diff options
Diffstat (limited to 'include/network.php')
| -rw-r--r-- | include/network.php | 244 |
1 files changed, 149 insertions, 95 deletions
diff --git a/include/network.php b/include/network.php index 66bba5b38..1a974a681 100644 --- a/include/network.php +++ b/include/network.php @@ -337,101 +337,6 @@ function convert_xml_element_to_array($xml_element, &$recursion_depth=0) { } } -// 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 $s. -// Return an empty string if email-style addresses but webfinger fails, -// or if the resultant personal XRD doesn't contain a supported -// subscription/friend-request attribute. - -// amended 7/9/2011 to return an hcard which could save potentially loading -// a lengthy content page to scrape dfrn attributes - - -function webfinger_dfrn($s,&$hcard) { - if(! strstr($s,'@')) { - return $s; - } - $profile_link = ''; - - $links = webfinger($s); - logger('webfinger_dfrn: ' . $s . ':' . print_r($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 $profile_link; -} - -// Given an email style address, perform webfinger lookup and -// return the array of link attributes from the personal XRD file. -// On error/failure return an empty array. - - - -function webfinger($s, $debug = false) { - $host = ''; - if(strstr($s,'@')) { - $host = substr($s,strpos($s,'@') + 1); - } - if(strlen($host)) { - $tpl = fetch_lrdd_template($host); - logger('webfinger: lrdd template: ' . $tpl); - if(strlen($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); - logger('webfinger: pxrd: ' . $pxrd); - $links = fetch_xrd_links($pxrd); - } - 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') - $tpl = $link['@attributes']['template']; - } - if(! strpos($tpl,'{uri}')) - $tpl = ''; - return $tpl; -} - // Take a URL from the wild, prepend http:// if necessary // and check DNS to see if it's real (or check if is a valid IP address) // return true if it's OK, false if something is wrong with it @@ -912,3 +817,152 @@ function email_send($addr, $subject, $headers, $item) { logger('notifier: email delivery to ' . $addr); mail($addr, $subject, $body, $headers); } + + +function discover_by_webbie($webbie) { + + $x = webfinger_rfc7033($webbie); + if($x && array_key_exists('links',$x) && $x['links']) { + foreach($x['links'] as $link) { + if(array_key_exists('rel',$link) && $link['rel'] == 'http://purl.org/zot/protocol') { + logger('discover_by_webbie: zot found for ' . $webbie); + $z = z_fetch_url($link['href']); + if($z['success']) { + $j = json_decode($z['body'],true); + $i = import_xchan($j); + return true; + } + } + } + } + + $x = old_webfinger($webbie); + if($x) { + logger('old_webfinger: ' . print_r($x,true)); + } +} + + +function webfinger_rfc7033($webbie) { + + + if(! strpos($webbie,'@')) + return false; + $lhs = substr($webbie,0,strpos($webbie,'@')); + $rhs = substr($webbie,strpos($webbie,'@')+1); + + $resource = 'acct:' . $webbie; + + $s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?resource=' . $resource); + + if($s['success']) + $j = json_decode($s['body'],true); + else + return false; + return($j); +} + + +function old_webfinger($webbie) { + + $host = ''; + if(strstr($webbie,'@')) + $host = substr($webbie,strpos($webbie,'@') + 1); + + if(strlen($host)) { + $tpl = fetch_lrdd_template($host); + logger('old_webfinger: lrdd template: ' . $tpl,LOGGER_DATA); + if(strlen($tpl)) { + $pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl); + logger('old_webfinger: pxrd: ' . $pxrd,LOGGER_DATA); + $links = fetch_xrd_links($pxrd); + if(! count($links)) { + // try with double slashes + $pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl); + logger('old_webfinger: pxrd: ' . $pxrd,LOGGER_DATA); + $links = fetch_xrd_links($pxrd); + } + return $links; + } + } + return array(); +} + + +function fetch_lrdd_template($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: ' . $url1, LOGGER_DEBUG); + logger('template (https): ' . print_r($links,true),LOGGER_DEBUG); + if(! count($links)) { + logger('fetch_lrdd_template from: ' . $url2); + $links = fetch_xrd_links($url2); + logger('template (http): ' . print_r($links,true),LOGGER_DEBUG); + } + if(count($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 $tpl; + +} + + +function fetch_xrd_links($url) { + +logger('fetch_xrd_links: ' . $url); + + $redirects = 0; + $x = z_fetch_url($url,false,$redirects,array('timeout' => 20)); + + if(! $x['success']) + return array(); + + $xml = $x['body']; + 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(); + + $arr = convert_xml_element_to_array($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; +}
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