mirror of https://github.com/friendica/friendica
support lrdd priority
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Friendika
parent
24cb2eaf63
commit
c6b28ee5ed
171
boot.php
171
boot.php
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@ -1381,12 +1381,12 @@ function webfinger($s) {
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$tpl = fetch_lrdd_template($host);
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logger('webfinger: lrdd template: ' . $tpl);
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if(strlen($tpl)) {
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$pxrd = str_replace('{uri}', urlencode('acct:'.$s), $tpl);
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$pxrd = str_replace('{uri}', urlencode('acct:' . $s), $tpl);
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logger('webfinger: pxrd: ' . $pxrd);
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$links = fetch_xrd_links($pxrd);
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if(! count($links)) {
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// try with double slashes
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$pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl);
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$pxrd = str_replace('{uri}', urlencode('acct://' . $s), $tpl);
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logger('webfinger: pxrd: ' . $pxrd);
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$links = fetch_xrd_links($pxrd);
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}
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@ -1401,51 +1401,154 @@ function lrdd($uri) {
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$a = get_app();
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// default priority is host priority, host-meta first
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$priority = 'host';
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// All we have is an email address. Resource-priority is irrelevant
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// because our URI isn't directly resolvable.
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if(strstr($uri,'@')) {
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return(webfinger($uri));
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}
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else {
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$html = fetch_url($uri);
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$headers = $a->get_curl_headers();
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logger('lrdd: headers=' . $headers, LOGGER_DEBUG);
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// get the host meta file
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$host = parse_url($uri);
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if($host) {
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$url = ((x($host,'scheme')) ? $host['scheme'] : 'http') . '://';
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$url .= $host['host'] . '/.well-known/host-meta' ;
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}
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else
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return array();
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logger('lrdd: constructed url: ' . $url);
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$xml = fetch_url($url);
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$headers = $a->get_curl_headers();
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if (! $xml)
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return array();
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logger('lrdd: host_meta: ' . $xml, LOGGER_DATA);
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$h = simplexml_load_string($xml);
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$arr = convert_xml_element_to_array($h);
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if(isset($arr['xrd']['property'])) {
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$property = $arr['crd']['property'];
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if(! isset($property[0]))
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$properties = array($property);
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else
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$properties = $property;
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foreach($properties as $prop)
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if((string) $prop['@attributes'] === 'http://lrdd.net/priority/resource')
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$priority = 'resource';
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}
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// save the links in case we need them
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$links = array();
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if(isset($arr['xrd']['link'])) {
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$link = $arr['xrd']['link'];
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if(! isset($link[0]))
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$links = array($link);
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else
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$links = $link;
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}
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// do we have a template or href?
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if(count($links)) {
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foreach($links as $link) {
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if($link['@attributes']['rel'] && attribute_contains($link['@attributes']['rel'],'lrdd')) {
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if(x($link['@attributes'],'template'))
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$tpl = $link['@attributes']['template'];
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elseif(x($link['@attributes'],'href'))
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$href = $link['@attributes']['href'];
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}
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}
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}
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if((! isset($tpl)) || (! strpos($tpl,'{uri}')))
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$tpl = '';
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if($priority === 'host') {
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if(strlen($tpl))
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$pxrd = str_replace('{uri}', urlencode($uri), $tpl);
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elseif(isset($href))
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$pxrd = $href;
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if(isset($pxrd)) {
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logger('lrdd: (host priority) pxrd: ' . $pxrd);
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$links = fetch_xrd_links($pxrd);
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return $links;
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}
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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// TODO alter the following regex to support multiple relations (space separated)
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if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
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$link = $matches[1];
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return(fetch_xrd_links($matches[1]));
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break;
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}
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// don't try and run feeds through the html5 parser
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if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
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return array();
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if(stristr($html,'<rss') || stristr($html,'<feed'))
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return array();
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}
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}
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if(! isset($link)) {
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// parse the page of the supplied URL looking for rel links
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require_once('library/HTML5/Parser.php');
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$dom = HTML5_Parser::parse($html);
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if($dom) {
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$items = $dom->getElementsByTagName('link');
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foreach($items as $item) {
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$x = $item->getAttribute('rel');
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if($x == "lrdd") {
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$link = $item->getAttribute('href');
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break;
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}
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}
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}
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}
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if(isset($link))
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return(fetch_xrd_links($link));
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}
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// priority 'resource'
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$html = fetch_url($uri);
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$headers = $a->get_curl_headers();
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logger('lrdd: headers=' . $headers, LOGGER_DEBUG);
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require_once('library/HTML5/Parser.php');
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$dom = @HTML5_Parser::parse($html);
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if($dom) {
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$items = $dom->getElementsByTagName('link');
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foreach($items as $item) {
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$x = $item->getAttribute('rel');
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if($x == "lrdd") {
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$pagelink = $item->getAttribute('href');
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break;
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}
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}
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}
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if(isset($pagelink))
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return(fetch_xrd_links($pagelink));
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// next look in HTTP headers
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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// TODO alter the following regex to support multiple relations (space separated)
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if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
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$pagelink = $matches[1];
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break;
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}
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// don't try and run feeds through the html5 parser
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if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
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return array();
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if(stristr($html,'<rss') || stristr($html,'<feed'))
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return array();
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}
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}
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if(isset($pagelink))
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return(fetch_xrd_links($pagelink));
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// If we haven't found any links, return the host xrd links (which we have already fetched)
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if(isset($links))
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return $links;
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return array();
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}}
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