diff --git a/common/protoext/extensions.pb.go b/common/protoext/extensions.pb.go
index 471dd41a1..081617e08 100644
--- a/common/protoext/extensions.pb.go
+++ b/common/protoext/extensions.pb.go
@@ -84,6 +84,10 @@ type FieldOpt struct {
 	AnyWants          []string `protobuf:"bytes,1,rep,name=any_wants,json=anyWants,proto3" json:"any_wants,omitempty"`
 	AllowedValues     []string `protobuf:"bytes,2,rep,name=allowed_values,json=allowedValues,proto3" json:"allowed_values,omitempty"`
 	AllowedValueTypes []string `protobuf:"bytes,3,rep,name=allowed_value_types,json=allowedValueTypes,proto3" json:"allowed_value_types,omitempty"`
+	// convert_time_read_file_into read a file into another field, and clear this field during input parsing
+	ConvertTimeReadFileInto string `protobuf:"bytes,4,opt,name=convert_time_read_file_into,json=convertTimeReadFileInto,proto3" json:"convert_time_read_file_into,omitempty"`
+	// forbidden marks a boolean to be inaccessible to user
+	Forbidden bool `protobuf:"varint,5,opt,name=forbidden,proto3" json:"forbidden,omitempty"`
 }
 
 func (x *FieldOpt) Reset() {
@@ -139,6 +143,20 @@ func (x *FieldOpt) GetAllowedValueTypes() []string {
 	return nil
 }
 
+func (x *FieldOpt) GetConvertTimeReadFileInto() string {
+	if x != nil {
+		return x.ConvertTimeReadFileInto
+	}
+	return ""
+}
+
+func (x *FieldOpt) GetForbidden() bool {
+	if x != nil {
+		return x.Forbidden
+	}
+	return false
+}
+
 var file_common_protoext_extensions_proto_extTypes = []protoimpl.ExtensionInfo{
 	{
 		ExtendedType:  (*descriptorpb.MessageOptions)(nil),
@@ -183,35 +201,41 @@ var file_common_protoext_extensions_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/infra/conf/protofilter/errors.generated.go b/infra/conf/protofilter/errors.generated.go
new file mode 100644
index 000000000..5115f1f7e
--- /dev/null
+++ b/infra/conf/protofilter/errors.generated.go
@@ -0,0 +1,9 @@
+package protofilter
+
+import "github.com/v2fly/v2ray-core/v4/common/errors"
+
+type errPathObjHolder struct{}
+
+func newError(values ...interface{}) *errors.Error {
+	return errors.New(values...).WithPathObj(errPathObjHolder{})
+}