chore: add force-dns-mapping in sniffer

component/sniffer/dispatcher.go

@@ -3,19 +3,18 @@ package sniffer
 import (
 	"errors"
 	"fmt"
-	"github.com/Dreamacro/clash/common/cache"
-	"github.com/Dreamacro/clash/constant/sniffer"
 	"net"
 	"net/netip"
 	"strconv"
 	"sync"
 	"time"
 
-	"github.com/Dreamacro/clash/component/trie"
+	"github.com/Dreamacro/clash/common/cache"
-
+	N "github.com/Dreamacro/clash/common/net"
-	CN "github.com/Dreamacro/clash/common/net"
 	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/trie"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/sniffer"
 	"github.com/Dreamacro/clash/log"
 )
 
@@ -25,30 +24,29 @@ var (
 	ErrNoClue               = errors.New("not enough information for making a decision")
 )
 
-var Dispatcher SnifferDispatcher
+var Dispatcher *SnifferDispatcher
 
-type (
+type SnifferDispatcher struct {
-	SnifferDispatcher struct {
 	enable bool
 
 	sniffers []sniffer.Sniffer
 
-		foreDomain *trie.DomainTrie[bool]
+	forceDomain *trie.DomainTrie[bool]
 	skipSNI     *trie.DomainTrie[bool]
 	portRanges  *[]utils.Range[uint16]
 	skipList    *cache.LruCache[string, uint8]
 	rwMux       sync.RWMutex
-	}
+
-)
+	forceDnsMapping bool
+}
 
 func (sd *SnifferDispatcher) TCPSniff(conn net.Conn, metadata *C.Metadata) {
-	bufConn, ok := conn.(*CN.BufferedConn)
+	bufConn, ok := conn.(*N.BufferedConn)
 	if !ok {
 		return
 	}
 
-	if metadata.Host == "" || sd.foreDomain.Search(metadata.Host) != nil {
+	if metadata.Host == "" || sd.forceDomain.Search(metadata.Host) != nil || (metadata.DNSMode == C.DNSMapping && sd.forceDnsMapping) {
-
 		port, err := strconv.ParseUint(metadata.DstPort, 10, 16)
 		if err != nil {
 			log.Debugln("[Sniffer] Dst port is error")
@@ -114,7 +112,7 @@ func (sd *SnifferDispatcher) Enable() bool {
 	return sd.enable
 }
 
-func (sd *SnifferDispatcher) sniffDomain(conn *CN.BufferedConn, metadata *C.Metadata) (string, error) {
+func (sd *SnifferDispatcher) sniffDomain(conn *N.BufferedConn, metadata *C.Metadata) (string, error) {
 	for _, s := range sd.sniffers {
 		if s.SupportNetwork() == C.TCP {
 			_ = conn.SetReadDeadline(time.Now().Add(1 * time.Second))
@@ -177,13 +175,14 @@ func NewCloseSnifferDispatcher() (*SnifferDispatcher, error) {
 }
 
 func NewSnifferDispatcher(needSniffer []sniffer.Type, forceDomain *trie.DomainTrie[bool],
-	skipSNI *trie.DomainTrie[bool], ports *[]utils.Range[uint16]) (*SnifferDispatcher, error) {
+	skipSNI *trie.DomainTrie[bool], ports *[]utils.Range[uint16], forceDnsMapping bool) (*SnifferDispatcher, error) {
 	dispatcher := SnifferDispatcher{
 		enable:          true,
-		foreDomain: forceDomain,
+		forceDomain:     forceDomain,
 		skipSNI:         skipSNI,
 		portRanges:      ports,
 		skipList:        cache.NewLRUCache[string, uint8](cache.WithSize[string, uint8](128), cache.WithAge[string, uint8](600)),
+		forceDnsMapping: forceDnsMapping,
 	}
 
 	for _, snifferName := range needSniffer {

component/sniffer/http_sniffer.go

@@ -4,9 +4,10 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	C "github.com/Dreamacro/clash/constant"
 	"net"
 	"strings"
+
+	C "github.com/Dreamacro/clash/constant"
 )
 
 var (

config/config.go

@@ -201,6 +201,7 @@ type Sniffer struct {
 	ForceDomain     *trie.DomainTrie[bool]
 	SkipDomain      *trie.DomainTrie[bool]
 	Ports           *[]utils.Range[uint16]
+	ForceDnsMapping bool
 }
 
 // Experimental config
@@ -330,6 +331,7 @@ type RawSniffer struct {
 	ForceDomain     []string `yaml:"force-domain" json:"force-domain"`
 	SkipDomain      []string `yaml:"skip-domain" json:"skip-domain"`
 	Ports           []string `yaml:"port-whitelist" json:"port-whitelist"`
+	ForceDnsMapping bool     `yaml:"force-dns-mapping" json:"force-dns-mapping"`
 }
 
 // EBpf config
@@ -424,6 +426,7 @@ func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
 			ForceDomain:     []string{},
 			SkipDomain:      []string{},
 			Ports:           []string{},
+			ForceDnsMapping: true,
 		},
 		Profile: Profile{
 			StoreSelected: true,
@@ -1174,6 +1177,7 @@ func parseTun(rawTun RawTun, general *General, dnsCfg *DNS) (*Tun, error) {
 func parseSniffer(snifferRaw RawSniffer) (*Sniffer, error) {
 	sniffer := &Sniffer{
 		Enable:          snifferRaw.Enable,
+		ForceDnsMapping: snifferRaw.ForceDnsMapping,
 	}
 
 	var ports []utils.Range[uint16]

context/conn.go

@@ -1,10 +1,11 @@
 package context
 
 import (
-	CN "github.com/Dreamacro/clash/common/net"
 	"net"
 
+	N "github.com/Dreamacro/clash/common/net"
 	C "github.com/Dreamacro/clash/constant"
+
 	"github.com/gofrs/uuid"
 )
 
@@ -20,7 +21,7 @@ func NewConnContext(conn net.Conn, metadata *C.Metadata) *ConnContext {
 	return &ConnContext{
 		id:       id,
 		metadata: metadata,
-		conn:     CN.NewBufferedConn(conn),
+		conn:     N.NewBufferedConn(conn),
 	}
 }
 

hub/executor/executor.go

@@ -265,7 +265,7 @@ func updateTun(tun *config.Tun) {
 
 func updateSniffer(sniffer *config.Sniffer) {
 	if sniffer.Enable {
-		dispatcher, err := SNI.NewSnifferDispatcher(sniffer.Sniffers, sniffer.ForceDomain, sniffer.SkipDomain, sniffer.Ports)
+		dispatcher, err := SNI.NewSnifferDispatcher(sniffer.Sniffers, sniffer.ForceDomain, sniffer.SkipDomain, sniffer.Ports, sniffer.ForceDnsMapping)
 		if err != nil {
 			log.Warnln("initial sniffer failed, err:%v", err)
 		}

tunnel/tunnel.go

@@ -107,7 +107,7 @@ func UpdateProxies(newProxies map[string]C.Proxy, newProviders map[string]provid
 
 func UpdateSniffer(dispatcher *sniffer.SnifferDispatcher) {
 	configMux.Lock()
-	sniffer.Dispatcher = *dispatcher
+	sniffer.Dispatcher = dispatcher
 	sniffingEnable = true
 	configMux.Unlock()
 }