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feat: add queryStrategy option for DNS

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This commit is contained in:
AkinoKaede 2021-03-19 23:33:07 +08:00
parent 41d3f31447
commit 8382b29922
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GPG key ID: C687746B27587C0D
16 changed files with 419 additions and 267 deletions
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176
app/dns/config.pb.go
View file

@ -79,6 +79,55 @@ func (DomainMatchingType) EnumDescriptor() ([]byte, []int) {
return file_app_dns_config_proto_rawDescGZIP(), []int{0}
}
type QueryStrategy int32
const (
QueryStrategy_USE_IP QueryStrategy = 0
QueryStrategy_USE_IP4 QueryStrategy = 1
QueryStrategy_USE_IP6 QueryStrategy = 2
)
// Enum value maps for QueryStrategy.
var (
QueryStrategy_name = map[int32]string{
0: "USE_IP",
1: "USE_IP4",
2: "USE_IP6",
}
QueryStrategy_value = map[string]int32{
"USE_IP": 0,
"USE_IP4": 1,
"USE_IP6": 2,
}
)
func (x QueryStrategy) Enum() *QueryStrategy {
p := new(QueryStrategy)
*p = x
return p
}
func (x QueryStrategy) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (QueryStrategy) Descriptor() protoreflect.EnumDescriptor {
return file_app_dns_config_proto_enumTypes[1].Descriptor()
}
func (QueryStrategy) Type() protoreflect.EnumType {
return &file_app_dns_config_proto_enumTypes[1]
}
func (x QueryStrategy) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use QueryStrategy.Descriptor instead.
func (QueryStrategy) EnumDescriptor() ([]byte, []int) {
return file_app_dns_config_proto_rawDescGZIP(), []int{1}
}
type NameServer struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -183,7 +232,8 @@ type Config struct {
// Tag is the inbound tag of DNS client.
Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
// DisableCache Disable DNS cache
DisableCache bool `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
DisableCache bool `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
QueryStrategy QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
}
func (x *Config) Reset() {
@ -269,6 +319,13 @@ func (x *Config) GetDisableCache() bool {
return false
}
func (x *Config) GetQueryStrategy() QueryStrategy {
if x != nil {
return x.QueryStrategy
}
return QueryStrategy_USE_IP
}
type NameServer_PriorityDomain struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -492,7 +549,7 @@ var file_app_dns_config_proto_rawDesc = []byte{
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@ -513,32 +570,39 @@ var file_app_dns_config_proto_rawDesc = []byte{
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}
var (
@ -553,37 +617,39 @@ func file_app_dns_config_proto_rawDescGZIP() []byte {
return file_app_dns_config_proto_rawDescData
}
var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
var file_app_dns_config_proto_goTypes = []interface{}{
(DomainMatchingType)(0), // 0: xray.app.dns.DomainMatchingType
(*NameServer)(nil), // 1: xray.app.dns.NameServer
(*Config)(nil), // 2: xray.app.dns.Config
(*NameServer_PriorityDomain)(nil), // 3: xray.app.dns.NameServer.PriorityDomain
(*NameServer_OriginalRule)(nil), // 4: xray.app.dns.NameServer.OriginalRule
nil, // 5: xray.app.dns.Config.HostsEntry
(*Config_HostMapping)(nil), // 6: xray.app.dns.Config.HostMapping
(*net.Endpoint)(nil), // 7: xray.common.net.Endpoint
(*router.GeoIP)(nil), // 8: xray.app.router.GeoIP
(*net.IPOrDomain)(nil), // 9: xray.common.net.IPOrDomain
(QueryStrategy)(0), // 1: xray.app.dns.QueryStrategy
(*NameServer)(nil), // 2: xray.app.dns.NameServer
(*Config)(nil), // 3: xray.app.dns.Config
(*NameServer_PriorityDomain)(nil), // 4: xray.app.dns.NameServer.PriorityDomain
(*NameServer_OriginalRule)(nil), // 5: xray.app.dns.NameServer.OriginalRule
nil, // 6: xray.app.dns.Config.HostsEntry
(*Config_HostMapping)(nil), // 7: xray.app.dns.Config.HostMapping
(*net.Endpoint)(nil), // 8: xray.common.net.Endpoint
(*router.GeoIP)(nil), // 9: xray.app.router.GeoIP
(*net.IPOrDomain)(nil), // 10: xray.common.net.IPOrDomain
}
var file_app_dns_config_proto_depIdxs = []int32{
7, // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
3, // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
8, // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
4, // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
7, // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
1, // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
5, // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
6, // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
0, // 8: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
9, // 9: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
0, // 10: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
11, // [11:11] is the sub-list for method output_type
11, // [11:11] is the sub-list for method input_type
11, // [11:11] is the sub-list for extension type_name
11, // [11:11] is the sub-list for extension extendee
0, // [0:11] is the sub-list for field type_name
8, // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
4, // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
9, // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
5, // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
8, // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
2, // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
6, // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
7, // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
1, // 8: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
0, // 9: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
10, // 10: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
0, // 11: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
12, // [12:12] is the sub-list for method output_type
12, // [12:12] is the sub-list for method input_type
12, // [12:12] is the sub-list for extension type_name
12, // [12:12] is the sub-list for extension extendee
0, // [0:12] is the sub-list for field type_name
}
func init() { file_app_dns_config_proto_init() }
@ -658,7 +724,7 @@ func file_app_dns_config_proto_init() {
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_app_dns_config_proto_rawDesc,
NumEnums: 1,
NumEnums: 2,
NumMessages: 6,
NumExtensions: 0,
NumServices: 0,

