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Code Issues Releases Wiki Activity

Feat: [app/dns] Support per-client configuration (#1977) 

* DNS: Support per-client configuration

* Add deprecated feature warnings for `skipFallback`, `disableCache`, `disableFallback`, `disableFallbackIfMatch`
This commit is contained in:
Vigilans 2022-11-30 08:43:39 +08:00 committed by GitHub
parent 291b5466de
commit d3b50bb989
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 945 additions and 492 deletions
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22
app/dns/config.go
View File

@ -4,9 +4,12 @@
package dns
import (
"golang.org/x/net/dns/dnsmessage"
"github.com/v2fly/v2ray-core/v5/common/net"
"github.com/v2fly/v2ray-core/v5/common/strmatcher"
"github.com/v2fly/v2ray-core/v5/common/uuid"
"github.com/v2fly/v2ray-core/v5/features/dns"
)
var typeMap = map[DomainMatchingType]strmatcher.Type{
@ -60,6 +63,25 @@ func toNetIP(addrs []net.Address) ([]net.IP, error) {
return ips, nil
}
func toIPOption(s QueryStrategy) dns.IPOption {
return dns.IPOption{
IPv4Enable: s == QueryStrategy_USE_IP || s == QueryStrategy_USE_IP4,
IPv6Enable: s == QueryStrategy_USE_IP || s == QueryStrategy_USE_IP6,
FakeEnable: false,
}
}
func toReqTypes(option dns.IPOption) []dnsmessage.Type {
var reqTypes []dnsmessage.Type
if option.IPv4Enable {
reqTypes = append(reqTypes, dnsmessage.TypeA)
}
if option.IPv6Enable {
reqTypes = append(reqTypes, dnsmessage.TypeAAAA)
}
return reqTypes
}
func generateRandomTag() string {
id := uuid.New()
return "v2ray.system." + id.String()

