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