Examples with IDPAuthnContextInfo com.sun.identity.saml2.plugins.IDPAuthnContextInfo used on opensource projects

Example 1 with IDPAuthnContextInfo

use of com.sun.identity.saml2.plugins.IDPAuthnContextInfo in project OpenAM by OpenRock.

the class DefaultIDPAuthnContextMapper method getIDPAuthnContextInfo.

/** 
    * Returns an <code>IDPAuthnContextInfo</code> object.
    *
    * @param authnRequest the <code>AuthnRequest</code> from the 
    * Service Provider
    * @param idpEntityID the Entity ID of the Identity Provider    
    * @param realm the realm to which the Identity Provider belongs
    * 
    * @return an <code>IDPAuthnContextInfo</code> object
    * @throws SAML2Exception if an error occurs.
    */
public IDPAuthnContextInfo getIDPAuthnContextInfo(AuthnRequest authnRequest, String idpEntityID, String realm) throws SAML2Exception {
    String classMethod = "DefaultIDPAuthnContextMapper.getIDPAuthnContextInfo: ";
    // Get the ClassRef to AuthnType and Value Map
    Map classRefSchemesMap = null;
    if (IDPCache.classRefSchemesHash != null) {
        classRefSchemesMap = (Map) IDPCache.classRefSchemesHash.get(idpEntityID + "|" + realm);
    }
    // Get the ClassRef to AuthN Level Map
    Map classRefLevelMap = null;
    if (IDPCache.classRefLevelHash != null) {
        classRefLevelMap = (Map) IDPCache.classRefLevelHash.get(idpEntityID + "|" + realm);
    }
    // If one of the Maps above was empty populate them
    if (classRefSchemesMap == null || classRefSchemesMap.isEmpty() || classRefLevelMap == null || classRefLevelMap.isEmpty()) {
        updateAuthnContextMapping(realm, idpEntityID);
        classRefSchemesMap = (Map) IDPCache.classRefSchemesHash.get(idpEntityID + "|" + realm);
        if (classRefSchemesMap == null) {
            classRefSchemesMap = new LinkedHashMap();
        }
        classRefLevelMap = (Map) IDPCache.classRefLevelHash.get(idpEntityID + "|" + realm);
        if (classRefLevelMap == null) {
            classRefLevelMap = new LinkedHashMap();
        }
    }
    // Look now for the Authn Class Ref that fulfills the request
    String classRef = null;
    Set authTypeAndValues = null;
    Integer authnLevel = null;
    RequestedAuthnContext requestedAuthnContext = null;
    if (authnRequest != null) {
        requestedAuthnContext = authnRequest.getRequestedAuthnContext();
    }
    if (requestedAuthnContext != null) {
        List requestedClassRefs = requestedAuthnContext.getAuthnContextClassRef();
        String comparison = requestedAuthnContext.getComparison();
        for (Iterator iter1 = requestedClassRefs.iterator(); iter1.hasNext(); ) {
            List singleClassRef = new ArrayList();
            singleClassRef.add((String) iter1.next());
            for (Iterator iter = classRefSchemesMap.keySet().iterator(); iter.hasNext(); ) {
                String tmpClassRef = (String) iter.next();
                if (isAuthnContextMatching(singleClassRef, tmpClassRef, comparison, realm, idpEntityID)) {
                    authTypeAndValues = (Set) classRefSchemesMap.get(tmpClassRef);
                    classRef = tmpClassRef;
                    authnLevel = (Integer) classRefLevelMap.get(tmpClassRef);
                    break;
                }
            }
            if (classRef != null) {
                break;
            }
        }
        if (classRef == null) {
            return null;
        }
    } else {
        authTypeAndValues = (Set) classRefSchemesMap.get(DEFAULT);
        classRef = (String) IDPCache.defaultClassRefHash.get(idpEntityID + "|" + realm);
        authnLevel = (Integer) classRefLevelMap.get(classRef);
        if (classRef == null) {
            classRef = SAML2Constants.CLASSREF_PASSWORD_PROTECTED_TRANSPORT;
        }
    }
    AuthnContext authnContext = AssertionFactory.getInstance().createAuthnContext();
    authnContext.setAuthnContextClassRef(classRef);
    IDPAuthnContextInfo info = new IDPAuthnContextInfo(authnContext, authTypeAndValues, authnLevel);
    if (SAML2Utils.debug.messageEnabled()) {
        SAML2Utils.debug.message(classMethod + "\nreturned AuthnContextClassRef=" + classRef + "\nauthTypeAndValues=" + authTypeAndValues + "\nauthnLevel=" + authnLevel);
    }
    return info;
}

Example 2 with IDPAuthnContextInfo

use of com.sun.identity.saml2.plugins.IDPAuthnContextInfo in project OpenAM by OpenRock.

the class UtilProxySAMLAuthenticator method authenticate.

