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#include <Library/BaseMemoryLib.h>
#include <Library/DevicePathLib.h>
#include <Library/HiiLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiHiiServicesLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Protocol/HiiConfigAccess.h>
#include <Protocol/Hash2.h>
#include <Protocol/ServiceBinding.h>
#include "Data.h"
extern UINT8 FormBin[];
#pragma pack(1)
typedef struct {
VENDOR_DEVICE_PATH VendorDevicePath;
EFI_DEVICE_PATH_PROTOCOL End;
} HII_VENDOR_DEVICE_PATH;
#pragma pack()
HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath = {
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
DATAPATH_GUID
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
(UINT8) (END_DEVICE_PATH_LENGTH),
(UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
}
}
};
EFI_HII_HANDLE mHiiHandle = NULL;
EFI_HANDLE mDriverHandle = NULL;
EFI_HII_CONFIG_ACCESS_PROTOCOL mConfigAccess;
EFI_GUID StorageGuid = STORAGE_GUID;
EFI_STRING StorageName = L"FormData";
VARIABLE_STRUCTURE FormStorage;
EFI_SERVICE_BINDING_PROTOCOL* hash2ServiceBinding;
EFI_HASH2_PROTOCOL* hash2Protocol;
EFI_HANDLE hash2ChildHandle = NULL;
STATIC
EFI_STATUS
EFIAPI
ExtractConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
)
{
BOOLEAN AllocatedRequest = FALSE;
if (Progress == NULL || Results == NULL) {
return EFI_INVALID_PARAMETER;
}
if ((Request != NULL) && !HiiIsConfigHdrMatch(Request, &StorageGuid, StorageName)) {
return EFI_NOT_FOUND;
}
EFI_STRING ConfigRequest = Request;
if ((Request == NULL) || (StrStr (Request, L"OFFSET") == NULL)) {
EFI_STRING ConfigRequestHdr = HiiConstructConfigHdr(&StorageGuid, StorageName, mDriverHandle);
UINTN Size = (StrLen(ConfigRequestHdr) + StrLen(L"&OFFSET=0&WIDTH=") + sizeof(UINTN)*2 + 1) * sizeof(CHAR16);
ConfigRequest = AllocateZeroPool(Size);
AllocatedRequest = TRUE;
UnicodeSPrint(ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, sizeof(VARIABLE_STRUCTURE));
FreePool(ConfigRequestHdr);
}
EFI_STATUS Status = gHiiConfigRouting->BlockToConfig(gHiiConfigRouting,
ConfigRequest,
(UINT8*)&FormStorage,
sizeof(VARIABLE_STRUCTURE),
Results,
Progress);
if (AllocatedRequest) {
FreePool(ConfigRequest);
if (Request == NULL) {
*Progress = NULL;
} else if (StrStr(Request, L"OFFSET") == NULL) {
*Progress = Request + StrLen(Request);
}
}
return Status;
}
STATIC
EFI_STATUS
EFIAPI
RouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
if (Configuration == NULL || Progress == NULL) {
return EFI_INVALID_PARAMETER;
}
UINTN BlockSize = sizeof(VARIABLE_STRUCTURE);
EFI_STATUS Status = gHiiConfigRouting->ConfigToBlock(gHiiConfigRouting,
Configuration,
(UINT8*)&FormStorage,
&BlockSize,
Progress);
return Status;
}
BOOLEAN OldPasswordVerified = FALSE;
EFI_STATUS ComputeStringHash(EFI_STRING Password, UINT8* HashedPassword)
{
EFI_GUID HashGuid = EFI_HASH_ALGORITHM_SHA512_GUID;
EFI_HASH2_OUTPUT Hash;
EFI_STATUS Status = hash2Protocol->Hash(hash2Protocol,
&HashGuid,
(UINT8*)Password,
StrLen(Password)*sizeof(CHAR16),
&Hash);
if (EFI_ERROR(Status)) {
return Status;
}
CopyMem(HashedPassword, Hash.Sha512Hash, HASHED_PASSWORD_SIZE);
return EFI_SUCCESS;
}
EFI_STATUS HandlePasswordInput(EFI_STRING Password)
{
EFI_STATUS Status;
if (Password[0] == 0) {
// Form Browser checks if password exists
if (FormStorage.Password[0] != 0) {
