diff options
| -rw-r--r-- | boot.php | 159 |
1 files changed, 131 insertions, 28 deletions
@@ -1381,12 +1381,12 @@ function webfinger($s) { $tpl = fetch_lrdd_template($host); logger('webfinger: lrdd template: ' . $tpl); if(strlen($tpl)) { - $pxrd = str_replace('{uri}', urlencode('acct:'.$s), $tpl); + $pxrd = str_replace('{uri}', urlencode('acct:' . $s), $tpl); logger('webfinger: pxrd: ' . $pxrd); $links = fetch_xrd_links($pxrd); if(! count($links)) { // try with double slashes - $pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl); + $pxrd = str_replace('{uri}', urlencode('acct://' . $s), $tpl); logger('webfinger: pxrd: ' . $pxrd); $links = fetch_xrd_links($pxrd); } @@ -1401,51 +1401,154 @@ function lrdd($uri) { $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)); } - else { - $html = fetch_url($uri); - $headers = $a->get_curl_headers(); - logger('lrdd: headers=' . $headers, LOGGER_DEBUG); + + // 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); + $h = simplexml_load_string($xml); + $arr = convert_xml_element_to_array($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 $line) { - // TODO alter the following regex to support multiple relations (space separated) if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) { - $link = $matches[1]; + return(fetch_xrd_links($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($html,'<feed')) - return array(); } } - if(! isset($link)) { - // parse the page of the supplied URL looking for rel links + } - require_once('library/HTML5/Parser.php'); - $dom = HTML5_Parser::parse($html); - if($dom) { - $items = $dom->getElementsByTagName('link'); + // priority 'resource' - foreach($items as $item) { - $x = $item->getAttribute('rel'); - if($x == "lrdd") { - $link = $item->getAttribute('href'); - break; - } - } + + $html = fetch_url($uri); + $headers = $a->get_curl_headers(); + logger('lrdd: headers=' . $headers, LOGGER_DEBUG); + + require_once('library/HTML5/Parser.php'); + $dom = @HTML5_Parser::parse($html); + + if($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($pagelink)); - if(isset($link)) - return(fetch_xrd_links($link)); + // 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(); + }} |