@Override
public void authenticate() throws FederatedSSOException, IOException {
    final String classMethod = "UtilProxySAMLAuthenticator.authenticate: ";
    SPSSODescriptorElement spSSODescriptor = null;
    String preferredIDP;
    // There is no reqID, this is the first time that we pass here.
    String binding = SAML2Constants.HTTP_REDIRECT;
    if (request.getMethod().equals("POST")) {
        binding = SAML2Constants.HTTP_POST;
    }
    data.setAuthnRequest(getAuthnRequest(request, isFromECP, binding));
    if (data.getAuthnRequest() == null) {
        throw new ClientFaultException(data.getIdpAdapter(), INVALID_SAML_REQUEST);
    }
    data.getEventAuditor().setRequestId(data.getRequestID());
    data.setSpEntityID(data.getAuthnRequest().getIssuer().getValue());
    try {
        logAccess(isFromECP ? LogUtil.RECEIVED_AUTHN_REQUEST_ECP : LogUtil.RECEIVED_AUTHN_REQUEST, Level.INFO, data.getSpEntityID(), data.getIdpMetaAlias(), data.getAuthnRequest().toXMLString());
    } catch (SAML2Exception saml2ex) {
        SAML2Utils.debug.error(classMethod, saml2ex);
        throw new ClientFaultException(data.getIdpAdapter(), INVALID_SAML_REQUEST, saml2ex.getMessage());
    }
    if (!SAML2Utils.isSourceSiteValid(data.getAuthnRequest().getIssuer(), data.getRealm(), data.getIdpEntityID())) {
        SAML2Utils.debug.warning("{} Issuer in Request is not valid.", classMethod);
        throw new ClientFaultException(data.getIdpAdapter(), INVALID_SAML_REQUEST);
    }
    // verify the signature of the query string if applicable
    IDPSSODescriptorElement idpSSODescriptor;
    try {
        idpSSODescriptor = IDPSSOUtil.metaManager.getIDPSSODescriptor(data.getRealm(), data.getIdpEntityID());
    } catch (SAML2MetaException sme) {
        SAML2Utils.debug.error(classMethod + "Unable to get IDP SSO Descriptor from meta.");
        throw new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
    }
    try {
        spSSODescriptor = IDPSSOUtil.metaManager.getSPSSODescriptor(data.getRealm(), data.getSpEntityID());
    } catch (SAML2MetaException sme) {
        SAML2Utils.debug.error(classMethod + "Unable to get SP SSO Descriptor from meta.");
        SAML2Utils.debug.error(classMethod, sme);
    }
    if (isFromECP || idpSSODescriptor.isWantAuthnRequestsSigned() || (spSSODescriptor != null && spSSODescriptor.isAuthnRequestsSigned())) {
        // need to verify the query string containing authnRequest
        if (StringUtils.isBlank(data.getSpEntityID())) {
            throw new ClientFaultException(data.getIdpAdapter(), INVALID_SAML_REQUEST);
        }
        if (spSSODescriptor == null) {
            SAML2Utils.debug.error(classMethod + "Unable to get SP SSO Descriptor from meta.");
            throw new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
        }
        Set<X509Certificate> certificates = KeyUtil.getVerificationCerts(spSSODescriptor, data.getSpEntityID(), SAML2Constants.SP_ROLE);
        try {
            boolean isSignatureOK;
            if (isFromECP) {
                isSignatureOK = data.getAuthnRequest().isSignatureValid(certificates);
            } else {
                if ("POST".equals(request.getMethod())) {
                    isSignatureOK = data.getAuthnRequest().isSignatureValid(certificates);
                } else {
                    isSignatureOK = QuerySignatureUtil.verify(request.getQueryString(), certificates);
                }
            }
            if (!isSignatureOK) {
                SAML2Utils.debug.error(classMethod + "authn request verification failed.");
                throw new ClientFaultException(data.getIdpAdapter(), "invalidSignInRequest");
            }
            // In ECP profile, sp doesn't know idp.
            if (!isFromECP) {
                // verify Destination
                List ssoServiceList = idpSSODescriptor.getSingleSignOnService();
                String ssoURL = SPSSOFederate.getSSOURL(ssoServiceList, binding);
                if (!SAML2Utils.verifyDestination(data.getAuthnRequest().getDestination(), ssoURL)) {
                    SAML2Utils.debug.error(classMethod + "authn request destination verification failed.");
                    throw new ClientFaultException(data.getIdpAdapter(), "invalidDestination");
                }
            }
        } catch (SAML2Exception se) {
            SAML2Utils.debug.error(classMethod + "authn request verification failed.", se);
            throw new ClientFaultException(data.getIdpAdapter(), "invalidSignInRequest");
        }
        SAML2Utils.debug.message("{} authn request signature verification is successful.", classMethod);
    }
    SAML2Utils.debug.message("{} request id= {}", classMethod, data.getRequestID());
    if (data.getRequestID() == null) {
