def proxy_bypass_registry(host):
        try:
            import _winreg
            import re
        except ImportError:
            # Std modules, so should be around - but you never know!
            return 0
        try:
            internetSettings = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = _winreg.QueryValueEx(internetSettings,
                                               'ProxyEnable')[0]
            proxyOverride = str(_winreg.QueryValueEx(internetSettings,
                                                     'ProxyOverride')[0])
            # ^^^^ Returned as Unicode but problems if not converted to ASCII
        except WindowsError:
            return 0
        if not proxyEnable or not proxyOverride:
            return 0
        # try to make a host list from name and IP address.
        rawHost, port = splitport(host)
        host = [rawHost]
        try:
            addr = socket.gethostbyname(rawHost)
            if addr != rawHost:
                host.append(addr)
        except socket.error:
            pass
        try:
            fqdn = socket.getfqdn(rawHost)
            if fqdn != rawHost:
                host.append(fqdn)
        except socket.error:
            pass
        # make a check value list from the registry entry: replace the
        # '<local>' string by the localhost entry and the corresponding
        # canonical entry.
        proxyOverride = proxyOverride.split(';')
        # now check if we match one of the registry values.
        for test in proxyOverride:
            if test == '<local>':
                if '.' not in rawHost:
                    return 1
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            for val in host:
                # print "%s <--> %s" %( test, val )
                if re.match(test, val, re.I):
                    return 1
        return 0
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/urllib.py/proxy_bypass_registry/original