mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-24 14:16:06 +03:00
Refactor: A faster DomainMatcher implementation (#348)
Co-authored-by: DarthVader <61409963+darsvador@users.noreply.github.com>
This commit is contained in:
秋のかえで
GitHub
parent
bf94fb53ca
commit
7b7084f825
@ -179,7 +179,7 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
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func shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
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domain := result.Domain()
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for _, d := range request.ExcludeForDomain {
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if domain == d {
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if strings.ToLower(domain) == d {
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return false
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}
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}
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@ -348,7 +348,6 @@ func (s *Server) LookupIP(domain string, option dns.IPOption) ([]net.IP, error)
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if domain == "" {
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return nil, newError("empty domain name")
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}
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domain = strings.ToLower(domain)
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// normalize the FQDN form query
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if strings.HasSuffix(domain, ".") {
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@ -101,8 +101,8 @@ func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
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rr, _ := dns.NewRR("localhost-b. IN A 127.0.0.4")
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ans.Answer = append(ans.Answer, rr)
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case q.Name == "mijia\\ cloud." && q.Qtype == dns.TypeA:
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rr, _ := dns.NewRR("mijia\\ cloud. IN A 127.0.0.1")
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case q.Name == "Mijia\\ Cloud." && q.Qtype == dns.TypeA:
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rr, _ := dns.NewRR("Mijia\\ Cloud. IN A 127.0.0.1")
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ans.Answer = append(ans.Answer, rr)
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}
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}
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@ -66,6 +66,24 @@ type DomainMatcher struct {
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matchers strmatcher.IndexMatcher
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}
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func NewMphMatcherGroup(domains []*Domain) (*DomainMatcher, error) {
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g := strmatcher.NewMphMatcherGroup()
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for _, d := range domains {
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matcherType, f := matcherTypeMap[d.Type]
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if !f {
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return nil, newError("unsupported domain type", d.Type)
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}
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_, err := g.AddPattern(d.Value, matcherType)
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if err != nil {
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return nil, err
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}
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}
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g.Build()
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return &DomainMatcher{
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matchers: g,
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}, nil
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}
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func NewDomainMatcher(domains []*Domain) (*DomainMatcher, error) {
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g := new(strmatcher.MatcherGroup)
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for _, d := range domains {
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@ -82,7 +100,7 @@ func NewDomainMatcher(domains []*Domain) (*DomainMatcher, error) {
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}
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func (m *DomainMatcher) ApplyDomain(domain string) bool {
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return len(m.matchers.Match(domain)) > 0
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return len(m.matchers.Match(strings.ToLower(domain))) > 0
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}
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// Apply implements Condition.
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@ -91,7 +109,7 @@ func (m *DomainMatcher) Apply(ctx routing.Context) bool {
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if len(domain) == 0 {
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return false
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}
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return m.ApplyDomain(strings.ToLower(domain))
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return m.ApplyDomain(domain)
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}
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type MultiGeoIPMatcher struct {
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@ -359,6 +359,9 @@ func TestChinaSites(t *testing.T) {
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matcher, err := NewDomainMatcher(domains)
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common.Must(err)
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acMatcher, err := NewMphMatcherGroup(domains)
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common.Must(err)
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type TestCase struct {
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Domain string
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Output bool
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@ -387,9 +390,96 @@ func TestChinaSites(t *testing.T) {
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}
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for _, testCase := range testCases {
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r := matcher.ApplyDomain(testCase.Domain)
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if r != testCase.Output {
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t.Error("expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r)
