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Add PROXY Protocol support for freedom outbound

pull/2277/head
Iain Lau 10 months ago committed by yuhan6665
parent
b56917fde5
commit
3a99520370
5 changed files with 80 additions and 22 deletions
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  1. 29
      common/net/destination.go
  2. 4
      infra/conf/freedom.go
  3. 53
      proxy/freedom/config.pb.go
  4. 3
      proxy/freedom/config.proto
  5. 13
      proxy/freedom/freedom.go

29
common/net/destination.go
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@ -97,6 +97,35 @@ func (d Destination) NetAddr() string {
return addr
}
// RawNetAddr converts a net.Addr from its Destination presentation.
func (d Destination) RawNetAddr() net.Addr {
var addr net.Addr
switch d.Network {
case Network_TCP:
if d.Address.Family().IsIP() {
addr = &net.TCPAddr{
IP: d.Address.IP(),
Port: int(d.Port),
}
}
case Network_UDP:
if d.Address.Family().IsIP() {
addr = &net.UDPAddr{
IP: d.Address.IP(),
Port: int(d.Port),
}
}
case Network_UNIX:
if d.Address.Family().IsDomain() {
addr = &net.UnixAddr{
Name: d.Address.String(),
Net: d.Network.SystemString(),
}
}
}
return addr
}
// String returns the strings form of this Destination.
func (d Destination) String() string {
prefix := "unknown:"

4
infra/conf/freedom.go
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@ -17,6 +17,7 @@ type FreedomConfig struct {
Redirect string `json:"redirect"`
UserLevel uint32 `json:"userLevel"`
Fragment *Fragment `json:"fragment"`
ProxyProtocol uint32 `json:"proxyProtocol"`
}
type Fragment struct {
@ -165,5 +166,8 @@ func (c *FreedomConfig) Build() (proto.Message, error) {
config.DestinationOverride.Server.Address = v2net.NewIPOrDomain(v2net.ParseAddress(host))
}
}
if c.ProxyProtocol > 0 && c.ProxyProtocol <= 2 {
config.ProxyProtocol = c.ProxyProtocol
}
return config, nil
}

53
proxy/freedom/config.pb.go
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@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.31.0
// protoc v4.23.1
// protoc-gen-go v1.32.0
// protoc v4.25.2
// source: proxy/freedom/config.proto
package freedom
@ -239,6 +239,7 @@ type Config struct {
DestinationOverride *DestinationOverride `protobuf:"bytes,3,opt,name=destination_override,json=destinationOverride,proto3" json:"destination_override,omitempty"`
UserLevel uint32 `protobuf:"varint,4,opt,name=user_level,json=userLevel,proto3" json:"user_level,omitempty"`
Fragment *Fragment `protobuf:"bytes,5,opt,name=fragment,proto3" json:"fragment,omitempty"`
ProxyProtocol uint32 `protobuf:"varint,6,opt,name=proxy_protocol,json=proxyProtocol,proto3" json:"proxy_protocol,omitempty"`
}
func (x *Config) Reset() {
@ -309,6 +310,13 @@ func (x *Config) GetFragment() *Fragment {
return nil
}
func (x *Config) GetProxyProtocol() uint32 {
if x != nil {
return x.ProxyProtocol
}
return 0
}
var File_proxy_freedom_config_proto protoreflect.FileDescriptor
var file_proxy_freedom_config_proto_rawDesc = []byte{
@ -335,7 +343,7 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
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@ -354,24 +362,27 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
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}
var (

3
proxy/freedom/config.proto
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@ -39,5 +39,6 @@ message Config {
uint32 timeout = 2 [deprecated = true];
DestinationOverride destination_override = 3;
uint32 user_level = 4;
Fragment fragment = 5;
Fragment fragment = 5;
uint32 proxy_protocol = 6;
}

13
proxy/freedom/freedom.go
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@ -9,6 +9,7 @@ import (
"math/big"
"time"
"github.com/pires/go-proxyproto"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/common/dice"
@ -152,6 +153,18 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
if err != nil {
return err
}
if h.config.ProxyProtocol > 0 && h.config.ProxyProtocol <= 2 {
version := byte(h.config.ProxyProtocol)
srcAddr := inbound.Source.RawNetAddr()
dstAddr := rawConn.RemoteAddr()
header := proxyproto.HeaderProxyFromAddrs(version, srcAddr, dstAddr)
if _, err = header.WriteTo(rawConn); err != nil {
rawConn.Close()
return err
}
}
conn = rawConn
return nil
})

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