salt/utils/win_reg.py
# -*- coding: utf-8 -*-
'''
Manage the Windows registry
-----
Hives
-----
Hives are the main sections of the registry and all begin with the word HKEY.
- HKEY_LOCAL_MACHINE
- HKEY_CURRENT_USER
- HKEY_USER
----
Keys
----
Keys are the folders in the registry. Keys can have many nested subkeys. Keys
can have a value assigned to them under the (Default) value name
-----------------
Values or Entries
-----------------
Values/Entries are name/data pairs. There can be many values in a key. The
(Default) value corresponds to the Key itself, the rest are their own name/value
pairs.
:depends: - PyWin32
'''
# When production windows installer is using Python 3, Python 2 code can be removed
from __future__ import absolute_import, print_function, unicode_literals
# Import python libs
import sys
import logging
from salt.ext.six.moves import range # pylint: disable=W0622,import-error
# Import third party libs
try:
import win32gui
import win32api
import win32con
import pywintypes
HAS_WINDOWS_MODULES = True
except ImportError:
HAS_WINDOWS_MODULES = False
# Import Salt libs
import salt.utils.platform
import salt.utils.stringutils
from salt.exceptions import CommandExecutionError
from salt.ext import six
PY2 = sys.version_info[0] == 2
log = logging.getLogger(__name__)
# Define the module's virtual name
__virtualname__ = 'reg'
def __virtual__():
'''
Only works on Windows systems with the PyWin32
'''
if not salt.utils.platform.is_windows():
return (False, 'reg execution module failed to load: '
'The module will only run on Windows systems')
if not HAS_WINDOWS_MODULES:
return (False, 'reg execution module failed to load: '
'One of the following libraries did not load: '
'win32gui, win32con, win32api')
return __virtualname__
def _to_mbcs(vdata):
'''
Converts unicode to to current users character encoding. Use this for values
returned by reg functions
'''
return salt.utils.stringutils.to_unicode(vdata, 'mbcs')
def _to_unicode(vdata):
'''
Converts from current users character encoding to unicode. Use this for
parameters being pass to reg functions
'''
# None does not convert to Unicode
if vdata is None:
return None
return salt.utils.stringutils.to_unicode(vdata, 'utf-8')
class Registry(object): # pylint: disable=R0903
'''
This was put in a class to delay usage until this module is actually used
This class contains all the lookup dicts for working with the registry
'''
def __init__(self):
self.hkeys = {
'HKEY_CURRENT_CONFIG': win32con.HKEY_CURRENT_CONFIG,
'HKEY_CLASSES_ROOT': win32con.HKEY_CLASSES_ROOT,
'HKEY_CURRENT_USER': win32con.HKEY_CURRENT_USER,
'HKEY_LOCAL_MACHINE': win32con.HKEY_LOCAL_MACHINE,
'HKEY_USERS': win32con.HKEY_USERS,
'HKCC': win32con.HKEY_CURRENT_CONFIG,
'HKCR': win32con.HKEY_CLASSES_ROOT,
'HKCU': win32con.HKEY_CURRENT_USER,
'HKLM': win32con.HKEY_LOCAL_MACHINE,
'HKU': win32con.HKEY_USERS,
}
self.vtype = {
'REG_BINARY': win32con.REG_BINARY,
'REG_DWORD': win32con.REG_DWORD,
'REG_EXPAND_SZ': win32con.REG_EXPAND_SZ,
'REG_MULTI_SZ': win32con.REG_MULTI_SZ,
'REG_SZ': win32con.REG_SZ,
'REG_QWORD': win32con.REG_QWORD
}
self.opttype = {
'REG_OPTION_NON_VOLATILE': 0,
'REG_OPTION_VOLATILE': 1
}
# Return Unicode due to from __future__ import unicode_literals
self.vtype_reverse = {
win32con.REG_BINARY: 'REG_BINARY',
win32con.REG_DWORD: 'REG_DWORD',
win32con.REG_EXPAND_SZ: 'REG_EXPAND_SZ',
win32con.REG_MULTI_SZ: 'REG_MULTI_SZ',
win32con.REG_SZ: 'REG_SZ',
win32con.REG_QWORD: 'REG_QWORD'
}
self.opttype_reverse = {
0: 'REG_OPTION_NON_VOLATILE',
1: 'REG_OPTION_VOLATILE'
}
# delete_key_recursive uses this to check the subkey contains enough \
# as we do not want to remove all or most of the registry
self.subkey_slash_check = {
win32con.HKEY_CURRENT_USER: 0,
win32con.HKEY_LOCAL_MACHINE: 1,
win32con.HKEY_USERS: 1,
win32con.HKEY_CURRENT_CONFIG: 1,
win32con.HKEY_CLASSES_ROOT: 1
}
self.registry_32 = {
True: win32con.KEY_READ | win32con.KEY_WOW64_32KEY,
False: win32con.KEY_READ,
}
def __getattr__(self, k):
try:
return self.hkeys[k]
except KeyError:
msg = 'No hkey named \'{0}. Try one of {1}\''
hkeys = ', '.join(self.hkeys)
raise CommandExecutionError(msg.format(k, hkeys))
def key_exists(hive, key, use_32bit_registry=False):
'''
Check that the key is found in the registry. This refers to keys and not
value/data pairs. To check value/data pairs, use ``value_exists``
Args:
hive (str): The hive to connect to
key (str): The key to check
use_32bit_registry (bool): Look in the 32bit portion of the registry
Returns:
bool: True if exists, otherwise False
Usage:
.. code-block:: python
import salt.utils.win_reg as reg
reg.key_exists(hive='HKLM', key='SOFTWARE\\Microsoft')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry]
handle = None
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
return True
except pywintypes.error as exc:
if exc.winerror == 2:
return False
raise
finally:
if handle:
win32api.RegCloseKey(handle)
def value_exists(hive, key, vname, use_32bit_registry=False):
'''
Check that the value/data pair is found in the registry.
