3 * @file include/Probe.php
4 * @brief Functions for probing URL
8 use \Friendica\Core\Config;
9 use \Friendica\Core\PConfig;
11 require_once("include/feed.php");
12 require_once('include/email.php');
13 require_once('include/network.php');
16 * @brief This class contain functions for probing URL
22 * @brief Rearrange the array so that it always has the same order
24 * @param array $data Unordered data
26 * @return array Ordered data
28 private function rearrange_data($data) {
29 $fields = array("name", "nick", "guid", "url", "addr", "alias",
30 "photo", "community", "keywords", "location", "about",
31 "batch", "notify", "poll", "request", "confirm", "poco",
32 "priority", "network", "pubkey", "baseurl");
35 foreach ($fields AS $field)
36 if (isset($data[$field]))
37 $newdata[$field] = $data[$field];
39 $newdata[$field] = "";
41 // We don't use the "priority" field anymore and replace it with a dummy.
42 $newdata["priority"] = 0;
48 * @brief Probes for XRD data
51 * 'lrdd' => Link to LRDD endpoint
52 * 'lrdd-xml' => Link to LRDD endpoint in XML format
53 * 'lrdd-json' => Link to LRDD endpoint in JSON format
55 private function xrd($host) {
57 $ssl_url = "https://".$host."/.well-known/host-meta";
58 $url = "http://".$host."/.well-known/host-meta";
60 $xrd_timeout = Config::get('system','xrd_timeout', 20);
63 $xml = fetch_url($ssl_url, false, $redirects, $xrd_timeout, "application/xrd+xml");
64 $xrd = parse_xml_string($xml, false);
66 if (!is_object($xrd)) {
67 $xml = fetch_url($url, false, $redirects, $xrd_timeout, "application/xrd+xml");
68 $xrd = parse_xml_string($xml, false);
73 $links = xml::element_to_array($xrd);
74 if (!isset($links["xrd"]["link"]))
79 foreach ($links["xrd"]["link"] AS $value => $link) {
80 if (isset($link["@attributes"]))
81 $attributes = $link["@attributes"];
82 elseif ($value == "@attributes")
87 if (($attributes["rel"] == "lrdd") AND
88 ($attributes["type"] == "application/xrd+xml"))
89 $xrd_data["lrdd-xml"] = $attributes["template"];
90 elseif (($attributes["rel"] == "lrdd") AND
91 ($attributes["type"] == "application/json"))
92 $xrd_data["lrdd-json"] = $attributes["template"];
93 elseif ($attributes["rel"] == "lrdd")
94 $xrd_data["lrdd"] = $attributes["template"];
100 * @brief Perform Webfinger lookup and return DFRN data
102 * Given an email style address, perform webfinger lookup and
103 * return the resulting DFRN profile URL, or if no DFRN profile URL
104 * is located, returns an OStatus subscription template (prefixed
105 * with the string 'stat:' to identify it as on OStatus template).
106 * If this isn't an email style address just return $webbie.
107 * Return an empty string if email-style addresses but webfinger fails,
108 * or if the resultant personal XRD doesn't contain a supported
109 * subscription/friend-request attribute.
111 * amended 7/9/2011 to return an hcard which could save potentially loading
112 * a lengthy content page to scrape dfrn attributes
114 * @param string $webbie Address that should be probed
115 * @param string $hcard Link to the hcard - is returned by reference
117 * @return string profile link
120 public static function webfinger_dfrn($webbie, &$hcard) {
124 $links = self::lrdd($webbie);
125 logger('webfinger_dfrn: '.$webbie.':'.print_r($links,true), LOGGER_DATA);
127 foreach ($links as $link) {
128 if ($link['@attributes']['rel'] === NAMESPACE_DFRN)
129 $profile_link = $link['@attributes']['href'];
130 if (($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB) AND ($profile_link == ""))
131 $profile_link = 'stat:'.$link['@attributes']['template'];
132 if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
133 $hcard = $link['@attributes']['href'];
136 return $profile_link;
140 * @brief Check an URI for LRDD data
142 * this is a replacement for the "lrdd" function in include/network.php.
