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应用层NAT

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snltty
2025-04-18 00:45:38 +08:00
parent 984954ccb6
commit 30488ef9a0
24 changed files with 614 additions and 166 deletions
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4
publish.bat
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@@ -28,6 +28,10 @@ for %%r in (win-x86,win-x64,win-arm64) do (
echo F|xcopy "src\\linker\\msquic-%%r.dll" "public\\extends\\%%r\\linker-%%r\\msquic.dll" /s /f /h /y
echo F|xcopy "src\\linker\\msquic-openssl3-%%r.dll" "public\\extends\\%%r\\linker-%%r\\msquic-openssl.dll" /s /f /h /y
echo F|xcopy "src\\linker\\wintun-%%r.dll" "public\\extends\\%%r\\linker-%%r\\wintun.dll" /s /f /h /y
echo F|xcopy "src\\linker\\WinDivert-%%r.dll" "public\\extends\\%%r\\linker-%%r\\WinDivert.dll" /s /f /h /y
echo F|xcopy "src\\linker\\WinDivert-%%r.sys" "public\\extends\\%%r\\linker-%%r\\WinDivert.sys" /s /f /h /y
echo F|xcopy "src\\linker\\WinDivert64-%%r.sys" "public\\extends\\%%r\\linker-%%r\\WinDivert64.sys" /s /f /h /y
)
msbuild "src\\linker.ics\\linker.ics.csproj" -p:Configuration=Release -p:OutputPath=../../public/extends/win-x64/linker-win-x64

14
src/linker.app/Platforms/Android/MainActivity.cs
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@@ -106,7 +106,7 @@ namespace linker.app
tuntapProxy.Callback = this;
tuntapDecenter = LinkerMessengerEntry.GetService<TuntapDecenter>();
tuntapTransfer.Init(new LinkerVpnDevice(this), this);
tuntapTransfer.Initialize(new LinkerVpnDevice(this), this);
}
public override void OnCreate()
{
@@ -294,7 +294,7 @@ namespace linker.app
this.vpnService = vpnService;
}
public bool Setup(string name, IPAddress address, IPAddress gateway, byte prefixLength, out string error)
public bool Setup(string name, IPAddress address, byte prefixLength, out string error)
{
error = string.Empty;
if (address.Equals(IPAddress.Any)) return false;
@@ -374,7 +374,11 @@ namespace linker.app
public void SetMtu(int value)
{
}
public void SetNat(out string error)
public void SetSystemNat(out string error)
{
error = string.Empty;
}
public void SetAppNat(LinkerTunAppNatItemInfo[] items, out string error)
{
error = string.Empty;
}
@@ -395,10 +399,10 @@ namespace linker.app
return new List<LinkerTunDeviceForwardItem>();
}
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
}
public void DelRoute(LinkerTunDeviceRouteItem[] ips)
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips)
{
}
public async Task<bool> CheckAvailable(bool order = false)

2
src/linker.app/public/web/index.html
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@@ -1 +1 @@
<!doctype html><html lang=""><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="favicon.ico"><title>linker.web</title><link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin=""/><script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script><script defer="defer" src="js/chunk-vendors.cfba5739.js"></script><script defer="defer" src="js/app.656481f7.js"></script><link href="css/chunk-vendors.d8267b33.css" rel="stylesheet"><link href="css/app.3aab4747.css" rel="stylesheet"></head><body><noscript><strong>We're sorry but linker.web doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id="app"></div></body></html>
<!doctype html><html lang=""><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="favicon.ico"><title>linker.web</title><link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin=""/><script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script><script defer="defer" src="js/chunk-vendors.cfba5739.js"></script><script defer="defer" src="js/app.644fc91c.js"></script><link href="css/chunk-vendors.d8267b33.css" rel="stylesheet"><link href="css/app.3aab4747.css" rel="stylesheet"></head><body><noscript><strong>We're sorry but linker.web doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id="app"></div></body></html>

1
src/linker.app/public/web/js/144.e46fa2ab.js Normal file
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277
src/linker.app/public/web/js/89.3ea503b8.js Normal file
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1
src/linker.app/public/web/js/app.644fc91c.js Normal file
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5
src/linker.libs/NetworkHelper.cs
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@@ -315,6 +315,11 @@ namespace linker.libs
{
return ToNetworkValue(ip, ToPrefixValue(prefixLength));
}
public static uint ToBroadcastValue(IPAddress ip, byte prefixLength)
{
return ToBroadcastValue(ToValue(ip), ToPrefixValue(prefixLength));
}
public static uint ToBroadcastValue(uint ip, uint prefixIP)
{
return ip | ~prefixIP;

