sub domain matcher

app/router/condition.go

@@ -114,6 +114,31 @@ func (v *RegexpDomainMatcher) Apply(ctx context.Context) bool {
 	return v.pattern.MatchString(strings.ToLower(domain))
 }
 
+type SubDomainMatcher struct {
+	pattern string
+}
+
+func NewSubDomainMatcher(p string) *SubDomainMatcher {
+	return &SubDomainMatcher{
+		pattern: p,
+	}
+}
+
+func (m *SubDomainMatcher) Apply(ctx context.Context) bool {
+	dest, ok := proxy.TargetFromContext(ctx)
+	if !ok {
+		return false
+	}
+	if !dest.Address.Family().IsDomain() {
+		return false
+	}
+	domain := dest.Address.Domain()
+	if !strings.HasSuffix(domain, m.pattern) {
+		return false
+	}
+	return len(domain) == len(m.pattern) || domain[len(domain)-len(m.pattern)-1] == '.'
+}
+
 type CIDRMatcher struct {
 	cidr     *net.IPNet
 	onSource bool

app/router/condition_test.go

@@ -0,0 +1,46 @@
+package router_test
+
+import (
+	"context"
+	"testing"
+
+	. "v2ray.com/core/app/router"
+	"v2ray.com/core/common/net"
+	"v2ray.com/core/proxy"
+	"v2ray.com/core/testing/assert"
+)
+
+func TestSubDomainMatcher(t *testing.T) {
+	assert := assert.On(t)
+
+	cases := []struct {
+		pattern string
+		input   context.Context
+		output  bool
+	}{
+		{
+			pattern: "v2ray.com",
+			input:   proxy.ContextWithTarget(context.Background(), net.TCPDestination(net.DomainAddress("www.v2ray.com"), 80)),
+			output:  true,
+		},
+		{
+			pattern: "v2ray.com",
+			input:   proxy.ContextWithTarget(context.Background(), net.TCPDestination(net.DomainAddress("v2ray.com"), 80)),
+			output:  true,
+		},
+		{
+			pattern: "v2ray.com",
+			input:   proxy.ContextWithTarget(context.Background(), net.TCPDestination(net.DomainAddress("www.v3ray.com"), 80)),
+			output:  false,
+		},
+		{
+			pattern: "v2ray.com",
+			input:   proxy.ContextWithTarget(context.Background(), net.TCPDestination(net.DomainAddress("2ray.com"), 80)),
+			output:  false,
+		},
+	}
+	for _, test := range cases {
+		matcher := NewSubDomainMatcher(test.pattern)
+		assert.Bool(matcher.Apply(test.input) == test.output).IsTrue()
+	}
+}

app/router/config.go

@@ -22,14 +22,19 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	if len(rr.Domain) > 0 {
 		anyCond := NewAnyCondition()
 		for _, domain := range rr.Domain {
-			if domain.Type == Domain_Plain {
+			switch domain.Type {
+			case Domain_Plain:
 				anyCond.Add(NewPlainDomainMatcher(domain.Value))
-			} else {
+			case Domain_Regex:
 				matcher, err := NewRegexpDomainMatcher(domain.Value)
 				if err != nil {
 					return nil, err
 				}
 				anyCond.Add(matcher)
+			case Domain_Domain:
+				anyCond.Add(NewSubDomainMatcher(domain.Value))
+			default:
+				panic("Unknown domain type.")
 			}
 		}
 		conds.Add(anyCond)

app/router/config.pb.go

@@ -25,15 +25,19 @@ const (
 	Domain_Plain Domain_Type = 0
 	// The value is used as a regular expression.
 	Domain_Regex Domain_Type = 1
+	// The value is a domain.
+	Domain_Domain Domain_Type = 2
 )
 
 var Domain_Type_name = map[int32]string{
 	0: "Plain",
 	1: "Regex",
+	2: "Domain",
 }
 var Domain_Type_value = map[string]int32{
-	"Plain": 0,
-	"Regex": 1,
+	"Plain":  0,
+	"Regex":  1,
+	"Domain": 2,
 }
 
