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Add chained inbound support

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世界 2022-08-29 19:43:13 +08:00
parent f5e0ead01c
commit dbda0ed98a
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GPG key ID: CD109927C34A63C4
16 changed files with 544 additions and 289 deletions
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11
adapter/inbound.go
View file

@ -2,11 +2,13 @@ package adapter
import (
"context"
"net"
"net/netip"
"github.com/sagernet/sing-box/common/process"
"github.com/sagernet/sing-dns"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
type Inbound interface {
@ -15,6 +17,13 @@ type Inbound interface {
Tag() string
}
type InjectableInbound interface {
Inbound
Network() []string
NewConnection(ctx context.Context, conn net.Conn, metadata InboundContext) error
NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata InboundContext) error
}
type InboundContext struct {
Inbound string
InboundType string
@ -29,6 +38,8 @@ type InboundContext struct {
// cache
InboundDetour string
LastInbound string
OriginDestination M.Socksaddr
DomainStrategy dns.DomainStrategy
SniffEnabled bool

2
box.go
View file

@ -138,7 +138,7 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
}
outbounds = append(outbounds, out)
}
err = router.Initialize(outbounds, func() adapter.Outbound {
err = router.Initialize(inbounds, outbounds, func() adapter.Outbound {
out, oErr := outbound.New(ctx, router, logFactory.NewLogger("outbound/direct"), option.Outbound{Type: "direct", Tag: "default"})
common.Must(oErr)
outbounds = append(outbounds, out)

