mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-22 18:17:52 -05:00
496 lines
12 KiB
Go
496 lines
12 KiB
Go
package inbound
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/v2fly/v2ray-core/v4/app/proxyman"
|
|
"github.com/v2fly/v2ray-core/v4/common"
|
|
"github.com/v2fly/v2ray-core/v4/common/buf"
|
|
"github.com/v2fly/v2ray-core/v4/common/net"
|
|
"github.com/v2fly/v2ray-core/v4/common/serial"
|
|
"github.com/v2fly/v2ray-core/v4/common/session"
|
|
"github.com/v2fly/v2ray-core/v4/common/signal/done"
|
|
"github.com/v2fly/v2ray-core/v4/common/task"
|
|
"github.com/v2fly/v2ray-core/v4/features/routing"
|
|
"github.com/v2fly/v2ray-core/v4/features/stats"
|
|
"github.com/v2fly/v2ray-core/v4/proxy"
|
|
"github.com/v2fly/v2ray-core/v4/transport/internet"
|
|
"github.com/v2fly/v2ray-core/v4/transport/internet/tcp"
|
|
"github.com/v2fly/v2ray-core/v4/transport/internet/udp"
|
|
"github.com/v2fly/v2ray-core/v4/transport/pipe"
|
|
)
|
|
|
|
type worker interface {
|
|
Start() error
|
|
Close() error
|
|
Port() net.Port
|
|
Proxy() proxy.Inbound
|
|
}
|
|
|
|
type tcpWorker struct {
|
|
address net.Address
|
|
port net.Port
|
|
proxy proxy.Inbound
|
|
stream *internet.MemoryStreamConfig
|
|
recvOrigDest bool
|
|
tag string
|
|
dispatcher routing.Dispatcher
|
|
sniffingConfig *proxyman.SniffingConfig
|
|
uplinkCounter stats.Counter
|
|
downlinkCounter stats.Counter
|
|
|
|
hub internet.Listener
|
|
|
|
ctx context.Context
|
|
}
|
|
|
|
func getTProxyType(s *internet.MemoryStreamConfig) internet.SocketConfig_TProxyMode {
|
|
if s == nil || s.SocketSettings == nil {
|
|
return internet.SocketConfig_Off
|
|
}
|
|
return s.SocketSettings.Tproxy
|
|
}
|
|
|
|
func (w *tcpWorker) callback(conn internet.Connection) {
|
|
ctx, cancel := context.WithCancel(w.ctx)
|
|
sid := session.NewID()
|
|
ctx = session.ContextWithID(ctx, sid)
|
|
|
|
if w.recvOrigDest {
|
|
var dest net.Destination
|
|
switch getTProxyType(w.stream) {
|
|
case internet.SocketConfig_Redirect:
|
|
d, err := tcp.GetOriginalDestination(conn)
|
|
if err != nil {
|
|
newError("failed to get original destination").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
} else {
|
|
dest = d
|
|
}
|
|
case internet.SocketConfig_TProxy:
|
|
dest = net.DestinationFromAddr(conn.LocalAddr())
|
|
}
|
|
if dest.IsValid() {
|
|
ctx = session.ContextWithOutbound(ctx, &session.Outbound{
|
|
Target: dest,
|
|
})
|
|
}
|
|
}
|
|
ctx = session.ContextWithInbound(ctx, &session.Inbound{
|
|
Source: net.DestinationFromAddr(conn.RemoteAddr()),
|
|
Gateway: net.TCPDestination(w.address, w.port),
|
|
Tag: w.tag,
|
|
})
|
|
content := new(session.Content)
|
|
if w.sniffingConfig != nil {
|
|
content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
|
|
content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
|
|
content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
|
|
}
|
|
ctx = session.ContextWithContent(ctx, content)
|
|
if w.uplinkCounter != nil || w.downlinkCounter != nil {
|
|