773
app/dns/config.pb.go
View File

@ -118,6 +118,101 @@ func (QueryStrategy) EnumDescriptor() ([]byte, []int) {
return file_app_dns_config_proto_rawDescGZIP(), []int{1}
}
type CacheStrategy int32
const (
CacheStrategy_CacheEnabled CacheStrategy = 0
CacheStrategy_CacheDisabled CacheStrategy = 1
)
// Enum value maps for CacheStrategy.
var (
CacheStrategy_name = map[int32]string{
0: "CacheEnabled",
1: "CacheDisabled",
}
CacheStrategy_value = map[string]int32{
"CacheEnabled": 0,
"CacheDisabled": 1,
}
)
func (x CacheStrategy) Enum() *CacheStrategy {
p := new(CacheStrategy)
*p = x
return p
}
func (x CacheStrategy) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (CacheStrategy) Descriptor() protoreflect.EnumDescriptor {
return file_app_dns_config_proto_enumTypes[2].Descriptor()
}
func (CacheStrategy) Type() protoreflect.EnumType {
return &file_app_dns_config_proto_enumTypes[2]
}
func (x CacheStrategy) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use CacheStrategy.Descriptor instead.
func (CacheStrategy) EnumDescriptor() ([]byte, []int) {
return file_app_dns_config_proto_rawDescGZIP(), []int{2}
}
type FallbackStrategy int32
const (
FallbackStrategy_Enabled FallbackStrategy = 0
FallbackStrategy_Disabled FallbackStrategy = 1
FallbackStrategy_DisabledIfAnyMatch FallbackStrategy = 2
)
// Enum value maps for FallbackStrategy.
var (
FallbackStrategy_name = map[int32]string{
0: "Enabled",
1: "Disabled",
2: "DisabledIfAnyMatch",
}
FallbackStrategy_value = map[string]int32{
"Enabled": 0,
"Disabled": 1,
"DisabledIfAnyMatch": 2,
}
)
func (x FallbackStrategy) Enum() *FallbackStrategy {
p := new(FallbackStrategy)
*p = x
return p
}
func (x FallbackStrategy) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (FallbackStrategy) Descriptor() protoreflect.EnumDescriptor {
return file_app_dns_config_proto_enumTypes[3].Descriptor()
}
func (FallbackStrategy) Type() protoreflect.EnumType {
return &file_app_dns_config_proto_enumTypes[3]
}
func (x FallbackStrategy) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use FallbackStrategy.Descriptor instead.
func (FallbackStrategy) EnumDescriptor() ([]byte, []int) {
return file_app_dns_config_proto_rawDescGZIP(), []int{3}
}
type NameServer struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -125,10 +220,17 @@ type NameServer struct {
Address *net.Endpoint `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
ClientIp []byte `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
SkipFallback bool `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
Tag string `protobuf:"bytes,7,opt,name=tag,proto3" json:"tag,omitempty"`
PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
Geoip []*routercommon.GeoIP `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
OriginalRules []*NameServer_OriginalRule `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
SkipFallback bool `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
QueryStrategy *QueryStrategy `protobuf:"varint,8,opt,name=query_strategy,json=queryStrategy,proto3,enum=v2ray.core.app.dns.QueryStrategy,oneof" json:"query_strategy,omitempty"`
CacheStrategy *CacheStrategy `protobuf:"varint,9,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=v2ray.core.app.dns.CacheStrategy,oneof" json:"cache_strategy,omitempty"`
FallbackStrategy *FallbackStrategy `protobuf:"varint,10,opt,name=fallback_strategy,json=fallbackStrategy,proto3,enum=v2ray.core.app.dns.FallbackStrategy,oneof" json:"fallback_strategy,omitempty"`
}
func (x *NameServer) Reset() {
@ -177,11 +279,11 @@ func (x *NameServer) GetClientIp() []byte {
return nil
}
func (x *NameServer) GetSkipFallback() bool {
func (x *NameServer) GetTag() string {
if x != nil {
return x.SkipFallback
return x.Tag
}
return false
return ""
}
func (x *NameServer) GetPrioritizedDomain() []*NameServer_PriorityDomain {
@ -205,6 +307,35 @@ func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
return nil
}
// Deprecated: Do not use.
func (x *NameServer) GetSkipFallback() bool {
if x != nil {
return x.SkipFallback
}
return false
}
func (x *NameServer) GetQueryStrategy() QueryStrategy {
if x != nil && x.QueryStrategy != nil {
return *x.QueryStrategy
}
return QueryStrategy_USE_IP
}
func (x *NameServer) GetCacheStrategy() CacheStrategy {
if x != nil && x.CacheStrategy != nil {
return *x.CacheStrategy
}
return CacheStrategy_CacheEnabled
}
func (x *NameServer) GetFallbackStrategy() FallbackStrategy {
if x != nil && x.FallbackStrategy != nil {
return *x.FallbackStrategy
}
return FallbackStrategy_Enabled
}
type HostMapping struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -303,10 +434,24 @@ type Config struct {
// Tag is the inbound tag of DNS client.
Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
// DisableCache disables DNS cache
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=v2ray.core.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
DisableFallback bool `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
DisableFallbackIfMatch bool `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
// Deprecated. Use cache_strategy.
//
// Deprecated: Do not use.
DisableCache bool `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
DisableFallback bool `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
DisableFallbackIfMatch bool `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
// Default query strategy (IPv4, IPv6, or both) for each name server.
QueryStrategy QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=v2ray.core.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
// Default cache strategy for each name server.
CacheStrategy CacheStrategy `protobuf:"varint,12,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=v2ray.core.app.dns.CacheStrategy" json:"cache_strategy,omitempty"`
// Default fallback strategy for each name server.
FallbackStrategy FallbackStrategy `protobuf:"varint,13,opt,name=fallback_strategy,json=fallbackStrategy,proto3,enum=v2ray.core.app.dns.FallbackStrategy" json:"fallback_strategy,omitempty"`
}
func (x *Config) Reset() {
@ -385,6 +530,7 @@ func (x *Config) GetTag() string {
return ""
}
// Deprecated: Do not use.
func (x *Config) GetDisableCache() bool {
if x != nil {
return x.DisableCache
@ -392,6 +538,22 @@ func (x *Config) GetDisableCache() bool {
return false
}
// Deprecated: Do not use.
func (x *Config) GetDisableFallback() bool {
if x != nil {
return x.DisableFallback
}
return false
}
// Deprecated: Do not use.
func (x *Config) GetDisableFallbackIfMatch() bool {
if x != nil {
return x.DisableFallbackIfMatch
}
return false
}
func (x *Config) GetQueryStrategy() QueryStrategy {
if x != nil {
return x.QueryStrategy
@ -399,18 +561,18 @@ func (x *Config) GetQueryStrategy() QueryStrategy {
return QueryStrategy_USE_IP
}
func (x *Config) GetDisableFallback() bool {
func (x *Config) GetCacheStrategy() CacheStrategy {
if x != nil {
return x.DisableFallback
return x.CacheStrategy
}
return false
return CacheStrategy_CacheEnabled
}
func (x *Config) GetDisableFallbackIfMatch() bool {
func (x *Config) GetFallbackStrategy() FallbackStrategy {
if x != nil {
return x.DisableFallbackIfMatch
return x.FallbackStrategy
}
return false
return FallbackStrategy_Enabled
}
type SimplifiedConfig struct {
