/// <summary>Creates a Type-2 message in response to the given Type-1 message.</summary>
/// <remarks>Creates a Type-2 message in response to the given Type-1 message.</remarks>
/// <param name="type1">The Type-1 message which this represents a response to.</param>
/// <param name="challenge">The challenge from the domain controller/server.</param>
/// <param name="target">The authentication target.</param>
public Type2Message(Type1Message type1,
byte[] challenge,
string target)
: this(GetDefaultFlags(type1),
challenge,
(type1 != null && target == null && type1.GetFlag(NtlmsspRequestTarget))
? GetDefaultDomain()
: target)
{
}
/// <summary>
/// Returns the default flags for a Type-2 message created in response
/// to the given Type-1 message in the current environment.
/// </summary>
/// <remarks>
/// Returns the default flags for a Type-2 message created in response
/// to the given Type-1 message in the current environment.
/// </remarks>
/// <returns>An <code>int</code> containing the default flags.</returns>
public static int GetDefaultFlags(Type1Message type1)
{
if (type1 == null)
{
return(DefaultFlags);
}
int flags = NtlmsspNegotiateNtlm;
int type1Flags = type1.GetFlags();
flags |= ((type1Flags & NtlmsspNegotiateUnicode) != 0) ? NtlmsspNegotiateUnicode
: NtlmsspNegotiateOem;
if ((type1Flags & NtlmsspRequestTarget) != 0)
{
string domain = GetDefaultDomain();
if (domain != null)
{
flags |= NtlmsspRequestTarget | NtlmsspTargetTypeDomain;
}
}
return(flags);
}
/// <exception cref="SharpCifs.Smb.SmbException"></exception>
public virtual byte[] InitSecContext(byte[] token, int offset, int len)
{
switch (State)
{
case 1:
{
Type1Message msg1 = new Type1Message(NtlmsspFlags, Auth.GetDomain(), Workstation);
token = msg1.ToByteArray();
if (Log.Level >= 4)
{
Log.WriteLine(msg1);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
State++;
break;
}
case 2:
{
try
{
Type2Message msg2 = new Type2Message(token);
if (Log.Level >= 4)
{
Log.WriteLine(msg2);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
ServerChallenge = msg2.GetChallenge();
NtlmsspFlags &= msg2.GetFlags();
// netbiosName = getNtlmsspListItem(token, 0x0001);
Type3Message msg3 = new Type3Message(msg2, Auth.GetPassword(), Auth.GetDomain(),
Auth.GetUsername(), Workstation, NtlmsspFlags);
token = msg3.ToByteArray();
if (Log.Level >= 4)
{
Log.WriteLine(msg3);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
if ((NtlmsspFlags & NtlmFlags.NtlmsspNegotiateSign) != 0)
{
SigningKey = msg3.GetMasterKey();
}
isEstablished = true;
State++;
break;
}
catch (Exception e)
{
throw new SmbException(e.Message, e);
}
}
default:
{
throw new SmbException("Invalid state");
}
}
return token;
}
/// <summary>
/// Creates a Type-2 message in response to the given Type-1 message
/// using default values from the current environment.
/// </summary>
/// <remarks>
/// Creates a Type-2 message in response to the given Type-1 message
/// using default values from the current environment.
/// </remarks>
/// <param name="type1">The Type-1 message which this represents a response to.</param>
public Type2Message(Type1Message type1) : this(type1, null, null)
{
}
/// <summary>
/// Returns the default flags for a Type-2 message created in response
/// to the given Type-1 message in the current environment.
/// </summary>
/// <remarks>
/// Returns the default flags for a Type-2 message created in response
/// to the given Type-1 message in the current environment.
/// </remarks>
/// <returns>An <code>int</code> containing the default flags.</returns>
public static int GetDefaultFlags(Type1Message type1)
{
if (type1 == null)
{
return DefaultFlags;
}
int flags = NtlmsspNegotiateNtlm;
int type1Flags = type1.GetFlags();
flags |= ((type1Flags & NtlmsspNegotiateUnicode) != 0) ? NtlmsspNegotiateUnicode
: NtlmsspNegotiateOem;
if ((type1Flags & NtlmsspRequestTarget) != 0)
{
string domain = GetDefaultDomain();
if (domain != null)
{
flags |= NtlmsspRequestTarget | NtlmsspTargetTypeDomain;
}
}
return flags;
}
/// <summary>Creates a Type-2 message in response to the given Type-1 message.</summary>
/// <remarks>Creates a Type-2 message in response to the given Type-1 message.</remarks>
/// <param name="type1">The Type-1 message which this represents a response to.</param>
/// <param name="challenge">The challenge from the domain controller/server.</param>
/// <param name="target">The authentication target.</param>
public Type2Message(Type1Message type1, byte[] challenge, string target) : this(GetDefaultFlags
(type1), challenge, (type1 != null && target == null && type1.GetFlag(NtlmsspRequestTarget
)) ? GetDefaultDomain() : target)
{
}
/// <summary>
/// Creates a Type-2 message in response to the given Type-1 message
/// using default values from the current environment.
/// </summary>
/// <remarks>
/// Creates a Type-2 message in response to the given Type-1 message
/// using default values from the current environment.
/// </remarks>
/// <param name="type1">The Type-1 message which this represents a response to.</param>
public Type2Message(Type1Message type1) : this(type1, null, null)
{
}