        SAML2Utils.debug.error(classMethod + "Request id is null");
        throw new ClientFaultException(data.getIdpAdapter(), "InvalidSAMLRequestID");
    }
    if (isFromECP) {
        try {
            IDPECPSessionMapper idpECPSessonMapper = IDPSSOUtil.getIDPECPSessionMapper(data.getRealm(), data.getIdpEntityID());
            data.setSession(idpECPSessonMapper.getSession(request, response));
        } catch (SAML2Exception se) {
            SAML2Utils.debug.message("Unable to retrieve user session.", classMethod);
        }
    } else {
        // get the user sso session from the request
        try {
            data.setSession(SessionManager.getProvider().getSession(request));
        } catch (SessionException se) {
            SAML2Utils.debug.message("{} Unable to retrieve user session.", classMethod);
        }
    }
    if (null != data.getSession()) {
        data.getEventAuditor().setAuthTokenId(data.getSession());
    }
    // will not trigger this adapter call
    if (preSingleSignOn(request, response, data)) {
        return;
    }
    // End of adapter invocation
    IDPAuthnContextMapper idpAuthnContextMapper = null;
    try {
        idpAuthnContextMapper = IDPSSOUtil.getIDPAuthnContextMapper(data.getRealm(), data.getIdpEntityID());
    } catch (SAML2Exception sme) {
        SAML2Utils.debug.error(classMethod, sme);
    }
    if (idpAuthnContextMapper == null) {
        SAML2Utils.debug.error(classMethod + "Unable to get IDPAuthnContextMapper from meta.");
        throw new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
    }
    IDPAuthnContextInfo idpAuthnContextInfo = null;
    try {
        idpAuthnContextInfo = idpAuthnContextMapper.getIDPAuthnContextInfo(data.getAuthnRequest(), data.getIdpEntityID(), data.getRealm());
    } catch (SAML2Exception sme) {
        SAML2Utils.debug.error(classMethod, sme);
    }
    if (idpAuthnContextInfo == null) {
        SAML2Utils.debug.message("{} Unable to find valid AuthnContext. Sending error Response.", classMethod);
        try {
            Response res = SAML2Utils.getErrorResponse(data.getAuthnRequest(), SAML2Constants.REQUESTER, SAML2Constants.NO_AUTHN_CONTEXT, null, data.getIdpEntityID());
            StringBuffer returnedBinding = new StringBuffer();
            String acsURL = IDPSSOUtil.getACSurl(data.getSpEntityID(), data.getRealm(), data.getAuthnRequest(), request, returnedBinding);
            String acsBinding = returnedBinding.toString();
            IDPSSOUtil.sendResponse(request, response, out, acsBinding, data.getSpEntityID(), data.getIdpEntityID(), data.getIdpMetaAlias(), data.getRealm(), data.getRelayState(), acsURL, res, data.getSession());
        } catch (SAML2Exception sme) {
            SAML2Utils.debug.error(classMethod, sme);
            throw new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
        }
        return;
    }
    // get the relay state query parameter from the request
    data.setRelayState(request.getParameter(SAML2Constants.RELAY_STATE));
    data.setMatchingAuthnContext(idpAuthnContextInfo.getAuthnContext());
    if (data.getSession() == null) {
        // the user has not logged in yet, redirect to auth
        redirectToAuth(spSSODescriptor, binding, idpAuthnContextInfo, data);
    } else {
        SAML2Utils.debug.message("{} There is an existing session", classMethod);
        // Let's verify that the realm is the same for the user and the IdP
        boolean isValidSessionInRealm = IDPSSOUtil.isValidSessionInRealm(data.getRealm(), data.getSession());
        String sessionIndex = IDPSSOUtil.getSessionIndex(data.getSession());
        boolean sessionUpgrade = false;
        if (isValidSessionInRealm) {
            sessionUpgrade = isSessionUpgrade(idpAuthnContextInfo, data.getSession());
            SAML2Utils.debug.message("{} IDP Session Upgrade is : {}", classMethod, sessionUpgrade);
        }
        // Holder for any exception encountered while redirecting for authentication:
        FederatedSSOException redirectException = null;
        if (sessionUpgrade || !isValidSessionInRealm || ((Boolean.TRUE.equals(data.getAuthnRequest().isForceAuthn())) && (!Boolean.TRUE.equals(data.getAuthnRequest().isPassive())))) {
            // sessionIndex
            if (sessionIndex != null && sessionIndex.length() != 0) {
                // Save the original IDP Session
                IDPSession oldIDPSession = IDPCache.idpSessionsByIndices.get(sessionIndex);
                if (oldIDPSession != null) {
                    IDPCache.oldIDPSessionCache.put(data.getRequestID(), oldIDPSession);
                } else {
                    SAML2Utils.debug.error(classMethod + "The old SAML2 session  was not found in the idp session " + "by indices cache");
                }
            }
            // Save the new requestId and AuthnRequest
