001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.geronimo.crypto.asn1.x509;
019
020 import org.apache.geronimo.crypto.asn1.ASN1Encodable;
021 import org.apache.geronimo.crypto.asn1.ASN1EncodableVector;
022 import org.apache.geronimo.crypto.asn1.ASN1Sequence;
023 import org.apache.geronimo.crypto.asn1.ASN1Set;
024 import org.apache.geronimo.crypto.asn1.DERObject;
025 import org.apache.geronimo.crypto.asn1.DERObjectIdentifier;
026 import org.apache.geronimo.crypto.asn1.DERSequence;
027
028 public class Attribute
029 extends ASN1Encodable
030 {
031 private DERObjectIdentifier attrType;
032 private ASN1Set attrValues;
033
034 /**
035 * return an Attribute object from the given object.
036 *
037 * @param o the object we want converted.
038 * @exception IllegalArgumentException if the object cannot be converted.
039 */
040 public static Attribute getInstance(
041 Object o)
042 {
043 if (o == null || o instanceof Attribute)
044 {
045 return (Attribute)o;
046 }
047
048 if (o instanceof ASN1Sequence)
049 {
050 return new Attribute((ASN1Sequence)o);
051 }
052
053 throw new IllegalArgumentException("unknown object in factory");
054 }
055
056 public Attribute(
057 ASN1Sequence seq)
058 {
059 attrType = (DERObjectIdentifier)seq.getObjectAt(0);
060 attrValues = (ASN1Set)seq.getObjectAt(1);
061 }
062
063 public Attribute(
064 DERObjectIdentifier attrType,
065 ASN1Set attrValues)
066 {
067 this.attrType = attrType;
068 this.attrValues = attrValues;
069 }
070
071 public DERObjectIdentifier getAttrType()
072 {
073 return attrType;
074 }
075
076 public ASN1Set getAttrValues()
077 {
078 return attrValues;
079 }
080
081 /**
082 * Produce an object suitable for an ASN1OutputStream.
083 * <pre>
084 * Attribute ::= SEQUENCE {
085 * attrType OBJECT IDENTIFIER,
086 * attrValues SET OF AttributeValue
087 * }
088 * </pre>
089 */
090 public DERObject toASN1Object()
091 {
092 ASN1EncodableVector v = new ASN1EncodableVector();
093
094 v.add(attrType);
095 v.add(attrValues);
096
097 return new DERSequence(v);
098 }
099 }