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/*
* 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 sun.security.util.*;
/**
* This class implements the OIDName as required by the GeneralNames
* ASN.1 object.
*
* @author Amit Kapoor
* @author Hemma Prafullchandra
* @see GeneralName
* @see GeneralNames
* @see GeneralNameInterface
*/
public class OIDName implements GeneralNameInterface {
private ObjectIdentifier oid;
/**
* Create the OIDName object from the passed encoded Der value.
*
* @param derValue the encoded DER OIDName.
* @exception IOException on error.
*/
public OIDName(DerValue derValue) throws IOException {
oid = derValue.getOID();
}
/**
* Create the OIDName object with the specified name.
*
* @param name the OIDName.
*/
public OIDName(ObjectIdentifier oid) {
this.oid = oid;
}
/**
* Create the OIDName from the String form of the OID
*
* @param name the OIDName in form "x.y.z..."
* @throws IOException on error
*/
public OIDName(String name) throws IOException {
try {
oid = new ObjectIdentifier(name);
} catch (Exception e) {
throw new IOException("Unable to create OIDName: " + e);
}
}
/**
* Return the type of the GeneralName.
*/
public int getType() {
return (GeneralNameInterface.NAME_OID);
}
/**
* Encode the OID name into the DerOutputStream.
*
* @param out the DER stream to encode the OIDName to.
* @exception IOException on encoding errors.
*/
public void encode(DerOutputStream out) throws IOException {
out.putOID(oid);
}
/**
* Convert the name into user readable string.
*/
public String toString() {
return ("OIDName: " + oid.toString());
}
/**
* Returns this OID name.
*/
public ObjectIdentifier getOID() {
return oid;
}
/**
* Compares this name with another, for equality.
*
* @return true iff the names are identical
*/
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!(obj instanceof OIDName))
return false;
OIDName other = (OIDName)obj;
return oid.equals((Object)other.oid);
}
/**
* Returns the hash code value for this object.
*
* @return a hash code value for this object.
*/
public int hashCode() {
return oid.hashCode();
}
/**
* Return type of constraint inputName places on this name:<ul>
* <li>NAME_DIFF_TYPE = -1: input name is different type from name (i.e. does not constrain).
* <li>NAME_MATCH = 0: input name matches name.
* <li>NAME_NARROWS = 1: input name narrows name (is lower in the naming subtree)
* <li>NAME_WIDENS = 2: input name widens name (is higher in the naming subtree)
* <li>NAME_SAME_TYPE = 3: input name does not match or narrow name, but is same type.
* </ul>. These results are used in checking NameConstraints during
* certification path verification.
*
* @param inputName to be checked for being constrained
* @returns constraint type above
* @throws UnsupportedOperationException if name is not exact match, but narrowing and widening are
* not supported for this name type.
*/
public int constrains(GeneralNameInterface inputName) throws UnsupportedOperationException {
int constraintType;
if (inputName == null)
constraintType = NAME_DIFF_TYPE;
else if (inputName.getType() != NAME_OID)
constraintType = NAME_DIFF_TYPE;
else if (this.equals((OIDName)inputName))
constraintType = NAME_MATCH;
else
//widens and narrows not defined in RFC2459 for OIDName (aka registeredID)
throw new UnsupportedOperationException("Narrowing and widening are not supported for OIDNames");
return constraintType;
}
/**
* Return subtree depth of this name for purposes of determining
* NameConstraints minimum and maximum bounds and for calculating
* path lengths in name subtrees.
*
* @returns distance of name from root
* @throws UnsupportedOperationException if not supported for this name type
*/
public int subtreeDepth() throws UnsupportedOperationException {
throw new UnsupportedOperationException("subtreeDepth() not supported for OIDName.");
}
}
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