            IDPCache.authnRequestCache.put(data.getRequestID(), new CacheObject(data.getAuthnRequest()));
            // Save the new requestId and AuthnContext
            IDPCache.idpAuthnContextCache.put(data.getRequestID(), new CacheObject(data.getMatchingAuthnContext()));
            // save if the request was an Session Upgrade case.
            IDPCache.isSessionUpgradeCache.add(data.getRequestID());
            // authenticates
            if (StringUtils.isNotBlank(data.getRelayState())) {
                IDPCache.relayStateCache.put(data.getRequestID(), data.getRelayState());
            }
            // Session upgrade could be requested by asking a greater AuthnContext
            if (isValidSessionInRealm) {
                try {
                    boolean isProxy = IDPProxyUtil.isIDPProxyEnabled(data.getAuthnRequest(), data.getRealm());
                    if (isProxy) {
                        preferredIDP = IDPProxyUtil.getPreferredIDP(data.getAuthnRequest(), data.getIdpEntityID(), data.getRealm(), request, response);
                        if (preferredIDP != null) {
                            if ((SPCache.reqParamHash != null) && (!(SPCache.reqParamHash.containsKey(preferredIDP)))) {
                                // IDP Proxy with configured proxy list
                                SAML2Utils.debug.message("{} IDP to be proxied {}", classMethod, preferredIDP);
                                IDPProxyUtil.sendProxyAuthnRequest(data.getAuthnRequest(), preferredIDP, spSSODescriptor, data.getIdpEntityID(), request, response, data.getRealm(), data.getRelayState(), binding);
                                return;
                            } else {
                                // IDP proxy with introduction cookie
                                Map paramsMap = (Map) SPCache.reqParamHash.get(preferredIDP);
                                paramsMap.put("authnReq", data.getAuthnRequest());
                                paramsMap.put("spSSODescriptor", spSSODescriptor);
                                paramsMap.put("idpEntityID", data.getIdpEntityID());
                                paramsMap.put("realm", data.getRealm());
                                paramsMap.put("relayState", data.getRelayState());
                                paramsMap.put("binding", binding);
                                SPCache.reqParamHash.put(preferredIDP, paramsMap);
                                return;
                            }
                        }
                    }
                //else continue for the local authentication.
                } catch (SAML2Exception re) {
                    SAML2Utils.debug.message("{} Redirecting for the proxy handling error: {}", classMethod, re.getMessage());
                    redirectException = new ServerFaultException(data.getIdpAdapter(), "UnableToRedirectToPreferredIDP", re.getMessage());
                }
            // End of IDP Proxy: Initiate proxying when session upgrade is requested
            }
            // Invoke the IDP Adapter before redirecting to authn
            if (preAuthenticationAdapter(request, response, data)) {
                return;
            }
            //we don't have a session
            try {
                //and they want to authenticate
                if (!Boolean.TRUE.equals(data.getAuthnRequest().isPassive())) {
                    redirectAuthentication(request, response, idpAuthnContextInfo, data, true);
                    return;
                } else {
                    try {
                        //and they want to get into the system with passive auth - response no passive
                        IDPSSOUtil.sendNoPassiveResponse(request, response, out, data.getIdpMetaAlias(), data.getIdpEntityID(), data.getRealm(), data.getAuthnRequest(), data.getRelayState(), data.getSpEntityID());
                    } catch (SAML2Exception sme) {
                        SAML2Utils.debug.error(classMethod, sme);
                        redirectException = new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
                    }
                }
            } catch (IOException | SAML2Exception e) {
                SAML2Utils.debug.error(classMethod + "Unable to redirect to authentication.", e);
                sessionUpgrade = false;
                cleanUpCache(data.getRequestID());
                redirectException = new ServerFaultException(data.getIdpAdapter(), "UnableToRedirectToAuth", e.getMessage());
            }
        }
        // generate assertion response
        if (!sessionUpgrade && isValidSessionInRealm) {
            generateAssertionResponse(data);
        }
        if (redirectException != null) {
            throw redirectException;
        }
    }
}

