Python winreg 模块，QueryValueEx() 实例源码

def __init__(self, **kwargs):
        python_version = kwargs.pop('python', '3.4')
        python_path = None
        for node in ('Wow6432Node\\', ''):
            try:
                key = compat_winreg.OpenKey(
                    compat_winreg.HKEY_LOCAL_MACHINE,
                    r'SOFTWARE\%sPython\PythonCore\%s\InstallPath' % (node, python_version))
                try:
                    python_path, _ = compat_winreg.QueryValueEx(key, '')
                finally:
                    compat_winreg.CloseKey(key)
                break
            except Exception:
                pass

        if not python_path:
            raise BuildError('No such Python version: %s' % python_version)

        self.pythonPath = python_path

        super(PythonBuilder, self).__init__(**kwargs)

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def is_autostart_enabled(self):
        if os.name == 'nt':
            with winreg.OpenKey(winreg.HKEY_CURRENT_USER, self._windows_run_reg_key, 0, winreg.KEY_ALL_ACCESS) as key:
                try:
                    reg_value, reg_type = winreg.QueryValueEx(key, const.APP_NAME)
                    if reg_type == winreg.REG_SZ and reg_value == self._get_executable_path():
                        return True
                    else:
                        try:
                            winreg.DeleteValue(key, self.WIN_REG_AUTORUN_KEY)
                        except OSError:
                            pass        # key does not exist
                except:
                    return False
        else:
            return os.path.exists(self._linux_autostart_file)

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def __init__(self, **kwargs):
        python_version = kwargs.pop('python', '3.4')
        python_path = None
        for node in ('Wow6432Node\\', ''):
            try:
                key = compat_winreg.OpenKey(
                    compat_winreg.HKEY_LOCAL_MACHINE,
                    r'SOFTWARE\%sPython\PythonCore\%s\InstallPath' % (node, python_version))
                try:
                    python_path, _ = compat_winreg.QueryValueEx(key, '')
                finally:
                    compat_winreg.CloseKey(key)
                break
            except Exception:
                pass

        if not python_path:
            raise BuildError('No such Python version: %s' % python_version)

        self.pythonPath = python_path

        super(PythonBuilder, self).__init__(**kwargs)

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def test_get_home_dir_8():
    """Using registry hack for 'My Documents', os=='nt'

    HOMESHARE, HOMEDRIVE, HOMEPATH, USERPROFILE and others are missing.
    """
    os.name = 'nt'
    # Remove from stub environment all keys that may be set
    for key in ['HOME', 'HOMESHARE', 'HOMEDRIVE', 'HOMEPATH', 'USERPROFILE']:
        env.pop(key, None)

    class key:
        def Close(self):
            pass

    with patch.object(wreg, 'OpenKey', return_value=key()), \
         patch.object(wreg, 'QueryValueEx', return_value=[abspath(HOME_TEST_DIR)]):
        home_dir = path.get_home_dir()
    nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))

def _win32_getvalue(key,name,default=''):

    """ Read a value for name from the registry key.

        In case this fails, default is returned.

    """
    try:
        # Use win32api if available
        from win32api import RegQueryValueEx
    except ImportError:
        # On Python 2.0 and later, emulate using winreg
        import winreg
        RegQueryValueEx = winreg.QueryValueEx
    try:
        return RegQueryValueEx(key,name)
    except:
        return default

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _RegistryGetValueUsingWinReg(key, value):
  """Use the _winreg module to obtain the value of a registry key.

  Args:
    key: The registry key.
    value: The particular registry value to read.
  Return:
    contents of the registry key's value, or None on failure.  Throws
    ImportError if _winreg is unavailable.
  """
  try:
    import _winreg
  except ImportError:
    import winreg as _winreg
  try:
    root, subkey = key.split('\\', 1)
    assert root == 'HKLM'  # Only need HKLM for now.
    with _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, subkey) as hkey:
      return _winreg.QueryValueEx(hkey, value)[0]
  except WindowsError:
    return None

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    import winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders")
    dir, type = winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _win32_getvalue(key,name,default=''):

    """ Read a value for name from the registry key.