@ -427,10 +589,24 @@ type SimplifiedConfig struct {
// Tag is the inbound tag of DNS client.
Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
// DisableCache disables DNS cache
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=v2ray.core.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
DisableFallback bool `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
DisableFallbackIfMatch bool `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
// Deprecated. Use cache_strategy.
//
// Deprecated: Do not use.
DisableCache bool `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
DisableFallback bool `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
DisableFallbackIfMatch bool `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
// Default query strategy (IPv4, IPv6, or both) for each name server.
QueryStrategy QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=v2ray.core.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
// Default cache strategy for each name server.
CacheStrategy CacheStrategy `protobuf:"varint,12,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=v2ray.core.app.dns.CacheStrategy" json:"cache_strategy,omitempty"`
// Default fallback strategy for each name server.
FallbackStrategy FallbackStrategy `protobuf:"varint,13,opt,name=fallback_strategy,json=fallbackStrategy,proto3,enum=v2ray.core.app.dns.FallbackStrategy" json:"fallback_strategy,omitempty"`
}
func (x *SimplifiedConfig) Reset() {
@ -493,6 +669,7 @@ func (x *SimplifiedConfig) GetTag() string {
return ""
}
// Deprecated: Do not use.
func (x *SimplifiedConfig) GetDisableCache() bool {
if x != nil {
return x.DisableCache
@ -500,6 +677,22 @@ func (x *SimplifiedConfig) GetDisableCache() bool {
return false
}
// Deprecated: Do not use.
func (x *SimplifiedConfig) GetDisableFallback() bool {
if x != nil {
return x.DisableFallback
}
return false
}
// Deprecated: Do not use.
func (x *SimplifiedConfig) GetDisableFallbackIfMatch() bool {
if x != nil {
return x.DisableFallbackIfMatch
}
return false
}
func (x *SimplifiedConfig) GetQueryStrategy() QueryStrategy {
if x != nil {
return x.QueryStrategy
@ -507,18 +700,18 @@ func (x *SimplifiedConfig) GetQueryStrategy() QueryStrategy {
return QueryStrategy_USE_IP
}
func (x *SimplifiedConfig) GetDisableFallback() bool {
func (x *SimplifiedConfig) GetCacheStrategy() CacheStrategy {
if x != nil {
return x.DisableFallback
return x.CacheStrategy
}
return false
return CacheStrategy_CacheEnabled
}
func (x *SimplifiedConfig) GetDisableFallbackIfMatch() bool {
func (x *SimplifiedConfig) GetFallbackStrategy() FallbackStrategy {
if x != nil {
return x.DisableFallbackIfMatch
return x.FallbackStrategy
}
return false
return FallbackStrategy_Enabled
}
type SimplifiedHostMapping struct {
@ -601,10 +794,17 @@ type SimplifiedNameServer struct {
Address *net.Endpoint `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
ClientIp string `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
SkipFallback bool `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
Tag string `protobuf:"bytes,7,opt,name=tag,proto3" json:"tag,omitempty"`
PrioritizedDomain []*SimplifiedNameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
Geoip []*routercommon.GeoIP `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
OriginalRules []*SimplifiedNameServer_OriginalRule `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
// Deprecated. Use fallback_strategy.
//
// Deprecated: Do not use.
SkipFallback bool `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
QueryStrategy *QueryStrategy `protobuf:"varint,8,opt,name=query_strategy,json=queryStrategy,proto3,enum=v2ray.core.app.dns.QueryStrategy,oneof" json:"query_strategy,omitempty"`
CacheStrategy *CacheStrategy `protobuf:"varint,9,opt,name=cache_strategy,json=cacheStrategy,proto3,enum=v2ray.core.app.dns.CacheStrategy,oneof" json:"cache_strategy,omitempty"`
FallbackStrategy *FallbackStrategy `protobuf:"varint,10,opt,name=fallback_strategy,json=fallbackStrategy,proto3,enum=v2ray.core.app.dns.FallbackStrategy,oneof" json:"fallback_strategy,omitempty"`
}
func (x *SimplifiedNameServer) Reset() {
@ -653,11 +853,11 @@ func (x *SimplifiedNameServer) GetClientIp() string {
return ""
}
func (x *SimplifiedNameServer) GetSkipFallback() bool {
func (x *SimplifiedNameServer) GetTag() string {
if x != nil {
return x.SkipFallback
return x.Tag
}
return false
return ""
}
func (x *SimplifiedNameServer) GetPrioritizedDomain() []*SimplifiedNameServer_PriorityDomain {
@ -681,6 +881,35 @@ func (x *SimplifiedNameServer) GetOriginalRules() []*SimplifiedNameServer_Origin
return nil
}
// Deprecated: Do not use.
func (x *SimplifiedNameServer) GetSkipFallback() bool {
if x != nil {
return x.SkipFallback
}
return false
}
func (x *SimplifiedNameServer) GetQueryStrategy() QueryStrategy {
if x != nil && x.QueryStrategy != nil {
return *x.QueryStrategy
}
return QueryStrategy_USE_IP
}
func (x *SimplifiedNameServer) GetCacheStrategy() CacheStrategy {
if x != nil && x.CacheStrategy != nil {
return *x.CacheStrategy
}
return CacheStrategy_CacheEnabled
}
func (x *SimplifiedNameServer) GetFallbackStrategy() FallbackStrategy {
if x != nil && x.FallbackStrategy != nil {
return *x.FallbackStrategy
}
return FallbackStrategy_Enabled
}
type NameServer_PriorityDomain struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -914,179 +1143,249 @@ var file_app_dns_config_proto_rawDesc = []byte{
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0x72, 0x6f, 0x74, 0x6f, 0x33,
}
var (
@ -1101,53 +1400,65 @@ 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, 2)
var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 4)
var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
var file_app_dns_config_proto_goTypes = []interface{}{
(DomainMatchingType)(0), // 0: v2ray.core.app.dns.DomainMatchingType
(QueryStrategy)(0), // 1: v2ray.core.app.dns.QueryStrategy
(*NameServer)(nil), // 2: v2ray.core.app.dns.NameServer
(*HostMapping)(nil), // 3: v2ray.core.app.dns.HostMapping
(*Config)(nil), // 4: v2ray.core.app.dns.Config
(*SimplifiedConfig)(nil), // 5: v2ray.core.app.dns.SimplifiedConfig
(*SimplifiedHostMapping)(nil), // 6: v2ray.core.app.dns.SimplifiedHostMapping
(*SimplifiedNameServer)(nil), // 7: v2ray.core.app.dns.SimplifiedNameServer
(*NameServer_PriorityDomain)(nil), // 8: v2ray.core.app.dns.NameServer.PriorityDomain
(*NameServer_OriginalRule)(nil), // 9: v2ray.core.app.dns.NameServer.OriginalRule
nil, // 10: v2ray.core.app.dns.Config.HostsEntry
(*SimplifiedNameServer_PriorityDomain)(nil), // 11: v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain
(*SimplifiedNameServer_OriginalRule)(nil), // 12: v2ray.core.app.dns.SimplifiedNameServer.OriginalRule
(*net.Endpoint)(nil), // 13: v2ray.core.common.net.Endpoint
(*routercommon.GeoIP)(nil), // 14: v2ray.core.app.router.routercommon.GeoIP
(*net.IPOrDomain)(nil), // 15: v2ray.core.common.net.IPOrDomain
(CacheStrategy)(0), // 2: v2ray.core.app.dns.CacheStrategy
(FallbackStrategy)(0), // 3: v2ray.core.app.dns.FallbackStrategy
(*NameServer)(nil), // 4: v2ray.core.app.dns.NameServer
(*HostMapping)(nil), // 5: v2ray.core.app.dns.HostMapping
(*Config)(nil), // 6: v2ray.core.app.dns.Config
