--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/x509/SubjectAlternativeNameExtension.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,237 @@
+/*
+ * Copyright 1997-2006 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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 Subject Alternative Name Extension.
+ *
+ * This extension, if present, allows the subject 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).
+ * <p>
+ * The ASN.1 syntax for this is:
+ * <pre>
+ * SubjectAltName ::= GeneralNames
+ * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
+ * </pre>
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ * @see Extension
+ * @see CertAttrSet
+ */
+public class SubjectAlternativeNameExtension 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.SubjectAlternativeName";
+ /**
+ * Attribute names.
+ */
+ public static final String NAME = "SubjectAlternativeName";
+ public static final String SUBJECT_NAME = "subject_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 SubjectAlternativeNameExtension with the passed GeneralNames.
+ * The extension is marked non-critical.
+ *
+ * @param names the GeneralNames for the subject.
+ * @exception IOException on error.
+ */
+ public SubjectAlternativeNameExtension(GeneralNames names)
+ throws IOException {
+ this(Boolean.FALSE, names);
+ }
+
+ /**
+ * Create a SubjectAlternativeNameExtension with the specified
+ * criticality and GeneralNames.
+ *
+ * @param critical true if the extension is to be treated as critical.
+ * @param names the GeneralNames for the subject.
+ * @exception IOException on error.
+ */
+ public SubjectAlternativeNameExtension(Boolean critical, GeneralNames names)
+ throws IOException {
+ this.names = names;
+ this.extensionId = PKIXExtensions.SubjectAlternativeName_Id;
+ this.critical = critical.booleanValue();
+ encodeThis();
+ }
+
+ /**
+ * Create a default SubjectAlternativeNameExtension. The extension
+ * is marked non-critical.
+ */
+ public SubjectAlternativeNameExtension() {
+ extensionId = PKIXExtensions.SubjectAlternativeName_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 SubjectAlternativeNameExtension(Boolean critical, Object value)
+ throws IOException {
+ this.extensionId = PKIXExtensions.SubjectAlternativeName_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 SubjectAlternativeName.
+ */
+ public String toString() {
+
+ String result = super.toString() + "SubjectAlternativeName [\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 errors.
+ */
+ public void encode(OutputStream out) throws IOException {
+ DerOutputStream tmp = new DerOutputStream();
+ if (extensionValue == null) {
+ extensionId = PKIXExtensions.SubjectAlternativeName_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(SUBJECT_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:SubjectAlternativeName.");
+ }
+ encodeThis();
+ }
+
+ /**
+ * Get the attribute value.
+ */
+ public Object get(String name) throws IOException {
+ if (name.equalsIgnoreCase(SUBJECT_NAME)) {
+ return (names);
+ } else {
+ throw new IOException("Attribute name not recognized by " +
+ "CertAttrSet:SubjectAlternativeName.");
+ }
+ }
+
+ /**
+ * Delete the attribute value.
+ */
+ public void delete(String name) throws IOException {
+ if (name.equalsIgnoreCase(SUBJECT_NAME)) {
+ names = null;
+ } else {
+ throw new IOException("Attribute name not recognized by " +
+ "CertAttrSet:SubjectAlternativeName.");
+ }
+ encodeThis();
+ }
+
+ /**
+ * Return an enumeration of names of attributes existing within this
+ * attribute.
+ */
+ public Enumeration<String> getElements() {
+ AttributeNameEnumeration elements = new AttributeNameEnumeration();
+ elements.addElement(SUBJECT_NAME);
+
+ return (elements.elements());
+ }
+
+ /**
+ * Return the name of this attribute.
+ */
+ public String getName() {
+ return (NAME);
+ }
+}