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Code Issues Releases Wiki Activity

Merge pull request #98 from Vigilans/vigilans/dns-server-matcher-info

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Refactor & Log rules matching of built-in DNS's domain matcher
This commit is contained in:
Kslr 2020-08-18 01:01:06 +08:00 committed by GitHub
commit dabefc6338
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 296 additions and 106 deletions
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247
app/dns/config.pb.go
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@ -1,3 +1,9 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.25.0
// protoc (unknown)
// source: v2ray.com/core/app/dns/config.proto
package dns
import (
@ -81,6 +87,7 @@ type NameServer struct {
Address *net.Endpoint `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
Geoip []*router.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"`
}
func (x *NameServer) Reset() {
@ -136,6 +143,13 @@ func (x *NameServer) GetGeoip() []*router.GeoIP {
return nil
}
func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
if x != nil {
return x.OriginalRules
}
return nil
}
type Config struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -145,14 +159,14 @@ type Config struct {
// A special value 'localhost' as a domain address can be set to use DNS on local system.
//
// Deprecated: Do not use.
NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,proto3" json:"NameServers,omitempty"`
NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,json=nameServers,proto3" json:"NameServers,omitempty"`
// NameServer list used by this DNS client.
NameServer []*NameServer `protobuf:"bytes,5,rep,name=name_server,json=nameServer,proto3" json:"name_server,omitempty"`
// Static hosts. Domain to IP.
// Deprecated. Use static_hosts.
//
// Deprecated: Do not use.
Hosts map[string]*net.IPOrDomain `protobuf:"bytes,2,rep,name=Hosts,proto3" json:"Hosts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
Hosts map[string]*net.IPOrDomain `protobuf:"bytes,2,rep,name=Hosts,json=hosts,proto3" json:"Hosts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
// Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes (IPv6).
ClientIp []byte `protobuf:"bytes,3,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
StaticHosts []*Config_HostMapping `protobuf:"bytes,4,rep,name=static_hosts,json=staticHosts,proto3" json:"static_hosts,omitempty"`
@ -291,6 +305,61 @@ func (x *NameServer_PriorityDomain) GetDomain() string {
return ""
}
type NameServer_OriginalRule struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Rule string `protobuf:"bytes,1,opt,name=rule,proto3" json:"rule,omitempty"`
Size uint32 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
}
func (x *NameServer_OriginalRule) Reset() {
*x = NameServer_OriginalRule{}
if protoimpl.UnsafeEnabled {
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *NameServer_OriginalRule) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*NameServer_OriginalRule) ProtoMessage() {}
func (x *NameServer_OriginalRule) ProtoReflect() protoreflect.Message {
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use NameServer_OriginalRule.ProtoReflect.Descriptor instead.
func (*NameServer_OriginalRule) Descriptor() ([]byte, []int) {
return file_v2ray_com_core_app_dns_config_proto_rawDescGZIP(), []int{0, 1}
}
func (x *NameServer_OriginalRule) GetRule() string {
if x != nil {
return x.Rule
}
return ""
}
func (x *NameServer_OriginalRule) GetSize() uint32 {
if x != nil {
return x.Size
}
return 0
}
type Config_HostMapping struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -307,7 +376,7 @@ type Config_HostMapping struct {
func (x *Config_HostMapping) Reset() {
*x = Config_HostMapping{}
if protoimpl.UnsafeEnabled {
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[4]
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[5]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
@ -320,7 +389,7 @@ func (x *Config_HostMapping) String() string {
func (*Config_HostMapping) ProtoMessage() {}
func (x *Config_HostMapping) ProtoReflect() protoreflect.Message {
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[4]
mi := &file_v2ray_com_core_app_dns_config_proto_msgTypes[5]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
@ -378,7 +447,7 @@ var file_v2ray_com_core_app_dns_config_proto_rawDesc = []byte{
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@ -392,58 +461,66 @@ var file_v2ray_com_core_app_dns_config_proto_rawDesc = []byte{
