1 /* 2 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.security.x509; 27 28 import java.io.IOException; 29 import java.io.InputStream; 30 import java.io.OutputStream; 31 import java.util.Enumeration; 32 33 import javax.security.auth.x500.X500Principal; 34 35 import sun.security.util.*; 36 37 /** 38 * This class defines the X500Name attribute for the Certificate. 39 * 40 * @author Amit Kapoor 41 * @author Hemma Prafullchandra 42 * @see CertAttrSet 43 */ 44 public class CertificateIssuerName implements CertAttrSet<String> { 45 /** 46 * Identifier for this attribute, to be used with the 47 * get, set, delete methods of Certificate, x509 type. 48 */ 49 public static final String IDENT = "x509.info.issuer"; 50 /** 51 * Sub attributes name for this CertAttrSet. 52 */ 53 public static final String NAME = "issuer"; 54 public static final String DN_NAME = "dname"; 55 56 // accessor name for cached X500Principal only 57 // do not allow a set() of this value, do not advertise with getElements() 58 public static final String DN_PRINCIPAL = "x500principal"; 59 60 // Private data member 61 private X500Name dnName; 62 63 // cached X500Principal version of the name 64 private X500Principal dnPrincipal; 65 66 /** 67 * Default constructor for the certificate attribute. 68 * 69 * @param name the X500Name 70 */ 71 public CertificateIssuerName(X500Name name) { 72 this.dnName = name; 73 } 74 75 /** 76 * Create the object, decoding the values from the passed DER stream. 77 * 78 * @param in the DerInputStream to read the X500Name from. 79 * @exception IOException on decoding errors. 80 */ 81 public CertificateIssuerName(DerInputStream in) throws IOException { 82 dnName = new X500Name(in); 83 } 84 85 /** 86 * Create the object, decoding the values from the passed stream. 87 * 88 * @param in the InputStream to read the X500Name from. 89 * @exception IOException on decoding errors. 90 */ 91 public CertificateIssuerName(InputStream in) throws IOException { 92 DerValue derVal = new DerValue(in); 93 dnName = new X500Name(derVal); 94 } 95 96 /** 97 * Return the name as user readable string. 98 */ 99 public String toString() { 100 if (dnName == null) return ""; 101 return(dnName.toString()); 102 } 103 104 /** 105 * Encode the name in DER form to the stream. 106 * 107 * @param out the DerOutputStream to marshal the contents to. 108 * @exception IOException on errors. 109 */ 110 public void encode(OutputStream out) throws IOException { 111 DerOutputStream tmp = new DerOutputStream(); 112 dnName.encode(tmp); 113 114 out.write(tmp.toByteArray()); 115 } 116 117 /** 118 * Set the attribute value. 119 */ 120 public void set(String name, Object obj) throws IOException { 121 if (!(obj instanceof X500Name)) { 122 throw new IOException("Attribute must be of type X500Name."); 123 } 124 if (name.equalsIgnoreCase(DN_NAME)) { 125 this.dnName = (X500Name)obj; 126 this.dnPrincipal = null; 127 } else { 128 throw new IOException("Attribute name not recognized by " + 129 "CertAttrSet:CertificateIssuerName."); 130 } 131 } 132 133 /** 134 * Get the attribute value. 135 */ 136 public Object get(String name) throws IOException { 137 if (name.equalsIgnoreCase(DN_NAME)) { 138 return(dnName); 139 } else if (name.equalsIgnoreCase(DN_PRINCIPAL)) { 140 if ((dnPrincipal == null) && (dnName != null)) { 141 dnPrincipal = dnName.asX500Principal(); 142 } 143 return dnPrincipal; 144 } else { 145 throw new IOException("Attribute name not recognized by " + 146 "CertAttrSet:CertificateIssuerName."); 147 } 148 } 149 150 /** 151 * Delete the attribute value. 152 */ 153 public void delete(String name) throws IOException { 154 if (name.equalsIgnoreCase(DN_NAME)) { 155 dnName = null; 156 dnPrincipal = null; 157 } else { 158 throw new IOException("Attribute name not recognized by " + 159 "CertAttrSet:CertificateIssuerName."); 160 } 161 } 162 163 /** 164 * Return an enumeration of names of attributes existing within this 165 * attribute. 166 */ 167 public Enumeration<String> getElements() { 168 AttributeNameEnumeration elements = new AttributeNameEnumeration(); 169 elements.addElement(DN_NAME); 170 171 return (elements.elements()); 172 } 173 174 /** 175 * Return the name of this attribute. 176 */ 177 public String getName() { 178 return(NAME); 179 } 180 } 181
