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Add socks4/4a support

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世界 2021-09-16 14:42:12 +08:00
parent 238bd5d050
commit 77d0419aca
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GPG Key ID: CD109927C34A63C4
4 changed files with 154 additions and 33 deletions
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15
infra/conf/socks.go
View File

@ -2,6 +2,7 @@ package conf
import (
"encoding/json"
"strings"
"github.com/golang/protobuf/proto"
@ -73,11 +74,22 @@ type SocksRemoteConfig struct {
type SocksClientConfig struct {
Servers []*SocksRemoteConfig `json:"servers"`
Version string `json:"version"`
}
func (v *SocksClientConfig) Build() (proto.Message, error) {
config := new(socks.ClientConfig)
config.Server = make([]*protocol.ServerEndpoint, len(v.Servers))
switch strings.ToLower(v.Version) {
case "4":
config.Version = socks.Version_SOCKS4
case "4a":
config.Version = socks.Version_SOCKS4A
case "", "5":
config.Version = socks.Version_SOCKS5
default:
return nil, newError("failed to parse socks server version: ", v.Version).AtError()
}
for idx, serverConfig := range v.Servers {
server := &protocol.ServerEndpoint{
Address: serverConfig.Address.Build(),
@ -92,6 +104,9 @@ func (v *SocksClientConfig) Build() (proto.Message, error) {
if err := json.Unmarshal(rawUser, account); err != nil {
return nil, newError("failed to parse socks account").Base(err).AtError()
}
if config.Version != socks.Version_SOCKS5 && account.Password != "" {
return nil, newError("password is only supported in socks5").AtError()
}
user.Account = serial.ToTypedMessage(account.Build())
server.User = append(server.User, user)
}

38
proxy/socks/client.go
View File

@ -15,6 +15,7 @@ import (
"github.com/xtls/xray-core/common/signal"
"github.com/xtls/xray-core/common/task"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/features/dns"
"github.com/xtls/xray-core/features/policy"
"github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet"
@ -24,6 +25,8 @@ import (
type Client struct {
serverPicker protocol.ServerPicker
policyManager policy.Manager
version Version
dns dns.Client
}
// NewClient create a new Socks5 client based on the given config.
@ -41,10 +44,16 @@ func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
}
v := core.MustFromContext(ctx)
return &Client{
c := &Client{
serverPicker: protocol.NewRoundRobinServerPicker(serverList),
policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
}, nil
version: config.Version,
}
if config.Version == Version_SOCKS4 {
c.dns = v.GetFeature(dns.ClientType()).(dns.Client)
}
return c, nil
}
// Process implements proxy.Outbound.Process.
@ -91,6 +100,31 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
Address: destination.Address,
Port: destination.Port,
}
switch c.version {
case Version_SOCKS4:
if request.Address.Family().IsDomain() {
ips, err := c.dns.LookupIP(request.Address.Domain(), dns.IPOption{
IPv4Enable: true,
})
if err != nil {
return err
} else if len(ips) == 0 {
return dns.ErrEmptyResponse
}
request.Address = net.IPAddress(ips[0])
}
fallthrough
case Version_SOCKS4A:
request.Version = socks4Version
if destination.Network == net.Network_UDP {
return newError("udp is not supported in socks4")
} else if destination.Address.Family().IsIPv6() {
return newError("ipv6 is not supported in socks4")
}
}
if destination.Network == net.Network_UDP {
request.Command = protocol.RequestCommandUDP
}