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}
var (
@ -459,34 +536,36 @@ func file_v2ray_com_core_app_dns_config_proto_rawDescGZIP() []byte {
}
var file_v2ray_com_core_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_v2ray_com_core_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
var file_v2ray_com_core_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
var file_v2ray_com_core_app_dns_config_proto_goTypes = []interface{}{
(DomainMatchingType)(0), // 0: v2ray.core.app.dns.DomainMatchingType
(*NameServer)(nil), // 1: v2ray.core.app.dns.NameServer
(*Config)(nil), // 2: v2ray.core.app.dns.Config
(*NameServer_PriorityDomain)(nil), // 3: v2ray.core.app.dns.NameServer.PriorityDomain
nil, // 4: v2ray.core.app.dns.Config.HostsEntry
(*Config_HostMapping)(nil), // 5: v2ray.core.app.dns.Config.HostMapping
(*net.Endpoint)(nil), // 6: v2ray.core.common.net.Endpoint
(*router.GeoIP)(nil), // 7: v2ray.core.app.router.GeoIP
(*net.IPOrDomain)(nil), // 8: v2ray.core.common.net.IPOrDomain
(*NameServer_OriginalRule)(nil), // 4: v2ray.core.app.dns.NameServer.OriginalRule
nil, // 5: v2ray.core.app.dns.Config.HostsEntry
(*Config_HostMapping)(nil), // 6: v2ray.core.app.dns.Config.HostMapping
(*net.Endpoint)(nil), // 7: v2ray.core.common.net.Endpoint
(*router.GeoIP)(nil), // 8: v2ray.core.app.router.GeoIP
(*net.IPOrDomain)(nil), // 9: v2ray.core.common.net.IPOrDomain
}
var file_v2ray_com_core_app_dns_config_proto_depIdxs = []int32{
6, // 0: v2ray.core.app.dns.NameServer.address:type_name -> v2ray.core.common.net.Endpoint
7, // 0: v2ray.core.app.dns.NameServer.address:type_name -> v2ray.core.common.net.Endpoint
3, // 1: v2ray.core.app.dns.NameServer.prioritized_domain:type_name -> v2ray.core.app.dns.NameServer.PriorityDomain
7, // 2: v2ray.core.app.dns.NameServer.geoip:type_name -> v2ray.core.app.router.GeoIP
6, // 3: v2ray.core.app.dns.Config.NameServers:type_name -> v2ray.core.common.net.Endpoint
1, // 4: v2ray.core.app.dns.Config.name_server:type_name -> v2ray.core.app.dns.NameServer
4, // 5: v2ray.core.app.dns.Config.Hosts:type_name -> v2ray.core.app.dns.Config.HostsEntry
5, // 6: v2ray.core.app.dns.Config.static_hosts:type_name -> v2ray.core.app.dns.Config.HostMapping
0, // 7: v2ray.core.app.dns.NameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
8, // 8: v2ray.core.app.dns.Config.HostsEntry.value:type_name -> v2ray.core.common.net.IPOrDomain
0, // 9: v2ray.core.app.dns.Config.HostMapping.type:type_name -> v2ray.core.app.dns.DomainMatchingType
10, // [10:10] is the sub-list for method output_type
10, // [10:10] is the sub-list for method input_type
10, // [10:10] is the sub-list for extension type_name
10, // [10:10] is the sub-list for extension extendee
0, // [0:10] is the sub-list for field type_name
8, // 2: v2ray.core.app.dns.NameServer.geoip:type_name -> v2ray.core.app.router.GeoIP
4, // 3: v2ray.core.app.dns.NameServer.original_rules:type_name -> v2ray.core.app.dns.NameServer.OriginalRule
7, // 4: v2ray.core.app.dns.Config.NameServers:type_name -> v2ray.core.common.net.Endpoint
1, // 5: v2ray.core.app.dns.Config.name_server:type_name -> v2ray.core.app.dns.NameServer
5, // 6: v2ray.core.app.dns.Config.Hosts:type_name -> v2ray.core.app.dns.Config.HostsEntry
6, // 7: v2ray.core.app.dns.Config.static_hosts:type_name -> v2ray.core.app.dns.Config.HostMapping
0, // 8: v2ray.core.app.dns.NameServer.PriorityDomain.type:type_name -> v2ray.core.app.dns.DomainMatchingType
9, // 9: v2ray.core.app.dns.Config.HostsEntry.value:type_name -> v2ray.core.common.net.IPOrDomain
0, // 10: v2ray.core.app.dns.Config.HostMapping.type:type_name -> v2ray.core.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
}
func init() { file_v2ray_com_core_app_dns_config_proto_init() }
@ -531,7 +610,19 @@ func file_v2ray_com_core_app_dns_config_proto_init() {
return nil
}
}
file_v2ray_com_core_app_dns_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
file_v2ray_com_core_app_dns_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*NameServer_OriginalRule); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_v2ray_com_core_app_dns_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Config_HostMapping); i {
case 0:
return &v.state
@ -550,7 +641,7 @@ func file_v2ray_com_core_app_dns_config_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_v2ray_com_core_app_dns_config_proto_rawDesc,
NumEnums: 1,
NumMessages: 5,
NumMessages: 6,
NumExtensions: 0,
NumServices: 0,
},