(*SimplifiedConfig)(nil), // 7: v2ray.core.app.dns.SimplifiedConfig
(*SimplifiedHostMapping)(nil), // 8: v2ray.core.app.dns.SimplifiedHostMapping
(*SimplifiedNameServer)(nil), // 9: v2ray.core.app.dns.SimplifiedNameServer
(*NameServer_PriorityDomain)(nil), // 10: v2ray.core.app.dns.NameServer.PriorityDomain
(*NameServer_OriginalRule)(nil), // 11: v2ray.core.app.dns.NameServer.OriginalRule
nil, // 12: v2ray.core.app.dns.Config.HostsEntry
(*SimplifiedNameServer_PriorityDomain)(nil), // 13: v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain
(*SimplifiedNameServer_OriginalRule)(nil), // 14: v2ray.core.app.dns.SimplifiedNameServer.OriginalRule
(*net.Endpoint)(nil), // 15: v2ray.core.common.net.Endpoint
(*routercommon.GeoIP)(nil), // 16: v2ray.core.app.router.routercommon.GeoIP
(*net.IPOrDomain)(nil), // 17: v2ray.core.common.net.IPOrDomain
}
var file_app_dns_config_proto_depIdxs = []int32{
13, // 0: v2ray.core.app.dns.NameServer.address:type_name -> v2ray.core.common.net.Endpoint
8, // 1: v2ray.core.app.dns.NameServer.prioritized_domain:type_name -> v2ray.core.app.dns.NameServer.PriorityDomain
14, // 2: v2ray.core.app.dns.NameServer.geoip:type_name -> v2ray.core.app.router.routercommon.GeoIP
9, // 3: v2ray.core.app.dns.NameServer.original_rules:type_name -> v2ray.core.app.dns.NameServer.OriginalRule
0, // 4: v2ray.core.app.dns.HostMapping.type:type_name -> v2ray.core.app.dns.DomainMatchingType
13, // 5: v2ray.core.app.dns.Config.NameServers:type_name -> v2ray.core.common.net.Endpoint
2, // 6: v2ray.core.app.dns.Config.name_server:type_name -> v2ray.core.app.dns.NameServer
10, // 7: v2ray.core.app.dns.Config.Hosts:type_name -> v2ray.core.app.dns.Config.HostsEntry
3, // 8: v2ray.core.app.dns.Config.static_hosts:type_name -> v2ray.core.app.dns.HostMapping
1, // 9: v2ray.core.app.dns.Config.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
7, // 10: v2ray.core.app.dns.SimplifiedConfig.name_server:type_name -> v2ray.core.app.dns.SimplifiedNameServer
3, // 11: v2ray.core.app.dns.SimplifiedConfig.static_hosts:type_name -> v2ray.core.app.dns.HostMapping
1, // 12: v2ray.core.app.dns.SimplifiedConfig.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
0, // 13: v2ray.core.app.dns.SimplifiedHostMapping.type:type_name -> v2ray.core.app.dns.DomainMatchingType
13, // 14: v2ray.core.app.dns.SimplifiedNameServer.address:type_name -> v2ray.core.common.net.Endpoint
11, // 15: v2ray.core.app.dns.SimplifiedNameServer.prioritized_domain:type_name -> v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain
14, // 16: v2ray.core.app.dns.SimplifiedNameServer.geoip:type_name -> v2ray.core.app.router.routercommon.GeoIP
12, // 17: v2ray.core.app.dns.SimplifiedNameServer.original_rules:type_name -> v2ray.core.app.dns.SimplifiedNameServer.OriginalRule
0, // 18: v2ray.core.app.dns.NameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
15, // 19: v2ray.core.app.dns.Config.HostsEntry.value:type_name -> v2ray.core.common.net.IPOrDomain
0, // 20: v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
21, // [21:21] is the sub-list for method output_type
21, // [21:21] is the sub-list for method input_type
21, // [21:21] is the sub-list for extension type_name
21, // [21:21] is the sub-list for extension extendee
0, // [0:21] is the sub-list for field type_name
15, // 0: v2ray.core.app.dns.NameServer.address:type_name -> v2ray.core.common.net.Endpoint
10, // 1: v2ray.core.app.dns.NameServer.prioritized_domain:type_name -> v2ray.core.app.dns.NameServer.PriorityDomain
16, // 2: v2ray.core.app.dns.NameServer.geoip:type_name -> v2ray.core.app.router.routercommon.GeoIP
11, // 3: v2ray.core.app.dns.NameServer.original_rules:type_name -> v2ray.core.app.dns.NameServer.OriginalRule
1, // 4: v2ray.core.app.dns.NameServer.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
2, // 5: v2ray.core.app.dns.NameServer.cache_strategy:type_name -> v2ray.core.app.dns.CacheStrategy
3, // 6: v2ray.core.app.dns.NameServer.fallback_strategy:type_name -> v2ray.core.app.dns.FallbackStrategy
0, // 7: v2ray.core.app.dns.HostMapping.type:type_name -> v2ray.core.app.dns.DomainMatchingType
15, // 8: v2ray.core.app.dns.Config.NameServers:type_name -> v2ray.core.common.net.Endpoint
4, // 9: v2ray.core.app.dns.Config.name_server:type_name -> v2ray.core.app.dns.NameServer
12, // 10: v2ray.core.app.dns.Config.Hosts:type_name -> v2ray.core.app.dns.Config.HostsEntry
5, // 11: v2ray.core.app.dns.Config.static_hosts:type_name -> v2ray.core.app.dns.HostMapping
1, // 12: v2ray.core.app.dns.Config.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
2, // 13: v2ray.core.app.dns.Config.cache_strategy:type_name -> v2ray.core.app.dns.CacheStrategy
3, // 14: v2ray.core.app.dns.Config.fallback_strategy:type_name -> v2ray.core.app.dns.FallbackStrategy
9, // 15: v2ray.core.app.dns.SimplifiedConfig.name_server:type_name -> v2ray.core.app.dns.SimplifiedNameServer
5, // 16: v2ray.core.app.dns.SimplifiedConfig.static_hosts:type_name -> v2ray.core.app.dns.HostMapping
1, // 17: v2ray.core.app.dns.SimplifiedConfig.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
2, // 18: v2ray.core.app.dns.SimplifiedConfig.cache_strategy:type_name -> v2ray.core.app.dns.CacheStrategy
3, // 19: v2ray.core.app.dns.SimplifiedConfig.fallback_strategy:type_name -> v2ray.core.app.dns.FallbackStrategy
0, // 20: v2ray.core.app.dns.SimplifiedHostMapping.type:type_name -> v2ray.core.app.dns.DomainMatchingType
15, // 21: v2ray.core.app.dns.SimplifiedNameServer.address:type_name -> v2ray.core.common.net.Endpoint
13, // 22: v2ray.core.app.dns.SimplifiedNameServer.prioritized_domain:type_name -> v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain
16, // 23: v2ray.core.app.dns.SimplifiedNameServer.geoip:type_name -> v2ray.core.app.router.routercommon.GeoIP
14, // 24: v2ray.core.app.dns.SimplifiedNameServer.original_rules:type_name -> v2ray.core.app.dns.SimplifiedNameServer.OriginalRule
1, // 25: v2ray.core.app.dns.SimplifiedNameServer.query_strategy:type_name -> v2ray.core.app.dns.QueryStrategy
2, // 26: v2ray.core.app.dns.SimplifiedNameServer.cache_strategy:type_name -> v2ray.core.app.dns.CacheStrategy
3, // 27: v2ray.core.app.dns.SimplifiedNameServer.fallback_strategy:type_name -> v2ray.core.app.dns.FallbackStrategy
0, // 28: v2ray.core.app.dns.NameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
17, // 29: v2ray.core.app.dns.Config.HostsEntry.value:type_name -> v2ray.core.common.net.IPOrDomain
0, // 30: v2ray.core.app.dns.SimplifiedNameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
31, // [31:31] is the sub-list for method output_type
31, // [31:31] is the sub-list for method input_type
31, // [31:31] is the sub-list for extension type_name
31, // [31:31] is the sub-list for extension extendee
0, // [0:31] is the sub-list for field type_name
}
func init() { file_app_dns_config_proto_init() }
@ -1277,12 +1588,14 @@ func file_app_dns_config_proto_init() {
}
}
}
file_app_dns_config_proto_msgTypes[0].OneofWrappers = []interface{}{}
file_app_dns_config_proto_msgTypes[5].OneofWrappers = []interface{}{}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_app_dns_config_proto_rawDesc,
NumEnums: 2,
NumEnums: 4,
NumMessages: 11,
NumExtensions: 0,
NumServices: 0,