conn = &internet.StatCouterConnection{
|
|
Connection: conn,
|
|
ReadCounter: w.uplinkCounter,
|
|
WriteCounter: w.downlinkCounter,
|
|
}
|
|
}
|
|
if err := w.proxy.Process(ctx, net.Network_TCP, conn, w.dispatcher); err != nil {
|
|
newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
cancel()
|
|
if err := conn.Close(); err != nil {
|
|
newError("failed to close connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
}
|
|
|
|
func (w *tcpWorker) Proxy() proxy.Inbound {
|
|
return w.proxy
|
|
}
|
|
|
|
func (w *tcpWorker) Start() error {
|
|
ctx := context.Background()
|
|
hub, err := internet.ListenTCP(ctx, w.address, w.port, w.stream, func(conn internet.Connection) {
|
|
go w.callback(conn)
|
|
})
|
|
if err != nil {
|
|
return newError("failed to listen TCP on ", w.port).AtWarning().Base(err)
|
|
}
|
|
w.hub = hub
|
|
return nil
|
|
}
|
|
|
|
func (w *tcpWorker) Close() error {
|
|
var errors []interface{}
|
|
if w.hub != nil {
|
|
if err := common.Close(w.hub); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
if err := common.Close(w.proxy); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
}
|
|
if len(errors) > 0 {
|
|
return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (w *tcpWorker) Port() net.Port {
|
|
return w.port
|
|
}
|
|
|
|
type udpConn struct {
|
|
lastActivityTime int64 // in seconds
|
|
reader buf.Reader
|
|
writer buf.Writer
|
|
output func([]byte) (int, error)
|
|
remote net.Addr
|
|
local net.Addr
|
|
done *done.Instance
|
|
uplink stats.Counter
|
|
downlink stats.Counter
|
|
}
|
|
|
|
func (c *udpConn) updateActivity() {
|
|
atomic.StoreInt64(&c.lastActivityTime, time.Now().Unix())
|
|
}
|
|
|
|
// ReadMultiBuffer implements buf.Reader
|
|
func (c *udpConn) ReadMultiBuffer() (buf.MultiBuffer, error) {
|
|
mb, err := c.reader.ReadMultiBuffer()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
c.updateActivity()
|
|
|
|
if c.uplink != nil {
|
|
c.uplink.Add(int64(mb.Len()))
|
|
}
|
|
|
|
return mb, nil
|
|
}
|
|
|
|
func (c *udpConn) Read(buf []byte) (int, error) {
|
|
panic("not implemented")
|
|
}
|
|
|
|
// Write implements io.Writer.
|
|
func (c *udpConn) Write(buf []byte) (int, error) {
|
|
n, err := c.output(buf)
|
|
if c.downlink != nil {
|
|
c.downlink.Add(int64(n))
|
|
}
|
|
if err == nil {
|
|
c.updateActivity()
|
|
}
|
|
return n, err
|
|
}
|
|
|
|
func (c *udpConn) Close() error {
|
|
common.Must(c.done.Close())
|
|
common.Must(common.Close(c.writer))
|
|
return nil
|
|
}
|
|
|
|
func (c *udpConn) RemoteAddr() net.Addr {
|
|
return c.remote
|
|
}
|
|
|
|
func (c *udpConn) LocalAddr() net.Addr {
|
|
return c.local
|
|
}
|
|
|
|
func (*udpConn) SetDeadline(time.Time) error {
|
|
return nil
|
|
}
|
|
|
|
func (*udpConn) SetReadDeadline(time.Time) error {
|
|
return nil
|
|
}
|
|
|
|
func (*udpConn) SetWriteDeadline(time.Time) error {
|
|
return nil
|
|
}
|
|
|
|
type connID struct {
|
|
src net.Destination
|
|
dest net.Destination
|
|
}
|
|
|
|
type udpWorker struct {
|
|
sync.RWMutex
|
|
|
|
