| // Copyright (c) 2012 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 "login_manager/policy_service.h" |
| |
| #include <stdint.h> |
| |
| #include <algorithm> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include <base/memory/ptr_util.h> |
| #include <base/run_loop.h> |
| #include <base/threading/thread.h> |
| #include <brillo/message_loops/fake_message_loop.h> |
| #include <chromeos/dbus/service_constants.h> |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| |
| #include "bindings/device_management_backend.pb.h" |
| #include "login_manager/blob_util.h" |
| #include "login_manager/matchers.h" |
| #include "login_manager/mock_policy_key.h" |
| #include "login_manager/mock_policy_service.h" |
| #include "login_manager/mock_policy_store.h" |
| |
| namespace em = enterprise_management; |
| |
| using ::testing::DoAll; |
| using ::testing::InvokeWithoutArgs; |
| using ::testing::Mock; |
| using ::testing::Return; |
| using ::testing::ReturnRef; |
| using ::testing::Sequence; |
| using ::testing::SetArgumentPointee; |
| using ::testing::StrictMock; |
| using ::testing::_; |
| |
| namespace login_manager { |
| |
| class PolicyServiceTest : public testing::Test { |
| public: |
| PolicyServiceTest() = default; |
| |
| virtual void SetUp() { |
| fake_loop_.SetAsCurrent(); |
| store_ = new StrictMock<MockPolicyStore>; |
| service_ = base::MakeUnique<PolicyService>( |
| std::unique_ptr<PolicyStore>(store_), &key_); |
| service_->set_delegate(&delegate_); |
| } |
| |
| void InitPolicy(const std::vector<uint8_t>& data, |
| const std::vector<uint8_t>& signature, |
| const std::vector<uint8_t>& key, |
| const std::vector<uint8_t>& key_signature) { |
| policy_proto_.Clear(); |
| if (!data.empty()) |
| policy_proto_.set_policy_data(BlobToString(data)); |
| if (!signature.empty()) |
| policy_proto_.set_policy_data_signature(BlobToString(signature)); |
| if (!key.empty()) |
| policy_proto_.set_new_public_key(BlobToString(key)); |
| if (!key_signature.empty()) |
| policy_proto_.set_new_public_key_signature(BlobToString(key_signature)); |
| } |
| |
| void ExpectVerifyAndSetPolicy(Sequence* sequence) { |
| EXPECT_CALL(key_, Verify(fake_data_, fake_sig_)) |
| .InSequence(*sequence) |
| .WillOnce(Return(true)); |
| EXPECT_CALL(*store_, Set(ProtoEq(policy_proto_))) |
| .Times(1) |
| .InSequence(*sequence); |
| } |
| |
| void ExpectSetPolicy(Sequence* sequence) { |
| EXPECT_CALL(*store_, Set(ProtoEq(policy_proto_))) |
| .Times(1) |
| .InSequence(*sequence); |
| } |
| |
| void ExpectPersistKey(Sequence* sequence) { |
| EXPECT_CALL(key_, Persist()).InSequence(*sequence).WillOnce(Return(true)); |
| EXPECT_CALL(delegate_, OnKeyPersisted(true)); |
| } |
| |
| void ExpectPersistPolicy(Sequence* sequence) { |
| EXPECT_CALL(*store_, Persist()).InSequence(*sequence).WillOnce( |
| Return(true)); |
| EXPECT_CALL(delegate_, OnPolicyPersisted(true)); |
| } |
| |
| void ExpectKeyEqualsFalse(Sequence* sequence) { |
| EXPECT_CALL(key_, Equals(_)).InSequence(*sequence).WillRepeatedly( |
| Return(false)); |
| } |
| |
| void ExpectKeyPopulated(Sequence* sequence, bool return_value) { |
| EXPECT_CALL(key_, IsPopulated()).InSequence(*sequence).WillRepeatedly( |
| Return(return_value)); |
| } |
| |
| void ExpectStoreFail(int flags, |
| SignatureCheck signature_check, |
| const std::string& code) { |
| EXPECT_CALL(key_, Persist()).Times(0); |
| EXPECT_CALL(*store_, Set(_)).Times(0); |
| EXPECT_CALL(*store_, Persist()).Times(0); |
| |
| EXPECT_FALSE( |
| service_->Store(SerializeAsBlob(policy_proto_), flags, signature_check, |
| MockPolicyService::CreateExpectFailureCallback())); |
| fake_loop_.Run(); |
| } |
| |
| PolicyStore* store() { return service_->store(); } |
| PolicyKey* key() { return service_->key(); } |
| |
| static const int kAllKeyFlags; |
| static const char kSignalSuccess[]; |
