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// ReadAcpi.cpp : Read MSDM license information from BIOS ACPI tables. // //#include "stdafx.h" #include "Windows.h" #include <tchar.h> #include "stdio.h" int _tmain(int argc, _TCHAR* argv[]) { DWORD FirmwareTableProviderSignature; PVOID pFirmwareTableBuffer; DWORD BufferSize; UINT BytesWritten; DWORD FirmwareTableID; DWORD *pFirmwareTableID; BOOL foundTable = FALSE; BOOL verbose = FALSE; if (argc > 1) { if (wcscmp(argv[1], _T("-v")) == 0) verbose = TRUE; } FirmwareTableProviderSignature = 'ACPI'; pFirmwareTableBuffer = NULL; BufferSize = NULL; // get buffer size, call with null values BufferSize = EnumSystemFirmwareTables(FirmwareTableProviderSignature, NULL, NULL); // alloc memory pFirmwareTableBuffer = malloc(BufferSize); // enum acpi tables BytesWritten = EnumSystemFirmwareTables(FirmwareTableProviderSignature, pFirmwareTableBuffer, BufferSize); // enumerate ACPI tables, look for MSDM table pFirmwareTableID = (DWORD*)pFirmwareTableBuffer; for (int i = 0; i < BytesWritten / 4; i++) { FirmwareTableID = *pFirmwareTableID; if (verbose) printf("%.*sn", 4, pFirmwareTableID); if (FirmwareTableID == _byteswap_ulong('MSDM')) { if (verbose) printf("Found MSDM tablen"); foundTable = TRUE; break; } pFirmwareTableID++; } if (foundTable) { // get buffer size, call with null values BufferSize = GetSystemFirmwareTable(FirmwareTableProviderSignature, FirmwareTableID, NULL, NULL); // alloc memory pFirmwareTableBuffer = malloc(BufferSize); BytesWritten = GetSystemFirmwareTable(FirmwareTableProviderSignature, FirmwareTableID, pFirmwareTableBuffer, BufferSize); /* Table description form Miocrosoft at: http://go.microsoft.com/fwlink/p/?LinkId=234834 Microsoft Software Licensing Tables (SLIC and MSDM) http://msdn.microsoft.com/library/windows/hardware/hh673514 Byte Byte Field Lenght Offset Description ====== ===== ====== =========== Signature 4 0 MSDM Length 4 4 Length, in bytes, of the entire table. Revision 1 8 0x01 Checksum 1 9 Checksum of the entire table. OEMID 6 10 An OEM-supplied string that identifies the OEM. OEM Table ID 8 16 Optional motherboard/BIOS logical identifier. OEM Revision 4 24 OEM revision number of the table for the supplied OEM Table ID. Creator ID 4 28 Vendor ID of the utility that created the table. Creator Revision 4 32 Revision of the utility that created the table. Software Licensing Structure Variable length 36 Proprietary data structure that contains all the licensing data necessary to enable Windows activation. Details can be found in the appropriate Microsoft OEM licensing kit by first visiting the Microsoft OEM website (http://www.microsoft.com/oem/pages/index.aspx). */ BYTE * Signature = (BYTE*)memset(malloc(4 + 1), NULL, 4 + 1); UINT Length; BYTE Revision; BYTE Checksum; BYTE *OEMID = (BYTE*)memset(malloc(6 + 1), NULL, 6 + 1); BYTE *OEMTbleID = (BYTE*)memset(malloc(8 + 1), NULL, 8 + 1); BYTE OEMRev; BYTE *CreatorID = (BYTE*)memset(malloc(4 + 1), NULL, 4 + 1); UINT CreatorRev; UINT SLS_Size = BytesWritten - 36; BYTE *SLS = (BYTE*)memset(malloc(SLS_Size), NULL, SLS_Size); UINT SLS_Version; UINT SLS_Reserved; UINT SLS_DataType; UINT SLS_DataReserved; UINT SLS_DataLenght; BYTE *ProductKey = (BYTE*)memset(malloc(30 + 1), NULL, 30 + 1); memcpy_s(Signature, 4 + 1, (BYTE*)pFirmwareTableBuffer + 0, 4); Length = *(DWORD*)((BYTE*)pFirmwareTableBuffer + 4); Revision = *((BYTE*)pFirmwareTableBuffer + 8); Checksum = *((BYTE*)pFirmwareTableBuffer + 9); memcpy_s(OEMID, 6 + 1, (BYTE*)pFirmwareTableBuffer + 10, 6); memcpy_s(OEMTbleID, 8 + 1, (BYTE*)pFirmwareTableBuffer + 16, 8); OEMRev = *(DWORD*)((BYTE*)pFirmwareTableBuffer + 24); memcpy_s(CreatorID, 4 + 1, (BYTE*)pFirmwareTableBuffer + 28, 4); CreatorRev = *(DWORD*)((BYTE*)pFirmwareTableBuffer + 32); memcpy_s(SLS, SLS_Size, (BYTE*)pFirmwareTableBuffer + 36, SLS_Size); SLS_Version = *(DWORD*)((BYTE*)SLS); SLS_Reserved = *(DWORD*)((BYTE*)SLS + 4); SLS_DataType = *(DWORD*)((BYTE*)SLS + 8); SLS_DataReserved = *(DWORD*)((BYTE*)SLS + 12); SLS_DataLenght = *(DWORD*)((BYTE*)SLS + 16); memcpy_s(ProductKey, SLS_DataLenght, (BYTE*)SLS + 20, SLS_DataLenght); if (verbose) { printf("Signature : %sn", Signature); printf("Length : %dn", Length); printf("Revision : %dn", Revision); printf("Checksum : %dn", Checksum); printf("OEMID : %sn", OEMID); printf("OEM Table ID : %sn", OEMTbleID); printf("OEM Revision : %dn", OEMRev); printf("Creator ID : %sn", CreatorID); printf("Creator Revision : %dn", CreatorRev); printf("SLS Version : %dn", SLS_Version); printf("SLS Reserved : %dn", SLS_Reserved); printf("SLS Data Type : %dn", SLS_DataType); printf("SLS Data Reserved : %dn", SLS_DataReserved); printf("SLS Data Lenght : %dn", SLS_DataLenght); printf("Key : %sn", ProductKey); /*printf ("nnPress [Enter] to continue . . ."); ?fflush (stdout); ?getchar();*/ } else { printf("%s", ProductKey); } } return 0; }