10
app/dns/config.proto
View file

@ -36,6 +36,12 @@ enum DomainMatchingType {
Regex = 3;
}
enum QueryStrategy {
USE_IP = 0;
USE_IP4 = 1;
USE_IP6 = 2;
}
message Config {
// Nameservers used by this DNS. Only traditional UDP servers are support at
// the moment. A special value 'localhost' as a domain address can be set to
@ -73,5 +79,7 @@ message Config {
reserved 7;
// DisableCache Disable DNS cache
bool disableCache = 8;
bool disableCache = 8;
QueryStrategy query_strategy = 9;
}

68
app/dns/dns.go
View file

@ -24,6 +24,7 @@ type DNS struct {
sync.Mutex
tag string
disableCache bool
ipOption *dns.IPOption
hosts *StaticHosts
clients []*Client
ctx context.Context
@ -54,6 +55,28 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
return nil, newError("unexpected client IP length ", len(config.ClientIp))
}
var ipOption *dns.IPOption
switch config.QueryStrategy {
case QueryStrategy_USE_IP:
ipOption = &dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
}
case QueryStrategy_USE_IP4:
ipOption = &dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
}
case QueryStrategy_USE_IP6:
ipOption = &dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
}
}
hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
if err != nil {
return nil, newError("failed to create hosts").Base(err)
@ -110,6 +133,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
return &DNS{
tag: tag,
hosts: hosts,
ipOption: ipOption,
clients: clients,
ctx: ctx,
domainMatcher: domainMatcher,
@ -140,7 +164,33 @@ func (s *DNS) IsOwnLink(ctx context.Context) bool {
}
// LookupIP implements dns.Client.
func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
func (s *DNS) LookupIP(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
}
// LookupIPv4 implements dns.IPv4Lookup.
func (s *DNS) LookupIPv4(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
})
}
// LookupIPv6 implements dns.IPv6Lookup.
func (s *DNS) LookupIPv6(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
})
}
func (s *DNS) lookupIPInternal(domain string, option dns.IPOption) ([]net.IP, error) {
if domain == "" {
return nil, newError("empty domain name")
}
@ -188,6 +238,22 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
return nil, newError("returning nil for domain ", domain).Base(errors.Combine(errs...))
}
// GetIPOption implements ClientWithIPOption.
func (s *DNS) GetIPOption() *dns.IPOption {
return s.ipOption
}
// SetQueryOption implements ClientWithIPOption.
func (s *DNS) SetQueryOption(isIPv4Enable, isIPv6Enable bool) {
s.ipOption.IPv4Enable = isIPv4Enable
s.ipOption.IPv6Enable = isIPv6Enable
}
// SetFakeDNSOption implements ClientWithIPOption.
func (s *DNS) SetFakeDNSOption(isFakeEnable bool) {
s.ipOption.FakeEnable = isFakeEnable
}
func (s *DNS) sortClients(domain string) []*Client {
clients := make([]*Client, 0, len(s.clients))
clientUsed := make([]bool, len(s.clients))

