| // Copyright (c) 2012 The Chromium 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 <algorithm> |
| #include <map> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "absl/strings/string_view.h" |
| #include "quiche/quic/core/crypto/aes_128_gcm_12_encrypter.h" |
| #include "quiche/quic/core/crypto/crypto_framer.h" |
| #include "quiche/quic/core/crypto/crypto_handshake.h" |
| #include "quiche/quic/core/crypto/crypto_protocol.h" |
| #include "quiche/quic/core/crypto/crypto_utils.h" |
| #include "quiche/quic/core/crypto/quic_crypto_server_config.h" |
| #include "quiche/quic/core/crypto/quic_decrypter.h" |
| #include "quiche/quic/core/crypto/quic_encrypter.h" |
| #include "quiche/quic/core/crypto/quic_random.h" |
| #include "quiche/quic/core/quic_crypto_client_stream.h" |
| #include "quiche/quic/core/quic_crypto_server_stream_base.h" |
| #include "quiche/quic/core/quic_packets.h" |
| #include "quiche/quic/core/quic_session.h" |
| #include "quiche/quic/core/quic_utils.h" |
| #include "quiche/quic/core/quic_versions.h" |
| #include "quiche/quic/platform/api/quic_flags.h" |
| #include "quiche/quic/platform/api/quic_logging.h" |
| #include "quiche/quic/platform/api/quic_socket_address.h" |
| #include "quiche/quic/platform/api/quic_test.h" |
| #include "quiche/quic/test_tools/crypto_test_utils.h" |
| #include "quiche/quic/test_tools/failing_proof_source.h" |
| #include "quiche/quic/test_tools/fake_proof_source.h" |
| #include "quiche/quic/test_tools/quic_crypto_server_config_peer.h" |
| #include "quiche/quic/test_tools/quic_test_utils.h" |
| |
| namespace quic { |
| class QuicConnection; |
| class QuicStream; |
| } // namespace quic |
| |
| using testing::_; |
| using testing::NiceMock; |
| |
| namespace quic { |
| namespace test { |
| |
| namespace { |
| |
| const char kServerHostname[] = "test.example.com"; |
| const uint16_t kServerPort = 443; |
| |
| // This test tests the server-side of the QUIC crypto handshake. It does not |
| // test the TLS handshake - that is in tls_server_handshaker_test.cc. |
| class QuicCryptoServerStreamTest : public QuicTest { |
| public: |
| QuicCryptoServerStreamTest() |
| : QuicCryptoServerStreamTest(crypto_test_utils::ProofSourceForTesting()) { |
| } |
| |
| explicit QuicCryptoServerStreamTest(std::unique_ptr<ProofSource> proof_source) |
| : server_crypto_config_( |
| QuicCryptoServerConfig::TESTING, QuicRandom::GetInstance(), |
| std::move(proof_source), KeyExchangeSource::Default()), |
| server_compressed_certs_cache_( |
| QuicCompressedCertsCache::kQuicCompressedCertsCacheSize), |
| server_id_(kServerHostname, kServerPort), |
| client_crypto_config_(crypto_test_utils::ProofVerifierForTesting()) {} |
| |
| void Initialize() { InitializeServer(); } |
| |
| ~QuicCryptoServerStreamTest() override { |
| // Ensure that anything that might reference |helpers_| is destroyed before |
| // |helpers_| is destroyed. |
| server_session_.reset(); |
| client_session_.reset(); |
| helpers_.clear(); |
| alarm_factories_.clear(); |
| } |
| |
| // Initializes the crypto server stream state for testing. May be |
| // called multiple times. |
| void InitializeServer() { |
| TestQuicSpdyServerSession* server_session = nullptr; |
| helpers_.push_back(std::make_unique<NiceMock<MockQuicConnectionHelper>>()); |
| alarm_factories_.push_back(std::make_unique<MockAlarmFactory>()); |
| CreateServerSessionForTest( |
| server_id_, QuicTime::Delta::FromSeconds(100000), supported_versions_, |
| helpers_.back().get(), alarm_factories_.back().get(), |
| &server_crypto_config_, &server_compressed_certs_cache_, |
| &server_connection_, &server_session); |
| QUICHE_CHECK(server_session); |
| server_session_.reset(server_session); |
| EXPECT_CALL(*server_session_->helper(), CanAcceptClientHello(_, _, _, _, _)) |
| .Times(testing::AnyNumber()); |
| EXPECT_CALL(*server_session_, SelectAlpn(_)) |
| .WillRepeatedly([this](const std::vector<absl::string_view>& alpns) { |
| return std::find( |
| alpns.cbegin(), alpns.cend(), |
| AlpnForVersion(server_session_->connection()->version())); |