284
inbound/default.go
View file

@ -3,25 +3,18 @@ package inbound
import (
"context"
"net"
"net/netip"
"os"
"sync"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/proxyproto"
"github.com/sagernet/sing-box/common/settings"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/database64128/tfo-go"
)
var _ adapter.Inbound = (*myInboundAdapter)(nil)
@ -62,6 +55,10 @@ func (a *myInboundAdapter) Tag() string {
return a.tag
}
func (a *myInboundAdapter) Network() []string {
return a.network
}
func (a *myInboundAdapter) Start() error {
var err error
if common.Contains(a.network, N.NetworkTCP) {
@ -102,38 +99,6 @@ func (a *myInboundAdapter) Start() error {
return nil
}
func (a *myInboundAdapter) ListenTCP() (net.Listener, error) {
var err error
bindAddr := M.SocksaddrFrom(netip.Addr(a.listenOptions.Listen), a.listenOptions.ListenPort)
var tcpListener net.Listener
if !a.listenOptions.TCPFastOpen {
tcpListener, err = net.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
} else {
tcpListener, err = tfo.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
}
if err == nil {
a.logger.Info("tcp server started at ", tcpListener.Addr())
}
if a.listenOptions.ProxyProtocol {
a.logger.Debug("proxy protocol enabled")
tcpListener = &proxyproto.Listener{Listener: tcpListener}
}
a.tcpListener = tcpListener
return tcpListener, err
}
func (a *myInboundAdapter) ListenUDP() (net.PacketConn, error) {
bindAddr := M.SocksaddrFrom(netip.Addr(a.listenOptions.Listen), a.listenOptions.ListenPort)
udpConn, err := net.ListenUDP(M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.UDPAddr())
if err != nil {
return nil, err
}
a.udpConn = udpConn
a.udpAddr = bindAddr
a.logger.Info("udp server started at ", udpConn.LocalAddr())
return udpConn, err
}
func (a *myInboundAdapter) Close() error {
var err error
if a.clearSystemProxy != nil {
@ -170,20 +135,10 @@ func (a *myInboundAdapter) newPacketConnection(ctx context.Context, conn N.Packe
return a.router.RoutePacketConnection(ctx, conn, metadata)
}
func (a *myInboundAdapter) loopTCPIn() {
tcpListener := a.tcpListener
for {
conn, err := tcpListener.Accept()
if err != nil {
return
}
go a.injectTCP(conn, adapter.InboundContext{})
}
}
func (a *myInboundAdapter) createMetadata(conn net.Conn, metadata adapter.InboundContext) adapter.InboundContext {
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.InboundDetour = a.listenOptions.Detour
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
@ -199,166 +154,6 @@ func (a *myInboundAdapter) createMetadata(conn net.Conn, metadata adapter.Inboun
return metadata
}
func (a *myInboundAdapter) injectTCP(conn net.Conn, metadata adapter.InboundContext) {
ctx := log.ContextWithNewID(a.ctx)
metadata = a.createMetadata(conn, metadata)
a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
hErr := a.connHandler.NewConnection(ctx, conn, metadata)
if hErr != nil {
conn.Close()
a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
}
}
func (a *myInboundAdapter) routeTCP(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) {
a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
hErr := a.newConnection(ctx, conn, metadata)
if hErr != nil {
conn.Close()
a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
}
}
func (a *myInboundAdapter) loopUDPIn() {
defer close(a.packetOutboundClosed)
_buffer := buf.StackNewPacket()
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
defer buffer.Release()
buffer.IncRef()
defer buffer.DecRef()
packetService := (*myInboundPacketAdapter)(a)
for {
buffer.Reset()
n, addr, err := a.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOOBIn() {
defer close(a.packetOutboundClosed)
_buffer := buf.StackNewPacket()
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
defer buffer.Release()
buffer.IncRef()
defer buffer.DecRef()
packetService := (*myInboundPacketAdapter)(a)
oob := make([]byte, 1024)
for {
buffer.Reset()
n, oobN, _, addr, err := a.udpConn.ReadMsgUDPAddrPort(buffer.FreeBytes(), oob)
if err != nil {
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPInThreadSafe() {
defer close(a.packetOutboundClosed)
packetService := (*myInboundPacketAdapter)(a)
for {
buffer := buf.NewPacket()
n, addr, err := a.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
buffer.Release()
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
buffer.Release()
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOOBInThreadSafe() {
defer close(a.packetOutboundClosed)
packetService := (*myInboundPacketAdapter)(a)
oob := make([]byte, 1024)
for {
buffer := buf.NewPacket()
n, oobN, _, addr, err := a.udpConn.ReadMsgUDPAddrPort(buffer.FreeBytes(), oob)
if err != nil {
buffer.Release()
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
buffer.Release()
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOut() {
for {
select {
case packet := <-a.packetOutbound:
err := a.writePacket(packet.buffer, packet.destination)
if err != nil && !E.IsClosed(err) {
a.newError(E.New("write back udp: ", err))
}
continue
case <-a.packetOutboundClosed:
}
for {
select {
case packet := <-a.packetOutbound:
packet.buffer.Release()
default:
return
}
}
}
}
func (a *myInboundAdapter) newError(err error) {
a.logger.Error(err)
}
@ -375,72 +170,3 @@ func NewError(logger log.ContextLogger, ctx context.Context, err error) {
}
logger.ErrorContext(ctx, err)
}
func (a *myInboundAdapter) writePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
defer buffer.Release()
if destination.IsFqdn() {
udpAddr, err := net.ResolveUDPAddr(N.NetworkUDP, destination.String())
if err != nil {
return err
}
return common.Error(a.udpConn.WriteTo(buffer.Bytes(), udpAddr))
}
return common.Error(a.udpConn.WriteToUDPAddrPort(buffer.Bytes(), destination.AddrPort()))
}
type myInboundPacketAdapter myInboundAdapter
func (s *myInboundPacketAdapter) ReadPacket(buffer *buf.Buffer) (M.Socksaddr, error) {
n, addr, err := s.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
return M.Socksaddr{}, err
}
buffer.Truncate(n)
return M.SocksaddrFromNetIP(addr), nil
}
func (s *myInboundPacketAdapter) WriteIsThreadUnsafe() {
}
type myInboundPacket struct {
buffer *buf.Buffer
destination M.Socksaddr
}
func (s *myInboundPacketAdapter) Upstream() any {
return s.udpConn
}
func (s *myInboundPacketAdapter) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
s.packetAccess.RLock()
defer s.packetAccess.RUnlock()
select {
case <-s.packetOutboundClosed:
return os.ErrClosed
default:
}
s.packetOutbound <- &myInboundPacket{buffer, destination}
return nil
}
func (s *myInboundPacketAdapter) Close() error {
return s.udpConn.Close()
}
func (s *myInboundPacketAdapter) LocalAddr() net.Addr {
return s.udpConn.LocalAddr()
}
func (s *myInboundPacketAdapter) SetDeadline(t time.Time) error {
return s.udpConn.SetDeadline(t)
}
func (s *myInboundPacketAdapter) SetReadDeadline(t time.Time) error {
return s.udpConn.SetReadDeadline(t)
}
func (s *myInboundPacketAdapter) SetWriteDeadline(t time.Time) error {
return s.udpConn.SetWriteDeadline(t)
}

