chore: Something update from clash :) (#606)

Makefile

@@ -31,6 +31,8 @@ PLATFORM_LIST = \
 	linux-mips-hardfloat \
 	linux-mipsle-softfloat \
 	linux-mipsle-hardfloat \
+	linux-riscv64 \
+	linux-loong64 \
 	android-arm64 \
 	freebsd-386 \
 	freebsd-amd64 \
@@ -103,6 +105,9 @@ linux-mips64le:
 
 linux-riscv64:
 	GOARCH=riscv64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+	
+linux-loong64:
+	GOARCH=loong64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 android-arm64:
 	GOARCH=arm64 GOOS=android $(GOBUILD) -o $(BINDIR)/$(NAME)-$@

adapter/outboundgroup/parser.go

@@ -56,12 +56,12 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 	providers := []types.ProxyProvider{}
 
 	if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 {
-		return nil, errMissProxy
+		return nil, fmt.Errorf("%s: %w", groupName, errMissProxy)
 	}
 
 	expectedStatus, err := utils.NewIntRanges[uint16](groupOption.ExpectedStatus)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("%s: %w", groupName, err)
 	}
 
 	status := strings.TrimSpace(groupOption.ExpectedStatus)
@@ -74,17 +74,17 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 	if len(groupOption.Proxies) != 0 {
 		ps, err := getProxies(proxyMap, groupOption.Proxies)
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("%s: %w", groupName, err)
 		}
 
 		if _, ok := providersMap[groupName]; ok {
-			return nil, errDuplicateProvider
+			return nil, fmt.Errorf("%s: %w", groupName, errDuplicateProvider)
 		}
 
 		hc := provider.NewHealthCheck(ps, "", 0, true, nil)
 		pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("%s: %w", groupName, err)
 		}
 
 		// select don't need health check
@@ -107,7 +107,7 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 	if len(groupOption.Use) != 0 {
 		list, err := getProviders(providersMap, groupOption.Use)
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("%s: %w", groupName, err)
 		}
 
 		// different proxy groups use different test URL

adapter/provider/parser.go

@@ -12,7 +12,10 @@ import (
 	types "github.com/Dreamacro/clash/constant/provider"
 )
 
-var errVehicleType = errors.New("unsupport vehicle type")
+var (
+	errVehicleType = errors.New("unsupport vehicle type")
+	errSubPath     = errors.New("path is not subpath of home directory")
+)
 
 type healthCheckSchema struct {
 	Enable         bool   `provider:"enable"`
@@ -64,6 +67,9 @@ func ParseProxyProvider(name string, mapping map[string]any) (types.ProxyProvide
 	case "file":
 		vehicle = resource.NewFileVehicle(path)
 	case "http":
+		if !C.Path.IsSubPath(path) {
+			return nil, fmt.Errorf("%w: %s", errSubPath, path)
+		}
 		vehicle = resource.NewHTTPVehicle(schema.URL, path)
 	default:
 		return nil, fmt.Errorf("%w: %s", errVehicleType, schema.Type)

component/process/process_windows.go

@@ -67,7 +67,7 @@ func findProcessName(network string, ip netip.Addr, srcPort int) (uint32, string
 		err := initWin32API()
 		if err != nil {
 			log.Errorln("Initialize PROCESS-NAME failed: %s", err.Error())
-			log.Warnln("All PROCESS-NAMES rules will be skiped")
+			log.Warnln("All PROCESS-NAMES rules will be skipped")
 			return
 		}
 	})

config/config.go

@@ -913,7 +913,7 @@ func parseNameServer(servers []string, preferH3 bool) ([]dns.NameServer, error)
 			addr, err = hostWithDefaultPort(u.Host, "443")
 			if err == nil {
 				proxyName = ""
-				clearURL := url.URL{Scheme: "https", Host: addr, Path: u.Path}
+				clearURL := url.URL{Scheme: "https", Host: addr, Path: u.Path, User: u.User}
 				addr = clearURL.String()
 				dnsNetType = "https" // DNS over HTTPS
 				if len(u.Fragment) != 0 {

constant/path.go

@@ -56,6 +56,18 @@ func (p *path) Resolve(path string) string {
 	return path
 }
 
+// IsSubPath return true if path is a subpath of homedir
+func (p *path) IsSubPath(path string) bool {
+	homedir := p.HomeDir()
+	path = p.Resolve(path)
+	rel, err := filepath.Rel(homedir, path)
+	if err != nil {
+		return false
+	}
+
+	return !strings.Contains(rel, "..")
+}
+
 func (p *path) MMDB() string {
 	files, err := os.ReadDir(p.homeDir)
 	if err != nil {