| }); |
| crypto_test_utils::SetupCryptoServerConfigForTest( |
| server_connection_->clock(), server_connection_->random_generator(), |
| &server_crypto_config_); |
| } |
| |
| QuicCryptoServerStreamBase* server_stream() { |
| return server_session_->GetMutableCryptoStream(); |
| } |
| |
| QuicCryptoClientStream* client_stream() { |
| return client_session_->GetMutableCryptoStream(); |
| } |
| |
| // Initializes a fake client, and all its associated state, for |
| // testing. May be called multiple times. |
| void InitializeFakeClient() { |
| TestQuicSpdyClientSession* client_session = nullptr; |
| helpers_.push_back(std::make_unique<NiceMock<MockQuicConnectionHelper>>()); |
| alarm_factories_.push_back(std::make_unique<MockAlarmFactory>()); |
| CreateClientSessionForTest( |
| server_id_, QuicTime::Delta::FromSeconds(100000), supported_versions_, |
| helpers_.back().get(), alarm_factories_.back().get(), |
| &client_crypto_config_, &client_connection_, &client_session); |
| QUICHE_CHECK(client_session); |
| client_session_.reset(client_session); |
| } |
| |
| int CompleteCryptoHandshake() { |
| QUICHE_CHECK(server_connection_); |
| QUICHE_CHECK(server_session_ != nullptr); |
| |
| return crypto_test_utils::HandshakeWithFakeClient( |
| helpers_.back().get(), alarm_factories_.back().get(), |
| server_connection_, server_stream(), server_id_, client_options_, |
| /*alpn=*/""); |
| } |
| |
| // Performs a single round of handshake message-exchange between the |
| // client and server. |
| void AdvanceHandshakeWithFakeClient() { |
| QUICHE_CHECK(server_connection_); |
| QUICHE_CHECK(client_session_ != nullptr); |
| |
| EXPECT_CALL(*client_session_, OnProofValid(_)).Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_session_, OnProofVerifyDetailsAvailable(_)) |
| .Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_connection_, OnCanWrite()).Times(testing::AnyNumber()); |
| EXPECT_CALL(*server_connection_, OnCanWrite()).Times(testing::AnyNumber()); |
| client_stream()->CryptoConnect(); |
| crypto_test_utils::AdvanceHandshake(client_connection_, client_stream(), 0, |
| server_connection_, server_stream(), 0); |
| } |
| |
| protected: |
| // Every connection gets its own MockQuicConnectionHelper and |
| // MockAlarmFactory, tracked separately from the server and client state so |
| // their lifetimes persist through the whole test. |
| std::vector<std::unique_ptr<MockQuicConnectionHelper>> helpers_; |
| std::vector<std::unique_ptr<MockAlarmFactory>> alarm_factories_; |
| |
| // Server state. |
| PacketSavingConnection* server_connection_; |
| std::unique_ptr<TestQuicSpdyServerSession> server_session_; |
| QuicCryptoServerConfig server_crypto_config_; |
| QuicCompressedCertsCache server_compressed_certs_cache_; |
| QuicServerId server_id_; |
| |
| // Client state. |
| PacketSavingConnection* client_connection_; |
| QuicCryptoClientConfig client_crypto_config_; |
| std::unique_ptr<TestQuicSpdyClientSession> client_session_; |
| |
| CryptoHandshakeMessage message_; |
| crypto_test_utils::FakeClientOptions client_options_; |
| |
| // Which QUIC versions the client and server support. |
| ParsedQuicVersionVector supported_versions_ = |
| AllSupportedVersionsWithQuicCrypto(); |
| }; |
| |
| TEST_F(QuicCryptoServerStreamTest, NotInitiallyConected) { |
| Initialize(); |
| EXPECT_FALSE(server_stream()->encryption_established()); |
| EXPECT_FALSE(server_stream()->one_rtt_keys_available()); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, ConnectedAfterCHLO) { |
| // CompleteCryptoHandshake returns the number of client hellos sent. This |
| // test should send: |
| // * One to get a source-address token and certificates. |
| // * One to complete the handshake. |
| Initialize(); |
| EXPECT_EQ(2, CompleteCryptoHandshake()); |
| EXPECT_TRUE(server_stream()->encryption_established()); |
| EXPECT_TRUE(server_stream()->one_rtt_keys_available()); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, ForwardSecureAfterCHLO) { |
| Initialize(); |
| InitializeFakeClient(); |
| |