21
src/linker.messenger.store.file/Storefactory.cs
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@@ -4,6 +4,7 @@ using linker.libs.timer;
using linker.tunnel.connection;
using LiteDB;
using System.Net;
using System.Runtime.ExceptionServices;
namespace linker.messenger.store.file
{
@@ -14,7 +15,14 @@ namespace linker.messenger.store.file
public sealed class Storefactory
{
LiteDatabase database;
public Storefactory()
{
Init();
}
private void Init()
{
BsonMapper bsonMapper = new BsonMapper();
bsonMapper.RegisterType<IPEndPoint>(serialize: (a) => a.ToString(), deserialize: (a) => IPEndPoint.Parse(a.AsString));
@@ -24,12 +32,21 @@ namespace linker.messenger.store.file
bsonMapper.RegisterType<IConnection>(serialize: (a) => string.Empty, deserialize: (a) => null);
string db = Path.Join(Helper.currentDirectory, "./configs/db.db");
if(Directory.Exists(Path.GetDirectoryName(db)) == false)
if (Directory.Exists(Path.GetDirectoryName(db)) == false)
{
Directory.CreateDirectory(Path.GetDirectoryName(db));
}
database = new LiteDatabase(new ConnectionString($"Filename={db};Password={Helper.GlobalString}"), bsonMapper);
try
{
database = new LiteDatabase(new ConnectionString($"Filename={db};Password={Helper.GlobalString}"), bsonMapper);
}
catch (Exception ex)
{
LoggerHelper.Instance.Error(ex);
//让服务自动重启
Environment.Exit(1);
}
if (OperatingSystem.IsAndroid() == false)
{

26
src/linker.messenger.tuntap/TuntapAdapter.cs
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@@ -5,7 +5,6 @@ using linker.messenger.exroute;
using linker.messenger.signin;
using linker.tun;
using linker.tunnel.connection;
using System.Linq;
using System.Net;
namespace linker.messenger.tuntap
@@ -38,7 +37,7 @@ namespace linker.messenger.tuntap
signInClientState.OnSignInSuccess += (times) => tuntapConfigTransfer.RefreshIP();
//初始化网卡
tuntapTransfer.Init(this);
tuntapTransfer.Initialize(this);
//网卡状态发生变化，同步一下信息
tuntapTransfer.OnSetupBefore += () =>
{
@@ -56,6 +55,7 @@ namespace linker.messenger.tuntap
tuntapTransfer.OnSetupSuccess += () =>
{
SetMaps();
SetAppNat();
AddForward();
};
tuntapTransfer.OnShutdownBefore += () =>
@@ -130,7 +130,6 @@ namespace linker.messenger.tuntap
tuntapTransfer.Write(buffer);
}
/// <summary>
/// 重启网卡
/// </summary>
@@ -153,6 +152,9 @@ namespace linker.messenger.tuntap
tuntapTransfer.Shutdown();
}
/// <summary>
/// 设置映射
/// </summary>
private void SetMaps()
{
var maps = tuntapConfigTransfer.Info.Lans
@@ -160,6 +162,24 @@ namespace linker.messenger.tuntap
.Select(c => new LanMapInfo { IP = c.IP, ToIP = c.MapIP, PrefixLength = c.MapPrefixLength }).ToArray();
tuntapTransfer.SetMap(maps);
}
/// <summary>
/// 设置应用层NAT
/// </summary>
private void SetAppNat()
{
if (tuntapConfigTransfer.Info.DisableNat == false)
{
var nats = tuntapConfigTransfer.Info.Lans
.Where(c => c.IP != null && c.IP.Equals(IPAddress.Any) == false && c.MapIP != null && c.MapIP.Equals(IPAddress.Any) == false && c.Disabled == false)
.Select(c => new LinkerTunAppNatItemInfo
{
IP = c.MapIP.Equals(IPAddress.Any) ? c.IP : c.MapIP,
PrefixLength = c.MapIP.Equals(IPAddress.Any) ? c.PrefixLength : c.MapPrefixLength,
}).ToArray();
tuntapTransfer.SetAppNat(nats);
}
}
// <summary>
/// 添加端口转发
/// </summary>

