785 lines
17 KiB
Go
785 lines
17 KiB
Go
package proxy
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import (
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"fmt"
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"golang.org/x/exp/slices"
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"net"
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"sort"
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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/component/ebpf"
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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/autoredir"
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"github.com/Dreamacro/clash/listener/http"
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"github.com/Dreamacro/clash/listener/inner"
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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/sing_shadowsocks"
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"github.com/Dreamacro/clash/listener/sing_tun"
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"github.com/Dreamacro/clash/listener/sing_vmess"
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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/tunnel"
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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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inboundTfo = false
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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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tunLister *sing_tun.Listener
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shadowSocksListener C.AdvanceListener
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vmessListener *sing_vmess.Listener
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tcpTunListener *tunnel.Listener
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udpTunListener *tunnel.UdpListener
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autoRedirListener *autoredir.Listener
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autoRedirProgram *ebpf.TcEBpfProgram
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tcProgram *ebpf.TcEBpfProgram
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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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ssMux sync.Mutex
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vmessMux sync.Mutex
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tcpTunMux sync.Mutex
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udpTunMux sync.Mutex
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autoRedirMux sync.Mutex
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tcMux sync.Mutex
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LastTunConf config.Tun
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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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ShadowSocksConfig string `json:"ss-config"`
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VmessConfig string `json:"vmess-config"`
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TcpTunConfig string `json:"tcptun-config"`
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UdpTunConfig string `json:"udptun-config"`
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}
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func GetTunConf() config.Tun {
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if tunLister == nil {
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return config.Tun{
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Enable: false,
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}
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}
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return tunLister.Config()
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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 SetBindAddress(host string) {
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bindAddress = host
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}
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func SetInboundTfo(itfo bool) {
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inboundTfo = itfo
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}
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func NewInner(tcpIn chan<- C.ConnContext) {
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inner.New(tcpIn)
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}
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func ReCreateHTTP(port int, tcpIn chan<- C.ConnContext) {
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httpMux.Lock()
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defer httpMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start HTTP server error: %s", err.Error())
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}
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}()
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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
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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
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}
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httpListener, err = http.New(addr, inboundTfo, tcpIn)
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if err != nil {
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log.Errorln("Start HTTP server error: %s", err.Error())
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return
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}
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log.Infoln("HTTP proxy listening at: %s", httpListener.Address())
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}
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func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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socksMux.Lock()
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defer socksMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start SOCKS server error: %s", err.Error())
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}
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}()
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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
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}
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if portIsZero(addr) {
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return
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}
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tcpListener, err := socks.New(addr, inboundTfo, tcpIn)
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if err != nil {
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return
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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
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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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}
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func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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redirMux.Lock()
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defer redirMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start Redir server error: %s", err.Error())
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}
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}()
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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
