file ext ignore case

common/lua/program_test.go

@@ -187,11 +187,20 @@ func TestCompileInlineDiagnostics(t *testing.T) {
 */
 
 func TestCompileFileExtension(t *testing.T) {
-	for _, name := range []string{"script", "script.dat", "script.lua.txt", "script.LUA"} {
+	for _, name := range []string{"script", "script.dat", "script.lua.txt"} {
 		if program, err := Compile(name); program != nil || err == nil || !strings.Contains(err.Error(), "Lua file extension must be .lua") {
 			t.Fatalf("Compile(%q) = %v, %v; want nil program and .lua extension error", name, program, err)
 		}
 	}
+	for _, name := range []string{"script.lua", "script.LUA", "script.Lua", "script.lUa"} {
+		path := filepath.Join(t.TempDir(), name)
+		if err := os.WriteFile(path, []byte("value = 42"), 0o600); err != nil {
+			t.Fatal(err)
+		}
+		if program, err := Compile(path); program == nil || err != nil {
+			t.Fatalf("Compile(%q) = %v, %v; want successful compilation", path, program, err)
+		}
+	}
 }
 
 func TestCompileRejectsReadFailure(t *testing.T) {

common/platform/filesystem/file.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/platform"
@@ -69,7 +70,7 @@ func ReadCert(file string) ([]byte, error) {
 // ResolveLuaFile finds a local .lua script and returns its absolute path.
 // Relative paths: XRAY_LOCATION_CONFDIR > XRAY_LOCATION_CONFIG > working dir > executable dir.
 func ResolveLuaFile(path string) (string, error) {
-	if filepath.Ext(path) != ".lua" {
+	if !strings.EqualFold(filepath.Ext(path), ".lua") {
 		return "", errors.New("Lua file extension must be .lua")
 	}
 	if filepath.IsAbs(path) {

main/commands/all/lua/sign.go

@@ -3,6 +3,7 @@ package lua
 import (
 	"os"
 	"path/filepath"
+	"strings"
 
 	xlua "github.com/xtls/xray-core/common/lua"
 	"github.com/xtls/xray-core/main/commands/base"
@@ -32,7 +33,7 @@ func executeSign(cmd *base.Command, args []string) {
 		cmd.Usage()
 	}
 
-	if filepath.Ext(args[0]) != ".lua" {
+	if !strings.EqualFold(filepath.Ext(args[0]), ".lua") {
 		base.Fatalf("Lua file extension must be .lua")
 	}
 	info, err := os.Stat(args[0])