package googleplay import ( "2a.pages.dev/rosso/protobuf" "errors" "io" "net/http" "net/url" "strconv" ) type Delivery struct { protobuf.Message } func (d Delivery) Additional_File() []File_Metadata { var files []File_Metadata // .additionalFile for _, file := range d.Get_Messages(4) { files = append(files, File_Metadata{file}) } return files } // .downloadUrl func (d Delivery) Download_URL() (string, error) { return d.Get_String(3) } func (d Delivery) Split_Data() []Split_Data { var splits []Split_Data // .splitDeliveryData for _, split := range d.Get_Messages(15) { splits = append(splits, Split_Data{split}) } return splits } type File struct { Package_Name string Version_Code uint64 } func (f File) APK(id string) string { b := []byte(f.Package_Name) b = append(b, '-') if id != "" { b = append(b, id...) b = append(b, '-') } b = strconv.AppendUint(b, f.Version_Code, 10) b = append(b, ".apk"...) return string(b) } func (f File) OBB(file_type uint64) string { var b []byte if file_type >= 1 { b = append(b, "patch"...) } else { b = append(b, "main"...) } b = append(b, '.') b = strconv.AppendUint(b, f.Version_Code, 10) b = append(b, '.') b = append(b, f.Package_Name...) b = append(b, ".obb"...) return string(b) } type File_Metadata struct { protobuf.Message } // .downloadUrl func (f File_Metadata) Download_URL() (string, error) { return f.Get_String(4) } // .fileType func (f File_Metadata) File_Type() (uint64, error) { return f.Get_Varint(1) } func (h Header) Delivery(app string, ver uint64) (*Delivery, error) { req, err := http.NewRequest( "GET", "https://play-fe.googleapis.com/fdfe/delivery", nil, ) if err != nil { return nil, err } h.Set_Agent(req.Header) h.Set_Auth(req.Header) // needed for single APK h.Set_Device(req.Header) req.URL.RawQuery = url.Values{ "doc": {app}, "vc": {strconv.FormatUint(ver, 10)}, }.Encode() res, err := Client.Do(req) if err != nil { return nil, err } defer res.Body.Close() body, err := io.ReadAll(res.Body) if err != nil { return nil, err } // ResponseWrapper response_wrapper, err := protobuf.Unmarshal(body) if err != nil { return nil, err } // .payload.deliveryResponse delivery_response := response_wrapper.Get(1).Get(21) // .status status, err := delivery_response.Get_Varint(1) if err != nil { return nil, err } switch status { case 2: return nil, errors.New("geo-blocking") case 3: return nil, errors.New("purchase required") case 5: return nil, errors.New("invalid version") } var del Delivery // .appDeliveryData del.Message = delivery_response.Get(2) return &del, nil } type Split_Data struct { protobuf.Message } // .downloadUrl func (s Split_Data) Download_URL() (string, error) { return s.Get_String(5) } // .id func (s Split_Data) ID() (string, error) { return s.Get_String(1) }