67
inbound/default_tcp.go Normal file
View file

@ -0,0 +1,67 @@
package inbound
import (
"context"
"net"
"net/netip"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/proxyproto"
"github.com/sagernet/sing-box/log"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/database64128/tfo-go"
)
func (a *myInboundAdapter) ListenTCP() (net.Listener, error) {
var err error
bindAddr := M.SocksaddrFrom(netip.Addr(a.listenOptions.Listen), a.listenOptions.ListenPort)
var tcpListener net.Listener
if !a.listenOptions.TCPFastOpen {
tcpListener, err = net.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
} else {
tcpListener, err = tfo.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
}
if err == nil {
a.logger.Info("tcp server started at ", tcpListener.Addr())
}
if a.listenOptions.ProxyProtocol {
a.logger.Debug("proxy protocol enabled")
tcpListener = &proxyproto.Listener{Listener: tcpListener}
}
a.tcpListener = tcpListener
return tcpListener, err
}
func (a *myInboundAdapter) loopTCPIn() {
tcpListener := a.tcpListener
for {
conn, err := tcpListener.Accept()
if err != nil {
return
}
go a.injectTCP(conn, adapter.InboundContext{})
}
}
func (a *myInboundAdapter) injectTCP(conn net.Conn, metadata adapter.InboundContext) {
ctx := log.ContextWithNewID(a.ctx)
metadata = a.createMetadata(conn, metadata)
a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
hErr := a.connHandler.NewConnection(ctx, conn, metadata)
if hErr != nil {
conn.Close()
a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
}
}
func (a *myInboundAdapter) routeTCP(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) {
a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
hErr := a.newConnection(ctx, conn, metadata)
if hErr != nil {
conn.Close()
a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
}
}

