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diff --git a/private/inc/netlogon.h b/private/inc/netlogon.h
new file mode 100644
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--- /dev/null
+++ b/private/inc/netlogon.h
@@ -0,0 +1,361 @@
+/*++
+
+Copyright (c) 1987-1991  Microsoft Corporation
+
+Module Name:
+
+    netlogon.h
+
+Abstract:
+
+    Definition of mailslot messages and Internal APIs to the Netlogon service.
+
+    This file is shared by the Netlogon service, the Workstation service,
+    the XACT server, and the MSV1_0 authentication package.
+
+Author:
+
+    Cliff Van Dyke (cliffv) 16-May-1991
+
+Environment:
+
+    User mode only.
+    Contains NT-specific code.
+    Requires ANSI C extensions: slash-slash comments, long external names.
+
+Revision History:
+
+    16-May-1991 (cliffv)
+        Ported from LanMan 2.1.
+
+    02-Jan-1992 (madana)
+        added support for builtin/multidomain replication.
+
+--*/
+
+#include <smbtypes.h>    // need by smbgtpt.h
+#include <smbgtpt.h>    // SmbPutUlong
+
+//
+// define version bit
+//
+// All netlogon messages that are compatible to NT VERSION 1 will
+// have the following bit set in the version field of the message
+// otherwise the message will not be processed by this version
+// of software. In addition to this the message should carry NT
+// token in it.
+//
+
+#define NETLOGON_NT_VERSION_1   0x00000001
+
+//
+// Name of the mailslot the Netlogon service listens to.
+//
+
+#define NETLOGON_LM_MAILSLOT_W      L"\\MAILSLOT\\NET\\NETLOGON"
+#define NETLOGON_LM_MAILSLOT_A      "\\MAILSLOT\\NET\\NETLOGON"
+#define NETLOGON_LM_MAILSLOT_LEN    22  // Length in characters (w/o NULL)
+
+#define NETLOGON_NT_MAILSLOT_W      L"\\MAILSLOT\\NET\\NTLOGON"
+#define NETLOGON_NT_MAILSLOT_A      "\\MAILSLOT\\NET\\NTLOGON"
+#define NETLOGON_NT_MAILSLOT_LEN    21 // Length in characters (w/o NULL)
+
+//
+// Opcodes for netlogon mailslot data
+//
+
+#define LOGON_REQUEST               0   // LM1.0/2.0 LOGON Request from client
+#define LOGON_RESPONSE              1   // LM1.0 Response to LOGON_REQUEST
+#define LOGON_CENTRAL_QUERY         2   // LM1.0 QUERY for centralized init
+#define LOGON_DISTRIB_QUERY         3   // LM1.0 QUERY for non-centralized init
+#define LOGON_CENTRAL_RESPONSE      4   // LM1.0 response to LOGON_CENTRAL_QUERY
+#define LOGON_DISTRIB_RESPONSE      5   // LM1.0 resp to LOGON_DISTRIB_QUERY
+#define LOGON_RESPONSE2             6   // LM2.0 Response to LOGON_REQUEST
+#define LOGON_PRIMARY_QUERY         7   // QUERY for Primary DC
+#define LOGON_START_PRIMARY         8   // announce startup of Primary DC
+#define LOGON_FAIL_PRIMARY          9   // announce failed  Primary DC
+#define LOGON_UAS_CHANGE            10  // announce change to UAS or SAM
+#define LOGON_NO_USER               11  // announce no user on machine
+#define LOGON_PRIMARY_RESPONSE      12  // response to LOGON_PRIMARY_QUERY
+#define LOGON_RELOGON_RESPONSE      13  // LM1.0/2.0 resp to relogn request
+#define LOGON_WKSTINFO_RESPONSE     14  // LM1.0/2.0 resp to interrogate request
+#define LOGON_PAUSE_RESPONSE        15  // LM2.0 resp when NETLOGON is paused
+#define LOGON_USER_UNKNOWN          16  // LM2.0 response when user is unknown
+#define LOGON_UPDATE_ACCOUNT        17  // LM2.1 announce account updates
+
+#define LOGON_SAM_LOGON_REQUEST     18  // SAM LOGON request from client
+#define LOGON_SAM_LOGON_RESPONSE    19  // SAM Response to SAM logon request
+#define LOGON_SAM_PAUSE_RESPONSE    20  // SAM response when NETLOGON is paused
+#define LOGON_SAM_USER_UNKNOWN      21  // SAM response when user is unknown
+
+#define LOGON_SAM_WKSTINFO_RESPONSE 22  // SAM response to interrogate request
+
+//
+// These structures are defined for their maximum case.  In many instances,
+// the strings are packed immediately following one another.  In that case
+// the comments below indicate that the offset of certain fields should
+// not be used.