proxy proxy.Inbound
|
|
hub *udp.Hub
|
|
address net.Address
|
|
port net.Port
|
|
tag string
|
|
stream *internet.MemoryStreamConfig
|
|
dispatcher routing.Dispatcher
|
|
sniffingConfig *proxyman.SniffingConfig
|
|
uplinkCounter stats.Counter
|
|
downlinkCounter stats.Counter
|
|
|
|
checker *task.Periodic
|
|
activeConn map[connID]*udpConn
|
|
|
|
ctx context.Context
|
|
}
|
|
|
|
func (w *udpWorker) getConnection(id connID) (*udpConn, bool) {
|
|
w.Lock()
|
|
defer w.Unlock()
|
|
|
|
if conn, found := w.activeConn[id]; found && !conn.done.Done() {
|
|
return conn, true
|
|
}
|
|
|
|
pReader, pWriter := pipe.New(pipe.DiscardOverflow(), pipe.WithSizeLimit(16*1024))
|
|
conn := &udpConn{
|
|
reader: pReader,
|
|
writer: pWriter,
|
|
output: func(b []byte) (int, error) {
|
|
return w.hub.WriteTo(b, id.src)
|
|
},
|
|
remote: &net.UDPAddr{
|
|
IP: id.src.Address.IP(),
|
|
Port: int(id.src.Port),
|
|
},
|
|
local: &net.UDPAddr{
|
|
IP: w.address.IP(),
|
|
Port: int(w.port),
|
|
},
|
|
done: done.New(),
|
|
uplink: w.uplinkCounter,
|
|
downlink: w.downlinkCounter,
|
|
}
|
|
w.activeConn[id] = conn
|
|
|
|
conn.updateActivity()
|
|
return conn, false
|
|
}
|
|
|
|
func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest net.Destination) {
|
|
id := connID{
|
|
src: source,
|
|
}
|
|
if originalDest.IsValid() {
|
|
id.dest = originalDest
|
|
}
|
|
conn, existing := w.getConnection(id)
|
|
|
|
// payload will be discarded in pipe is full.
|
|
conn.writer.WriteMultiBuffer(buf.MultiBuffer{b})
|
|
|
|
if !existing {
|
|
common.Must(w.checker.Start())
|
|
|
|
go func() {
|
|
ctx := w.ctx
|
|
sid := session.NewID()
|
|
ctx = session.ContextWithID(ctx, sid)
|
|
|
|
if originalDest.IsValid() {
|
|
ctx = session.ContextWithOutbound(ctx, &session.Outbound{
|
|
Target: originalDest,
|
|
})
|
|
}
|
|
ctx = session.ContextWithInbound(ctx, &session.Inbound{
|
|
Source: source,
|
|
Gateway: net.UDPDestination(w.address, w.port),
|
|
Tag: w.tag,
|
|
})
|
|
content := new(session.Content)
|
|
if w.sniffingConfig != nil {
|
|
content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
|
|
content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
|
|
content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
|
|
}
|
|
ctx = session.ContextWithContent(ctx, content)
|
|
if err := w.proxy.Process(ctx, net.Network_UDP, conn, w.dispatcher); err != nil {
|
|
newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
conn.Close()
|
|
w.removeConn(id)
|
|
}()
|
|
}
|
|
}
|
|
|
|
func (w *udpWorker) removeConn(id connID) {
|
|
w.Lock()
|
|
delete(w.activeConn, id)
|
|
w.Unlock()
|
|
}
|
|
|
|
func (w *udpWorker) handlePackets() {
|
|
receive := w.hub.Receive()
|
|
for payload := range receive {
|
|
w.callback(payload.Payload, payload.Source, payload.Target)
|
|
}
|
|
}
|
|
|
|
func (w *udpWorker) clean() error {
|
|
nowSec := time.Now().Unix()
|
|
w.Lock()
|
|
defer w.Unlock()
|
|
|
|
if len(w.activeConn) == 0 {
|
|
return newError("no more connections. stopping...")
