/* jcifs smb client library in Java
* Copyright (C) 2002 "Michael B. Allen" <jcifs at samba dot org>
* "Eric Glass" <jcifs at samba dot org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package jcifs.ntlmssp;
import java.io.IOException;
import java.net.UnknownHostException;
import java.security.SecureRandom;
import jcifs.Config;
import jcifs.netbios.NbtAddress;
import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.util.HMACT64;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.security.GeneralSecurityException;
import jcifs.util.MD4;
import jcifs.util.RC4;
/**
* Represents an NTLMSSP Type-3 message.
*/
public class Type3Message extends NtlmMessage {
static final long MILLISECONDS_BETWEEN_1970_AND_1601 = 11644473600000L;
private static final int DEFAULT_FLAGS;
private static final String DEFAULT_DOMAIN;
private static final String DEFAULT_USER;
private static final String DEFAULT_PASSWORD;
private static final String DEFAULT_WORKSTATION;
private static final int LM_COMPATIBILITY;
private static final SecureRandom RANDOM = new SecureRandom();
private byte[] lmResponse;
private byte[] ntResponse;
private String domain;
private String user;
private String workstation;
private byte[] masterKey = null;
private byte[] sessionKey = null;
static {
DEFAULT_FLAGS = NTLMSSP_NEGOTIATE_NTLM |
(Config.getBoolean("jcifs.smb.client.useUnicode", true) ?
NTLMSSP_NEGOTIATE_UNICODE : NTLMSSP_NEGOTIATE_OEM);
DEFAULT_DOMAIN = Config.getProperty("jcifs.smb.client.domain", null);
DEFAULT_USER = Config.getProperty("jcifs.smb.client.username", null);
DEFAULT_PASSWORD = Config.getProperty("jcifs.smb.client.password",
null);
String defaultWorkstation = null;
try {
defaultWorkstation = NbtAddress.getLocalHost().getHostName();
} catch (UnknownHostException ex) { }
DEFAULT_WORKSTATION = defaultWorkstation;
LM_COMPATIBILITY = Config.getInt("jcifs.smb.lmCompatibility", 3);
}
/**
* Creates a Type-3 message using default values from the current
* environment.
*/
public Type3Message() {
setFlags(getDefaultFlags());
setDomain(getDefaultDomain());
setUser(getDefaultUser());
setWorkstation(getDefaultWorkstation());
}
/**
* Creates a Type-3 message in response to the given Type-2 message
* using default values from the current environment.
*
* @param type2 The Type-2 message which this represents a response to.
*/
public Type3Message(Type2Message type2) {
setFlags(getDefaultFlags(type2));
setWorkstation(getDefaultWorkstation());
String domain = getDefaultDomain();
setDomain(domain);
String user = getDefaultUser();
setUser(user);
String password = getDefaultPassword();
switch (LM_COMPATIBILITY) {
case 0:
case 1:
setLMResponse(getLMResponse(type2, password));
setNTResponse(getNTResponse(type2, password));
break;
case 2:
byte[] nt = getNTResponse(type2, password);
setLMResponse(nt);
setNTResponse(nt);
break;
case 3:
case 4:
case 5:
byte[] clientChallenge = new byte[8];
RANDOM.nextBytes(clientChallenge);
setLMResponse(getLMv2Response(type2, domain, user, password,
clientChallenge));
/*
setNTResponse(getNTLMv2Response(type2, domain, user, password,
clientChallenge));
*/
break;
default:
setLMResponse(getLMResponse(type2, password));
setNTResponse(getNTResponse(type2, password));
}
}
/**
* Creates a Type-3 message in response to the given Type-2 message.
*
* @param type2 The Type-2 message which this represents a response to.
* @param password The password to use when constructing the response.
* @param domain The domain in which the user has an account.
* @param user The username for the authenticating user.
* @param workstation The workstation from which authentication is
* taking place.
