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// 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 "net/third_party/quiche/src/quic/core/quic_crypto_client_stream.h"
#include <memory>
#include <string>
#include "net/third_party/quiche/src/quic/core/crypto/aes_128_gcm_12_encrypter.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_decrypter.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_encrypter.h"
#include "net/third_party/quiche/src/quic/core/quic_packets.h"
#include "net/third_party/quiche/src/quic/core/quic_server_id.h"
#include "net/third_party/quiche/src/quic/core/quic_utils.h"
#include "net/third_party/quiche/src/quic/core/tls_client_handshaker.h"
#include "net/third_party/quiche/src/quic/core/tls_server_handshaker.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
#include "net/third_party/quiche/src/quic/test_tools/crypto_test_utils.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_stream_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_stream_sequencer_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h"
#include "net/third_party/quiche/src/quic/test_tools/simple_quic_framer.h"
using testing::_;
namespace quic {
namespace test {
namespace {
const char kServerHostname[] = "test.example.com";
const uint16_t kServerPort = 443;
class QuicCryptoClientStreamTest : public QuicTest {
public:
QuicCryptoClientStreamTest()
: supported_versions_(AllSupportedVersions()),
server_id_(kServerHostname, kServerPort, false),
crypto_config_(crypto_test_utils::ProofVerifierForTesting(),
TlsClientHandshaker::CreateSslCtx()) {
CreateConnection();
}
void CreateConnection() {
connection_ =
new PacketSavingConnection(&client_helper_, &alarm_factory_,
Perspective::IS_CLIENT, supported_versions_);
// Advance the time, because timers do not like uninitialized times.
connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
session_ = QuicMakeUnique<TestQuicSpdyClientSession>(
connection_, DefaultQuicConfig(), supported_versions_, server_id_,
&crypto_config_);
}
void CompleteCryptoHandshake() {
if (stream()->handshake_protocol() != PROTOCOL_TLS1_3) {
EXPECT_CALL(*session_, OnProofValid(testing::_));
}
EXPECT_CALL(*session_, OnProofVerifyDetailsAvailable(testing::_))
.Times(testing::AnyNumber());
stream()->CryptoConnect();
QuicConfig config;
crypto_test_utils::HandshakeWithFakeServer(
&config, &server_helper_, &alarm_factory_, connection_, stream());
}
QuicCryptoClientStream* stream() {
return session_->GetMutableCryptoStream();
}
MockQuicConnectionHelper server_helper_;
MockQuicConnectionHelper client_helper_;
MockAlarmFactory alarm_factory_;
PacketSavingConnection* connection_;
ParsedQuicVersionVector supported_versions_;
std::unique_ptr<TestQuicSpdyClientSession> session_;
QuicServerId server_id_;
CryptoHandshakeMessage message_;
QuicCryptoClientConfig crypto_config_;
};
TEST_F(QuicCryptoClientStreamTest, NotInitiallyConected) {
EXPECT_FALSE(stream()->encryption_established());
EXPECT_FALSE(stream()->handshake_confirmed());
}
TEST_F(QuicCryptoClientStreamTest, ConnectedAfterSHLO) {
CompleteCryptoHandshake();
EXPECT_TRUE(stream()->encryption_established());
EXPECT_TRUE(stream()->handshake_confirmed());
}
TEST_F(QuicCryptoClientStreamTest, ConnectedAfterTlsHandshake) {
SetQuicFlag(FLAGS_quic_supports_tls_handshake, true);
supported_versions_.clear();
for (QuicTransportVersion transport_version :
AllSupportedTransportVersions()) {
supported_versions_.push_back(
ParsedQuicVersion(PROTOCOL_TLS1_3, transport_version));
}
CreateConnection();
CompleteCryptoHandshake();
EXPECT_EQ(PROTOCOL_TLS1_3, stream()->handshake_protocol());
EXPECT_TRUE(stream()->encryption_established());
EXPECT_TRUE(stream()->handshake_confirmed());
}
TEST_F(QuicCryptoClientStreamTest, MessageAfterHandshake) {
CompleteCryptoHandshake();
EXPECT_CALL(
*connection_,
CloseConnection(QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE, _, _));
message_.set_tag(kCHLO);
crypto_test_utils::SendHandshakeMessageToStream(stream(), message_,
Perspective::IS_CLIENT);
}
TEST_F(QuicCryptoClientStreamTest, BadMessageType) {
stream()->CryptoConnect();
message_.set_tag(kCHLO);
EXPECT_CALL(*connection_, CloseConnection(QUIC_INVALID_CRYPTO_MESSAGE_TYPE,
"Expected REJ", _));
crypto_test_utils::SendHandshakeMessageToStream(stream(), message_,
Perspective::IS_CLIENT);
}
TEST_F(QuicCryptoClientStreamTest, NegotiatedParameters) {
CompleteCryptoHandshake();
const QuicConfig* config = session_->config();
EXPECT_EQ(kMaximumIdleTimeoutSecs, config->IdleNetworkTimeout().ToSeconds());
const QuicCryptoNegotiatedParameters& crypto_params(
stream()->crypto_negotiated_params());
EXPECT_EQ(crypto_config_.aead[0], crypto_params.aead);
EXPECT_EQ(crypto_config_.kexs[0], crypto_params.key_exchange);
}
TEST_F(QuicCryptoClientStreamTest, ExpiredServerConfig) {
// Seed the config with a cached server config.