135
app/dns/dns_test.go
View file

@ -154,11 +154,7 @@ func TestUDPServerSubnet(t *testing.T) {
client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -213,11 +209,7 @@ func TestUDPServer(t *testing.T) {
client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
{
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -228,11 +220,7 @@ func TestUDPServer(t *testing.T) {
}
{
ips, err := client.LookupIP("facebook.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("facebook.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -243,11 +231,7 @@ func TestUDPServer(t *testing.T) {
}
{
_, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
_, err := client.LookupIP("notexist.google.com")
if err == nil {
t.Fatal("nil error")
}
@ -257,11 +241,8 @@ func TestUDPServer(t *testing.T) {
}
{
ips, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
})
clientv6 := client.(feature_dns.IPv6Lookup)
ips, err := clientv6.LookupIPv6("ipv4only.google.com")
if err != feature_dns.ErrEmptyResponse {
t.Fatal("error: ", err)
}
@ -273,11 +254,7 @@ func TestUDPServer(t *testing.T) {
dnsServer.Shutdown()
{
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -354,11 +331,7 @@ func TestPrioritizedDomain(t *testing.T) {
startTime := time.Now()
{
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -417,12 +390,9 @@ func TestUDPServerIPv6(t *testing.T) {
common.Must(err)
client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
client6 := client.(feature_dns.IPv6Lookup)
{
ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client6.LookupIPv6("ipv6.google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -485,11 +455,7 @@ func TestStaticHostDomain(t *testing.T) {
client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
{
ips, err := client.LookupIP("example.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("example.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -596,11 +562,7 @@ func TestIPMatch(t *testing.T) {
startTime := time.Now()
{
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -719,11 +681,7 @@ func TestLocalDomain(t *testing.T) {
startTime := time.Now()
{ // Will match dotless:
ips, err := client.LookupIP("hostname", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("hostname")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -734,11 +692,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match domain:local
ips, err := client.LookupIP("hostname.local", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("hostname.local")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -749,11 +703,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match static ip
ips, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("hostnamestatic")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -764,11 +714,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match domain replacing
ips, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("hostnamealias")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -779,11 +725,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match dotless:localhost, but not expectIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
ips, err := client.LookupIP("localhost", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("localhost")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -794,11 +736,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
ips, err := client.LookupIP("localhost-a", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("localhost-a")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -809,11 +747,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
ips, err := client.LookupIP("localhost-b", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("localhost-b")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -824,11 +758,7 @@ func TestLocalDomain(t *testing.T) {
}
{ // Will match dotless:
ips, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("Mijia Cloud")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -990,11 +920,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
startTime := time.Now()
{ // Will match server 1,2 and server 1 returns expected ip
ips, err := client.LookupIP("google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -1005,11 +931,8 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
}
{ // Will match server 1,2 and server 1 returns unexpected ip, then server 2 returns expected one
ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
})
clientv4 := client.(feature_dns.IPv4Lookup)
ips, err := clientv4.LookupIPv4("ipv6.google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -1020,11 +943,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
}
{ // Will match server 3,1,2 and server 3 returns expected one
ips, err := client.LookupIP("api.google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("api.google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}
@ -1035,11 +954,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
}
{ // Will match server 4,3,1,2 and server 4 returns expected one
ips, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
ips, err := client.LookupIP("v2.api.google.com")
if err != nil {
t.Fatal("unexpected error: ", err)
}

18
app/dns/nameserver_local.go
View file

@ -15,11 +15,23 @@ type LocalNameServer struct {
// QueryIP implements Server.
func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) ([]net.IP, error) {
if option.IPv4Enable || option.IPv6Enable {
return s.client.LookupIP(domain, option)
var ips []net.IP
var err error
switch {
case option.IPv4Enable && option.IPv6Enable:
ips, err = s.client.LookupIP(domain)
case option.IPv4Enable:
ips, err = s.client.LookupIPv4(domain)
case option.IPv6Enable:
ips, err = s.client.LookupIPv6(domain)
}
return nil, newError("neither IPv4 nor IPv6 is enabled")
if len(ips) > 0 {
newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
}
return ips, err
}
// Name implements Server.

