/// <summary>
/// Deserializes a Type 2 message instance from the specified buffer
/// of bytes.
/// </summary>
/// <param name="buffer">The buffer containing a sequence of bytes
/// representing an NTLM Type 2 message.</param>
/// <returns>An initialized instance of the Type2 class.</returns>
/// <exception cref="SerializationException">Thrown if an error occurs
/// during deserialization of the Type 2 message.</exception>
static internal Type2Message Deserialize(byte[] buffer)
{
try {
Type2Message t2 = new Type2Message();
using (var ms = new MemoryStream(buffer)) {
using (var r = new BinaryReader(ms)) {
if (r.ReadASCIIString(8) != signature)
{
throw new InvalidDataException("Invalid signature.");
}
if (r.ReadInt32() != (int)type)
{
throw new InvalidDataException("Unexpected message type.");
}
int targetLength = r.ReadInt16(), targetSpace =
r.ReadInt16(), targetOffset = r.ReadInt32();
t2.Flags = (Flags)r.ReadInt32();
t2.Challenge = r.ReadBytes(8);
// Figure out, which of the several versions of Type 2 we're
// dealing with.
t2.Version = GetType2Version(targetOffset);
if (t2.Version > Type2Version.Version1)
{
t2.Context = r.ReadInt64();
// Read the target information security buffer
int informationLength = r.ReadInt16(), informationSpace =
r.ReadInt16(), informationOffset = r.ReadInt32();
t2.RawTargetInformation = new byte[informationLength];
Array.Copy(buffer, informationOffset,
t2.RawTargetInformation, 0, informationLength);
// Version 3 has an additional OS version structure.
if (t2.Version > Type2Version.Version2)
{
t2.OSVersion = ReadOSVersion(r);
}
}
t2.TargetName = GetTargetName(r.ReadBytes(targetLength),
(t2.Flags & Flags.NegotiateUnicode) == Flags.NegotiateUnicode);
if (t2.Version > Type2Version.Version1)
{
t2.TargetInformation = ReadTargetInformation(r);
}
}
}
return(t2);
} catch (Exception e) {
throw new SerializationException("NTLM Type 2 message could not be " +
"deserialized.", e);
}
}
/// <summary>
/// Deserializes a Type 2 message instance from the specified buffer
/// of bytes.
/// </summary>
/// <param name="buffer">The buffer containing a sequence of bytes
/// representing an NTLM Type 2 message.</param>
/// <returns>An initialized instance of the Type2 class.</returns>
/// <exception cref="SerializationException">Thrown if an error occurs
/// during deserialization of the Type 2 message.</exception>
static internal Type2Message Deserialize(byte[] buffer) {
try {
Type2Message t2 = new Type2Message();
using (var ms = new MemoryStream(buffer)) {
using (var r = new BinaryReader(ms)) {
if (r.ReadASCIIString(8) != signature)
throw new InvalidDataException("Invalid signature.");
if (r.ReadInt32() != (int) type)
throw new InvalidDataException("Unexpected message type.");
int targetLength = r.ReadInt16(), targetSpace =
r.ReadInt16(), targetOffset = r.ReadInt32();
t2.Flags = (Flags) r.ReadInt32();
t2.Challenge = r.ReadBytes(8);
// Figure out, which of the several versions of Type 2 we're
// dealing with.
t2.Version = GetType2Version(targetOffset);
if (t2.Version > Type2Version.Version1) {
t2.Context = r.ReadInt64();
// Read the target information security buffer
int informationLength = r.ReadInt16(), informationSpace =
r.ReadInt16(), informationOffset = r.ReadInt32();
t2.RawTargetInformation = new byte[informationLength];
Array.Copy(buffer, informationOffset,
t2.RawTargetInformation, 0, informationLength);
// Version 3 has an additional OS version structure.
if (t2.Version > Type2Version.Version2)
t2.OSVersion = ReadOSVersion(r);
}
t2.TargetName = GetTargetName(r.ReadBytes(targetLength),
(t2.Flags & Flags.NegotiateUnicode) == Flags.NegotiateUnicode);
if (t2.Version > Type2Version.Version1) {
t2.TargetInformation = ReadTargetInformation(r);
}
}
}
return t2;
} catch (Exception e) {
throw new SerializationException("NTLM Type 2 message could not be " +
"deserialized.", e);
}
}