*/
public Type3Message(Type2Message type2, String password, String domain,
String user, String workstation, int flags) {
setFlags(flags | getDefaultFlags(type2));
if (workstation == null)
workstation = getDefaultWorkstation();
setWorkstation(workstation);
setDomain(domain);
setUser(user);
switch (LM_COMPATIBILITY) {
case 0:
case 1:
if ((getFlags() & NTLMSSP_NEGOTIATE_NTLM2) == 0) {
setLMResponse(getLMResponse(type2, password));
setNTResponse(getNTResponse(type2, password));
} else {
// NTLM2 Session Response
byte[] clientChallenge = new byte[24];
RANDOM.nextBytes(clientChallenge);
java.util.Arrays.fill(clientChallenge, 8, 24, (byte)0x00);
// NTLMv1 w/ NTLM2 session sec and key exch all been verified with a debug build of smbclient
byte[] responseKeyNT = NtlmPasswordAuthentication.nTOWFv1(password);
byte[] ntlm2Response = NtlmPasswordAuthentication.getNTLM2Response(responseKeyNT,
type2.getChallenge(),
clientChallenge);
setLMResponse(clientChallenge);
setNTResponse(ntlm2Response);
if ((getFlags() & NTLMSSP_NEGOTIATE_SIGN) == NTLMSSP_NEGOTIATE_SIGN) {
byte[] sessionNonce = new byte[16];
System.arraycopy(type2.getChallenge(), 0, sessionNonce, 0, 8);
System.arraycopy(clientChallenge, 0, sessionNonce, 8, 8);
MD4 md4 = new MD4();
md4.update(responseKeyNT);
byte[] userSessionKey = md4.digest();
HMACT64 hmac = new HMACT64(userSessionKey);
hmac.update(sessionNonce);
byte[] ntlm2SessionKey = hmac.digest();
if ((getFlags() & NTLMSSP_NEGOTIATE_KEY_EXCH) != 0) {
masterKey = new byte[16];
RANDOM.nextBytes(masterKey);
byte[] exchangedKey = new byte[16];
RC4 rc4 = new RC4(ntlm2SessionKey);
rc4.update(masterKey, 0, 16, exchangedKey, 0);
/* RC4 was not added to Java until 1.5u7 so let's use our own for a little while longer ...
try {
Cipher rc4 = Cipher.getInstance("RC4");
rc4.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(ntlm2SessionKey, "RC4"));
rc4.update(masterKey, 0, 16, exchangedKey, 0);
} catch (GeneralSecurityException gse) {
throw new RuntimeException("", gse);
}
*/
setSessionKey(exchangedKey);
} else {
masterKey = ntlm2SessionKey;
setSessionKey(masterKey);
}
}
}
break;
case 2:
byte[] nt = getNTResponse(type2, password);
setLMResponse(nt);
setNTResponse(nt);
break;
case 3:
case 4:
case 5:
byte[] responseKeyNT = NtlmPasswordAuthentication.nTOWFv2(domain, user, password);
byte[] clientChallenge = new byte[8];
RANDOM.nextBytes(clientChallenge);
setLMResponse(getLMv2Response(type2, domain, user, password, clientChallenge));
byte[] clientChallenge2 = new byte[8];
RANDOM.nextBytes(clientChallenge2);
setNTResponse(getNTLMv2Response(type2, responseKeyNT, clientChallenge2));
if ((getFlags() & NTLMSSP_NEGOTIATE_SIGN) == NTLMSSP_NEGOTIATE_SIGN) {
HMACT64 hmac = new HMACT64(responseKeyNT);
hmac.update(ntResponse, 0, 16); // only first 16 bytes of ntResponse
byte[] userSessionKey = hmac.digest();
if ((getFlags() & NTLMSSP_NEGOTIATE_KEY_EXCH) != 0) {
masterKey = new byte[16];
RANDOM.nextBytes(masterKey);
byte[] exchangedKey = new byte[16];
RC4 rc4 = new RC4(userSessionKey);
rc4.update(masterKey, 0, 16, exchangedKey, 0);
/* RC4 was not added to Java until 1.5u7 so let's use our own for a little while longer ...