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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
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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
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}
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redirListener, err = redir.New(addr, tcpIn)
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if err != nil {
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return
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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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}
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func ReCreateShadowSocks(shadowSocksConfig string, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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ssMux.Lock()
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defer ssMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start ShadowSocks server error: %s", err.Error())
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}
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}()
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shouldIgnore := false
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if shadowSocksListener != nil {
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if shadowSocksListener.Config() != shadowSocksConfig {
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shadowSocksListener.Close()
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shadowSocksListener = nil
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} else {
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shouldIgnore = true
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}
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}
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if shouldIgnore {
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return
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}
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if len(shadowSocksConfig) == 0 {
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return
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}
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listener, err := sing_shadowsocks.New(shadowSocksConfig, tcpIn, udpIn)
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if err != nil {
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return
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}
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shadowSocksListener = listener
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return
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}
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func ReCreateVmess(vmessConfig string, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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vmessMux.Lock()
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defer vmessMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start Vmess server error: %s", err.Error())
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}
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}()
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shouldIgnore := false
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if vmessListener != nil {
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if vmessListener.Config() != vmessConfig {
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vmessListener.Close()
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vmessListener = nil
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} else {
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shouldIgnore = true
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}
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}
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if shouldIgnore {
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return
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}
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if len(vmessConfig) == 0 {
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return
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}
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listener, err := sing_vmess.New(vmessConfig, tcpIn, udpIn)
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if err != nil {
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return
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}
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vmessListener = listener
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return
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}
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func ReCreateTcpTun(config string, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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tcpTunMux.Lock()
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defer tcpTunMux.Unlock()
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shouldIgnore := false
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start TcpTun server error: %s", err.Error())
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}
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}()
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if tcpTunListener != nil {
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if tcpTunListener.Config() != config {
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tcpTunListener.Close()
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tcpTunListener = nil
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} else {
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shouldIgnore = true
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}
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}
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if shouldIgnore {
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return
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}
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tcpListener, err := tunnel.New(config, tcpIn)
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if err != nil {
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return
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}
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tcpTunListener = tcpListener
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return
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}
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func ReCreateUdpTun(config string, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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udpTunMux.Lock()
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defer udpTunMux.Unlock()
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shouldIgnore := false
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start UdpTun server error: %s", err.Error())
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}
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}()
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if udpTunListener != nil {
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if udpTunListener.Config() != config {
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udpTunListener.Close()
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udpTunListener = nil
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} else {
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shouldIgnore = true
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}
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}
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if shouldIgnore {
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return