13
app/router/router_test.go
View file

@ -9,7 +9,6 @@ import (
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/features/dns"
"github.com/xtls/xray-core/features/outbound"
routing_session "github.com/xtls/xray-core/features/routing/session"
"github.com/xtls/xray-core/testing/mocks"
@ -116,11 +115,7 @@ func TestIPOnDemand(t *testing.T) {
defer mockCtl.Finish()
mockDNS := mocks.NewDNSClient(mockCtl)
mockDNS.EXPECT().LookupIP(gomock.Eq("example.com"), dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
mockDNS.EXPECT().LookupIP(gomock.Eq("example.com")).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
r := new(Router)
common.Must(r.Init(config, mockDNS, nil))
@ -155,11 +150,7 @@ func TestIPIfNonMatchDomain(t *testing.T) {
defer mockCtl.Finish()
mockDNS := mocks.NewDNSClient(mockCtl)
mockDNS.EXPECT().LookupIP(gomock.Eq("example.com"), dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
mockDNS.EXPECT().LookupIP(gomock.Eq("example.com")).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
r := new(Router)
common.Must(r.Init(config, mockDNS, nil))

30
features/dns/client.go
View file

@ -21,7 +21,35 @@ type Client interface {
features.Feature
// LookupIP returns IP address for the given domain. IPs may contain IPv4 and/or IPv6 addresses.
LookupIP(domain string, option IPOption) ([]net.IP, error)
LookupIP(domain string) ([]net.IP, error)
}
// IPv4Lookup is an optional feature for querying IPv4 addresses only.
//
// xray:api:beta
type IPv4Lookup interface {
LookupIPv4(domain string) ([]net.IP, error)
}
// IPv6Lookup is an optional feature for querying IPv6 addresses only.
//
// xray:api:beta
type IPv6Lookup interface {
LookupIPv6(domain string) ([]net.IP, error)
}
// ClientWithIPOption is an optional feature for querying DNS information.
//
// xray:api:beta
type ClientWithIPOption interface {
// GetIPOption returns IPOption for the DNS client.
GetIPOption() *IPOption
// SetQueryOption sets IPv4Enable and IPv6Enable for the DNS client.
SetQueryOption(isIPv4Enable, isIPv6Enable bool)
// SetFakeDNSOption sets FakeEnable option for DNS client.
SetFakeDNSOption(isFakeEnable bool)
}
// ClientType returns the type of Client interface. Can be used for implementing common.HasType.

52
features/dns/localdns/client.go
View file

@ -20,41 +20,59 @@ func (*Client) Start() error { return nil }
func (*Client) Close() error { return nil }
// LookupIP implements Client.
func (*Client) LookupIP(host string, option dns.IPOption) ([]net.IP, error) {
func (*Client) LookupIP(host string) ([]net.IP, error) {
ips, err := net.LookupIP(host)
if err != nil {
return nil, err
}
parsedIPs := make([]net.IP, 0, len(ips))
ipv4 := make([]net.IP, 0, len(ips))
ipv6 := make([]net.IP, 0, len(ips))
for _, ip := range ips {
parsed := net.IPAddress(ip)
if parsed != nil {
parsedIPs = append(parsedIPs, parsed.IP())
}
}
if len(parsedIPs) == 0 {
return nil, dns.ErrEmptyResponse
}
return parsedIPs, nil
}
// LookupIPv4 implements IPv4Lookup.
func (c *Client) LookupIPv4(host string) ([]net.IP, error) {
ips, err := c.LookupIP(host)
if err != nil {
return nil, err
}
ipv4 := make([]net.IP, 0, len(ips))
for _, ip := range ips {
if len(ip) == net.IPv4len {
ipv4 = append(ipv4, ip)
}
}
if len(ipv4) == 0 {
return nil, dns.ErrEmptyResponse
}
return ipv4, nil
}
// LookupIPv6 implements IPv6Lookup.
func (c *Client) LookupIPv6(host string) ([]net.IP, error) {
ips, err := c.LookupIP(host)
if err != nil {
return nil, err
}
ipv6 := make([]net.IP, 0, len(ips))
for _, ip := range ips {
if len(ip) == net.IPv6len {
ipv6 = append(ipv6, ip)
}
}
switch {
case option.IPv4Enable && option.IPv6Enable:
if len(parsedIPs) > 0 {
return parsedIPs, nil
}
case option.IPv4Enable:
if len(ipv4) > 0 {
return ipv4, nil
}
case option.IPv6Enable:
if len(ipv6) > 0 {
return ipv6, nil
}
if len(ipv6) == 0 {
return nil, dns.ErrEmptyResponse
}
return nil, dns.ErrEmptyResponse
return ipv6, nil
}
// New create a new dns.Client that queries localhost for DNS.