try {
Cipher rc4 = Cipher.getInstance("RC4");
rc4.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(userSessionKey, "RC4"));
rc4.update(masterKey, 0, 16, exchangedKey, 0);
} catch (GeneralSecurityException gse) {
throw new RuntimeException("", gse);
}
*/
setSessionKey(exchangedKey);
} else {
masterKey = userSessionKey;
setSessionKey(masterKey);
}
}
break;
default:
setLMResponse(getLMResponse(type2, password));
setNTResponse(getNTResponse(type2, password));
}
}
/**
* Creates a Type-3 message with the specified parameters.
*
* @param flags The flags to apply to this message.
* @param lmResponse The LanManager/LMv2 response.
* @param ntResponse The NT/NTLMv2 response.
* @param domain The domain in which the user has an account.
* @param user The username for the authenticating user.
* @param workstation The workstation from which authentication is
* taking place.
*/
public Type3Message(int flags, byte[] lmResponse, byte[] ntResponse,
String domain, String user, String workstation) {
setFlags(flags);
setLMResponse(lmResponse);
setNTResponse(ntResponse);
setDomain(domain);
setUser(user);
setWorkstation(workstation);
}
/**
* Creates a Type-3 message using the given raw Type-3 material.
*
* @param material The raw Type-3 material used to construct this message.
* @throws IOException If an error occurs while parsing the material.
*/
public Type3Message(byte[] material) throws IOException {
parse(material);
}
/**
* Returns the LanManager/LMv2 response.
*
* @return A <code>byte[]</code> containing the LanManager response.
*/
public byte[] getLMResponse() {
return lmResponse;
}
/**
* Sets the LanManager/LMv2 response for this message.
*
* @param lmResponse The LanManager response.
*/
public void setLMResponse(byte[] lmResponse) {
this.lmResponse = lmResponse;
}
/**
* Returns the NT/NTLMv2 response.
*
* @return A <code>byte[]</code> containing the NT/NTLMv2 response.
*/
public byte[] getNTResponse() {
return ntResponse;
}
/**
* Sets the NT/NTLMv2 response for this message.
*
* @param ntResponse The NT/NTLMv2 response.
*/
public void setNTResponse(byte[] ntResponse) {
this.ntResponse = ntResponse;
}
/**
* Returns the domain in which the user has an account.
*
* @return A <code>String</code> containing the domain for the user.
*/
public String getDomain() {
return domain;
}
/**
* Sets the domain for this message.
*
* @param domain The domain.
*/
public void setDomain(String domain) {
this.domain = domain;
}
/**
* Returns the username for the authenticating user.
*
* @return A <code>String</code> containing the user for this message.
*/
public String getUser() {
return user;
}
/**
* Sets the user for this message.
*
* @param user The user.
*/
public void setUser(String user) {
this.user = user;
}
/**
* Returns the workstation from which authentication is being performed.
*
* @return A <code>String</code> containing the workstation.
*/
public String getWorkstation() {
return workstation;
}
/**
* Sets the workstation for this message.
*
* @param workstation The workstation.
*/
public void setWorkstation(String workstation) {
this.workstation = workstation;
}
/**
* The real session key if the regular session key is actually
* the encrypted version used for key exchange.
*
* @return A <code>byte[]</code> containing the session key.
*/
public byte[] getMasterKey() {
return masterKey;
}
/**
* Returns the session key.
*
* @return A <code>byte[]</code> containing the session key.
*/
public byte[] getSessionKey() {
return sessionKey;
}
/**
* Sets the session key.
*
* @param sessionKey The session key.