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r1 := matcher.ApplyDomain(testCase.Domain)
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r2 := acMatcher.ApplyDomain(testCase.Domain)
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if r1 != testCase.Output {
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t.Error("DomainMatcher expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r1)
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} else if r2 != testCase.Output {
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t.Error("ACDomainMatcher expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r2)
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}
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}
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}
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func BenchmarkMphDomainMatcher(b *testing.B) {
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domains, err := loadGeoSite("CN")
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common.Must(err)
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matcher, err := NewMphMatcherGroup(domains)
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common.Must(err)
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type TestCase struct {
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Domain string
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Output bool
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}
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testCases := []TestCase{
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{
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Domain: "163.com",
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Output: true,
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},
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{
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Domain: "163.com",
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Output: true,
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},
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{
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Domain: "164.com",
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Output: false,
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},
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{
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Domain: "164.com",
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Output: false,
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},
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}
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for i := 0; i < 1024; i++ {
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testCases = append(testCases, TestCase{Domain: strconv.Itoa(i) + ".not-exists.com", Output: false})
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for _, testCase := range testCases {
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_ = matcher.ApplyDomain(testCase.Domain)
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}
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}
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}
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func BenchmarkDomainMatcher(b *testing.B) {
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domains, err := loadGeoSite("CN")
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common.Must(err)
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matcher, err := NewDomainMatcher(domains)
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common.Must(err)
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type TestCase struct {
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Domain string
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Output bool
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}
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testCases := []TestCase{
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{
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Domain: "163.com",
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Output: true,
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},
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{
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Domain: "163.com",
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Output: true,
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},
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{
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Domain: "164.com",
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Output: false,
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},
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{
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Domain: "164.com",
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Output: false,
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},
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}
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for i := 0; i < 1024; i++ {
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testCases = append(testCases, TestCase{Domain: strconv.Itoa(i) + ".not-exists.com", Output: false})
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for _, testCase := range testCases {
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_ = matcher.ApplyDomain(testCase.Domain)
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}
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}
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}
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@ -67,11 +67,24 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
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conds := NewConditionChan()
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if len(rr.Domain) > 0 {
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switch rr.DomainMatcher {
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case "linear":
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matcher, err := NewDomainMatcher(rr.Domain)
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if err != nil {
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return nil, newError("failed to build domain condition").Base(err)
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}
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conds.Add(matcher)
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case "mph", "hybrid":
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fallthrough
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default:
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matcher, err := NewMphMatcherGroup(rr.Domain)
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if err != nil {