6
app/dns/config.proto
View File

@ -18,8 +18,14 @@ message NameServer {
string domain = 2;
}
message OriginalRule {
string rule = 1;
uint32 size = 2;
}
repeated PriorityDomain prioritized_domain = 2;
repeated v2ray.core.app.router.GeoIP geoip = 3;
repeated OriginalRule original_rules = 4;
}
enum DomainMatchingType {

99
app/dns/server.go
View File

@ -6,6 +6,7 @@ package dns
import (
"context"
"fmt"
"log"
"net/url"
"strings"
@ -28,13 +29,20 @@ import (
// Server is a DNS rely server.
type Server struct {
sync.Mutex
hosts *StaticHosts
clients []Client
clientIP net.IP
domainMatcher strmatcher.IndexMatcher
domainIndexMap map[uint32]uint32
ipIndexMap map[uint32]*MultiGeoIPMatcher
tag string
hosts *StaticHosts
clientIP net.IP
clients []Client // clientIdx -> Client
ipIndexMap []*MultiGeoIPMatcher // clientIdx -> *MultiGeoIPMatcher
domainRules [][]string // clientIdx -> domainRuleIdx -> DomainRule
domainMatcher strmatcher.IndexMatcher
matcherInfos []DomainMatcherInfo // matcherIdx -> DomainMatcherInfo
tag string
}
// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
type DomainMatcherInfo struct {
clientIdx uint16
domainRuleIdx uint16
}
// MultiGeoIPMatcher for match
@ -139,6 +147,7 @@ func New(ctx context.Context, config *Config) (*Server, error) {
}))
}
}
server.ipIndexMap = append(server.ipIndexMap, nil)
return len(server.clients) - 1
}
@ -150,22 +159,54 @@ func New(ctx context.Context, config *Config) (*Server, error) {
}
if len(config.NameServer) > 0 {
domainMatcher := &strmatcher.MatcherGroup{}
domainIndexMap := make(map[uint32]uint32)
ipIndexMap := make(map[uint32]*MultiGeoIPMatcher)
var geoIPMatcherContainer router.GeoIPMatcherContainer
clientIndices := []int{}
domainRuleCount := 0
for _, ns := range config.NameServer {
idx := addNameServer(ns)
clientIndices = append(clientIndices, idx)
domainRuleCount += len(ns.PrioritizedDomain)
}
domainRules := make([][]string, len(server.clients))
domainMatcher := &strmatcher.MatcherGroup{}
matcherInfos := make([]DomainMatcherInfo, domainRuleCount+1) // matcher index starts from 1
var geoIPMatcherContainer router.GeoIPMatcherContainer
for nidx, ns := range config.NameServer {
idx := clientIndices[nidx]
// Establish domain rule matcher
rules := []string{}
ruleCurr := 0
ruleIter := 0
for _, domain := range ns.PrioritizedDomain {
matcher, err := toStrMatcher(domain.Type, domain.Domain)
if err != nil {
return nil, newError("failed to create prioritized domain").Base(err).AtWarning()
}
midx := domainMatcher.Add(matcher)
domainIndexMap[midx] = uint32(idx)
if midx >= uint32(len(matcherInfos)) { // This rarely happens according to current matcher's implementation
newError("expanding domain matcher info array to size ", midx, " when adding ", matcher).AtDebug().WriteToLog()
matcherInfos = append(matcherInfos, make([]DomainMatcherInfo, midx-uint32(len(matcherInfos))+1)...)
}
info := &matcherInfos[midx]
info.clientIdx = uint16(idx)
if ruleCurr < len(ns.OriginalRules) {