| // Do a first handshake in order to prime the client config with the server's |
| // information. |
| AdvanceHandshakeWithFakeClient(); |
| EXPECT_FALSE(server_stream()->encryption_established()); |
| EXPECT_FALSE(server_stream()->one_rtt_keys_available()); |
| |
| // Now do another handshake, with the blocking SHLO connection option. |
| InitializeServer(); |
| InitializeFakeClient(); |
| |
| AdvanceHandshakeWithFakeClient(); |
| if (GetQuicReloadableFlag(quic_require_handshake_confirmation)) { |
| crypto_test_utils::AdvanceHandshake(client_connection_, client_stream(), 0, |
| server_connection_, server_stream(), 0); |
| } |
| EXPECT_TRUE(server_stream()->encryption_established()); |
| EXPECT_TRUE(server_stream()->one_rtt_keys_available()); |
| EXPECT_EQ(ENCRYPTION_FORWARD_SECURE, |
| server_session_->connection()->encryption_level()); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, ZeroRTT) { |
| Initialize(); |
| InitializeFakeClient(); |
| |
| // Do a first handshake in order to prime the client config with the server's |
| // information. |
| AdvanceHandshakeWithFakeClient(); |
| EXPECT_FALSE(server_stream()->ResumptionAttempted()); |
| |
| // Now do another handshake, hopefully in 0-RTT. |
| QUIC_LOG(INFO) << "Resetting for 0-RTT handshake attempt"; |
| InitializeFakeClient(); |
| InitializeServer(); |
| |
| EXPECT_CALL(*client_session_, OnProofValid(_)).Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_session_, OnProofVerifyDetailsAvailable(_)) |
| .Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_connection_, OnCanWrite()).Times(testing::AnyNumber()); |
| client_stream()->CryptoConnect(); |
| |
| EXPECT_CALL(*client_session_, OnProofValid(_)).Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_session_, OnProofVerifyDetailsAvailable(_)) |
| .Times(testing::AnyNumber()); |
| EXPECT_CALL(*client_connection_, OnCanWrite()).Times(testing::AnyNumber()); |
| crypto_test_utils::CommunicateHandshakeMessages( |
| client_connection_, client_stream(), server_connection_, server_stream()); |
| |
| EXPECT_EQ( |
| (GetQuicReloadableFlag(quic_require_handshake_confirmation) ? 2 : 1), |
| client_stream()->num_sent_client_hellos()); |
| EXPECT_TRUE(server_stream()->ResumptionAttempted()); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, FailByPolicy) { |
| Initialize(); |
| InitializeFakeClient(); |
| |
| EXPECT_CALL(*server_session_->helper(), CanAcceptClientHello(_, _, _, _, _)) |
| .WillOnce(testing::Return(false)); |
| EXPECT_CALL(*server_connection_, |
| CloseConnection(QUIC_HANDSHAKE_FAILED, _, _)); |
| |
| AdvanceHandshakeWithFakeClient(); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, MessageAfterHandshake) { |
| Initialize(); |
| CompleteCryptoHandshake(); |
| EXPECT_CALL( |
| *server_connection_, |
| CloseConnection(QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE, _, _)); |
| message_.set_tag(kCHLO); |
| crypto_test_utils::SendHandshakeMessageToStream(server_stream(), message_, |
| Perspective::IS_CLIENT); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, BadMessageType) { |
| Initialize(); |
| |
| message_.set_tag(kSHLO); |
| EXPECT_CALL(*server_connection_, |
| CloseConnection(QUIC_INVALID_CRYPTO_MESSAGE_TYPE, _, _)); |
| crypto_test_utils::SendHandshakeMessageToStream(server_stream(), message_, |
| Perspective::IS_SERVER); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, OnlySendSCUPAfterHandshakeComplete) { |
| // An attempt to send a SCUP before completing handshake should fail. |
| Initialize(); |
| |
| server_stream()->SendServerConfigUpdate(nullptr); |
| EXPECT_EQ(0, server_stream()->NumServerConfigUpdateMessagesSent()); |
| } |
| |
| TEST_F(QuicCryptoServerStreamTest, SendSCUPAfterHandshakeComplete) { |
| Initialize(); |
| |
| InitializeFakeClient(); |
| |
| // Do a first handshake in order to prime the client config with the server's |
| // information. |
| AdvanceHandshakeWithFakeClient(); |
| |
| // Now do another handshake, with the blocking SHLO connection option. |
| InitializeServer(); |
| InitializeFakeClient(); |