62
app/dns/config.proto
View File

@ -15,7 +15,7 @@ import "common/protoext/extensions.proto";
message NameServer {
v2ray.core.common.net.Endpoint address = 1;
bytes client_ip = 5;
bool skipFallback = 6;
string tag = 7;
message PriorityDomain {
DomainMatchingType type = 1;
@ -30,6 +30,13 @@ message NameServer {
repeated PriorityDomain prioritized_domain = 2;
repeated v2ray.core.app.router.routercommon.GeoIP geoip = 3;
repeated OriginalRule original_rules = 4;
// Deprecated. Use fallback_strategy.
bool skipFallback = 6 [deprecated = true];
optional QueryStrategy query_strategy = 8;
optional CacheStrategy cache_strategy = 9;
optional FallbackStrategy fallback_strategy = 10;
}
enum DomainMatchingType {
@ -45,6 +52,16 @@ enum QueryStrategy {
USE_IP6 = 2;
}
enum CacheStrategy {
CacheEnabled = 0;
CacheDisabled = 1;
}
enum FallbackStrategy {
Enabled = 0;
Disabled = 1;
DisabledIfAnyMatch = 2;
}
message HostMapping {
DomainMatchingType type = 1;
@ -82,13 +99,23 @@ message Config {
reserved 7;
// DisableCache disables DNS cache
bool disableCache = 8;
// Deprecated. Use cache_strategy.
bool disableCache = 8 [deprecated = true];
// Deprecated. Use fallback_strategy.
bool disableFallback = 10 [deprecated = true];
// Deprecated. Use fallback_strategy.
bool disableFallbackIfMatch = 11 [deprecated = true];
// Default query strategy (IPv4, IPv6, or both) for each name server.
QueryStrategy query_strategy = 9;
bool disableFallback = 10;
// Default cache strategy for each name server.
CacheStrategy cache_strategy = 12;
bool disableFallbackIfMatch = 11;
// Default fallback strategy for each name server.
FallbackStrategy fallback_strategy = 13;
}
@ -121,13 +148,23 @@ message SimplifiedConfig {
reserved 7;
// DisableCache disables DNS cache
bool disableCache = 8;
// Deprecated. Use cache_strategy.
bool disableCache = 8 [deprecated = true];
// Deprecated. Use fallback_strategy.
bool disableFallback = 10 [deprecated = true];
// Deprecated. Use fallback_strategy.
bool disableFallbackIfMatch = 11 [deprecated = true];
// Default query strategy (IPv4, IPv6, or both) for each name server.
QueryStrategy query_strategy = 9;
bool disableFallback = 10;
// Default cache strategy for each name server.
CacheStrategy cache_strategy = 12;
bool disableFallbackIfMatch = 11;
// Default fallback strategy for each name server.
FallbackStrategy fallback_strategy = 13;
}
@ -145,7 +182,7 @@ message SimplifiedHostMapping {
message SimplifiedNameServer {
v2ray.core.common.net.Endpoint address = 1;
string client_ip = 5;
bool skipFallback = 6;
string tag = 7;
message PriorityDomain {
DomainMatchingType type = 1;
@ -160,4 +197,11 @@ message SimplifiedNameServer {
repeated PriorityDomain prioritized_domain = 2;
repeated v2ray.core.app.router.routercommon.GeoIP geoip = 3;
repeated OriginalRule original_rules = 4;
}
// Deprecated. Use fallback_strategy.
bool skipFallback = 6 [deprecated = true];
optional QueryStrategy query_strategy = 8;
optional CacheStrategy cache_strategy = 9;
optional FallbackStrategy fallback_strategy = 10;
}

