mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-22 20:59:19 +02:00
Add "tproxy" option (#1189)
* Add "tproxy" option
Added the function of "MacOS" FreeBSD firewall traffic forwarding and resolving destination address
example:
"inbounds": [
{
"listen": "127.0.0.1",
"port": 1122,
"protocol": "dokodemo-door",
"tag": "dokodemo",
"settings": {
"network": "tcp",
"followRedirect": true,
"userLevel": 0
},
"streamSettings": {
"sockopt": {
"tproxy": "pf"
}
}
}
]
* Add "tproxy" option
Added the function of "MacOS" FreeBSD firewall traffic forwarding and resolving destination address
example:
"inbounds": [
{
"listen": "127.0.0.1",
"port": 1122,
"protocol": "dokodemo-door",
"tag": "dokodemo",
"settings": {
"network": "tcp",
"followRedirect": true,
"userLevel": 0
},
"streamSettings": {
"sockopt": {
"tproxy": "pf"
}
}
}
]
* Add "tproxy" option
Added the function of "MacOS" FreeBSD firewall traffic forwarding and resolving destination address
example:
"inbounds": [
{
"listen": "127.0.0.1",
"port": 1122,
"protocol": "dokodemo-door",
"tag": "dokodemo",
"settings": {
"network": "tcp",
"followRedirect": true,
"userLevel": 0
},
"streamSettings": {
"sockopt": {
"tproxy": "pf"
}
}
}
]
Co-authored-by: Mocking <fanhaiwang0817@gmail.com>
This commit is contained in:
S-Mocking
GitHub
parent
76638d793c
commit
59602db02d
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@ -72,6 +72,13 @@ func (w *tcpWorker) callback(conn stat.Connection) {
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}
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case internet.SocketConfig_TProxy:
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dest = net.DestinationFromAddr(conn.LocalAddr())
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case internet.SocketConfig_PF:
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d, err := net.OriginalDst(conn)
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if err != nil {
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newError("failed to get original destination").Base(err).WriteToLog(session.ExportIDToError(ctx))
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} else {
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dest = d
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}
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}
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if dest.IsValid() {
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ctx = session.ContextWithOutbound(ctx, &session.Outbound{
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@ -0,0 +1,94 @@
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//go:build darwin
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package net
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import (
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"net"
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"os"
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"syscall"
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"unsafe"
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)
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const (
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PfOut = 2
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IOCOut = 0x40000000
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IOCIn = 0x80000000
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IOCInOut = IOCIn | IOCOut
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IOCPARMMask = 0x1FFF
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LEN = 4*16 + 4*4 + 4*1
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// #define _IOC(inout,group,num,len) (inout | ((len & IOCPARMMask) << 16) | ((group) << 8) | (num))
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// #define _IOWR(g,n,t) _IOC(IOCInOut, (g), (n), sizeof(t))
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// #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
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DIOCNATLOOK = IOCInOut | ((LEN & IOCPARMMask) << 16) | ('D' << 8) | 23
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)
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// OriginalDst uses ioctl to read original destination from /dev/pf
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func OriginalDst(conn Conn) (Destination, error) {
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f, err := os.Open("/dev/pf")
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if err != nil {
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return Destination{}, newError("failed to open device /dev/pf").Base(err)
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}
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defer f.Close()
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fd := f.Fd()
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nl := struct { // struct pfioc_natlook
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saddr, daddr, rsaddr, rdaddr [16]byte
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sxport, dxport, rsxport, rdxport [4]byte
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af, proto, protoVariant, direction uint8
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}{
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af: syscall.AF_INET,
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proto: syscall.IPPROTO_TCP,
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direction: PfOut,
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}
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var raIP, laIP net.IP
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var raPort, laPort int
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la := conn.LocalAddr()
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ra := conn.RemoteAddr()
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switch la.(type) {
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case *net.TCPAddr:
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raIP = ra.(*net.TCPAddr).IP
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laIP = la.(*net.TCPAddr).IP
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raPort = ra.(*net.TCPAddr).Port
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laPort = la.(*net.TCPAddr).Port
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case *net.UDPAddr:
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raIP = ra.(*net.UDPAddr).IP
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laIP = la.(*net.UDPAddr).IP
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raPort = ra.(*net.UDPAddr).Port
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laPort = la.(*net.UDPAddr).Port
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}
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if raIP.To4() != nil {
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if laIP.IsUnspecified() {
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laIP = net.ParseIP("127.0.0.1")
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}
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copy(nl.saddr[:net.IPv4len], raIP.To4())
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copy(nl.daddr[:net.IPv4len], laIP.To4())
