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<?php
namespace Zotlabs\Module;
use Zotlabs\Web\HTTPSig;
use Zotlabs\Lib\Verify;
use Zotlabs\Web\Controller;
/**
* OpenWebAuth verifier and token generator
* See spec/OpenWebAuth/Home.md
* Requests to this endpoint should be signed using HTTP Signatures
* using the 'Authorization: Signature' authentication method
* If the signature verifies a token is returned.
*
* This token may be exchanged for an authenticated cookie.
*/
class Owa extends Controller {
function init() {
$ret = [ 'success' => false ];
if (array_key_exists('REDIRECT_REMOTE_USER',$_SERVER) && (! array_key_exists('HTTP_AUTHORIZATION',$_SERVER))) {
$_SERVER['HTTP_AUTHORIZATION'] = $_SERVER['REDIRECT_REMOTE_USER'];
}
if (array_key_exists('HTTP_AUTHORIZATION',$_SERVER) && substr(trim($_SERVER['HTTP_AUTHORIZATION']),0,9) === 'Signature') {
$sigblock = HTTPSig::parse_sigheader($_SERVER['HTTP_AUTHORIZATION']);
if ($sigblock) {
$keyId = $sigblock['keyId'];
if ($keyId) {
$r = q("SELECT * FROM hubloc LEFT JOIN xchan ON hubloc_hash = xchan_hash
WHERE hubloc_id_url = '%s'",
dbesc($keyId)
);
if (! $r) {
$found = discover_by_webbie(str_replace('acct:','',$keyId));
if ($found) {
$r = q("SELECT * FROM hubloc LEFT JOIN xchan ON hubloc_hash = xchan_hash
WHERE OR hubloc_id_url = '%s'",
dbesc($keyId)
);
}
}
if ($r) {
foreach ($r as $hubloc) {
$verified = HTTPSig::verify(file_get_contents('php://input'), $hubloc['xchan_pubkey']);
if ($verified && $verified['header_signed'] && $verified['header_valid'] && ($verified['content_valid'] || (! $verified['content_signed']))) {
logger('OWA header: ' . print_r($verified,true),LOGGER_DATA);
logger('OWA success: ' . $hubloc['hubloc_id_url'],LOGGER_DATA);
$ret['success'] = true;
$token = random_string(32);
Verify::create('owt',0,$token,$hubloc['hubloc_id_url']);
$result = '';
openssl_public_encrypt($token,$result,$hubloc['xchan_pubkey']);
$ret['encrypted_token'] = base64url_encode($result);
break;
} else {
logger('OWA fail: ' . $hubloc['hubloc_id'] . ' ' . $hubloc['hubloc_id_url']);
}
}
}
}
}
}
json_return_and_die($ret,'application/x-zot+json');
}
}
|