        In case this fails, default is returned.

    """
    try:
        # Use win32api if available
        from win32api import RegQueryValueEx
    except ImportError:
        # On Python 2.0 and later, emulate using winreg
        import winreg
        RegQueryValueEx = winreg.QueryValueEx
    try:
        return RegQueryValueEx(key,name)
    except:
        return default

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def get_steam_path():
    """Get the path for Steam from the Steam process. If that fails, it uses the registry on Windows.
    Returns:
        str: The path to Steam. If the path could not be found, the current directory is returned instead (os.curdir)
    """
    if psutil:
        for pid in psutil.process_iter():
            try:
                if pid.name().lower() == 'steam.exe' or pid.name().lower() == 'steam':
                    return os.path.dirname(pid.exe())
            except psutil.Error:
                logger.exception("Could not get Steam path from its process.")

    if winreg:
        try:
            reg_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, r'Software\Valve\Steam')
            return os.path.normpath(winreg.QueryValueEx(reg_key, r'SteamPath')[0])
        except WindowsError:
            logger.exception("Could not query registry for Steam path")

    return os.curdir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def test_get_home_dir_8():
    """Using registry hack for 'My Documents', os=='nt'

    HOMESHARE, HOMEDRIVE, HOMEPATH, USERPROFILE and others are missing.
    """
    os.name = 'nt'
    # Remove from stub environment all keys that may be set
    for key in ['HOME', 'HOMESHARE', 'HOMEDRIVE', 'HOMEPATH', 'USERPROFILE']:
        env.pop(key, None)

    class key:
        def Close(self):
            pass

    with patch.object(wreg, 'OpenKey', return_value=key()), \
         patch.object(wreg, 'QueryValueEx', return_value=[abspath(HOME_TEST_DIR)]):
        home_dir = path.get_home_dir()
    nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def get_home_dir(self, username):
            """Return the user's profile directory, the closest thing
            to a user home directory we have on Windows.
            """
            try:
                sid = win32security.ConvertSidToStringSid(
                    win32security.LookupAccountName(None, username)[0])
            except pywintypes.error as err:
                raise AuthorizerError(err)
            path = r"SOFTWARE\Microsoft\Windows NT" \
                   r"\CurrentVersion\ProfileList" + "\\" + sid
            try:
                key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, path)
            except WindowsError:
                raise AuthorizerError(
                    "No profile directory defined for user %s" % username)
            value = winreg.QueryValueEx(key, "ProfileImagePath")[0]
            home = win32api.ExpandEnvironmentStrings(value)
            if not PY3 and not isinstance(home, unicode):
                home = home.decode('utf8')
            return home

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def getEnvironment(scope, name):
    assert scope in ('user', 'system')

    value = ''

    if platform.system() == 'Windows':
        root, subkey = getWindowsEnvironmentKey(scope)
        key = winreg.OpenKey(root, subkey, 0, winreg.KEY_READ)

        try:
            value, _ = winreg.QueryValueEx(key, name)
        except WindowsError:
            value = ''
    else:
        if name.lower() == 'uid':
            return str(os.geteuid())

        if len(os_user_name) > 0:
            ret, cret = syscommand('su -l %s -c \'echo ${%s}\'' % (os_user_name, name), True)
            if len(ret) > 0:
                value = ret[0].strip()
        else:
            value = os.environ.get(name, "")

    return value

def _win32_getvalue(key, name, default=''):

    """ Read a value for name from the registry key.

        In case this fails, default is returned.