dns/resolver.go

@@ -165,7 +165,8 @@ func (r *Resolver) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, e
 			setMsgTTL(msg, uint32(1)) // Continue fetch
 			continueFetch = true
 		} else {
-			setMsgTTL(msg, uint32(time.Until(expireTime).Seconds()))
+			// updating TTL by subtracting common delta time from each DNS record
+			updateMsgTTL(msg, uint32(time.Until(expireTime).Seconds()))
 		}
 		return
 	}

dns/util.go

@@ -21,12 +21,29 @@ import (
 	"github.com/Dreamacro/clash/tunnel"
 
 	D "github.com/miekg/dns"
+	"github.com/samber/lo"
 )
 
 const (
 	MaxMsgSize = 65535
 )
 
+func minimalTTL(records []D.RR) uint32 {
+	return lo.MinBy(records, func(r1 D.RR, r2 D.RR) bool {
+		return r1.Header().Ttl < r2.Header().Ttl
+	}).Header().Ttl
+}
+
+func updateTTL(records []D.RR, ttl uint32) {
+	if len(records) == 0 {
+		return
+	}
+	delta := minimalTTL(records) - ttl
+	for i := range records {
+		records[i].Header().Ttl = lo.Clamp(records[i].Header().Ttl-delta, 1, records[i].Header().Ttl)
+	}
+}
+
 func putMsgToCache(c *cache.LruCache[string, *D.Msg], key string, msg *D.Msg) {
 	// skip dns cache for acme challenge
 	if len(msg.Question) != 0 {
@@ -38,11 +55,11 @@ func putMsgToCache(c *cache.LruCache[string, *D.Msg], key string, msg *D.Msg) {
 	var ttl uint32
 	switch {
 	case len(msg.Answer) != 0:
-		ttl = msg.Answer[0].Header().Ttl
+		ttl = minimalTTL(msg.Answer)
 	case len(msg.Ns) != 0:
-		ttl = msg.Ns[0].Header().Ttl
+		ttl = minimalTTL(msg.Ns)
 	case len(msg.Extra) != 0:
-		ttl = msg.Extra[0].Header().Ttl
+		ttl = minimalTTL(msg.Extra)
 	default:
 		log.Debugln("[DNS] response msg empty: %#v", msg)
 		return
@@ -65,6 +82,12 @@ func setMsgTTL(msg *D.Msg, ttl uint32) {
 	}
 }
 
+func updateMsgTTL(msg *D.Msg, ttl uint32) {
+	updateTTL(msg.Answer, ttl)
+	updateTTL(msg.Ns, ttl)
+	updateTTL(msg.Extra, ttl)
+}
+
 func isIPRequest(q D.Question) bool {
 	return q.Qclass == D.ClassINET && (q.Qtype == D.TypeA || q.Qtype == D.TypeAAAA || q.Qtype == D.TypeCNAME)
 }

go.mod

@@ -1,6 +1,6 @@
 module github.com/Dreamacro/clash
 
-go 1.19
+go 1.20
 
 require (
 	github.com/3andne/restls-client-go v0.1.4

hub/route/server.go

@@ -2,12 +2,14 @@ package route
 
 import (
 	"bytes"
+	"crypto/subtle"
 	"crypto/tls"
 	"encoding/json"
 	"net/http"
 	"runtime/debug"
 	"strings"
 	"time"
+	"unsafe"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
 	CN "github.com/Dreamacro/clash/common/net"
@@ -149,6 +151,12 @@ func Start(addr string, tlsAddr string, secret string,
 