30
features/routing/dns/context.go
View file

@ -26,11 +26,35 @@ func (ctx *ResolvableContext) GetTargetIPs() []net.IP {
}
if domain := ctx.GetTargetDomain(); len(domain) != 0 {
ips, err := ctx.dnsClient.LookupIP(domain, dns.IPOption{
var lookupFunc func(string) ([]net.IP, error) = ctx.dnsClient.LookupIP
ipOption := &dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
})
}
if c, ok := ctx.dnsClient.(dns.ClientWithIPOption); ok {
ipOption = c.GetIPOption()
c.SetFakeDNSOption(false) // Skip FakeDNS.
} else {
newError("ctx.dnsClient doesn't implement ClientWithIPOption").AtDebug().WriteToLog()
}
switch {
case ipOption.IPv4Enable && !ipOption.IPv6Enable:
if lookupIPv4, ok := ctx.dnsClient.(dns.IPv4Lookup); ok {
lookupFunc = lookupIPv4.LookupIPv4
} else {
newError("ctx.dnsClient doesn't implement IPv4Lookup. Use LookupIP instead.").AtDebug().WriteToLog()
}
case !ipOption.IPv4Enable && ipOption.IPv6Enable:
if lookupIPv6, ok := ctx.dnsClient.(dns.IPv6Lookup); ok {
lookupFunc = lookupIPv6.LookupIPv6
} else {
newError("ctx.dnsClient doesn't implement IPv6Lookup. Use LookupIP instead.").AtDebug().WriteToLog()
}
}
ips, err := lookupFunc(domain)
if err == nil {
ctx.resolvedIPs = ips
return ips

21
infra/conf/dns.go
View file

@ -108,11 +108,12 @@ var typeMap = map[router.Domain_Type]dns.DomainMatchingType{
// DNSConfig is a JSON serializable object for dns.Config.
type DNSConfig struct {
Servers []*NameServerConfig `json:"servers"`
Hosts map[string]*Address `json:"hosts"`
ClientIP *Address `json:"clientIp"`
Tag string `json:"tag"`
DisableCache bool `json:"disableCache"`
Servers []*NameServerConfig `json:"servers"`
Hosts map[string]*Address `json:"hosts"`
ClientIP *Address `json:"clientIp"`
Tag string `json:"tag"`
QueryStrategy string `json:"queryStrategy"`
DisableCache bool `json:"disableCache"`
}
func getHostMapping(addr *Address) *dns.Config_HostMapping {
@ -141,6 +142,16 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
config.ClientIp = []byte(c.ClientIP.IP())
}
config.QueryStrategy = dns.QueryStrategy_USE_IP
switch strings.ToLower(c.QueryStrategy) {
case "useip", "use_ip", "use-ip":
config.QueryStrategy = dns.QueryStrategy_USE_IP
case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
config.QueryStrategy = dns.QueryStrategy_USE_IP4
case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
config.QueryStrategy = dns.QueryStrategy_USE_IP6
}
for _, server := range c.Servers {
ns, err := server.Build()
if err != nil {

8
infra/conf/dns_test.go
View file

@ -77,7 +77,9 @@ func TestDNSConfigParsing(t *testing.T) {
"keyword:google": "8.8.8.8",
"regexp:.*\\.com": "8.8.4.4"
},
"clientIp": "10.0.0.1"
"clientIp": "10.0.0.1",
"queryStrategy": "UseIPv4",
"disableCache": true
}`,
Parser: parserCreator(),
Output: &dns.Config{
@ -133,7 +135,9 @@ func TestDNSConfigParsing(t *testing.T) {
Ip: [][]byte{{8, 8, 4, 4}},
},
},
ClientIp: []byte{10, 0, 0, 1},
ClientIp: []byte{10, 0, 0, 1},
QueryStrategy: dns.QueryStrategy_USE_IP4,
DisableCache: true,
},
},
})