237
inbound/default_udp.go Normal file
View file

@ -0,0 +1,237 @@
package inbound
import (
"net"
"net/netip"
"os"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func (a *myInboundAdapter) ListenUDP() (net.PacketConn, error) {
bindAddr := M.SocksaddrFrom(netip.Addr(a.listenOptions.Listen), a.listenOptions.ListenPort)
udpConn, err := net.ListenUDP(M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.UDPAddr())
if err != nil {
return nil, err
}
a.udpConn = udpConn
a.udpAddr = bindAddr
a.logger.Info("udp server started at ", udpConn.LocalAddr())
return udpConn, err
}
func (a *myInboundAdapter) loopUDPIn() {
defer close(a.packetOutboundClosed)
_buffer := buf.StackNewPacket()
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
defer buffer.Release()
buffer.IncRef()
defer buffer.DecRef()
packetService := (*myInboundPacketAdapter)(a)
for {
buffer.Reset()
n, addr, err := a.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOOBIn() {
defer close(a.packetOutboundClosed)
_buffer := buf.StackNewPacket()
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
defer buffer.Release()
buffer.IncRef()
defer buffer.DecRef()
packetService := (*myInboundPacketAdapter)(a)
oob := make([]byte, 1024)
for {
buffer.Reset()
n, oobN, _, addr, err := a.udpConn.ReadMsgUDPAddrPort(buffer.FreeBytes(), oob)
if err != nil {
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPInThreadSafe() {
defer close(a.packetOutboundClosed)
packetService := (*myInboundPacketAdapter)(a)
for {
buffer := buf.NewPacket()
n, addr, err := a.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
buffer.Release()
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
if err != nil {
buffer.Release()
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOOBInThreadSafe() {
defer close(a.packetOutboundClosed)
packetService := (*myInboundPacketAdapter)(a)
oob := make([]byte, 1024)
for {
buffer := buf.NewPacket()
n, oobN, _, addr, err := a.udpConn.ReadMsgUDPAddrPort(buffer.FreeBytes(), oob)
if err != nil {
buffer.Release()
return
}
buffer.Truncate(n)
var metadata adapter.InboundContext
metadata.Inbound = a.tag
metadata.InboundType = a.protocol
metadata.SniffEnabled = a.listenOptions.SniffEnabled
metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
metadata.Source = M.SocksaddrFromNetIP(addr)
metadata.OriginDestination = a.udpAddr
err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
if err != nil {
buffer.Release()
a.newError(E.Cause(err, "process packet from ", metadata.Source))
}
}
}
func (a *myInboundAdapter) loopUDPOut() {
for {
select {
case packet := <-a.packetOutbound:
err := a.writePacket(packet.buffer, packet.destination)
if err != nil && !E.IsClosed(err) {
a.newError(E.New("write back udp: ", err))
}
continue
case <-a.packetOutboundClosed:
}
for {
select {
case packet := <-a.packetOutbound:
packet.buffer.Release()
default:
return
}
}
}
}
func (a *myInboundAdapter) writePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
defer buffer.Release()
if destination.IsFqdn() {
udpAddr, err := net.ResolveUDPAddr(N.NetworkUDP, destination.String())
if err != nil {
return err
}
return common.Error(a.udpConn.WriteTo(buffer.Bytes(), udpAddr))
}
return common.Error(a.udpConn.WriteToUDPAddrPort(buffer.Bytes(), destination.AddrPort()))
}
type myInboundPacketAdapter myInboundAdapter
func (s *myInboundPacketAdapter) ReadPacket(buffer *buf.Buffer) (M.Socksaddr, error) {
n, addr, err := s.udpConn.ReadFromUDPAddrPort(buffer.FreeBytes())
if err != nil {
return M.Socksaddr{}, err
}
buffer.Truncate(n)
return M.SocksaddrFromNetIP(addr), nil
}
func (s *myInboundPacketAdapter) WriteIsThreadUnsafe() {
}
type myInboundPacket struct {
buffer *buf.Buffer
destination M.Socksaddr
}
func (s *myInboundPacketAdapter) Upstream() any {
return s.udpConn
}
func (s *myInboundPacketAdapter) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
s.packetAccess.RLock()
defer s.packetAccess.RUnlock()
select {
case <-s.packetOutboundClosed:
return os.ErrClosed
default:
}
s.packetOutbound <- &myInboundPacket{buffer, destination}
return nil
}
func (s *myInboundPacketAdapter) Close() error {
return s.udpConn.Close()
}
func (s *myInboundPacketAdapter) LocalAddr() net.Addr {
return s.udpConn.LocalAddr()
}
func (s *myInboundPacketAdapter) SetDeadline(t time.Time) error {
return s.udpConn.SetDeadline(t)
}
func (s *myInboundPacketAdapter) SetReadDeadline(t time.Time) error {
return s.udpConn.SetReadDeadline(t)
}
func (s *myInboundPacketAdapter) SetWriteDeadline(t time.Time) error {
return s.udpConn.SetWriteDeadline(t)
}

10
inbound/http.go
View file

@ -5,6 +5,7 @@ import (
"context"
"crypto/tls"
"net"
"os"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
@ -17,7 +18,10 @@ import (
"github.com/sagernet/sing/protocol/http"
)
var _ adapter.Inbound = (*HTTP)(nil)
var (
_ adapter.Inbound = (*HTTP)(nil)
_ adapter.InjectableInbound = (*HTTP)(nil)
)
type HTTP struct {
myInboundAdapter
@ -74,6 +78,10 @@ func (h *HTTP) NewConnection(ctx context.Context, conn net.Conn, metadata adapte
return http.HandleConnection(ctx, conn, std_bufio.NewReader(conn), h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
}
func (h *HTTP) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (a *myInboundAdapter) upstreamUserHandler(metadata adapter.InboundContext) adapter.UpstreamHandlerAdapter {
return adapter.NewUpstreamHandler(metadata, a.newUserConnection, a.streamUserPacketConnection, a)
}

