public function onMagicsigPublicKeyFromXRD(XML_XRD $xrd, &$pubkey)
{
// See if we have a Diaspora public key in the XRD response
$link = $xrd->get(self::REL_PUBLIC_KEY, 'RSA');
if (!is_null($link)) {
// If we do, decode it so we have the PKCS1 format (starts with -----BEGIN PUBLIC KEY-----)
$pkcs1 = base64_decode($link->href);
$magicsig = new Magicsig(Magicsig::DEFAULT_SIGALG);
// Diaspora uses RSA-SHA256 (we do too)
try {
// Try to load the public key so we can get it in the standard Magic signature format
$magicsig->loadPublicKeyPKCS1($pkcs1);
// We found it and will now store it in $pubkey in a proper format!
// This is how it would be found in a well implemented XRD according to the standard.
$pubkey = 'data:application/magic-public-key,' . $magicsig->toString();
common_debug('magic-public-key found in diaspora-public-key: ' . $pubkey);
return false;
} catch (ServerException $e) {
common_log(LOG_WARNING, $e->getMessage());
}
}
return true;
}