8
src/linker.messenger.tuntap/TuntapDecenter.cs
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@@ -101,9 +101,9 @@ namespace linker.messenger.tuntap
var removeItems = routeItems.Except(_routeItems, new LinkerTunDeviceRouteItemComparer()).ToArray();
if (removeItems.Length > 0)
tuntapTransfer.DelRoute(removeItems);
tuntapTransfer.RemoveRoute(removeItems);
tuntapTransfer.AddRoute(_routeItems, tuntapConfigTransfer.Info.IP);
tuntapTransfer.AddRoute(_routeItems);
tuntapProxy.SetIPs(ips);
foreach (var item in Infos.Values)
@@ -120,7 +120,7 @@ namespace linker.messenger.tuntap
private List<TuntapVeaLanIPAddressList> ParseIPs(List<TuntapInfo> infos)
{
//排除的IP，
uint[] excludeIps = exRouteTransfer.Get().Where(c=>c.Equals(IPAddress.Any)==false).Select(NetworkHelper.ToValue).Distinct().ToArray();
uint[] excludeIps = exRouteTransfer.Get().Where(c => c.Equals(IPAddress.Any) == false).Select(NetworkHelper.ToValue).Distinct().ToArray();
if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
LoggerHelper.Instance.Warning($"tuntap route ex ips : {string.Join(",", excludeIps.Select(c => NetworkHelper.ToIP(c)).ToList())}");
@@ -136,7 +136,7 @@ namespace linker.messenger.tuntap
{
if (wan.Equals(c.Wan))
{
foreach (var item in c.Lans.Where(c=>c.MapIP==null || c.MapIP.Equals(IPAddress.Any)))
foreach (var item in c.Lans.Where(c => c.MapIP == null || c.MapIP.Equals(IPAddress.Any)))
{
item.Exists = true;
}

111
src/linker.messenger.tuntap/TuntapTransfer.cs
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@@ -2,7 +2,6 @@
using System.Net;
using linker.tun;
using linker.libs.timer;
using System.ComponentModel;
namespace linker.messenger.tuntap
{
@@ -32,12 +31,12 @@ namespace linker.messenger.tuntap
}
}
public void Init(ILinkerTunDeviceCallback linkerTunDeviceCallback)
public void Initialize(ILinkerTunDeviceCallback linkerTunDeviceCallback)
{
linkerTunDeviceAdapter.Initialize(linkerTunDeviceCallback);
}
public void Init(ILinkerTunDevice linkerTunDevice, ILinkerTunDeviceCallback linkerTunDeviceCallback)
public void Initialize(ILinkerTunDevice linkerTunDevice, ILinkerTunDeviceCallback linkerTunDeviceCallback)
{
linkerTunDeviceAdapter.Initialize(linkerTunDevice, linkerTunDeviceCallback);
}
@@ -72,11 +71,14 @@ namespace linker.messenger.tuntap
return;
}
if (nat)
linkerTunDeviceAdapter.SetNat();
if (string.IsNullOrWhiteSpace(linkerTunDeviceAdapter.NatError) == false)
{
LoggerHelper.Instance.Error(linkerTunDeviceAdapter.NatError);
linkerTunDeviceAdapter.SetSystemNat();
if (string.IsNullOrWhiteSpace(linkerTunDeviceAdapter.NatError) == false)
{
LoggerHelper.Instance.Error(linkerTunDeviceAdapter.NatError);
}
}
OnSetupSuccess();
}
catch (Exception ex)
@@ -95,6 +97,35 @@ namespace linker.messenger.tuntap
});
}
/// <summary>
/// 停止网卡
/// </summary>
public void Shutdown(bool notify = true)
{
if (operatingManager.StartOperation() == false)
{
return;
}
try
{
if (notify) OnShutdownBefore();
linkerTunDeviceAdapter.Shutdown();
if (notify) OnShutdownSuccess();
}
catch (Exception ex)
{
if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
{
LoggerHelper.Instance.Error(ex);
}
}
finally
{
if (notify)
OnShutdownAfter();
operatingManager.StopOperation();
}
}
/// <summary>
/// 刷新网卡
/// </summary>
@@ -123,64 +154,64 @@ namespace linker.messenger.tuntap
}
});
}
/// <summary>
/// 停止网卡
/// 设置应用层NAT
/// </summary>
public void Shutdown(bool notify = true)
/// <param name="items"></param>
public void SetAppNat(LinkerTunAppNatItemInfo[] items)
{
if (operatingManager.StartOperation() == false)
{
return;
}
try
{
if (notify)
OnShutdownBefore();
linkerTunDeviceAdapter.Shutdown();
linkerTunDeviceAdapter.RemoveNat();
if (notify)
OnShutdownSuccess();
}
catch (Exception ex)
{
if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
{
LoggerHelper.Instance.Error(ex);
}
}
finally
{
if (notify)
OnShutdownAfter();
operatingManager.StopOperation();
}
if (string.IsNullOrWhiteSpace(NatError) == false)
linkerTunDeviceAdapter.SetAppNat(items);
}
/// <summary>
/// 添加转发
/// </summary>
/// <param name="forward"></param>
public void AddForward(List<LinkerTunDeviceForwardItem> forward)
{
linkerTunDeviceAdapter.AddForward(forward);
}
/// <summary>
/// 移除转发
/// </summary>
/// <param name="forward"></param>
public void RemoveForward(List<LinkerTunDeviceForwardItem> forward)
{
linkerTunDeviceAdapter.RemoveForward(forward);
}
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
/// <summary>
/// 添加路由
/// </summary>
/// <param name="ips"></param>
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
linkerTunDeviceAdapter.AddRoute(ips, ip);
linkerTunDeviceAdapter.AddRoute(ips);
}
public void DelRoute(LinkerTunDeviceRouteItem[] ips)
/// <summary>
/// 移除路由
/// </summary>
/// <param name="ips"></param>
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips)
{
linkerTunDeviceAdapter.DelRoute(ips);
linkerTunDeviceAdapter.RemoveRoute(ips);
}
/// <summary>
/// 添加映射
/// </summary>
/// <param name="maps"></param>
public void SetMap(LanMapInfo[] maps)
{
linkerTunDeviceAdapter.SetMap(maps);
}
/// <summary>
/// 检查网卡是否可用
/// </summary>
/// <param name="order"></param>
/// <returns></returns>
public async Task<bool> CheckAvailable(bool order = false)
{
return await linkerTunDeviceAdapter.CheckAvailable(order).ConfigureAwait(false);