.. version-added:: 2018.3.4
Args:
hive (str): The hive to connect to
key (str): The key to check in
vname (str): The name of the value/data pair you're checking
use_32bit_registry (bool): Look in the 32bit portion of the registry
Returns:
bool: True if exists, otherwise False
Usage:
.. code-block:: python
import salt.utils.win_reg as reg
reg.key_exists(hive='HKLM', key='SOFTWARE\\Microsoft')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
local_vname = _to_unicode(vname)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry]
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
except pywintypes.error as exc:
if exc.winerror == 2:
# The key containing the value/data pair does not exist
return False
raise
try:
# RegQueryValueEx returns and accepts unicode data
_, _ = win32api.RegQueryValueEx(handle, local_vname)
# value/data pair exists
return True
except pywintypes.error as exc:
if exc.winerror == 2 and vname is None:
# value/data pair exists but is empty
return True
else:
# value/data pair not found
return False
finally:
win32api.RegCloseKey(handle)
def broadcast_change():
'''
Refresh the windows environment.
.. note::
This will only effect new processes and windows. Services will not see
the change until the system restarts.
Returns:
bool: True if successful, otherwise False
Usage:
.. code-block:: python
import salt.utils.win_reg
winreg.broadcast_change()
'''
# https://msdn.microsoft.com/en-us/library/windows/desktop/ms644952(v=vs.85).aspx
_, res = win32gui.SendMessageTimeout(
win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 0,
win32con.SMTO_ABORTIFHUNG, 5000)
return not bool(res)
def list_keys(hive, key=None, use_32bit_registry=False):
'''
Enumerates the subkeys in a registry key or hive.
Args:
hive (str):
The name of the hive. Can be one of the following:
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USERS or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key (looks like a path) to the value name. If a key is not
passed, the keys under the hive will be returned.
use_32bit_registry (bool):
Accesses the 32bit portion of the registry on 64 bit installations.
On 32bit machines this is ignored.
Returns:
list: A list of keys/subkeys under the hive or key.
Usage:
.. code-block:: python
import salt.utils.win_reg
winreg.list_keys(hive='HKLM', key='SOFTWARE\\Microsoft')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry]
subkeys = []
handle = None
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
for i in range(win32api.RegQueryInfoKey(handle)[0]):
subkey = win32api.RegEnumKey(handle, i)
if PY2:
subkeys.append(_to_mbcs(subkey))
else:
subkeys.append(subkey)
except Exception: # pylint: disable=E0602
log.debug(r'Cannot find key: %s\%s', hive, key, exc_info=True)
return False, r'Cannot find key: {0}\{1}'.format(hive, key)
finally:
if handle:
handle.Close()
return subkeys
def list_values(hive, key=None, use_32bit_registry=False, include_default=True):
'''
Enumerates the values in a registry key or hive.
Args:
hive (str):
The name of the hive. Can be one of the following:
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USER or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key (looks like a path) to the value name. If a key is not
passed, the values under the hive will be returned.
use_32bit_registry (bool):
Accesses the 32bit portion of the registry on 64 bit installations.
On 32bit machines this is ignored.
include_default (bool):
Toggle whether to include the '(Default)' value.
Returns:
list: A list of values under the hive or key.
Usage:
.. code-block:: python
import salt.utils.win_reg
winreg.list_values(hive='HKLM', key='SYSTEM\\CurrentControlSet\\Services\\Tcpip')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry]
handle = None
values = list()
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
for i in range(win32api.RegQueryInfoKey(handle)[1]):
vname, vdata, vtype = win32api.RegEnumValue(handle, i)
if not vname:
if not include_default:
continue
vname = '(Default)'
value = {'hive': local_hive,
'key': local_key,
'vname': _to_mbcs(vname),
'vtype': registry.vtype_reverse[vtype],
'success': True}
# Only convert text types to unicode
if vtype == win32con.REG_MULTI_SZ:
value['vdata'] = [_to_mbcs(i) for i in vdata]
elif vtype in [win32con.REG_SZ, win32con.REG_EXPAND_SZ]:
value['vdata'] = _to_mbcs(vdata)
else:
value['vdata'] = vdata
values.append(value)
except Exception as exc: # pylint: disable=E0602
log.debug(r'Cannot find key: %s\%s', hive, key, exc_info=True)
return False, r'Cannot find key: {0}\{1}'.format(hive, key)
finally:
if handle:
handle.Close()
return values
def read_value(hive, key, vname=None, use_32bit_registry=False):
r'''
Reads a registry value entry or the default value for a key. To read the
default value, don't pass ``vname``
Args:
hive (str): The name of the hive. Can be one of the following:
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USER or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key (looks like a path) to the value name.
vname (str):
The value name. These are the individual name/data pairs under the
key. If not passed, the key (Default) value will be returned.
use_32bit_registry (bool):
Accesses the 32bit portion of the registry on 64bit installations.
