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// Copyright (c) 2013 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/quic/core/quic_utils.h"
#include "net/third_party/quic/core/crypto/crypto_protocol.h"
#include "net/third_party/quic/core/quic_connection_id.h"
#include "net/third_party/quic/platform/api/quic_arraysize.h"
#include "net/third_party/quic/platform/api/quic_string.h"
#include "net/third_party/quic/platform/api/quic_test.h"
#include "net/third_party/quic/test_tools/quic_test_utils.h"
namespace quic {
namespace test {
namespace {
class QuicUtilsTest : public QuicTest {};
TEST_F(QuicUtilsTest, DetermineAddressChangeType) {
const QuicString kIPv4String1 = "1.2.3.4";
const QuicString kIPv4String2 = "1.2.3.5";
const QuicString kIPv4String3 = "1.1.3.5";
const QuicString kIPv6String1 = "2001:700:300:1800::f";
const QuicString kIPv6String2 = "2001:700:300:1800:1:1:1:f";
QuicSocketAddress old_address;
QuicSocketAddress new_address;
QuicIpAddress address;
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
new_address = QuicSocketAddress(address, 5678);
EXPECT_EQ(PORT_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv6String1));
old_address = QuicSocketAddress(address, 1234);
new_address = QuicSocketAddress(address, 5678);
EXPECT_EQ(PORT_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv6String1));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_TO_IPV6_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv4String1));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV6_TO_IPV4_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv6String2));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV6_TO_IPV6_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv4String2));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_SUBNET_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String3));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_TO_IPV4_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
}
QuicUint128 IncrementalHashReference(const void* data, size_t len) {
// The two constants are defined as part of the hash algorithm.
// see http://www.isthe.com/chongo/tech/comp/fnv/
// hash = 144066263297769815596495629667062367629
QuicUint128 hash = MakeQuicUint128(UINT64_C(7809847782465536322),
UINT64_C(7113472399480571277));
// kPrime = 309485009821345068724781371
const QuicUint128 kPrime = MakeQuicUint128(16777216, 315);
const uint8_t* octets = reinterpret_cast<const uint8_t*>(data);
for (size_t i = 0; i < len; ++i) {
hash = hash ^ MakeQuicUint128(0, octets[i]);
hash = hash * kPrime;
}
return hash;
}
TEST_F(QuicUtilsTest, ReferenceTest) {
std::vector<uint8_t> data(32);
for (size_t i = 0; i < data.size(); ++i) {
data[i] = i % 255;
}
EXPECT_EQ(IncrementalHashReference(data.data(), data.size()),
QuicUtils::FNV1a_128_Hash(QuicStringPiece(
reinterpret_cast<const char*>(data.data()), data.size())));
}
TEST_F(QuicUtilsTest, IsUnackable) {
for (size_t i = FIRST_PACKET_STATE; i <= LAST_PACKET_STATE; ++i) {
if (i == NEVER_SENT || i == ACKED || i == UNACKABLE) {
EXPECT_FALSE(QuicUtils::IsAckable(static_cast<SentPacketState>(i)));
} else {
EXPECT_TRUE(QuicUtils::IsAckable(static_cast<SentPacketState>(i)));
}
}
}
TEST_F(QuicUtilsTest, RetransmissionTypeToPacketState) {
for (size_t i = FIRST_TRANSMISSION_TYPE; i <= LAST_TRANSMISSION_TYPE; ++i) {
if (i == NOT_RETRANSMISSION) {
continue;
}
SentPacketState state = QuicUtils::RetransmissionTypeToPacketState(
static_cast<TransmissionType>(i));
if (i == HANDSHAKE_RETRANSMISSION) {
EXPECT_EQ(HANDSHAKE_RETRANSMITTED, state);
} else if (i == LOSS_RETRANSMISSION) {
EXPECT_EQ(LOST, state);
} else if (i == ALL_UNACKED_RETRANSMISSION ||
i == ALL_INITIAL_RETRANSMISSION) {
EXPECT_EQ(UNACKABLE, state);
} else if (i == TLP_RETRANSMISSION) {
EXPECT_EQ(TLP_RETRANSMITTED, state);
} else if (i == RTO_RETRANSMISSION) {
EXPECT_EQ(RTO_RETRANSMITTED, state);
} else if (i == PROBING_RETRANSMISSION) {
EXPECT_EQ(PROBE_RETRANSMITTED, state);
} else {
DCHECK(false)
<< "No corresponding packet state according to transmission type: "
<< i;
}
}
}
TEST_F(QuicUtilsTest, IsIetfPacketHeader) {
// IETF QUIC short header
uint8_t first_byte = 0;
EXPECT_TRUE(QuicUtils::IsIetfPacketHeader(first_byte));
EXPECT_TRUE(QuicUtils::IsIetfPacketShortHeader(first_byte));
// IETF QUIC long header
first_byte |= (FLAGS_LONG_HEADER | FLAGS_DEMULTIPLEXING_BIT);
EXPECT_TRUE(QuicUtils::IsIetfPacketHeader(first_byte));
EXPECT_FALSE(QuicUtils::IsIetfPacketShortHeader(first_byte));
// IETF QUIC long header, version negotiation.
