";
 726
 727                 foreach ($feeds AS $feed) {
 728                         $attr = array();
 729                         foreach ($feed->attributes as $attribute)
 730                         $attr[$attribute->name] = trim($attribute->value);
 731
 732                         if ($feed_url == "")
 733                                 $feed_url = $attr["href"];
 734                 }
 735
 736                 return $feed_url;
 737         }
 738
 739         private function feed($url, $probe = true) {
 740                 $feed = fetch_url($url);
 741                 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
 742
 743                 if (!$feed_data) {
 744                         if (!$probe)
 745                                 return false;
 746
 747                         $feed_url = self::get_feed_link($url);
 748
 749                         if (!$feed_url)
 750                                 return false;
 751
 752                         return self::feed($feed_url, false);
 753                 }
 754
 755                 if ($feed_data["header"]["author-name"] != "")
 756                         $data["name"] = $feed_data["header"]["author-name"];
 757
 758                 if ($feed_data["header"]["author-nick"] != "")
 759                         $data["nick"] = $feed_data["header"]["author-nick"];
 760
 761                 if ($feed_data["header"]["author-avatar"] != "")
 762                         $data["photo"] = $feed_data["header"]["author-avatar"];
 763
 764                 if ($feed_data["header"]["author-id"] != "")
 765                         $data["alias"] = $feed_data["header"]["author-id"];
 766
 767                 $data["url"] = $url;
 768                 $data["poll"] = $url;
 769
 770                 if ($feed_data["header"]["author-link"] != "")
 771                         $data["baseurl"] = $feed_data["header"]["author-link"];
 772                 else
 773                         $data["baseurl"] = $data["url"];
 774
 775                 $data["network"] = NETWORK_FEED;
 776
 777                 return $data;
 778         }
 779
 780         private function mail($uri, $uid) {
 781
 782                 if (!validate_email($uri))
 783                         return false;
 784
 785                 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
 786
 787                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
 788
 789                 if(count($x) && count($r)) {
 790                         $mailbox = construct_mailbox_name($r[0]);
 791                         $password = '';
 792                         openssl_private_decrypt(hex2bin($r[0]['pass']), $password,$x[0]['prvkey']);
 793                         $mbox = email_connect($mailbox,$r[0]['user'], $password);
 794                         if(!mbox)
 795                                 return false;
 796                 }
 797
 798                 $msgs = email_poll($mbox, $uri);
 799                 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
 800
 801                 if (!count($msgs))
 802                         return false;
 803
 804                 $data = array();
 805
 806                 $data["addr"] = $uri;
 807                 $data["network"] = NETWORK_MAIL;
 808                 $data["name"] = substr($uri, 0, strpos($uri,'@'));
 809                 $data["nick"] = $data["name"];
 810                 $data["photo"] = avatar_img($uri);
 811
 812                 $phost = substr($uri, strpos($uri,'@') + 1);
 813                 $data["url"] = 'http://'.$phost."/".$data["nick"];
 814                 $data["notify"] = 'smtp '.random_string();
 815                 $data["poll"] = 'email '.random_string();
 816
 817                 $x = email_msg_meta($mbox, $msgs[0]);
 818                 if(stristr($x[0]->from, $uri))
 819                         $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
 820                 elseif(stristr($x[0]->to, $uri))
 821                         $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
 822                 if(isset($adr)) {
 823                         foreach($adr as $feadr) {
 824                                 if((strcasecmp($feadr->mailbox, $data["name"]) == 0)
 825                                         &&(strcasecmp($feadr->host, $phost) == 0)
 826                                         && (strlen($feadr->personal))) {
 827
 828                                         $personal = imap_mime_header_decode($feadr->personal);
 829                                         $data["name"] = "";
 830                                         foreach($personal as $perspart)
 831                                                 if ($perspart->charset != "default")
 832                                                         $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
 833                                                 else
 834                                                         $data["name"] .= $perspart->text;
 835
 836                                         $data["name"] = notags($data["name"]);
 837                                 }
 838                         }
 839                 }
 840                 imap_close($mbox);
 841
 842                 return $data;
 843         }
 844 }
 845 ?>