info.domainRuleIdx = uint16(ruleCurr)
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 compability with tests)
info.domainRuleIdx = uint16(len(rules))
rules = append(rules, matcher.String())
}
}
domainRules[idx] = rules
// only add to ipIndexMap if GeoIP is configured
if len(ns.Geoip) > 0 {
@ -178,13 +219,12 @@ func New(ctx context.Context, config *Config) (*Server, error) {
matchers = append(matchers, matcher)
}
matcher := &MultiGeoIPMatcher{matchers: matchers}
ipIndexMap[uint32(idx)] = matcher
server.ipIndexMap[idx] = matcher
}
}
server.domainRules = domainRules
server.domainMatcher = domainMatcher
server.domainIndexMap = domainIndexMap
server.ipIndexMap = ipIndexMap
server.matcherInfos = matcherInfos
}
if len(server.clients) == 0 {
@ -215,9 +255,9 @@ func (s *Server) IsOwnLink(ctx context.Context) bool {
}
// Match check dns ip match geoip
func (s *Server) Match(idx uint32, client Client, domain string, ips []net.IP) ([]net.IP, error) {
matcher, exist := s.ipIndexMap[idx]
if !exist {
func (s *Server) Match(idx int, client Client, domain string, ips []net.IP) ([]net.IP, error) {
matcher := s.ipIndexMap[idx]
if matcher == nil {
return ips, nil
}
@ -239,7 +279,7 @@ func (s *Server) Match(idx uint32, client Client, domain string, ips []net.IP) (
return newIps, nil
}
func (s *Server) queryIPTimeout(idx uint32, client Client, domain string, option IPOption) ([]net.IP, error) {
func (s *Server) queryIPTimeout(idx int, client Client, domain string, option IPOption) ([]net.IP, error) {
ctx, cancel := context.WithTimeout(context.Background(), time.Second*4)
if len(s.tag) > 0 {
ctx = session.ContextWithInbound(ctx, &session.Inbound{
@ -331,9 +371,20 @@ func (s *Server) lookupIPInternal(domain string, option IPOption) ([]net.IP, err
var matchedClient Client
if s.domainMatcher != nil {
indices := s.domainMatcher.Match(domain)
domainRules := []string{}
matchingDNS := []string{}
for _, idx := range indices {
matchedClient = s.clients[s.domainIndexMap[idx]]
ips, err := s.queryIPTimeout(s.domainIndexMap[idx], matchedClient, domain, option)
info := s.matcherInfos[idx]
rule := s.domainRules[info.clientIdx][info.domainRuleIdx]
domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", rule, info.clientIdx))
matchingDNS = append(matchingDNS, s.clients[info.clientIdx].Name())
}
newError("domain ", domain, " matching following rules: ", domainRules).AtDebug().WriteToLog()
newError("domain ", domain, " uses following DNS first: ", matchingDNS).AtDebug().WriteToLog()
for _, idx := range indices {
clientIdx := int(s.matcherInfos[idx].clientIdx)
matchedClient = s.clients[clientIdx]
ips, err := s.queryIPTimeout(clientIdx, matchedClient, domain, option)
if len(ips) > 0 {
return ips, nil
}
@ -353,7 +404,7 @@ func (s *Server) lookupIPInternal(domain string, option IPOption) ([]net.IP, err
continue
}
ips, err := s.queryIPTimeout(uint32(idx), client, domain, option)
ips, err := s.queryIPTimeout(idx, client, domain, option)
if len(ips) > 0 {
return ips, nil
}

