1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /** 19 * @author Vladimir N. Molotkov, Stepan M. Mishura 20 * @version $Revision$ 21 */ 22 23 package org.apache.harmony.security.asn1; 24 25 import java.io.IOException; 26 27 28 /** 29 * This class represents ASN.1 ANY type. 30 * 31 * @see <a href="http://asn1.elibel.tm.fr/en/standards/index.htm">ASN.1</a> 32 */ 33 public final class ASN1Any extends ASN1Type { 34 35 /** default implementation */ 36 private static final ASN1Any ASN1= new ASN1Any(); 37 38 /** 39 * Constructs ASN.1 ANY type 40 * 41 * The constructor is provided for inheritance purposes 42 * when there is a need to create a custom ASN.1 ANY type. 43 * To get a default implementation it is recommended to use 44 * getInstance() method. 45 */ 46 public ASN1Any() { 47 super(TAG_ANY); // has not tag number 48 } 49 50 /** 51 * Returns ASN.1 ANY type default implementation 52 * 53 * The default implementation works with full encoding 54 * that is represented as raw byte array. 55 * 56 * @return ASN.1 ANY type default implementation 57 */ 58 public static ASN1Any getInstance() { 59 return ASN1; 60 } 61 62 /** 63 * Tests provided identifier. 64 * 65 * @param identifier - identifier to be verified 66 * @return - true 67 */ 68 public final boolean checkTag(int identifier) { 69 return true; //all tags are OK 70 } 71 72 public Object decode(BerInputStream in) throws IOException { 73 // only read content, doesn't check it 74 in.readContent(); 75 76 if (in.isVerify) { 77 return null; 78 } 79 return getDecodedObject(in); 80 } 81 82 /** 83 * Extracts array of bytes that represents full encoding from BER input 84 * stream. 85 * 86 * @param in BER input stream 87 * @return array of bytes 88 */ 89 public Object getDecodedObject(BerInputStream in) throws IOException { 90 byte[] bytesEncoded = new byte[in.offset - in.tagOffset]; 91 System.arraycopy(in.buffer, in.tagOffset, bytesEncoded, 0, 92 bytesEncoded.length); 93 return bytesEncoded; 94 } 95 96 public void encodeASN(BerOutputStream out) { 97 out.encodeANY(); 98 } 99 100 public void encodeContent(BerOutputStream out) { 101 out.encodeANY(); 102 } 103 104 public void setEncodingContent(BerOutputStream out) { 105 out.length = ((byte[]) out.content).length; 106 } 107 108 public int getEncodedLength(BerOutputStream out) { 109 return out.length; 110 } 111 } 112