return false;
$xrd_data = array();
+
foreach ($links["xrd"]["link"] AS $value => $link) {
if (isset($link["@attributes"]))
$attributes = $link["@attributes"];
return $xrd_data;
}
+ /**
+ * @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 about a given uri
*
*/
require_once("include/xml.php");
-
+require_once('include/Probe.php');
/**
* @brief Curl wrapper
}
-// 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 $webbie.
-// Return an empty string if email-style addresses but webfinger fails,
-// or if the resultant personal XRD doesn't contain a supported
-// subscription/friend-request attribute.
-
-// amended 7/9/2011 to return an hcard which could save potentially loading
-// a lengthy content page to scrape dfrn attributes
-
-function webfinger_dfrn($webbie,&$hcard) {
- if(! strstr($webbie,'@')) {
- return $webbie;
- }
- $profile_link = '';
-
- $links = webfinger($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 Perform webfinger lookup on an email style address
- *
- * @param string $webbi An email style address
- * @param boolean $debug
- *
- * @return array of link attributes from the personal XRD file
- * empty array on error/failure
- */
-function webfinger($webbie, $debug = false) {
- $host = '';
- if(strstr($webbie,'@')) {
- $host = substr($webbie,strpos($webbie,'@') + 1);
- }
- if(strlen($host)) {
- $tpl = fetch_lrdd_template($host);
- logger('webfinger: lrdd template: ' . $tpl);
- if(strlen($tpl)) {
- $pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl);
- logger('webfinger: pxrd: ' . $pxrd);
- $links = fetch_xrd_links($pxrd);
- if(! count($links)) {
- // try with double slashes
- $pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl);
- logger('webfinger: pxrd: ' . $pxrd);
- $links = fetch_xrd_links($pxrd);
- }
- return $links;
- }
- }
- return array();
-}
-
-function lrdd($uri, $debug = false) {
-
- $a = get_app();
-
- // default priority is host priority, host-meta first
-
- $priority = 'host';
-
- // All we have is an email address. Resource-priority is irrelevant
- // because our URI isn't directly resolvable.
-
- if(strstr($uri,'@')) {
- return(webfinger($uri));
- }
-
- // get the host meta file
-
- $host = @parse_url($uri);
-
- if($host) {
- $url = ((x($host,'scheme')) ? $host['scheme'] : 'http') . '://';
- $url .= $host['host'] . '/.well-known/host-meta' ;
- }
- else
- return array();
-
- logger('lrdd: constructed url: ' . $url);
-
- $xml = fetch_url($url);
-
- $headers = $a->get_curl_headers();
-
- if (! $xml)
- return array();
-
- logger('lrdd: host_meta: ' . $xml, LOGGER_DATA);
-
- if(! stristr($xml,'<xrd'))
- return array();
-
- $h = parse_xml_string($xml);
- if(! $h)
- return array();
-
- $arr = xml::element_to_array($h);
-
- if(isset($arr['xrd']['property'])) {
- $property = $arr['crd']['property'];
- if(! isset($property[0]))
- $properties = array($property);
- else
- $properties = $property;
- foreach($properties as $prop)
- if((string) $prop['@attributes'] === 'http://lrdd.net/priority/resource')
- $priority = 'resource';
- }
-
- // save the links in case we need them
-
- $links = array();
-
- if(isset($arr['xrd']['link'])) {
- $link = $arr['xrd']['link'];
- if(! isset($link[0]))
- $links = array($link);
- else
- $links = $link;
- }
-
- // do we have a template or href?