16
common/strmatcher/matchers.go
View File

@ -11,12 +11,20 @@ func (m fullMatcher) Match(s string) bool {
return string(m) == s
}
func (m fullMatcher) String() string {
return "full:" + string(m)
}
type substrMatcher string
func (m substrMatcher) Match(s string) bool {
return strings.Contains(s, string(m))
}
func (m substrMatcher) String() string {
return "keyword:" + string(m)
}
type domainMatcher string
func (m domainMatcher) Match(s string) bool {
@ -27,6 +35,10 @@ func (m domainMatcher) Match(s string) bool {
return len(s) == len(pattern) || s[len(s)-len(pattern)-1] == '.'
}
func (m domainMatcher) String() string {
return "domain:" + string(m)
}
type regexMatcher struct {
pattern *regexp.Regexp
}
@ -34,3 +46,7 @@ type regexMatcher struct {
func (m *regexMatcher) Match(s string) bool {
return m.pattern.MatchString(s)
}
func (m *regexMatcher) String() string {
return "regexp:" + m.pattern.String()
}

1
common/strmatcher/strmatcher.go
View File

@ -8,6 +8,7 @@ import (
type Matcher interface {
// Match returns true if the given string matches a predefined pattern.
Match(string) bool
String() string
}
// Type is the type of the matcher.

25
infra/conf/dns.go
View File

@ -62,11 +62,12 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
}
var domains []*dns.NameServer_PriorityDomain
var originalRules []*dns.NameServer_OriginalRule
for _, d := range c.Domains {
parsedDomain, err := parseDomainRule(d)
for _, rule := range c.Domains {
parsedDomain, err := parseDomainRule(rule)
if err != nil {
return nil, newError("invalid domain rule: ", d).Base(err)
return nil, newError("invalid domain rule: ", rule).Base(err)
}
for _, pd := range parsedDomain {
@ -75,6 +76,10 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
Domain: pd.Value,
})
}
originalRules = append(originalRules, &dns.NameServer_OriginalRule{
Rule: rule,
Size: uint32(len(parsedDomain)),
})
}
geoipList, err := toCidrList(c.ExpectIPs)
@ -90,6 +95,7 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
},
PrioritizedDomain: domains,
Geoip: geoipList,
OriginalRules: originalRules,
}, nil
}
@ -185,6 +191,19 @@ func (c *DnsConfig) Build() (*dns.Config, error) {
mapping.Type = dns.DomainMatchingType_Full
mapping.Domain = domain[5:]
mappings = append(mappings, mapping)
} else if strings.HasPrefix(domain, "dotless:") {
mapping := getHostMapping(addr)
mapping.Type = dns.DomainMatchingType_Regex
switch substr := domain[8:]; {
case substr == "":
mapping.Domain = "^[^.]*$"
case !strings.Contains(substr, "."):
mapping.Domain = "^[^.]*" + substr + "[^.]*$"
default:
return nil, newError("substr in dotless rule should not contain a dot: ", substr)
}
mappings = append(mappings, mapping)
} else if strings.HasPrefix(domain, "ext:") {
kv := strings.Split(domain[4:], ":")

6
infra/conf/dns_test.go
View File

@ -94,6 +94,12 @@ func TestDnsConfigParsing(t *testing.T) {
Domain: "v2ray.com",
},
},
OriginalRules: []*dns.NameServer_OriginalRule{
{
Rule: "domain:v2ray.com",
Size: 1,
},
},
},
},
StaticHosts: []*dns.Config_HostMapping{

2
infra/conf/router.go
View File

@ -307,7 +307,7 @@ func parseDomainRule(domain string) ([]*router.Domain, error) {
case !strings.Contains(substr, "."):
domainRule.Value = "^[^.]*" + substr + "[^.]*$"
default:
return nil, newError("Substr in dotless rule should not contain a dot: ", substr)
return nil, newError("substr in dotless rule should not contain a dot: ", substr)
}
default:
domainRule.Type = router.Domain_Plain