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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2012, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Core/Modules/HashService/HashService.c 2 8/28/12 4:28p Artems $
//
// $Revision: 2 $
//
// $Date: 8/28/12 4:28p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Core/Modules/HashService/HashService.c $
//
// 2 8/28/12 4:28p Artems
// [TAG] EIP N/A
// [Category] New Feature
// [Description] Implementation of hash protocol
// [Files] HasService.c HashService.sdl
//
// 1 5/24/12 3:33p Artems
// [TAG] EIP N/A
// [Category] New Feature
// [Description] Added HashService protocol infrastructure
// [Files] HashService.cif
// HashService.sdl
// HashService.mak
// HashService.c
//
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: HashService.c
//
// Description:
//
//<AMI_FHDR_END>
//**********************************************************************
#include <AmiDxeLib.h>
#include <Protocol\Hash.h>
#include <Protocol\DriverBinding.h>
#include <Protocol\ServiceBinding.h>
#include <Protocol\AmiDigitalSignature.h>
/* Dummy DriverBinding protocol */
EFI_STATUS HashServiceDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
{ return EFI_UNSUPPORTED; }
EFI_STATUS HashServiceDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
{ return EFI_UNSUPPORTED; }
EFI_STATUS HashServiceDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer)
{ return EFI_UNSUPPORTED; }
EFI_DRIVER_BINDING_PROTOCOL HashServiceDriverBindingProtocol = {
HashServiceDriverBindingSupported,
HashServiceDriverBindingStart,
HashServiceDriverBindingStop,
0x10,
NULL,
NULL
};
static EFI_GUID AmiDigitalSignatureProtocolGuid = AMI_DIGITAL_SIGNATURE_PROTOCOL_GUID;
static AMI_DIGITAL_SIGNATURE_PROTOCOL *AmiDigitalSignatureProtocol = NULL;
static DLIST HashChildList;
typedef struct {
DLINK Link;
EFI_HANDLE Handle;
EFI_HASH_PROTOCOL Protocol;
} HASH_CHILD_LINK;
/* Hash service binding protocol */
EFI_STATUS HashServiceCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN OUT EFI_HANDLE *ChildHandle
);
EFI_STATUS HashServiceDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL*This,
IN EFI_HANDLE ChildHandle
);
EFI_SERVICE_BINDING_PROTOCOL HashServiceBindingProtocol = {
HashServiceCreateChild,
HashServiceDestroyChild
};
EFI_STATUS HsGetHashSize(
IN CONST EFI_HASH_PROTOCOL *This,
IN CONST EFI_GUID *HashAlgorithm,
OUT UINTN *HashSize
)
{
if(HashSize == NULL || This == NULL || HashAlgorithm == NULL)
return EFI_INVALID_PARAMETER;
if(!guidcmp((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha1Guid)) {
*HashSize = SHA1_DIGEST_SIZE;
} else if(!guidcmp((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha256Guid)) {
*HashSize = SHA256_DIGEST_SIZE;
} else {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
EFI_STATUS HsHash(
IN CONST EFI_HASH_PROTOCOL *This,
IN CONST EFI_GUID *HashAlgorithm,
IN BOOLEAN Extend,
IN CONST UINT8 *Message,
IN UINT64 MessageSize,
IN OUT EFI_HASH_OUTPUT *Hash
)
{
UINTN Count;
UINTN Size[2];
UINT8 *Chunks[2];
UINTN HashSize;
EFI_STATUS Status;
UINT8 *Buffer;
if(Message == NULL || Hash == NULL || This == NULL || HashAlgorithm == NULL)
return EFI_INVALID_PARAMETER;
if(!guidcmp((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha1Guid)) {
Buffer = *(Hash->Sha1Hash);
HashSize = SHA1_DIGEST_SIZE;
} else if(!guidcmp((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha256Guid)) {
Buffer = *(Hash->Sha256Hash);
HashSize = SHA256_DIGEST_SIZE;
} else {
return EFI_UNSUPPORTED;
}
if(Extend) {
/*
Count = 2;
Size[0] = (UINTN)MessageSize;
Chunks[0] = (UINT8*)Message;
*/
return EFI_UNSUPPORTED;
} else {
Count = 1;
Size[0] = (UINTN)MessageSize;
Chunks[0] = (UINT8*)Message;
}
Status = AmiDigitalSignatureProtocol->Hash(AmiDigitalSignatureProtocol,
HashAlgorithm,
Count,
Chunks,
Size,
Buffer);
return Status;
}
EFI_STATUS HashServiceEntryPoint(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE Handle = NULL;
InitAmiLib(ImageHandle,SystemTable);
Status = pBS->LocateProtocol(&AmiDigitalSignatureProtocolGuid, NULL, &AmiDigitalSignatureProtocol);
if(EFI_ERROR(Status))
return Status;
DListInit(&HashChildList);
HashServiceDriverBindingProtocol.ImageHandle = ImageHandle;
HashServiceDriverBindingProtocol.DriverBindingHandle = NULL;
Status = pBS->InstallMultipleProtocolInterfaces(
&HashServiceDriverBindingProtocol.DriverBindingHandle,
&gEfiDriverBindingProtocolGuid,
&HashServiceDriverBindingProtocol,
&gEfiHashServiceBindingProtocolGuid,
&HashServiceBindingProtocol,
NULL);
return Status;
}
EFI_STATUS HashServiceCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN OUT EFI_HANDLE *ChildHandle
)
{
EFI_STATUS Status;
HASH_CHILD_LINK *NewLink;
Status = pBS->AllocatePool(EfiBootServicesData, sizeof(HASH_CHILD_LINK), &NewLink);
if(EFI_ERROR(Status))
return Status;
NewLink->Handle = *ChildHandle;
NewLink->Protocol.GetHashSize = HsGetHashSize;
NewLink->Protocol.Hash = HsHash;
DListAdd(&HashChildList, (DLINK *)NewLink);
Status = pBS->InstallMultipleProtocolInterfaces(&(NewLink->Handle), &gEfiHashProtocolGuid, &(NewLink->Protocol), NULL);
if(!EFI_ERROR(Status) && *ChildHandle == NULL)
*ChildHandle = NewLink->Handle;
return Status;
}
EFI_STATUS HashServiceDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL*This,
IN EFI_HANDLE ChildHandle
)
{
EFI_STATUS Status;
EFI_HASH_PROTOCOL *Instance;
VOID *Start;
Status = pBS->HandleProtocol(ChildHandle, &gEfiHashProtocolGuid, &Instance);
if(EFI_ERROR(Status))
return Status;
Status = pBS->UninstallMultipleProtocolInterfaces(ChildHandle, &gEfiHashProtocolGuid, Instance);
if(!EFI_ERROR(Status)) {
Start = OUTTER(Instance, Protocol, HASH_CHILD_LINK);
DListDelete(&HashChildList, (DLINK *)Start);
pBS->FreePool(Start);
}
return Status;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2012, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