-
- if(count($links)) {
- foreach($links as $link) {
- if($link['@attributes']['rel'] && attribute_contains($link['@attributes']['rel'],'lrdd')) {
- if(x($link['@attributes'],'template'))
- $tpl = $link['@attributes']['template'];
- elseif(x($link['@attributes'],'href'))
- $href = $link['@attributes']['href'];
- }
- }
- }
-
- if((! isset($tpl)) || (! strpos($tpl,'{uri}')))
- $tpl = '';
-
- if($priority === 'host') {
- if(strlen($tpl))
- $pxrd = str_replace('{uri}', urlencode($uri), $tpl);
- elseif(isset($href))
- $pxrd = $href;
- if(isset($pxrd)) {
- logger('lrdd: (host priority) pxrd: ' . $pxrd);
- $links = fetch_xrd_links($pxrd);
- return $links;
- }
-
- $lines = explode("\n",$headers);
- if(count($lines)) {
- foreach($lines as $line) {
- if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
- return(fetch_xrd_links($matches[1]));
- break;
- }
- }
- }
- }
-
-
- // priority 'resource'
-
-
- $html = fetch_url($uri);
- $headers = $a->get_curl_headers();
- logger('lrdd: headers=' . $headers, LOGGER_DEBUG);
-
- // don't try and parse raw xml as html
- if(! strstr($html,'<?xml')) {
- require_once('library/HTML5/Parser.php');
-
- try {
- $dom = HTML5_Parser::parse($html);
- } catch (DOMException $e) {
- logger('lrdd: parse error: ' . $e);
- }
-
- if(isset($dom) && $dom) {
- $items = $dom->getElementsByTagName('link');
- foreach($items as $item) {
- $x = $item->getAttribute('rel');
- if($x == "lrdd") {
- $pagelink = $item->getAttribute('href');
- break;
- }
- }
- }
- }
-
- if(isset($pagelink))
- return(fetch_xrd_links($pagelink));
-
- // next look in HTTP headers
-
- $lines = explode("\n",$headers);
- if(count($lines)) {
- foreach($lines as $line) {
- /// @TODO Alter the following regex to support multiple relations (space separated)
- if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
- $pagelink = $matches[1];
- break;
- }
- // don't try and run feeds through the html5 parser
- if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
- return array();
- if(stristr($html,'<rss') || stristr($html,'<feed'))
- return array();
- }
- }
-
- if(isset($pagelink))
- return(fetch_xrd_links($pagelink));
-
- // If we haven't found any links, return the host xrd links (which we have already fetched)
-
- if(isset($links))
- return $links;
-
- return array();
-
-}
-
-// Given a host name, locate the LRDD template from that
-// host. Returns the LRDD template or an empty string on
-// error/failure.
-
-function fetch_lrdd_template($host) {
- $tpl = '';
-
- $url1 = 'https://' . $host . '/.well-known/host-meta' ;
- $url2 = 'http://' . $host . '/.well-known/host-meta' ;
- $links = fetch_xrd_links($url1);
- logger('fetch_lrdd_template from: ' . $url1);
- logger('template (https): ' . print_r($links,true));
- if(! count($links)) {
- logger('fetch_lrdd_template from: ' . $url2);
- $links = fetch_xrd_links($url2);
- logger('template (http): ' . print_r($links,true));
- }
- if(count($links)) {
- foreach($links as $link)
- if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd' && (!$link['@attributes']['type'] || $link['@attributes']['type'] === 'application/xrd+xml'))
- $tpl = $link['@attributes']['template'];
- }
- if(! strpos($tpl,'{uri}'))
- $tpl = '';
- return $tpl;
-}
-
-/**
- * @brief Given a URL, retrieve the page as an XRD document.
- *
- * @param string $url An url
- * @return array of links
- * return empty array on error/failure
- */
-function fetch_xrd_links($url) {
-
- $xrd_timeout = intval(get_config('system','xrd_timeout'));
- $redirects = 0;
- $xml = fetch_url($url,false,$redirects,(($xrd_timeout) ? $xrd_timeout : 20), "application/xrd+xml");
-
- logger('fetch_xrd_links: ' . $xml, LOGGER_DATA);
-
- if ((! $xml) || (! stristr($xml,'<xrd')))
- return array();
-
- // fix diaspora's bad xml
- $xml = str_replace(array('href="','"/>'),array('href="','"/>'),$xml);
-
- $h = parse_xml_string($xml);
- if(! $h)
- return array();
-
- $arr = xml::element_to_array($h);
-
- $links = array();
-
- if(isset($arr['xrd']['link'])) {
- $link = $arr['xrd']['link'];
- if(! isset($link[0]))
- $links = array($link);
- else
- $links = $link;
- }
- if(isset($arr['xrd']['alias'])) {
- $alias = $arr['xrd']['alias'];
- if(! isset($alias[0]))
- $aliases = array($alias);
- else
- $aliases = $alias;
- if(is_array($aliases) && count($aliases)) {
- foreach($aliases as $alias) {
- $links[]['@attributes'] = array('rel' => 'alias' , 'href' => $alias);
- }
- }
- }
-
- logger('fetch_xrd_links: ' . print_r($links,true), LOGGER_DATA);
-
- return $links;
-
-}
-
/**
* @brief Check URL to se if ts's real
*
projects / friendica.git / commitdiff