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return nil, newError("failed to build domain condition with MphDomainMatcher").Base(err)
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}
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newError("MphDomainMatcher is enabled for ", len(rr.Domain), " domain rule(s)").AtDebug().WriteToLog()
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conds.Add(matcher)
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}
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}
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if len(rr.UserEmail) > 0 {
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@ -1,13 +1,12 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// versions:
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// protoc-gen-go v1.25.0
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// protoc v3.14.0
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// protoc-gen-go v1.26.0
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// protoc v3.15.8
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// source: app/router/config.proto
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package router
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import (
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proto "github.com/golang/protobuf/proto"
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net "github.com/xtls/xray-core/common/net"
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protoreflect "google.golang.org/protobuf/reflect/protoreflect"
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protoimpl "google.golang.org/protobuf/runtime/protoimpl"
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@ -22,10 +21,6 @@ const (
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_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
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)
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// This is a compile-time assertion that a sufficiently up-to-date version
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// of the legacy proto package is being used.
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const _ = proto.ProtoPackageIsVersion4
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// Type of domain value.
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type Domain_Type int32
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@ -515,6 +510,7 @@ type RoutingRule struct {
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InboundTag []string `protobuf:"bytes,8,rep,name=inbound_tag,json=inboundTag,proto3" json:"inbound_tag,omitempty"`
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Protocol []string `protobuf:"bytes,9,rep,name=protocol,proto3" json:"protocol,omitempty"`
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Attributes string `protobuf:"bytes,15,opt,name=attributes,proto3" json:"attributes,omitempty"`
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DomainMatcher string `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
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}
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func (x *RoutingRule) Reset() {
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@ -672,6 +668,13 @@ func (x *RoutingRule) GetAttributes() string {
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return ""
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}
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func (x *RoutingRule) GetDomainMatcher() string {
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if x != nil {
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return x.DomainMatcher
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}
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return ""
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}
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type isRoutingRule_TargetTag interface {
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isRoutingRule_TargetTag()
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}
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@ -946,7 +949,7 @@ var file_app_router_config_proto_rawDesc = []byte{
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@ -994,36 +997,38 @@ var file_app_router_config_proto_rawDesc = []byte{
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|
||||
0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x73, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f,
|
||||
0x72, 0x18, 0x02, 0x20, 0x03, 0x28, 0x09, 0x52, 0x10, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e,
|
||||
0x64, 0x53, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x22, 0x9b, 0x02, 0x0a, 0x06, 0x43, 0x6f,
|
||||
0x6e, 0x66, 0x69, 0x67, 0x12, 0x4f, 0x0a, 0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x73,
|
||||
0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x26, 0x2e,
|
||||
0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e,
|
||||
0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
|
||||
0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x0e, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
|
||||
0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x30, 0x0a, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x02, 0x20,
|
||||
0x03, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72,
|
||||
0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c,
|
||||
0x65, 0x52, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x12, 0x45, 0x0a, 0x0e, 0x62, 0x61, 0x6c, 0x61, 0x6e,
|
||||
0x63, 0x69, 0x6e, 0x67, 0x5f, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32,
|
||||
0x1e, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65,
|
||||
0x72, 0x2e, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52,
|
||||
0x0d, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x22, 0x47,
|
||||
0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
|
||||
0x12, 0x08, 0x0a, 0x04, 0x41, 0x73, 0x49, 0x73, 0x10, 0x00, 0x12, 0x09, 0x0a, 0x05, 0x55, 0x73,
|
||||
0x65, 0x49, 0x70, 0x10, 0x01, 0x12, 0x10, 0x0a, 0x0c, 0x49, 0x70, 0x49, 0x66, 0x4e, 0x6f, 0x6e,
|
||||
0x4d, 0x61, 0x74, 0x63, 0x68, 0x10, 0x02, 0x12, 0x0e, 0x0a, 0x0a, 0x49, 0x70, 0x4f, 0x6e, 0x44,
|
||||
0x65, 0x6d, 0x61, 0x6e, 0x64, 0x10, 0x03, 0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
|
||||
0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x50, 0x01,
|
||||
0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
|
||||
0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f,
|
||||
0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0xaa, 0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70,
|
||||
0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
|
||||
@ -119,6 +119,8 @@ message RoutingRule {
|
||||
repeated string protocol = 9;
|
