mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-16 07:52:21 +08:00
218 lines
6.1 KiB
Go
218 lines
6.1 KiB
Go
package outbound
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import (
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"context"
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"net"
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"os"
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"path/filepath"
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"strings"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/dialer"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common"
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E "github.com/sagernet/sing/common/exceptions"
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F "github.com/sagernet/sing/common/format"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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"github.com/sagernet/sing/common/rw"
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"github.com/sagernet/sing/protocol/socks"
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"github.com/cretz/bine/control"
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"github.com/cretz/bine/tor"
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)
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var _ adapter.Outbound = (*Tor)(nil)
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type Tor struct {
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myOutboundAdapter
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ctx context.Context
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proxy *ProxyListener
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startConf *tor.StartConf
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options map[string]string
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events chan control.Event
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instance *tor.Tor
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socksClient *socks.Client
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}
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func NewTor(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.TorOutboundOptions) (*Tor, error) {
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startConf := newConfig()
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startConf.DataDir = os.ExpandEnv(options.DataDirectory)
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startConf.TempDataDirBase = os.TempDir()
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startConf.ExtraArgs = options.ExtraArgs
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if options.DataDirectory != "" {
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dataDirAbs, _ := filepath.Abs(startConf.DataDir)
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if geoIPPath := filepath.Join(dataDirAbs, "geoip"); rw.FileExists(geoIPPath) && !common.Contains(options.ExtraArgs, "--GeoIPFile") {
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options.ExtraArgs = append(options.ExtraArgs, "--GeoIPFile", geoIPPath)
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}
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if geoIP6Path := filepath.Join(dataDirAbs, "geoip6"); rw.FileExists(geoIP6Path) && !common.Contains(options.ExtraArgs, "--GeoIPv6File") {
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options.ExtraArgs = append(options.ExtraArgs, "--GeoIPv6File", geoIP6Path)
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}
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}
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if options.ExecutablePath != "" {
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startConf.ExePath = options.ExecutablePath
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startConf.ProcessCreator = nil
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startConf.UseEmbeddedControlConn = false
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}
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if startConf.DataDir != "" {
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torrcFile := filepath.Join(startConf.DataDir, "torrc")
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if !rw.FileExists(torrcFile) {
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err := rw.WriteFile(torrcFile, []byte(""))
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if err != nil {
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return nil, err
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}
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}
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startConf.TorrcFile = torrcFile
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}
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outboundDialer, err := dialer.New(router, options.DialerOptions)
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if err != nil {
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return nil, err
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}
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return &Tor{
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myOutboundAdapter: myOutboundAdapter{
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protocol: C.TypeTor,
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network: []string{N.NetworkTCP},
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router: router,
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logger: logger,
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tag: tag,
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dependencies: withDialerDependency(options.DialerOptions),
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},
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ctx: ctx,
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proxy: NewProxyListener(ctx, logger, outboundDialer),
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startConf: &startConf,
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options: options.Options,
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}, nil
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}
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func (t *Tor) Start() error {
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err := t.start()
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if err != nil {
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t.Close()
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}
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return err
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}
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var torLogEvents = []control.EventCode{
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control.EventCodeLogDebug,
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control.EventCodeLogErr,
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control.EventCodeLogInfo,
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control.EventCodeLogNotice,
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control.EventCodeLogWarn,
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}
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func (t *Tor) start() error {
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torInstance, err := tor.Start(t.ctx, t.startConf)
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if err != nil {
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return E.New(strings.ToLower(err.Error()))
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}
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t.instance = torInstance
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t.events = make(chan control.Event, 8)
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err = torInstance.Control.AddEventListener(t.events, torLogEvents...)
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if err != nil {
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return err
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}
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go t.recvLoop()
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err = t.proxy.Start()
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if err != nil {
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return err
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}
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proxyPort := "127.0.0.1:" + F.ToString(t.proxy.Port())
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proxyUsername := t.proxy.Username()
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proxyPassword := t.proxy.Password()
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t.logger.Trace("created upstream proxy at ", proxyPort)
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t.logger.Trace("upstream proxy username ", proxyUsername)
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t.logger.Trace("upstream proxy password ", proxyPassword)
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confOptions := []*control.KeyVal{
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control.NewKeyVal("Socks5Proxy", proxyPort),
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control.NewKeyVal("Socks5ProxyUsername", proxyUsername),
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control.NewKeyVal("Socks5ProxyPassword", proxyPassword),
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}
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err = torInstance.Control.ResetConf(confOptions...)
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if err != nil {
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return err
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}
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if len(t.options) > 0 {
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for key, value := range t.options {
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switch key {
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case "Socks5Proxy",
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"Socks5ProxyUsername",
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"Socks5ProxyPassword":
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continue
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}
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err = torInstance.Control.SetConf(control.NewKeyVal(key, value))
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if err != nil {
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return E.Cause(err, "set ", key, "=", value)
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}
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}
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}
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err = torInstance.EnableNetwork(t.ctx, true)
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if err != nil {
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return err
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}
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info, err := torInstance.Control.GetInfo("net/listeners/socks")
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if err != nil {
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return err
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}
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if len(info) != 1 || info[0].Key != "net/listeners/socks" {
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return E.New("get socks proxy address")
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}
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t.logger.Trace("obtained tor socks5 address ", info[0].Val)
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// TODO: set password for tor socks5 server if supported
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t.socksClient = socks.NewClient(N.SystemDialer, M.ParseSocksaddr(info[0].Val), socks.Version5, "", "")
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return nil
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}
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func (t *Tor) recvLoop() {
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for rawEvent := range t.events {
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switch event := rawEvent.(type) {
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case *control.LogEvent:
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event.Raw = strings.ToLower(event.Raw)
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switch event.Severity {
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case control.EventCodeLogDebug, control.EventCodeLogInfo:
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t.logger.Trace(event.Raw)
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case control.EventCodeLogNotice:
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if strings.Contains(event.Raw, "disablenetwork") || strings.Contains(event.Raw, "socks listener") {
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t.logger.Trace(event.Raw)
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continue
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}
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t.logger.Info(event.Raw)
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case control.EventCodeLogWarn:
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t.logger.Warn(event.Raw)
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case control.EventCodeLogErr:
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t.logger.Error(event.Raw)
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}
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}
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}
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}
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func (t *Tor) Close() error {
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err := common.Close(
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common.PtrOrNil(t.proxy),
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common.PtrOrNil(t.instance),
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)
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if t.events != nil {
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close(t.events)
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t.events = nil
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}
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return err
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}
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func (t *Tor) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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t.logger.InfoContext(ctx, "outbound connection to ", destination)
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return t.socksClient.DialContext(ctx, network, destination)
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}
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func (t *Tor) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
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return nil, os.ErrInvalid
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}
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func (t *Tor) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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return NewConnection(ctx, t, conn, metadata)
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}
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func (t *Tor) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
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return os.ErrInvalid
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}
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