/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.wss4j.stax.test.saml;

import org.apache.wss4j.common.crypto.Crypto;
import org.apache.wss4j.common.crypto.CryptoFactory;
import org.apache.wss4j.common.crypto.CryptoType;
import org.apache.wss4j.common.saml.SAMLCallback;
import org.apache.wss4j.common.saml.builder.SAML2Constants;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.UnsupportedCallbackException;
import java.io.IOException;

/**
 * A Callback Handler implementation for a SAML 2 assertion. By default it creates an
 * authentication assertion using Sender Vouches.
 */
public class SAML2CallbackHandler extends org.apache.wss4j.dom.common.SAML2CallbackHandler {

    private String issuerKeyName;
    private String issuerKeyPassword;
    private Crypto issuerCrypto;
    private boolean signAssertion = true;

    public SAML2CallbackHandler() throws Exception {
        Crypto crypto = CryptoFactory.getInstance("saml/saml-signed.properties");
        CryptoType cryptoType = new CryptoType(CryptoType.TYPE.ALIAS);
        cryptoType.setAlias("transmitter");
        certs = crypto.getX509Certificates(cryptoType);
        issuerKeyName = "samlissuer";
        issuerKeyPassword = "default";
        issuerCrypto = CryptoFactory.getInstance("saml/samlissuer.properties");

        subjectName = "uid=joe,ou=people,ou=saml-demo,o=example.com";
        subjectQualifier = "www.example.com";
        confirmationMethod = SAML2Constants.CONF_SENDER_VOUCHES;
        issuer = "www.example.com";
    }

    public void setSignAssertion(boolean signAssertion) {
        this.signAssertion = signAssertion;
    }

    @Override
    public void handle(Callback[] callbacks)
            throws IOException, UnsupportedCallbackException {

        super.handle(callbacks);

        for (int i = 0; i < callbacks.length; i++) {
            if (callbacks[i] instanceof SAMLCallback) {
                SAMLCallback callback = (SAMLCallback) callbacks[i];
                callback.setIssuerKeyName(issuerKeyName);
                callback.setIssuerKeyPassword(issuerKeyPassword);
                callback.setIssuerCrypto(issuerCrypto);
                callback.setSignAssertion(signAssertion);
            }
        }
    }
}