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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/fuchsia/network_interface_cache.h"
#include <fuchsia/net/interfaces/cpp/fidl.h>
#include <fuchsia/net/interfaces/cpp/fidl_test_base.h>
#include <optional>
#include <utility>
#include <vector>
#include "net/base/network_change_notifier.h"
#include "net/base/network_interfaces.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net::internal {
namespace {
enum : InterfaceProperties::InterfaceId {
kDefaultInterfaceId = 1,
kSecondaryInterfaceId = 2
};
using IPv4Octets = std::array<uint8_t, 4>;
constexpr IPv4Octets kDefaultIPv4Address = {192, 168, 0, 2};
constexpr uint8_t kDefaultIPv4Prefix = 16;
constexpr const char kDefaultInterfaceName[] = "net1";
fuchsia::net::IpAddress IpAddressFrom(IPv4Octets octets) {
fuchsia::net::IpAddress output;
output.ipv4().addr = octets;
return output;
}
template <typename T>
fuchsia::net::Subnet SubnetFrom(T octets, uint8_t prefix) {
fuchsia::net::Subnet output;
output.addr = IpAddressFrom(octets);
output.prefix_len = prefix;
return output;
}
template <typename T>
fuchsia::net::interfaces::Address InterfaceAddressFrom(T octets,
uint8_t prefix) {
fuchsia::net::interfaces::Address addr;
addr.set_addr(SubnetFrom(octets, prefix));
return addr;
}
template <typename T>
std::vector<T> MakeSingleItemVec(T item) {
std::vector<T> vec;
vec.push_back(std::move(item));
return vec;
}
fuchsia::net::interfaces::Properties DefaultInterfaceProperties(
fuchsia::hardware::network::PortClass device_class =
fuchsia::hardware::network::PortClass::ETHERNET) {
// For most tests a live interface with an IPv4 address and ethernet class is
// sufficient.
fuchsia::net::interfaces::Properties properties;
properties.set_id(kDefaultInterfaceId);
properties.set_name(kDefaultInterfaceName);
properties.set_online(true);
properties.set_has_default_ipv4_route(true);
properties.set_has_default_ipv6_route(false);
properties.set_port_class(fuchsia::net::interfaces::PortClass::WithDevice(
std::move(device_class)));
properties.set_addresses(MakeSingleItemVec(
InterfaceAddressFrom(kDefaultIPv4Address, kDefaultIPv4Prefix)));
return properties;
}
} // namespace
class NetworkInterfaceCacheTest : public testing::Test {};
TEST_F(NetworkInterfaceCacheTest, AddInterface) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
std::optional<NetworkInterfaceCache::ChangeBits> network_changes =
cache.AddInterface(DefaultInterfaceProperties());
ASSERT_TRUE(network_changes.has_value());
EXPECT_EQ(network_changes.value(),
NetworkInterfaceCache::kIpAddressChanged |
NetworkInterfaceCache::kConnectionTypeChanged);
NetworkInterfaceList networks;
EXPECT_TRUE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 1u);
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_ETHERNET);
}
TEST_F(NetworkInterfaceCacheTest, RemoveInterface) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
cache.AddInterface(DefaultInterfaceProperties());
std::optional<NetworkInterfaceCache::ChangeBits> network_changes =
cache.RemoveInterface(kDefaultInterfaceId);
ASSERT_TRUE(network_changes.has_value());
EXPECT_EQ(network_changes.value(),
NetworkInterfaceCache::kIpAddressChanged |
NetworkInterfaceCache::kConnectionTypeChanged);
NetworkInterfaceList networks;
EXPECT_TRUE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 0u);
EXPECT_EQ(cache.GetConnectionType(), NetworkChangeNotifier::CONNECTION_NONE);
}
TEST_F(NetworkInterfaceCacheTest, ChangeInterface) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
cache.AddInterface(DefaultInterfaceProperties());
fuchsia::net::interfaces::Properties properties;
properties.set_id(kDefaultInterfaceId);
properties.set_port_class(
fuchsia::net::interfaces::PortClass::WithLoopback(
fuchsia::net::interfaces::Empty()));
properties.set_addresses({});
std::optional<NetworkInterfaceCache::ChangeBits> network_changes =
cache.ChangeInterface(std::move(properties));
ASSERT_TRUE(network_changes.has_value());
EXPECT_EQ(network_changes.value(),
NetworkInterfaceCache::kIpAddressChanged |
NetworkInterfaceCache::kConnectionTypeChanged);
NetworkInterfaceList networks;
EXPECT_TRUE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 0u);
EXPECT_EQ(cache.GetConnectionType(), NetworkChangeNotifier::CONNECTION_NONE);
}
TEST_F(NetworkInterfaceCacheTest, MalformedInterfaceUpdatesSetErrorState) {
// Adding format error interface in empty cache triggers error state.
