117 lines
3.4 KiB
Go
117 lines
3.4 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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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/dialer"
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"github.com/sagernet/sing-box/common/tls"
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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-shadowtls"
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"github.com/sagernet/sing/common"
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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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)
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var _ adapter.Outbound = (*ShadowTLS)(nil)
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type ShadowTLS struct {
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myOutboundAdapter
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client *shadowtls.Client
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}
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func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSOutboundOptions) (*ShadowTLS, error) {
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outbound := &ShadowTLS{
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myOutboundAdapter: myOutboundAdapter{
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protocol: C.TypeShadowTLS,
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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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}
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if options.TLS == nil || !options.TLS.Enabled {
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return nil, C.ErrTLSRequired
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}
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if options.Version == 0 {
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options.Version = 1
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}
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if options.Version == 1 {
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options.TLS.MinVersion = "1.2"
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options.TLS.MaxVersion = "1.2"
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}
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tlsConfig, err := tls.NewClient(ctx, options.Server, common.PtrValueOrDefault(options.TLS))
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if err != nil {
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return nil, err
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}
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var tlsHandshakeFunc shadowtls.TLSHandshakeFunc
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switch options.Version {
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case 1, 2:
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tlsHandshakeFunc = func(ctx context.Context, conn net.Conn, _ shadowtls.TLSSessionIDGeneratorFunc) error {
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return common.Error(tls.ClientHandshake(ctx, conn, tlsConfig))
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}
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case 3:
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if idConfig, loaded := tlsConfig.(tls.WithSessionIDGenerator); loaded {
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tlsHandshakeFunc = func(ctx context.Context, conn net.Conn, sessionIDGenerator shadowtls.TLSSessionIDGeneratorFunc) error {
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idConfig.SetSessionIDGenerator(sessionIDGenerator)
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return common.Error(tls.ClientHandshake(ctx, conn, tlsConfig))
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}
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} else {
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stdTLSConfig, err := tlsConfig.Config()
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if err != nil {
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return nil, err
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}
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tlsHandshakeFunc = shadowtls.DefaultTLSHandshakeFunc(options.Password, stdTLSConfig)
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}
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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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client, err := shadowtls.NewClient(shadowtls.ClientConfig{
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Version: options.Version,
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Password: options.Password,
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Server: options.ServerOptions.Build(),
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Dialer: outboundDialer,
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TLSHandshake: tlsHandshakeFunc,
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Logger: logger,
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})
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if err != nil {
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return nil, err
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}
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outbound.client = client
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return outbound, nil
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}
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func (h *ShadowTLS) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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ctx, metadata := adapter.AppendContext(ctx)
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metadata.Outbound = h.tag
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metadata.Destination = destination
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switch N.NetworkName(network) {
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case N.NetworkTCP:
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return h.client.DialContext(ctx)
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default:
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return nil, os.ErrInvalid
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}
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}
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func (h *ShadowTLS) 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 (h *ShadowTLS) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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return NewConnection(ctx, h, conn, metadata)
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}
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func (h *ShadowTLS) 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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