/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed 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.keycloak.keys;

import org.keycloak.common.util.KeyUtils;
import org.keycloak.common.util.PemUtils;
import org.keycloak.component.ComponentModel;
import org.keycloak.crypto.KeyUse;
import org.keycloak.crypto.KeyWrapper;
import org.keycloak.models.RealmModel;

import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.X509Certificate;

/**
 * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
 */
public class ImportedRsaKeyProvider extends AbstractRsaKeyProvider {

    public ImportedRsaKeyProvider(RealmModel realm, ComponentModel model) {
        super(realm, model);
    }

    @Override
    public KeyWrapper loadKey(RealmModel realm, ComponentModel model) {
        String privateRsaKeyPem = model.getConfig().getFirst(Attributes.PRIVATE_KEY_KEY);
        String certificatePem = model.getConfig().getFirst(Attributes.CERTIFICATE_KEY);

        PrivateKey privateKey = PemUtils.decodePrivateKey(privateRsaKeyPem);
        PublicKey publicKey = KeyUtils.extractPublicKey(privateKey);

        KeyPair keyPair = new KeyPair(publicKey, privateKey);
        X509Certificate certificate = PemUtils.decodeCertificate(certificatePem);

        KeyUse keyUse = KeyUse.valueOf(model.get(Attributes.KEY_USE, KeyUse.SIG.name()).toUpperCase());

        return createKeyWrapper(keyPair, certificate, keyUse);
    }

}