30
src/linker.tun/ILinkerTunDevice.cs
View File

@@ -25,16 +25,18 @@ namespace linker.tun
/// </summary>
/// <param name="name"></param>
/// <param name="address"></param>
/// <param name="gateway"></param>
/// <param name="prefixLength"></param>
/// <param name="error"></param>
/// <returns></returns>
public bool Setup(string name,IPAddress address, IPAddress gateway, byte prefixLength, out string error);
public bool Setup(string name,IPAddress address, byte prefixLength, out string error);
/// <summary>
/// 关闭
/// </summary>
public void Shutdown();
/// <summary>
/// 刷新网卡
/// </summary>
public void Refresh();
/// <summary>
@@ -43,9 +45,14 @@ namespace linker.tun
/// <param name="value"></param>
public void SetMtu(int value);
/// <summary>
/// 设置NAT转发
/// 设置系统NAT转发
/// </summary>
public void SetNat(out string error);
public void SetSystemNat(out string error);
/// <summary>
/// 设置应用层NAT转发
/// </summary>
/// <param name="error"></param>
public void SetAppNat(LinkerTunAppNatItemInfo[] items, out string error);
/// <summary>
/// 移除NAT转发
/// </summary>
@@ -72,15 +79,12 @@ namespace linker.tun
/// 添加路由
/// </summary>
/// <param name="ips"></param>
/// <param name="ip"></param>
/// <param name="gateway">是不是网关，是网关，将使用NAT转发，不是网关将添加路由</param>
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip);
public void AddRoute(LinkerTunDeviceRouteItem[] ips);
/// <summary>
/// 删除路由
/// </summary>
/// <param name="ip"></param>
/// <param name="gateway">是不是网关，是网关，将删除NAT转发，不是网关将删除路由</param>
public void DelRoute(LinkerTunDeviceRouteItem[] ip);
/// <param name="ips"></param>
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips);
/// <summary>
/// 读取数据包
@@ -260,4 +264,10 @@ namespace linker.tun
/// </summary>
Running = 2
}
public sealed class LinkerTunAppNatItemInfo
{
public IPAddress IP { get; set; }
public byte PrefixLength { get; set; }
}
}

14
src/linker.tun/LinkerLinuxTunDevice.cs
View File

@@ -26,7 +26,7 @@ namespace linker.tun
{
}
public bool Setup(string name, IPAddress address, IPAddress gateway, byte prefixLength, out string error)
public bool Setup(string name, IPAddress address, byte prefixLength, out string error)
{
error = string.Empty;
@@ -149,7 +149,7 @@ namespace linker.tun
{
return CommandHelper.Linux(string.Empty, ["ip route show default | awk '{print $5}'"]);
}
public void SetNat(out string error)
public void SetSystemNat(out string error)
{
error = string.Empty;
if (address == null || address.Equals(IPAddress.Any)) return;
@@ -182,6 +182,10 @@ namespace linker.tun
error = ex.Message;
}
}
public void SetAppNat(LinkerTunAppNatItemInfo[] items,out string error)
{
error = string.Empty;
}
public void RemoveNat(out string error)
{
error = string.Empty;
@@ -275,14 +279,14 @@ namespace linker.tun
}
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
string[] commands = ips.Select(item =>
{
uint prefixValue = NetworkHelper.ToPrefixValue(item.PrefixLength);
IPAddress network = NetworkHelper.ToNetworkIP(item.Address, prefixValue);
return $"ip route add {network}/{item.PrefixLength} via {ip} dev {Name} metric 1 ";
return $"ip route add {network}/{item.PrefixLength} via {address} dev {Name} metric 1 ";
}).ToArray();
if (commands.Length > 0)
{
@@ -291,7 +295,7 @@ namespace linker.tun
CommandHelper.Linux(string.Empty, commands);
}
}
public void DelRoute(LinkerTunDeviceRouteItem[] ip)
public void RemoveRoute(LinkerTunDeviceRouteItem[] ip)
{
string[] commands = ip.Select(item =>
{