||||
|
||||
string attributes = 15;
|
||||
|
||||
string domain_matcher = 17;
|
||||
}
|
||||
|
||||
message BalancingRule {
|
||||
|
||||
@ -102,7 +102,7 @@ func ReadClientHello(data []byte, h *SniffHeader) error {
|
||||
return errNotClientHello
|
||||
}
|
||||
if nameType == 0 {
|
||||
serverName := strings.ToLower(string(d[:nameLen]))
|
||||
serverName := string(d[:nameLen])
|
||||
// An SNI value may not include a
|
||||
// trailing dot. See
|
||||
// https://tools.ietf.org/html/rfc6066#section-3.
|
||||
|
||||
243
common/strmatcher/ac_automaton_matcher.go
Normal file
243
common/strmatcher/ac_automaton_matcher.go
Normal file
@ -0,0 +1,243 @@
|
||||
package strmatcher
|
||||
|
||||
import (
|
||||
"container/list"
|
||||
)
|
||||
|
||||
const validCharCount = 53
|
||||
|
||||
type MatchType struct {
|
||||
matchType Type
|
||||
exist bool
|
||||
}
|
||||
|
||||
const (
|
||||
TrieEdge bool = true
|
||||
FailEdge bool = false
|
||||
)
|
||||
|
||||
type Edge struct {
|
||||
edgeType bool
|
||||
nextNode int
|
||||
}
|
||||
|
||||
type ACAutomaton struct {
|
||||
trie [][validCharCount]Edge
|
||||
fail []int
|
||||
exists []MatchType
|
||||
count int
|
||||
}
|
||||
|
||||
func newNode() [validCharCount]Edge {
|
||||
var s [validCharCount]Edge
|
||||
for i := range s {
|
||||
s[i] = Edge{
|
||||
edgeType: FailEdge,
|
||||
nextNode: 0,
|
||||
}
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
var char2Index = []int{
|
||||
'A': 0,
|
||||
'a': 0,
|
||||
'B': 1,
|
||||
'b': 1,
|
||||
'C': 2,
|
||||
'c': 2,
|
||||
'D': 3,
|
||||
'd': 3,
|
||||
'E': 4,
|
||||
'e': 4,
|
||||
'F': 5,
|
||||
'f': 5,
|
||||
'G': 6,
|
||||
'g': 6,
|
||||
'H': 7,
|
||||
'h': 7,
|
||||
'I': 8,
|
||||
'i': 8,
|
||||
'J': 9,
|
||||
'j': 9,
|
||||
'K': 10,
|
||||
'k': 10,
|
||||
'L': 11,
|
||||
'l': 11,
|
||||
'M': 12,
|
||||
'm': 12,
|
||||
'N': 13,
|
||||
'n': 13,
|
||||
'O': 14,
|
||||
'o': 14,
|
||||
'P': 15,
|
||||
'p': 15,
|
||||
'Q': 16,
|
||||
'q': 16,
|
||||
'R': 17,
|
||||
'r': 17,
|
||||
'S': 18,
|
||||
's': 18,
|
||||
'T': 19,
|
||||
't': 19,
|
||||
'U': 20,
|
||||
'u': 20,
|
||||
'V': 21,
|
||||
'v': 21,
|
||||
'W': 22,
|
||||
'w': 22,
|
||||
'X': 23,
|
||||
'x': 23,
|
||||
'Y': 24,
|
||||
'y': 24,
|
||||
'Z': 25,
|
||||
'z': 25,
|
||||
'!': 26,
|
||||
'$': 27,
|
||||
'&': 28,
|
||||
'\'': 29,
|
||||
'(': 30,
|
||||
')': 31,
|
||||
'*': 32,
|
||||
'+': 33,
|
||||
',': 34,
|
||||
';': 35,
|
||||
'=': 36,
|
||||
':': 37,
|
||||
'%': 38,
|
||||
'-': 39,
|
||||
'.': 40,
|
||||
'_': 41,
|
||||
'~': 42,
|
||||
'0': 43,
|
||||
'1': 44,
|
||||
'2': 45,
|
||||
'3': 46,
|
||||
'4': 47,
|
||||
'5': 48,
|
||||
'6': 49,
|
||||
'7': 50,
|
||||
'8': 51,
|
||||
'9': 52,
|
||||
}
|
||||
|
||||
func NewACAutomaton() *ACAutomaton {
|
||||
var ac = new(ACAutomaton)
|
||||
ac.trie = append(ac.trie, newNode())
|
||||
ac.fail = append(ac.fail, 0)
|
||||
ac.exists = append(ac.exists, MatchType{
|
||||
matchType: Full,
|
||||
exist: false,
|
||||
})
|
||||
return ac
|
||||
}
|
||||
|
||||
func (ac *ACAutomaton) Add(domain string, t Type) {
|
||||
var node = 0
|
||||
for i := len(domain) - 1; i >= 0; i-- {
|
||||
var idx = char2Index[domain[i]]
|
||||
if ac.trie[node][idx].nextNode == 0 {
|
||||
ac.count++
|
||||
if len(ac.trie) < ac.count+1 {
|
||||
ac.trie = append(ac.trie, newNode())
|
||||
ac.fail = append(ac.fail, 0)
|
||||
ac.exists = append(ac.exists, MatchType{
|
||||
matchType: Full,
|
||||
exist: false,
|
||||
})
|
||||
}
|
||||
ac.trie[node][idx] = Edge{
|
||||
edgeType: TrieEdge,
|
||||
nextNode: ac.count,
|
||||
}
|
||||
}
|
||||
node = ac.trie[node][idx].nextNode
|
||||
}
|
||||
ac.exists[node] = MatchType{
|
||||
matchType: t,
|
||||
exist: true,
|
||||
}
|
||||
switch t {
|
||||
case Domain:
|
||||
ac.exists[node] = MatchType{
|
||||
matchType: Full,
|
||||
exist: true,
|
||||
}
|
||||
var idx = char2Index['.']
|
||||
if ac.trie[node][idx].nextNode == 0 {
|
||||
ac.count++
|
||||
if len(ac.trie) < ac.count+1 {
|
||||
ac.trie = append(ac.trie, newNode())
|
||||
ac.fail = append(ac.fail, 0)
|
||||
ac.exists = append(ac.exists, MatchType{
|
||||
matchType: Full,
|
||||
exist: false,
|
||||
})
|
||||
}
|
||||
ac.trie[node][idx] = Edge{
|
||||
edgeType: TrieEdge,
|
||||
nextNode: ac.count,
|
||||
}
|
||||
}
|
||||
node = ac.trie[node][idx].nextNode
|
||||
ac.exists[node] = MatchType{
|
||||
matchType: t,
|
||||
exist: true,
|
||||
}
|
||||
default:
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
func (ac *ACAutomaton) Build() {
|
||||
var queue = list.New()
|
||||
for i := 0; i < validCharCount; i++ {
|
||||
if ac.trie[0][i].nextNode != 0 {
|
||||
queue.PushBack(ac.trie[0][i])
|
||||
}
|
||||
}
|
||||
for {
|
||||
var front = queue.Front()
|
||||
if front == nil {
|
||||
break
|
||||
} else {
|
||||
var node = front.Value.(Edge).nextNode
|
||||
queue.Remove(front)
|
||||
for i := 0; i < validCharCount; i++ {
|
||||
if ac.trie[node][i].nextNode != 0 {
|
||||
ac.fail[ac.trie[node][i].nextNode] = ac.trie[ac.fail[node]][i].nextNode
|
||||
queue.PushBack(ac.trie[node][i])
|
||||
} else {
|
||||
ac.trie[node][i] = Edge{
|
||||
edgeType: FailEdge,
|
||||
nextNode: ac.trie[ac.fail[node]][i].nextNode,
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (ac *ACAutomaton) Match(s string) bool {
|
||||
var node = 0
|
||||
var fullMatch = true
|
||||
// 1. the match string is all through trie edge. FULL MATCH or DOMAIN
|
||||
// 2. the match string is through a fail edge. NOT FULL MATCH
|
||||
// 2.1 Through a fail edge, but there exists a valid node. SUBSTR
|
||||
for i := len(s) - 1; i >= 0; i-- {
|
||||
var idx = char2Index[s[i]]
|
||||
fullMatch = fullMatch && ac.trie[node][idx].edgeType
|
||||
node = ac.trie[node][idx].nextNode
|
||||
switch ac.exists[node].matchType {
|
||||
case Substr:
|
||||
return true
|
||||
case Domain:
|
||||
if fullMatch {
|
||||
return true
|
||||
}
|
||||
default:
|
||||
break
|
||||
}
|
||||
}
|
||||
return fullMatch && ac.exists[node].exist
|
||||
}
|
||||
@ -8,6 +8,19 @@ import (
|
||||
. "github.com/xtls/xray-core/common/strmatcher"
|
||||
)
|
||||
|
||||
func BenchmarkACAutomaton(b *testing.B) {
|
||||
ac := NewACAutomaton()
|
||||
for i := 1; i <= 1024; i++ {
|
||||
ac.Add(strconv.Itoa(i)+".v2ray.com", Domain)
|
||||
}
|
||||
ac.Build()
|
||||
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
_ = ac.Match("0.v2ray.com")
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkDomainMatcherGroup(b *testing.B) {
|
||||
g := new(DomainMatcherGroup)
|
||||
|
||||
|
||||
301
common/strmatcher/mph_matcher.go
Normal file
301
common/strmatcher/mph_matcher.go
Normal file
@ -0,0 +1,301 @@
|
||||
package strmatcher
|
||||
|
||||
import (
|
||||
"math/bits"
|
||||
"regexp"
|
||||
"sort"
|
||||
"strings"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// PrimeRK is the prime base used in Rabin-Karp algorithm.
