mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-26 02:21:28 +00:00
98 lines
3.1 KiB
Go
98 lines
3.1 KiB
Go
package outbound
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
C "github.com/sagernet/sing-box/constant"
|
|
"github.com/sagernet/sing-box/log"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing-box/outbound/dialer"
|
|
"github.com/sagernet/sing-shadowsocks"
|
|
"github.com/sagernet/sing-shadowsocks/shadowimpl"
|
|
"github.com/sagernet/sing/common/bufio"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
)
|
|
|
|
var _ adapter.Outbound = (*Shadowsocks)(nil)
|
|
|
|
type Shadowsocks struct {
|
|
myOutboundAdapter
|
|
dialer N.Dialer
|
|
method shadowsocks.Method
|
|
serverAddr M.Socksaddr
|
|
}
|
|
|
|
func NewShadowsocks(router adapter.Router, logger log.Logger, tag string, options option.ShadowsocksOutboundOptions) (*Shadowsocks, error) {
|
|
outbound := &Shadowsocks{
|
|
myOutboundAdapter: myOutboundAdapter{
|
|
protocol: C.TypeDirect,
|
|
logger: logger,
|
|
tag: tag,
|
|
network: options.Network.Build(),
|
|
},
|
|
dialer: dialer.New(router, options.DialerOptions),
|
|
}
|
|
var err error
|
|
outbound.method, err = shadowimpl.FetchMethod(options.Method, options.Password)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if options.Server == "" {
|
|
return nil, E.New("missing server address")
|
|
} else if options.ServerPort == 0 {
|
|
return nil, E.New("missing server port")
|
|
}
|
|
outbound.serverAddr = M.ParseSocksaddrHostPort(options.Server, options.ServerPort)
|
|
return outbound, nil
|
|
}
|
|
|
|
func (o *Shadowsocks) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
|
|
switch network {
|
|
case C.NetworkTCP:
|
|
o.logger.WithContext(ctx).Info("outbound connection to ", destination)
|
|
outConn, err := o.dialer.DialContext(ctx, C.NetworkTCP, o.serverAddr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return o.method.DialEarlyConn(outConn, destination), nil
|
|
case C.NetworkUDP:
|
|
o.logger.WithContext(ctx).Info("outbound packet connection to ", destination)
|
|
outConn, err := o.dialer.DialContext(ctx, C.NetworkUDP, o.serverAddr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &bufio.BindPacketConn{PacketConn: o.method.DialPacketConn(outConn), Addr: destination}, nil
|
|
default:
|
|
panic("unknown network " + network)
|
|
}
|
|
}
|
|
|
|
func (o *Shadowsocks) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
|
|
o.logger.WithContext(ctx).Info("outbound packet connection to ", o.serverAddr)
|
|
outConn, err := o.dialer.ListenPacket(ctx, destination)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return o.method.DialPacketConn(&bufio.BindPacketConn{PacketConn: outConn, Addr: o.serverAddr.UDPAddr()}), nil
|
|
}
|
|
|
|
func (o *Shadowsocks) NewConnection(ctx context.Context, conn net.Conn, destination M.Socksaddr) error {
|
|
serverConn, err := o.DialContext(ctx, C.NetworkTCP, destination)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return CopyEarlyConn(ctx, conn, serverConn)
|
|
}
|
|
|
|
func (o *Shadowsocks) NewPacketConnection(ctx context.Context, conn N.PacketConn, destination M.Socksaddr) error {
|
|
serverConn, err := o.ListenPacket(ctx, destination)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(serverConn))
|
|
}
|