16
src/linker.tun/LinkerOsxTunDevice.cs
View File

@@ -25,7 +25,7 @@ namespace linker.tun
}
public bool Setup(string name, IPAddress address, IPAddress gateway, byte prefixLength, out string error)
public bool Setup(string name, IPAddress address, byte prefixLength, out string error)
{
this.name = name;
error = string.Empty;
@@ -65,21 +65,21 @@ namespace linker.tun
}
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
string[] commands = ips.Select(item =>
{
IPAddress _ip = NetworkHelper.ToNetworkIP(item.Address, item.PrefixLength);
return $"route add -net {_ip}/{item.PrefixLength} {ip}";
return $"route add -net {_ip}/{item.PrefixLength} {address}";
}).ToArray();
if (commands.Length > 0)
{
CommandHelper.Osx(string.Empty, commands.ToArray());
}
}
public void DelRoute(LinkerTunDeviceRouteItem[] ip)
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips)
{
string[] commands = ip.Select(item =>
string[] commands = ips.Select(item =>
{
IPAddress _ip = NetworkHelper.ToNetworkIP(item.Address, item.PrefixLength);
return $"route delete -net {_ip}/{item.PrefixLength}";
@@ -95,7 +95,7 @@ namespace linker.tun
CommandHelper.Osx(string.Empty, new string[] { $"ifconfig {Name} mtu {value}" });
}
public void SetNat(out string error)
public void SetSystemNat(out string error)
{
error = string.Empty;
/*
@@ -113,6 +113,10 @@ namespace linker.tun
});
*/
}
public void SetAppNat(LinkerTunAppNatItemInfo[] items, out string error)
{
error = string.Empty;
}
public void RemoveNat(out string error)
{
error = string.Empty;