127
proxy/socks/config.pb.go
View File

@ -71,6 +71,55 @@ func (AuthType) EnumDescriptor() ([]byte, []int) {
return file_proxy_socks_config_proto_rawDescGZIP(), []int{0}
}
type Version int32
const (
Version_SOCKS5 Version = 0
Version_SOCKS4 Version = 1
Version_SOCKS4A Version = 2
)
// Enum value maps for Version.
var (
Version_name = map[int32]string{
0: "SOCKS5",
1: "SOCKS4",
2: "SOCKS4A",
}
Version_value = map[string]int32{
"SOCKS5": 0,
"SOCKS4": 1,
"SOCKS4A": 2,
}
)
func (x Version) Enum() *Version {
p := new(Version)
*p = x
return p
}
func (x Version) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Version) Descriptor() protoreflect.EnumDescriptor {
return file_proxy_socks_config_proto_enumTypes[1].Descriptor()
}
func (Version) Type() protoreflect.EnumType {
return &file_proxy_socks_config_proto_enumTypes[1]
}
func (x Version) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Version.Descriptor instead.
func (Version) EnumDescriptor() ([]byte, []int) {
return file_proxy_socks_config_proto_rawDescGZIP(), []int{1}
}
// Account represents a Socks account.
type Account struct {
state protoimpl.MessageState
@ -224,7 +273,8 @@ type ClientConfig struct {
unknownFields protoimpl.UnknownFields
// Sever is a list of Socks server addresses.
Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
Version Version `protobuf:"varint,2,opt,name=version,proto3,enum=xray.proxy.socks.Version" json:"version,omitempty"`
}
func (x *ClientConfig) Reset() {
@ -266,6 +316,13 @@ func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
return nil
}
func (x *ClientConfig) GetVersion() Version {
if x != nil {
return x.Version
}
return Version_SOCKS5
}
var File_proxy_socks_config_proto protoreflect.FileDescriptor
var file_proxy_socks_config_proto_rawDesc = []byte{
@ -302,20 +359,26 @@ var file_proxy_socks_config_proto_rawDesc = []byte{
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}
var (
@ -330,27 +393,29 @@ func file_proxy_socks_config_proto_rawDescGZIP() []byte {
return file_proxy_socks_config_proto_rawDescData
}
var file_proxy_socks_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_proxy_socks_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
var file_proxy_socks_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
var file_proxy_socks_config_proto_goTypes = []interface{}{
(AuthType)(0), // 0: xray.proxy.socks.AuthType
(*Account)(nil), // 1: xray.proxy.socks.Account
(*ServerConfig)(nil), // 2: xray.proxy.socks.ServerConfig
(*ClientConfig)(nil), // 3: xray.proxy.socks.ClientConfig
nil, // 4: xray.proxy.socks.ServerConfig.AccountsEntry
(*net.IPOrDomain)(nil), // 5: xray.common.net.IPOrDomain
(*protocol.ServerEndpoint)(nil), // 6: xray.common.protocol.ServerEndpoint
(Version)(0), // 1: xray.proxy.socks.Version
(*Account)(nil), // 2: xray.proxy.socks.Account
(*ServerConfig)(nil), // 3: xray.proxy.socks.ServerConfig
(*ClientConfig)(nil), // 4: xray.proxy.socks.ClientConfig
nil, // 5: xray.proxy.socks.ServerConfig.AccountsEntry
(*net.IPOrDomain)(nil), // 6: xray.common.net.IPOrDomain
(*protocol.ServerEndpoint)(nil), // 7: xray.common.protocol.ServerEndpoint
}
var file_proxy_socks_config_proto_depIdxs = []int32{
0, // 0: xray.proxy.socks.ServerConfig.auth_type:type_name -> xray.proxy.socks.AuthType
4, // 1: xray.proxy.socks.ServerConfig.accounts:type_name -> xray.proxy.socks.ServerConfig.AccountsEntry
5, // 2: xray.proxy.socks.ServerConfig.address:type_name -> xray.common.net.IPOrDomain
6, // 3: xray.proxy.socks.ClientConfig.server:type_name -> xray.common.protocol.ServerEndpoint
4, // [4:4] is the sub-list for method output_type
4, // [4:4] is the sub-list for method input_type
4, // [4:4] is the sub-list for extension type_name
4, // [4:4] is the sub-list for extension extendee
0, // [0:4] is the sub-list for field type_name
5, // 1: xray.proxy.socks.ServerConfig.accounts:type_name -> xray.proxy.socks.ServerConfig.AccountsEntry
6, // 2: xray.proxy.socks.ServerConfig.address:type_name -> xray.common.net.IPOrDomain
7, // 3: xray.proxy.socks.ClientConfig.server:type_name -> xray.common.protocol.ServerEndpoint
1, // 4: xray.proxy.socks.ClientConfig.version:type_name -> xray.proxy.socks.Version
5, // [5:5] is the sub-list for method output_type
5, // [5:5] is the sub-list for method input_type
5, // [5:5] is the sub-list for extension type_name
5, // [5:5] is the sub-list for extension extendee
0, // [0:5] is the sub-list for field type_name
}
func init() { file_proxy_socks_config_proto_init() }
@ -401,7 +466,7 @@ func file_proxy_socks_config_proto_init() {
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_proxy_socks_config_proto_rawDesc,
NumEnums: 1,
NumEnums: 2,
NumMessages: 4,
NumExtensions: 0,
NumServices: 0,

7
proxy/socks/config.proto
View File

@ -23,6 +23,12 @@ enum AuthType {
PASSWORD = 1;
}
enum Version {
SOCKS5 = 0;
SOCKS4 = 1;
SOCKS4A = 2;
}
// ServerConfig is the protobuf config for Socks server.
message ServerConfig {
AuthType auth_type = 1;
@ -37,4 +43,5 @@ message ServerConfig {
message ClientConfig {
// Sever is a list of Socks server addresses.
repeated xray.common.protocol.ServerEndpoint server = 1;
Version version = 2;
}