com.hierynomus.spnego.NegTokenTarg Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of smbj Show documentation
Show all versions of smbj Show documentation
SMB2 protocol library for communication with Windows servers
/*
* Copyright (C)2016 - SMBJ Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hierynomus.spnego;
import com.hierynomus.asn1.ASN1InputStream;
import com.hierynomus.asn1.ASN1OutputStream;
import com.hierynomus.asn1.encodingrules.der.DERDecoder;
import com.hierynomus.asn1.encodingrules.der.DEREncoder;
import com.hierynomus.asn1.types.ASN1Object;
import com.hierynomus.asn1.types.ASN1Tag;
import com.hierynomus.asn1.types.constructed.ASN1Sequence;
import com.hierynomus.asn1.types.constructed.ASN1TaggedObject;
import com.hierynomus.asn1.types.primitive.ASN1Enumerated;
import com.hierynomus.asn1.types.primitive.ASN1ObjectIdentifier;
import com.hierynomus.asn1.types.string.ASN1OctetString;
import com.hierynomus.protocol.commons.buffer.Buffer;
import com.hierynomus.protocol.commons.buffer.Endian;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
/**
* This class can encode and decode the SPNEGO negTokenInit Token.
*
* The entire token is an ASN.1 DER encoded sequence of bytes in little endian byte encoding.
*
* The following if the ASN.1 specification of the full structure of the token:
*
*
* NegotiationToken ::= CHOICE {
* negTokenInit [0] NegTokenInit,
* negTokenTarg [1] NegTokenTarg
* }
*
* NegTokenTarg ::= SEQUENCE {
* negResult [0] ENUMERATED {
* accept_completed (0),
* accept_incomplete (1),
* rejected (2) } OPTIONAL,
* supportedMech [1] MechType OPTIONAL,
* responseToken [2] OCTET STRING OPTIONAL,
* mechListMIC [3] OCTET STRING OPTIONAL
* }
*
* MechType ::= OBJECT IDENTIFIER
*
*
* In the context of this class only the NegTokenTarg is covered.
*/
public class NegTokenTarg extends SpnegoToken {
private BigInteger negotiationResult;
private ASN1ObjectIdentifier supportedMech;
private byte[] responseToken;
private byte[] mechListMic;
public NegTokenTarg() {
super(0x01, "NegTokenTarg");
}
// Override writeGss for NTLMSSP_AUTH since Samba does not like putting the OID for SPNEGO
@Override
protected void writeGss(Buffer buffer, ASN1Object negToken) throws IOException {
ASN1TaggedObject negotiationToken = new ASN1TaggedObject(ASN1Tag.contextSpecific(0x01).constructed(), negToken, true);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try (ASN1OutputStream out = new ASN1OutputStream(new DEREncoder(), baos)) {
out.writeObject(negotiationToken);
}
buffer.putRawBytes(baos.toByteArray());
}
@SuppressWarnings("rawtypes")
public void write(Buffer buffer) throws SpnegoException {
List negTokenTarg = new ArrayList<>();
try {
if (negotiationResult != null) {
negTokenTarg.add(new ASN1TaggedObject(ASN1Tag.contextSpecific(0x0).constructed(), new ASN1Enumerated(negotiationResult)));
}
if (supportedMech != null) {
negTokenTarg.add(new ASN1TaggedObject(ASN1Tag.contextSpecific(0x01).constructed(), supportedMech));
}
if (responseToken != null && responseToken.length > 0) {
negTokenTarg.add(new ASN1TaggedObject(ASN1Tag.contextSpecific(0x02).constructed(), new ASN1OctetString(responseToken)));
}
if (mechListMic != null && mechListMic.length > 0) {
negTokenTarg.add(new ASN1TaggedObject(ASN1Tag.contextSpecific(0x03).constructed(), new ASN1OctetString(mechListMic)));
}
writeGss(buffer, new ASN1Sequence(negTokenTarg));
} catch (IOException e) {
throw new SpnegoException("Could not write NegTokenTarg to buffer", e);
}
}
public NegTokenTarg read(byte[] bytes) throws SpnegoException {
return read(new Buffer.PlainBuffer(bytes, Endian.LE));
}
private NegTokenTarg read(Buffer buffer) throws SpnegoException {
try (ASN1InputStream is = new ASN1InputStream(new DERDecoder(), buffer.asInputStream())) {
ASN1Object instance = is.readObject();
parseSpnegoToken(instance);
} catch (IOException e) {
throw new SpnegoException("Could not read NegTokenTarg from buffer", e);
}
return this;
}
@Override
protected void parseTagged(ASN1TaggedObject asn1TaggedObject) throws SpnegoException {
switch (asn1TaggedObject.getTagNo()) {
case 0:
readNegResult(asn1TaggedObject.getObject());
break;
case 1:
readSupportedMech(asn1TaggedObject.getObject());
break;
case 2:
readResponseToken(asn1TaggedObject.getObject());
break;
case 3:
readMechListMIC(asn1TaggedObject.getObject());
break;
default:
throw new SpnegoException("Unknown Object Tag " + asn1TaggedObject.getTagNo() + " encountered.");
}
}
private void readResponseToken(ASN1Object responseToken) throws SpnegoException {
if (!(responseToken instanceof ASN1OctetString)) {
throw new SpnegoException("Expected the responseToken (OCTET_STRING) contents, not: " + responseToken);
}
this.responseToken = ((ASN1OctetString) responseToken).getValue();
}
private void readMechListMIC(ASN1Object mic) throws SpnegoException {
if (!(mic instanceof ASN1OctetString)) {
throw new SpnegoException("Expected the responseToken (OCTET_STRING) contents, not: " + mic);
}
this.mechListMic = ((ASN1OctetString) mic).getValue();
}
private void readSupportedMech(ASN1Object supportedMech) throws SpnegoException {
if (!(supportedMech instanceof ASN1ObjectIdentifier)) {
throw new SpnegoException("Expected the supportedMech (OBJECT IDENTIFIER) contents, not: " + supportedMech);
}
this.supportedMech = (ASN1ObjectIdentifier) supportedMech;
}
private void readNegResult(ASN1Object object) throws SpnegoException {
if (!(object instanceof ASN1Enumerated)) {
throw new SpnegoException("Expected the negResult (ENUMERATED) contents, not: " + supportedMech);
}
this.negotiationResult = ((ASN1Enumerated) object).getValue();
}
public BigInteger getNegotiationResult() {
return negotiationResult;
}
public void setNegotiationResult(BigInteger negotiationResult) {
this.negotiationResult = negotiationResult;
}
public ASN1ObjectIdentifier getSupportedMech() {
return supportedMech;
}
public void setSupportedMech(ASN1ObjectIdentifier supportedMech) {
this.supportedMech = supportedMech;
}
public byte[] getResponseToken() {
return responseToken;
}
public void setResponseToken(byte[] responseToken) {
this.responseToken = responseToken;
}
public byte[] getMechListMic() {
return mechListMic;
}
public void setMechListMic(byte[] mechListMic) {
this.mechListMic = mechListMic;
}
}