10
inbound/mixed.go
View file

@ -4,6 +4,7 @@ import (
std_bufio "bufio"
"context"
"net"
"os"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
@ -20,7 +21,10 @@ import (
"github.com/sagernet/sing/protocol/socks/socks5"
)
var _ adapter.Inbound = (*Mixed)(nil)
var (
_ adapter.Inbound = (*Mixed)(nil)
_ adapter.InjectableInbound = (*Mixed)(nil)
)
type Mixed struct {
myInboundAdapter
@ -57,3 +61,7 @@ func (h *Mixed) NewConnection(ctx context.Context, conn net.Conn, metadata adapt
reader := std_bufio.NewReader(bufio.NewCachedReader(conn, buf.As([]byte{headerType})))
return http.HandleConnection(ctx, conn, reader, h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
}
func (h *Mixed) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}

10
inbound/shadowsocks.go
View file

@ -3,6 +3,7 @@ package inbound
import (
"context"
"net"
"os"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
@ -30,7 +31,10 @@ func NewShadowsocks(ctx context.Context, router adapter.Router, logger log.Conte
}
}
var _ adapter.Inbound = (*Shadowsocks)(nil)
var (
_ adapter.Inbound = (*Shadowsocks)(nil)
_ adapter.InjectableInbound = (*Shadowsocks)(nil)
)
type Shadowsocks struct {
myInboundAdapter
@ -80,6 +84,10 @@ func (h *Shadowsocks) NewPacket(ctx context.Context, conn N.PacketConn, buffer *
return h.service.NewPacket(adapter.WithContext(ctx, &metadata), conn, buffer, adapter.UpstreamMetadata(metadata))
}
func (h *Shadowsocks) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (h *Shadowsocks) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
h.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
return h.router.RouteConnection(ctx, conn, metadata)

9
inbound/shadowsocks_multi.go
View file

@ -21,7 +21,10 @@ import (
N "github.com/sagernet/sing/common/network"
)
var _ adapter.Inbound = (*ShadowsocksMulti)(nil)
var (
_ adapter.Inbound = (*ShadowsocksMulti)(nil)
_ adapter.InjectableInbound = (*ShadowsocksMulti)(nil)
)
type ShadowsocksMulti struct {
myInboundAdapter
@ -114,6 +117,10 @@ func (h *ShadowsocksMulti) NewPacket(ctx context.Context, conn N.PacketConn, buf
return h.service.NewPacket(adapter.WithContext(ctx, &metadata), conn, buffer, adapter.UpstreamMetadata(metadata))
}
func (h *ShadowsocksMulti) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (h *ShadowsocksMulti) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
userIndex, loaded := auth.UserFromContext[int](ctx)
if !loaded {

9
inbound/shadowsocks_relay.go
View file

@ -17,7 +17,10 @@ import (
N "github.com/sagernet/sing/common/network"
)
var _ adapter.Inbound = (*ShadowsocksMulti)(nil)
var (
_ adapter.Inbound = (*ShadowsocksRelay)(nil)
_ adapter.InjectableInbound = (*ShadowsocksRelay)(nil)
)
type ShadowsocksRelay struct {
myInboundAdapter
@ -76,6 +79,10 @@ func (h *ShadowsocksRelay) NewPacket(ctx context.Context, conn N.PacketConn, buf
return h.service.NewPacket(adapter.WithContext(ctx, &metadata), conn, buffer, adapter.UpstreamMetadata(metadata))
}
func (h *ShadowsocksRelay) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (h *ShadowsocksRelay) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
destinationIndex, loaded := auth.UserFromContext[int](ctx)
if !loaded {

10
inbound/socks.go
View file

@ -3,6 +3,7 @@ package inbound
import (
"context"
"net"
"os"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
@ -13,7 +14,10 @@ import (
"github.com/sagernet/sing/protocol/socks"
)
var _ adapter.Inbound = (*Socks)(nil)
var (
_ adapter.Inbound = (*Socks)(nil)
_ adapter.InjectableInbound = (*Socks)(nil)
)
type Socks struct {
myInboundAdapter
@ -40,3 +44,7 @@ func NewSocks(ctx context.Context, router adapter.Router, logger log.ContextLogg
func (h *Socks) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
return socks.HandleConnection(ctx, conn, h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
}
func (h *Socks) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}

