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/** @file
Implement image authentication status check in UEFI2.3.1.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiDxe.h>
#include <Library/SecurityManagementLib.h>
/**
Check image authentication status returned from Section Extraction Protocol
@param[in] AuthenticationStatus This is the authentication status returned from
the Section Extraction Protocol when reading the input file.
@param[in] File This is a pointer to the device path of the file that is
being dispatched. This will optionally be used for logging.
@param[in] FileBuffer File buffer matches the input file device path.
@param[in] FileSize Size of File buffer matches the input file device path.
@param[in] BootPolicy A boot policy that was used to call LoadImage() UEFI service.
@retval EFI_SUCCESS The input file specified by File did authenticate, and the
platform policy dictates that the DXE Core may use File.
@retval EFI_ACCESS_DENIED The file specified by File and FileBuffer did not
authenticate, and the platform policy dictates that the DXE
Foundation many not use File.
**/
EFI_STATUS
EFIAPI
DxeImageAuthenticationStatusHandler (
IN UINT32 AuthenticationStatus,
IN CONST EFI_DEVICE_PATH_PROTOCOL *File OPTIONAL,
IN VOID *FileBuffer,
IN UINTN FileSize,
IN BOOLEAN BootPolicy
)
{
if ((AuthenticationStatus & EFI_AUTH_STATUS_IMAGE_SIGNED) != 0) {
if ((AuthenticationStatus & (EFI_AUTH_STATUS_TEST_FAILED | EFI_AUTH_STATUS_NOT_TESTED)) != 0) {
return EFI_ACCESS_DENIED;
}
}
return EFI_SUCCESS;
}
/**
Register image authentication status check handler.
@param ImageHandle ImageHandle of the loaded driver.
@param SystemTable Pointer to the EFI System Table.
@retval EFI_SUCCESS The handlers were registered successfully.
**/
EFI_STATUS
EFIAPI
DxeImageAuthenticationStatusLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return RegisterSecurity2Handler (
DxeImageAuthenticationStatusHandler,
EFI_AUTH_OPERATION_AUTHENTICATION_STATE
);
}
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