*/
public void setSessionKey(byte[] sessionKey) {
this.sessionKey = sessionKey;
}
public byte[] toByteArray() {
try {
int flags = getFlags();
boolean unicode = (flags & NTLMSSP_NEGOTIATE_UNICODE) != 0;
String oem = unicode ? null : getOEMEncoding();
String domainName = getDomain();
byte[] domain = null;
if (domainName != null && domainName.length() != 0) {
domain = unicode ?
domainName.getBytes(UNI_ENCODING) :
domainName.getBytes(oem);
}
int domainLength = (domain != null) ? domain.length : 0;
String userName = getUser();
byte[] user = null;
if (userName != null && userName.length() != 0) {
user = unicode ? userName.getBytes(UNI_ENCODING) :
userName.toUpperCase().getBytes(oem);
}
int userLength = (user != null) ? user.length : 0;
String workstationName = getWorkstation();
byte[] workstation = null;
if (workstationName != null && workstationName.length() != 0) {
workstation = unicode ?
workstationName.getBytes(UNI_ENCODING) :
workstationName.toUpperCase().getBytes(oem);
}
int workstationLength = (workstation != null) ?
workstation.length : 0;
byte[] lmResponse = getLMResponse();
int lmLength = (lmResponse != null) ? lmResponse.length : 0;
byte[] ntResponse = getNTResponse();
int ntLength = (ntResponse != null) ? ntResponse.length : 0;
byte[] sessionKey = getSessionKey();
int keyLength = (sessionKey != null) ? sessionKey.length : 0;
byte[] type3 = new byte[64 + domainLength + userLength +
workstationLength + lmLength + ntLength + keyLength];
System.arraycopy(NTLMSSP_SIGNATURE, 0, type3, 0, 8);
writeULong(type3, 8, 3);
int offset = 64;
writeSecurityBuffer(type3, 12, offset, lmResponse);
offset += lmLength;
writeSecurityBuffer(type3, 20, offset, ntResponse);
offset += ntLength;
writeSecurityBuffer(type3, 28, offset, domain);
offset += domainLength;
writeSecurityBuffer(type3, 36, offset, user);
offset += userLength;
writeSecurityBuffer(type3, 44, offset, workstation);
offset += workstationLength;
writeSecurityBuffer(type3, 52, offset, sessionKey);
writeULong(type3, 60, flags);
return type3;
} catch (IOException ex) {
throw new IllegalStateException(ex.getMessage());
}
}
public String toString() {
String user = getUser();
String domain = getDomain();
String workstation = getWorkstation();
byte[] lmResponse = getLMResponse();
byte[] ntResponse = getNTResponse();
byte[] sessionKey = getSessionKey();
return "Type3Message[domain=" + domain +
",user=" + user +
",workstation=" + workstation +
",lmResponse=" + (lmResponse == null ? "null" : "<" + lmResponse.length + " bytes>") +
",ntResponse=" + (ntResponse == null ? "null" : "<" + ntResponse.length + " bytes>") +
",sessionKey=" + (sessionKey == null ? "null" : "<" + sessionKey.length + " bytes>") +
",flags=0x" + jcifs.util.Hexdump.toHexString(getFlags(), 8) + "]";
}
/**
* Returns the default flags for a generic Type-3 message in the
* current environment.
*
* @return An <code>int</code> containing the default flags.
*/
public static int getDefaultFlags() {
return DEFAULT_FLAGS;
}
/**
* Returns the default flags for a Type-3 message created in response
* to the given Type-2 message in the current environment.
*
* @return An <code>int</code> containing the default flags.
*/
public static int getDefaultFlags(Type2Message type2) {
if (type2 == null) return DEFAULT_FLAGS;
int flags = NTLMSSP_NEGOTIATE_NTLM;
flags |= ((type2.getFlags() & NTLMSSP_NEGOTIATE_UNICODE) != 0) ?
NTLMSSP_NEGOTIATE_UNICODE : NTLMSSP_NEGOTIATE_OEM;
return flags;
}
/**
* Constructs the LanManager response to the given Type-2 message using
* the supplied password.