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}
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if raIP.To16() != nil && raIP.To4() == nil {
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if laIP.IsUnspecified() {
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laIP = net.ParseIP("::1")
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}
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copy(nl.saddr[:], raIP)
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copy(nl.daddr[:], laIP)
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}
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nl.sxport[0], nl.sxport[1] = byte(raPort>>8), byte(raPort)
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nl.dxport[0], nl.dxport[1] = byte(laPort>>8), byte(laPort)
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if _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, fd, DIOCNATLOOK, uintptr(unsafe.Pointer(&nl))); errno != 0 {
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return Destination{}, os.NewSyscallError("ioctl", err)
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}
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odPort := nl.rdxport
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var odIP net.IP
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switch nl.af {
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case syscall.AF_INET:
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odIP = make(net.IP, net.IPv4len)
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copy(odIP, nl.rdaddr[:net.IPv4len])
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case syscall.AF_INET6:
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odIP = make(net.IP, net.IPv6len)
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copy(odIP, nl.rdaddr[:])
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}
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return Destination{
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Address: IPAddress(odIP),
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Port: PortFromBytes(odPort[:2]),
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Network: Network_TCP,
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}, nil
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}
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@ -0,0 +1,8 @@
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//go:build !darwin
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package net
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// OriginalDst uses ioctl to read original destination from /dev/pf
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func OriginalDst(conn Conn) (Destination, error) {
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return Destination{}, newError("This platform is not supported")
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}
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@ -558,6 +558,8 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
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tproxy = internet.SocketConfig_TProxy
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case "redirect":
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tproxy = internet.SocketConfig_Redirect
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case "pf":
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tproxy = internet.SocketConfig_PF
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default:
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tproxy = internet.SocketConfig_Off
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}
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@ -1,7 +1,7 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// versions:
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// protoc-gen-go v1.28.1
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// protoc v3.18.0
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// protoc v3.21.5
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// source: transport/internet/config.proto
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package internet
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@ -140,6 +140,8 @@ const (
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SocketConfig_TProxy SocketConfig_TProxyMode = 1
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// Redirect mode.
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SocketConfig_Redirect SocketConfig_TProxyMode = 2
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// PF mode.
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SocketConfig_PF SocketConfig_TProxyMode = 3
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)
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// Enum value maps for SocketConfig_TProxyMode.
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@ -148,11 +150,13 @@ var (
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0: "Off",
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1: "TProxy",
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2: "Redirect",
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3: "PF",
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}
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SocketConfig_TProxyMode_value = map[string]int32{
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"Off": 0,
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"TProxy": 1,
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"Redirect": 2,
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"PF": 3,
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}
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)
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@ -587,7 +591,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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0x12, 0x30, 0x0a, 0x13, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x4c, 0x61, 0x79,
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0x65, 0x72, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x08, 0x52, 0x13, 0x74,
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0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x6d, 0x61, 0x72, 0x6b, 0x18, 0x01, 0x20, 0x01, 0x28,
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@ -620,27 +624,27 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x12, 0x2d, 0x0a, 0x13, 0x74, 0x63, 0x70, 0x5f, 0x6b, 0x65,
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}
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var (
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@ -74,6 +74,8 @@ message SocketConfig {
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TProxy = 1;
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// Redirect mode.
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Redirect = 2;
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// PF mode.
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PF = 3;
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}
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// TProxy is for enabling TProxy socket option.
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