CompleteCryptoHandshake();
// Recreate connection with the new config.
CreateConnection();
// Advance time 5 years to ensure that we pass the expiry time of the cached
// server config.
connection_->AdvanceTime(
QuicTime::Delta::FromSeconds(60 * 60 * 24 * 365 * 5));
EXPECT_CALL(*session_, OnProofValid(testing::_));
stream()->CryptoConnect();
// Check that a client hello was sent.
ASSERT_EQ(1u, connection_->encrypted_packets_.size());
EXPECT_EQ(ENCRYPTION_INITIAL, connection_->encryption_level());
}
TEST_F(QuicCryptoClientStreamTest, ClockSkew) {
// Test that if the client's clock is skewed with respect to the server,
// the handshake succeeds. In the past, the client would get the server
// config, notice that it had already expired and then close the connection.
// Advance time 5 years to ensure that we pass the expiry time in the server
// config, but the TTL is used instead.
connection_->AdvanceTime(
QuicTime::Delta::FromSeconds(60 * 60 * 24 * 365 * 5));
// The handshakes completes!
CompleteCryptoHandshake();
}
TEST_F(QuicCryptoClientStreamTest, InvalidCachedServerConfig) {
// Seed the config with a cached server config.
CompleteCryptoHandshake();
// Recreate connection with the new config.
CreateConnection();
QuicCryptoClientConfig::CachedState* state =
crypto_config_.LookupOrCreate(server_id_);
std::vector<std::string> certs = state->certs();
std::string cert_sct = state->cert_sct();
std::string signature = state->signature();
std::string chlo_hash = state->chlo_hash();
state->SetProof(certs, cert_sct, chlo_hash, signature + signature);
EXPECT_CALL(*session_, OnProofVerifyDetailsAvailable(testing::_))
.Times(testing::AnyNumber());
stream()->CryptoConnect();
// Check that a client hello was sent.
ASSERT_EQ(1u, connection_->encrypted_packets_.size());
}
TEST_F(QuicCryptoClientStreamTest, ServerConfigUpdate) {
// Test that the crypto client stream can receive server config updates after
// the connection has been established.
CompleteCryptoHandshake();
QuicCryptoClientConfig::CachedState* state =
crypto_config_.LookupOrCreate(server_id_);
// Ensure cached STK is different to what we send in the handshake.
EXPECT_NE("xstk", state->source_address_token());
// Initialize using {...} syntax to avoid trailing \0 if converting from
// string.
unsigned char stk[] = {'x', 's', 't', 'k'};
// Minimum SCFG that passes config validation checks.
unsigned char scfg[] = {// SCFG
0x53, 0x43, 0x46, 0x47,
// num entries
0x01, 0x00,
// padding
0x00, 0x00,
// EXPY
0x45, 0x58, 0x50, 0x59,
// EXPY end offset
0x08, 0x00, 0x00, 0x00,
// Value
'1', '2', '3', '4', '5', '6', '7', '8'};
CryptoHandshakeMessage server_config_update;
server_config_update.set_tag(kSCUP);
server_config_update.SetValue(kSourceAddressTokenTag, stk);
server_config_update.SetValue(kSCFG, scfg);
const uint64_t expiry_seconds = 60 * 60 * 24 * 2;
server_config_update.SetValue(kSTTL, expiry_seconds);
crypto_test_utils::SendHandshakeMessageToStream(
stream(), server_config_update, Perspective::IS_SERVER);
// Make sure that the STK and SCFG are cached correctly.
