| /* |
| * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.x509; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Enumeration; |
| |
| import sun.security.util.*; |
| |
| /** |
| * This represents the Issuer Alternative Name Extension. |
| * |
| * This extension, if present, allows the issuer to specify multiple |
| * alternative names. |
| * |
| * <p>Extensions are represented as a sequence of the extension identifier |
| * (Object Identifier), a boolean flag stating whether the extension is to |
| * be treated as being critical and the extension value itself (this is again |
| * a DER encoding of the extension value). |
| * |
| * @author Amit Kapoor |
| * @author Hemma Prafullchandra |
| * @see Extension |
| * @see CertAttrSet |
| */ |
| public class IssuerAlternativeNameExtension |
| extends Extension implements CertAttrSet<String> { |
| /** |
| * Identifier for this attribute, to be used with the |
| * get, set, delete methods of Certificate, x509 type. |
| */ |
| public static final String IDENT = |
| "x509.info.extensions.IssuerAlternativeName"; |
| /** |
| * Attribute names. |
| */ |
| public static final String NAME = "IssuerAlternativeName"; |
| public static final String ISSUER_NAME = "issuer_name"; |
| |
| // private data members |
| GeneralNames names = null; |
| |
| // Encode this extension |
| private void encodeThis() throws IOException { |
| if (names == null || names.isEmpty()) { |
| this.extensionValue = null; |
| return; |
| } |
| DerOutputStream os = new DerOutputStream(); |
| names.encode(os); |
| this.extensionValue = os.toByteArray(); |
| } |
| |
| /** |
| * Create a IssuerAlternativeNameExtension with the passed GeneralNames. |
| * |
| * @param names the GeneralNames for the issuer. |
| * @exception IOException on error. |
| */ |
| public IssuerAlternativeNameExtension(GeneralNames names) |
| throws IOException { |
| this.names = names; |
| this.extensionId = PKIXExtensions.IssuerAlternativeName_Id; |
| this.critical = false; |
| encodeThis(); |
| } |
| |
| /** |
| * Create a IssuerAlternativeNameExtension with the passed criticality |
| * and GeneralNames. |
| * |
| * @param critical true if the extension is to be treated as critical. |
| * @param names the GeneralNames for the issuer. |
| * @exception IOException on error. |
| */ |
| public IssuerAlternativeNameExtension(Boolean critical, GeneralNames names) |
| throws IOException { |
| this.names = names; |
| this.extensionId = PKIXExtensions.IssuerAlternativeName_Id; |
| this.critical = critical.booleanValue(); |
| encodeThis(); |
| } |
| |
| /** |
| * Create a default IssuerAlternativeNameExtension. |
| */ |
| public IssuerAlternativeNameExtension() { |
| extensionId = PKIXExtensions.IssuerAlternativeName_Id; |
| critical = false; |
| names = new GeneralNames(); |
| } |
| |
| /** |
| * Create the extension from the passed DER encoded value. |
| * |
| * @param critical true if the extension is to be treated as critical. |
| * @param value an array of DER encoded bytes of the actual value. |
| * @exception ClassCastException if value is not an array of bytes |
| * @exception IOException on error. |
| */ |
| public IssuerAlternativeNameExtension(Boolean critical, Object value) |
| throws IOException { |
| this.extensionId = PKIXExtensions.IssuerAlternativeName_Id; |
| this.critical = critical.booleanValue(); |
| this.extensionValue = (byte[]) value; |
| DerValue val = new DerValue(this.extensionValue); |
| if (val.data == null) { |
| names = new GeneralNames(); |
| return; |
| } |
| |
| names = new GeneralNames(val); |
| } |
| |
| /** |
| * Returns a printable representation of the IssuerAlternativeName. |
| */ |
| public String toString() { |
| |
| String result = super.toString() + "IssuerAlternativeName [\n"; |
| if(names == null) { |
| result += " null\n"; |
| } else { |
| for(GeneralName name: names.names()) { |
| result += " "+name+"\n"; |
| } |
| } |
| result += "]\n"; |
| return result; |
| } |
| |
| /** |
| * Write the extension to the OutputStream. |
| * |
| * @param out the OutputStream to write the extension to. |
| * @exception IOException on encoding error. |
| */ |
| public void encode(OutputStream out) throws IOException { |
| DerOutputStream tmp = new DerOutputStream(); |
| if (extensionValue == null) { |
| extensionId = PKIXExtensions.IssuerAlternativeName_Id; |
| critical = false; |
| encodeThis(); |
| } |
| super.encode(tmp); |
| out.write(tmp.toByteArray()); |
| } |
| |
| /** |
| * Set the attribute value. |
| */ |
| public void set(String name, Object obj) throws IOException { |
| if (name.equalsIgnoreCase(ISSUER_NAME)) { |
| if (!(obj instanceof GeneralNames)) { |
| throw new IOException("Attribute value should be of" + |
| " type GeneralNames."); |
| } |
| names = (GeneralNames)obj; |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:IssuerAlternativeName."); |
| } |
| encodeThis(); |
| } |
| |
| /** |
| * Get the attribute value. |
| */ |
| public Object get(String name) throws IOException { |
| if (name.equalsIgnoreCase(ISSUER_NAME)) { |
| return (names); |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:IssuerAlternativeName."); |
| } |
| } |
| |
| /** |
| * Delete the attribute value. |
| */ |
| public void delete(String name) throws IOException { |
| if (name.equalsIgnoreCase(ISSUER_NAME)) { |
| names = null; |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:IssuerAlternativeName."); |
| } |
| encodeThis(); |
| } |
| |
| /** |
| * Return an enumeration of names of attributes existing within this |
| * attribute. |
| */ |
| public Enumeration<String> getElements() { |
| AttributeNameEnumeration elements = new AttributeNameEnumeration(); |
| elements.addElement(ISSUER_NAME); |
| |
| return (elements.elements()); |
| } |
| |
| /** |
| * Return the name of this attribute. |
| */ |
| public String getName() { |
| return (NAME); |
| } |
| } |