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/*
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* Copyright (c) 1997, 2004, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.x509;
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import java.io.IOException;
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import sun.security.util.*;
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/**
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* This class implements the ASN.1 GeneralName object class.
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* <p>
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* The ASN.1 syntax for this is:
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* <pre>
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* GeneralName ::= CHOICE {
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* otherName [0] OtherName,
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* rfc822Name [1] IA5String,
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* dNSName [2] IA5String,
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* x400Address [3] ORAddress,
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* directoryName [4] Name,
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* ediPartyName [5] EDIPartyName,
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* uniformResourceIdentifier [6] IA5String,
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* iPAddress [7] OCTET STRING,
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* registeredID [8] OBJECT IDENTIFIER
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* }
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* </pre>
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* @author Amit Kapoor
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* @author Hemma Prafullchandra
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*/
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public class GeneralName {
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// Private data members
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private GeneralNameInterface name = null;
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/**
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* Default constructor for the class.
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*
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* @param name the selected CHOICE from the list.
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* @throws NullPointerException if name is null
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*/
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public GeneralName(GeneralNameInterface name) {
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if (name == null) {
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throw new NullPointerException("GeneralName must not be null");
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}
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this.name = name;
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}
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/**
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* Create the object from its DER encoded value.
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*
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* @param encName the DER encoded GeneralName.
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*/
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public GeneralName(DerValue encName) throws IOException {
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this(encName, false);
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}
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/**
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* Create the object from its DER encoded value.
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*
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* @param encName the DER encoded GeneralName.
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* @param nameConstraint true if general name is a name constraint
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*/
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public GeneralName(DerValue encName, boolean nameConstraint)
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throws IOException {
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short tag = (byte)(encName.tag & 0x1f);
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// All names except for NAME_DIRECTORY should be encoded with the
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// IMPLICIT tag.
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switch (tag) {
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case GeneralNameInterface.NAME_ANY:
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if (encName.isContextSpecific() && encName.isConstructed()) {
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encName.resetTag(DerValue.tag_Sequence);
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name = new OtherName(encName);
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} else {
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throw new IOException("Invalid encoding of Other-Name");
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}
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break;
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case GeneralNameInterface.NAME_RFC822:
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if (encName.isContextSpecific() && !encName.isConstructed()) {
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encName.resetTag(DerValue.tag_IA5String);
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name = new RFC822Name(encName);
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} else {
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throw new IOException("Invalid encoding of RFC822 name");
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}
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break;
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case GeneralNameInterface.NAME_DNS:
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if (encName.isContextSpecific() && !encName.isConstructed()) {
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encName.resetTag(DerValue.tag_IA5String);
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name = new DNSName(encName);
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} else {
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throw new IOException("Invalid encoding of DNS name");
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}
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break;
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case GeneralNameInterface.NAME_URI:
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if (encName.isContextSpecific() && !encName.isConstructed()) {
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encName.resetTag(DerValue.tag_IA5String);
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name = (nameConstraint ? URIName.nameConstraint(encName) :
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new URIName(encName));
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} else {
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throw new IOException("Invalid encoding of URI");
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}
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break;
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case GeneralNameInterface.NAME_IP:
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if (encName.isContextSpecific() && !encName.isConstructed()) {
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encName.resetTag(DerValue.tag_OctetString);
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name = new IPAddressName(encName);
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} else {
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throw new IOException("Invalid encoding of IP address");
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}
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break;
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case GeneralNameInterface.NAME_OID:
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if (encName.isContextSpecific() && !encName.isConstructed()) {
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encName.resetTag(DerValue.tag_ObjectId);
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name = new OIDName(encName);
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} else {
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throw new IOException("Invalid encoding of OID name");
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}
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break;
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case GeneralNameInterface.NAME_DIRECTORY:
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if (encName.isContextSpecific() && encName.isConstructed()) {
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name = new X500Name(encName.getData());
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} else {
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throw new IOException("Invalid encoding of Directory name");
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}
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break;
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case GeneralNameInterface.NAME_EDI:
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if (encName.isContextSpecific() && encName.isConstructed()) {
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encName.resetTag(DerValue.tag_Sequence);
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name = new EDIPartyName(encName);
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} else {
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throw new IOException("Invalid encoding of EDI name");
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}
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break;
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default:
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throw new IOException("Unrecognized GeneralName tag, ("
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+ tag +")");
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}
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}
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/**
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* Return the type of the general name.
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*/
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public int getType() {
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return name.getType();
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}
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/**
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* Return the GeneralNameInterface name.
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*/
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public GeneralNameInterface getName() {
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//XXXX May want to consider cloning this
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return name;
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}
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/**
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* Return the name as user readable string
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*/
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public String toString() {
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return name.toString();
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}
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/**
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* Compare this GeneralName with another
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*
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* @param other GeneralName to compare to this
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* @returns true if match
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*/
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public boolean equals(Object other) {
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if (this == other) {
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return true;
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}
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if (!(other instanceof GeneralName))
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return false;
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GeneralNameInterface otherGNI = ((GeneralName)other).name;
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try {
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return name.constrains(otherGNI) == GeneralNameInterface.NAME_MATCH;
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} catch (UnsupportedOperationException ioe) {
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return false;
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}
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}
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/**
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* Returns the hash code for this GeneralName.
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*
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* @return a hash code value.
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*/
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public int hashCode() {
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return name.hashCode();
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}
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/**
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* Encode the name to the specified DerOutputStream.
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*
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* @param out the DerOutputStream to encode the the GeneralName to.
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* @exception IOException on encoding errors.
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*/
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public void encode(DerOutputStream out) throws IOException {
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DerOutputStream tmp = new DerOutputStream();
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name.encode(tmp);
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int nameType = name.getType();
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if (nameType == GeneralNameInterface.NAME_ANY ||
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nameType == GeneralNameInterface.NAME_X400 ||
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nameType == GeneralNameInterface.NAME_EDI) {
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// implicit, constructed form
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out.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte)nameType), tmp);
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} else if (nameType == GeneralNameInterface.NAME_DIRECTORY) {
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// explicit, constructed form since underlying tag is CHOICE
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// (see X.680 section 30.6, part c)
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out.write(DerValue.createTag(DerValue.TAG_CONTEXT,
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true, (byte)nameType), tmp);
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} else {
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// implicit, primitive form
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out.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT,
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false, (byte)nameType), tmp);
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}
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}
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}
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