292
app/dns/dns.go
View File

@ -28,16 +28,13 @@ import (
// DNS is a DNS rely server.
type DNS struct {
sync.Mutex
tag string
disableCache bool
disableFallback bool
disableFallbackIfMatch bool
ipOption *dns.IPOption
hosts *StaticHosts
clients []*Client
ctx context.Context
domainMatcher strmatcher.IndexMatcher
matcherInfos []DomainMatcherInfo
ipOption dns.IPOption
hosts *StaticHosts
clients []*Client
ctx context.Context
clientTags map[string]bool
domainMatcher strmatcher.IndexMatcher
matcherInfos []DomainMatcherInfo
}
// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
@ -48,88 +45,31 @@ type DomainMatcherInfo struct {
// New creates a new DNS server with given configuration.
func New(ctx context.Context, config *Config) (*DNS, error) {
var tag string
if len(config.Tag) > 0 {
tag = config.Tag
} else {
tag = generateRandomTag()
}
var clientIP net.IP
switch len(config.ClientIp) {
case 0, net.IPv4len, net.IPv6len:
clientIP = net.IP(config.ClientIp)
default:
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,
}
}
// Create static hosts
hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
if err != nil {
return nil, newError("failed to create hosts").Base(err)
}
// Create name servers from legacy configs
clients := []*Client{}
domainRuleCount := 0
for _, ns := range config.NameServer {
domainRuleCount += len(ns.PrioritizedDomain)
}
// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
matcherInfos := make([]DomainMatcherInfo, domainRuleCount+1)
domainMatcher := &strmatcher.LinearIndexMatcher{}
geoipContainer := router.GeoIPMatcherContainer{}
for _, endpoint := range config.NameServers {
features.PrintDeprecatedFeatureWarning("simple DNS server")
client, err := NewSimpleClient(ctx, endpoint, clientIP)
client, err := NewClient(ctx, &NameServer{Address: endpoint}, config)
if err != nil {
return nil, newError("failed to create client").Base(err)
}
clients = append(clients, client)
}
for _, ns := range config.NameServer {
clientIdx := len(clients)
updateDomain := func(domainRule strmatcher.Matcher, originalRuleIdx int, matcherInfos []DomainMatcherInfo) error {
midx := domainMatcher.Add(domainRule)
matcherInfos[midx] = DomainMatcherInfo{
clientIdx: uint16(clientIdx),
domainRuleIdx: uint16(originalRuleIdx),
}
return nil
}
myClientIP := clientIP
switch len(ns.ClientIp) {
case net.IPv4len, net.IPv6len:
myClientIP = net.IP(ns.ClientIp)
}
client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
// Create name servers
nsClientMap := map[int]int{}
for nsIdx, ns := range config.NameServer {
client, err := NewClient(ctx, ns, config)
if err != nil {
return nil, newError("failed to create client").Base(err)
}
nsClientMap[nsIdx] = len(clients)
clients = append(clients, client)
}
@ -138,20 +78,94 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
clients = append(clients, NewLocalDNSClient())
}
// Establish members related to global DNS state
domainMatcher, matcherInfos, err := establishDomainRules(config, clients, nsClientMap)
if err != nil {
return nil, err
}
if err := establishExpectedIPs(config, clients, nsClientMap); err != nil {
return nil, err
}
clientTags := make(map[string]bool)
for _, client := range clients {
clientTags[client.tag] = true
}
return &DNS{
tag: tag,
hosts: hosts,
ipOption: ipOption,
clients: clients,
ctx: ctx,
domainMatcher: domainMatcher,
matcherInfos: matcherInfos,
disableCache: config.DisableCache,
disableFallback: config.DisableFallback,
disableFallbackIfMatch: config.DisableFallbackIfMatch,
ipOption: toIPOption(config.QueryStrategy),
hosts: hosts,
clients: clients,
ctx: ctx,
clientTags: clientTags,
domainMatcher: domainMatcher,
matcherInfos: matcherInfos,
}, nil
}
func establishDomainRules(config *Config, clients []*Client, nsClientMap map[int]int) (strmatcher.IndexMatcher, []DomainMatcherInfo, error) {
domainRuleCount := 0
for _, ns := range config.NameServer {
domainRuleCount += len(ns.PrioritizedDomain)
}
// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
matcherInfos := make([]DomainMatcherInfo, domainRuleCount+1)
domainMatcher := &strmatcher.LinearIndexMatcher{}
for nsIdx, ns := range config.NameServer {
clientIdx := nsClientMap[nsIdx]
var rules []string
ruleCurr := 0
ruleIter := 0
for _, domain := range ns.PrioritizedDomain {
domainRule, err := toStrMatcher(domain.Type, domain.Domain)
if err != nil {
return nil, nil, newError("failed to create prioritized domain").Base(err).AtWarning()
}
originalRuleIdx := ruleCurr
if ruleCurr < len(ns.OriginalRules) {
rule := ns.OriginalRules[ruleCurr]
if ruleCurr >= len(rules) {
rules = append(rules, rule.Rule)
}
ruleIter++
if ruleIter >= int(rule.Size) {
ruleIter = 0
ruleCurr++
}
} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
rules = append(rules, domainRule.String())
ruleCurr++
}
midx := domainMatcher.Add(domainRule)
matcherInfos[midx] = DomainMatcherInfo{
clientIdx: uint16(clientIdx),
domainRuleIdx: uint16(originalRuleIdx),
}
if err != nil {
return nil, nil, newError("failed to create prioritized domain").Base(err).AtWarning()
}
}
clients[clientIdx].domains = rules
}
return domainMatcher, matcherInfos, nil
}
func establishExpectedIPs(config *Config, clients []*Client, nsClientMap map[int]int) error {
geoipContainer := router.GeoIPMatcherContainer{}
for nsIdx, ns := range config.NameServer {
clientIdx := nsClientMap[nsIdx]
var matchers []*router.GeoIPMatcher
for _, geoip := range ns.Geoip {
matcher, err := geoipContainer.Add(geoip)
if err != nil {
return newError("failed to create ip matcher").Base(err).AtWarning()
}
matchers = append(matchers, matcher)
}
clients[clientIdx].expectIPs = matchers
}
return nil
}
// Type implements common.HasType.
func (*DNS) Type() interface{} {
return dns.ClientType()
@ -170,32 +184,28 @@ func (s *DNS) Close() error {
// IsOwnLink implements proxy.dns.ownLinkVerifier
func (s *DNS) IsOwnLink(ctx context.Context) bool {
inbound := session.InboundFromContext(ctx)
return inbound != nil && inbound.Tag == s.tag
return inbound != nil && s.clientTags[inbound.Tag]
}
// LookupIP implements dns.Client.
func (s *DNS) LookupIP(domain string) ([]net.IP, error) {
return s.lookupIPInternal(domain, *s.ipOption)
return s.lookupIPInternal(domain, s.ipOption)
}
// LookupIPv4 implements dns.IPv4Lookup.
func (s *DNS) LookupIPv4(domain string) ([]net.IP, error) {
if !s.ipOption.IPv4Enable {
return nil, dns.ErrEmptyResponse
if option := s.ipOption.With(dns.IPOption{IPv4Enable: true}); option.IsValid() {
return s.lookupIPInternal(domain, option)
}
o := *s.ipOption
o.IPv6Enable = false
return s.lookupIPInternal(domain, o)
return nil, dns.ErrEmptyResponse
}
// LookupIPv6 implements dns.IPv6Lookup.
func (s *DNS) LookupIPv6(domain string) ([]net.IP, error) {
if !s.ipOption.IPv6Enable {
return nil, dns.ErrEmptyResponse
if option := s.ipOption.With(dns.IPOption{IPv6Enable: true}); option.IsValid() {
return s.lookupIPInternal(domain, option)
}
o := *s.ipOption
o.IPv4Enable = false
return s.lookupIPInternal(domain, o)
return nil, dns.ErrEmptyResponse
}
func (s *DNS) lookupIPInternal(domain string, option dns.IPOption) ([]net.IP, error) {
@ -222,22 +232,19 @@ func (s *DNS) lookupIPInternal(domain string, option dns.IPOption) ([]net.IP, er
// Name servers lookup
errs := []error{}
ctx := session.ContextWithInbound(s.ctx, &session.Inbound{Tag: s.tag})
for _, client := range s.sortClients(domain) {
if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
newError("skip DNS resolution for domain ", domain, " at server ", client.Name()).AtDebug().WriteToLog()
continue
}
ips, err := client.QueryIP(ctx, domain, option, s.disableCache)
for _, client := range s.sortClients(domain, option) {
ips, err := client.QueryIP(s.ctx, domain, option)
if len(ips) > 0 {
return ips, nil
}
if err != nil {
newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
errs = append(errs, err)
}
if err != dns.ErrEmptyResponse { // ErrEmptyResponse is not seen as failure, so no failed log
newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
}
if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
return nil, err
return nil, err // Continues lookup for certain errors
}
}
@ -246,7 +253,7 @@ func (s *DNS) lookupIPInternal(domain string, option dns.IPOption) ([]net.IP, er
// GetIPOption implements ClientWithIPOption.
func (s *DNS) GetIPOption() *dns.IPOption {
return s.ipOption
return &s.ipOption
}
// SetQueryOption implements ClientWithIPOption.
@ -260,51 +267,52 @@ func (s *DNS) SetFakeDNSOption(isFakeEnable bool) {
s.ipOption.FakeEnable = isFakeEnable
}
func (s *DNS) sortClients(domain string) []*Client {
func (s *DNS) sortClients(domain string, option dns.IPOption) []*Client {
clients := make([]*Client, 0, len(s.clients))
clientUsed := make([]bool, len(s.clients))
clientNames := make([]string, 0, len(s.clients))
domainRules := []string{}
// Priority domain matching
hasMatch := false
for _, match := range s.domainMatcher.Match(domain) {
info := s.matcherInfos[match]
client := s.clients[info.clientIdx]
domainRule := client.domains[info.domainRuleIdx]
domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", domainRule, info.clientIdx))
if clientUsed[info.clientIdx] {
switch {
case clientUsed[info.clientIdx]:
continue
case !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS"):
continue
}
clientUsed[info.clientIdx] = true
clients = append(clients, client)
clientNames = append(clientNames, client.Name())
hasMatch = true
}
if !(s.disableFallback || s.disableFallbackIfMatch && hasMatch) {
// Default round-robin query
for idx, client := range s.clients {
if clientUsed[idx] || client.skipFallback {
continue
}
clientUsed[idx] = true
clients = append(clients, client)
clientNames = append(clientNames, client.Name())
// Default round-robin query
hasDomainMatch := len(clients) > 0
for idx, client := range s.clients {
switch {
case clientUsed[idx]:
continue
case !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS"):
continue
case client.fallbackStrategy == FallbackStrategy_Disabled:
continue
case client.fallbackStrategy == FallbackStrategy_DisabledIfAnyMatch && hasDomainMatch:
continue
}
clientUsed[idx] = true
clients = append(clients, client)
clientNames = append(clientNames, client.Name())
}
if len(domainRules) > 0 {
newError("domain ", domain, " matches following rules: ", domainRules).AtDebug().WriteToLog()
}
if len(clientNames) > 0 {
newError("domain ", domain, " will use DNS in order: ", clientNames).AtDebug().WriteToLog()
}
if len(clients) == 0 {
clients = append(clients, s.clients[0])
clientNames = append(clientNames, s.clients[0].Name())
newError("domain ", domain, " will use the first DNS: ", clientNames).AtDebug().WriteToLog()
newError("domain ", domain, " will use DNS in order: ", clientNames, " ", toReqTypes(option)).AtDebug().WriteToLog()
}
return clients
@ -354,10 +362,14 @@ func init() {
for _, v := range simplifiedConfig.NameServer {
nameserver := &NameServer{
Address: v.Address,
ClientIp: net.ParseIP(v.ClientIp),
SkipFallback: v.SkipFallback,
Geoip: v.Geoip,
Address: v.Address,
ClientIp: net.ParseIP(v.ClientIp),
Tag: v.Tag,
QueryStrategy: v.QueryStrategy,
CacheStrategy: v.CacheStrategy,
FallbackStrategy: v.FallbackStrategy,
SkipFallback: v.SkipFallback,
Geoip: v.Geoip,
}
for _, prioritizedDomain := range v.PrioritizedDomain {
nameserver.PrioritizedDomain = append(nameserver.PrioritizedDomain, &NameServer_PriorityDomain{
@ -369,13 +381,17 @@ func init() {
}
fullConfig := &Config{
NameServer: nameservers,
ClientIp: net.ParseIP(simplifiedConfig.ClientIp),
StaticHosts: simplifiedConfig.StaticHosts,
Tag: simplifiedConfig.Tag,
DisableCache: simplifiedConfig.DisableCache,
QueryStrategy: simplifiedConfig.QueryStrategy,
DisableFallback: simplifiedConfig.DisableFallback,
StaticHosts: simplifiedConfig.StaticHosts,
NameServer: nameservers,
ClientIp: net.ParseIP(simplifiedConfig.ClientIp),
Tag: simplifiedConfig.Tag,
QueryStrategy: simplifiedConfig.QueryStrategy,
CacheStrategy: simplifiedConfig.CacheStrategy,
FallbackStrategy: simplifiedConfig.FallbackStrategy,
// Deprecated flags
DisableCache: simplifiedConfig.DisableCache,
DisableFallback: simplifiedConfig.DisableFallback,
DisableFallbackIfMatch: simplifiedConfig.DisableFallbackIfMatch,
}
return common.CreateObject(ctx, fullConfig)
}))