| static const char kSignalFailure[]; |
| |
| const std::vector<uint8_t> fake_data_ = StringToBlob("fake_data"); |
| const std::vector<uint8_t> fake_sig_ = StringToBlob("fake_signature"); |
| const std::vector<uint8_t> fake_key_ = StringToBlob("fake_key"); |
| const std::vector<uint8_t> fake_key_sig_ = |
| StringToBlob("fake_key_signature"); |
| |
| const std::vector<uint8_t> empty_blob_; |
| |
| // Various representations of the policy protobuf. |
| em::PolicyFetchResponse policy_proto_; |
| |
| brillo::FakeMessageLoop fake_loop_{nullptr}; |
| |
| // Use StrictMock to make sure that no unexpected policy or key mutations can |
| // occur without the test failing. |
| StrictMock<MockPolicyKey> key_; |
| StrictMock<MockPolicyStore>* store_; |
| MockPolicyServiceDelegate delegate_; |
| |
| std::unique_ptr<PolicyService> service_; |
| }; |
| |
| const int PolicyServiceTest::kAllKeyFlags = PolicyService::KEY_ROTATE | |
| PolicyService::KEY_INSTALL_NEW | |
| PolicyService::KEY_CLOBBER; |
| const char PolicyServiceTest::kSignalSuccess[] = "success"; |
| const char PolicyServiceTest::kSignalFailure[] = "failure"; |
| |
| TEST_F(PolicyServiceTest, Store) { |
| InitPolicy(fake_data_, fake_sig_, empty_blob_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| EXPECT_CALL(key_, Verify(fake_data_, fake_sig_)) |
| .InSequence(s1, s2) |
| .WillRepeatedly(Return(true)); |
| ExpectKeyPopulated(&s1, true); |
| ExpectVerifyAndSetPolicy(&s2); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), kAllKeyFlags, SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreUnsigned) { |
| InitPolicy(fake_data_, empty_blob_, empty_blob_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectSetPolicy(&s1); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), kAllKeyFlags, SignatureCheck::kDisabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreWrongSignature) { |
| InitPolicy(fake_data_, fake_sig_, empty_blob_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| EXPECT_CALL(key_, Verify(fake_data_, fake_sig_)) |
| .InSequence(s1, s2) |
| .WillRepeatedly(Return(false)); |
| |
| ExpectStoreFail(kAllKeyFlags, SignatureCheck::kEnabled, |
| dbus_error::kVerifyFail); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNoData) { |
| InitPolicy(empty_blob_, empty_blob_, empty_blob_, empty_blob_); |
| |
| ExpectStoreFail(kAllKeyFlags, SignatureCheck::kEnabled, |
| dbus_error::kSigDecodeFail); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNoSignature) { |
| InitPolicy(fake_data_, empty_blob_, empty_blob_, empty_blob_); |
| |
| EXPECT_CALL(key_, Verify(fake_data_, std::vector<uint8_t>())) |
| .WillOnce(Return(false)); |
| |
| ExpectStoreFail(kAllKeyFlags, SignatureCheck::kEnabled, |
| dbus_error::kVerifyFail); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNoKey) { |
| InitPolicy(fake_data_, fake_sig_, empty_blob_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, false); |
| EXPECT_CALL(key_, Verify(fake_data_, fake_sig_)) |
| .InSequence(s1, s2) |
| .WillRepeatedly(Return(false)); |
| |
| ExpectStoreFail(kAllKeyFlags, SignatureCheck::kEnabled, |
| dbus_error::kVerifyFail); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNewKey) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, false); |
| EXPECT_CALL(key_, PopulateFromBuffer(VectorEq(fake_key_))) |
| .InSequence(s1, s2) |
| .WillOnce(Return(true)); |
| ExpectKeyPopulated(&s1, true); |
| ExpectVerifyAndSetPolicy(&s2); |
| ExpectPersistKey(&s1); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), kAllKeyFlags, SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNewKeyClobber) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, false); |
| EXPECT_CALL(key_, ClobberCompromisedKey(VectorEq(fake_key_))) |
| .InSequence(s1, s2) |
| .WillOnce(Return(true)); |
| ExpectKeyPopulated(&s1, true); |
| ExpectVerifyAndSetPolicy(&s2); |
