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[KERNEL32] Implement System Firmware functions
- Implement EnumSystemFirmwareTables - Implement GetSystemFirmwareTable These functions currently using registry workaround and can be improved later. CORE-12105
This commit is contained in:
Stanislav Motylkov
Mark Jansen
parent
8acc68dd98
commit
d956eafda8
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@ -7,6 +7,7 @@
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* Christoph von Wittich
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* Thomas Weidenmueller
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* Gunnar Andre Dalsnes
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* Stanislav Motylkov
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*/
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/* INCLUDES *******************************************************************/
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@ -74,6 +75,82 @@ GetSystemInfoInternal(IN PSYSTEM_BASIC_INFORMATION BasicInfo,
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}
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}
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UINT
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WINAPI
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GetRawSMBiosTableFromRegistry(OUT PVOID pData)
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{
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static const LPCWSTR RegistryKey = L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\mssmbios\\Data";
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static const LPCWSTR ValueNameStr = L"SMBiosData";
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PKEY_VALUE_PARTIAL_INFORMATION KeyInfo = NULL;
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING KeyName;
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UNICODE_STRING ValueName;
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HANDLE KeyHandle;
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ULONG KeyInfoSize;
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ULONG ReturnSize = 0;
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NTSTATUS Status;
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RtlInitUnicodeString(&KeyName, RegistryKey);
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle,
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KEY_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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return 0;
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}
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// 256 KiB is more than enough for raw SMBIOS dump
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KeyInfoSize = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 256 * 1024;
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KeyInfo = RtlAllocateHeap(RtlGetProcessHeap(), 0, KeyInfoSize);
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if (KeyInfo == NULL)
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{
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NtClose(KeyHandle);
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goto cleanup;
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}
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RtlInitUnicodeString(&ValueName, ValueNameStr);
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Status = NtQueryValueKey(KeyHandle,
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&ValueName,
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KeyValuePartialInformation,
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KeyInfo,
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KeyInfoSize,
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&ReturnSize);
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NtClose(KeyHandle);
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ReturnSize = 0;
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if (!NT_SUCCESS(Status))
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{
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goto cleanup;
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}
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if (KeyInfo->Type != REG_BINARY)
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{
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goto cleanup;
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}
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ReturnSize = KeyInfo->DataLength;
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if (pData)
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{
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RtlCopyMemory(pData, KeyInfo->Data, KeyInfo->DataLength);
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}
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cleanup:
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if (KeyInfo)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, KeyInfo);
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}
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return ReturnSize;
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}
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/* PUBLIC FUNCTIONS ***********************************************************/
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/*
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@ -423,8 +500,32 @@ SetFirmwareEnvironmentVariableA(IN LPCSTR lpName,
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return 0;
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}
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/*
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* @unimplemented
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/**
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* @name EnumSystemFirmwareTables
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* @implemented
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*
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* Obtains firmware table identifiers.
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* https://msdn.microsoft.com/en-us/library/windows/desktop/ms724259(v=vs.85).aspx
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*
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* @param FirmwareTableProviderSignature
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* Can be either ACPI, FIRM, or RSMB.
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*
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* @param pFirmwareTableBuffer
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* Pointer to the output buffer, can be NULL.
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*
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* @param BufferSize
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* Size of the output buffer.
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*
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* @return
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* Actual size of the data in case of success, 0 otherwise.
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*
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* @remarks
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* Data would be written to buffer only if the specified size is
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* larger or equal to the actual size, in the other case Last Error
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* value would be set to ERROR_INSUFFICIENT_BUFFER.
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* In case of incorrect provider signature, Last Error value would be
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* set to ERROR_INVALID_FUNCTION.