182
app/dns/nameserver.go
View File

@ -10,7 +10,8 @@ import (
"github.com/v2fly/v2ray-core/v5/app/router"
"github.com/v2fly/v2ray-core/v5/common/errors"
"github.com/v2fly/v2ray-core/v5/common/net"
"github.com/v2fly/v2ray-core/v5/common/strmatcher"
"github.com/v2fly/v2ray-core/v5/common/session"
"github.com/v2fly/v2ray-core/v5/features"
"github.com/v2fly/v2ray-core/v5/features/dns"
"github.com/v2fly/v2ray-core/v5/features/routing"
)
@ -25,11 +26,16 @@ type Server interface {
// Client is the interface for DNS client.
type Client struct {
server Server
clientIP net.IP
skipFallback bool
domains []string
expectIPs []*router.GeoIPMatcher
server Server
clientIP net.IP
tag string
queryStrategy dns.IPOption
cacheStrategy CacheStrategy
fallbackStrategy FallbackStrategy
domains []string
expectIPs []*router.GeoIPMatcher
}
var errExpectedIPNonMatch = errors.New("expectIPs not match")
@ -68,117 +74,79 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, err
}
// NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container router.GeoIPMatcherContainer, matcherInfos *[]DomainMatcherInfo, updateDomainRule func(strmatcher.Matcher, int, []DomainMatcherInfo) error) (*Client, error) {
func NewClient(ctx context.Context, ns *NameServer, dns *Config) (*Client, error) {
client := &Client{}
// Create DNS server instance
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
// Create a new server for each client for now
server, err := NewServer(ns.Address.AsDestination(), dispatcher)
if err != nil {
return newError("failed to create nameserver").Base(err).AtWarning()
}
// Priotize local domains with specific TLDs or without any dot to local DNS
if _, isLocalDNS := server.(*LocalNameServer); isLocalDNS {
ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
// The following lines is a solution to avoid core panics（rule index out of range） when setting `localhost` DNS client in config.
// Because the `localhost` DNS client will apend len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
// But `matcherInfos` has no enough length to add rules, which leads to core panics (rule index out of range).
// To avoid this, the length of `matcherInfos` must be equal to the expected, so manually append it with Golang default zero value first for later modification.
// Related issues:
// https://github.com/v2fly/v2ray-core/issues/529
// https://github.com/v2fly/v2ray-core/issues/719
for i := 0; i < len(localTLDsAndDotlessDomains); i++ {
*matcherInfos = append(*matcherInfos, DomainMatcherInfo{
clientIdx: uint16(0),
domainRuleIdx: uint16(0),
})
}
}
// Establish domain rules
var rules []string
ruleCurr := 0
ruleIter := 0
for _, domain := range ns.PrioritizedDomain {
domainRule, err := toStrMatcher(domain.Type, domain.Domain)
if err != nil {
return newError("failed to create prioritized domain").Base(err).AtWarning()
}
originalRuleIdx := ruleCurr
if ruleCurr < len(ns.OriginalRules) {
rule := ns.OriginalRules[ruleCurr]
if ruleCurr >= len(rules) {
rules = append(rules, rule.Rule)
}
ruleIter++
if ruleIter >= int(rule.Size) {
ruleIter = 0
ruleCurr++
}
} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
rules = append(rules, domainRule.String())
ruleCurr++
}
err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
if err != nil {
return newError("failed to create prioritized domain").Base(err).AtWarning()
}
}
// Establish expected IPs
var matchers []*router.GeoIPMatcher
for _, geoip := range ns.Geoip {
matcher, err := container.Add(geoip)
if err != nil {
return newError("failed to create ip matcher").Base(err).AtWarning()
}
matchers = append(matchers, matcher)
}
if len(clientIP) > 0 {
switch ns.Address.Address.GetAddress().(type) {
case *net.IPOrDomain_Domain:
newError("DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
case *net.IPOrDomain_Ip:
newError("DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
}
}
client.server = server
client.clientIP = clientIP
client.skipFallback = ns.SkipFallback
client.domains = rules
client.expectIPs = matchers
return nil
})
return client, err
}
if err != nil {
return nil, err
}
// NewSimpleClient creates a DNS client with a simple destination.
func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
client := &Client{}
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
server, err := NewServer(endpoint.AsDestination(), dispatcher)
if err != nil {
return newError("failed to create nameserver").Base(err).AtWarning()
// Initialize fields with default values
if len(ns.Tag) == 0 {
ns.Tag = dns.Tag
if len(ns.Tag) == 0 {
ns.Tag = generateRandomTag()
}
client.server = server
client.clientIP = clientIP
return nil
})
if len(clientIP) > 0 {
switch endpoint.Address.GetAddress().(type) {
case *net.IPOrDomain_Domain:
newError("DNS: client ", endpoint.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
case *net.IPOrDomain_Ip:
newError("DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
}
if len(ns.ClientIp) == 0 {
ns.ClientIp = dns.ClientIp
}
if ns.QueryStrategy == nil {
ns.QueryStrategy = &dns.QueryStrategy
}
if ns.CacheStrategy == nil {
ns.CacheStrategy = new(CacheStrategy)
switch {
case dns.CacheStrategy != CacheStrategy_CacheEnabled:
*ns.CacheStrategy = dns.CacheStrategy
case dns.DisableCache:
features.PrintDeprecatedFeatureWarning("DNS disableCache settings")
*ns.CacheStrategy = CacheStrategy_CacheDisabled
}
}
if ns.FallbackStrategy == nil {
ns.FallbackStrategy = new(FallbackStrategy)
switch {
case ns.SkipFallback:
features.PrintDeprecatedFeatureWarning("DNS server skipFallback settings")
*ns.FallbackStrategy = FallbackStrategy_Disabled
case dns.FallbackStrategy != FallbackStrategy_Enabled:
*ns.FallbackStrategy = dns.FallbackStrategy
case dns.DisableFallback:
features.PrintDeprecatedFeatureWarning("DNS disableFallback settings")
*ns.FallbackStrategy = FallbackStrategy_Disabled
case dns.DisableFallbackIfMatch:
features.PrintDeprecatedFeatureWarning("DNS disableFallbackIfMatch settings")
*ns.FallbackStrategy = FallbackStrategy_DisabledIfAnyMatch
}
}
return client, err
// Priotize local domains with specific TLDs or without any dot to local DNS
if strings.EqualFold(ns.Address.Address.GetDomain(), "localhost") {
ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
}
if len(ns.ClientIp) > 0 {
newError("DNS: client ", ns.Address.Address.AsAddress(), " uses clientIP ", net.IP(ns.ClientIp).String()).AtInfo().WriteToLog()
}
client.clientIP = ns.ClientIp
client.tag = ns.Tag
client.queryStrategy = toIPOption(*ns.QueryStrategy)
client.cacheStrategy = *ns.CacheStrategy
client.fallbackStrategy = *ns.FallbackStrategy
return client, nil
}
// Name returns the server name the client manages.
@ -187,9 +155,17 @@ func (c *Client) Name() string {
}
// QueryIP send DNS query to the name server with the client's IP.
func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption, disableCache bool) ([]net.IP, error) {
func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption) ([]net.IP, error) {
queryOption := option.With(c.queryStrategy)
if !queryOption.IsValid() {
newError(c.server.Name(), " returns empty answer: ", domain, ". ", toReqTypes(option)).AtInfo().WriteToLog()
return nil, dns.ErrEmptyResponse
}
disableCache := c.cacheStrategy == CacheStrategy_CacheDisabled
ctx = session.ContextWithInbound(ctx, &session.Inbound{Tag: c.tag})
ctx, cancel := context.WithTimeout(ctx, 4*time.Second)
ips, err := c.server.QueryIP(ctx, domain, c.clientIP, option, disableCache)
ips, err := c.server.QueryIP(ctx, domain, c.clientIP, queryOption, disableCache)
cancel()
if err != nil {