143 * It isn't used in this class and has some redundancies in the code.
144 * When time comes we can check the existing calls for "lrdd" if we can rework them.
146 * @param string $uri Address that should be probed
148 * @return array uri data
150 public static function lrdd($uri) {
152 $lrdd = self::xrd($uri);
155 $parts = @parse_url($uri);
159 $host = $parts["host"];
161 $path_parts = explode("/", trim($parts["path"], "/"));
164 $lrdd = self::xrd($host);
165 $host .= "/".array_shift($path_parts);
166 } while (!$lrdd AND (sizeof($path_parts) > 0));
172 foreach ($lrdd AS $key => $link) {
176 if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
179 $path = str_replace('{uri}', urlencode($uri), $link);
180 $webfinger = self::webfinger($path);
182 if (!$webfinger AND (strstr($uri, "@"))) {
183 $path = str_replace('{uri}', urlencode("acct:".$uri), $link);
184 $webfinger = self::webfinger($path);
188 if (!is_array($webfinger["links"]))
193 foreach ($webfinger["links"] AS $link)
194 $data[] = array("@attributes" => $link);
196 if (is_array($webfinger["aliases"]))
197 foreach ($webfinger["aliases"] AS $alias)
198 $data[] = array("@attributes" =>
199 array("rel" => "alias",
206 * @brief Fetch information (protocol endpoints and user information) about a given uri
208 * @param string $uri Address that should be probed
209 * @param string $network Test for this specific network
210 * @param integer $uid User ID for the probe (only used for mails)
211 * @param boolean $cache Use cached values?
213 * @return array uri data
215 public static function uri($uri, $network = "", $uid = 0, $cache = true) {
218 $result = Cache::get("probe_url:".$network.":".$uri);
219 if (!is_null($result)) {
220 $result = unserialize($result);
228 $data = self::detect($uri, $network, $uid);
230 if (!isset($data["url"]))
233 if ($data["photo"] != "")
234 $data["baseurl"] = matching_url(normalise_link($data["baseurl"]), normalise_link($data["photo"]));
236 $data["photo"] = App::get_baseurl().'/images/person-175.jpg';
238 if (!isset($data["name"]) OR ($data["name"] == "")) {
239 if (isset($data["nick"]))
240 $data["name"] = $data["nick"];
242 if ($data["name"] == "")
243 $data["name"] = $data["url"];
246 if (!isset($data["nick"]) OR ($data["nick"] == "")) {
247 $data["nick"] = strtolower($data["name"]);
249 if (strpos($data['nick'], ' '))
250 $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
253 if (!isset($data["network"]))
254 $data["network"] = NETWORK_PHANTOM;
256 $data = self::rearrange_data($data);
258 // Only store into the cache if the value seems to be valid
259 if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
260 Cache::set("probe_url:".$network.":".$uri,serialize($data), CACHE_DAY);
262 /// @todo temporary fix - we need a real contact update function that updates only changing fields
263 /// The biggest problem is the avatar picture that could have a reduced image size.
264 /// It should only be updated if the existing picture isn't existing anymore.
265 if (($data['network'] != NETWORK_FEED) AND ($mode == PROBE_NORMAL) AND
266 $data["name"] AND $data["nick"] AND $data["url"] AND $data["addr"] AND $data["poll"])
267 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `url` = '%s', `addr` = '%s',
268 `notify` = '%s', `poll` = '%s', `alias` = '%s', `success_update` = '%s'
269 WHERE `nurl` = '%s' AND NOT `self` AND `uid` = 0",
270 dbesc($data["name"]),
271 dbesc($data["nick"]),
273 dbesc($data["addr"]),
274 dbesc($data["notify"]),
275 dbesc($data["poll"]),
276 dbesc($data["alias"]),
277 dbesc(datetime_convert()),
278 dbesc(normalise_link($data['url']))
285 * @brief Fetch information (protocol endpoints and user information) about a given uri
287 * This function is only called by the "uri" function that adds caching and rearranging of data.