Example 3 with IDPAuthnContextInfo

use of com.sun.identity.saml2.plugins.IDPAuthnContextInfo in project OpenAM by OpenRock.

the class UtilProxySAMLAuthenticator method redirectToAuth.

private void redirectToAuth(SPSSODescriptorElement spSSODescriptor, String binding, IDPAuthnContextInfo idpAuthnContextInfo, IDPSSOFederateRequest data) throws IOException, ServerFaultException {
    String classMethod = "IDPSSOFederate.redirectToAuth";
    String preferredIDP;
    // retrieved later when the user successfully authenticates
    synchronized (IDPCache.authnRequestCache) {
        IDPCache.authnRequestCache.put(data.getRequestID(), new CacheObject(data.getAuthnRequest()));
    }
    // retrieved later when the user successfully authenticates
    synchronized (IDPCache.idpAuthnContextCache) {
        IDPCache.idpAuthnContextCache.put(data.getRequestID(), new CacheObject(data.getMatchingAuthnContext()));
    }
    // retrieved later when the user successfully authenticates
    if (StringUtils.isNotBlank(data.getRelayState())) {
        IDPCache.relayStateCache.put(data.getRequestID(), data.getRelayState());
    }
    //IDP Proxy: Initiate proxying
    try {
        boolean isProxy = IDPProxyUtil.isIDPProxyEnabled(data.getAuthnRequest(), data.getRealm());
        if (isProxy) {
            preferredIDP = IDPProxyUtil.getPreferredIDP(data.getAuthnRequest(), data.getIdpEntityID(), data.getRealm(), request, response);
            if (preferredIDP != null) {
                if ((SPCache.reqParamHash != null) && (!(SPCache.reqParamHash.containsKey(preferredIDP)))) {
                    // IDP Proxy with configured proxy list
                    SAML2Utils.debug.message("{} IDP to be proxied {} ", classMethod, preferredIDP);
                    IDPProxyUtil.sendProxyAuthnRequest(data.getAuthnRequest(), preferredIDP, spSSODescriptor, data.getIdpEntityID(), request, response, data.getRealm(), data.getRelayState(), binding);
                    return;
                } else {
                    // IDP proxy with introduction cookie
                    Map paramsMap = (Map) SPCache.reqParamHash.get(preferredIDP);
                    paramsMap.put("authnReq", data.getAuthnRequest());
                    paramsMap.put("spSSODescriptor", spSSODescriptor);
                    paramsMap.put("idpEntityID", data.getIdpEntityID());
                    paramsMap.put("realm", data.getRealm());
                    paramsMap.put("relayState", data.getRelayState());
                    paramsMap.put("binding", binding);
                    SPCache.reqParamHash.put(preferredIDP, paramsMap);
                    return;
                }
            }
        }
    //else continue for the local authentication.
    } catch (SAML2Exception re) {
        SAML2Utils.debug.message("{} Redirecting for the proxy handling error: {}", classMethod, re.getMessage());
        throw new ServerFaultException(data.getIdpAdapter(), "UnableToRedirectToPreferredIDP", re.getMessage());
    }
    // preAuthentication adapter hook
    if (preAuthenticationAdapter(request, response, data)) {
        return;
    }
    // redirect to the authentication service
    try {
        if (!Boolean.TRUE.equals(data.getAuthnRequest().isPassive())) {
            redirectAuthentication(request, response, idpAuthnContextInfo, data, false);
        } else {
            try {
                IDPSSOUtil.sendNoPassiveResponse(request, response, out, data.getIdpMetaAlias(), data.getIdpEntityID(), data.getRealm(), data.getAuthnRequest(), data.getRelayState(), data.getSpEntityID());
            } catch (SAML2Exception sme) {
                SAML2Utils.debug.error(classMethod, sme);
                throw new ServerFaultException(data.getIdpAdapter(), METADATA_ERROR);
            }
        }
    } catch (IOException | SAML2Exception e) {
        SAML2Utils.debug.error(classMethod + "Unable to redirect to authentication.", e);
        throw new ServerFaultException(data.getIdpAdapter(), "UnableToRedirectToAuth", e.getMessage());
    }
}

