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Tue, Apr 14, 2020 6:37:25 PM

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This commit is contained in:
Samuel Tulach
2020-04-14 18:37:25 +02:00
parent e50e79673d
commit 12d7e0f1d0
8 changed files with 499 additions and 28 deletions
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47
driver/main.c
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@@ -15,10 +15,6 @@ static const EFI_GUID ProtocolGuid
static const EFI_GUID VirtualGuid
= { 0x13FA7698, 0xC831, 0x49C7, { 0x87, 0xEA, 0x8F, 0x43, 0xFC, 0xC2, 0x51, 0x96 }};
// Global variable GUID (gEfiGlobalVariableGuid)
static const EFI_GUID VariableGuid
= { 0x8BE4DF61, 0x93CA, 0x11D2, { 0xAA, 0x0D, 0x00, 0xE0, 0x98, 0x03, 0x2B, 0x8C }};
// ExitBootServices GUID (gEfiEventExitBootServicesGuid)
static const EFI_GUID ExitGuid
= { 0x27ABF055, 0xB1B8, 0x4C26, { 0x80, 0x48, 0x74, 0x8F, 0x37, 0xBA, 0xA2, 0xDF }};
@@ -91,32 +87,25 @@ HookedSetVariable(
{
// Check of input is not null
if (VariableName != NULL && VariableName[0] != CHAR_NULL && VendorGuid != NULL)
{
// Check if GUID is correct
if (CompareGuid(VendorGuid, &VariableGuid))
{
// Testing (instant bsoder 2000)
RT->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL);
// Check if variable name is same as our declared one
// this is used to check if call is really from our program
// running in the OS (client)
if (StrnCmp(VariableName, VARIABLE_NAME,
(sizeof(VARIABLE_NAME) / sizeof(CHAR16)) - 1) == 0)
{
// Check if variable name is same as our declared one
// this is used to check if call is really from our program
// running in the OS (client)
if (StrnCmp(VariableName, VARIABLE_NAME,
(sizeof(VARIABLE_NAME) / sizeof(CHAR16)) - 1) == 0)
{
if (DataSize == 0 && Data == NULL)
{
if (DataSize == 0 && Data == NULL)
{
// Skip no data
return EFI_SUCCESS;
}
// Skip no data
return EFI_SUCCESS;
}
// Check if the data size is correct
if (DataSize == sizeof(MemoryCommand))
{
// We did it!
// Now we can call the magic function
return RunCommand((MemoryCommand*)Data);
}
// Check if the data size is correct
if (DataSize == sizeof(MemoryCommand))
{
// We did it!
// Now we can call the magic function
return RunCommand((MemoryCommand*)Data);
}
}
}
@@ -298,4 +287,6 @@ efi_main(IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
Print(L"Made by: Samuel Tulach\n");
Print(L"Thanks to: @Mattiwatti (EfiGuard), Roderick W. Smith (rodsbooks.com)\n\n");
Print(L"Driver has been loaded successfully. You can now boot to the OS.\n");
return EFI_SUCCESS;
}