|
||||
const PrimeRK = 16777619
|
||||
|
||||
// calculate the rolling murmurHash of given string
|
||||
func RollingHash(s string) uint32 {
|
||||
h := uint32(0)
|
||||
for i := len(s) - 1; i >= 0; i-- {
|
||||
h = h*PrimeRK + uint32(s[i])
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// A MphMatcherGroup is divided into three parts:
|
||||
// 1. `full` and `domain` patterns are matched by Rabin-Karp algorithm and minimal perfect hash table;
|
||||
// 2. `substr` patterns are matched by ac automaton;
|
||||
// 3. `regex` patterns are matched with the regex library.
|
||||
type MphMatcherGroup struct {
|
||||
ac *ACAutomaton
|
||||
otherMatchers []matcherEntry
|
||||
rules []string
|
||||
level0 []uint32
|
||||
level0Mask int
|
||||
level1 []uint32
|
||||
level1Mask int
|
||||
count uint32
|
||||
ruleMap *map[string]uint32
|
||||
}
|
||||
|
||||
func (g *MphMatcherGroup) AddFullOrDomainPattern(pattern string, t Type) {
|
||||
h := RollingHash(pattern)
|
||||
switch t {
|
||||
case Domain:
|
||||
(*g.ruleMap)["."+pattern] = h*PrimeRK + uint32('.')
|
||||
fallthrough
|
||||
case Full:
|
||||
(*g.ruleMap)[pattern] = h
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
func NewMphMatcherGroup() *MphMatcherGroup {
|
||||
return &MphMatcherGroup{
|
||||
ac: nil,
|
||||
otherMatchers: nil,
|
||||
rules: nil,
|
||||
level0: nil,
|
||||
level0Mask: 0,
|
||||
level1: nil,
|
||||
level1Mask: 0,
|
||||
count: 1,
|
||||
ruleMap: &map[string]uint32{},
|
||||
}
|
||||
}
|
||||
|
||||
// AddPattern adds a pattern to MphMatcherGroup
|
||||
func (g *MphMatcherGroup) AddPattern(pattern string, t Type) (uint32, error) {
|
||||
switch t {
|
||||
case Substr:
|
||||
if g.ac == nil {
|
||||
g.ac = NewACAutomaton()
|
||||
}
|
||||
g.ac.Add(pattern, t)
|
||||
case Full, Domain:
|
||||
pattern = strings.ToLower(pattern)
|
||||
g.AddFullOrDomainPattern(pattern, t)
|
||||
case Regex:
|
||||
r, err := regexp.Compile(pattern)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
g.otherMatchers = append(g.otherMatchers, matcherEntry{
|
||||
m: ®exMatcher{pattern: r},
|
||||
id: g.count,
|
||||
})
|
||||
default:
|
||||
panic("Unknown type")
|
||||
}
|
||||
return g.count, nil
|
||||
}
|
||||
|
||||
// Build builds a minimal perfect hash table and ac automaton from insert rules
|
||||
func (g *MphMatcherGroup) Build() {
|
||||
if g.ac != nil {
|
||||
g.ac.Build()
|
||||
}
|
||||
keyLen := len(*g.ruleMap)
|
||||
if keyLen == 0 {
|
||||
keyLen = 1
|
||||
(*g.ruleMap)["empty___"] = RollingHash("empty___")
|
||||
}
|
||||
g.level0 = make([]uint32, nextPow2(keyLen/4))
|
||||
g.level0Mask = len(g.level0) - 1
|
||||
g.level1 = make([]uint32, nextPow2(keyLen))
|
||||
g.level1Mask = len(g.level1) - 1
|
||||
var sparseBuckets = make([][]int, len(g.level0))
|
||||
var ruleIdx int
|
||||
for rule, hash := range *g.ruleMap {
|
||||
n := int(hash) & g.level0Mask
|
||||
g.rules = append(g.rules, rule)
|
||||
sparseBuckets[n] = append(sparseBuckets[n], ruleIdx)
|
||||
