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// Copyright (c) 2016 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/tools/quic/chlo_extractor.h"
#include "net/quic/core/quic_framer.h"
#include "net/quic/test_tools/crypto_test_utils.h"
#include "net/quic/test_tools/quic_test_utils.h"
using base::StringPiece;
using std::string;
using testing::Return;
using testing::_;
namespace net {
namespace test {
namespace {
class TestDelegate : public ChloExtractor::Delegate {
public:
TestDelegate() {}
~TestDelegate() override {}
// ChloExtractor::Delegate implementation
void OnChlo(QuicVersion version,
QuicConnectionId connection_id,
const CryptoHandshakeMessage& chlo) override {
version_ = version;
connection_id_ = connection_id;
chlo_ = chlo.DebugString();
}
QuicConnectionId connection_id() const { return connection_id_; }
QuicVersion version() const { return version_; }
const string& chlo() const { return chlo_; }
private:
QuicConnectionId connection_id_;
QuicVersion version_;
string chlo_;
};
class ChloExtractorTest : public ::testing::Test {
public:
ChloExtractorTest() {
header_.public_header.connection_id = 42;
header_.public_header.connection_id_length = PACKET_8BYTE_CONNECTION_ID;
header_.public_header.version_flag = true;
header_.public_header.versions =
SupportedVersions(AllSupportedVersions().front());
header_.public_header.reset_flag = false;
header_.public_header.packet_number_length = PACKET_6BYTE_PACKET_NUMBER;
header_.packet_number = 1;
}
void MakePacket(QuicStreamFrame* stream_frame) {
QuicFrame frame(stream_frame);
QuicFrames frames;
frames.push_back(frame);
QuicFramer framer(SupportedVersions(header_.public_header.versions.front()),
QuicTime::Zero(), Perspective::IS_CLIENT);
std::unique_ptr<QuicPacket> packet(
BuildUnsizedDataPacket(&framer, header_, frames));
EXPECT_TRUE(packet != nullptr);
size_t encrypted_length = framer.EncryptPayload(
ENCRYPTION_NONE, header_.path_id, header_.packet_number, *packet,
buffer_, arraysize(buffer_));
ASSERT_NE(0u, encrypted_length);
packet_.reset(new QuicEncryptedPacket(buffer_, encrypted_length));
EXPECT_TRUE(packet_ != nullptr);
delete stream_frame;
}
protected:
TestDelegate delegate_;
QuicPacketHeader header_;
std::unique_ptr<QuicEncryptedPacket> packet_;
char buffer_[kMaxPacketSize];
};
TEST_F(ChloExtractorTest, FindsValidChlo) {
CryptoHandshakeMessage client_hello;
client_hello.set_tag(kCHLO);
string client_hello_str(
client_hello.GetSerialized().AsStringPiece().as_string());
// Construct a CHLO with each supported version
for (QuicVersion version : AllSupportedVersions()) {
QuicVersionVector versions(SupportedVersions(version));
header_.public_header.versions = versions;
MakePacket(
new QuicStreamFrame(kCryptoStreamId, false, 0, client_hello_str));
EXPECT_TRUE(ChloExtractor::Extract(*packet_, versions, &delegate_))
<< QuicVersionToString(version);
EXPECT_EQ(version, delegate_.version());
EXPECT_EQ(header_.public_header.connection_id, delegate_.connection_id());
EXPECT_EQ(client_hello.DebugString(), delegate_.chlo())
<< QuicVersionToString(version);
}
}
TEST_F(ChloExtractorTest, DoesNotFindValidChloOnWrongStream) {
CryptoHandshakeMessage client_hello;
client_hello.set_tag(kCHLO);
string client_hello_str(
client_hello.GetSerialized().AsStringPiece().as_string());
MakePacket(
new QuicStreamFrame(kCryptoStreamId + 1, false, 0, client_hello_str));
EXPECT_FALSE(
ChloExtractor::Extract(*packet_, AllSupportedVersions(), &delegate_));
}
TEST_F(ChloExtractorTest, DoesNotFindValidChloOnWrongOffset) {
CryptoHandshakeMessage client_hello;
client_hello.set_tag(kCHLO);
string client_hello_str(
client_hello.GetSerialized().AsStringPiece().as_string());
MakePacket(new QuicStreamFrame(kCryptoStreamId, false, 1, client_hello_str));
EXPECT_FALSE(
ChloExtractor::Extract(*packet_, AllSupportedVersions(), &delegate_));
}
TEST_F(ChloExtractorTest, DoesNotFindInvalidChlo) {
MakePacket(new QuicStreamFrame(kCryptoStreamId, false, 0, "foo"));
EXPECT_FALSE(
ChloExtractor::Extract(*packet_, AllSupportedVersions(), &delegate_));
}
} // namespace
} // namespace test
} // namespace net
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