first_byte = 0;
first_byte |= FLAGS_LONG_HEADER;
EXPECT_TRUE(QuicUtils::IsIetfPacketHeader(first_byte));
EXPECT_FALSE(QuicUtils::IsIetfPacketShortHeader(first_byte));
// GQUIC
first_byte = 0;
first_byte |= PACKET_PUBLIC_FLAGS_8BYTE_CONNECTION_ID;
EXPECT_FALSE(QuicUtils::IsIetfPacketHeader(first_byte));
EXPECT_FALSE(QuicUtils::IsIetfPacketShortHeader(first_byte));
}
TEST_F(QuicUtilsTest, RandomConnectionId) {
MockRandom random(33);
QuicConnectionId connection_id = QuicUtils::CreateRandomConnectionId(&random);
EXPECT_EQ(connection_id.length(), sizeof(uint64_t));
char connection_id_bytes[sizeof(uint64_t)];
random.RandBytes(connection_id_bytes, QUIC_ARRAYSIZE(connection_id_bytes));
EXPECT_EQ(connection_id,
QuicConnectionId(static_cast<char*>(connection_id_bytes),
QUIC_ARRAYSIZE(connection_id_bytes)));
EXPECT_NE(connection_id, EmptyQuicConnectionId());
EXPECT_NE(connection_id, TestConnectionId());
EXPECT_NE(connection_id, TestConnectionId(1));
}
TEST_F(QuicUtilsTest, VariableLengthConnectionId) {
EXPECT_FALSE(
QuicUtils::VariableLengthConnectionIdAllowedForVersion(QUIC_VERSION_39));
EXPECT_TRUE(QuicUtils::IsConnectionIdValidForVersion(
QuicUtils::CreateZeroConnectionId(QUIC_VERSION_39), QUIC_VERSION_39));
EXPECT_TRUE(QuicUtils::IsConnectionIdValidForVersion(
QuicUtils::CreateZeroConnectionId(QUIC_VERSION_99), QUIC_VERSION_99));
EXPECT_NE(QuicUtils::CreateZeroConnectionId(QUIC_VERSION_39),
EmptyQuicConnectionId());
EXPECT_FALSE(QuicUtils::IsConnectionIdValidForVersion(EmptyQuicConnectionId(),
QUIC_VERSION_39));
}
TEST_F(QuicUtilsTest, StatelessResetToken) {
QuicConnectionId connection_id1a = test::TestConnectionId(1);
QuicConnectionId connection_id1b = test::TestConnectionId(1);
QuicConnectionId connection_id2 = test::TestConnectionId(2);
QuicUint128 token1a = QuicUtils::GenerateStatelessResetToken(connection_id1a);
QuicUint128 token1b = QuicUtils::GenerateStatelessResetToken(connection_id1b);
QuicUint128 token2 = QuicUtils::GenerateStatelessResetToken(connection_id2);
EXPECT_EQ(token1a, token1b);
EXPECT_NE(token1a, token2);
EXPECT_EQ(token1a, MakeQuicUint128(0, 1));
}
} // namespace
} // namespace test
} // namespace quic