EXPECT_EQ("xstk", state->source_address_token());
const std::string& cached_scfg = state->server_config();
test::CompareCharArraysWithHexError(
"scfg", cached_scfg.data(), cached_scfg.length(),
reinterpret_cast<char*>(scfg), QUIC_ARRAYSIZE(scfg));
QuicStreamSequencer* sequencer = QuicStreamPeer::sequencer(stream());
EXPECT_FALSE(QuicStreamSequencerPeer::IsUnderlyingBufferAllocated(sequencer));
}
TEST_F(QuicCryptoClientStreamTest, ServerConfigUpdateWithCert) {
// Test that the crypto client stream can receive and use server config
// updates with certificates after the connection has been established.
CompleteCryptoHandshake();
// Build a server config update message with certificates
QuicCryptoServerConfig crypto_config(
QuicCryptoServerConfig::TESTING, QuicRandom::GetInstance(),
crypto_test_utils::ProofSourceForTesting(), KeyExchangeSource::Default(),
TlsServerHandshaker::CreateSslCtx());
crypto_test_utils::SetupCryptoServerConfigForTest(
connection_->clock(), QuicRandom::GetInstance(), &crypto_config);
SourceAddressTokens tokens;
QuicCompressedCertsCache cache(1);
CachedNetworkParameters network_params;
CryptoHandshakeMessage server_config_update;
class Callback : public BuildServerConfigUpdateMessageResultCallback {
public:
Callback(bool* ok, CryptoHandshakeMessage* message)
: ok_(ok), message_(message) {}
void Run(bool ok, const CryptoHandshakeMessage& message) override {
*ok_ = ok;
*message_ = message;
}
private:
bool* ok_;
CryptoHandshakeMessage* message_;
};
// Note: relies on the callback being invoked synchronously
bool ok = false;
crypto_config.BuildServerConfigUpdateMessage(
session_->connection()->transport_version(), stream()->chlo_hash(),
tokens, QuicSocketAddress(QuicIpAddress::Loopback6(), 1234),
QuicIpAddress::Loopback6(), connection_->clock(),
QuicRandom::GetInstance(), &cache, stream()->crypto_negotiated_params(),
&network_params,
std::unique_ptr<BuildServerConfigUpdateMessageResultCallback>(
new Callback(&ok, &server_config_update)));
EXPECT_TRUE(ok);
EXPECT_CALL(*session_, OnProofValid(testing::_));
crypto_test_utils::SendHandshakeMessageToStream(
stream(), server_config_update, Perspective::IS_SERVER);
// Recreate connection with the new config and verify a 0-RTT attempt.
CreateConnection();
EXPECT_CALL(*connection_, OnCanWrite());
EXPECT_CALL(*session_, OnProofValid(testing::_));
EXPECT_CALL(*session_, OnProofVerifyDetailsAvailable(testing::_))
.Times(testing::AnyNumber());
stream()->CryptoConnect();
EXPECT_TRUE(session_->IsEncryptionEstablished());
}
TEST_F(QuicCryptoClientStreamTest, ServerConfigUpdateBeforeHandshake) {
EXPECT_CALL(
*connection_,
CloseConnection(QUIC_CRYPTO_UPDATE_BEFORE_HANDSHAKE_COMPLETE, _, _));
CryptoHandshakeMessage server_config_update;
server_config_update.set_tag(kSCUP);
crypto_test_utils::SendHandshakeMessageToStream(
stream(), server_config_update, Perspective::IS_SERVER);
}
TEST_F(QuicCryptoClientStreamTest, PreferredVersion) {
// This mimics the case where client receives version negotiation packet, such
// that, the preferred version is different from the packets' version.
connection_ = new PacketSavingConnection(
&client_helper_, &alarm_factory_, Perspective::IS_CLIENT,
ParsedVersionOfIndex(supported_versions_, 1));
connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
session_ = QuicMakeUnique<TestQuicSpdyClientSession>(
connection_, DefaultQuicConfig(), supported_versions_, server_id_,
&crypto_config_);
CompleteCryptoHandshake();
// 2 CHLOs are sent.
ASSERT_EQ(2u, session_->sent_crypto_handshake_messages().size());
// Verify preferred version is the highest version that session supports, and
// is different from connection's version.
QuicVersionLabel client_version_label;
EXPECT_EQ(QUIC_NO_ERROR,
session_->sent_crypto_handshake_messages()[0].GetVersionLabel(
kVER, &client_version_label));
EXPECT_EQ(CreateQuicVersionLabel(supported_versions_[0]),
client_version_label);
EXPECT_EQ(QUIC_NO_ERROR,
session_->sent_crypto_handshake_messages()[1].GetVersionLabel(
kVER, &client_version_label));
EXPECT_EQ(CreateQuicVersionLabel(supported_versions_[0]),
client_version_label);
EXPECT_NE(CreateQuicVersionLabel(connection_->version()),
client_version_label);
}
} // namespace
} // namespace test
} // namespace quic