sing-box/transport/sip003/v2ray.go
2024-12-03 17:36:52 +08:00

119 lines
3 KiB
Go

package sip003
import (
"context"
"net"
"strconv"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/tls"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/v2ray"
"github.com/sagernet/sing-vmess"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/json/badoption"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func init() {
RegisterPlugin("v2ray-plugin", newV2RayPlugin)
}
func newV2RayPlugin(ctx context.Context, pluginOpts Args, router adapter.Router, dialer N.Dialer, serverAddr M.Socksaddr) (Plugin, error) {
var tlsOptions option.OutboundTLSOptions
if _, loaded := pluginOpts.Get("tls"); loaded {
tlsOptions.Enabled = true
}
if certPath, certLoaded := pluginOpts.Get("cert"); certLoaded {
tlsOptions.CertificatePath = certPath
}
if certRaw, certLoaded := pluginOpts.Get("certRaw"); certLoaded {
certHead := "-----BEGIN CERTIFICATE-----"
certTail := "-----END CERTIFICATE-----"
fixedCert := certHead + "\n" + certRaw + "\n" + certTail
tlsOptions.Certificate = []string{fixedCert}
}
mode := "websocket"
if modeOpt, loaded := pluginOpts.Get("mode"); loaded {
mode = modeOpt
}
host := "cloudfront.com"
path := "/"
if hostOpt, loaded := pluginOpts.Get("host"); loaded {
host = hostOpt
tlsOptions.ServerName = hostOpt
}
if pathOpt, loaded := pluginOpts.Get("path"); loaded {
path = pathOpt
}
var tlsClient tls.Config
var err error
if tlsOptions.Enabled {
tlsClient, err = tls.NewClient(ctx, serverAddr.AddrString(), tlsOptions)
if err != nil {
return nil, err
}
}
var mux int
var transportOptions option.V2RayTransportOptions
switch mode {
case "websocket":
transportOptions = option.V2RayTransportOptions{
Type: C.V2RayTransportTypeWebsocket,
WebsocketOptions: option.V2RayWebsocketOptions{
Headers: map[string]badoption.Listable[string]{
"Host": []string{host},
},
Path: path,
},
}
if muxOpt, loaded := pluginOpts.Get("mux"); loaded {
muxVal, err := strconv.Atoi(muxOpt)
if err != nil {
return nil, E.Cause(err, "parse mux value")
}
mux = muxVal
} else {
mux = 1
}
case "quic":
transportOptions = option.V2RayTransportOptions{
Type: C.V2RayTransportTypeQUIC,
}
default:
return nil, E.New("v2ray-plugin: unknown mode: " + mode)
}
transport, err := v2ray.NewClientTransport(context.Background(), dialer, serverAddr, transportOptions, tlsClient)
if err != nil {
return nil, err
}
if mux > 0 {
return &v2rayMuxWrapper{transport}, nil
}
return transport, nil
}
var _ Plugin = (*v2rayMuxWrapper)(nil)
type v2rayMuxWrapper struct {
adapter.V2RayClientTransport
}
func (w *v2rayMuxWrapper) DialContext(ctx context.Context) (net.Conn, error) {
conn, err := w.V2RayClientTransport.DialContext(ctx)
if err != nil {
return nil, err
}
return vmess.NewMuxConnWrapper(conn, vmess.MuxDestination), nil
}