 func (x Domain_Type) String() string {
@@ -230,39 +234,39 @@ func init() {
 func init() { proto.RegisterFile("v2ray.com/core/app/router/config.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 531 bytes of a gzipped FileDescriptorProto
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-	0xa2, 0x39, 0x91, 0x32, 0x77, 0xcc, 0xce, 0x93, 0xbf, 0xe4, 0x95, 0x68, 0x5b, 0xc1, 0x0b, 0x4e,
-	0x75, 0x21, 0x85, 0xd2, 0x4e, 0xbc, 0xf3, 0x6c, 0x3d, 0xc5, 0xa9, 0xfe, 0x2e, 0xd4, 0x37, 0x07,
-	0x66, 0x1a, 0x82, 0x7d, 0xd1, 0x12, 0xc6, 0xd1, 0x2b, 0xf0, 0xf5, 0x4a, 0xd2, 0xc4, 0x4b, 0xbd,
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-	0x3a, 0xf4, 0x03, 0xeb, 0x34, 0x8e, 0xf8, 0x9f, 0x06, 0xbd, 0x81, 0xa8, 0x13, 0xbd, 0xaa, 0x68,
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-	0x64, 0x79, 0xad, 0x37, 0x69, 0x54, 0x7d, 0x43, 0x87, 0xd7, 0x5c, 0x97, 0xc6, 0x2b, 0x99, 0xc0,
-	0x96, 0xcf, 0x5e, 0xc3, 0xe4, 0xfa, 0x64, 0xb4, 0x09, 0xfe, 0x5e, 0xb7, 0xe8, 0x5c, 0x00, 0x4f,
-	0x3a, 0xba, 0x90, 0xb1, 0x87, 0x62, 0xd8, 0x5a, 0xc8, 0xc5, 0xd9, 0xa1, 0xe0, 0x1f, 0x89, 0xae,
-	0xbe, 0xc6, 0xa3, 0xf7, 0x6f, 0xe1, 0x41, 0x25, 0xda, 0x9b, 0xef, 0x39, 0xf2, 0xbe, 0x04, 0xae,
-	0xfa, 0x39, 0xda, 0xfe, 0x3c, 0xc3, 0x64, 0x95, 0xcf, 0x0d, 0xb1, 0x27, 0xa5, 0xb5, 0x40, 0xd5,
-	0x69, 0x60, 0x3f, 0xa7, 0x17, 0xbf, 0x03, 0x00, 0x00, 0xff, 0xff, 0xcb, 0x22, 0xdd, 0x6c, 0xde,
-	0x03, 0x00, 0x00,
+	// 538 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x93, 0xc1, 0x6e, 0xd4, 0x30,
+	0x10, 0x86, 0x49, 0x76, 0x1b, 0xba, 0x93, 0xb2, 0x44, 0x16, 0x45, 0xa1, 0xa8, 0x22, 0x8a, 0x10,
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+	0xe0, 0x12, 0xb9, 0x59, 0x37, 0x58, 0x24, 0xb6, 0xe5, 0x38, 0xa5, 0x7b, 0xe3, 0x05, 0x78, 0x11,
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+	0xff, 0xc0, 0x93, 0xf3, 0x99, 0x22, 0xab, 0xbc, 0x12, 0x6d, 0x51, 0x09, 0x45, 0x0b, 0x22, 0x65,
+	0xa1, 0x44, 0xaf, 0xa9, 0x2a, 0x2a, 0xc1, 0xcf, 0x58, 0x9d, 0x4b, 0x25, 0xb4, 0x40, 0xdb, 0x97,
+	0x9c, 0xa2, 0x39, 0x91, 0x32, 0x77, 0xcc, 0xce, 0xe3, 0xbf, 0xe4, 0x95, 0x68, 0x5b, 0xc1, 0x0b,
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+	0x0b, 0x67, 0xbb, 0xff, 0xbc, 0x0b, 0x1e, 0x60, 0x54, 0xc0, 0xb8, 0x62, 0x4b, 0x15, 0x8f, 0xac,
+	0xe8, 0xe1, 0x1a, 0x91, 0x99, 0x15, 0x5b, 0x10, 0xbd, 0x05, 0x30, 0x3b, 0x2f, 0x15, 0xe1, 0x35,
+	0x8d, 0xc7, 0x89, 0x97, 0x85, 0xb3, 0xe4, 0xaa, 0xcc, 0xad, 0x3d, 0xe7, 0x54, 0xe7, 0x47, 0x42,
+	0x69, 0x6c, 0x38, 0x3c, 0x91, 0x97, 0x21, 0x3a, 0x80, 0xad, 0xe1, 0x39, 0xca, 0x86, 0x75, 0x3a,
+	0xde, 0xb0, 0x25, 0xd2, 0x35, 0x25, 0x0e, 0x1d, 0xfa, 0x9e, 0x75, 0x1a, 0x87, 0xfc, 0x4f, 0x82,
+	0x5e, 0x43, 0xd8, 0x89, 0x5e, 0x55, 0xb4, 0xb4, 0xf3, 0x07, 0xff, 0x9f, 0x1f, 0x1c, 0x3f, 0x37,
+	0xb7, 0xd8, 0x05, 0xe8, 0x3b, 0xaa, 0x4a, 0xda, 0x12, 0xd6, 0xc4, 0xb7, 0x93, 0x51, 0x36, 0xc1,
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+	0x9b, 0xf6, 0x3b, 0x0c, 0x47, 0xc7, 0xa4, 0x4e, 0x7f, 0x79, 0x10, 0xcc, 0xad, 0x73, 0xd1, 0x09,
+	0xdc, 0x75, 0xbb, 0x2c, 0x3b, 0xad, 0x88, 0xa6, 0xf5, 0x6a, 0x70, 0xd3, 0xb3, 0x75, 0xc3, 0x38,
+	0xc7, 0xbb, 0x87, 0xf8, 0x38, 0x68, 0xf0, 0x74, 0x79, 0x2d, 0x37, 0xce, 0x54, 0x7d, 0x43, 0x87,
+	0xd7, 0x5c, 0xe7, 0xcc, 0x2b, 0x9e, 0xc0, 0x96, 0x4f, 0x5f, 0xc1, 0xf4, 0x7a, 0x65, 0xb4, 0x09,
+	0xe3, 0xbd, 0x6e, 0xd1, 0x39, 0x33, 0x9e, 0x74, 0x74, 0x21, 0x23, 0x0f, 0x45, 0xb0, 0xb5, 0x90,
+	0x8b, 0xb3, 0x43, 0xc1, 0x3f, 0x10, 0x5d, 0x7d, 0x89, 0xfc, 0x77, 0x6f, 0xe0, 0x41, 0x25, 0xda,
+	0x9b, 0xfb, 0x1c, 0x79, 0x9f, 0x03, 0x17, 0xfd, 0xf4, 0xb7, 0x3f, 0xcd, 0x30, 0x59, 0xe5, 0x73,
+	0x43, 0xec, 0x49, 0x69, 0x47, 0xa0, 0xea, 0x34, 0xb0, 0xff, 0xd6, 0xf3, 0xdf, 0x01, 0x00, 0x00,
+	0xff, 0xff, 0xa7, 0x6a, 0x97, 0x93, 0xeb, 0x03, 0x00, 0x00,
 }