109
src/linker.tun/LinkerTunDeviceAdapter.cs
View File

@@ -77,6 +77,12 @@ namespace linker.tun
}
return false;
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="linkerTunDevice">网卡实现</param>
/// <param name="linkerTunDeviceCallback">读取数据回调</param>
/// <returns></returns>
public bool Initialize(ILinkerTunDevice linkerTunDevice, ILinkerTunDeviceCallback linkerTunDeviceCallback)
{
this.linkerTunDevice = linkerTunDevice;
@@ -105,7 +111,7 @@ namespace linker.tun
setupError = $"{System.Runtime.InteropServices.RuntimeInformation.OSDescription} not support";
return false;
}
linkerTunDevice.Setup(deviceName, address, NetworkHelper.ToGatewayIP(address, prefixLength), prefixLength, out setupError);
linkerTunDevice.Setup(deviceName, address, prefixLength, out setupError);
if (string.IsNullOrWhiteSpace(setupError) == false)
{
return false;
@@ -126,7 +132,6 @@ namespace linker.tun
}
return false;
}
/// <summary>
/// 关闭网卡
/// </summary>
@@ -141,6 +146,7 @@ namespace linker.tun
{
cancellationTokenSource?.Cancel();
linkerTunDevice?.Shutdown();
linkerTunDevice?.RemoveNat(out string error);
}
catch (Exception)
{
@@ -152,8 +158,6 @@ namespace linker.tun
setupError = string.Empty;
return true;
}
/// <summary>
/// 刷新网卡
/// </summary>
@@ -163,19 +167,26 @@ namespace linker.tun
}
/// <summary>
/// 添加NAT转发,这会将来到本网卡且目标IP不是本网卡IP的包转发到其它网卡
/// 设置系统层NAT
/// </summary>
public void SetNat()
public void SetSystemNat()
{
linkerTunDevice?.RemoveNat(out string error);
linkerTunDevice?.SetNat(out natError);
linkerTunDevice?.SetSystemNat(out natError);
}
/// <summary>
/// 移除NAT转发
/// 设置应用层NAT
/// </summary>
/// <param name="items"></param>
public void SetAppNat(LinkerTunAppNatItemInfo[] items)
{
linkerTunDevice?.SetAppNat(items, out natError);
}
/// <summary>
/// 移除NAT
/// </summary>
public void RemoveNat()
{
linkerTunDevice?.RemoveNat(out string error);
linkerTunDevice.RemoveNat(out string error);
}
/// <summary>
@@ -208,17 +219,17 @@ namespace linker.tun
/// </summary>
/// <param name="ips"></param>
/// <param name="ip"></param>
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
linkerTunDevice?.AddRoute(ips, ip);
linkerTunDevice?.AddRoute(ips);
}
/// <summary>
/// 删除路由
/// </summary>
/// <param name="ips"></param>
public void DelRoute(LinkerTunDeviceRouteItem[] ips)
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips)
{
linkerTunDevice?.DelRoute(ips);
linkerTunDevice?.RemoveRoute(ips);
}
@@ -262,7 +273,7 @@ namespace linker.tun
/// </summary>
/// <param name="buffer"></param>
/// <returns></returns>
public unsafe bool Write(ReadOnlyMemory<byte> buffer)
public bool Write(ReadOnlyMemory<byte> buffer)
{
if (linkerTunDevice != null && Status == LinkerTunDeviceStatus.Running)
{
@@ -272,6 +283,40 @@ namespace linker.tun
return false;
}
private void ToMapIP(ReadOnlyMemory<byte> buffer)
{
//只支持映射IPV4
if ((byte)(buffer.Span[0] >> 4 & 0b1111) != 4) return;
//映射表不为空
if (natDic.IsEmpty) return;
uint realDist = NetworkHelper.ToValue(buffer.Span.Slice(12, 4));
if (natDic.TryGetValue(realDist, out uint fakeDist))
{
ReWriteIP(buffer, BinaryPrimitives.ReverseEndianness(fakeDist), 12);
}
}
private void MapToRealIP(ReadOnlyMemory<byte> buffer)
{
//只支持映射IPV4
if ((byte)(buffer.Span[0] >> 4 & 0b1111) != 4) return;
//映射表不为空
if (masks.Length == 0 || mapDic.Count == 0) return;
uint fakeDist = NetworkHelper.ToValue(buffer.Span.Slice(16, 4));
for (int i = 0; i < masks.Length; i++)
{
//目标IP网络号存在映射表中，找到映射后的真实网络号，替换网络号得到最终真实的IP
if (mapDic.TryGetValue(fakeDist & masks[i], out uint realNetwork))
{
uint realDist = realNetwork | (fakeDist & ~masks[i]);
ReWriteIP(buffer, BinaryPrimitives.ReverseEndianness(realDist), 16);
natDic.AddOrUpdate(realDist, fakeDist, (a, b) => fakeDist);
break;
}
}
}
private unsafe void ReWriteIP(ReadOnlyMemory<byte> buffer, uint newIP, int pos)
{
fixed (byte* ptr = buffer.Span)
@@ -306,39 +351,6 @@ namespace linker.tun
}
}
}
private void ToMapIP(ReadOnlyMemory<byte> buffer)
{
//只支持映射IPV4
if ((byte)(buffer.Span[0] >> 4 & 0b1111) != 4) return;
//映射表不为空
if (natDic.IsEmpty) return;
uint realDist = NetworkHelper.ToValue(buffer.Span.Slice(12, 4));
if (natDic.TryGetValue(realDist, out uint fakeDist))
{
ReWriteIP(buffer, BinaryPrimitives.ReverseEndianness( fakeDist), 12);
}
}
private void MapToRealIP(ReadOnlyMemory<byte> buffer)
{
//只支持映射IPV4
if ((byte)(buffer.Span[0] >> 4 & 0b1111) != 4) return;
//映射表不为空
if (masks.Length == 0 || mapDic.Count == 0) return;
uint fakeDist = NetworkHelper.ToValue(buffer.Span.Slice(16, 4));
for (int i = 0; i < masks.Length; i++)
{
//目标IP网络号存在映射表中，找到映射后的真实网络号，替换网络号得到最终真实的IP
if (mapDic.TryGetValue(fakeDist & masks[i], out uint realNetwork))
{
uint realDist = realNetwork | (fakeDist & ~masks[i]);
ReWriteIP(buffer, BinaryPrimitives.ReverseEndianness(realDist), 16);
natDic.AddOrUpdate(realDist, fakeDist, (a, b) => fakeDist);
break;
}
}
}
/// <summary>
/// 设置IP映射列表
/// </summary>
@@ -397,7 +409,6 @@ namespace linker.tun
return sum;
}
public async Task<bool> CheckAvailable(bool order = false)
{
return await linkerTunDevice.CheckAvailable(order);