{
NetworkInterfaceCache cache(/*require_wlan=*/false);
fuchsia::net::interfaces::Properties malformed_update;
std::optional<NetworkInterfaceCache::ChangeBits> no_change_result =
cache.AddInterface(std::move(malformed_update));
EXPECT_FALSE(no_change_result.has_value());
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_UNKNOWN);
}
// Adding format error interface in non-empty cache triggers error state.
{
NetworkInterfaceCache cache(/*require_wlan=*/false);
std::optional<NetworkInterfaceCache::ChangeBits> valid_change =
cache.AddInterface(DefaultInterfaceProperties());
ASSERT_TRUE(valid_change.has_value());
fuchsia::net::interfaces::Properties malformed_update;
malformed_update.set_id(kDefaultInterfaceId);
std::optional<NetworkInterfaceCache::ChangeBits> no_change_result =
cache.AddInterface(std::move(malformed_update));
EXPECT_FALSE(no_change_result.has_value());
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_UNKNOWN);
NetworkInterfaceList current_networks;
EXPECT_FALSE(cache.GetOnlineInterfaces(¤t_networks));
EXPECT_EQ(current_networks.size(), 0u);
}
}
TEST_F(NetworkInterfaceCacheTest, AddDuplicateInterfaceSetsErrorState) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
std::optional<NetworkInterfaceCache::ChangeBits> valid_change =
cache.AddInterface(DefaultInterfaceProperties());
ASSERT_TRUE(valid_change.has_value());
std::optional<NetworkInterfaceCache::ChangeBits> error_change =
cache.AddInterface(DefaultInterfaceProperties());
EXPECT_FALSE(error_change.has_value());
NetworkInterfaceList networks;
EXPECT_FALSE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 0u);
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_UNKNOWN);
}
TEST_F(NetworkInterfaceCacheTest, ChangeUnknownInterfaceSetsErrorState) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
fuchsia::net::interfaces::Properties properties;
properties.set_id(kSecondaryInterfaceId);
properties.set_port_class(fuchsia::net::interfaces::PortClass::WithLoopback(
fuchsia::net::interfaces::Empty()));
properties.set_addresses({});
std::optional<NetworkInterfaceCache::ChangeBits> error_change =
cache.ChangeInterface(std::move(properties));
EXPECT_FALSE(error_change.has_value());
NetworkInterfaceList networks;
EXPECT_FALSE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 0u);
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_UNKNOWN);
}
TEST_F(NetworkInterfaceCacheTest, RemoveUnknownInterfaceSetsErrorState) {
NetworkInterfaceCache cache(/*require_wlan=*/false);
std::optional<NetworkInterfaceCache::ChangeBits> error_change =
cache.RemoveInterface(kSecondaryInterfaceId);
EXPECT_FALSE(error_change.has_value());
NetworkInterfaceList networks;
EXPECT_FALSE(cache.GetOnlineInterfaces(&networks));
EXPECT_EQ(networks.size(), 0u);
EXPECT_EQ(cache.GetConnectionType(),
NetworkChangeNotifier::CONNECTION_UNKNOWN);
}
} // namespace net::internal
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