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// Copyright 2015 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "trunks/policy_session_impl.h"
#include <crypto/sha2.h>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "trunks/error_codes.h"
#include "trunks/mock_session_manager.h"
#include "trunks/mock_tpm.h"
#include "trunks/tpm_generated.h"
#include "trunks/trunks_factory_for_test.h"
using testing::_;
using testing::NiceMock;
using testing::Return;
using testing::SaveArg;
using testing::SetArgPointee;
namespace trunks {
class PolicySessionTest : public testing::Test {
public:
PolicySessionTest() {}
~PolicySessionTest() override {}
void SetUp() override {
factory_.set_session_manager(&mock_session_manager_);
factory_.set_tpm(&mock_tpm_);
}
HmacAuthorizationDelegate* GetHmacDelegate(PolicySessionImpl* session) {
return &(session->hmac_delegate_);
}
protected:
TrunksFactoryForTest factory_;
NiceMock<MockSessionManager> mock_session_manager_;
NiceMock<MockTpm> mock_tpm_;
};
TEST_F(PolicySessionTest, GetDelegateUninitialized) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_session_manager_, GetSessionHandle())
.WillRepeatedly(Return(kUninitializedHandle));
EXPECT_EQ(nullptr, session.GetDelegate());
}
TEST_F(PolicySessionTest, GetDelegateSuccess) {
PolicySessionImpl session(factory_);
EXPECT_EQ(GetHmacDelegate(&session), session.GetDelegate());
}
TEST_F(PolicySessionTest, StartBoundSessionSuccess) {
PolicySessionImpl session(factory_);
EXPECT_EQ(TPM_RC_SUCCESS,
session.StartBoundSession(TPM_RH_FIRST, "auth", true));
}
TEST_F(PolicySessionTest, StartBoundSessionFailure) {
PolicySessionImpl session(factory_);
TPM_HANDLE handle = TPM_RH_FIRST;
EXPECT_CALL(mock_session_manager_, StartSession(TPM_SE_POLICY, handle,
_, true, _))
.WillRepeatedly(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.StartBoundSession(handle, "auth", true));
}
TEST_F(PolicySessionTest, StartBoundSessionBadType) {
PolicySessionImpl session(factory_, TPM_SE_HMAC);
EXPECT_EQ(SAPI_RC_INVALID_SESSIONS,
session.StartBoundSession(TPM_RH_FIRST, "auth", true));
}
TEST_F(PolicySessionTest, StartUnboundSessionSuccess) {
PolicySessionImpl session(factory_);
EXPECT_EQ(TPM_RC_SUCCESS, session.StartUnboundSession(true));
}
TEST_F(PolicySessionTest, StartUnboundSessionFailure) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_session_manager_, StartSession(TPM_SE_POLICY, TPM_RH_NULL,
_, true, _))
.WillRepeatedly(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.StartUnboundSession(true));
}
TEST_F(PolicySessionTest, GetDigestSuccess) {
PolicySessionImpl session(factory_);
std::string digest;
TPM2B_DIGEST policy_digest;
policy_digest.size = SHA256_DIGEST_SIZE;
EXPECT_CALL(mock_tpm_, PolicyGetDigestSync(_, _, _, _))
.WillOnce(DoAll(SetArgPointee<2>(policy_digest),
Return(TPM_RC_SUCCESS)));
EXPECT_EQ(TPM_RC_SUCCESS, session.GetDigest(&digest));
EXPECT_EQ(SHA256_DIGEST_SIZE, digest.size());
}
TEST_F(PolicySessionTest, GetDigestFailure) {
PolicySessionImpl session(factory_);
std::string digest;
EXPECT_CALL(mock_tpm_, PolicyGetDigestSync(_, _, _, _))
.WillOnce(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.GetDigest(&digest));
}
TEST_F(PolicySessionTest, PolicyORSuccess) {
PolicySessionImpl session(factory_);
std::vector<std::string> digests;
digests.push_back("digest1");
digests.push_back("digest2");
digests.push_back("digest3");
TPML_DIGEST tpm_digests;
EXPECT_CALL(mock_tpm_, PolicyORSync(_, _, _, _))
.WillOnce(DoAll(SaveArg<2>(&tpm_digests),
Return(TPM_RC_SUCCESS)));
EXPECT_EQ(TPM_RC_SUCCESS, session.PolicyOR(digests));
EXPECT_EQ(tpm_digests.count, digests.size());
EXPECT_EQ(StringFrom_TPM2B_DIGEST(tpm_digests.digests[0]), digests[0]);
EXPECT_EQ(StringFrom_TPM2B_DIGEST(tpm_digests.digests[1]), digests[1]);
EXPECT_EQ(StringFrom_TPM2B_DIGEST(tpm_digests.digests[2]), digests[2]);
}
TEST_F(PolicySessionTest, PolicyORBadParam) {
PolicySessionImpl session(factory_);
std::vector<std::string> digests;
// We use 9 here because the maximum number of digests allowed by the TPM
// is 8. Therefore having 9 digests here should cause the code to fail.