48
src/linker.tun/LinkerWinTunDevice.cs
View File

@@ -27,14 +27,13 @@ namespace linker.tun
private CancellationTokenSource tokenSource;
private WinDivert winDivert;
private WinDivertNAT winDivertNAT;
public LinkerWinTunDevice()
{
}
public bool Setup(string name, IPAddress address, IPAddress gateway, byte prefixLength, out string error)
public bool Setup(string name, IPAddress address, byte prefixLength, out string error)
{
this.name = name;
this.address = address;
@@ -184,9 +183,9 @@ namespace linker.tun
$"netsh interface ipv6 set subinterface {interfaceNumber} mtu={value} store=persistent"
});
}
public void SetNat(out string error)
{
public void SetSystemNat(out string error)
{
error = string.Empty;
if (address == null || address.Equals(IPAddress.Any)) return;
@@ -194,31 +193,33 @@ namespace linker.tun
{
CommandHelper.PowerShell($"start-service WinNat", [], out error);
CommandHelper.PowerShell($"Install-WindowsFeature -Name Routing -IncludeManagementTools", [], out error);
CommandHelper.PowerShell($"Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All", [], out error);
CommandHelper.PowerShell($"Set-ItemProperty -Path \"HKLM:\\SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\" -Name \"IPEnableRouter\" -Value 1", [], out error);
IPAddress network = NetworkHelper.ToNetworkIP(this.address, NetworkHelper.ToPrefixValue(prefixLength));
CommandHelper.PowerShell($"Remove-NetNat -Name {Name} -Confirm:$false", [], out error);
CommandHelper.PowerShell($"New-NetNat -Name {Name} -InternalIPInterfaceAddressPrefix {network}/{prefixLength}", [], out error);
if (string.IsNullOrWhiteSpace(error))
string result = CommandHelper.PowerShell($"Get-NetNat", [], out error);
if (string.IsNullOrWhiteSpace(result) == false && result.Contains($"{network}/{prefixLength}"))
{
return;
}
/*
CommandHelper.Windows(string.Empty, [$"net start SharedAccess"]);
string result = CommandHelper.Windows(string.Empty, [$"linker.ics.exe {defaultInterfaceName} {Name} enable"]);
if (result.Contains($"enable success"))
{
return;
}
*/
error = "NetNat and ICS not supported";
error = $"NetNat and ICS not supported,{error}";
}
catch (Exception ex)
{
error = ex.Message;
}
}
public void SetAppNat(LinkerTunAppNatItemInfo[] items, out string error)
{
error = string.Empty;
winDivertNAT?.Dispose();
winDivertNAT = new WinDivertNAT(new WinDivertNAT.AddrInfo(address, prefixLength), items.Select(c => new WinDivertNAT.AddrInfo(c.IP, c.PrefixLength)).ToArray());
//winDivertNAT.Setup();
}
public void RemoveNat(out string error)
{
error = string.Empty;
@@ -228,12 +229,19 @@ namespace linker.tun
{
CommandHelper.PowerShell($"start-service WinNat", [], out error);
CommandHelper.PowerShell($"Remove-NetNat -Name {Name} -Confirm:$false", [], out error);
//CommandHelper.Windows(string.Empty, [$"linker.ics.exe {defaultInterfaceName} {Name} disable"]);
}
catch (Exception ex)
{
error = ex.Message;
}
try
{
winDivertNAT?.Dispose();
}
catch (Exception)
{
}
}
@@ -271,7 +279,7 @@ namespace linker.tun
}
public void AddRoute(LinkerTunDeviceRouteItem[] ips, IPAddress ip)
public void AddRoute(LinkerTunDeviceRouteItem[] ips)
{
if (interfaceNumber > 0)
{
@@ -281,7 +289,7 @@ namespace linker.tun
IPAddress mask = NetworkHelper.ToIP(maskValue);
IPAddress _ip = NetworkHelper.ToNetworkIP(item.Address, maskValue);
return $"route add {_ip} mask {mask} {ip} metric 5 if {interfaceNumber}";
return $"route add {_ip} mask {mask} {address} metric 5 if {interfaceNumber}";
}).ToArray();
if (commands.Length > 0)
{
@@ -291,9 +299,9 @@ namespace linker.tun
}
}
}
public void DelRoute(LinkerTunDeviceRouteItem[] ip)
public void RemoveRoute(LinkerTunDeviceRouteItem[] ips)
{
string[] commands = ip.Select(item =>
string[] commands = ips.Select(item =>
{
uint maskValue = NetworkHelper.ToPrefixValue(item.PrefixLength);
IPAddress mask = NetworkHelper.ToIP(maskValue);

