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package sun.security.x509;

import java.io.IOException;
import java.io.OutputStream;
import java.security.cert.CRLReason;
import java.util.Enumeration;

import sun.security.util.*;


The reasonCode is a non-critical CRL entry extension that identifies
the reason for the certificate revocation.

Author:Hemma Prafullchandra
See Also:
/**
 * The reasonCode is a non-critical CRL entry extension that identifies
 * the reason for the certificate revocation.
 * @author Hemma Prafullchandra
 * @see java.security.cert.CRLReason
 * @see Extension
 * @see CertAttrSet
 */
public class CRLReasonCodeExtension extends Extension
        implements CertAttrSet<String> {

    
Attribute name

/**
     * Attribute name
     */
    public static final String NAME = "CRLReasonCode";
    public static final String REASON = "reason";

    private static CRLReason[] values = CRLReason.values();

    private int reasonCode = 0;

    private void encodeThis() throws IOException {
        if (reasonCode == 0) {
            this.extensionValue = null;
            return;
        }
        DerOutputStream dos = new DerOutputStream();
        dos.putEnumerated(reasonCode);
        this.extensionValue = dos.toByteArray();
    }

    
Create a CRLReasonCodeExtension with the passed in reason.
Criticality automatically set to false.

Params:
  • reason – the enumerated value for the reason code.
/**
     * Create a CRLReasonCodeExtension with the passed in reason.
     * Criticality automatically set to false.
     *
     * @param reason the enumerated value for the reason code.
     */
    public CRLReasonCodeExtension(int reason) throws IOException {
        this(false, reason);
    }

    
Create a CRLReasonCodeExtension with the passed in reason.

Params:
  • critical – true if the extension is to be treated as critical.
  • reason – the enumerated value for the reason code.
/**
     * Create a CRLReasonCodeExtension with the passed in reason.
     *
     * @param critical true if the extension is to be treated as critical.
     * @param reason the enumerated value for the reason code.
     */
    public CRLReasonCodeExtension(boolean critical, int reason)
    throws IOException {
        this.extensionId = PKIXExtensions.ReasonCode_Id;
        this.critical = critical;
        this.reasonCode = reason;
        encodeThis();
    }

    
Create the extension from the passed DER encoded value of the same.

Params:
  • critical – true if the extension is to be treated as critical.
  • value – an array of DER encoded bytes of the actual value.
Throws:
/**
     * Create the extension from the passed DER encoded value of the same.
     *
     * @param critical true if the extension is to be treated as critical.
     * @param value an array of DER encoded bytes of the actual value.
     * @exception ClassCastException if value is not an array of bytes
     * @exception IOException on error.
     */
    public CRLReasonCodeExtension(Boolean critical, Object value)
    throws IOException {
        this.extensionId = PKIXExtensions.ReasonCode_Id;
        this.critical = critical.booleanValue();
        this.extensionValue = (byte[]) value;
        DerValue val = new DerValue(this.extensionValue);
        this.reasonCode = val.getEnumerated();
    }

    
Set the attribute value.

/**
     * Set the attribute value.
     */
    public void set(String name, Object obj) throws IOException {
        if (!(obj instanceof Integer)) {
            throw new IOException("Attribute must be of type Integer.");
        }
        if (name.equalsIgnoreCase(REASON)) {
            reasonCode = ((Integer)obj).intValue();
        } else {
            throw new IOException
                ("Name not supported by CRLReasonCodeExtension");
        }
        encodeThis();
    }

    
Get the attribute value.

/**
     * Get the attribute value.
     */
    public Integer get(String name) throws IOException {
        if (name.equalsIgnoreCase(REASON)) {
            return new Integer(reasonCode);
        } else {
            throw new IOException
                ("Name not supported by CRLReasonCodeExtension");
        }
    }

    
Delete the attribute value.

/**
     * Delete the attribute value.
     */
    public void delete(String name) throws IOException {
        if (name.equalsIgnoreCase(REASON)) {
            reasonCode = 0;
        } else {
            throw new IOException
                ("Name not supported by CRLReasonCodeExtension");
        }
        encodeThis();
    }

    
Returns a printable representation of the Reason code.

/**
     * Returns a printable representation of the Reason code.
     */
    public String toString() {
        return super.toString() + "    Reason Code: " + getReasonCode();
    }

    
Write the extension to the DerOutputStream.

Params:
  • out – the DerOutputStream to write the extension to.
Throws:
/**
     * Write the extension to the DerOutputStream.
     *
     * @param out the DerOutputStream to write the extension to.
     * @exception IOException on encoding errors.
     */
    public void encode(OutputStream out) throws IOException {
        DerOutputStream  tmp = new DerOutputStream();

        if (this.extensionValue == null) {
            this.extensionId = PKIXExtensions.ReasonCode_Id;
            this.critical = false;
            encodeThis();
        }
        super.encode(tmp);
        out.write(tmp.toByteArray());
    }

    
Return an enumeration of names of attributes existing within this
attribute.

/**
     * Return an enumeration of names of attributes existing within this
     * attribute.
     */
    public Enumeration<String> getElements() {
        AttributeNameEnumeration elements = new AttributeNameEnumeration();
        elements.addElement(REASON);

        return elements.elements();
    }

    
Return the name of this attribute.

/**
     * Return the name of this attribute.
     */
    public String getName() {
        return NAME;
    }

    
Return the reason as a CRLReason enum.

/**
     * Return the reason as a CRLReason enum.
     */
    public CRLReason getReasonCode() {
        // if out-of-range, return UNSPECIFIED
        if (reasonCode > 0 && reasonCode < values.length) {
            return values[reasonCode];
        } else {
            return CRLReason.UNSPECIFIED;
        }
    }
}