    """
    try:
        # Use win32api if available
        from win32api import RegQueryValueEx
    except ImportError:
        # On Python 2.0 and later, emulate using winreg
        import winreg
        RegQueryValueEx = winreg.QueryValueEx
    try:
        return RegQueryValueEx(key, name)
    except:
        return default

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def _get_win_folder_from_registry(csidl_name):
    """This is a fallback technique at best. I'm not sure if using the
    registry for this guarantees us the correct answer for all CSIDL_*
    names.
    """
    if PY3:
      import winreg as _winreg
    else:
      import _winreg

    shell_folder_name = {
        "CSIDL_APPDATA": "AppData",
        "CSIDL_COMMON_APPDATA": "Common AppData",
        "CSIDL_LOCAL_APPDATA": "Local AppData",
    }[csidl_name]

    key = _winreg.OpenKey(
        _winreg.HKEY_CURRENT_USER,
        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
    )
    dir, type = _winreg.QueryValueEx(key, shell_folder_name)
    return dir

def get_proxy_state():
    AutoConfigURL = ProxyServer = None
    try:
        AutoConfigURL, reg_type = winreg.QueryValueEx(SETTINGS, 'AutoConfigURL')
        AutoConfigURL = proxy_server(AutoConfigURL)
    except:
        pass
    try:
        ProxyEnable, reg_type = winreg.QueryValueEx(SETTINGS, 'ProxyEnable')
        if ProxyEnable:
            ProxyServer, reg_type = winreg.QueryValueEx(SETTINGS, 'ProxyServer')
            ProxyServer = proxy_server(ProxyServer)
    except:
        pass
    if AutoConfigURL and ProxyServer:
        ProxyServer.pac = AutoConfigURL.pac
        ProxyServer.type |= 1
    elif AutoConfigURL:
        ProxyServer = AutoConfigURL
    elif ProxyServer:
        pass
    else:
        ProxyServer = proxy_server(None)
    return ProxyServer

def test_get_home_dir_8():
    """Using registry hack for 'My Documents', os=='nt'

    HOMESHARE, HOMEDRIVE, HOMEPATH, USERPROFILE and others are missing.
    """
    os.name = 'nt'
    # Remove from stub environment all keys that may be set
    for key in ['HOME', 'HOMESHARE', 'HOMEDRIVE', 'HOMEPATH', 'USERPROFILE']:
        env.pop(key, None)

    class key:
        def Close(self):
            pass

    with patch.object(wreg, 'OpenKey', return_value=key()), \
         patch.object(wreg, 'QueryValueEx', return_value=[abspath(HOME_TEST_DIR)]):
        home_dir = path.get_home_dir()
    nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))

def get_password(self, service, username):
        """Get password of the username for the service
        """
        try:
            # fetch the password
            key = r'Software\%s\Keyring' % service
            hkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, key)
            password_saved = winreg.QueryValueEx(hkey, username)[0]
            password_base64 = password_saved.encode('ascii')
            # decode with base64
            password_encrypted = base64.decodestring(password_base64)
            # decrypted the password
            password = _win_crypto.decrypt(password_encrypted).decode('utf-8')
        except EnvironmentError:
            password = None
        return password

def _read_registry(root,key,value):
    if _is_py2:
        import _winreg as winreg
    else:
        import winreg
    try:
        hkey = winreg.OpenKey(root, key)
    except:
        return None
    try:
        (val, typ) = winreg.QueryValueEx(hkey, value)
    except:
        winreg.CloseKey(hkey)
        return None
    winreg.CloseKey(hkey)
    return val

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def _lookup_win(self, key, basename, styles, fail=False):
        for suffix in ('', ' (TrueType)'):
            for style in styles:
                try:
                    valname = '%s%s%s' % (basename, style and ' '+style, suffix)
                    val, _ = _winreg.QueryValueEx(key, valname)
                    return val
                except EnvironmentError:
                    continue
        else:
            if fail:
                raise FontNotFound('Font %s (%s) not found in registry' %
                                   (basename, styles[0]))
            return None

