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/** @file
Unit tests for the implementation of SecureBootVariableLib.
Copyright (c) 2022, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/GoogleTestLib.h>
#include <GoogleTest/Library/MockUefiLib.h>
#include <GoogleTest/Library/MockUefiRuntimeServicesTableLib.h>
extern "C" {
#include <Uefi.h>
#include <UefiSecureBoot.h>
#include <Guid/AuthenticatedVariableFormat.h>
#include <Guid/ImageAuthentication.h>
#include <Library/SecureBootVariableLib.h>
#include <Library/MemoryAllocationLib.h>
}
using namespace testing;
//////////////////////////////////////////////////////////////////////////////
class SetSecureBootModeTest : public Test {
protected:
MockUefiRuntimeServicesTableLib RtServicesMock;
UINT8 SecureBootMode;
EFI_STATUS Status;
void SetUp() override {
// Any random magic number can be used for these tests
SecureBootMode = 0xAB;
}
};
// Test SetSecureBootMode() API from SecureBootVariableLib to verify the
// expected error is returned when the call to gRT->SetVariable() fails.
TEST_F(SetSecureBootModeTest, SetVarError) {
EXPECT_CALL(RtServicesMock, gRT_SetVariable)
.WillOnce(Return(EFI_INVALID_PARAMETER));
Status = SetSecureBootMode(SecureBootMode);
EXPECT_EQ(Status, EFI_INVALID_PARAMETER);
}
// Test SetSecureBootMode() API from SecureBootVariableLib to verify the
// expected secure boot mode is written to the correct variable in the call
// to gRT->SetVariable().
TEST_F(SetSecureBootModeTest, PropogateModeToSetVar) {
EXPECT_CALL(RtServicesMock,
gRT_SetVariable(
Char16StrEq(EFI_CUSTOM_MODE_NAME),
BufferEq(&gEfiCustomModeEnableGuid, sizeof(EFI_GUID)),
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
sizeof(SecureBootMode),
BufferEq(&SecureBootMode, sizeof(SecureBootMode))))
.WillOnce(Return(EFI_SUCCESS));
Status = SetSecureBootMode(SecureBootMode);
EXPECT_EQ(Status, EFI_SUCCESS);
}
//////////////////////////////////////////////////////////////////////////////
class GetSetupModeTest : public Test {
protected:
MockUefiRuntimeServicesTableLib RtServicesMock;
UINT8 SetupMode;
EFI_STATUS Status;
UINT8 ExpSetupMode;
void SetUp() override {
// Any random magic number can be used for these tests
ExpSetupMode = 0xAB;
}
};
// Test GetSetupMode() API from SecureBootVariableLib to verify the expected
// error is returned when the call to gRT->GetVariable() fails.
TEST_F(GetSetupModeTest, GetVarError) {
EXPECT_CALL(RtServicesMock, gRT_GetVariable)
.WillOnce(Return(EFI_INVALID_PARAMETER));
Status = GetSetupMode (&SetupMode);
EXPECT_EQ(Status, EFI_INVALID_PARAMETER);
}
// Test GetSetupMode() API from SecureBootVariableLib to verify the expected
// setup mode is returned (and with a success return code) when the mode is
// successfully read from the call to gRT->GetVariable().
TEST_F(GetSetupModeTest, FetchModeFromGetVar) {
EXPECT_CALL(RtServicesMock,
gRT_GetVariable(
Char16StrEq(EFI_SETUP_MODE_NAME),
BufferEq(&gEfiGlobalVariableGuid, sizeof(EFI_GUID)),
_,
Pointee(Eq(sizeof(SetupMode))),
NotNull()))
.WillOnce(DoAll(
SetArgPointee<3>(sizeof(ExpSetupMode)),
SetArgBuffer<4>(&ExpSetupMode, sizeof(ExpSetupMode)),
Return(EFI_SUCCESS)));
Status = GetSetupMode (&SetupMode);
ASSERT_EQ(Status, EFI_SUCCESS);
EXPECT_EQ(SetupMode, ExpSetupMode);
}
//////////////////////////////////////////////////////////////////////////////
class IsSecureBootEnabledTest : public Test {
protected:
MockUefiLib UefiLibMock;
BOOLEAN Enabled;
};
// Test IsSecureBootEnabled() API from SecureBootVariableLib to verify FALSE
// is returned when the call to GetEfiGlobalVariable2() fails.
TEST_F(IsSecureBootEnabledTest, GetVarError) {
EXPECT_CALL(UefiLibMock, GetEfiGlobalVariable2)
.WillOnce(Return(EFI_ABORTED));
Enabled = IsSecureBootEnabled ();
EXPECT_EQ(Enabled, FALSE);
}
//////////////////////////////////////////////////////////////////////////////
class IsSecureBootEnabledAllocTest : public IsSecureBootEnabledTest {
protected:
UINT8 *BootEnabledBuffer;
void SetUp() override {
BootEnabledBuffer = (UINT8*) AllocatePool(1);
ASSERT_NE(BootEnabledBuffer, nullptr);
}
};
// Test IsSecureBootEnabled() API from SecureBootVariableLib to verify TRUE
// is returned when the call to GetEfiGlobalVariable2() is successful and
// returns SECURE_BOOT_MODE_ENABLE.
TEST_F(IsSecureBootEnabledAllocTest, IsEnabled) {
*BootEnabledBuffer = SECURE_BOOT_MODE_ENABLE;
EXPECT_CALL(UefiLibMock,
GetEfiGlobalVariable2(
Char16StrEq(EFI_SECURE_BOOT_MODE_NAME),
NotNull(),
_))
.WillOnce(DoAll(
SetArgBuffer<1>(&BootEnabledBuffer, sizeof(VOID*)),
Return(EFI_SUCCESS)));
Enabled = IsSecureBootEnabled ();
EXPECT_EQ(Enabled, TRUE);
}
// Test IsSecureBootEnabled() API from SecureBootVariableLib to verify FALSE
// is returned when the call to GetEfiGlobalVariable2() is successful and
// returns SECURE_BOOT_MODE_DISABLE.
TEST_F(IsSecureBootEnabledAllocTest, IsDisabled) {
*BootEnabledBuffer = SECURE_BOOT_MODE_DISABLE;
EXPECT_CALL(UefiLibMock,
GetEfiGlobalVariable2(
Char16StrEq(EFI_SECURE_BOOT_MODE_NAME),
NotNull(),
_))
.WillOnce(DoAll(
SetArgBuffer<1>(&BootEnabledBuffer, sizeof(VOID*)),
Return(EFI_SUCCESS)));
Enabled = IsSecureBootEnabled ();
EXPECT_EQ(Enabled, FALSE);
}
int main(int argc, char* argv[]) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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