Resource file found in CPB firmware archives, mostly used on older CoolPad phones and/or tablets. The only observed files are called "ResPack.cfg".
This page hosts a formal specification of ResPack using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.
All parsing code for Ruby generated by Kaitai Struct depends on the Ruby runtime library. You have to install it before you can parse data.
The Ruby runtime library can be installed from RubyGems:
gem install kaitai-structParse a local file and get structure in memory:
data = Respack.from_file("path/to/local/file.cfg")
Or parse structure from a string of bytes:
bytes = "\x00\x01\x02..."
data = Respack.new(Kaitai::Struct::Stream.new(bytes))
After that, one can get various attributes from the structure by invoking getter methods like:
data.header # => get header
# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
require 'kaitai/struct/struct'
unless Gem::Version.new(Kaitai::Struct::VERSION) >= Gem::Version.new('0.9')
raise "Incompatible Kaitai Struct Ruby API: 0.9 or later is required, but you have #{Kaitai::Struct::VERSION}"
end
##
# Resource file found in CPB firmware archives, mostly used on older CoolPad
# phones and/or tablets. The only observed files are called "ResPack.cfg".
class Respack < Kaitai::Struct::Struct
def initialize(_io, _parent = nil, _root = self)
super(_io, _parent, _root)
_read
end
def _read
@header = Header.new(@_io, self, @_root)
@json = (@_io.read_bytes(header.len_json)).force_encoding("UTF-8")
self
end
class Header < Kaitai::Struct::Struct
def initialize(_io, _parent = nil, _root = self)
super(_io, _parent, _root)
_read
end
def _read
@magic = @_io.read_bytes(2)
raise Kaitai::Struct::ValidationNotEqualError.new([82, 83].pack('C*'), magic, _io, "/types/header/seq/0") if not magic == [82, 83].pack('C*')
@unknown = @_io.read_bytes(8)
@len_json = @_io.read_u4le
@md5 = (@_io.read_bytes(32)).force_encoding("UTF-8")
self
end
attr_reader :magic
attr_reader :unknown
attr_reader :len_json
##
# MD5 of data that follows the header
attr_reader :md5
end
attr_reader :header
attr_reader :json
end