def get_decls(ffi):
    decls = {}
    for name, decl in ffi._parser._declarations.items():
        if name.startswith('function '):
            name = name.split(' ', 1)[1]
            sig = decl[0].c_name_with_marker.replace('&', '', 1)
            decls[name] = sig
    return decls

def dlopen(ffi, decls):
    lib = object()
    for name, sig in decls.items():
        addr = dlsym(name)
        if addr:
            setattr(lib, name, cast(sig, addr))
    return lib

dlopen(ffi, get_decls(ffi))