app/router/config.proto

@@ -17,6 +17,8 @@ message Domain {
     Plain = 0;
     // The value is used as a regular expression.
     Regex = 1;
+    // The value is a domain.
+    Domain = 2;
   }
 
   // Domain matching type.

tools/conf/router.go

@@ -22,13 +22,13 @@ type RouterConfig struct {
 	Settings *RouterRulesConfig `json:"settings"`
 }
 
-func (v *RouterConfig) Build() (*router.Config, error) {
-	if v.Settings == nil {
-		return nil, newError("Config: Router settings is not specified.")
+func (c *RouterConfig) Build() (*router.Config, error) {
+	if c.Settings == nil {
+		return nil, newError("Router settings is not specified.")
 	}
 	config := new(router.Config)
 
-	settings := v.Settings
+	settings := c.Settings
 	config.DomainStrategy = router.Config_AsIs
 	config.Rule = make([]*router.RoutingRule, len(settings.RuleList))
 	domainStrategy := strings.ToLower(settings.DomainStrategy)
@@ -68,12 +68,12 @@ func parseIP(s string) (*router.CIDR, error) {
 		if len(mask) > 0 {
 			bits64, err := strconv.ParseUint(mask, 10, 32)
 			if err != nil {
-				return nil, newError("Config: invalid network mask for router: ", mask).Base(err)
+				return nil, newError("invalid network mask for router: ", mask).Base(err)
 			}
 			bits = uint32(bits64)
 		}
 		if bits > 32 {
-			return nil, newError("Config: invalid network mask for router: ", bits)
+			return nil, newError("invalid network mask for router: ", bits)
 		}
 		return &router.CIDR{
 			Ip:     []byte(ip.IP()),
@@ -84,19 +84,19 @@ func parseIP(s string) (*router.CIDR, error) {
 		if len(mask) > 0 {
 			bits64, err := strconv.ParseUint(mask, 10, 32)
 			if err != nil {
-				return nil, newError("Config: invalid network mask for router: ", mask).Base(err)
+				return nil, newError("invalid network mask for router: ", mask).Base(err)
 			}
 			bits = uint32(bits64)
 		}
 		if bits > 128 {
-			return nil, newError("Config: invalid network mask for router: ", bits)
+			return nil, newError("invalid network mask for router: ", bits)
 		}
 		return &router.CIDR{
 			Ip:     []byte(ip.IP()),
 			Prefix: bits,
 		}, nil
 	default:
-		return nil, newError("Config: unsupported address for router: ", s)
+		return nil, newError("unsupported address for router: ", s)
 	}
 }
 
