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 18package org.apache.harmony.security.x509; 19 20import java.io.IOException; 21import java.util.ArrayList; 22import java.util.Collection; 23import java.util.Iterator; 24import java.util.List; 25 26import org.apache.harmony.security.asn1.ASN1SequenceOf; 27import org.apache.harmony.security.asn1.ASN1Type; 28import org.apache.harmony.security.asn1.BerInputStream; 29import org.apache.harmony.security.internal.nls.Messages; 30 31/** 32 * The class encapsulates the ASN.1 DER encoding/decoding work 33 * with the SubjectInfoAccessSyntax and AuthorityInfoAccessSyntax 34 * which are a part of X.509 framework 35 * (as specified in RFC 3280 - 36 * Internet X.509 Public Key Infrastructure. 37 * Certificate and Certificate Revocation List (CRL) Profile. 38 * http://www.ietf.org/rfc/rfc3280.txt): 39 * 40 * SubjectInfoAccessSyntax ::= 41 * SEQUENCE SIZE (1..MAX) OF AccessDescriptions 42 43 * AuthorityInfoAccessSyntax ::= 44 * SEQUENCE SIZE (1..MAX) OF AccessDescriptions 45 * 46 * AccessDescription ::= SEQUENCE { 47 * accessMethod OBJECT IDENTIFIER, 48 * accessLocation GeneralName } 49 * 50 */ 51public class InfoAccessSyntax extends ExtensionValue { 52 53 private final List accessDescriptions; 54 55 public InfoAccessSyntax(List accessDescriptions) throws IOException { 56 this(accessDescriptions, null); 57 } 58 59 private InfoAccessSyntax(List accessDescriptions, byte[] encoding) 60 throws IOException { 61 if (accessDescriptions == null || accessDescriptions.isEmpty()) { 62 // "AccessDescriptions list is null or empty" 63 throw new IOException(Messages.getString("security.1A3")); //$NON-NLS-1$ 64 } 65 this.accessDescriptions = accessDescriptions; 66 this.encoding = encoding; 67 } 68 69 public List getAccessDescriptions() { 70 return new ArrayList(accessDescriptions); 71 } 72 73 /** 74 * Returns ASN.1 encoded form of this X.509 InfoAccessSyntax. 75 * @return a byte array containing ASN.1 encoded form. 76 */ 77 public byte[] getEncoded() { 78 if (encoding == null) { 79 encoding = ASN1.encode(this); 80 } 81 return encoding; 82 } 83 84 public static InfoAccessSyntax decode(byte[] encoding) throws IOException { 85 return ((InfoAccessSyntax) ASN1.decode(encoding)); 86 } 87 88 public String toString() { 89 StringBuilder res = new StringBuilder(); 90 res.append("\n---- InfoAccessSyntax:"); //$NON-NLS-1$ 91 if (accessDescriptions != null) { 92 for (Iterator it = accessDescriptions.iterator(); it.hasNext();) { 93 res.append('\n'); 94 res.append(it.next()); 95 } 96 } 97 res.append("\n---- InfoAccessSyntax END\n"); //$NON-NLS-1$ 98 return res.toString(); 99 } 100 101 /** 102 * Places the string representation of extension value 103 * into the StringBuffer object. 104 */ 105 public void dumpValue(StringBuffer buffer, String prefix) { 106 buffer.append(prefix).append("AccessDescriptions:\n"); //$NON-NLS-1$ 107 if (accessDescriptions == null || accessDescriptions.isEmpty()) { 108 buffer.append("NULL\n"); //$NON-NLS-1$ 109 } else { 110 Iterator itr = accessDescriptions.iterator(); 111 while (itr.hasNext()) { 112 buffer.append(itr.next().toString()); 113 } 114 } 115 } 116 117 118 /** 119 * ASN.1 DER X.509 AuthorityInfoAccessSyntax and SubjectInfoAccessSyntax 120 * encoder/decoder class. 121 */ 122 public static final ASN1Type ASN1 = new ASN1SequenceOf(AccessDescription.ASN1) { 123 124 public Object getDecodedObject(BerInputStream in) throws IOException { 125 return new InfoAccessSyntax((List)in.content, in.getEncoded()); 126 } 127 128 public Collection getValues(Object object) { 129 InfoAccessSyntax aias = (InfoAccessSyntax) object; 130 return aias.accessDescriptions; 131 } 132 }; 133 134} 135 136