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<?php
namespace Zotlabs\Module;
use Zotlabs\Lib\Keyutils;
use Zotlabs\Lib\Libzot;
class Wfinger extends \Zotlabs\Web\Controller {
function init() {
session_write_close();
$result = array();
$scheme = '';
if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
$scheme = 'https';
elseif(x($_SERVER,'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443))
$scheme = 'https';
elseif(x($_SERVER,'HTTP_X_FORWARDED_PROTO') && ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https'))
$scheme = 'https';
$zot = $_REQUEST['zot'] ?? '';
if(($scheme !== 'https') && (! $zot)) {
header($_SERVER["SERVER_PROTOCOL"] . ' ' . 500 . ' ' . 'Webfinger requires HTTPS');
killme();
}
$resource = $_REQUEST['resource'];
logger('webfinger: ' . $resource,LOGGER_DEBUG);
$root_resource = false;
$pchan = false;
if(strcasecmp(rtrim($resource,'/'),z_root()) === 0)
$root_resource = true;
$r = null;
if(($resource) && (! $root_resource)) {
if(strpos($resource,'acct:') === 0) {
$channel = str_replace('acct:','',$resource);
if(substr($channel,0,1) === '@' && strpos(substr($channel,1),'@')) {
$channel = substr($channel,1);
}
if(strpos($channel,'@') !== false) {
$host = substr($channel,strpos($channel,'@')+1);
// If the webfinger address points off site, redirect to the correct site
if(strcasecmp($host,\App::get_hostname())) {
goaway('https://' . $host . '/.well-known/webfinger?f=&resource=' . $resource . (($zot) ? '&zot=' . $zot : ''));
}
$channel = substr($channel,0,strpos($channel,'@'));
}
}
if(strpos($resource,'http') === 0) {
$channel = str_replace('~','',basename($resource));
}
if(substr($channel,0,1) === '[' ) {
$channel = substr($channel,1);
$channel = substr($channel,0,-1);
$pchan = true;
$r = q("select * from pchan left join xchan on pchan_hash = xchan_hash
where pchan_guid = '%s' limit 1",
dbesc($channel)
);
if($r) {
$r = pchan_to_chan($r[0]);
}
}
else {
// Also provide already deleted channels info here.
// This is required in the case where we need to verify keys
// of updates which we have got via directory sync.
$r = channelx_by_nick($channel, true);
}
}
header('Access-Control-Allow-Origin: *');
if($root_resource) {
$result['subject'] = $resource;
$result['properties'] = [
'https://w3id.org/security/v1#publicKeyPem' => get_config('system','pubkey')
];
$result['links'] = [
[
'rel' => 'http://purl.org/openwebauth/v1',
'type' => 'application/x-zot+json',
'href' => z_root() . '/owa',
],
];
}
if($resource && $r) {
$h = q("select hubloc_addr from hubloc where hubloc_hash = '%s' and hubloc_deleted = 0",
dbesc($r['channel_hash'])
);
$result['subject'] = $resource;
$aliases = array(
z_root() . (($pchan) ? '/pchan/' : '/channel/') . $r['channel_address'],
z_root() . '/~' . $r['channel_address'],
z_root() . '/@' . $r['channel_address']
);
if($h) {
foreach($h as $hh) {
$aliases[] = 'acct:' . $hh['hubloc_addr'];
}
}
$result['aliases'] = [];
$result['properties'] = [
'http://webfinger.net/ns/name' => $r['channel_name'],
'http://xmlns.com/foaf/0.1/name' => $r['channel_name'],
'https://w3id.org/security/v1#publicKeyPem' => $r['xchan_pubkey'],
'http://purl.org/zot/federation' => 'zot6'
];
foreach($aliases as $alias)
if($alias != $resource)
$result['aliases'][] = $alias;
if($pchan) {
$result['links'] = [
[
'rel' => 'http://webfinger.net/rel/avatar',
'type' => $r['xchan_photo_mimetype'],
'href' => $r['xchan_photo_l']
],
[
'rel' => 'http://webfinger.net/rel/profile-page',
'href' => $r['xchan_url'],
],
[
'rel' => 'magic-public-key',
'href' => 'data:application/magic-public-key,' . Keyutils::salmonKey($r['channel_pubkey']),
]
];
}
else {
$result['links'] = [
[
'rel' => 'http://webfinger.net/rel/avatar',
'type' => $r['xchan_photo_mimetype'],
'href' => $r['xchan_photo_l']
],
[
'rel' => 'http://microformats.org/profile/hcard',
'type' => 'text/html',
'href' => z_root() . '/hcard/' . $r['channel_address']
],
[
'rel' => 'http://openid.net/specs/connect/1.0/issuer',
'href' => z_root()
],
[
'rel' => 'http://webfinger.net/rel/profile-page',
'href' => z_root() . '/profile/' . $r['channel_address'],
],
[
'rel' => 'http://webfinger.net/rel/blog',
'href' => z_root() . '/channel/' . $r['channel_address'],
],
[
'rel' => 'http://ostatus.org/schema/1.0/subscribe',
'template' => z_root() . '/follow?f=&url={uri}',
],
[
'rel' => 'http://purl.org/zot/protocol/6.0',
'type' => 'application/x-zot+json',
'href' => channel_url($r)
],
[
'rel' => 'http://purl.org/openwebauth/v1',
'type' => 'application/x-zot+json',
'href' => z_root() . '/owa',
],
[
'rel' => 'magic-public-key',
'href' => 'data:application/magic-public-key,' . Keyutils::salmonKey($r['channel_pubkey']),
]
];
}
if($zot) {
// get a zotinfo packet and return it with webfinger
$result['zot'] = Libzot::zotinfo( [ 'address' => $r['xchan_addr'] ]);
}
}
if(! $result) {
header($_SERVER["SERVER_PROTOCOL"] . ' ' . 400 . ' ' . 'Bad Request');
killme();
}
$arr = [ 'channel' => $r, 'pchan' => $pchan, 'request' => $_REQUEST, 'result' => $result ];
call_hooks('webfinger',$arr);
json_return_and_die($arr['result'],'application/jrd+json');
}
}
|
