<?php
/**
- * @brief This class contain functions for probing URL
+ * @file include/Probe.php
+ * @brief Functions for probing URL
*
*/
require_once('include/email.php');
require_once('include/network.php');
+/**
+ * @brief This class contain functions for probing URL
+ *
+ */
class Probe {
/**
return false;
$xrd_data = array();
+
foreach ($links["xrd"]["link"] AS $value => $link) {
if (isset($link["@attributes"]))
$attributes = $link["@attributes"];
}
/**
- * @brief Fetch information about a given uri
+ * @brief Perform Webfinger lookup and return DFRN data
+ *
+ * Given an email style address, perform webfinger lookup and
+ * return the resulting DFRN profile URL, or if no DFRN profile URL
+ * is located, returns an OStatus subscription template (prefixed
+ * with the string 'stat:' to identify it as on OStatus template).
+ * If this isn't an email style address just return $webbie.
+ * Return an empty string if email-style addresses but webfinger fails,
+ * or if the resultant personal XRD doesn't contain a supported
+ * subscription/friend-request attribute.
+ *
+ * amended 7/9/2011 to return an hcard which could save potentially loading
+ * a lengthy content page to scrape dfrn attributes
+ *
+ * @param string $webbie Address that should be probed
+ * @param string $hcard Link to the hcard - is returned by reference
+ *
+ * @return string profile link
+ */
+
+ public static function webfinger_dfrn($webbie, &$hcard) {
+ if (!strstr($webbie, '@'))
+ return $webbie;
+
+ $profile_link = '';
+
+ $links = self::webfinger($webbie);
+ logger('webfinger_dfrn: '.$webbie.':'.print_r($links,true), LOGGER_DATA);
+ if (count($links)) {
+ foreach ($links as $link) {
+ if ($link['@attributes']['rel'] === NAMESPACE_DFRN)
+ $profile_link = $link['@attributes']['href'];
+ if ($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB)
+ $profile_link = 'stat:'.$link['@attributes']['template'];
+ if ($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
+ $hcard = $link['@attributes']['href'];
+ }
+ }
+ return $profile_link;
+ }
+
+ /**
+ * @brief Check an URI for LRDD data
+ *
+ * this is a replacement for the "lrdd" function in include/network.php.
+ * It isn't used in this class and has some redundancies in the code.
+ * When time comes we can check the existing calls for "lrdd" if we can rework them.
+ *
+ * @param string $uri Address that should be probed
+ *
+ * @return array uri data
+ */
+ public static function lrdd($uri) {
+
+ $lrdd = self::xrd($uri);
+
+ if (!$lrdd) {
+ $parts = @parse_url($uri);
+ if (!$parts)
+ return array();
+
+ $host = $parts["host"];
+
+ $path_parts = explode("/", trim($parts["path"], "/"));
+
+ do {
+ $lrdd = self::xrd($host);
+ $host .= "/".array_shift($path_parts);
+ } while (!$lrdd AND (sizeof($path_parts) > 0));
+ }
+
+ if (!$lrdd)
+ return array();
+
+ foreach ($lrdd AS $key => $link) {
+ if ($webfinger)
+ continue;
+
+ if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
+ continue;
+
+ $path = str_replace('{uri}', urlencode($uri), $link);
+ $webfinger = self::webfinger($path);
+ }
+
+ if (!is_array($webfinger["links"]))
+ return false;
+
+ $data = array();
+
+ foreach ($webfinger["links"] AS $link)
+ $data[] = array("@attributes" => $link);
+
+ if (is_array($webfinger["aliases"]))
+ foreach ($webfinger["aliases"] AS $alias)
+ $data[] = array("@attributes" =>
+ array("rel" => "alias",
+ "href" => $alias));
+
+ return $data;
+ }
+
+ /**
+ * @brief Fetch information (protocol endpoints and user information) about a given uri
*
* @param string $uri Address that should be probed
* @param string $network Test for this specific network
else
$data["photo"] = App::get_baseurl().'/images/person-175.jpg';
- if (!isset($data["name"]))
- $data["name"] = $data["url"];
+ if (!isset($data["name"]) OR ($data["name"] == "")) {
+ if (isset($data["nick"]))
+ $data["name"] = $data["nick"];
+
+ if ($data["name"] == "")
+ $data["name"] = $data["url"];
+ }
- if (!isset($data["nick"]))
+ if (!isset($data["nick"]) OR ($data["nick"] == "")) {
$data["nick"] = strtolower($data["name"]);
+ if (strpos($data['nick'], ' '))
+ $data['nick'] = trim(substr($data['nick'], 0, strpos($data['nick'], ' ')));
+ }
+
if (!isset($data["network"]))
$data["network"] = NETWORK_PHANTOM;
}
/**
- * @brief Detect information about a given uri
+ * @brief Fetch information (protocol endpoints and user information) about a given uri
+ *
+ * This function is only called by the "uri" function that adds caching and rearranging of data.
