int _tmain(int argc, _TCHAR* argv[])
{
DWORD needBufferSize = 0;
// the seqence just for x86, but don't worry we know SMBIOS/DMI only exist on x86 platform
const BYTE byteSignature[] = { 'B', 'M', 'S', 'R' };
const DWORD Signature = *((DWORD*)byteSignature);
LPBYTE pBuff = NULL;
needBufferSize = GetSystemFirmwareTable(Signature, 0, NULL, 0);
_tprintf(TEXT("We need prepare %d bytes for recevie SMBIOS/DMI Table\n"), needBufferSize);
pBuff = (LPBYTE) malloc(needBufferSize);
if (pBuff)
{
GetSystemFirmwareTable(Signature, 0, pBuff, needBufferSize);
const PRawSMBIOSData pDMIData = (PRawSMBIOSData)pBuff;
_tprintf(TEXT("SMBIOS version:%d.%d\n"), pDMIData->SMBIOSMajorVersion, pDMIData->SMBIOSMinorVersion);
_tprintf(TEXT("DMI Revision:%x\n"), pDMIData->DmiRevision);
_tprintf(TEXT("Total length: %d\n"), pDMIData->Length);
_tprintf(TEXT("DMI at address %x\n"), (DWORD)((PBYTE)&pDMIData->SMBIOSTableData));
DumpSMBIOSStruct(&(pDMIData->SMBIOSTableData), pDMIData->Length);
}
else
_tprintf(TEXT("Can not allocate memory for recevice SMBIOS/DMI table\n"));
if (pBuff)
free(pBuff);
return 0;
}
errno_t SMBIOSParse(_Out_ ULONG64 *IDEN_UUID) {
//Parse some part of SMBIOS, from
//https://github.com/KunYi/DumpSMBIOS/blob/master/DumpSMBIOS/DumpSMBIOS.cpp
//Get SMBIOS
const BYTE byteSignature[] = { 'B', 'M', 'S', 'R' };
const DWORD Signature = *((DWORD*)byteSignature);
DWORD needBufferSize = GetSystemFirmwareTable(Signature, 0, NULL, 0);
LPBYTE pBuff = (LPBYTE)malloc(needBufferSize);
if (pBuff)
{
GetSystemFirmwareTable(Signature, 0, pBuff, needBufferSize);
}
else {
return E_OUTOFMEMORY;
}
//Parse
const PRawSMBIOSData pDMIData = (PRawSMBIOSData)pBuff;
LPBYTE p = (LPBYTE)(&(pDMIData->SMBIOSTableData));
const DWORD lastAddress = ((DWORD)p) + pDMIData->Length;
PSMBIOSHEADER pHeader;
for (;;) {
pHeader = (PSMBIOSHEADER)p;
switch (pHeader->Type)
{
case 0://BIOS Info
{
PBIOSInfo pBiosInfo = (PBIOSInfo)(pHeader);
IDEN_UUID[3] = pBiosInfo->Characteristics;
break;
}
case 1://ProcSysInfo
{
PSystemInfo pSysInfo = (PSystemInfo)(pHeader);
memcpy(IDEN_UUID, pSysInfo->UUID, sizeof(pSysInfo->UUID));
break;
}
case 4://CPUInfo
{
PProcessorInfo pProcInfo = (PProcessorInfo)(pHeader);
IDEN_UUID[2] = pProcInfo->ID;
break;
}
default:
break;
}
PBYTE nt = p + pHeader->Length; // point to struct end
while (0 != (*nt | *(nt + 1))) nt++; // skip string area
nt += 2;
if ((DWORD)nt > lastAddress)
break;
p = nt;
}
free(pBuff);
return NOERROR;
}
