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https://github.com/XTLS/Xray-core.git
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39ba1f7952
* Proxy: Implement tun raw network interface inbound support for Linux * Proxy: Tun. Include "android" as build condition for build of tun_default implementation * Proxy: Tun. Add .Close() cleanup calls to Handler.Init() where needed * Proxy: Add Tun for Android * Proxy: Tun. Implement Windows support --------- Co-authored-by: yuhan6665 <1588741+yuhan6665@users.noreply.github.com>
85 lines
2.0 KiB
Go
85 lines
2.0 KiB
Go
//go:build windows
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package tun
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import (
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"golang.org/x/sys/windows"
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"golang.zx2c4.com/wintun"
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"gvisor.dev/gvisor/pkg/tcpip/stack"
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)
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// WindowsTun is an object that handles tun network interface on Windows
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// current version is heavily stripped to do nothing more,
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// then create a network interface, to be provided as endpoint to gVisor ip stack
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type WindowsTun struct {
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options TunOptions
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adapter *wintun.Adapter
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session wintun.Session
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MTU uint32
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}
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// WindowsTun implements Tun
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var _ Tun = (*WindowsTun)(nil)
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// WindowsTun implements GVisorTun
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var _ GVisorTun = (*WindowsTun)(nil)
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// NewTun creates a Wintun interface with the given name. Should a Wintun
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// interface with the same name exist, it tried to be reused.
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func NewTun(options TunOptions) (Tun, error) {
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// instantiate wintun adapter
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adapter, err := open(options.Name)
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if err != nil {
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return nil, err
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}
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// start the interface with ring buffer capacity of 8 MiB
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session, err := adapter.StartSession(0x800000)
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if err != nil {
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_ = adapter.Close()
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return nil, err
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}
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tun := &WindowsTun{
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options: options,
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adapter: adapter,
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session: session,
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// there is currently no iphndl.dll support, which is the netlink library for windows
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// so there is nowhere to change MTU for the Wintun interface, and we take its default value
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MTU: wintun.PacketSizeMax,
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}
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return tun, nil
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}
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func open(name string) (*wintun.Adapter, error) {
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var guid *windows.GUID
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// try to open existing adapter by name
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adapter, err := wintun.OpenAdapter(name)
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if err == nil {
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return adapter, nil
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}
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// try to create adapter anew
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adapter, err = wintun.CreateAdapter(name, "Xray", guid)
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if err == nil {
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return adapter, nil
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}
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return nil, err
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}
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func (t *WindowsTun) Start() error {
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return nil
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}
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func (t *WindowsTun) Close() error {
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t.session.End()
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_ = t.adapter.Close()
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return nil
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}
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// newEndpoint builds new gVisor stack.LinkEndpoint (WintunEndpoint) on top of WindowsTun
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func (t *WindowsTun) newEndpoint() (stack.LinkEndpoint, error) {
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return &WintunEndpoint{tun: t}, nil
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}
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