*
* @param type2 The Type-2 message.
* @param password The password.
* @return A <code>byte[]</code> containing the LanManager response.
*/
public static byte[] getLMResponse(Type2Message type2, String password) {
if (type2 == null || password == null) return null;
return NtlmPasswordAuthentication.getPreNTLMResponse(password,
type2.getChallenge());
}
public static byte[] getLMv2Response(Type2Message type2,
String domain, String user, String password,
byte[] clientChallenge) {
if (type2 == null || domain == null || user == null ||
password == null || clientChallenge == null) {
return null;
}
return NtlmPasswordAuthentication.getLMv2Response(domain, user,
password, type2.getChallenge(), clientChallenge);
}
public static byte[] getNTLMv2Response(Type2Message type2,
byte[] responseKeyNT,
byte[] clientChallenge) {
if (type2 == null || responseKeyNT == null || clientChallenge == null) {
return null;
}
long nanos1601 = (System.currentTimeMillis() + MILLISECONDS_BETWEEN_1970_AND_1601) * 10000L;
return NtlmPasswordAuthentication.getNTLMv2Response(responseKeyNT,
type2.getChallenge(),
clientChallenge,
nanos1601,
type2.getTargetInformation());
}
/**
* Constructs the NT response to the given Type-2 message using
* the supplied password.
*
* @param type2 The Type-2 message.
* @param password The password.
* @return A <code>byte[]</code> containing the NT response.
*/
public static byte[] getNTResponse(Type2Message type2, String password) {
if (type2 == null || password == null) return null;
return NtlmPasswordAuthentication.getNTLMResponse(password,
type2.getChallenge());
}
/**
* Returns the default domain from the current environment.
*
* @return The default domain.
*/
public static String getDefaultDomain() {
return DEFAULT_DOMAIN;
}
/**
* Returns the default user from the current environment.
*
* @return The default user.
*/
public static String getDefaultUser() {
return DEFAULT_USER;
}
/**
* Returns the default password from the current environment.
*
* @return The default password.
*/
public static String getDefaultPassword() {
return DEFAULT_PASSWORD;
}
/**
* Returns the default workstation from the current environment.
*
* @return The default workstation.
*/
public static String getDefaultWorkstation() {
return DEFAULT_WORKSTATION;
}
private void parse(byte[] material) throws IOException {
for (int i = 0; i < 8; i++) {
if (material[i] != NTLMSSP_SIGNATURE[i]) {
throw new IOException("Not an NTLMSSP message.");
}
}
if (readULong(material, 8) != 3) {
throw new IOException("Not a Type 3 message.");
}
byte[] lmResponse = readSecurityBuffer(material, 12);
int lmResponseOffset = readULong(material, 16);
byte[] ntResponse = readSecurityBuffer(material, 20);
int ntResponseOffset = readULong(material, 24);
byte[] domain = readSecurityBuffer(material, 28);
int domainOffset = readULong(material, 32);
byte[] user = readSecurityBuffer(material, 36);
int userOffset = readULong(material, 40);
byte[] workstation = readSecurityBuffer(material, 44);
int workstationOffset = readULong(material, 48);
int flags;
String charset;
byte[] _sessionKey = null;
if (lmResponseOffset == 52 || ntResponseOffset == 52 ||
domainOffset == 52 || userOffset == 52 ||
workstationOffset == 52) {
flags = NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_OEM;
charset = getOEMEncoding();
} else {
_sessionKey = readSecurityBuffer(material, 52);
flags = readULong(material, 60);
charset = ((flags & NTLMSSP_NEGOTIATE_UNICODE) != 0) ?
UNI_ENCODING : getOEMEncoding();
}
setSessionKey(_sessionKey);
setFlags(flags);
setLMResponse(lmResponse);
setNTResponse(ntResponse);
setDomain(new String(domain, charset));
setUser(new String(user, charset));
setWorkstation(new String(workstation, charset));
}
}
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