9
inbound/trojan.go
View file

@ -20,7 +20,10 @@ import (
"github.com/sagernet/sing/protocol/trojan"
)
var _ adapter.Inbound = (*Trojan)(nil)
var (
_ adapter.Inbound = (*Trojan)(nil)
_ adapter.InjectableInbound = (*Trojan)(nil)
)
type Trojan struct {
myInboundAdapter
@ -157,6 +160,10 @@ func (h *Trojan) NewConnection(ctx context.Context, conn net.Conn, metadata adap
return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
}
func (h *Trojan) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (h *Trojan) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
userIndex, loaded := auth.UserFromContext[int](ctx)
if !loaded {

9
inbound/vmess.go
View file

@ -21,7 +21,10 @@ import (
N "github.com/sagernet/sing/common/network"
)
var _ adapter.Inbound = (*VMess)(nil)
var (
_ adapter.Inbound = (*VMess)(nil)
_ adapter.InjectableInbound = (*VMess)(nil)
)
type VMess struct {
myInboundAdapter
@ -137,6 +140,10 @@ func (h *VMess) NewConnection(ctx context.Context, conn net.Conn, metadata adapt
return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
}
func (h *VMess) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}
func (h *VMess) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
userIndex, loaded := auth.UserFromContext[int](ctx)
if !loaded {

1
option/inbound.go
View file

@ -111,5 +111,6 @@ type ListenOptions struct {
TCPFastOpen bool `json:"tcp_fast_open,omitempty"`
UDPTimeout int64 `json:"udp_timeout,omitempty"`
ProxyProtocol bool `json:"proxy_protocol,omitempty"`
Detour string `json:"detour,omitempty"`
InboundOptions
}

54
route/router.go
View file

@ -65,6 +65,7 @@ type Router struct {
ctx context.Context
logger log.ContextLogger
dnsLogger log.ContextLogger
inboundByTag map[string]adapter.Inbound
outbounds []adapter.Outbound
outboundByTag map[string]adapter.Outbound
rules []adapter.Rule
@ -295,7 +296,11 @@ func NewRouter(ctx context.Context, logger log.ContextLogger, dnsLogger log.Cont
return router, nil
}
func (r *Router) Initialize(outbounds []adapter.Outbound, defaultOutbound func() adapter.Outbound) error {
func (r *Router) Initialize(inbounds []adapter.Inbound, outbounds []adapter.Outbound, defaultOutbound func() adapter.Outbound) error {
inboundByTag := make(map[string]adapter.Inbound)
for _, inbound := range inbounds {
inboundByTag[inbound.Tag()] = inbound
}
outboundByTag := make(map[string]adapter.Outbound)
for _, detour := range outbounds {
outboundByTag[detour.Tag()] = detour
@ -360,6 +365,7 @@ func (r *Router) Initialize(outbounds []adapter.Outbound, defaultOutbound func()
r.logger.Info("using ", defaultOutboundForConnection.Type(), "[", description, "] as default outbound for connection")
r.logger.Info("using ", defaultOutboundForPacketConnection.Type(), "[", packetDescription, "] as default outbound for packet connection")
}
r.inboundByTag = inboundByTag
r.outbounds = outbounds
r.defaultOutboundForConnection = defaultOutboundForConnection
r.defaultOutboundForPacketConnection = defaultOutboundForPacketConnection
@ -498,6 +504,29 @@ func (r *Router) DefaultOutbound(network string) adapter.Outbound {
}
func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
if metadata.InboundDetour != "" {
if metadata.LastInbound == metadata.InboundDetour {
return E.New("routing loop on detour: ", metadata.InboundDetour)
}
detour := r.inboundByTag[metadata.InboundDetour]
if detour == nil {
return E.New("inbound detour not found: ", metadata.InboundDetour)
}
injectable, isInjectable := detour.(adapter.InjectableInbound)
if !isInjectable {
return E.New("inbound detour is not injectable: ", metadata.InboundDetour)
}
if !common.Contains(injectable.Network(), N.NetworkTCP) {
return E.New("inject: TCP unsupported")
}
metadata.InboundDetour = ""
metadata.LastInbound = metadata.Inbound
err := injectable.NewConnection(ctx, conn, metadata)
if err != nil {
return E.Cause(err, "inject ", detour.Tag())
}
return nil
}
metadata.Network = N.NetworkTCP
switch metadata.Destination.Fqdn {
case mux.Destination.Fqdn:
@ -555,6 +584,29 @@ func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata ad
}
func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
if metadata.InboundDetour != "" {
if metadata.LastInbound == metadata.InboundDetour {
return E.New("routing loop on detour: ", metadata.InboundDetour)
}
detour := r.inboundByTag[metadata.InboundDetour]
if detour == nil {
return E.New("inbound detour not found: ", metadata.InboundDetour)
}
injectable, isInjectable := detour.(adapter.InjectableInbound)
if !isInjectable {
return E.New("inbound detour is not injectable: ", metadata.InboundDetour)
}
if !common.Contains(injectable.Network(), N.NetworkUDP) {
return E.New("inject: UDP unsupported")
}
metadata.InboundDetour = ""
metadata.LastInbound = metadata.Inbound
err := injectable.NewPacketConnection(ctx, conn, metadata)
if err != nil {
return E.Cause(err, "inject ", detour.Tag())
}
return nil
}
metadata.Network = N.NetworkUDP
if metadata.SniffEnabled {
buffer := buf.NewPacket()

