| 1 | // Copyright (C) Microsoft Corporation. All rights reserved. |
| 2 | |
| 3 | #pragma once |
| 4 | |
| 5 | #include <netlistmgr.h> |
| 6 | |
| 7 | #include "INetworkingEngine.h" |
| 8 | #include "GnsChannel.h" |
| 9 | #include "DnsResolver.h" |
| 10 | #include "WslCoreConfig.h" |
| 11 | #include "WslCoreNetworkEndpointSettings.h" |
| 12 | #include "WslCoreHostDnsInfo.h" |
| 13 | #include "WslCoreNetworkingSupport.h" |
| 14 | #include "hns_schema.h" |
| 15 | |
| 16 | namespace wsl::core { |
| 17 | |
| 18 | class NatNetworking final : public INetworkingEngine |
| 19 | { |
| 20 | public: |
| 21 | NatNetworking( |
| 22 | HCS_SYSTEM system, |
| 23 | wsl::windows::common::hcs::unique_hcn_network&& network, |
| 24 | GnsChannel&& gnsChannel, |
| 25 | Config& config, |
| 26 | wil::unique_socket&& dnsHvsocket, |
| 27 | LPCWSTR dnsOptions = LX_INIT_RESOLVCONF_FULL_HEADER); |
| 28 | ~NatNetworking() override; |
| 29 | |
| 30 | // Note: This class cannot be moved because m_networkNotifyHandle captures a 'this' pointer. |
| 31 | NatNetworking(const NatNetworking&) = delete; |
| 32 | NatNetworking(NatNetworking&&) = delete; |
| 33 | NatNetworking& operator=(const NatNetworking&) = delete; |
| 34 | NatNetworking& operator=(NatNetworking&&) = delete; |
| 35 | |
| 36 | void Initialize() override; |
| 37 | void TraceLoggingRundown() noexcept override; |
| 38 | void FillInitialConfiguration(LX_MINI_INIT_NETWORKING_CONFIGURATION& message) override; |
| 39 | void StartPortTracker(wil::unique_socket&& socket) override; |
| 40 | |
| 41 | static wsl::windows::common::hcs::unique_hcn_network CreateNetwork(wsl::core::Config& config); |
| 42 | static bool IsHyperVFirewallSupported(const wsl::core::Config& vmConfig) noexcept; |
| 43 | |
| 44 | private: |
| 45 | static void NETIOAPI_API_ OnNetworkConnectivityChange(PVOID context, NL_NETWORK_CONNECTIVITY_HINT hint); |
| 46 | static std::optional<ULONGLONG> FindNatInterfaceLuid(const SOCKADDR_INET& natAddress, const NL_NETWORK_CONNECTIVITY_HINT& currentConnectivityHint); |
| 47 | std::pair<networking::EphemeralHcnEndpoint, wsl::shared::hns::HNSEndpoint> CreateEndpoint(const std::wstring& IpAddress) const; |
| 48 | static wsl::windows::common::hcs::unique_hcn_network CreateNetworkInternal(wsl::core::Config& config); |
| 49 | |
| 50 | void RefreshGuestConnection(NL_NETWORK_CONNECTIVITY_HINT connectivityHint) noexcept; |
| 51 | _Requires_lock_held_(m_lock) |
| 52 | void UpdateDns(std::optional<PCWSTR> gatewayAddress = std::nullopt) noexcept; |
| 53 | void UpdateMtu(); |
| 54 | void AttachEndpoint(networking::EphemeralHcnEndpoint&& endpoint, const wsl::shared::hns::HNSEndpoint& properties); |
| 55 | void TelemetryConnectionCallback(NLM_CONNECTIVITY hostConnectivity, uint32_t telemetryCounter) noexcept; |
| 56 | |
| 57 | mutable wil::srwlock m_lock; |
| 58 | |
| 59 | // Handle for the Hcn* Api. Owned by the caller (WslCoreVm), this is a non-owning copy |
| 60 | const HCS_SYSTEM m_system{}; |
| 61 | Config& m_config; |
| 62 | wsl::windows::common::hcs::unique_hcn_network m_network{}; |
| 63 | |
| 64 | bool m_connectivityTelemetryEnabled{false}; |
| 65 | wsl::core::networking::ConnectivityTelemetry m_connectivityTelemetry; |
| 66 | |
| 67 | // Optional DNS resolver used for DNS tunneling |
| 68 | std::optional<networking::DnsResolver> m_dnsTunnelingResolver; |
| 69 | |
| 70 | std::wstring m_dnsTunnelingIpAddress; |
| 71 | |
| 72 | std::chrono::time_point<std::chrono::steady_clock> m_objectCreationTime = std::chrono::steady_clock::now(); |
| 73 | |
| 74 | std::optional<networking::DnsSuffixRegistryWatcher> m_dnsSuffixRegistryWatcher; |
| 75 | // The latest DNS settings configured in Linux |
| 76 | _Guarded_by_(m_lock) networking::DnsInfo m_trackedDnsSettings {}; |
| 77 | |
| 78 | // If true, DNS settings are retrieved from host adapters (mirrored mode) |
| 79 | // rather than using the shared access DNS proxy |
| 80 | bool m_useMirrorDnsSettings = false; |
| 81 | |
| 82 | // Options/header for /etc/resolv.conf |
| 83 | LPCWSTR m_dnsOptions = nullptr; |
| 84 | |
| 85 | GnsChannel m_gnsChannel; |
| 86 | std::shared_ptr<networking::NetworkSettings> m_networkSettings; |
| 87 | networking::EphemeralHcnEndpoint m_endpoint; |
| 88 | ULONG m_networkMtu = 0; |
| 89 | |
| 90 | networking::unique_notify_handle m_networkNotifyHandle{}; |
| 91 | }; |
| 92 | |
| 93 | } // namespace wsl::core |