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}
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udpListener, err := tunnel.NewUdp(config, udpIn)
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if err != nil {
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return
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}
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udpTunListener = udpListener
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return
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}
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func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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tproxyMux.Lock()
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defer tproxyMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start TProxy server error: %s", err.Error())
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}
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}()
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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
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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
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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
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}
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tproxyListener, err = tproxy.New(addr, tcpIn)
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if err != nil {
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return
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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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}
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func ReCreateMixed(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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mixedMux.Lock()
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defer mixedMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start Mixed(http+socks) server error: %s", err.Error())
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}
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}()
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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
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}
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if portIsZero(addr) {
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return
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}
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mixedListener, err = mixed.New(addr, inboundTfo, tcpIn)
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if err != nil {
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return
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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
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}
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log.Infoln("Mixed(http+socks) proxy listening at: %s", mixedListener.Address())
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}
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func ReCreateTun(tunConf config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter) {
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tunMux.Lock()
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defer func() {
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LastTunConf = tunConf
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tunMux.Unlock()
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}()
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var err error
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defer func() {
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if err != nil {
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log.Errorln("Start TUN listening error: %s", err.Error())
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Cleanup(false)
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}
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}()
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if !hasTunConfigChange(&tunConf) {
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if tunLister != nil {
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tunLister.FlushDefaultInterface()
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}
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return
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}
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Cleanup(true)
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if !tunConf.Enable {
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return
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}
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tunLister, err = sing_tun.New(tunConf, tcpIn, udpIn)
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}
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func ReCreateRedirToTun(ifaceNames []string) {
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tcMux.Lock()
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defer tcMux.Unlock()
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nicArr := ifaceNames
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slices.Sort(nicArr)
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nicArr = slices.Compact(nicArr)
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if tcProgram != nil {
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tcProgram.Close()
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tcProgram = nil
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}
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if len(nicArr) == 0 {
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return
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}
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tunConf := GetTunConf()
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if !tunConf.Enable {
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return
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}
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program, err := ebpf.NewTcEBpfProgram(nicArr, tunConf.Device)
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if err != nil {
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log.Errorln("Attached tc ebpf program error: %v", err)
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return
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}
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tcProgram = program
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log.Infoln("Attached tc ebpf program to interfaces %v", tcProgram.RawNICs())
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}
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func ReCreateAutoRedir(ifaceNames []string, tcpIn chan<- C.ConnContext, _ chan<- *inbound.PacketAdapter) {
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autoRedirMux.Lock()
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defer autoRedirMux.Unlock()
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var err error
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defer func() {
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if err != nil {
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if autoRedirListener != nil {
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_ = autoRedirListener.Close()
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autoRedirListener = nil
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}
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if autoRedirProgram != nil {