ruleIdx++
|
||||
}
|
||||
g.ruleMap = nil
|
||||
var buckets []indexBucket
|
||||
for n, vals := range sparseBuckets {
|
||||
if len(vals) > 0 {
|
||||
buckets = append(buckets, indexBucket{n, vals})
|
||||
}
|
||||
}
|
||||
sort.Sort(bySize(buckets))
|
||||
|
||||
occ := make([]bool, len(g.level1))
|
||||
var tmpOcc []int
|
||||
for _, bucket := range buckets {
|
||||
var seed = uint32(0)
|
||||
for {
|
||||
findSeed := true
|
||||
tmpOcc = tmpOcc[:0]
|
||||
for _, i := range bucket.vals {
|
||||
n := int(strhashFallback(unsafe.Pointer(&g.rules[i]), uintptr(seed))) & g.level1Mask
|
||||
if occ[n] {
|
||||
for _, n := range tmpOcc {
|
||||
occ[n] = false
|
||||
}
|
||||
seed++
|
||||
findSeed = false
|
||||
break
|
||||
}
|
||||
occ[n] = true
|
||||
tmpOcc = append(tmpOcc, n)
|
||||
g.level1[n] = uint32(i)
|
||||
}
|
||||
if findSeed {
|
||||
g.level0[bucket.n] = seed
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func nextPow2(v int) int {
|
||||
if v <= 1 {
|
||||
return 1
|
||||
}
|
||||
const MaxUInt = ^uint(0)
|
||||
n := (MaxUInt >> bits.LeadingZeros(uint(v))) + 1
|
||||
return int(n)
|
||||
}
|
||||
|
||||
// Lookup searches for s in t and returns its index and whether it was found.
|
||||
func (g *MphMatcherGroup) Lookup(h uint32, s string) bool {
|
||||
i0 := int(h) & g.level0Mask
|
||||
seed := g.level0[i0]
|
||||
i1 := int(strhashFallback(unsafe.Pointer(&s), uintptr(seed))) & g.level1Mask
|
||||
n := g.level1[i1]
|
||||
return s == g.rules[int(n)]
|
||||
}
|
||||
|
||||
// Match implements IndexMatcher.Match.
|
||||
func (g *MphMatcherGroup) Match(pattern string) []uint32 {
|
||||
result := []uint32{}
|
||||
hash := uint32(0)
|
||||
for i := len(pattern) - 1; i >= 0; i-- {
|
||||
hash = hash*PrimeRK + uint32(pattern[i])
|
||||
if pattern[i] == '.' {
|
||||
if g.Lookup(hash, pattern[i:]) {
|
||||
result = append(result, 1)
|
||||
return result
|
||||
}
|
||||
}
|
||||
}
|
||||
if g.Lookup(hash, pattern) {
|
||||
result = append(result, 1)
|
||||
return result
|
||||
}
|
||||
if g.ac != nil && g.ac.Match(pattern) {
|
||||
result = append(result, 1)
|
||||
return result
|
||||
}
|
||||
for _, e := range g.otherMatchers {
|
||||
if e.m.Match(pattern) {
|
||||
result = append(result, e.id)
|
||||
return result
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type indexBucket struct {
|
||||
n int
|
||||
vals []int
|
||||
}
|
||||
|
||||
type bySize []indexBucket
|
||||
|
||||
func (s bySize) Len() int { return len(s) }
|
||||
func (s bySize) Less(i, j int) bool { return len(s[i].vals) > len(s[j].vals) }
|
||||
func (s bySize) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
|
||||
type stringStruct struct {
|
||||
str unsafe.Pointer
|
||||
len int
|
||||
}
|
||||
|
||||
func strhashFallback(a unsafe.Pointer, h uintptr) uintptr {
|
||||
x := (*stringStruct)(a)
|
||||
return memhashFallback(x.str, h, uintptr(x.len))
|
||||
}
|
||||
|
||||
const (
|
||||
// Constants for multiplication: four random odd 64-bit numbers.
