/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/**

 * 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.

 */

/*

 * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * $Id: DOMX509IssuerSerial.java 1788465 2017-03-24 15:10:51Z coheigea $

 */

package org.jcp.xml.dsig.internal.dom;

import javax.xml.crypto.MarshalException;

import javax.xml.crypto.dsig.XMLSignature;

import javax.xml.crypto.dsig.keyinfo.X509IssuerSerial;

import java.math.BigInteger;

import javax.security.auth.x500.X500Principal;

import org.w3c.dom.Element;

/**

 * DOM-based implementation of X509IssuerSerial.

 *

 */

public final class DOMX509IssuerSerial extends BaseStructure

    implements X509IssuerSerial {

    private final String issuerName;

    private final BigInteger serialNumber;

    /**

     * Creates a {@code DOMX509IssuerSerial} containing the specified

     * issuer distinguished name/serial number pair.

     *

     * @param issuerName the X.509 issuer distinguished name in RFC 2253

     *    String format

     * @param serialNumber the serial number

     * @throws IllegalArgumentException if the format of {@code issuerName}

     *    is not RFC 2253 compliant

     * @throws NullPointerException if {@code issuerName} or

     *    {@code serialNumber} is {@code null}

     */

    public DOMX509IssuerSerial(String issuerName, BigInteger serialNumber) {

        if (issuerName == null) {

            throw new NullPointerException("issuerName cannot be null");

        }

        if (serialNumber == null) {

            throw new NullPointerException("serialNumber cannot be null");

        }

        // check that issuer distinguished name conforms to RFC 2253

        new X500Principal(issuerName);

        this.issuerName = issuerName;

        this.serialNumber = serialNumber;

    }

    /**

     * Creates a {@code DOMX509IssuerSerial} from an element.

     *

     * @param isElem an X509IssuerSerial element

     */

    public DOMX509IssuerSerial(Element isElem) throws MarshalException {

        Element iNElem = DOMUtils.getFirstChildElement(isElem,

                                                       "X509IssuerName",

                                                       XMLSignature.XMLNS);

        Element sNElem = DOMUtils.getNextSiblingElement(iNElem,

                                                        "X509SerialNumber",

                                                        XMLSignature.XMLNS);

        issuerName = iNElem.getFirstChild().getNodeValue();

        serialNumber = new BigInteger(sNElem.getFirstChild().getNodeValue());

    }

    @Override

    public String getIssuerName() {

        return issuerName;

    }

    @Override

    public BigInteger getSerialNumber() {

        return serialNumber;

    }

    @Override

    public boolean equals(Object obj) {

        if (this == obj) {

            return true;

        }

        if (!(obj instanceof X509IssuerSerial)) {

            return false;

        }

        X509IssuerSerial ois = (X509IssuerSerial)obj;

        return issuerName.equals(ois.getIssuerName()) &&

                serialNumber.equals(ois.getSerialNumber());

    }

    @Override

    public int hashCode() {

        int result = 17;

        result = 31 * result + issuerName.hashCode();

        result = 31 * result + serialNumber.hashCode();

        return result;

    }

}