| ExpectPersistKey(&s1); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), PolicyService::KEY_CLOBBER, |
| SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNewKeySame) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, empty_blob_); |
| |
| Sequence s1, s2, s3; |
| EXPECT_CALL(key_, Equals(BlobToString(fake_key_))) |
| .InSequence(s1) |
| .WillRepeatedly(Return(true)); |
| ExpectKeyPopulated(&s2, true); |
| ExpectVerifyAndSetPolicy(&s3); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), kAllKeyFlags, SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreNewKeyNotAllowed) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, false); |
| |
| ExpectStoreFail(PolicyService::KEY_NONE, SignatureCheck::kEnabled, |
| dbus_error::kPubkeySetIllegal); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreRotation) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, fake_key_sig_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| EXPECT_CALL(key_, Rotate(VectorEq(fake_key_), VectorEq(fake_key_sig_))) |
| .InSequence(s1, s2) |
| .WillOnce(Return(true)); |
| ExpectKeyPopulated(&s1, true); |
| ExpectVerifyAndSetPolicy(&s2); |
| ExpectPersistKey(&s1); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), kAllKeyFlags, SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreRotationClobber) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, fake_key_sig_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, false); |
| EXPECT_CALL(key_, ClobberCompromisedKey(VectorEq(fake_key_))) |
| .InSequence(s1, s2) |
| .WillOnce(Return(true)); |
| ExpectKeyPopulated(&s1, true); |
| ExpectVerifyAndSetPolicy(&s2); |
| ExpectPersistKey(&s1); |
| ExpectPersistPolicy(&s2); |
| |
| EXPECT_TRUE(service_->Store( |
| SerializeAsBlob(policy_proto_), PolicyService::KEY_CLOBBER, |
| SignatureCheck::kEnabled, |
| MockPolicyService::CreateExpectSuccessCallback())); |
| |
| fake_loop_.Run(); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreRotationNoSignature) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, empty_blob_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| |
| ExpectStoreFail(PolicyService::KEY_ROTATE, SignatureCheck::kEnabled, |
| dbus_error::kPubkeySetIllegal); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreRotationBadSignature) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, fake_key_sig_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| EXPECT_CALL(key_, Rotate(VectorEq(fake_key_), VectorEq(fake_key_sig_))) |
| .InSequence(s1, s2) |
| .WillOnce(Return(false)); |
| |
| ExpectStoreFail(PolicyService::KEY_ROTATE, SignatureCheck::kEnabled, |
| dbus_error::kPubkeySetIllegal); |
| } |
| |
| TEST_F(PolicyServiceTest, StoreRotationNotAllowed) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, fake_key_sig_); |
| |
| Sequence s1, s2; |
| ExpectKeyEqualsFalse(&s1); |
| ExpectKeyPopulated(&s2, true); |
| |
| ExpectStoreFail(PolicyService::KEY_NONE, SignatureCheck::kEnabled, |
| dbus_error::kPubkeySetIllegal); |
| } |
| |
| TEST_F(PolicyServiceTest, Retrieve) { |
| InitPolicy(fake_data_, fake_sig_, fake_key_, fake_key_sig_); |
| |
| EXPECT_CALL(*store_, Get()).WillOnce(ReturnRef(policy_proto_)); |
| |
| std::vector<uint8_t> out_policy_blob; |
| EXPECT_TRUE(service_->Retrieve(&out_policy_blob)); |
| EXPECT_EQ(SerializeAsBlob(policy_proto_), out_policy_blob); |
| } |
| |
| TEST_F(PolicyServiceTest, PersistPolicySuccess) { |
| EXPECT_CALL(*store_, Persist()).WillOnce(Return(true)); |
| EXPECT_CALL(delegate_, OnPolicyPersisted(true)).Times(1); |
| service_->PersistPolicy(PolicyService::Completion()); |
| } |
| |
| TEST_F(PolicyServiceTest, PersistPolicyFailure) { |
| EXPECT_CALL(*store_, Persist()).WillOnce(Return(false)); |
| EXPECT_CALL(delegate_, OnPolicyPersisted(false)).Times(1); |
| service_->PersistPolicy(PolicyService::Completion()); |
| } |
| |
| } // namespace login_manager |