289 * @param string $uri Address that should be probed
290 * @param string $network Test for this specific network
291 * @param integer $uid User ID for the probe (only used for mails)
293 * @return array uri data
295 private function detect($uri, $network, $uid) {
296 if (strstr($uri, '@')) {
297 // If the URI starts with "mailto:" then jump directly to the mail detection
298 if (strpos($url,'mailto:') !== false) {
299 $uri = str_replace('mailto:', '', $url);
300 return self::mail($uri, $uid);
303 if ($network == NETWORK_MAIL)
304 return self::mail($uri, $uid);
306 // Remove "acct:" from the URI
307 $uri = str_replace('acct:', '', $uri);
309 $host = substr($uri,strpos($uri, '@') + 1);
310 $nick = substr($uri,0, strpos($uri, '@'));
312 if (strpos($uri, '@twitter.com'))
313 return array("network" => NETWORK_TWITTER);
315 $lrdd = self::xrd($host);
318 return self::mail($uri, $uid);
322 $parts = parse_url($uri);
323 if (!isset($parts["scheme"]) OR
324 !isset($parts["host"]) OR
325 !isset($parts["path"]))
329 $host = $parts["host"];
331 if ($host == 'twitter.com')
332 return array("network" => NETWORK_TWITTER);
334 $lrdd = self::xrd($host);
336 $path_parts = explode("/", trim($parts["path"], "/"));
338 while (!$lrdd AND (sizeof($path_parts) > 1)) {
339 $host .= "/".array_shift($path_parts);
340 $lrdd = self::xrd($host);
343 return self::feed($uri);
345 $nick = array_pop($path_parts);
346 $addr = $nick."@".$host;
350 /// @todo Do we need the prefix "acct:" or "acct://"?
352 foreach ($lrdd AS $key => $link) {
356 if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
359 // Try webfinger with the address (user@domain.tld)
360 $path = str_replace('{uri}', urlencode($addr), $link);
361 $webfinger = self::webfinger($path);
363 // Mastodon needs to have it with "acct:"
365 $path = str_replace('{uri}', urlencode("acct:".$addr), $link);
366 $webfinger = self::webfinger($path);
369 // If webfinger wasn't successful then try it with the URL - possibly in the format https://...
370 if (!$webfinger AND ($uri != $addr)) {
371 $path = str_replace('{uri}', urlencode($uri), $link);
372 $webfinger = self::webfinger($path);
374 // Since the detection with the address wasn't successful, we delete it.
383 return self::feed($uri);
387 logger("Probing ".$uri, LOGGER_DEBUG);
389 if (in_array($network, array("", NETWORK_DFRN)))
390 $result = self::dfrn($webfinger);
391 if ((!$result AND ($network == "")) OR ($network == NETWORK_DIASPORA))
392 $result = self::diaspora($webfinger);
393 if ((!$result AND ($network == "")) OR ($network == NETWORK_OSTATUS))
394 $result = self::ostatus($webfinger);
395 if ((!$result AND ($network == "")) OR ($network == NETWORK_PUMPIO))
396 $result = self::pumpio($webfinger);
397 if ((!$result AND ($network == "")) OR ($network == NETWORK_FEED))
398 $result = self::feed($uri);
400 // We overwrite the detected nick with our try if the previois routines hadn't detected it.
401 // Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
402 if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != ""))
403 $result["nick"] = $nick;
405 if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != ""))
406 $result["addr"] = $addr;
409 logger($uri." is ".$result["network"], LOGGER_DEBUG);
411 if (!isset($result["baseurl"]) OR ($result["baseurl"] == "")) {
412 $pos = strpos($result["url"], $host);
414 $result["baseurl"] = substr($result["url"], 0, $pos).$host;
421 * @brief Perform a webfinger request.
