mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-22 16:41:30 +00:00
90 lines
2.8 KiB
Go
90 lines
2.8 KiB
Go
package outbound
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
|
|
"github.com/sagernet/sing/common/bufio"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
|
|
"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"
|
|
)
|
|
|
|
var _ adapter.Outbound = (*Direct)(nil)
|
|
|
|
type Direct struct {
|
|
myOutboundAdapter
|
|
dialer N.Dialer
|
|
overrideOption int
|
|
overrideDestination M.Socksaddr
|
|
}
|
|
|
|
func NewDirect(router adapter.Router, logger log.Logger, tag string, options option.DirectOutboundOptions) *Direct {
|
|
outbound := &Direct{
|
|
myOutboundAdapter: myOutboundAdapter{
|
|
protocol: C.TypeDirect,
|
|
logger: logger,
|
|
tag: tag,
|
|
network: []string{C.NetworkTCP, C.NetworkUDP},
|
|
},
|
|
dialer: dialer.New(router, options.DialerOptions),
|
|
}
|
|
if options.OverrideAddress != "" && options.OverridePort != 0 {
|
|
outbound.overrideOption = 1
|
|
outbound.overrideDestination = M.ParseSocksaddrHostPort(options.OverrideAddress, options.OverridePort)
|
|
} else if options.OverrideAddress != "" {
|
|
outbound.overrideOption = 2
|
|
outbound.overrideDestination = M.ParseSocksaddrHostPort(options.OverrideAddress, options.OverridePort)
|
|
} else if options.OverridePort != 0 {
|
|
outbound.overrideOption = 3
|
|
outbound.overrideDestination = M.Socksaddr{Port: options.OverridePort}
|
|
}
|
|
return outbound
|
|
}
|
|
|
|
func (d *Direct) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
|
|
switch d.overrideOption {
|
|
case 1:
|
|
destination = d.overrideDestination
|
|
case 2:
|
|
newDestination := d.overrideDestination
|
|
newDestination.Port = destination.Port
|
|
destination = newDestination
|
|
case 3:
|
|
destination.Port = d.overrideDestination.Port
|
|
}
|
|
switch network {
|
|
case C.NetworkTCP:
|
|
d.logger.WithContext(ctx).Info("outbound connection to ", destination)
|
|
case C.NetworkUDP:
|
|
d.logger.WithContext(ctx).Info("outbound packet connection to ", destination)
|
|
}
|
|
return d.dialer.DialContext(ctx, network, destination)
|
|
}
|
|
|
|
func (d *Direct) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
|
|
d.logger.WithContext(ctx).Info("outbound packet connection")
|
|
return d.dialer.ListenPacket(ctx, destination)
|
|
}
|
|
|
|
func (d *Direct) NewConnection(ctx context.Context, conn net.Conn, destination M.Socksaddr) error {
|
|
outConn, err := d.DialContext(ctx, C.NetworkTCP, destination)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return bufio.CopyConn(ctx, conn, outConn)
|
|
}
|
|
|
|
func (d *Direct) NewPacketConnection(ctx context.Context, conn N.PacketConn, destination M.Socksaddr) error {
|
|
outConn, err := d.ListenPacket(ctx, destination)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(outConn))
|
|
}
|