return EFI_ALREADY_STARTED;
} else {
return EFI_SUCCESS;
}
} else {
// Form Browser sends password value
// It can be old password to check or initial/updated password to set
if (FormStorage.Password[0] == 0) {
// Set initial password
ComputeStringHash(Password, FormStorage.Password);
if (EFI_ERROR(Status)) {
return Status;
}
return EFI_SUCCESS;
}
if (!OldPasswordVerified) {
// Check old password
UINT8 TempHash[HASHED_PASSWORD_SIZE];
ComputeStringHash(Password, TempHash);
if (CompareMem(TempHash, FormStorage.Password, HASHED_PASSWORD_SIZE))
return EFI_NOT_READY;
OldPasswordVerified = TRUE;
return EFI_SUCCESS;
}
// Update password
Status = ComputeStringHash(Password, FormStorage.Password);
if (EFI_ERROR(Status)) {
return Status;
}
OldPasswordVerified = FALSE;
return EFI_SUCCESS;
}
}
STATIC
EFI_STATUS
EFIAPI
Callback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN OUT EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_STATUS Status;
if ((QuestionId == KEY_PASSWORD) && (Action == EFI_BROWSER_ACTION_CHANGING)) {
if (Value->string == 0) {
return EFI_UNSUPPORTED;
}
EFI_STRING Password = HiiGetString(mHiiHandle, Value->string, "en-US");
Status = HandlePasswordInput(Password);
FreePool(Password);
return Status;
}
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
PasswordFormWithHashUnload (
EFI_HANDLE ImageHandle
)
{
hash2ServiceBinding->DestroyChild(hash2ServiceBinding, hash2ChildHandle);
if (mHiiHandle != NULL)
HiiRemovePackages(mHiiHandle);
EFI_STATUS Status = gBS->UninstallMultipleProtocolInterfaces(
mDriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&mConfigAccess,
NULL);
return Status;
}
EFI_STATUS
EFIAPI
PasswordFormWithHashEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = gBS->LocateProtocol(&gEfiHash2ServiceBindingProtocolGuid,
NULL,
(VOID **)&hash2ServiceBinding);
if (EFI_ERROR(Status)) {
Print(L"Error! Can't locate gEfiHash2ServiceBindingProtocolGuid: %r\n", Status);
return Status;
}
Status = hash2ServiceBinding->CreateChild(hash2ServiceBinding,
&hash2ChildHandle);
if (EFI_ERROR(Status)) {
Print(L"Error! Can't create child on gEfiHash2ServiceBindingProtocolGuid: %r\n", Status);
return Status;
}
Status = gBS->OpenProtocol(hash2ChildHandle,
&gEfiHash2ProtocolGuid,
(VOID **)&hash2Protocol,
NULL,
hash2ChildHandle,
EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
if (EFI_ERROR(Status)) {
Print(L"Error! Can't open gEfiHashProtocolGuid: %r\n", Status);
return Status;
}
mConfigAccess.ExtractConfig = &ExtractConfig;
mConfigAccess.RouteConfig = &RouteConfig;
mConfigAccess.Callback = &Callback;
Status = gBS->InstallMultipleProtocolInterfaces(
&mDriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&mConfigAccess,
NULL
);
if (EFI_ERROR (Status)) {
return Status;
}
mHiiHandle = HiiAddPackages(
&gEfiCallerIdGuid,
mDriverHandle,
PasswordFormWithHashStrings,
FormBin,
NULL
);
if (mHiiHandle == NULL) {
gBS->UninstallMultipleProtocolInterfaces(
mDriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&mConfigAccess,
NULL);
return EFI_OUT_OF_RESOURCES;
}
EFI_STRING ConfigStr = HiiConstructConfigHdr(&StorageGuid, StorageName, mDriverHandle);
UINT16 DefaultId = 0;
if (!HiiSetToDefaults(ConfigStr, DefaultId)) {
Print(L"Error! Can't set default configuration #%d\n", DefaultId);
}
return EFI_SUCCESS;
}
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