private static unsafe SEC_WINNT_AUTH_IDENTITY_EX2 *MakeCreds(byte[] keytab, string usernameStr, string domainNameStr)
{
var usernameBytes = Encoding.Unicode.GetBytes(usernameStr);
var domainBytes = Encoding.Unicode.GetBytes(domainNameStr);
var size = sizeof(SEC_WINNT_AUTH_IDENTITY_EX2) +
sizeof(SEC_WINNT_AUTH_PACKED_CREDENTIALS) +
keytab.Length +
usernameBytes.Length +
domainBytes.Length;
void *pCreds = SafeAlloc(size);
SEC_WINNT_AUTH_IDENTITY_EX2 *creds = (SEC_WINNT_AUTH_IDENTITY_EX2 *)pCreds;
creds->Version = SEC_WINNT_AUTH_IDENTITY_VERSION_2;
creds->cbHeaderLength = (ushort)Marshal.SizeOf <SEC_WINNT_AUTH_IDENTITY_EX2>();
creds->cbStructureLength = (uint)size;
SEC_WINNT_AUTH_PACKED_CREDENTIALS *packedCreds = (SEC_WINNT_AUTH_PACKED_CREDENTIALS *)PtrIncrement(creds, creds->cbHeaderLength);
packedCreds->cbHeaderLength = (ushort)Marshal.SizeOf <SEC_WINNT_AUTH_PACKED_CREDENTIALS>();
packedCreds->cbStructureLength = (ushort)(packedCreds->cbHeaderLength + keytab.Length);
packedCreds->AuthData.CredType = SEC_WINNT_AUTH_DATA_TYPE_KEYTAB;
packedCreds->AuthData.CredData.ByteArrayLength = (ushort)keytab.Length;
packedCreds->AuthData.CredData.ByteArrayOffset = (ushort)Marshal.SizeOf <SEC_WINNT_AUTH_PACKED_CREDENTIALS>();
creds->PackedCredentialsOffset = (uint)Marshal.SizeOf <SEC_WINNT_AUTH_IDENTITY_EX2>();
creds->PackedCredentialsLength = packedCreds->cbStructureLength;
Marshal.Copy(
keytab,
0,
PtrIncrement(packedCreds, packedCreds->cbHeaderLength),
keytab.Length
);
creds->UserOffset = creds->PackedCredentialsOffset + creds->PackedCredentialsLength;
creds->UserLength = (ushort)usernameBytes.Length;
Marshal.Copy(
usernameBytes,
0,
PtrIncrement(creds, creds->UserOffset),
creds->UserLength
);
creds->DomainOffset = creds->UserOffset + creds->UserLength;
creds->DomainLength = (ushort)domainBytes.Length;
Marshal.Copy(
domainBytes,
0,
PtrIncrement(creds, creds->DomainOffset),
creds->DomainLength
);
return(creds);
}
public unsafe void DebugStructure()
{
#if DEBUG
if (!IsInvalid)
{
SEC_WINNT_AUTH_IDENTITY_EX2 *creds = (SEC_WINNT_AUTH_IDENTITY_EX2 *)handle;
DebugStructure((byte *)creds, creds->cbStructureLength);
}
#endif
}