| AdvanceHandshakeWithFakeClient(); |
| if (GetQuicReloadableFlag(quic_require_handshake_confirmation)) { |
| crypto_test_utils::AdvanceHandshake(client_connection_, client_stream(), 0, |
| server_connection_, server_stream(), 0); |
| } |
| |
| // Send a SCUP message and ensure that the client was able to verify it. |
| EXPECT_CALL(*client_connection_, CloseConnection(_, _, _)).Times(0); |
| server_stream()->SendServerConfigUpdate(nullptr); |
| crypto_test_utils::AdvanceHandshake(client_connection_, client_stream(), 1, |
| server_connection_, server_stream(), 1); |
| |
| EXPECT_EQ(1, server_stream()->NumServerConfigUpdateMessagesSent()); |
| EXPECT_EQ(1, client_stream()->num_scup_messages_received()); |
| } |
| |
| class QuicCryptoServerStreamTestWithFailingProofSource |
| : public QuicCryptoServerStreamTest { |
| public: |
| QuicCryptoServerStreamTestWithFailingProofSource() |
| : QuicCryptoServerStreamTest( |
| std::unique_ptr<FailingProofSource>(new FailingProofSource)) {} |
| }; |
| |
| TEST_F(QuicCryptoServerStreamTestWithFailingProofSource, Test) { |
| Initialize(); |
| InitializeFakeClient(); |
| |
| EXPECT_CALL(*server_session_->helper(), CanAcceptClientHello(_, _, _, _, _)) |
| .WillOnce(testing::Return(true)); |
| EXPECT_CALL(*server_connection_, |
| CloseConnection(QUIC_HANDSHAKE_FAILED, "Failed to get proof", _)); |
| // Regression test for b/31521252, in which a crash would happen here. |
| AdvanceHandshakeWithFakeClient(); |
| EXPECT_FALSE(server_stream()->encryption_established()); |
| EXPECT_FALSE(server_stream()->one_rtt_keys_available()); |
| } |
| |
| class QuicCryptoServerStreamTestWithFakeProofSource |
| : public QuicCryptoServerStreamTest { |
| public: |
| QuicCryptoServerStreamTestWithFakeProofSource() |
| : QuicCryptoServerStreamTest( |
| std::unique_ptr<FakeProofSource>(new FakeProofSource)), |
| crypto_config_peer_(&server_crypto_config_) {} |
| |
| FakeProofSource* GetFakeProofSource() const { |
| return static_cast<FakeProofSource*>(crypto_config_peer_.GetProofSource()); |
| } |
| |
| protected: |
| QuicCryptoServerConfigPeer crypto_config_peer_; |
| }; |
| |
| // Regression test for b/35422225, in which multiple CHLOs arriving on the same |
| // connection in close succession could cause a crash. |
| TEST_F(QuicCryptoServerStreamTestWithFakeProofSource, MultipleChlo) { |
| Initialize(); |
| GetFakeProofSource()->Activate(); |
| EXPECT_CALL(*server_session_->helper(), CanAcceptClientHello(_, _, _, _, _)) |
| .WillOnce(testing::Return(true)); |
| |
| // The methods below use a PROTOCOL_QUIC_CRYPTO version so we pick the |
| // first one from the list of supported versions. |
| QuicTransportVersion transport_version = QUIC_VERSION_UNSUPPORTED; |
| for (const ParsedQuicVersion& version : AllSupportedVersions()) { |
| if (version.handshake_protocol == PROTOCOL_QUIC_CRYPTO) { |
| transport_version = version.transport_version; |
| break; |
| } |
| } |
| ASSERT_NE(QUIC_VERSION_UNSUPPORTED, transport_version); |
| |
| // Create a minimal CHLO |
| MockClock clock; |
| CryptoHandshakeMessage chlo = crypto_test_utils::GenerateDefaultInchoateCHLO( |
| &clock, transport_version, &server_crypto_config_); |
| |
| // Send in the CHLO, and check that a callback is now pending in the |
| // ProofSource. |
| crypto_test_utils::SendHandshakeMessageToStream(server_stream(), chlo, |
| Perspective::IS_CLIENT); |
| EXPECT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Send in a second CHLO while processing of the first is still pending. |
| // Verify that the server closes the connection rather than crashing. Note |
| // that the crash is a use-after-free, so it may only show up consistently in |
| // ASAN tests. |
| EXPECT_CALL( |
| *server_connection_, |
| CloseConnection(QUIC_CRYPTO_MESSAGE_WHILE_VALIDATING_CLIENT_HELLO, |
| "Unexpected handshake message while processing CHLO", _)); |
| crypto_test_utils::SendHandshakeMessageToStream(server_stream(), chlo, |
| Perspective::IS_CLIENT); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace quic |