423 * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
425 * @param string $url Address that should be probed
427 * @return array webfinger data
429 private function webfinger($url) {
431 $xrd_timeout = Config::get('system','xrd_timeout', 20);
434 $data = fetch_url($url, false, $redirects, $xrd_timeout, "application/xrd+xml");
435 $xrd = parse_xml_string($data, false);
437 if (!is_object($xrd)) {
438 // If it is not XML, maybe it is JSON
439 $webfinger = json_decode($data, true);
441 if (!isset($webfinger["links"]))
447 $xrd_arr = xml::element_to_array($xrd);
448 if (!isset($xrd_arr["xrd"]["link"]))
451 $webfinger = array();
453 if (isset($xrd_arr["xrd"]["subject"]))
454 $webfinger["subject"] = $xrd_arr["xrd"]["subject"];
456 if (isset($xrd_arr["xrd"]["alias"]))
457 $webfinger["aliases"] = $xrd_arr["xrd"]["alias"];
459 $webfinger["links"] = array();
461 foreach ($xrd_arr["xrd"]["link"] AS $value => $data) {
462 if (isset($data["@attributes"]))
463 $attributes = $data["@attributes"];
464 elseif ($value == "@attributes")
469 $webfinger["links"][] = $attributes;
475 * @brief Poll the Friendica specific noscrape page.
477 * "noscrape" is a faster alternative to fetch the data from the hcard.
478 * This functionality was originally created for the directory.
480 * @param string $noscrape Link to the noscrape page
481 * @param array $data The already fetched data
483 * @return array noscrape data
485 private function poll_noscrape($noscrape, $data) {
486 $content = fetch_url($noscrape);
490 $json = json_decode($content, true);
491 if (!is_array($json))
494 if (isset($json["fn"]))
495 $data["name"] = $json["fn"];
497 if (isset($json["addr"]))
498 $data["addr"] = $json["addr"];
500 if (isset($json["nick"]))
501 $data["nick"] = $json["nick"];
503 if (isset($json["comm"]))
504 $data["community"] = $json["comm"];
506 if (isset($json["tags"])) {
507 $keywords = implode(" ", $json["tags"]);
509 $data["keywords"] = $keywords;
512 $location = formatted_location($json);
514 $data["location"] = $location;
516 if (isset($json["about"]))
517 $data["about"] = $json["about"];
519 if (isset($json["key"]))
520 $data["pubkey"] = $json["key"];
522 if (isset($json["photo"]))
523 $data["photo"] = $json["photo"];
525 if (isset($json["dfrn-request"]))
526 $data["request"] = $json["dfrn-request"];
528 if (isset($json["dfrn-confirm"]))
529 $data["confirm"] = $json["dfrn-confirm"];
531 if (isset($json["dfrn-notify"]))
532 $data["notify"] = $json["dfrn-notify"];
534 if (isset($json["dfrn-poll"]))
535 $data["poll"] = $json["dfrn-poll"];
541 * @brief Check for valid DFRN data
543 * @param array $data DFRN data
545 * @return int Number of errors
547 public static function valid_dfrn($data) {
549 if(!isset($data['key']))
551 if(!isset($data['dfrn-request']))
553 if(!isset($data['dfrn-confirm']))
555 if(!isset($data['dfrn-notify']))
557 if(!isset($data['dfrn-poll']))
563 * @brief Fetch data from a DFRN profile page and via "noscrape"
565 * @param string $profile Link to the profile page
567 * @return array profile data
569 public static function profile($profile) {
573 // Fetch data via noscrape - this is faster
574 $noscrape = str_replace(array("/hcard/", "/profile/"), "/noscrape/", $profile);
575 $data = self::poll_noscrape($noscrape, $data);
577 if (!isset($data["notify"]) OR !isset($data["confirm"]) OR
578 !isset($data["request"]) OR !isset($data["poll"]) OR
579 !isset($data["poco"]) OR !isset($data["name"]) OR
580 !isset($data["photo"]))
581 $data = self::poll_hcard($profile, $data, true);
583 $prof_data = array();
584 $prof_data["addr"] = $data["addr"];
585 $prof_data["nick"] = $data["nick"];
586 $prof_data["dfrn-request"] = $data["request"];
587 $prof_data["dfrn-confirm"] = $data["confirm"];
588 $prof_data["dfrn-notify"] = $data["notify"];
589 $prof_data["dfrn-poll"] = $data["poll"];