 }
 
+func safeEuqal(a, b string) bool {
+	aBuf := unsafe.Slice(unsafe.StringData(a), len(a))
+	bBuf := unsafe.Slice(unsafe.StringData(b), len(b))
+	return subtle.ConstantTimeCompare(aBuf, bBuf) == 1
+}
+
 func authentication(next http.Handler) http.Handler {
 	fn := func(w http.ResponseWriter, r *http.Request) {
 		if serverSecret == "" {
@@ -159,7 +167,7 @@ func authentication(next http.Handler) http.Handler {
 		// Browser websocket not support custom header
 		if websocket.IsWebSocketUpgrade(r) && r.URL.Query().Get("token") != "" {
 			token := r.URL.Query().Get("token")
-			if token != serverSecret {
+			if !safeEuqal(token, serverSecret) {
 				render.Status(r, http.StatusUnauthorized)
 				render.JSON(w, r, ErrUnauthorized)
 				return
@@ -172,7 +180,7 @@ func authentication(next http.Handler) http.Handler {
 		bearer, token, found := strings.Cut(header, " ")
 
 		hasInvalidHeader := bearer != "Bearer"
-		hasInvalidSecret := !found || token != serverSecret
+		hasInvalidSecret := !found || !safeEuqal(token, serverSecret)
 		if hasInvalidHeader || hasInvalidSecret {
 			render.Status(r, http.StatusUnauthorized)
 			render.JSON(w, r, ErrUnauthorized)

listener/redir/tcp_freebsd.go

@@ -1,12 +1,16 @@
 package redir
 
 import (
+	"encoding/binary"
 	"errors"
 	"net"
+	"net/netip"
 	"syscall"
 	"unsafe"
 
 	"github.com/Dreamacro/clash/transport/socks5"
+
+	"golang.org/x/sys/unix"
 )
 
 const (
@@ -25,28 +29,38 @@ func parserPacket(conn net.Conn) (socks5.Addr, error) {
 		return nil, err
 	}
 
-	var addr socks5.Addr
+	var addr netip.AddrPort
 
 	rc.Control(func(fd uintptr) {
-		addr, err = getorigdst(fd)
+		if ip4 := c.LocalAddr().(*net.TCPAddr).IP.To4(); ip4 != nil {
+			addr, err = getorigdst(fd)
+		} else {
+			addr, err = getorigdst6(fd)
+		}
 	})
 
-	return addr, err
+	return socks5.AddrFromStdAddrPort(addr), err
 }
 
 // Call getorigdst() from linux/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
-func getorigdst(fd uintptr) (socks5.Addr, error) {
-	raw := syscall.RawSockaddrInet4{}
-	siz := unsafe.Sizeof(raw)
-	_, _, err := syscall.Syscall6(syscall.SYS_GETSOCKOPT, fd, syscall.IPPROTO_IP, SO_ORIGINAL_DST, uintptr(unsafe.Pointer(&raw)), uintptr(unsafe.Pointer(&siz)), 0)
+func getorigdst(fd uintptr) (netip.AddrPort, error) {
+	addr := unix.RawSockaddrInet4{}
+	size := uint32(unsafe.Sizeof(addr))
+	_, _, err := syscall.Syscall6(syscall.SYS_GETSOCKOPT, fd, syscall.IPPROTO_IP, SO_ORIGINAL_DST, uintptr(unsafe.Pointer(&addr)), uintptr(unsafe.Pointer(&size)), 0)
 	if err != 0 {
-		return nil, err
+		return netip.AddrPort{}, err
 	}
-
-	addr := make([]byte, 1+net.IPv4len+2)
-	addr[0] = socks5.AtypIPv4
-	copy(addr[1:1+net.IPv4len], raw.Addr[:])
-	port := (*[2]byte)(unsafe.Pointer(&raw.Port)) // big-endian
-	addr[1+net.IPv4len], addr[1+net.IPv4len+1] = port[0], port[1]
-	return addr, nil
+	port := binary.BigEndian.Uint16((*(*[2]byte)(unsafe.Pointer(&addr.Port)))[:])
+	return netip.AddrPortFrom(netip.AddrFrom4(addr.Addr), port), nil
+}
+
+func getorigdst6(fd uintptr) (netip.AddrPort, error) {
+	addr := unix.RawSockaddrInet6{}
+	size := uint32(unsafe.Sizeof(addr))
+	_, _, err := syscall.Syscall6(syscall.SYS_GETSOCKOPT, fd, syscall.IPPROTO_IPV6, IP6T_SO_ORIGINAL_DST, uintptr(unsafe.Pointer(&addr)), uintptr(unsafe.Pointer(&size)), 0)
+	if err != 0 {
+		return netip.AddrPort{}, err
+	}
+	port := binary.BigEndian.Uint16((*(*[2]byte)(unsafe.Pointer(&addr.Port)))[:])
+	return netip.AddrPortFrom(netip.AddrFrom16(addr.Addr), port), nil
 }