+//
+
+//
+// NETLOGON_LOGON_QUERY:
+//
+// This structure is used for the following Opcodes:
+//      LOGON_PRIMARY_QUERY,    (all LanMan versions)
+//      LOGON_CENTRAL_QUERY,        (LM 1.0 only)
+//      LOGON_CENTRAL_RESPONSE,     (LM 1.0 only)
+//      LOGON_DISTRIB_QUERY,        (LM 1.0 only)
+//      LOGON_DISTRIB_RESPONSE.     (LM 1.0 only)
+//
+//
+
+typedef struct _NETLOGON_LOGON_QUERY {
+    USHORT Opcode;
+    CHAR ComputerName[LM20_CNLEN+1];        // This field is always ASCII.
+
+    CHAR MailslotName[LM20_PATHLEN];        // Do not use offset of this field
+
+                                            //
+                                            // This field is always ASCII.
+                                            //
+
+    CHAR Pad;                               // Possible pad to WCHAR boundary
+    WCHAR UnicodeComputerName[CNLEN+1];     // Do not use offset of this field
+
+                                            //
+                                            // This field is only present if
+                                            // this is a LOGON_PRIMARY_QUERY
+                                            // from an NT system.
+                                            //
+
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_LOGON_QUERY, * PNETLOGON_LOGON_QUERY;
+
+
+
+//
+// NETLOGON_LOGON_REQUEST
+//
+// This structure is used for the following Opcodes:
+//      LOGON_REQUEST    (LM 1.0 and LM 2.0 Only)
+//
+
+typedef struct _NETLOGON_LOGON_REQUEST {
+    USHORT Opcode;
+    CHAR ComputerName[LM20_CNLEN+1];
+    CHAR UserName[LM20_UNLEN+1];            // Do not use offset of this field
+
+    CHAR MailslotName[LM20_PATHLEN+1];      // Do not use offset of this field
+
+                                            //
+                                            // This field is always ASCII.
+                                            //
+
+    _USHORT (RequestCount);                 // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_LOGON_REQUEST, * PNETLOGON_LOGON_REQUEST;
+
+
+
+//
+// NETLOGON_LOGON_RESPONSE:
+//
+// This structure is used for the following Opcodes:
+//      LOGON_RESPONSE (To LM 1.0 clients only).
+//
+
+typedef struct _NETLOGON_LOGON_RESPONSE {
+    USHORT Opcode;
+    CHAR UseName[2 + LM20_CNLEN + 1 + LM20_NNLEN +1];
+    CHAR ScriptName[(2*LM20_PATHLEN) + LM20_UNLEN + LM20_CNLEN + LM20_NNLEN + 8];       // Do not use offset of this field
+} NETLOGON_LOGON_RESPONSE, *PNETLOGON_LOGON_RESPONSE;
+
+
+//
+// NETLOGON_PRIMARY
+//
+// This structure is used for the following Opcodes:
+//      LOGON_START_PRIMARY
+//      LOGON_PRIMARY_RESPONSE
+//
+
+typedef struct _NETLOGON_PRIMARY {
+    USHORT Opcode;
+    CHAR PrimaryDCName[LM20_CNLEN + 1];     // This field is always ASCII.
+
+    //
+    // The following fields are only present if this message is from
+    // an NT system.
+    //
+
+    CHAR Pad;                               // Possible pad to WCHAR boundary
+    WCHAR UnicodePrimaryDCName[CNLEN+1];    // Do not use offset of this field
+    WCHAR UnicodeDomainName[DNLEN+1];       // Do not use offset of this field
+
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_PRIMARY, * PNETLOGON_PRIMARY;
+
+
+//
+// NETLOGON_FAIL_PRIMARY
+//
+// This structure is used for the following Opcodes:
+//      LOGON_FAIL_PRIMARY       (All LanMan versions)
+//
+
+typedef struct _NETLOGON_FAIL_PRIMARY {
+    USHORT  Opcode;
+
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_FAIL_PRIMARY, *PNETLOGON_FAIL_PRIMARY;
+
+
+//
+// NETLOGON_LOGON_RESPONSE2
+//
+// This structure is used for the following Opcodes:
+//      LOGON_RESPONSE2         (LM 2.0 only)
+//      LOGON_USER_UNKNOWN      (LM 2.0 only)
+//      LOGON_PAUSE_RESPONSE    (LM 2.0 only)
+//
+
+typedef struct _NETLOGON_LOGON_RESPONSE2 {
+    USHORT Opcode;
+    CHAR LogonServer[LM20_UNCLEN+1];
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_LOGON_RESPONSE2, *PNETLOGON_LOGON_RESPONSE2;
+
+
+//
+// The following structures are densely packed to be compatible with LM2.0.