590 $prof_data["dfrn-poco"] = $data["poco"];
591 $prof_data["photo"] = $data["photo"];
592 $prof_data["fn"] = $data["name"];
593 $prof_data["key"] = $data["pubkey"];
599 * @brief Check for DFRN contact
601 * @param array $webfinger Webfinger data
603 * @return array DFRN data
605 private function dfrn($webfinger) {
609 foreach ($webfinger["links"] AS $link) {
610 if (($link["rel"] == NAMESPACE_DFRN) AND ($link["href"] != ""))
611 $data["network"] = NETWORK_DFRN;
612 elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
613 $data["poll"] = $link["href"];
614 elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
615 ($link["type"] == "text/html") AND ($link["href"] != ""))
616 $data["url"] = $link["href"];
617 elseif (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
618 $hcard = $link["href"];
619 elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
620 $data["poco"] = $link["href"];
621 elseif (($link["rel"] == "http://webfinger.net/rel/avatar") AND ($link["href"] != ""))
622 $data["photo"] = $link["href"];
624 elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
625 $data["baseurl"] = trim($link["href"], '/');
626 elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
627 $data["guid"] = $link["href"];
628 elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
629 $data["pubkey"] = base64_decode($link["href"]);
631 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
632 if (strstr($data["pubkey"], 'RSA '))
633 $data["pubkey"] = rsatopem($data["pubkey"]);
637 if (!isset($data["network"]) OR ($hcard == ""))
640 // Fetch data via noscrape - this is faster
641 $noscrape = str_replace("/hcard/", "/noscrape/", $hcard);
642 $data = self::poll_noscrape($noscrape, $data);
644 if (isset($data["notify"]) AND isset($data["confirm"]) AND isset($data["request"]) AND
645 isset($data["poll"]) AND isset($data["name"]) AND isset($data["photo"]))
648 $data = self::poll_hcard($hcard, $data, true);
654 * @brief Poll the hcard page (Diaspora and Friendica specific)
656 * @param string $hcard Link to the hcard page
657 * @param array $data The already fetched data
658 * @param boolean $dfrn Poll DFRN specific data
660 * @return array hcard data
662 private function poll_hcard($hcard, $data, $dfrn = false) {
664 $doc = new DOMDocument();
665 if (!@$doc->loadHTMLFile($hcard))
668 $xpath = new DomXPath($doc);
670 $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
671 if (!is_object($vcards))
674 if ($vcards->length == 0)
677 $vcard = $vcards->item(0);
679 // We have to discard the guid from the hcard in favour of the guid from lrdd
680 // Reason: Hubzilla doesn't use the value "uid" in the hcard like Diaspora does.
681 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' uid ')]", $vcard); // */
682 if (($search->length > 0) AND ($data["guid"] == ""))
683 $data["guid"] = $search->item(0)->nodeValue;
685 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' nickname ')]", $vcard); // */
686 if ($search->length > 0)
687 $data["nick"] = $search->item(0)->nodeValue;
689 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' fn ')]", $vcard); // */
690 if ($search->length > 0)
691 $data["name"] = $search->item(0)->nodeValue;
693 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' searchable ')]", $vcard); // */
694 if ($search->length > 0)
695 $data["searchable"] = $search->item(0)->nodeValue;
697 $search = $xpath->query("//*[contains(concat(' ', @class, ' '), ' key ')]", $vcard); // */
698 if ($search->length > 0) {
699 $data["pubkey"] = $search->item(0)->nodeValue;
700 if (strstr($data["pubkey"], 'RSA '))
701 $data["pubkey"] = rsatopem($data["pubkey"]);
704 $search = $xpath->query("//*[@id='pod_location']", $vcard); // */
705 if ($search->length > 0)
706 $data["baseurl"] = trim($search->item(0)->nodeValue, "/");