|
|
}
|
|
|
|
for addr, conn := range w.activeConn {
|
|
if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 8 { // TODO Timeout too small
|
|
delete(w.activeConn, addr)
|
|
conn.Close()
|
|
}
|
|
}
|
|
|
|
if len(w.activeConn) == 0 {
|
|
w.activeConn = make(map[connID]*udpConn, 16)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (w *udpWorker) Start() error {
|
|
w.activeConn = make(map[connID]*udpConn, 16)
|
|
ctx := context.Background()
|
|
h, err := udp.ListenUDP(ctx, w.address, w.port, w.stream, udp.HubCapacity(256))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
w.checker = &task.Periodic{
|
|
Interval: time.Second * 16,
|
|
Execute: w.clean,
|
|
}
|
|
|
|
w.hub = h
|
|
go w.handlePackets()
|
|
return nil
|
|
}
|
|
|
|
func (w *udpWorker) Close() error {
|
|
w.Lock()
|
|
defer w.Unlock()
|
|
|
|
var errors []interface{}
|
|
|
|
if w.hub != nil {
|
|
if err := w.hub.Close(); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
}
|
|
|
|
if w.checker != nil {
|
|
if err := w.checker.Close(); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
}
|
|
|
|
if err := common.Close(w.proxy); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
|
|
if len(errors) > 0 {
|
|
return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (w *udpWorker) Port() net.Port {
|
|
return w.port
|
|
}
|
|
|
|
func (w *udpWorker) Proxy() proxy.Inbound {
|
|
return w.proxy
|
|
}
|
|
|
|
type dsWorker struct {
|
|
address net.Address
|
|
proxy proxy.Inbound
|
|
stream *internet.MemoryStreamConfig
|
|
tag string
|
|
dispatcher routing.Dispatcher
|
|
sniffingConfig *proxyman.SniffingConfig
|
|
uplinkCounter stats.Counter
|
|
downlinkCounter stats.Counter
|
|
|
|
hub internet.Listener
|
|
|
|
ctx context.Context
|
|
}
|
|
|
|
func (w *dsWorker) callback(conn internet.Connection) {
|
|
ctx, cancel := context.WithCancel(w.ctx)
|
|
sid := session.NewID()
|
|
ctx = session.ContextWithID(ctx, sid)
|
|
|
|
ctx = session.ContextWithInbound(ctx, &session.Inbound{
|
|
Source: net.DestinationFromAddr(conn.RemoteAddr()),
|
|
Gateway: net.UnixDestination(w.address),
|
|
Tag: w.tag,
|
|
})
|
|
content := new(session.Content)
|
|
if w.sniffingConfig != nil {
|
|
content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
|
|
content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
|
|
content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
|
|
}
|
|
ctx = session.ContextWithContent(ctx, content)
|
|
if w.uplinkCounter != nil || w.downlinkCounter != nil {
|
|
conn = &internet.StatCouterConnection{
|
|
Connection: conn,
|
|
ReadCounter: w.uplinkCounter,
|
|
WriteCounter: w.downlinkCounter,
|
|
}
|
|
}
|
|
if err := w.proxy.Process(ctx, net.Network_UNIX, conn, w.dispatcher); err != nil {
|
|
newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
cancel()
|
|
if err := conn.Close(); err != nil {
|
|
newError("failed to close connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
}
|
|
|
|
func (w *dsWorker) Proxy() proxy.Inbound {
|
|
return w.proxy
|
|
}
|
|
|
|
func (w *dsWorker) Port() net.Port {
|
|
return net.Port(0)
|
|
}
|
|
func (w *dsWorker) Start() error {
|
|
ctx := context.Background()
|
|
hub, err := internet.ListenUnix(ctx, w.address, w.stream, func(conn internet.Connection) {
|
|
go w.callback(conn)
|
|
})
|
|
if err != nil {
|
|
return newError("failed to listen Unix Domain Socket on ", w.address).AtWarning().Base(err)
|
|
}
|
|
w.hub = hub
|
|
return nil
|
|
}
|
|
|
|
func (w *dsWorker) Close() error {
|
|
var errors []interface{}
|
|
if w.hub != nil {
|
|
if err := common.Close(w.hub); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
if err := common.Close(w.proxy); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
}
|
|
if len(errors) > 0 {
|
|
return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
|
|
}
|
|
|
|
return nil
|
|
}
|