378 lines
7.4 KiB
Go
378 lines
7.4 KiB
Go
package proxy
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import (
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"fmt"
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"net"
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"runtime"
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"strconv"
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"sync"
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"github.com/Dreamacro/clash/adapter/inbound"
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"github.com/Dreamacro/clash/config"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/listener/http"
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"github.com/Dreamacro/clash/listener/mixed"
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"github.com/Dreamacro/clash/listener/redir"
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"github.com/Dreamacro/clash/listener/socks"
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"github.com/Dreamacro/clash/listener/tproxy"
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"github.com/Dreamacro/clash/listener/tun"
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"github.com/Dreamacro/clash/listener/tun/ipstack"
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"github.com/Dreamacro/clash/log"
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)
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var (
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allowLan = false
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bindAddress = "*"
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socksListener *socks.Listener
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socksUDPListener *socks.UDPListener
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httpListener *http.Listener
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redirListener *redir.Listener
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redirUDPListener *tproxy.UDPListener
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tproxyListener *tproxy.Listener
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tproxyUDPListener *tproxy.UDPListener
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mixedListener *mixed.Listener
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mixedUDPLister *socks.UDPListener
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tunAdapter ipstack.TunAdapter
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// lock for recreate function
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socksMux sync.Mutex
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httpMux sync.Mutex
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redirMux sync.Mutex
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tproxyMux sync.Mutex
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mixedMux sync.Mutex
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tunMux sync.Mutex
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)
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type Ports struct {
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Port int `json:"port"`
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SocksPort int `json:"socks-port"`
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RedirPort int `json:"redir-port"`
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TProxyPort int `json:"tproxy-port"`
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MixedPort int `json:"mixed-port"`
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}
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func AllowLan() bool {
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return allowLan
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}
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func BindAddress() string {
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return bindAddress
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}
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func SetAllowLan(al bool) {
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allowLan = al
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}
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func Tun() config.Tun {
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if tunAdapter == nil {
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return config.Tun{}
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}
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return config.Tun{
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Enable: true,
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Stack: tunAdapter.Stack(),
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DNSListen: tunAdapter.DNSListen(),
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AutoRoute: tunAdapter.AutoRoute(),
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}
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}
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func SetBindAddress(host string) {
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bindAddress = host
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}
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func ReCreateHTTP(port int, tcpIn chan<- C.ConnContext) error {
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httpMux.Lock()
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defer httpMux.Unlock()
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addr := genAddr(bindAddress, port, allowLan)
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if httpListener != nil {
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if httpListener.RawAddress() == addr {
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return nil
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}
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httpListener.Close()
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httpListener = nil
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}
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if portIsZero(addr) {
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return nil
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}
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var err error
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httpListener, err = http.New(addr, tcpIn)
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if err != nil {
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return err
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}
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log.Infoln("HTTP proxy listening at: %s", httpListener.Address())
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return nil
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}
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func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) error {
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socksMux.Lock()
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defer socksMux.Unlock()
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addr := genAddr(bindAddress, port, allowLan)
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shouldTCPIgnore := false
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shouldUDPIgnore := false
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if socksListener != nil {
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if socksListener.RawAddress() != addr {
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socksListener.Close()
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socksListener = nil
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} else {
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shouldTCPIgnore = true
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}
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}
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if socksUDPListener != nil {
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if socksUDPListener.RawAddress() != addr {
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socksUDPListener.Close()
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socksUDPListener = nil
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} else {
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shouldUDPIgnore = true
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}
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}
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if shouldTCPIgnore && shouldUDPIgnore {
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return nil
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}
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if portIsZero(addr) {
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return nil
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}
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tcpListener, err := socks.New(addr, tcpIn)
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if err != nil {
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return err
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}
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udpListener, err := socks.NewUDP(addr, udpIn)
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if err != nil {
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tcpListener.Close()
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return err
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}
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socksListener = tcpListener
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socksUDPListener = udpListener
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log.Infoln("SOCKS proxy listening at: %s", socksListener.Address())
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return nil
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}
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func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) error {
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redirMux.Lock()
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defer redirMux.Unlock()
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addr := genAddr(bindAddress, port, allowLan)
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if redirListener != nil {
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if redirListener.RawAddress() == addr {
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return nil
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}
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redirListener.Close()
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redirListener = nil
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}
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if redirUDPListener != nil {
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if redirUDPListener.RawAddress() == addr {
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return nil
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}
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redirUDPListener.Close()
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redirUDPListener = nil
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}
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if portIsZero(addr) {
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return nil
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}
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var err error
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redirListener, err = redir.New(addr, tcpIn)
