protected AuthnRequest getAuthnRequest(AuthenticationContext context) throws SAMLSSOException {
AuthnRequest authnRequest = null;
AuthenticationRequest authenticationRequest = context.getAuthenticationRequest();
String[] samlRequestParams =
authenticationRequest.getRequestQueryParam(SSOConstants.HTTP_POST_PARAM_SAML2_AUTH_REQ);
String samlRequest = null;
if (samlRequestParams != null && samlRequestParams.length > 0) {
samlRequest = samlRequestParams[0];
XMLObject xmlObject;
if (authenticationRequest.isPost()) {
xmlObject = unmarshall(SSOUtils.decodeForPost(samlRequest));
} else {
xmlObject = unmarshall(SSOUtils.decode(samlRequest));
}
if (xmlObject instanceof AuthnRequest) {
authnRequest = (AuthnRequest) xmlObject;
}
}
return authnRequest;
}