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autoRedirProgram.Close()
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autoRedirProgram = nil
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}
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log.Errorln("Start auto redirect server error: %s", err.Error())
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}
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}()
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nicArr := ifaceNames
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slices.Sort(nicArr)
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nicArr = slices.Compact(nicArr)
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if autoRedirListener != nil && autoRedirProgram != nil {
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_ = autoRedirListener.Close()
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autoRedirProgram.Close()
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autoRedirListener = nil
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autoRedirProgram = nil
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}
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if len(nicArr) == 0 {
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return
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}
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defaultRouteInterfaceName, err := ebpf.GetAutoDetectInterface()
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if err != nil {
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return
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}
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addr := genAddr("*", C.TcpAutoRedirPort, true)
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autoRedirListener, err = autoredir.New(addr, tcpIn)
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if err != nil {
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|
return
|
|
}
|
|
|
|
autoRedirProgram, err = ebpf.NewRedirEBpfProgram(nicArr, autoRedirListener.TCPAddr().Port(), defaultRouteInterfaceName)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
autoRedirListener.SetLookupFunc(autoRedirProgram.Lookup)
|
|
|
|
log.Infoln("Auto redirect proxy listening at: %s, attached tc ebpf program to interfaces %v", autoRedirListener.Address(), autoRedirProgram.RawNICs())
|
|
}
|
|
|
|
// GetPorts return the ports of proxy servers
|
|
func GetPorts() *Ports {
|
|
ports := &Ports{}
|
|
|
|
if httpListener != nil {
|
|
_, portStr, _ := net.SplitHostPort(httpListener.Address())
|
|
port, _ := strconv.Atoi(portStr)
|
|
ports.Port = port
|
|
}
|
|
|
|
if socksListener != nil {
|
|
_, portStr, _ := net.SplitHostPort(socksListener.Address())
|
|
port, _ := strconv.Atoi(portStr)
|
|
ports.SocksPort = port
|
|
}
|
|
|
|
if redirListener != nil {
|
|
_, portStr, _ := net.SplitHostPort(redirListener.Address())
|
|
port, _ := strconv.Atoi(portStr)
|
|
ports.RedirPort = port
|
|
}
|
|
|
|
if tproxyListener != nil {
|
|
_, portStr, _ := net.SplitHostPort(tproxyListener.Address())
|
|
port, _ := strconv.Atoi(portStr)
|
|
ports.TProxyPort = port
|
|
}
|
|
|
|
if mixedListener != nil {
|
|
_, portStr, _ := net.SplitHostPort(mixedListener.Address())
|
|
port, _ := strconv.Atoi(portStr)
|
|
ports.MixedPort = port
|
|
}
|
|
|
|
if shadowSocksListener != nil {
|
|
ports.ShadowSocksConfig = shadowSocksListener.Config()
|
|
}
|
|
|
|
if vmessListener != nil {
|
|
ports.VmessConfig = vmessListener.Config()
|
|
}
|
|
|
|
if tcpTunListener != nil {
|
|
ports.TcpTunConfig = tcpTunListener.Config()
|
|
}
|
|
|
|
if udpTunListener != nil {
|
|
ports.UdpTunConfig = udpTunListener.Config()
|
|
}
|
|
|
|
return ports
|
|
}
|
|
|
|
func portIsZero(addr string) bool {
|
|
_, port, err := net.SplitHostPort(addr)
|
|
if port == "0" || port == "" || err != nil {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func genAddr(host string, port int, allowLan bool) string {
|
|
if allowLan {
|
|
if host == "*" {
|
|
return fmt.Sprintf(":%d", port)
|
|
}
|
|
return fmt.Sprintf("%s:%d", host, port)
|
|
}
|
|
|
|
return fmt.Sprintf("127.0.0.1:%d", port)
|
|
}
|
|
|
|
func hasTunConfigChange(tunConf *config.Tun) bool {
|
|
if LastTunConf.Enable != tunConf.Enable ||
|
|
LastTunConf.Device != tunConf.Device ||
|
|
LastTunConf.Stack != tunConf.Stack ||
|
|
LastTunConf.AutoRoute != tunConf.AutoRoute ||
|
|
LastTunConf.AutoDetectInterface != tunConf.AutoDetectInterface ||
|
|
LastTunConf.MTU != tunConf.MTU ||
|
|
LastTunConf.StrictRoute != tunConf.StrictRoute ||
|
|
LastTunConf.EndpointIndependentNat != tunConf.EndpointIndependentNat ||
|
|
LastTunConf.UDPTimeout != tunConf.UDPTimeout {
|
|
return true
|
|
}
|
|
|
|
if len(LastTunConf.DNSHijack) != len(tunConf.DNSHijack) {
|
|
return true
|
|
}
|
|
|
|
sort.Slice(tunConf.DNSHijack, func(i, j int) bool {
|
|
return tunConf.DNSHijack[i].Addr().Less(tunConf.DNSHijack[j].Addr())
|
|
})
|
|
|
|
sort.Slice(tunConf.Inet4Address, func(i, j int) bool {
|
|
return tunConf.Inet4Address[i].Build().String() < tunConf.Inet4Address[j].Build().String()
|
|
})
|
|
|
|
sort.Slice(tunConf.Inet6Address, func(i, j int) bool {
|
|
return tunConf.Inet6Address[i].Build().String() < tunConf.Inet6Address[j].Build().String()
|
|
})
|
|
|
|
sort.Slice(tunConf.Inet4RouteAddress, func(i, j int) bool {
|
|
return tunConf.Inet4RouteAddress[i].Build().String() < tunConf.Inet4RouteAddress[j].Build().String()
|
|
})
|
|
|
|
sort.Slice(tunConf.Inet6RouteAddress, func(i, j int) bool {
|
|
return tunConf.Inet6RouteAddress[i].Build().String() < tunConf.Inet6RouteAddress[j].Build().String()
|
|
})
|
|
|
|
sort.Slice(tunConf.IncludeUID, func(i, j int) bool {
|
|
return tunConf.IncludeUID[i] < tunConf.IncludeUID[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.IncludeUIDRange, func(i, j int) bool {
|
|
return tunConf.IncludeUIDRange[i] < tunConf.IncludeUIDRange[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.ExcludeUID, func(i, j int) bool {
|
|
return tunConf.ExcludeUID[i] < tunConf.ExcludeUID[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.ExcludeUIDRange, func(i, j int) bool {
|
|
return tunConf.ExcludeUIDRange[i] < tunConf.ExcludeUIDRange[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.IncludeAndroidUser, func(i, j int) bool {
|
|
return tunConf.IncludeAndroidUser[i] < tunConf.IncludeAndroidUser[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.IncludePackage, func(i, j int) bool {
|
|
return tunConf.IncludePackage[i] < tunConf.IncludePackage[j]
|
|
})
|
|
|
|
sort.Slice(tunConf.ExcludePackage, func(i, j int) bool {
|
|
return tunConf.ExcludePackage[i] < tunConf.ExcludePackage[j]
|
|
})
|
|
|
|
if !slices.Equal(tunConf.DNSHijack, LastTunConf.DNSHijack) ||
|
|
!slices.Equal(tunConf.Inet4Address, LastTunConf.Inet4Address) ||
|
|
!slices.Equal(tunConf.Inet6Address, LastTunConf.Inet6Address) ||
|
|
!slices.Equal(tunConf.Inet4RouteAddress, LastTunConf.Inet4RouteAddress) ||
|
|
!slices.Equal(tunConf.Inet6RouteAddress, LastTunConf.Inet6RouteAddress) ||
|
|
!slices.Equal(tunConf.IncludeUID, LastTunConf.IncludeUID) ||
|
|
!slices.Equal(tunConf.IncludeUIDRange, LastTunConf.IncludeUIDRange) ||
|
|
!slices.Equal(tunConf.ExcludeUID, LastTunConf.ExcludeUID) ||
|
|
!slices.Equal(tunConf.ExcludeUIDRange, LastTunConf.ExcludeUIDRange) ||
|
|
!slices.Equal(tunConf.IncludeAndroidUser, LastTunConf.IncludeAndroidUser) ||
|
|
!slices.Equal(tunConf.IncludePackage, LastTunConf.IncludePackage) ||
|
|
!slices.Equal(tunConf.ExcludePackage, LastTunConf.ExcludePackage) {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func Cleanup(wait bool) {
|
|
if tunLister != nil {
|
|
tunLister.Close()
|
|
tunLister = nil
|
|
}
|
|
LastTunConf = config.Tun{}
|
|
}
|