709 $photos = $xpath->query("//*[contains(concat(' ', @class, ' '), ' photo ') or contains(concat(' ', @class, ' '), ' avatar ')]", $vcard); // */
710 foreach ($photos AS $photo) {
712 foreach ($photo->attributes as $attribute)
713 $attr[$attribute->name] = trim($attribute->value);
715 if (isset($attr["src"]) AND isset($attr["width"]))
716 $avatar[$attr["width"]] = $attr["src"];
719 if (sizeof($avatar)) {
721 $data["photo"] = array_pop($avatar);
725 // Poll DFRN specific data
726 $search = $xpath->query("//link[contains(concat(' ', @rel), ' dfrn-')]");
727 if ($search->length > 0) {
728 foreach ($search AS $link) {
729 //$data["request"] = $search->item(0)->nodeValue;
731 foreach ($link->attributes as $attribute)
732 $attr[$attribute->name] = trim($attribute->value);
734 $data[substr($attr["rel"], 5)] = $attr["href"];
738 // Older Friendica versions had used the "uid" field differently than newer versions
739 if ($data["nick"] == $data["guid"])
740 unset($data["guid"]);
748 * @brief Check for Diaspora contact
750 * @param array $webfinger Webfinger data
752 * @return array Diaspora data
754 private function diaspora($webfinger) {
758 foreach ($webfinger["links"] AS $link) {
759 if (($link["rel"] == "http://microformats.org/profile/hcard") AND ($link["href"] != ""))
760 $hcard = $link["href"];
761 elseif (($link["rel"] == "http://joindiaspora.com/seed_location") AND ($link["href"] != ""))
762 $data["baseurl"] = trim($link["href"], '/');
763 elseif (($link["rel"] == "http://joindiaspora.com/guid") AND ($link["href"] != ""))
764 $data["guid"] = $link["href"];
765 elseif (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
766 ($link["type"] == "text/html") AND ($link["href"] != ""))
767 $data["url"] = $link["href"];
768 elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
769 $data["poll"] = $link["href"];
770 elseif (($link["rel"] == NAMESPACE_POCO) AND ($link["href"] != ""))
771 $data["poco"] = $link["href"];
772 elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
773 $data["notify"] = $link["href"];
774 elseif (($link["rel"] == "diaspora-public-key") AND ($link["href"] != "")) {
775 $data["pubkey"] = base64_decode($link["href"]);
777 //if (strstr($data["pubkey"], 'RSA ') OR ($link["type"] == "RSA"))
778 if (strstr($data["pubkey"], 'RSA '))
779 $data["pubkey"] = rsatopem($data["pubkey"]);
783 if (!isset($data["url"]) OR ($hcard == ""))
786 if (is_array($webfinger["aliases"]))
787 foreach ($webfinger["aliases"] AS $alias)
788 if (normalise_link($alias) != normalise_link($data["url"]) AND !strstr($alias, "@"))
789 $data["alias"] = $alias;
791 // Fetch further information from the hcard
792 $data = self::poll_hcard($hcard, $data);
797 if (isset($data["url"]) AND isset($data["guid"]) AND isset($data["baseurl"]) AND
798 isset($data["pubkey"]) AND ($hcard != "")) {
799 $data["network"] = NETWORK_DIASPORA;
801 // The Diaspora handle must always be lowercase
802 $data["addr"] = strtolower($data["addr"]);
804 // We have to overwrite the detected value for "notify" since Hubzilla doesn't send it
805 $data["notify"] = $data["baseurl"]."/receive/users/".$data["guid"];
806 $data["batch"] = $data["baseurl"]."/receive/public";
814 * @brief Check for OStatus contact
816 * @param array $webfinger Webfinger data
818 * @return array OStatus data
820 private function ostatus($webfinger) {
823 if (is_array($webfinger["aliases"]))
824 foreach($webfinger["aliases"] AS $alias)
825 if (strstr($alias, "@"))
826 $data["addr"] = str_replace('acct:', '', $alias);
828 if (is_string($webfinger["subject"]) AND strstr($webfinger["subject"], "@"))
829 $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
832 foreach ($webfinger["links"] AS $link) {
833 if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
834 ($link["type"] == "text/html") AND ($link["href"] != ""))