Example 4 with IDPAuthnContextInfo

use of com.sun.identity.saml2.plugins.IDPAuthnContextInfo in project OpenAM by OpenRock.

the class IDPSSOUtil method redirectAuthentication.

/**
     * Redirects to authenticate service
     *
     * @param request     the <code>HttpServletRequest</code> object
     * @param response    the <code>HttpServletResponse</code> object
     * @param authnReq    the <code>AuthnRequest</code> object
     * @param reqID       the <code>AuthnRequest ID</code>
     * @param realm       the realm name of the identity provider
     * @param idpEntityID the entity id of the identity provider
     * @param spEntityID  the entity id of the service provider
     */
static void redirectAuthentication(HttpServletRequest request, HttpServletResponse response, AuthnRequest authnReq, String reqID, String realm, String idpEntityID, String spEntityID) throws SAML2Exception, IOException {
    String classMethod = "IDPSSOUtil.redirectAuthentication: ";
    // get the authentication service url 
    StringBuffer newURL = new StringBuffer(IDPSSOUtil.getAuthenticationServiceURL(realm, idpEntityID, request));
    // Pass spEntityID to IdP Auth Module
    if (spEntityID != null) {
        if (newURL.indexOf("?") == -1) {
            newURL.append("?");
        } else {
            newURL.append("&");
        }
        newURL.append(SAML2Constants.SPENTITYID);
        newURL.append("=");
        newURL.append(URLEncDec.encode(spEntityID));
    }
    // find out the authentication method, e.g. module=LDAP, from
    // authn context mapping 
    IDPAuthnContextMapper idpAuthnContextMapper = getIDPAuthnContextMapper(realm, idpEntityID);
    IDPAuthnContextInfo info = idpAuthnContextMapper.getIDPAuthnContextInfo(authnReq, idpEntityID, realm);
    Set authnTypeAndValues = info.getAuthnTypeAndValues();
    if ((authnTypeAndValues != null) && (!authnTypeAndValues.isEmpty())) {
        Iterator iter = authnTypeAndValues.iterator();
        StringBuffer authSB = new StringBuffer((String) iter.next());
        while (iter.hasNext()) {
            authSB.append("&");
            authSB.append((String) iter.next());
        }
        if (newURL.indexOf("?") == -1) {
            newURL.append("?");
        } else {
            newURL.append("&");
        }
        newURL.append(authSB.toString());
        if (SAML2Utils.debug.messageEnabled()) {
            SAML2Utils.debug.message(classMethod + "authString=" + authSB.toString());
        }
    }
    if (newURL.indexOf("?") == -1) {
        newURL.append("?goto=");
    } else {
        newURL.append("&goto=");
    }
    String gotoURL = request.getRequestURL().toString();
    String gotoQuery = request.getQueryString();
    //to the login interface for authentication.
    if (gotoQuery != null) {
        gotoURL += "?" + gotoQuery + "&" + REDIRECTED_TRUE;
    } else {
        gotoURL += "?" + REDIRECTED_TRUE;
    }
    if (reqID != null) {
        gotoURL += "&ReqID=" + reqID;
    }
    if (SAML2Utils.debug.messageEnabled()) {
        SAML2Utils.debug.message(classMethod + "gotoURL=" + gotoURL);
    }
    newURL.append(URLEncDec.encode(gotoURL));
    if (SAML2Utils.debug.messageEnabled()) {
        SAML2Utils.debug.message(classMethod + "New URL for authentication: " + newURL.toString());
    }
    // TODO: here we should check if the new URL is one
    //       the same web container, if yes, forward,
    //       if not, redirect
    response.sendRedirect(newURL.toString());
    return;
}