*
* @param string $uri Address that should be probed
* @param string $network Test for this specific network
*/
private function detect($uri, $network, $uid) {
if (strstr($uri, '@')) {
- // If the URI starts with "mailto:" then jum directly to the mail detection
+ // If the URI starts with "mailto:" then jump directly to the mail detection
if (strpos($url,'mailto:') !== false) {
$uri = str_replace('mailto:', '', $url);
return self::mail($uri, $uid);
$host = substr($uri,strpos($uri, '@') + 1);
$nick = substr($uri,0, strpos($uri, '@'));
+ if (strpos($uri, '@twitter.com'))
+ return array("network" => NETWORK_TWITTER);
+
$lrdd = self::xrd($host);
if (!$lrdd)
return self::mail($uri, $uid);
// todo: Ports?
$host = $parts["host"];
+
+ if ($host == 'twitter.com')
+ return array("network" => NETWORK_TWITTER);
+
$lrdd = self::xrd($host);
$path_parts = explode("/", trim($parts["path"], "/"));
$nick = array_pop($path_parts);
$addr = $nick."@".$host;
}
-
$webfinger = false;
/// @todo Do we need the prefix "acct:" or "acct://"?
if (!in_array($key, array("lrdd", "lrdd-xml", "lrdd-json")))
continue;
+ // Try webfinger with the address (user@domain.tld)
$path = str_replace('{uri}', urlencode($addr), $link);
-
$webfinger = self::webfinger($path);
+
+ // If webfinger wasn't successful then try it with the URL - possibly in the format https://...
+ if (!$webfinger AND ($uri != $addr)) {
+ $path = str_replace('{uri}', urlencode($uri), $link);
+ $webfinger = self::webfinger($path);
+
+ // Since the detection with the address wasn't successful, we delete it.
+ if ($webfinger) {
+ $nick = "";
+ $addr = "";
+ }
+ }
+
}
if (!$webfinger)
return self::feed($uri);
else {
// We overwrite the detected nick with our try if the previois routines hadn't detected it.
// Additionally it is overwritten when the nickname doesn't make sense (contains spaces).
- if (!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " ")))
+ if ((!isset($result["nick"]) OR ($result["nick"] == "") OR (strstr($result["nick"], " "))) AND ($nick != ""))
$result["nick"] = $nick;
- if (!isset($result["addr"]) OR ($result["addr"] == ""))
+ if ((!isset($result["addr"]) OR ($result["addr"] == "")) AND ($addr != ""))
$result["addr"] = $addr;
}
}
/**
- * @brief Do a webfinger request
+ * @brief Perform a webfinger request.
+ *
+ * For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
*
* @param string $url Address that should be probed
*
}
/**
- * @brief Poll the noscrape page (Friendica specific)
+ * @brief Poll the Friendica specific noscrape page.
+ *
+ * "noscrape" is a faster alternative to fetch the data from the hcard.
+ * This functionality was originally created for the directory.
*
* @param string $noscrape Link to the noscrape page
* @param array $data The already fetched data
}
/**
- * @brief Fetch data from a DFRN profile page
+ * @brief Fetch data from a DFRN profile page and via "noscrape"
*
* @param string $profile Link to the profile page
*
*/
private function ostatus($webfinger) {
- $pubkey = "";
$data = array();
+ if (is_array($webfinger["aliases"]))
+ foreach($webfinger["aliases"] AS $alias)
+ if (strstr($alias, "@"))
+ $data["addr"] = str_replace('acct:', '', $alias);
+
+ $pubkey = "";
foreach ($webfinger["links"] AS $link) {
if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
($link["type"] == "text/html") AND ($link["href"] != ""))
if ($feed_data["header"]["author-id"] != "")
$data["alias"] = $feed_data["header"]["author-id"];
+ if ($feed_data["header"]["author-location"] != "")
+ $data["location"] = $feed_data["header"]["author-location"];
+
+ if ($feed_data["header"]["author-about"] != "")
+ $data["about"] = $feed_data["header"]["author-about"];
+
// OStatus has serious issues when the the url doesn't fit (ssl vs. non ssl)
// So we take the value that we just fetched, although the other one worked as well
if ($feed_data["header"]["author-link"] != "")
* @return array pump.io data
*/
private function pumpio($webfinger) {
+
$data = array();
foreach ($webfinger["links"] AS $link) {
if (($link["rel"] == "http://webfinger.net/rel/profile-page") AND
($link["type"] == "text/html") AND ($link["href"] != ""))
$data["url"] = $link["href"];
elseif (($link["rel"] == "activity-inbox") AND ($link["href"] != ""))
- $data["activity-inbox"] = $link["href"];
+ $data["notify"] = $link["href"];
elseif (($link["rel"] == "activity-outbox") AND ($link["href"] != ""))
- $data["activity-outbox"] = $link["href"];
+ $data["poll"] = $link["href"];
elseif (($link["rel"] == "dialback") AND ($link["href"] != ""))
$data["dialback"] = $link["href"];
}
- if (isset($data["activity-inbox"]) AND isset($data["activity-outbox"]) AND
+ if (isset($data["poll"]) AND isset($data["notify"]) AND
isset($data["dialback"]) AND isset($data["url"])) {
// by now we use these fields only for the network type detection
// So we unset all data that isn't used at the moment
- unset($data["activity-inbox"]);
- unset($data["activity-outbox"]);
unset($data["dialback"]);
$data["network"] = NETWORK_PUMPIO;