6
infra/conf/freedom.go
View file

@ -22,11 +22,11 @@ func (c *FreedomConfig) Build() (proto.Message, error) {
config := new(freedom.Config)
config.DomainStrategy = freedom.Config_AS_IS
switch strings.ToLower(c.DomainStrategy) {
case "useip", "use_ip":
case "useip", "use_ip", "use-ip":
config.DomainStrategy = freedom.Config_USE_IP
case "useip4", "useipv4", "use_ipv4", "use_ip_v4", "use_ip4":
case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
config.DomainStrategy = freedom.Config_USE_IP4
case "useip6", "useipv6", "use_ipv6", "use_ip_v6", "use_ip6":
case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
config.DomainStrategy = freedom.Config_USE_IP6
}

34
proxy/dns/dns.go
View file

@ -37,12 +37,27 @@ type ownLinkVerifier interface {
type Handler struct {
client dns.Client
ipv4Lookup dns.IPv4Lookup
ipv6Lookup dns.IPv6Lookup
ownLinkVerifier ownLinkVerifier
server net.Destination
}
func (h *Handler) Init(config *Config, dnsClient dns.Client) error {
h.client = dnsClient
if ipv4lookup, ok := dnsClient.(dns.IPv4Lookup); ok {
h.ipv4Lookup = ipv4lookup
} else {
return newError("dns.Client doesn't implement IPv4Lookup")
}
if ipv6lookup, ok := dnsClient.(dns.IPv6Lookup); ok {
h.ipv6Lookup = ipv6lookup
} else {
return newError("dns.Client doesn't implement IPv6Lookup")
}
if v, ok := dnsClient.(ownLinkVerifier); ok {
h.ownLinkVerifier = v
}
@ -199,19 +214,18 @@ func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string,
var ttl uint32 = 600
// Do NOT skip FakeDNS
if c, ok := h.client.(dns.ClientWithIPOption); ok {
c.SetFakeDNSOption(true)
} else {
newError("dns.Client doesn't implement ClientWithIPOption")
}
switch qType {
case dnsmessage.TypeA:
ips, err = h.client.LookupIP(domain, dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: true,
})
ips, err = h.ipv4Lookup.LookupIPv4(domain)
case dnsmessage.TypeAAAA:
ips, err = h.client.LookupIP(domain, dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: true,
})
ips, err = h.ipv6Lookup.LookupIPv6(domain)
}
rcode := dns.RCodeFromError(err)

24
proxy/freedom/freedom.go
View file

@ -59,26 +59,24 @@ func (h *Handler) policy() policy.Session {
}
func (h *Handler) resolveIP(ctx context.Context, domain string, localAddr net.Address) net.Address {
var option dns.IPOption = dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
if c, ok := h.dns.(dns.ClientWithIPOption); ok {
c.SetFakeDNSOption(false) // Skip FakeDNS
} else {
newError("DNS client doesn't implement ClientWithIPOption")
}
var lookupFunc func(string) ([]net.IP, error) = h.dns.LookupIP
if h.config.DomainStrategy == Config_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()) {
option = dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
if lookupIPv4, ok := h.dns.(dns.IPv4Lookup); ok {
lookupFunc = lookupIPv4.LookupIPv4
}
} else if h.config.DomainStrategy == Config_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()) {
option = dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
if lookupIPv6, ok := h.dns.(dns.IPv6Lookup); ok {
lookupFunc = lookupIPv6.LookupIPv6
}
}
ips, err := h.dns.LookupIP(domain, option)
ips, err := lookupFunc(domain)
if err != nil {
newError("failed to get IP address for domain ", domain).Base(err).WriteToLog(session.ExportIDToError(ctx))
}