digests.resize(9);
EXPECT_EQ(SAPI_RC_BAD_PARAMETER, session.PolicyOR(digests));
}
TEST_F(PolicySessionTest, PolicyORFailure) {
PolicySessionImpl session(factory_);
std::vector<std::string> digests;
EXPECT_CALL(mock_tpm_, PolicyORSync(_, _, _, _))
.WillOnce(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.PolicyOR(digests));
}
TEST_F(PolicySessionTest, PolicyPCRSuccess) {
PolicySessionImpl session(factory_);
std::string pcr_digest("digest");
int pcr_index = 1;
TPML_PCR_SELECTION pcr_select;
TPM2B_DIGEST pcr_value;
EXPECT_CALL(mock_tpm_, PolicyPCRSync(_, _, _, _, _))
.WillOnce(DoAll(SaveArg<2>(&pcr_value),
SaveArg<3>(&pcr_select),
Return(TPM_RC_SUCCESS)));
EXPECT_EQ(TPM_RC_SUCCESS, session.PolicyPCR(pcr_index, pcr_digest));
uint8_t pcr_select_index = pcr_index / 8;
uint8_t pcr_select_byte = 1 << (pcr_index % 8);
EXPECT_EQ(pcr_select.count, 1);
EXPECT_EQ(pcr_select.pcr_selections[0].hash, TPM_ALG_SHA256);
EXPECT_EQ(pcr_select.pcr_selections[0].sizeof_select, PCR_SELECT_MIN);
EXPECT_EQ(pcr_select.pcr_selections[0].pcr_select[pcr_select_index],
pcr_select_byte);
EXPECT_EQ(StringFrom_TPM2B_DIGEST(pcr_value),
crypto::SHA256HashString(pcr_digest));
}
TEST_F(PolicySessionTest, PolicyPCRFailure) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_tpm_, PolicyPCRSync(_, _, _, _, _))
.WillOnce(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.PolicyPCR(1, "pcr_digest"));
}
TEST_F(PolicySessionTest, PolicyPCRTrialWithNoDigest) {
PolicySessionImpl session(factory_, TPM_SE_TRIAL);
EXPECT_EQ(SAPI_RC_BAD_PARAMETER, session.PolicyPCR(1, ""));
}
TEST_F(PolicySessionTest, PolicyCommandCodeSuccess) {
PolicySessionImpl session(factory_);
TPM_CC command_code = TPM_CC_FIRST;
EXPECT_CALL(mock_tpm_, PolicyCommandCodeSync(_, _, command_code, _))
.WillOnce(Return(TPM_RC_SUCCESS));
EXPECT_EQ(TPM_RC_SUCCESS, session.PolicyCommandCode(TPM_CC_FIRST));
}
TEST_F(PolicySessionTest, PolicyCommandCodeFailure) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_tpm_, PolicyCommandCodeSync(_, _, _, _))
.WillOnce(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.PolicyCommandCode(TPM_CC_FIRST));
}
TEST_F(PolicySessionTest, PolicyAuthValueSuccess) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_tpm_, PolicyAuthValueSync(_, _, _))
.WillOnce(Return(TPM_RC_SUCCESS));
EXPECT_EQ(TPM_RC_SUCCESS, session.PolicyAuthValue());
}
TEST_F(PolicySessionTest, PolicyAuthValueFailure) {
PolicySessionImpl session(factory_);
EXPECT_CALL(mock_tpm_, PolicyAuthValueSync(_, _, _))
.WillOnce(Return(TPM_RC_FAILURE));
EXPECT_EQ(TPM_RC_FAILURE, session.PolicyAuthValue());
}
TEST_F(PolicySessionTest, EntityAuthorizationForwardingTest) {
PolicySessionImpl session(factory_);
std::string test_auth("test_auth");
session.SetEntityAuthorizationValue(test_auth);
HmacAuthorizationDelegate* hmac_delegate = GetHmacDelegate(&session);
std::string entity_auth = hmac_delegate->entity_authorization_value();
EXPECT_EQ(0, test_auth.compare(entity_auth));
}
} // namespace trunks
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