c9e8881516
Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14118 6f19259b-4bc3-4df7-8a09-765794883524
205 lines
9.1 KiB
C
205 lines
9.1 KiB
C
/** @file
|
|
This driver produces Security2 and Security architectural protocol based on SecurityManagementLib.
|
|
|
|
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
|
|
#include <Uefi.h>
|
|
#include <Protocol/Security.h>
|
|
#include <Protocol/Security2.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiDriverEntryPoint.h>
|
|
#include <Library/SecurityManagementLib.h>
|
|
|
|
//
|
|
// Handle for the Security Architectural Protocol instance produced by this driver
|
|
//
|
|
EFI_HANDLE mSecurityArchProtocolHandle = NULL;
|
|
|
|
/**
|
|
The EFI_SECURITY_ARCH_PROTOCOL (SAP) is used to abstract platform-specific
|
|
policy from the DXE core response to an attempt to use a file that returns a
|
|
given status for the authentication check from the section extraction protocol.
|
|
|
|
The possible responses in a given SAP implementation may include locking
|
|
flash upon failure to authenticate, attestation logging for all signed drivers,
|
|
and other exception operations. The File parameter allows for possible logging
|
|
within the SAP of the driver.
|
|
|
|
If File is NULL, then EFI_INVALID_PARAMETER is returned.
|
|
|
|
If the file specified by File with an authentication status specified by
|
|
AuthenticationStatus is safe for the DXE Core to use, then EFI_SUCCESS is returned.
|
|
|
|
If the file specified by File with an authentication status specified by
|
|
AuthenticationStatus is not safe for the DXE Core to use under any circumstances,
|
|
then EFI_ACCESS_DENIED is returned.
|
|
|
|
If the file specified by File with an authentication status specified by
|
|
AuthenticationStatus is not safe for the DXE Core to use right now, but it
|
|
might be possible to use it at a future time, then EFI_SECURITY_VIOLATION is
|
|
returned.
|
|
|
|
@param This The EFI_SECURITY_ARCH_PROTOCOL instance.
|
|
@param AuthenticationStatus
|
|
This is the authentication type returned from the Section
|
|
Extraction protocol. See the Section Extraction Protocol
|
|
Specification for details on this type.
|
|
@param File This is a pointer to the device path of the file that is
|
|
being dispatched. This will optionally be used for logging.
|
|
|
|
@retval EFI_SUCCESS Do nothing and return success.
|
|
@retval EFI_INVALID_PARAMETER File is NULL.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SecurityStubAuthenticateState (
|
|
IN CONST EFI_SECURITY_ARCH_PROTOCOL *This,
|
|
IN UINT32 AuthenticationStatus,
|
|
IN CONST EFI_DEVICE_PATH_PROTOCOL *File
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
Status = ExecuteSecurity2Handlers (EFI_AUTH_OPERATION_AUTHENTICATION_STATE,
|
|
AuthenticationStatus,
|
|
File,
|
|
NULL,
|
|
0,
|
|
FALSE
|
|
);
|
|
if (Status == EFI_SUCCESS) {
|
|
Status = ExecuteSecurityHandlers (AuthenticationStatus, File);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
The DXE Foundation uses this service to measure and/or verify a UEFI image.
|
|
|
|
This service abstracts the invocation of Trusted Computing Group (TCG) measured boot, UEFI
|
|
Secure boot, and UEFI User Identity infrastructure. For the former two, the DXE Foundation
|
|
invokes the FileAuthentication() with a DevicePath and corresponding image in
|
|
FileBuffer memory. The TCG measurement code will record the FileBuffer contents into the
|
|
appropriate PCR. The image verification logic will confirm the integrity and provenance of the
|
|
image in FileBuffer of length FileSize . The origin of the image will be DevicePath in
|
|
these cases.
|
|
If the FileBuffer is NULL, the interface will determine if the DevicePath can be connected
|
|
in order to support the User Identification policy.