38
testing/mocks/dns.go
View file

@ -1,40 +1,40 @@
// Code generated by MockGen. DO NOT EDIT.
// Source: github.com/xtls/xray-core/features/dns (interfaces: Client)
// Source: github.com/xray/xray-core/v4/features/dns (interfaces: Client)
// Package mocks is a generated GoMock package.
package mocks
import (
gomock "github.com/golang/mock/gomock"
dns "github.com/xtls/xray-core/features/dns"
net "net"
reflect "reflect"
gomock "github.com/golang/mock/gomock"
)
// DNSClient is a mock of Client interface
// DNSClient is a mock of Client interface.
type DNSClient struct {
ctrl *gomock.Controller
recorder *DNSClientMockRecorder
}
// DNSClientMockRecorder is the mock recorder for DNSClient
// DNSClientMockRecorder is the mock recorder for DNSClient.
type DNSClientMockRecorder struct {
mock *DNSClient
}
// NewDNSClient creates a new mock instance
// NewDNSClient creates a new mock instance.
func NewDNSClient(ctrl *gomock.Controller) *DNSClient {
mock := &DNSClient{ctrl: ctrl}
mock.recorder = &DNSClientMockRecorder{mock}
return mock
}
// EXPECT returns an object that allows the caller to indicate expected use
// EXPECT returns an object that allows the caller to indicate expected use.
func (m *DNSClient) EXPECT() *DNSClientMockRecorder {
return m.recorder
}
// Close mocks base method
// Close mocks base method.
func (m *DNSClient) Close() error {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "Close")
@ -42,28 +42,28 @@ func (m *DNSClient) Close() error {
return ret0
}
// Close indicates an expected call of Close
// Close indicates an expected call of Close.
func (mr *DNSClientMockRecorder) Close() *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Close", reflect.TypeOf((*DNSClient)(nil).Close))
}
// LookupIP mocks base method
func (m *DNSClient) LookupIP(arg0 string, arg1 dns.IPOption) ([]net.IP, error) {
// LookupIP mocks base method.
func (m *DNSClient) LookupIP(arg0 string) ([]net.IP, error) {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "LookupIP", arg0, arg1)
ret := m.ctrl.Call(m, "LookupIP", arg0)
ret0, _ := ret[0].([]net.IP)
ret1, _ := ret[1].(error)
return ret0, ret1
}
// LookupIP indicates an expected call of LookupIP
func (mr *DNSClientMockRecorder) LookupIP(arg0, arg1 interface{}) *gomock.Call {
// LookupIP indicates an expected call of LookupIP.
func (mr *DNSClientMockRecorder) LookupIP(arg0 interface{}) *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "LookupIP", reflect.TypeOf((*DNSClient)(nil).LookupIP), arg0, arg1)
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "LookupIP", reflect.TypeOf((*DNSClient)(nil).LookupIP), arg0)
}
// Start mocks base method
// Start mocks base method.
func (m *DNSClient) Start() error {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "Start")
@ -71,13 +71,13 @@ func (m *DNSClient) Start() error {
return ret0
}
// Start indicates an expected call of Start
// Start indicates an expected call of Start.
func (mr *DNSClientMockRecorder) Start() *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Start", reflect.TypeOf((*DNSClient)(nil).Start))
}
// Type mocks base method
// Type mocks base method.
func (m *DNSClient) Type() interface{} {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "Type")
@ -85,7 +85,7 @@ func (m *DNSClient) Type() interface{} {
return ret0
}
// Type indicates an expected call of Type
// Type indicates an expected call of Type.
func (mr *DNSClientMockRecorder) Type() *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Type", reflect.TypeOf((*DNSClient)(nil).Type))

23
transport/internet/system_dialer.go
View file

@ -63,30 +63,27 @@ func (d *DefaultSystemDialer) lookupIP(domain string, strategy DomainStrategy, l
return nil, nil
}
var option = dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
if c, ok := d.dns.(dns.ClientWithIPOption); ok {
c.SetFakeDNSOption(false) // Skip FakeDNS
} else {
newError("DNS client doesn't implement ClientWithIPOption")
}
var lookupFunc func(string) ([]net.IP, error) = d.dns.LookupIP
switch {
case strategy == DomainStrategy_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()):
option = dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
if lookupIPv4, ok := d.dns.(dns.IPv4Lookup); ok {
lookupFunc = lookupIPv4.LookupIPv4
}
case strategy == DomainStrategy_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()):
option = dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
if lookupIPv6, ok := d.dns.(dns.IPv6Lookup); ok {
lookupFunc = lookupIPv6.LookupIPv6
}
case strategy == DomainStrategy_AS_IS:
return nil, nil
}
return d.dns.LookupIP(domain, option)
return lookupFunc(domain)
}
func (d *DefaultSystemDialer) doLookupIP(ctx context.Context, dst net.Destination, sockopt *SocketConfig) bool {