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Add domain strategy for dns outbound

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This commit is contained in:
hmol233 2021-05-03 21:45:21 +08:00
parent 2e56fe11e1
commit 4a4e160a54
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GPG key ID: D617A9DAB0C992D5
6 changed files with 133 additions and 31 deletions
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6
features/dns/client.go
View file

@ -94,6 +94,12 @@ var (
d.FakeEnable = true
return d
}
LookupFakeOnly = func(d *IPOption) *IPOption {
d.FakeEnable = true
d.IPv4Enable = false
d.IPv6Enable = false
return d
}
LookupNoFake = func(d *IPOption) *IPOption {
d.FakeEnable = false
return d

16
infra/conf/dns_proxy.go
View file

@ -1,15 +1,18 @@
package conf
import (
"strings"
"github.com/golang/protobuf/proto"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/proxy/dns"
)
type DNSOutboundConfig struct {
Network Network `json:"network"`
Address *Address `json:"address"`
Port uint16 `json:"port"`
Network Network `json:"network"`
Address *Address `json:"address"`
Port uint16 `json:"port"`
DomainStrategy string `json:"domainStrategy"`
}
func (c *DNSOutboundConfig) Build() (proto.Message, error) {
@ -22,5 +25,12 @@ func (c *DNSOutboundConfig) Build() (proto.Message, error) {
if c.Address != nil {
config.Server.Address = c.Address.Build()
}
config.DomainStrategy = dns.Config_USE_ALL
switch strings.ToLower(c.DomainStrategy) {
case "useip", "use_ip", "use-ip":
config.DomainStrategy = dns.Config_USE_IP
case "fake", "fakedns":
config.DomainStrategy = dns.Config_USE_FAKE
}
return config, nil
}

1
infra/conf/dns_proxy_test.go
View file

@ -27,6 +27,7 @@ func TestDnsProxyConfig(t *testing.T) {
Address: net.NewIPOrDomain(net.IPAddress([]byte{8, 8, 8, 8})),
Port: 53,
},
DomainStrategy: dns.Config_USE_ALL,
},
},
})