835 $data["url"] = $link["href"];
836 elseif (($link["rel"] == "salmon") AND ($link["href"] != ""))
837 $data["notify"] = $link["href"];
838 elseif (($link["rel"] == NAMESPACE_FEED) AND ($link["href"] != ""))
839 $data["poll"] = $link["href"];
840 elseif (($link["rel"] == "magic-public-key") AND ($link["href"] != "")) {
841 $pubkey = $link["href"];
843 if (substr($pubkey, 0, 5) === 'data:') {
844 if (strstr($pubkey, ','))
845 $pubkey = substr($pubkey, strpos($pubkey, ',') + 1);
847 $pubkey = substr($pubkey, 5);
848 } elseif (normalise_link($pubkey) == 'http://')
849 $pubkey = fetch_url($pubkey);
851 $key = explode(".", $pubkey);
853 if (sizeof($key) >= 3) {
854 $m = base64url_decode($key[1]);
855 $e = base64url_decode($key[2]);
856 $data["pubkey"] = metopem($m,$e);
862 if (isset($data["notify"]) AND isset($data["pubkey"]) AND
863 isset($data["poll"]) AND isset($data["url"])) {
864 $data["network"] = NETWORK_OSTATUS;
868 // Fetch all additional data from the feed
869 $feed = fetch_url($data["poll"]);
870 $feed_data = feed_import($feed,$dummy1,$dummy2, $dummy3, true);
874 if ($feed_data["header"]["author-name"] != "")
875 $data["name"] = $feed_data["header"]["author-name"];
877 if ($feed_data["header"]["author-nick"] != "")
878 $data["nick"] = $feed_data["header"]["author-nick"];
880 if ($feed_data["header"]["author-avatar"] != "")
881 $data["photo"] = $feed_data["header"]["author-avatar"];
883 if ($feed_data["header"]["author-id"] != "")
884 $data["alias"] = $feed_data["header"]["author-id"];
886 if ($feed_data["header"]["author-location"] != "")
887 $data["location"] = $feed_data["header"]["author-location"];
889 if ($feed_data["header"]["author-about"] != "")
890 $data["about"] = $feed_data["header"]["author-about"];
892 // OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
893 // So we take the value that we just fetched, although the other one worked as well
894 if ($feed_data["header"]["author-link"] != "")
895 $data["url"] = $feed_data["header"]["author-link"];
897 /// @todo Fetch location and "about" from the feed as well
902 * @brief Fetch data from a pump.io profile page
904 * @param string $profile Link to the profile page
906 * @return array profile data
908 private function pumpio_profile_data($profile) {
910 $doc = new DOMDocument();
911 if (!@$doc->loadHTMLFile($profile))
914 $xpath = new DomXPath($doc);
918 // This is ugly - but pump.io doesn't seem to know a better way for it
919 $data["name"] = trim($xpath->query("//h1[@class='media-header']")->item(0)->nodeValue);
920 $pos = strpos($data["name"], chr(10));
922 $data["name"] = trim(substr($data["name"], 0, $pos));
924 $avatar = $xpath->query("//img[@class='img-rounded media-object']")->item(0);
926 foreach ($avatar->attributes as $attribute)
927 if ($attribute->name == "src")
928 $data["photo"] = trim($attribute->value);
930 $data["location"] = $xpath->query("//p[@class='location']")->item(0)->nodeValue;
931 $data["about"] = $xpath->query("//p[@class='summary']")->item(0)->nodeValue;
937 * @brief Check for pump.io contact
939 * @param array $webfinger Webfinger data
941 * @return array pump.io data
943 private function pumpio($webfinger) {
946 foreach ($webfinger["links"] AS $link) {
947 if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
948 ($link["type"] == "text/html") AND ($link["href"] != ""))
949 $data["url"] = $link["href"];
950 elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != ""))
951 $data["notify"] = $link["href"];
952 elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != ""))
953 $data["poll"] = $link["href"];
954 elseif (($link["rel"] == "dialback") AND ($link["href"] != ""))
955 $data["dialback"] = $link["href"];
957 if (isset($data["poll"]) AND isset($data["notify"]) AND
958 isset($data["dialback"]) AND isset($data["url"])) {