101
test/inbound_detour_test.go Normal file
View file

@ -0,0 +1,101 @@
package main
import (
"net/netip"
"testing"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-shadowsocks/shadowaead_2022"
)
func TestChainedInbound(t *testing.T) {
method := shadowaead_2022.List[0]
password := mkBase64(t, 16)
startInstance(t, option.Options{
Log: &option.LogOptions{
Level: "error",
},
Inbounds: []option.Inbound{
{
Type: C.TypeMixed,
Tag: "mixed-in",
MixedOptions: option.HTTPMixedInboundOptions{
ListenOptions: option.ListenOptions{
Listen: option.ListenAddress(netip.IPv4Unspecified()),
ListenPort: clientPort,
},
},
},
{
Type: C.TypeShadowsocks,
ShadowsocksOptions: option.ShadowsocksInboundOptions{
ListenOptions: option.ListenOptions{
Listen: option.ListenAddress(netip.IPv4Unspecified()),
ListenPort: serverPort,
Detour: "detour",
},
Method: method,
Password: password,
},
},
{
Type: C.TypeShadowsocks,
Tag: "detour",
ShadowsocksOptions: option.ShadowsocksInboundOptions{
ListenOptions: option.ListenOptions{
Listen: option.ListenAddress(netip.IPv4Unspecified()),
ListenPort: otherPort,
},
Method: method,
Password: password,
},
},
},
Outbounds: []option.Outbound{
{
Type: C.TypeDirect,
},
{
Type: C.TypeShadowsocks,
Tag: "ss-out",
ShadowsocksOptions: option.ShadowsocksOutboundOptions{
ServerOptions: option.ServerOptions{
Server: "127.0.0.1",
ServerPort: serverPort,
},
Method: method,
Password: password,
OutboundDialerOptions: option.OutboundDialerOptions{
DialerOptions: option.DialerOptions{
Detour: "detour-out",
},
},
},
},
{
Type: C.TypeShadowsocks,
Tag: "detour-out",
ShadowsocksOptions: option.ShadowsocksOutboundOptions{
ServerOptions: option.ServerOptions{
Server: "127.0.0.1",
ServerPort: serverPort,
},
Method: method,
Password: password,
},
},
},
Route: &option.RouteOptions{
Rules: []option.Rule{
{
DefaultOptions: option.DefaultRule{
Inbound: []string{"mixed-in"},
Outbound: "ss-out",
},
},
},
},
})
testSuit(t, clientPort, testPort)
}