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Java example source code file (IssuerAlternativeNameExtension.java)
The IssuerAlternativeNameExtension.java Java example source code/* * Copyright (c) 1997, 2011, 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 GeneralNames 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); } } Other Java examples (source code examples)Here is a short list of links related to this Java IssuerAlternativeNameExtension.java source code file: |
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