/*

 */

/*

 */

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

import javax.xml.crypto.*;

import javax.xml.crypto.dom.DOMCryptoContext;

import javax.xml.crypto.dsig.*;

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

import java.math.BigInteger;

import javax.security.auth.x500.X500Principal;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

/**

 * DOM-based implementation of X509IssuerSerial.

 *

 * @author Sean Mullan

 */

public final class DOMX509IssuerSerial extends DOMStructure

    implements X509IssuerSerial {

    private final String issuerName;

    private final BigInteger serialNumber;

    /**

     * Creates a <code>DOMX509IssuerSerial</code> 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</code>

     *    is not RFC 2253 compliant

     * @throws NullPointerException if <code>issuerName</code> or

     *    <code>serialNumber</code> is <code>null</code>

     */

    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</code> from an element.

     *

     * @param isElem an X509IssuerSerial element

     */

    public DOMX509IssuerSerial(Element isElem) {

        Element iNElem = DOMUtils.getFirstChildElement(isElem);

        Element sNElem = DOMUtils.getNextSiblingElement(iNElem);

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

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

    }

    public String getIssuerName() {

        return issuerName;

    }

    public BigInteger getSerialNumber() {

        return serialNumber;

    }

    public void marshal(Node parent, String dsPrefix, DOMCryptoContext context)

        throws MarshalException {

        Document ownerDoc = DOMUtils.getOwnerDocument(parent);

        Element isElem = DOMUtils.createElement

            (ownerDoc, "X509IssuerSerial", XMLSignature.XMLNS, dsPrefix);

        Element inElem = DOMUtils.createElement

            (ownerDoc, "X509IssuerName", XMLSignature.XMLNS, dsPrefix);

        Element snElem = DOMUtils.createElement

            (ownerDoc, "X509SerialNumber", XMLSignature.XMLNS, dsPrefix);

        inElem.appendChild(ownerDoc.createTextNode(issuerName));

        snElem.appendChild(ownerDoc.createTextNode(serialNumber.toString()));

        isElem.appendChild(inElem);

        isElem.appendChild(snElem);

        parent.appendChild(isElem);

    }

    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()));

    }

}