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-rw-r--r--Core/EM/HashService/HashService.c277
1 files changed, 277 insertions, 0 deletions
diff --git a/Core/EM/HashService/HashService.c b/Core/EM/HashService/HashService.c
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+++ b/Core/EM/HashService/HashService.c
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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 **
+//** **
+//**********************************************************************
+//********************************************************************** \ No newline at end of file
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