|
|
|
|
@param This The EFI_SECURITY2_ARCH_PROTOCOL instance.
|
|
@param File A pointer to the device path of the file that is
|
|
being dispatched. This will optionally be used for logging.
|
|
@param FileBuffer A pointer to the buffer with the UEFI file image.
|
|
@param FileSize The size of the file.
|
|
@param BootPolicy A boot policy that was used to call LoadImage() UEFI service. If
|
|
FileAuthentication() is invoked not from the LoadImage(),
|
|
BootPolicy must be set to FALSE.
|
|
|
|
@retval EFI_SUCCESS The file specified by DevicePath and non-NULL
|
|
FileBuffer did authenticate, and the platform policy dictates
|
|
that the DXE Foundation may use the file.
|
|
@retval EFI_SUCCESS The device path specified by NULL device path DevicePath
|
|
and non-NULL FileBuffer did authenticate, and the platform
|
|
policy dictates that the DXE Foundation may execute the image in
|
|
FileBuffer.
|
|
@retval EFI_SUCCESS FileBuffer is NULL and current user has permission to start
|
|
UEFI device drivers on the device path specified by DevicePath.
|
|
@retval EFI_SECURITY_VIOLATION The file specified by DevicePath and FileBuffer did not
|
|
authenticate, and the platform policy dictates that the file should be
|
|
placed in the untrusted state. The image has been added to the file
|
|
execution table.
|
|
@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.
|
|
@retval EFI_SECURITY_VIOLATION FileBuffer is NULL and the user has no
|
|
permission to start UEFI device drivers on the device path specified
|
|
by DevicePath.
|
|
@retval EFI_SECURITY_VIOLATION FileBuffer is not NULL and the user has no permission to load
|
|
drivers from the device path specified by DevicePath. The
|
|
image has been added into the list of the deferred images.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Security2StubAuthenticate (
|
|
IN CONST EFI_SECURITY2_ARCH_PROTOCOL *This,
|
|
IN CONST EFI_DEVICE_PATH_PROTOCOL *File,
|
|
IN VOID *FileBuffer,
|
|
IN UINTN FileSize,
|
|
IN BOOLEAN BootPolicy
|
|
)
|
|
{
|
|
return ExecuteSecurity2Handlers (EFI_AUTH_OPERATION_VERIFY_IMAGE |
|
|
EFI_AUTH_OPERATION_DEFER_IMAGE_LOAD |
|
|
EFI_AUTH_OPERATION_MEASURE_IMAGE |
|
|
EFI_AUTH_OPERATION_CONNECT_POLICY,
|
|
0,
|
|
File,
|
|
FileBuffer,
|
|
FileSize,
|
|
BootPolicy
|
|
);
|
|
}
|
|
|
|
//
|
|
// Security2 and Security Architectural Protocol instance produced by this driver
|
|
//
|
|
EFI_SECURITY_ARCH_PROTOCOL mSecurityStub = {
|
|
SecurityStubAuthenticateState
|
|
};
|
|
|
|
EFI_SECURITY2_ARCH_PROTOCOL mSecurity2Stub = {
|
|
Security2StubAuthenticate
|
|
};
|
|
|
|
/**
|
|
Installs Security2 and Security Architectural Protocol.
|
|
|
|
@param ImageHandle The image handle of this driver.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS Install the sample Security Architectural Protocol successfully.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SecurityStubInitialize (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Make sure the Security Architectural Protocol is not already installed in the system
|
|
//
|
|
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiSecurity2ArchProtocolGuid);
|
|
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiSecurityArchProtocolGuid);
|
|
|
|
//
|
|
// Install the Security Architectural Protocol onto a new handle
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&mSecurityArchProtocolHandle,
|
|
&gEfiSecurity2ArchProtocolGuid,
|
|
&mSecurity2Stub,
|
|
&gEfiSecurityArchProtocolGuid,
|
|
&mSecurityStub,
|
|
NULL
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|