12
features/dns/client.go
View File

@ -14,6 +14,18 @@ type IPOption struct {
FakeEnable bool
}
func (opt IPOption) With(other IPOption) IPOption {
return IPOption{
IPv4Enable: opt.IPv4Enable && other.IPv4Enable,
IPv6Enable: opt.IPv6Enable && other.IPv6Enable,
FakeEnable: opt.FakeEnable && other.FakeEnable,
}
}
func (opt IPOption) IsValid() bool {
return opt.IPv4Enable || opt.IPv6Enable
}
// Client is a V2Ray feature for querying DNS information.
//
// v2ray:api:stable

94
infra/conf/synthetic/dns/dns.go
View File

@ -18,12 +18,16 @@ import (
)
type NameServerConfig struct {
Address *cfgcommon.Address
ClientIP *cfgcommon.Address
Port uint16
SkipFallback bool
Domains []string
ExpectIPs cfgcommon.StringList
Address *cfgcommon.Address
ClientIP *cfgcommon.Address
Port uint16
Tag string
QueryStrategy string
CacheStrategy string
FallbackStrategy string
SkipFallback bool
Domains []string
ExpectIPs cfgcommon.StringList
cfgctx context.Context
}
@ -36,17 +40,25 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
}
var advanced struct {
Address *cfgcommon.Address `json:"address"`
ClientIP *cfgcommon.Address `json:"clientIp"`
Port uint16 `json:"port"`
SkipFallback bool `json:"skipFallback"`
Domains []string `json:"domains"`
ExpectIPs cfgcommon.StringList `json:"expectIps"`
Address *cfgcommon.Address `json:"address"`
ClientIP *cfgcommon.Address `json:"clientIp"`
Port uint16 `json:"port"`
Tag string `json:"tag"`
QueryStrategy string `json:"queryStrategy"`
CacheStrategy string `json:"cacheStrategy"`
FallbackStrategy string `json:"fallbackStrategy"`
SkipFallback bool `json:"skipFallback"`
Domains []string `json:"domains"`
ExpectIPs cfgcommon.StringList `json:"expectIps"`
}
if err := json.Unmarshal(data, &advanced); err == nil {
c.Address = advanced.Address
c.ClientIP = advanced.ClientIP
c.Port = advanced.Port
c.Tag = advanced.Tag
c.QueryStrategy = advanced.QueryStrategy
c.CacheStrategy = advanced.CacheStrategy
c.FallbackStrategy = advanced.FallbackStrategy
c.SkipFallback = advanced.SkipFallback
c.Domains = advanced.Domains
c.ExpectIPs = advanced.ExpectIPs
@ -117,6 +129,40 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
myClientIP = []byte(c.ClientIP.IP())
}
queryStrategy := new(dns.QueryStrategy)
switch strings.ToLower(c.QueryStrategy) {
case "useip", "use_ip", "use-ip":
*queryStrategy = dns.QueryStrategy_USE_IP
case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
*queryStrategy = dns.QueryStrategy_USE_IP4
case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
*queryStrategy = dns.QueryStrategy_USE_IP6
default:
queryStrategy = nil
}
cacheStrategy := new(dns.CacheStrategy)
switch strings.ToLower(c.CacheStrategy) {
case "enabled":
*cacheStrategy = dns.CacheStrategy_CacheEnabled
case "disabled":
*cacheStrategy = dns.CacheStrategy_CacheDisabled
default:
cacheStrategy = nil
}
fallbackStrategy := new(dns.FallbackStrategy)
switch strings.ToLower(c.FallbackStrategy) {
case "enabled":
*fallbackStrategy = dns.FallbackStrategy_Enabled
case "disabled":
*fallbackStrategy = dns.FallbackStrategy_Disabled
case "disabledifanymatch", "disabled_if_any_match", "disabled-if-any-match":
*fallbackStrategy = dns.FallbackStrategy_DisabledIfAnyMatch
default:
fallbackStrategy = nil
}
return &dns.NameServer{
Address: &net.Endpoint{
Network: net.Network_UDP,
@ -124,7 +170,11 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
Port: uint32(c.Port),
},
ClientIp: myClientIP,
Tag: c.Tag,
SkipFallback: c.SkipFallback,
QueryStrategy: queryStrategy,
CacheStrategy: cacheStrategy,
FallbackStrategy: fallbackStrategy,
PrioritizedDomain: domains,
Geoip: geoipList,
OriginalRules: originalRules,
@ -145,6 +195,8 @@ type DNSConfig struct { // nolint: revive
ClientIP *cfgcommon.Address `json:"clientIp"`
Tag string `json:"tag"`
QueryStrategy string `json:"queryStrategy"`
CacheStrategy string `json:"cacheStrategy"`
FallbackStrategy string `json:"fallbackStrategy"`
DisableCache bool `json:"disableCache"`
DisableFallback bool `json:"disableFallback"`
DisableFallbackIfMatch bool `json:"disableFallbackIfMatch"`
@ -245,6 +297,24 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
config.QueryStrategy = dns.QueryStrategy_USE_IP6
}
config.CacheStrategy = dns.CacheStrategy_CacheEnabled
switch strings.ToLower(c.CacheStrategy) {
case "enabled":
config.CacheStrategy = dns.CacheStrategy_CacheEnabled
case "disabled":
config.CacheStrategy = dns.CacheStrategy_CacheDisabled
}
config.FallbackStrategy = dns.FallbackStrategy_Enabled
switch strings.ToLower(c.FallbackStrategy) {
case "enabled":
config.FallbackStrategy = dns.FallbackStrategy_Enabled
case "disabled":
config.FallbackStrategy = dns.FallbackStrategy_Disabled
case "disabledifanymatch", "disabled_if_any_match", "disabled-if-any-match":
config.FallbackStrategy = dns.FallbackStrategy_DisabledIfAnyMatch
}
for _, server := range c.Servers {
server.cfgctx = c.cfgctx
ns, err := server.Build()