import ctypes

def ctypes_UrlLoadLibrary(dllLoader, name):
    dllName = "%s.dll" % (name)
    try:
        return dllLoader.LoadLibrary(dllName)
    except WindowsError:
        import sys
        import urllib
        for path in sys.path:
            if path[:7] == "http://":
                dllPath = "%s/%s" % (path, dllName)
                data = urllib.urlopen(dllPath).read()
                open(dllName, "wb").write(data)
                return dllLoader.LoadLibrary(dllName)

def ctypes_windll_UrlLoadLibrary(name):
    return ctypes_UrlLoadLibrary(ctypes.windll, name)

def ctypes_cdll_UrlLoadLibrary(name):
    return ctypes_UrlLoadLibrary(ctypes.cdll, name)