feat: ACL IDN (punycode domains) support

extras/go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/stretchr/testify v1.8.4
 	github.com/txthinking/socks5 v0.0.0-20230325130024-4230056ae301
 	golang.org/x/crypto v0.14.0
+	golang.org/x/net v0.17.0
 	google.golang.org/protobuf v1.28.1
 )
 
@@ -28,7 +29,6 @@ require (
 	go.uber.org/mock v0.3.0 // indirect
 	golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
 	golang.org/x/mod v0.12.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/sys v0.13.0 // indirect
 	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/tools v0.11.1 // indirect

extras/outbounds/acl/matchers.go

@@ -2,6 +2,8 @@ package acl
 
 import (
 	"net"
+
+	"golang.org/x/net/idna"
 )
 
 type hostMatcher interface {
@@ -30,10 +32,14 @@ type domainMatcher struct {
 }
 
 func (m *domainMatcher) Match(host HostInfo) bool {
-	if m.Wildcard {
-		return deepMatchRune([]rune(host.Name), []rune(m.Pattern))
+	name, err := idna.ToUnicode(host.Name)
+	if err != nil {
+		name = host.Name
 	}
-	return m.Pattern == host.Name
+	if m.Wildcard {
+		return deepMatchRune([]rune(name), []rune(m.Pattern))
+	}
+	return name == m.Pattern
 }
 
 func deepMatchRune(str, pattern []rune) bool {

extras/outbounds/acl/matchers_test.go

@@ -162,6 +162,17 @@ func Test_domainMatcher_Match(t *testing.T) {
 			},
 			want: true,
 		},
+		{
+			name: "non-wildcard IDN match",
+			fields: fields{
+				Pattern:  "政府.中国",
+				Wildcard: false,
+			},
+			host: HostInfo{
+				Name: "xn--mxtq1m.xn--fiqs8s",
+			},
+			want: true,
+		},
 		{
 			name: "non-wildcard no match",
 			fields: fields{
@@ -173,6 +184,17 @@ func Test_domainMatcher_Match(t *testing.T) {
 			},
 			want: false,
 		},
+		{
+			name: "non-wildcard IDN no match",
+			fields: fields{
+				Pattern:  "政府.中国",
+				Wildcard: false,
+			},
+			host: HostInfo{
+				Name: "xn--mxtq1m.xn--yfro4i67o",
+			},
+			want: false,
+		},
 		{
 			name: "wildcard match 1",
 			fields: fields{
@@ -195,6 +217,28 @@ func Test_domainMatcher_Match(t *testing.T) {
 			},
 			want: true,
 		},
+		{
+			name: "wildcard IDN match 1",
+			fields: fields{
+				Pattern:  "战狼*.com",
+				Wildcard: true,
+			},
+			host: HostInfo{
+				Name: "xn--2-x14by21c.com",
+			},
+			want: true,
+		},
+		{
+			name: "wildcard IDN match 2",
+			fields: fields{
+				Pattern:  "*大学*",
+				Wildcard: true,
+			},
+			host: HostInfo{
+				Name: "xn--xkry9kk1bz66a.xn--ses554g",
+			},
+			want: true,
+		},
 		{
 			name: "wildcard no match",
 			fields: fields{
@@ -206,6 +250,17 @@ func Test_domainMatcher_Match(t *testing.T) {
 			},
 			want: false,
 		},
+		{
+			name: "wildcard IDN no match",
+			fields: fields{
+				Pattern:  "*呵呵*",
+				Wildcard: true,
+			},
+			host: HostInfo{
+				Name: "xn--6qqt7juua.cn",
+			},
+			want: false,
+		},
 		{
 			name: "empty",
 			fields: fields{