88
src/linker.tun/WinDivertNAT.cs
View File

@@ -1,23 +1,40 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using linker.libs;
using linker.libs.timer;
using System.Buffers.Binary;
using System.Collections.Frozen;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using static linker.libs.winapis.SECUR32;
using static System.Collections.Specialized.BitVector32;
namespace linker.tun
{
/// <summary>
/// 应用层NAT
/// </summary>
internal sealed class WinDivertNAT
public sealed class WinDivertNAT
{
public WinDivertNAT()
WinDivert winDivert;
AddrInfo src;
AddrInfo[] dsts;
NetworkIPv4Addr srcAddr;
//网络号对应网卡IP，用来替换源IP
private FrozenDictionary<uint, NetworkIPv4Addr> sourceDic = new Dictionary<uint, NetworkIPv4Addr>().ToFrozenDictionary();
public WinDivertNAT(AddrInfo src, AddrInfo[] dsts)
{
/*
winDivert = new WinDivert("inbound and (( ip.SrcAddr == 10.18.18.0/24 and ip.DstAddr == 192.168.56.0/24) or ( ip.SrcAddr == 192.168.56.0/24))", WinDivert.Layer.Network, 0, WinDivert.Flag.Sniff);
this.src = src;
this.dsts = dsts;
InitializeInterfaceIP();
}
public void Setup()
{
srcAddr = IPv4Addr.Parse(src.IP.ToString());
StringBuilder sb = new StringBuilder("inbound");
sb.Append($" and (ip.SrcAddr >= {src.NetworkIP} and ip.SrcAddr <= {src.BroadcastIP})");
winDivert = new WinDivert(sb.ToString(), WinDivert.Layer.Network, 0, WinDivert.Flag.Sniff);
var packet = new Memory<byte>(new byte[WinDivert.MTUMax]);
var abuf = new Memory<WinDivertAddress>(new WinDivertAddress[1]);
TimerHelper.Async(() =>
@@ -45,16 +62,15 @@ namespace linker.tun
}
});
*/
}
// NetworkIPv4Addr sourceAddr = IPv4Addr.Parse("10.18.18.23");
private unsafe void ModifyPacket(WinDivertParseResult p, ref WinDivertAddress addr)
{
/*
if (p.IPv4Hdr->SrcAddr == sourceAddr)
if (NetworkHelper.ToNetworkValue(BinaryPrimitives.ReverseEndianness(p.IPv4Hdr->SrcAddr.Raw), src.PrefixValue) == src.NetworkValue)
{
Console.WriteLine($"{p.IPv4Hdr->SrcAddr}->{p.IPv4Hdr->DstAddr}");
}*/
Console.WriteLine($"{p.IPv4Hdr->SrcAddr}->{p.IPv4Hdr->DstAddr}================================");
}
//WinDivert.CalcChecksums(p.Packet.Span, ref addr, 0);
}
@@ -79,5 +95,43 @@ namespace linker.tun
}
*/
}
private void InitializeInterfaceIP()
{
}
public void Dispose()
{
winDivert?.Dispose();
}
public sealed class AddrInfo
{
public AddrInfo(IPAddress ip, byte prefixLength)
{
IP = ip;
PrefixLength = prefixLength;
PrefixValue = NetworkHelper.ToPrefixValue(PrefixLength);
NetworkValue = NetworkHelper.ToNetworkValue(IP, PrefixLength);
BroadcastValue = NetworkHelper.ToBroadcastValue(IP, PrefixLength);
NetworkAddr = IPv4Addr.Parse(NetworkHelper.ToIP(NetworkValue).ToString());
NetworkIP = NetworkHelper.ToIP(NetworkValue);
BroadcastIP = NetworkHelper.ToIP(BroadcastValue);
}
public IPAddress IP { get; }
public byte PrefixLength { get; }
public NetworkIPv4Addr NetworkAddr { get; private set; }
public uint PrefixValue { get; private set; }
public uint NetworkValue { get; private set; }
public uint BroadcastValue { get; private set; }
public IPAddress NetworkIP { get; private set; }
public IPAddress BroadcastIP { get; private set; }
}
}
}

3
src/linker/Program.cs
View File

@@ -2,9 +2,6 @@
using System.ServiceProcess;
using System.Diagnostics;
using linker.messenger.entry;
using linker.libs.extends;
using System.Text;
using System.Text.Json;
namespace linker
{

0
src/linker/WinDivert64.dll → src/linker/WinDivert-win-x64.dll
View File

0
src/linker/WinDivert32.dll → src/linker/WinDivert-win-x86.dll
View File

0
src/linker/WinDivert32.sys → src/linker/WinDivert-win-x86.sys
View File

0
src/linker/WinDivert64.sys → src/linker/WinDivert64-win-x64.sys
View File

BIN
src/linker/WinDivert64-win-x86.sys Normal file
View File

Binary file not shown.

2
version.txt
View File

@@ -1,5 +1,5 @@
v1.7.3
2025-04-17 12:00:54
2025-04-18 00:45:38
1. 优化自动分配IP
2. 优化网卡，排除不明数据包
3. 虚拟网卡点对网IP映射，用于解决网段冲突