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if err != nil {
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return err
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}
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redirUDPListener, err = tproxy.NewUDP(addr, udpIn)
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if err != nil {
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log.Warnln("Failed to start Redir UDP Listener: %s", err)
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}
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log.Infoln("Redirect proxy listening at: %s", redirListener.Address())
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return nil
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}
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func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) error {
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tproxyMux.Lock()
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defer tproxyMux.Unlock()
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addr := genAddr(bindAddress, port, allowLan)
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if tproxyListener != nil {
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if tproxyListener.RawAddress() == addr {
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return nil
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}
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tproxyListener.Close()
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tproxyListener = nil
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}
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if tproxyUDPListener != nil {
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if tproxyUDPListener.RawAddress() == addr {
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return nil
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}
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tproxyUDPListener.Close()
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tproxyUDPListener = nil
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}
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if portIsZero(addr) {
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return nil
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}
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var err error
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tproxyListener, err = tproxy.New(addr, tcpIn)
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if err != nil {
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return err
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}
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tproxyUDPListener, err = tproxy.NewUDP(addr, udpIn)
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if err != nil {
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log.Warnln("Failed to start TProxy UDP Listener: %s", err)
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}
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log.Infoln("TProxy server listening at: %s", tproxyListener.Address())
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return nil
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}
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func ReCreateMixed(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) error {
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mixedMux.Lock()
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defer mixedMux.Unlock()
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addr := genAddr(bindAddress, port, allowLan)
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shouldTCPIgnore := false
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shouldUDPIgnore := false
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if mixedListener != nil {
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if mixedListener.RawAddress() != addr {
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mixedListener.Close()
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mixedListener = nil
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} else {
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shouldTCPIgnore = true
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}
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}
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if mixedUDPLister != nil {
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if mixedUDPLister.RawAddress() != addr {
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mixedUDPLister.Close()
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mixedUDPLister = nil
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} else {
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shouldUDPIgnore = true
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}
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}
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if shouldTCPIgnore && shouldUDPIgnore {
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return nil
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}
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if portIsZero(addr) {
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return nil
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}
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var err error
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mixedListener, err = mixed.New(addr, tcpIn)
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if err != nil {
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return err
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}
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mixedUDPLister, err = socks.NewUDP(addr, udpIn)
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if err != nil {
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mixedListener.Close()
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return err
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}
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log.Infoln("Mixed(http+socks) proxy listening at: %s", mixedListener.Address())
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return nil
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}
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func ReCreateTun(conf config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) error {
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tunMux.Lock()
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defer tunMux.Unlock()
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if tunAdapter != nil {
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tunAdapter.Close()
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tunAdapter = nil
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}
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if !conf.Enable {
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return nil
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}
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var err error
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tunAdapter, err = tun.New(conf, tcpIn, udpIn)
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return err
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}
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// GetPorts return the ports of proxy servers
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func GetPorts() *Ports {
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ports := &Ports{}
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if httpListener != nil {
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_, portStr, _ := net.SplitHostPort(httpListener.Address())
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port, _ := strconv.Atoi(portStr)
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ports.Port = port
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}
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if socksListener != nil {
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_, portStr, _ := net.SplitHostPort(socksListener.Address())
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port, _ := strconv.Atoi(portStr)
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ports.SocksPort = port
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}
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if redirListener != nil {
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_, portStr, _ := net.SplitHostPort(redirListener.Address())
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port, _ := strconv.Atoi(portStr)
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ports.RedirPort = port
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}
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if tproxyListener != nil {
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_, portStr, _ := net.SplitHostPort(tproxyListener.Address())
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port, _ := strconv.Atoi(portStr)
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ports.TProxyPort = port
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}
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if mixedListener != nil {
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_, portStr, _ := net.SplitHostPort(mixedListener.Address())
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port, _ := strconv.Atoi(portStr)
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ports.MixedPort = port
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}
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return ports
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}
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func portIsZero(addr string) bool {
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_, port, err := net.SplitHostPort(addr)
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if port == "0" || port == "" || err != nil {
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return true
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}
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return false
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}
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func genAddr(host string, port int, allowLan bool) string {
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if allowLan {
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if host == "*" {
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return fmt.Sprintf(":%d", port)
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}
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return fmt.Sprintf("%s:%d", host, port)
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}
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return fmt.Sprintf("127.0.0.1:%d", port)
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}
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// CleanUp clean up something
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func CleanUp() {
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if runtime.GOOS == "windows" {
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if tunAdapter != nil {
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tunAdapter.Close()
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}
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}
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}
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