960 // by now we use these fields only for the network type detection
961 // So we unset all data that isn't used at the moment
962 unset($data["dialback"]);
964 $data["network"] = NETWORK_PUMPIO;
968 $profile_data = self::pumpio_profile_data($data["url"]);
973 $data = array_merge($data, $profile_data);
979 * @brief Check page for feed link
981 * @param string $url Page link
983 * @return string feed link
985 private function get_feed_link($url) {
986 $doc = new DOMDocument();
988 if (!@$doc->loadHTMLFile($url))
991 $xpath = new DomXPath($doc);
993 //$feeds = $xpath->query("/html/head/link[@type='application/rss+xml']");
994 $feeds = $xpath->query("/html/head/link[@type='application/rss+xml' and @rel='alternate']");
995 if (!is_object($feeds))
998 if ($feeds->length == 0)
1003 foreach ($feeds AS $feed) {
1005 foreach ($feed->attributes as $attribute)
1006 $attr[$attribute->name] = trim($attribute->value);
1008 if ($feed_url == "")
1009 $feed_url = $attr["href"];
1016 * @brief Check for feed contact
1018 * @param string $url Profile link
1019 * @param boolean $probe Do a probe if the page contains a feed link
1021 * @return array feed data
1023 private function feed($url, $probe = true) {
1024 $feed = fetch_url($url);
1025 $feed_data = feed_import($feed, $dummy1, $dummy2, $dummy3, true);
1031 $feed_url = self::get_feed_link($url);
1036 return self::feed($feed_url, false);
1039 if ($feed_data["header"]["author-name"] != "")
1040 $data["name"] = $feed_data["header"]["author-name"];
1042 if ($feed_data["header"]["author-nick"] != "")
1043 $data["nick"] = $feed_data["header"]["author-nick"];
1045 if ($feed_data["header"]["author-avatar"] != "")
1046 $data["photo"] = $feed_data["header"]["author-avatar"];
1048 if ($feed_data["header"]["author-id"] != "")
1049 $data["alias"] = $feed_data["header"]["author-id"];
1051 $data["url"] = $url;
1052 $data["poll"] = $url;
1054 if ($feed_data["header"]["author-link"] != "")
1055 $data["baseurl"] = $feed_data["header"]["author-link"];
1057 $data["baseurl"] = $data["url"];
1059 $data["network"] = NETWORK_FEED;
1065 * @brief Check for mail contact
1067 * @param string $uri Profile link
1068 * @param integer $uid User ID
1070 * @return array mail data
1072 private function mail($uri, $uid) {
1074 if (!validate_email($uri))
1077 $x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
1079 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
1081 if(count($x) && count($r)) {
1082 $mailbox = construct_mailbox_name($r[0]);
1084 openssl_private_decrypt(hex2bin($r[0]['pass']), $password,$x[0]['prvkey']);
1085 $mbox = email_connect($mailbox,$r[0]['user'], $password);
1090 $msgs = email_poll($mbox, $uri);
1091 logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
1098 $data["addr"] = $uri;
1099 $data["network"] = NETWORK_MAIL;
1100 $data["name"] = substr($uri, 0, strpos($uri,'@'));
1101 $data["nick"] = $data["name"];
1102 $data["photo"] = avatar_img($uri);
1104 $phost = substr($uri, strpos($uri,'@') + 1);
1105 $data["url"] = 'http://'.$phost."/".$data["nick"];
1106 $data["notify"] = 'smtp '.random_string();
1107 $data["poll"] = 'email '.random_string();
1109 $x = email_msg_meta($mbox, $msgs[0]);
1110 if(stristr($x[0]->from, $uri))
1111 $adr = imap_rfc822_parse_adrlist($x[0]->from, '');
1112 elseif(stristr($x[0]->to, $uri))
1113 $adr = imap_rfc822_parse_adrlist($x[0]->to, '');
1115 foreach($adr as $feadr) {
1116 if((strcasecmp($feadr->mailbox, $data["name"]) == 0)
1117 &&(strcasecmp($feadr->host, $phost) == 0)
1118 && (strlen($feadr->personal))) {
1120 $personal = imap_mime_header_decode($feadr->personal);
1122 foreach($personal as $perspart)
1123 if ($perspart->charset != "default")
1124 $data["name"] .= iconv($perspart->charset, 'UTF-8//IGNORE', $perspart->text);
1126 $data["name"] .= $perspart->text;
1128 $data["name"] = notags($data["name"]);