+//  Poorly aligned fields should only be accessed using the SmbPut and SmbGet
+//  family of macros.
+//
+
+//
+// Force misalignment of the following structures
+//
+
+#ifndef NO_PACKING
+#include <packon.h>
+#endif // ndef NO_PACKING
+
+//
+// NETLOGON_UAS_CHANGE
+//
+// This structure is used for the following Opcodes:
+//      LOGON_UAS_CHANGE
+//
+
+//
+// DB_CHANGE_INFO structure contains per database change info.
+//
+
+typedef struct _DB_CHANGE_INFO {
+    DWORD           DBIndex;
+    LARGE_INTEGER   LargeSerialNumber;
+    LARGE_INTEGER   NtDateAndTime;
+} DB_CHANGE_INFO, *PDB_CHANGE_INFO;
+
+
+//
+// NETLOGON_DB_STRUCTURE contains common change info for all databases and
+//  array of per database change info. First half of this structure is
+//  identical to downlevel NETLOGON_UAS_CHANGE message and contains SAM
+//  database change info.
+//
+
+typedef struct _NETLOGON_DB_CHANGE {
+    USHORT  Opcode;
+    _ULONG  (LowSerialNumber);
+    _ULONG  (DateAndTime);
+    _ULONG  (Pulse);
+    _ULONG  (Random);
+    CHAR    PrimaryDCName[LM20_CNLEN + 1];
+    CHAR    DomainName[LM20_DNLEN + 1];     // Do not use offset of this field
+
+    //
+    // The following fields are only present if this message is from
+    // an NT system.
+    //
+
+    CHAR Pad;                               // Possible pad to WCHAR boundary
+    WCHAR   UnicodePrimaryDCName[CNLEN+1];  // Do not use offset of this field
+    WCHAR   UnicodeDomainName[DNLEN+1];     // Do not use offset of this field
+    DWORD   DBCount;                        // Do not use offset of this field
+    DB_CHANGE_INFO DBChangeInfo[1];         // Do not use offset of this field
+    DWORD   DomainSidSize;                  // Do not use offset of this field
+    CHAR    DomainSid[1];                   // Do not use offset of this field
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_DB_CHANGE, *PNETLOGON_DB_CHANGE;
+
+
+
+//
+// Turn structure packing back off
+//
+
+#ifndef NO_PACKING
+#include <packoff.h>
+#endif // ndef NO_PACKING
+
+
+
+//
+// NETLOGON_SAM_LOGON_REQUEST
+//
+// This structure is used for the following Opcodes:
+//      LOGON_SAM_LOGON_REQUEST  (SAM Only)
+//
+// This message exceeds the maximum size for broadcast mailslot messages.  In
+// practice, this will only be a problem if the UnicodeUserName is over 100
+// characters long.
+//
+
+typedef struct _NETLOGON_SAM_LOGON_REQUEST {
+    USHORT Opcode;
+    USHORT RequestCount;
+
+    WCHAR UnicodeComputerName[CNLEN+1];
+    WCHAR UnicodeUserName[UNLEN+1];         // Do not use offset of this field
+
+    CHAR MailslotName[LM20_PATHLEN+1];      // Do not use offset of this field
+                                            // This field is always ASCII.
+    _ULONG (AllowableAccountControlBits);   // Do not use offset of this field
+    DWORD   DomainSidSize;                  // Do not use offset of this field
+    CHAR DomainSid[1];                      // Do not use offset of this field
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_SAM_LOGON_REQUEST, * PNETLOGON_SAM_LOGON_REQUEST;
+
+
+
+//
+// NETLOGON_SAM_LOGON_RESPONSE
+//
+// This structure is used for the following Opcodes:
+//      LOGON_SAM_LOGON_RESPONSE    (SAM only)
+//      LOGON_SAM_USER_UNKNOWN      (SAM only)
+//      LOGON_SAM_PAUSE_RESPONSE    (SAM only)
+//
+
+typedef struct _NETLOGON_SAM_LOGON_RESPONSE {
+    USHORT Opcode;
+    WCHAR UnicodeLogonServer[UNCLEN+1];
+    WCHAR UnicodeUserName[UNLEN+1];         // Do not use offset of this field
+    WCHAR UnicodeDomainName[DNLEN+1];		// Do not use offset of this field
+
+    _ULONG (NtVersion);                     // Do not use offset of this field
+    _USHORT (LmNtToken);                    // Do not use offset of this field
+    _USHORT (Lm20Token);                    // Do not use offset of this field
+} NETLOGON_SAM_LOGON_RESPONSE, *PNETLOGON_SAM_LOGON_RESPONSE;