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*
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*/
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UINT
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WINAPI
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@ -432,12 +533,104 @@ EnumSystemFirmwareTables(IN DWORD FirmwareTableProviderSignature,
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OUT PVOID pFirmwareTableBuffer,
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IN DWORD BufferSize)
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{
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STUB;
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return 0;
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UINT uSize = 0;
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UINT uCount = 0;
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DWORD dwError = ERROR_SUCCESS;
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PDWORD pBuffer = NULL;
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switch (FirmwareTableProviderSignature)
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{
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case 'ACPI':
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{
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/* FIXME: Not implemented yet */
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dwError = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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}
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case 'FIRM':
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{
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/* FIXME: Not implemented yet */
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dwError = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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}
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case 'RSMB':
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{
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if (GetRawSMBiosTableFromRegistry(NULL) > 0)
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{
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uCount = 1;
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uSize = uCount * sizeof(DWORD);
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pBuffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, uSize);
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if (!pBuffer)
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{
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SetLastError(ERROR_OUTOFMEMORY);
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return 0;
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}
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*pBuffer = 0;
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}
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break;
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}
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default:
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{
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dwError = ERROR_INVALID_FUNCTION;
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}
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}
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if (dwError == ERROR_SUCCESS)
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{
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if (uSize > 0 && BufferSize >= uSize)
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{
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/* Write to buffer */
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if (pFirmwareTableBuffer)
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{
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RtlMoveMemory(pFirmwareTableBuffer, pBuffer, uSize);
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}
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}
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else if (BufferSize < uSize)
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{
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dwError = ERROR_INSUFFICIENT_BUFFER;
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}
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}
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if (pBuffer)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, pBuffer);
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}
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SetLastError(dwError);
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return uSize;
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}
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/*
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* @unimplemented
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/**
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* @name GetSystemFirmwareTable
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* @implemented
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*
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* Obtains the firmware table data.
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* https://msdn.microsoft.com/en-us/library/windows/desktop/ms724379(v=vs.85).aspx
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*
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* @param FirmwareTableProviderSignature
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* Can be either ACPI, FIRM, or RSMB.
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*
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* @param FirmwareTableID
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* Correct table identifier.
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*
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* @param pFirmwareTableBuffer
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* Pointer to the output buffer, can be NULL.
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*
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* @param BufferSize
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* Size of the output buffer.
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*
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* @return
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* Actual size of the data in case of success, 0 otherwise.
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*
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* @remarks
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* Data would be written to buffer only if the specified size is
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* larger or equal to the actual size, in the other case Last Error
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* value would be set to ERROR_INSUFFICIENT_BUFFER.
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* In case of incorrect provider signature, Last Error value would be
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* set to ERROR_INVALID_FUNCTION.
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* Also Last Error value becomes ERROR_NOT_FOUND if incorrect
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* table identifier was specified along with ACPI provider, and
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* ERROR_INVALID_PARAMETER along with FIRM provider. The RSMB provider
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* accepts any table identifier.
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*
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*/
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UINT
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WINAPI
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@ -446,8 +639,81 @@ GetSystemFirmwareTable(IN DWORD FirmwareTableProviderSignature,
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OUT PVOID pFirmwareTableBuffer,
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IN DWORD BufferSize)
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{
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STUB;
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return 0;
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/* This function currently obtains data using a hack (registry workaround)
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which is located here: drivers/input/i8042prt/hwhacks.c
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i8042StoreSMBiosTables is responsible for writing SMBIOS table into registry
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Should be implemented correctly using NtQuerySystemInformation
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along with SystemFirmwareTableInformation class
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Reference: https://github.com/hfiref0x/VMDE/blob/master/src/vmde/sup.c
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*/
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UINT uSize = 0;
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DWORD dwError = ERROR_SUCCESS;
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PVOID pBuffer = NULL;
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switch (FirmwareTableProviderSignature)
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{
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case 'ACPI':
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{
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/* FIXME: Not implemented yet */
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dwError = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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}
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case 'FIRM':
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{
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/* FIXME: Not implemented yet */
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dwError = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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}
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case 'RSMB':
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{
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uSize = GetRawSMBiosTableFromRegistry(NULL);
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if (uSize > 0)
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{
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pBuffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, uSize);
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if (!pBuffer)
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{
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SetLastError(ERROR_OUTOFMEMORY);
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return 0;
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}
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GetRawSMBiosTableFromRegistry(pBuffer);
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}
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else
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{
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dwError = ERROR_NOT_FOUND;
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}
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break;
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}
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default:
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{
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dwError = ERROR_INVALID_FUNCTION;
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}
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}
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if (dwError == ERROR_SUCCESS)
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{
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if (uSize > 0 && BufferSize >= uSize)
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{
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/* Write to buffer */
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if (pFirmwareTableBuffer)
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{
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RtlMoveMemory(pFirmwareTableBuffer, pBuffer, uSize);
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}
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}
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else if (BufferSize < uSize)
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{
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dwError = ERROR_INSUFFICIENT_BUFFER;
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}
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}
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if (pBuffer)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, pBuffer);
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}
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SetLastError(dwError);
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return uSize;
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}
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/*
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