001    /*
002     * Copyright (c) 2000 - 2006 The Legion Of The Bouncy Castle (http://www.bouncycastle.org)
003     * 
004     * Permission is hereby granted, free of charge, to any person obtaining a copy of this
005     * software and associated documentation files (the "Software"), to deal in the Software
006     * without restriction, including without limitation the rights to use, copy, modify,
007     * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
008     * permit persons to whom the Software is furnished to do so, subject to the following
009     * conditions:
010     * 
011     * The above copyright notice and this permission notice shall be included in all copies
012     * or substantial portions of the Software.
013     * 
014     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
015     * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
016     * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
017     * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
018     * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
019     * DEALINGS IN THE SOFTWARE.
020     * 
021     */
022    
023    package org.apache.directory.shared.asn1.der;
024    
025    
026    import java.io.ByteArrayOutputStream;
027    import java.io.IOException;
028    
029    
030    /**
031     * DER Application Specific object.
032     */
033    public class DERApplicationSpecific extends DERObject
034    {
035        private int tag;
036    
037    
038        /**
039         * Basic DERObject constructor.
040         */
041        public DERApplicationSpecific(int tag, byte[] value)
042        {
043            super( tag, value );
044            this.tag = tag;
045        }
046    
047    
048        /**
049         * Static factory method, type-conversion operator.
050         */
051        public static DERApplicationSpecific valueOf( int tag, DEREncodable object ) throws IOException
052        {
053            tag = tag | CONSTRUCTED;
054    
055            ByteArrayOutputStream baos = new ByteArrayOutputStream();
056            ASN1OutputStream aos = new ASN1OutputStream( baos );
057    
058            aos.writeObject( object );
059    
060            return new DERApplicationSpecific( tag, baos.toByteArray() );
061        }
062    
063    
064        public int getApplicationTag()
065        {
066            return tag & 0x1F;
067        }
068    
069    
070        public DEREncodable getObject() throws IOException
071        {   
072            final ASN1InputStream ais = new ASN1InputStream( getOctets() );
073            try
074            {
075                return ais.readObject();
076            }
077            finally
078            {
079                ais.close();
080            }
081        }
082    
083    
084        public void encode( ASN1OutputStream out ) throws IOException
085        {
086            out.writeEncoded( APPLICATION | tag, value );
087        }
088    }