|
||||
m1 = 16877499708836156737
|
||||
m2 = 2820277070424839065
|
||||
m3 = 9497967016996688599
|
||||
m4 = 15839092249703872147
|
||||
)
|
||||
|
||||
var hashkey = [4]uintptr{1, 1, 1, 1}
|
||||
|
||||
func memhashFallback(p unsafe.Pointer, seed, s uintptr) uintptr {
|
||||
h := uint64(seed + s*hashkey[0])
|
||||
tail:
|
||||
switch {
|
||||
case s == 0:
|
||||
case s < 4:
|
||||
h ^= uint64(*(*byte)(p))
|
||||
h ^= uint64(*(*byte)(add(p, s>>1))) << 8
|
||||
h ^= uint64(*(*byte)(add(p, s-1))) << 16
|
||||
h = rotl31(h*m1) * m2
|
||||
case s <= 8:
|
||||
h ^= uint64(readUnaligned32(p))
|
||||
h ^= uint64(readUnaligned32(add(p, s-4))) << 32
|
||||
h = rotl31(h*m1) * m2
|
||||
case s <= 16:
|
||||
h ^= readUnaligned64(p)
|
||||
h = rotl31(h*m1) * m2
|
||||
h ^= readUnaligned64(add(p, s-8))
|
||||
h = rotl31(h*m1) * m2
|
||||
case s <= 32:
|
||||
h ^= readUnaligned64(p)
|
||||
h = rotl31(h*m1) * m2
|
||||
h ^= readUnaligned64(add(p, 8))
|
||||
h = rotl31(h*m1) * m2
|
||||
h ^= readUnaligned64(add(p, s-16))
|
||||
h = rotl31(h*m1) * m2
|
||||
h ^= readUnaligned64(add(p, s-8))
|
||||
h = rotl31(h*m1) * m2
|
||||
default:
|
||||
v1 := h
|
||||
v2 := uint64(seed * hashkey[1])
|
||||
v3 := uint64(seed * hashkey[2])
|
||||
v4 := uint64(seed * hashkey[3])
|
||||
for s >= 32 {
|
||||
v1 ^= readUnaligned64(p)
|
||||
v1 = rotl31(v1*m1) * m2
|
||||
p = add(p, 8)
|
||||
v2 ^= readUnaligned64(p)
|
||||
v2 = rotl31(v2*m2) * m3
|
||||
p = add(p, 8)
|
||||
v3 ^= readUnaligned64(p)
|
||||
v3 = rotl31(v3*m3) * m4
|
||||
p = add(p, 8)
|
||||
v4 ^= readUnaligned64(p)
|
||||
v4 = rotl31(v4*m4) * m1
|
||||
p = add(p, 8)
|
||||
s -= 32
|
||||
}
|
||||
h = v1 ^ v2 ^ v3 ^ v4
|
||||
goto tail
|
||||
}
|
||||
|
||||
h ^= h >> 29
|
||||
h *= m3
|
||||
h ^= h >> 32
|
||||
return uintptr(h)
|
||||
}
|
||||
func add(p unsafe.Pointer, x uintptr) unsafe.Pointer {
|
||||
return unsafe.Pointer(uintptr(p) + x)
|
||||
}
|
||||
func readUnaligned32(p unsafe.Pointer) uint32 {
|
||||
q := (*[4]byte)(p)
|
||||
return uint32(q[0]) | uint32(q[1])<<8 | uint32(q[2])<<16 | uint32(q[3])<<24
|
||||
}
|
||||
|
||||
func rotl31(x uint64) uint64 {
|
||||
return (x << 31) | (x >> (64 - 31))
|
||||
}
|
||||
func readUnaligned64(p unsafe.Pointer) uint64 {
|
||||
q := (*[8]byte)(p)
|
||||
return uint64(q[0]) | uint64(q[1])<<8 | uint64(q[2])<<16 | uint64(q[3])<<24 | uint64(q[4])<<32 | uint64(q[5])<<40 | uint64(q[6])<<48 | uint64(q[7])<<56
|
||||
}
|
||||
@ -27,6 +27,7 @@ const (
|
||||
|
||||
// New creates a new Matcher based on the given pattern.