112
proxy/dns/config.pb.go
View file

@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.25.0
// protoc v3.14.0
// protoc v3.15.8
// source: proxy/dns/config.proto
package dns
@ -26,6 +26,55 @@ const (
// of the legacy proto package is being used.
const _ = proto.ProtoPackageIsVersion4
type Config_DomainStrategy int32
const (
Config_USE_ALL Config_DomainStrategy = 0
Config_USE_IP Config_DomainStrategy = 1
Config_USE_FAKE Config_DomainStrategy = 2
)
// Enum value maps for Config_DomainStrategy.
var (
Config_DomainStrategy_name = map[int32]string{
0: "USE_ALL",
1: "USE_IP",
2: "USE_FAKE",
}
Config_DomainStrategy_value = map[string]int32{
"USE_ALL": 0,
"USE_IP": 1,
"USE_FAKE": 2,
}
)
func (x Config_DomainStrategy) Enum() *Config_DomainStrategy {
p := new(Config_DomainStrategy)
*p = x
return p
}
func (x Config_DomainStrategy) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Config_DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
return file_proxy_dns_config_proto_enumTypes[0].Descriptor()
}
func (Config_DomainStrategy) Type() protoreflect.EnumType {
return &file_proxy_dns_config_proto_enumTypes[0]
}
func (x Config_DomainStrategy) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Config_DomainStrategy.Descriptor instead.
func (Config_DomainStrategy) EnumDescriptor() ([]byte, []int) {
return file_proxy_dns_config_proto_rawDescGZIP(), []int{0, 0}
}
type Config struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -33,7 +82,8 @@ type Config struct {
// Server is the DNS server address. If specified, this address overrides the
// original one.
Server *net.Endpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
Server *net.Endpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
DomainStrategy Config_DomainStrategy `protobuf:"varint,2,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.proxy.dns.Config_DomainStrategy" json:"domain_strategy,omitempty"`
}
func (x *Config) Reset() {
@ -75,6 +125,13 @@ func (x *Config) GetServer() *net.Endpoint {
return nil
}
func (x *Config) GetDomainStrategy() Config_DomainStrategy {
if x != nil {
return x.DomainStrategy
}
return Config_USE_ALL
}
var File_proxy_dns_config_proto protoreflect.FileDescriptor
var file_proxy_dns_config_proto_rawDesc = []byte{
@ -82,16 +139,25 @@ var file_proxy_dns_config_proto_rawDesc = []byte{
0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70,
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}
var (
@ -106,18 +172,21 @@ func file_proxy_dns_config_proto_rawDescGZIP() []byte {
return file_proxy_dns_config_proto_rawDescData
}
var file_proxy_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_proxy_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_proxy_dns_config_proto_goTypes = []interface{}{
(*Config)(nil), // 0: xray.proxy.dns.Config
(*net.Endpoint)(nil), // 1: xray.common.net.Endpoint
(Config_DomainStrategy)(0), // 0: xray.proxy.dns.Config.DomainStrategy
(*Config)(nil), // 1: xray.proxy.dns.Config
(*net.Endpoint)(nil), // 2: xray.common.net.Endpoint
}
var file_proxy_dns_config_proto_depIdxs = []int32{
1, // 0: xray.proxy.dns.Config.server:type_name -> xray.common.net.Endpoint
1, // [1:1] is the sub-list for method output_type
1, // [1:1] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
2, // 0: xray.proxy.dns.Config.server:type_name -> xray.common.net.Endpoint
0, // 1: xray.proxy.dns.Config.domain_strategy:type_name -> xray.proxy.dns.Config.DomainStrategy
2, // [2:2] is the sub-list for method output_type
2, // [2:2] is the sub-list for method input_type
2, // [2:2] is the sub-list for extension type_name
2, // [2:2] is the sub-list for extension extendee
0, // [0:2] is the sub-list for field type_name
}
func init() { file_proxy_dns_config_proto_init() }
@ -144,13 +213,14 @@ func file_proxy_dns_config_proto_init() {
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_proxy_dns_config_proto_rawDesc,
NumEnums: 0,
NumEnums: 1,
NumMessages: 1,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_proxy_dns_config_proto_goTypes,
DependencyIndexes: file_proxy_dns_config_proto_depIdxs,
EnumInfos: file_proxy_dns_config_proto_enumTypes,
MessageInfos: file_proxy_dns_config_proto_msgTypes,
}.Build()
File_proxy_dns_config_proto = out.File

6
proxy/dns/config.proto
View file

@ -12,4 +12,10 @@ message Config {
// Server is the DNS server address. If specified, this address overrides the
// original one.
xray.common.net.Endpoint server = 1;
enum DomainStrategy {
USE_ALL = 0;
USE_IP = 1;
USE_FAKE = 2;
}
DomainStrategy domain_strategy = 2;
}

23
proxy/dns/dns.go
View file

@ -39,6 +39,7 @@ type Handler struct {
client dns.Client
ownLinkVerifier ownLinkVerifier
server net.Destination
DomainStrategy Config_DomainStrategy
}
func (h *Handler) Init(config *Config, dnsClient dns.Client) error {
@ -199,16 +200,24 @@ func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string,
var err error
var ttl uint32 = 600
var opt dns.Option
var opt []dns.Option
switch qType {
case dnsmessage.TypeA:
opt = dns.LookupIPv4Only
case dnsmessage.TypeAAAA:
opt = dns.LookupIPv6Only
if h.DomainStrategy == Config_USE_FAKE {
opt = append(opt, dns.LookupFakeOnly)
} else {
switch qType {
case dnsmessage.TypeA:
opt = append(opt, dns.LookupIPv4Only)
case dnsmessage.TypeAAAA:
opt = append(opt, dns.LookupIPv6Only)
}
}
ips, err = h.client.LookupOptions(domain, opt, dns.LookupFake)
if h.DomainStrategy == Config_USE_ALL {
opt = append(opt, dns.LookupFake)
}
ips, err = h.client.LookupOptions(domain, opt...)
rcode := dns.RCodeFromError(err)
if rcode == 0 && len(ips) == 0 && err != dns.ErrEmptyResponse {
newError("ip query").Base(err).WriteToLog()