/*
* Copyright (C) 2012 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.ietf.jgss;
import java.util.Arrays;
import java.io.*;
import edu.mit.jgss.OidUtil;
import edu.mit.jgss.GSSExceptionImpl;
import edu.mit.jgss.swig.*;
public class Oid {
protected gss_OID_desc oid = null;
protected byte[] derOid;
/**
* Creates a new Oid object from a string representation of the Oid's
* integer components (e.g., "1.2.840.113554.1.2.2").
*
* @param strOid the string representation of the Oid, separated by dots.
*/
public Oid(String strOid) throws GSSException {
boolean matches = OidUtil.verifyOid(strOid);
if (matches) {
this.oid = new gss_OID_desc(strOid);
} else {
System.out.println("failed to verify OID string");
freeStructs();
throw new GSSException(GSSException.FAILURE);
}
}
/**
* Creates a new Oid object from its DER encoding. The DER encoding
* refers to the full encoding, including the tag and length.
* Structure and encoding of Oids is defined in ISOIEC-8824 and
* ISOIEC-8825.
*
* @param derOid the stream containing the DER-encoded Oid.
*/
public Oid(InputStream derOid) throws GSSException {
if (derOid == null) {
freeStructs();
throw new NullPointerException();
}
try {
byte[] tmpOid = OidUtil.OidStream2DER(derOid);
boolean valid = OidUtil.verifyOid(tmpOid);
if (!valid) {
freeStructs();
throw new GSSException(GSSException.FAILURE);
}
/* Remove tag and length from byte array */
byte[] shortDerOid = new byte[tmpOid.length - 2];
for (int i = 0; i < tmpOid.length-2; i++) {
shortDerOid[i] = tmpOid[i+2];
}
this.oid = new gss_OID_desc(shortDerOid);
/* store der-encoded Oid in object for future use */
this.derOid = new byte[tmpOid.length];
System.arraycopy(tmpOid, 0, this.derOid, 0, tmpOid.length);
} catch (IOException e) {
freeStructs();
throw new GSSException(GSSException.FAILURE);
}
}
/**
* Creates a new Oid object from its DER encoding. The DER encoding
* refers to the full encoding, including the tag and length.
* Structure and encoding of Oids is defined in ISOIEC-8824 and
* ISOIEC_8825.
*
* @param derOid the byte array containing the DER-encoded Oid.
*/
public Oid(byte[] derOid) throws GSSException {
if (derOid == null) {
freeStructs();
throw new NullPointerException();
}
boolean valid = OidUtil.verifyOid(derOid);
if (!valid) {
freeStructs();
throw new GSSException(GSSException.FAILURE);
}
/* Remove tag and length from byte array */
byte[] shortDerOid = new byte[derOid.length - 2];
for (int i = 0; i < derOid.length-2; i++) {
shortDerOid[i] = derOid[i+2];
}
this.oid = new gss_OID_desc(shortDerOid);
/* store der-encoded Oid in object for future use */
this.derOid = new byte[derOid.length];
System.arraycopy(derOid, 0, this.derOid, 0, derOid.length);
}
/**
* Returns a string representation of the Oid's integer components in
* the dot separated notation.
*
* @return string representation of the Oid's integer components in dot
* notation.
*/
public String toString() {
if (oid != null) {
//return (this.oid).toString();
/* Get native OID string, { X X ... X } representation */
String tmpString = (this.oid).toString();
String[] stringArray = tmpString.split(" ");
/* Convert to dot-separated representation */
StringBuilder oidString = new StringBuilder();
for (int i = 0; i < stringArray.length; i++) {
if (stringArray[i].matches("\\d*")) {
oidString.append(stringArray[i]);
if ((stringArray.length - i) > 2) {
oidString.append(".");
}
}
}
return oidString.toString();
} else {
return null;
}
}
/**
* Compares two Oid objects, returning "true" if the two represent
* the same Oid value. Two Oid objects are equal when the
* integer result from hashCode() method called on them is the same.
*
* @param obj the Oid object with which to compare.
* @return "true" if the two objects are equal, "false" otherwise.
*/
public boolean equals(Object obj) {
if (! (obj instanceof Oid))
return false;
Oid tmp = (Oid) obj;
if (tmp == null) {
throw new NullPointerException("Input Obj is null");
}
if (Arrays.equals(this.getDER(), tmp.getDER()))
return true;
else
return false;
}
/**
* Returns the full ASN.1 DER encoding for the Oid object. This encoding
* includes the tag and length.
*
* @return full ASN.1 DER encoding for the Oid object.
*/
public byte[] getDER() {
if (derOid == null) {
byte[] tmpDerOid = OidUtil.OidString2DER(this.toString());
return tmpDerOid;
//System.arraycopy(tmpDerOid, 0, this.derOid, 0, tmpDerOid.length);
//this.derOid = OidUtil.OidString2DER(this.toString());
}
return this.derOid;
}
/**
* Tests if an Oid object is contained in the given Oid object array.
*
* @param oids the array of Oid objects to test against.
* @return "true" if the Oid object is contained in the array,
* "false" otherwise.
*/
public boolean containedIn(Oid[] oids) {
if (oids == null)
throw new NullPointerException("Input Oid[] is null");
for (int i = 0; i < oids.length; i++)
{
if (oid.equals(oids[i].oid))
return true;
}
return false;
}
/**
* package-scope method used in GSSName.java to create a new Oid
* object.
*
* @param strOid Oid in dot-separated String representation
* @return new Oid object matching input string
*/
static Oid getNewOid(String strOid) {
Oid retOid = null;
try {
retOid = new Oid(strOid);
} catch (GSSException e) {
e.printStackTrace();
}
return retOid;
}
private void freeStructs() throws GSSException {
if (oid != null) {
long maj_status = 0;
long[] min_status = {0};
maj_status = gsswrapper.gss_release_oid(min_status, oid);
if (maj_status != gsswrapper.GSS_S_COMPLETE) {
throw new GSSExceptionImpl((int)maj_status, (int)min_status[0]);
}
}
}
public gss_OID_desc getNativeOid() {
return this.oid;
}
public void setNativeOid(gss_OID_desc newOid) {
if (newOid != null) {
this.oid = newOid;
this.derOid = null;
}
}
}