|
||||
func (t Type) New(pattern string) (Matcher, error) {
|
||||
// 1. regex matching is case-sensitive
|
||||
switch t {
|
||||
case Full:
|
||||
return fullMatcher(pattern), nil
|
||||
|
||||
@ -91,3 +91,172 @@ func TestMatcherGroup(t *testing.T) {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestACAutomaton(t *testing.T) {
|
||||
cases1 := []struct {
|
||||
pattern string
|
||||
mType Type
|
||||
input string
|
||||
output bool
|
||||
}{
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Domain,
|
||||
input: "www.xtls.github.io",
|
||||
output: true,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Domain,
|
||||
input: "xtls.github.io",
|
||||
output: true,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Domain,
|
||||
input: "www.xtis.github.io",
|
||||
output: false,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Domain,
|
||||
input: "tls.github.io",
|
||||
output: false,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Domain,
|
||||
input: "xxtls.github.io",
|
||||
output: false,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Full,
|
||||
input: "xtls.github.io",
|
||||
output: true,
|
||||
},
|
||||
{
|
||||
pattern: "xtls.github.io",
|
||||
mType: Full,
|
||||
input: "xxtls.github.io",
|
||||
output: false,
|
||||
},
|
||||
}
|
||||
for _, test := range cases1 {
|
||||
var ac = NewACAutomaton()
|
||||
ac.Add(test.pattern, test.mType)
|
||||
ac.Build()
|
||||
if m := ac.Match(test.input); m != test.output {
|
||||
t.Error("unexpected output: ", m, " for test case ", test)
|
||||
}
|
||||
}
|
||||
{
|
||||
cases2Input := []struct {
|
||||
pattern string
|
||||
mType Type
|
||||
}{
|
||||
{
|
||||
pattern: "163.com",
|
||||
mType: Domain,
|
||||
},
|
||||
{
|
||||
pattern: "m.126.com",
|
||||
mType: Full,
|
||||
},
|
||||
{
|
||||
pattern: "3.com",
|
||||
mType: Full,
|
||||
},
|
||||
{
|
||||
pattern: "google.com",
|
||||
mType: Substr,
|
||||
},
|
||||
{
|
||||
pattern: "vgoogle.com",
|
||||
mType: Substr,
|
||||
},
|
||||
}
|
||||
var ac = NewACAutomaton()
|
||||
for _, test := range cases2Input {
|
||||
ac.Add(test.pattern, test.mType)
|
||||
}
|
||||
ac.Build()
|
||||
cases2Output := []struct {
|
||||
pattern string
|
||||
res bool
|
||||
}{
|
||||
{
|
||||
pattern: "126.com",
|
||||
res: false,
|
||||
},
|
||||
{
|
||||
pattern: "m.163.com",
|
||||
res: true,
|
||||
},
|
||||
{
|
||||
pattern: "mm163.com",
|
||||
res: false,
|
||||
},
|
||||
{
|
||||
pattern: "m.126.com",
|
||||
res: true,
|
||||
},
|
||||
{
|
||||
pattern: "163.com",
|
||||
res: true,
|
||||
},
|
||||
{
|
||||
pattern: "63.com",
|
||||
res: false,
|
||||
},
|
||||
{
|
||||
pattern: "oogle.com",
|
||||
res: false,
|
||||
},
|
||||
{
|
||||
pattern: "vvgoogle.com",
|
||||
res: true,
|
||||
},
|
||||
}
|
||||
for _, test := range cases2Output {
|
||||
if m := ac.Match(test.pattern); m != test.res {
|
||||
t.Error("unexpected output: ", m, " for test case ", test)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
{
|
||||
cases3Input := []struct {
|
||||
pattern string
|
||||
mType Type
|
||||
}{
|
||||
{
|
||||
pattern: "video.google.com",
|
||||
mType: Domain,
|
||||
},
|
||||
{
|
||||
pattern: "gle.com",
|
||||
mType: Domain,
|
||||
},
|
||||
}
|
||||
var ac = NewACAutomaton()
|
||||
for _, test := range cases3Input {
|
||||
ac.Add(test.pattern, test.mType)
|
||||
}
|
||||
ac.Build()
|
||||
cases3Output := []struct {
|
||||
pattern string
|
||||
res bool
|
||||
}{
|
||||
{
|
||||
pattern: "google.com",
|
||||
res: false,
|
||||
},
|
||||
}
|
||||
for _, test := range cases3Output {
|
||||
if m := ac.Match(test.pattern); m != test.res {
|
||||
t.Error("unexpected output: ", m, " for test case ", test)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -98,6 +98,8 @@ type RouterRule struct {
|
||||
Type string `json:"type"`
|
||||
OutboundTag string `json:"outboundTag"`
|
||||
BalancerTag string `json:"balancerTag"`
|
||||
|
||||
DomainMatcher string `json:"domainMatcher"`
|
||||
}
|
||||
|
||||
func ParseIP(s string) (*router.CIDR, error) {
|
||||
@ -491,6 +493,10 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
|
||||
return nil, newError("neither outboundTag nor balancerTag is specified in routing rule")
|
||||
}
|
||||
|
||||
if rawFieldRule.DomainMatcher != "" {
|
||||
rule.DomainMatcher = rawFieldRule.DomainMatcher
|
||||
}
|
||||
|
||||
if rawFieldRule.Domain != nil {
|
||||
for _, domain := range *rawFieldRule.Domain {
|
||||
rules, err := parseDomainRule(domain)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user