270 lines
8.5 KiB
Java
270 lines
8.5 KiB
Java
/*
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* Copyright (c) 1998, 2011, 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 java.lang.reflect.Constructor;
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import java.util.Arrays;
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import sun.security.util.*;
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/**
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* This class represents the OtherName as required by the GeneralNames
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* ASN.1 object. It supplies the generic framework to allow specific
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* Other Name types, and also provides minimal support for unrecognized
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* Other Name types.
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*
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* The ASN.1 definition for OtherName is:
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* <pre>
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* OtherName ::= SEQUENCE {
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* type-id OBJECT IDENTIFIER,
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* value [0] EXPLICIT ANY DEFINED BY type-id
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* }
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* </pre>
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* @author Hemma Prafullchandra
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*/
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public class OtherName implements GeneralNameInterface {
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private String name;
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private ObjectIdentifier oid;
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private byte[] nameValue = null;
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private GeneralNameInterface gni = null;
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private static final byte TAG_VALUE = 0;
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private int myhash = -1;
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/**
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* Create the OtherName object from a passed ObjectIdentfier and
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* byte array name value
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*
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* @param oid ObjectIdentifier of this OtherName object
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* @param value the DER-encoded value of the OtherName
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* @throws IOException on error
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*/
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public OtherName(ObjectIdentifier oid, byte[] value) throws IOException {
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if (oid == null || value == null) {
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throw new NullPointerException("parameters may not be null");
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}
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this.oid = oid;
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this.nameValue = value;
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gni = getGNI(oid, value);
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if (gni != null) {
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name = gni.toString();
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} else {
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name = "Unrecognized ObjectIdentifier: " + oid.toString();
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}
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}
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/**
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* Create the OtherName object from the passed encoded Der value.
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*
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* @param derValue the encoded DER OtherName.
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* @exception IOException on error.
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*/
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public OtherName(DerValue derValue) throws IOException {
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DerInputStream in = derValue.toDerInputStream();
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oid = in.getOID();
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DerValue val = in.getDerValue();
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nameValue = val.toByteArray();
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gni = getGNI(oid, nameValue);
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if (gni != null) {
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name = gni.toString();
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} else {
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name = "Unrecognized ObjectIdentifier: " + oid.toString();
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}
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}
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/**
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* Get ObjectIdentifier
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*/
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public ObjectIdentifier getOID() {
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//XXXX May want to consider cloning this
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return oid;
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}
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/**
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* Get name value
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*/
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public byte[] getNameValue() {
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return nameValue.clone();
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}
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/**
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* Get GeneralNameInterface
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*/
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private GeneralNameInterface getGNI(ObjectIdentifier oid, byte[] nameValue)
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throws IOException {
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try {
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Class<?> extClass = OIDMap.getClass(oid);
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if (extClass == null) { // Unsupported OtherName
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return null;
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}
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Class<?>[] params = { Object.class };
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Constructor<?> cons = extClass.getConstructor(params);
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Object[] passed = new Object[] { nameValue };
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GeneralNameInterface gni =
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(GeneralNameInterface)cons.newInstance(passed);
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return gni;
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} catch (Exception e) {
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throw new IOException("Instantiation error: " + e, e);
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}
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}
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/**
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* Return the type of the GeneralName.
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*/
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public int getType() {
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return GeneralNameInterface.NAME_ANY;
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}
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/**
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* Encode the Other name into the DerOutputStream.
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*
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* @param out the DER stream to encode the Other-Name 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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if (gni != null) {
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// This OtherName has a supported class
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gni.encode(out);
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return;
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} else {
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// This OtherName has no supporting class
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DerOutputStream tmp = new DerOutputStream();
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tmp.putOID(oid);
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tmp.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, TAG_VALUE), nameValue);
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out.write(DerValue.tag_Sequence, tmp);
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}
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}
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/**
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* Compares this name with another, for equality.
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*
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* @return true iff the names are identical.
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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 OtherName)) {
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return false;
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}
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OtherName otherOther = (OtherName)other;
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if (!(otherOther.oid.equals((Object)oid))) {
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return false;
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}
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GeneralNameInterface otherGNI = null;
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try {
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otherGNI = getGNI(otherOther.oid, otherOther.nameValue);
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} catch (IOException ioe) {
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return false;
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}
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boolean result;
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if (otherGNI != null) {
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try {
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result = (otherGNI.constrains(this) == NAME_MATCH);
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} catch (UnsupportedOperationException ioe) {
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result = false;
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}
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} else {
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result = Arrays.equals(nameValue, otherOther.nameValue);
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}
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return result;
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}
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/**
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* Returns the hash code for this OtherName.
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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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if (myhash == -1) {
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myhash = 37 + oid.hashCode();
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for (int i = 0; i < nameValue.length; i++) {
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myhash = 37 * myhash + nameValue[i];
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}
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}
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return myhash;
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}
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/**
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* Convert the name into user readable string.
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*/
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public String toString() {
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return "Other-Name: " + name;
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}
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/**
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* Return type of constraint inputName places on this name:<ul>
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* <li>NAME_DIFF_TYPE = -1: input name is different type from name
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* (i.e. does not constrain).
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* <li>NAME_MATCH = 0: input name matches name.
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* <li>NAME_NARROWS = 1: input name narrows name (is lower in the
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* naming subtree)
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* <li>NAME_WIDENS = 2: input name widens name (is higher in the
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* naming subtree)
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* <li>NAME_SAME_TYPE = 3: input name does not match or narrow name,
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* but is same type.
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* </ul>. These results are used in checking NameConstraints during
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* certification path verification.
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*
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* @param inputName to be checked for being constrained
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* @returns constraint type above
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* @throws UnsupportedOperationException if name is same type, but
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* comparison operations are not supported for this name type.
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*/
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public int constrains(GeneralNameInterface inputName) {
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int constraintType;
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if (inputName == null) {
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constraintType = NAME_DIFF_TYPE;
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} else if (inputName.getType() != NAME_ANY) {
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constraintType = NAME_DIFF_TYPE;
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} else {
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throw new UnsupportedOperationException("Narrowing, widening, "
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+ "and matching are not supported for OtherName.");
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}
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return constraintType;
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}
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/**
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* Return subtree depth of this name for purposes of determining
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* NameConstraints minimum and maximum bounds.
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*
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* @returns distance of name from root
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* @throws UnsupportedOperationException if not supported for this name type
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*/
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public int subtreeDepth() {
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throw new UnsupportedOperationException
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("subtreeDepth() not supported for generic OtherName");
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}
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}
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