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/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (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.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2006 Ola Bini 
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.ext.openssl;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERSet;
import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyModule;
import org.jruby.RubyObject;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.builtin.IRubyObject;

/**
 * @author Ola Bini
 */
public class Attribute extends RubyObject {
    private static final long serialVersionUID = 5569940260019783275L;

    private static ObjectAllocator ATTRIBUTE_ALLOCATOR = new ObjectAllocator() {
        public IRubyObject allocate(Ruby runtime, RubyClass klass) {
            return new Attribute(runtime, klass);
        }
    };
    
    public static void createAttribute(Ruby runtime, RubyModule mX509) {
        RubyClass cAttribute = mX509.defineClassUnder("Attribute",runtime.getObject(), ATTRIBUTE_ALLOCATOR);

        RubyClass openSSLError = runtime.getModule("OpenSSL").getClass("OpenSSLError");
        mX509.defineClassUnder("AttributeError",openSSLError, openSSLError.getAllocator());

        cAttribute.defineAnnotatedMethods(Attribute.class);
    }

    public Attribute(Ruby runtime, RubyClass type) {
        super(runtime,type);
    }

    private IRubyObject oid;
    private IRubyObject value;

    private DERObjectIdentifier getObjectIdentifier(String nameOrOid) {
        Object val1 = ASN1.getOIDLookup(getRuntime()).get(nameOrOid.toLowerCase());
        if(null != val1) {
            return (DERObjectIdentifier)val1;
        }
        DERObjectIdentifier val2 = new DERObjectIdentifier(nameOrOid);
        return val2;
    }

    DERObject toASN1() {
        ASN1EncodableVector v1 = new ASN1EncodableVector();
        v1.add(getObjectIdentifier(oid.toString()));
        if(value instanceof ASN1.ASN1Constructive) {
            v1.add(((ASN1.ASN1Constructive)value).toASN1());
        } else {
            ASN1EncodableVector v2 = new ASN1EncodableVector();
            v2.add(((ASN1.ASN1Data)value).toASN1());
            v1.add(new DERSet(v2));
        }
        return new DERSequence(v1);
    }

    @JRubyMethod(name="initialize", required=1, optional=1)
    public IRubyObject _initialize(IRubyObject[] str) {
        if(org.jruby.runtime.Arity.checkArgumentCount(getRuntime(),str,1,2) == 1) {
            IRubyObject _oid = OpenSSLImpl.to_der_if_possible(str[0]);
            set_oid(_oid);
            return this;
        }
        set_oid(str[0]);
        set_value(str[1]);
        return this;
    }

    @JRubyMethod
    public IRubyObject to_der() {
        System.err.println("WARNING: unimplemented method called: attr#to_der");
        return getRuntime().getNil();
    }

    @JRubyMethod
    public IRubyObject oid() {
        return oid;
    }

    @JRubyMethod(name="oid=")
    public IRubyObject set_oid(IRubyObject val) {
        this.oid = val;
        return val;
    }

    @JRubyMethod
    public IRubyObject value() {
        return value;
    }

    @JRubyMethod(name="value=")
    public IRubyObject set_value(IRubyObject val) {
        IRubyObject tmp = OpenSSLImpl.to_der_if_possible(val);
        this.value = ASN1.decode(getRuntime().getClassFromPath("OpenSSL::ASN1"), tmp);
        return val;
    }
}// Attribute