def _config_win32_fromkey(self, key):
        """Extract DNS info from a registry key."""
        try:
            servers, rtype = _winreg.QueryValueEx(key, 'NameServer')
        except WindowsError:
            servers = None
        if servers:
            self._config_win32_nameservers(servers)
            try:
                dom, rtype = _winreg.QueryValueEx(key, 'Domain')
                if dom:
                    self._config_win32_domain(dom)
            except WindowsError:
                pass
        else:
            try:
                servers, rtype = _winreg.QueryValueEx(key, 'DhcpNameServer')
            except WindowsError:
                servers = None
            if servers:
                self._config_win32_nameservers(servers)
                try:
                    dom, rtype = _winreg.QueryValueEx(key, 'DhcpDomain')
                    if dom:
                        self._config_win32_domain(dom)
                except WindowsError:
                    pass
        try:
            search, rtype = _winreg.QueryValueEx(key, 'SearchList')
        except WindowsError:
            search = None
        if search:
            self._config_win32_search(search)

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def locate_docpath():
    addon_prefs = bpy.context.user_preferences.addons[__package__].preferences
    # Use the system preference if its set.
    pov_documents = addon_prefs.docpath_povray
    if pov_documents:
        if os.path.exists(pov_documents):
            return pov_documents
        else:
            print("User Preferences path to povray documents %r NOT FOUND, checking $PATH" % pov_documents)

    # Windows Only
    if sys.platform[:3] == "win":
        import winreg
        try:
            win_reg_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                "Software\\POV-Ray\\v3.7\\Windows")         
            win_docpath = winreg.QueryValueEx(win_reg_key, "DocPath")[0]
            pov_documents = os.path.join(win_docpath, "Insert Menu")
            if os.path.exists(pov_documents):
                return pov_documents
        except FileNotFoundError:
            return""
    # search the path all os's
    pov_documents_default = "include"

    os_path_ls = os.getenv("PATH").split(':') + [""]

    for dir_name in os_path_ls:
        pov_documents = os.path.join(dir_name, pov_documents_default)
        if os.path.exists(pov_documents):
            return pov_documents
    return ""

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def proxy_bypass_registry(host):
        if is_py3:
            import winreg
        else:
            import _winreg as winreg
        try:
            internetSettings = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
                r'Software\Microsoft\Windows\CurrentVersion\Internet Settings')
            proxyEnable = winreg.QueryValueEx(internetSettings,
                                              'ProxyEnable')[0]
            proxyOverride = winreg.QueryValueEx(internetSettings,
                                                'ProxyOverride')[0]
        except OSError:
            return False
        if not proxyEnable or not proxyOverride:
            return False

        # 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 host:
                    return True
            test = test.replace(".", r"\.")     # mask dots
            test = test.replace("*", r".*")     # change glob sequence
            test = test.replace("?", r".")      # change glob char
            if re.match(test, host, re.I):
                return True
        return False

def _lookup_win(self, key, basename, styles, fail=False):
        for suffix in ('', ' (TrueType)'):
            for style in styles:
                try:
                    valname = '%s%s%s' % (basename, style and ' '+style, suffix)
                    val, _ = _winreg.QueryValueEx(key, valname)
                    return val
                except EnvironmentError:
                    continue
        else:
            if fail:
                raise FontNotFound('Font %s (%s) not found in registry' %
                                   (basename, styles[0]))
            return None

def findTesserAct(default="C:\\Program Files (x86)\\Tesseract-OCR\\tesseract.exe"):
    """Search for Tesseract exceutable via registry."""
    if(not windows):
        return default
    try:
        import winreg
        key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE,
                             "SOFTWARE\\WOW6432Node\\Tesseract-OCR")
        return winreg.QueryValueEx(key, "Path")[0] + '\\tesseract.exe'
    except:
        return default

def getenv(self, name):
        key = winreg.OpenKey(self.root, self.subkey, 0, winreg.KEY_READ)
        try:
            value, _ = winreg.QueryValueEx(key, name)
        except WindowsError:
            value = ''
        winreg.CloseKey(key)
        return value