org.glite.voms.ac.GenericAttribute.java Source code

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Here is the source code for org.glite.voms.ac.GenericAttribute.java

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/*********************************************************************
 *
 * Authors: Vincenzo Ciaschini - Vincenzo.Ciaschini@cnaf.infn.it
 *
 * Copyright (c) 2002, 2003, 2004, 2005, 2006 INFN-CNAF on behalf of the 
 * EGEE project.
 * For license conditions see LICENSE
 *
 * Parts of this code may be based upon or even include verbatim pieces,
 * originally written by other people, in which case the original header
 * follows.
 *
 *********************************************************************/
package org.glite.voms.ac;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEREncodableVector;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;

/**
 * This class represents the single Generic Attribute.
 *
 * @author Vincenzo Ciaschini
 */
public class GenericAttribute implements ASN1Encodable {
    private String name;
    private String value;
    private String qualifier;

    /**
     * Empty contructor
     */
    public GenericAttribute() {
        name = value = qualifier = null;
    }

    /**
     * Creates a GenericAttributes object from a sequence.
     *
     * @param seq the Sequence
     *
     * @throws IllegalArgumentException if there are parsing problems.
     */
    public GenericAttribute(ASN1Sequence seq) {
        if (seq.size() != 3)
            throw new IllegalArgumentException("Encoding error in GenericAttribute");

        name = value = qualifier = null;

        if ((seq.getObjectAt(0) instanceof ASN1OctetString) && (seq.getObjectAt(1) instanceof ASN1OctetString)
                && (seq.getObjectAt(2) instanceof ASN1OctetString)) {
            value = new String(DEROctetString.getInstance(seq.getObjectAt(1)).getOctets());
            name = new String(DEROctetString.getInstance(seq.getObjectAt(0)).getOctets());
            qualifier = new String(DEROctetString.getInstance(seq.getObjectAt(2)).getOctets());
        } else
            throw new IllegalArgumentException("Encoding error in GenericAttribute");
    }

    /**
     * Static variant of the constructor.
     *
     * @see #GenericAttribute(ASN1Sequence seq)
     */
    public static GenericAttribute getInstance(ASN1Sequence seq) {
        return new GenericAttribute(seq);
    }

    /**
     * Gets the name of the attribute
     *
     * @return the name
     */
    public String getName() {
        return name;
    }

    /**
     * Gets the value of the attribute
     *
     * @return the value
     */
    public String getValue() {
        return value;
    }

    /**
     * Gets the qualifier of the attribute
     *
     * @return the qualifier
     */
    public String getQualifier() {
        return qualifier;
    }

    /**
     * Makes a DERObject representation.
     *
     * @return the DERObject
     */
    public ASN1Primitive toASN1Primitive() {
        DEREncodableVector v = new DEREncodableVector();

        v.add(new DEROctetString(name.getBytes()));
        v.add(new DEROctetString(value.getBytes()));
        v.add(new DEROctetString(qualifier.getBytes()));

        return new DERSequence(v);
    }
}