@@ -123,10 +123,14 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 	if rawFieldRule.Domain != nil {
 		for _, domain := range *rawFieldRule.Domain {
 			domainRule := new(router.Domain)
-			if strings.HasPrefix(domain, "regexp:") {
+			switch {
+			case strings.HasPrefix(domain, "regexp:"):
 				domainRule.Type = router.Domain_Regex
 				domainRule.Value = domain[7:]
-			} else {
+			case strings.HasPrefix(domain, "domain:"):
+				domainRule.Type = router.Domain_Domain
+				domainRule.Value = domain[7:]
+			default:
 				domainRule.Type = router.Domain_Plain
 				domainRule.Value = domain
 			}
@@ -138,7 +142,7 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		for _, ip := range *rawFieldRule.IP {
 			ipRule, err := parseIP(ip)
 			if err != nil {
-				return nil, newError("Config: invalid IP: ", ip).Base(err)
+				return nil, newError("invalid IP: ", ip).Base(err)
 			}
 			rule.Cidr = append(rule.Cidr, ipRule)
 		}
@@ -156,7 +160,7 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		for _, ip := range *rawFieldRule.SourceIP {
 			ipRule, err := parseIP(ip)
 			if err != nil {
-				return nil, newError("Config: invalid IP: ", ip).Base(err)
+				return nil, newError("invalid IP: ", ip).Base(err)
 			}
 			rule.SourceCidr = append(rule.SourceCidr, ipRule)
 		}
@@ -181,41 +185,41 @@ func ParseRule(msg json.RawMessage) (*router.RoutingRule, error) {
 	rawRule := new(RouterRule)
 	err := json.Unmarshal(msg, rawRule)
 	if err != nil {
-		return nil, newError("Config: Invalid router rule.").Base(err)
+		return nil, newError("invalid router rule").Base(err)
 	}
 	if rawRule.Type == "field" {
 		fieldrule, err := parseFieldRule(msg)
 		if err != nil {
-			return nil, newError("Config: Invalid field rule.").Base(err)
+			return nil, newError("invalid field rule").Base(err)
 		}
 		return fieldrule, nil
 	}
 	if rawRule.Type == "chinaip" {
 		chinaiprule, err := parseChinaIPRule(msg)
 		if err != nil {
-			return nil, newError("Config: Invalid chinaip rule.").Base(err)
+			return nil, newError("invalid chinaip rule").Base(err)
 		}
 		return chinaiprule, nil
 	}
 	if rawRule.Type == "chinasites" {
 		chinasitesrule, err := parseChinaSitesRule(msg)
 		if err != nil {
-			return nil, newError("Config: Invalid chinasites rule.").Base(err)
+			return nil, newError("invalid chinasites rule").Base(err)
 		}
 		return chinasitesrule, nil
 	}
-	return nil, newError("Config: Unknown router rule type: ", rawRule.Type)
+	return nil, newError("unknown router rule type: ", rawRule.Type)
 }
 
 func parseChinaIPRule(data []byte) (*router.RoutingRule, error) {
 	rawRule := new(RouterRule)
 	err := json.Unmarshal(data, rawRule)
 	if err != nil {
-		return nil, newError("Config: Invalid router rule.").Base(err)
+		return nil, newError("invalid router rule").Base(err)
 	}
 	var chinaIPs geoip.CountryIPRange
 	if err := proto.Unmarshal(geoip.ChinaIPs, &chinaIPs); err != nil {
-		return nil, newError("Config: Invalid china ips.").Base(err)
+		return nil, newError("invalid china ips").Base(err)
 	}
 	return &router.RoutingRule{
 		Tag:  rawRule.OutboundTag,
@@ -227,7 +231,7 @@ func parseChinaSitesRule(data []byte) (*router.RoutingRule, error) {
 	rawRule := new(RouterRule)
 	err := json.Unmarshal(data, rawRule)
 	if err != nil {
-		log.Trace(newError("Router: Invalid router rule: ", err).AtError())
+		log.Trace(newError("invalid router rule: ", err).AtError())
 		return nil, err
 	}
 	return &router.RoutingRule{