/**
* The application does not want to verify the authenticity of the app list,
* so it's valid - even if signed by someone else.
*/
public function testUnsignedValid()
{
list($caKeyPair, $caCert) = $this->createCA();
$distPointKeyPair = KeyPair::create();
$distPointCert = CA::signCSR($caKeyPair, $caCert, CA::createDirSvcCSR($distPointKeyPair, 'O=Someone, CN=else'));
$msg = new AppMetasMessage($distPointCert, $distPointKeyPair, array('app-2' => array('appId' => 'app-2')));
$appMetas = AppMetasMessage::decode(NULL, $msg->encode())->getData();
$this->assertEquals('app-2', $appMetas['app-2']['appId']);
}
/**
* @param CertificateValidatorInterface|NULL $certValidator
* @param string $blob
* @return AppMetasMessage
* Validated message.
* @throws InvalidMessageException
*/
public static function decode($certValidator, $blob)
{
$parts = explode(Constants::PROTOCOL_DELIM, $blob, 4);
if (count($parts) != 4) {
throw new InvalidMessageException('Invalid message: insufficient parameters');
}
list($wireProt, $wireCert, $wireSig, $wireEnvelope) = $parts;
if ($wireProt != self::NAME) {
throw new InvalidMessageException('Invalid message: wrong protocol name');
}
if ($certValidator !== NULL) {
$certValidator->validateCert($wireCert);
$wireCertX509 = new \File_X509();
$wireCertX509->loadX509($wireCert);
$cn = $wireCertX509->getDNProp('CN');
if (count($cn) != 1 || $cn[0] != Constants::OFFICIAL_APPMETAS_CN) {
throw new InvalidMessageException('Invalid message: signed by unauthorized party');
}
$isValid = UserError::adapt('Civi\\Cxn\\Rpc\\Exception\\InvalidMessageException', function () use($wireCertX509, $wireEnvelope, $wireSig) {
return AppMetasMessage::getRsaFromCert($wireCertX509)->verify($wireEnvelope, base64_decode($wireSig));
});
if (!$isValid) {
throw new InvalidMessageException("Invalid message: incorrect signature");
}
}
$envelope = json_decode($wireEnvelope, TRUE);
if (empty($envelope)) {
throw new InvalidMessageException("Invalid message: malformed envelope");
}
if (Time::getTime() > $envelope['ttl']) {
throw new InvalidMessageException("Invalid message: expired");
}
return new AppMetasMessage($wireCert, NULL, json_decode($envelope['r'], TRUE));
}
/**
* @param array|string $formats
* @param string $blob
* @return Message
* @throws InvalidMessageException
*/
public function decode($formats, $blob)
{
$formats = (array) $formats;
$prefixLen = 0;
foreach ($formats as $format) {
$prefixLen = max($prefixLen, strlen($format));
}
list($prefix) = explode(Constants::PROTOCOL_DELIM, substr($blob, 0, $prefixLen + 1));
if (!in_array($prefix, $formats)) {
if (in_array(GarbledMessage::NAME, $formats)) {
return GarbledMessage::decode($blob);
} else {
throw new InvalidMessageException("Unexpected message type.");
}
}
switch ($prefix) {
case StdMessage::NAME:
return StdMessage::decode($this->cxnStore, $blob);
case InsecureMessage::NAME:
return InsecureMessage::decode($blob);
case RegistrationMessage::NAME:
return RegistrationMessage::decode($this->appStore, $blob);
case AppMetasMessage::NAME:
return AppMetasMessage::decode($this->certValidator, $blob);
default:
throw new InvalidMessageException("Unrecognized message type.");
}
}