On 32bit machines this is ignored.
Returns:
dict: A dictionary containing the passed settings as well as the
value_data if successful. If unsuccessful, sets success to False.
bool: Returns False if the key is not found
If vname is not passed:
- Returns the first unnamed value (Default) as a string.
- Returns none if first unnamed value is empty.
Usage:
The following will get the value of the ``version`` value name in the
``HKEY_LOCAL_MACHINE\\SOFTWARE\\Salt`` key
.. code-block:: python
import salt.utils.win_reg as reg
reg.read_value(hive='HKLM', key='SOFTWARE\\Salt', vname='version')
Usage:
The following will get the default value of the
``HKEY_LOCAL_MACHINE\\SOFTWARE\\Salt`` key
.. code-block:: python
import salt.utils.win_reg as reg
reg.read_value(hive='HKLM', key='SOFTWARE\\Salt')
'''
# If no name is passed, the default value of the key will be returned
# The value name is Default
# Setup the return array
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
local_vname = _to_unicode(vname)
ret = {'hive': local_hive,
'key': local_key,
'vname': local_vname,
'vdata': None,
'success': True}
if not vname:
ret['vname'] = '(Default)'
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry]
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
try:
# RegQueryValueEx returns and accepts unicode data
vdata, vtype = win32api.RegQueryValueEx(handle, local_vname)
if vdata or vdata in [0, '']:
# Only convert text types to unicode
ret['vtype'] = registry.vtype_reverse[vtype]
if vtype == win32con.REG_MULTI_SZ:
ret['vdata'] = [_to_mbcs(i) for i in vdata]
elif vtype in [win32con.REG_SZ, win32con.REG_EXPAND_SZ]:
ret['vdata'] = _to_mbcs(vdata)
else:
ret['vdata'] = vdata
else:
ret['comment'] = 'Empty Value'
except Exception as exc:
if exc.winerror == 2 and vname is None:
ret['vdata'] = ('(value not set)')
ret['vtype'] = 'REG_SZ'
else:
msg = 'Cannot find {0} in {1}\\{2}' \
''.format(local_vname, local_hive, local_key)
log.trace(exc)
log.trace(msg)
ret['comment'] = msg
ret['success'] = False
except Exception as exc: # pylint: disable=E0602
msg = 'Cannot find key: {0}\\{1}'.format(local_hive, local_key)
log.trace(exc)
log.trace(msg)
ret['comment'] = msg
ret['success'] = False
return ret
def set_value(hive,
key,
vname=None,
vdata=None,
vtype='REG_SZ',
use_32bit_registry=False,
volatile=False):
'''
Sets a value in the registry. If ``vname`` is passed, it will be the value
for that value name, otherwise it will be the default value for the
specified key
Args:
hive (str):
The name of the hive. Can be one of the following
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USER or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key (looks like a path) to the value name.
vname (str):
The value name. These are the individual name/data pairs under the
key. If not passed, the key (Default) value will be set.
vdata (str, int, list, bytes):
The value you'd like to set. If a value name (vname) is passed, this
will be the data for that value name. If not, this will be the
(Default) value for the key.
The type of data this parameter expects is determined by the value
type specified in ``vtype``. The correspondence is as follows:
- REG_BINARY: Binary data (str in Py2, bytes in Py3)
- REG_DWORD: int
- REG_EXPAND_SZ: str
- REG_MULTI_SZ: list of str
- REG_QWORD: int
- REG_SZ: str
.. note::
When setting REG_BINARY, string data will be converted to
binary. You can pass base64 encoded using the ``binascii``
built-in module. Use ``binascii.b2a_base64('your data')``
.. note::
The type for the (Default) value is always REG_SZ and cannot be
changed.
.. note::
This parameter is optional. If not passed, the Key will be
created with no associated item/value pairs.
vtype (str):
The value type. The possible values of the vtype parameter are
indicated above in the description of the vdata parameter.
use_32bit_registry (bool):
Sets the 32bit portion of the registry on 64bit installations. On
32bit machines this is ignored.
volatile (bool):
When this parameter has a value of True, the registry key will be
made volatile (i.e. it will not persist beyond a system reset or
shutdown). This parameter only has an effect when a key is being
created and at no other time.
Returns:
bool: True if successful, otherwise False
Usage:
This will set the version value to 2015.5.2 in the SOFTWARE\\Salt key in
the HKEY_LOCAL_MACHINE hive
.. code-block:: python
import salt.utils.win_reg
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='version', vdata='2015.5.2')
Usage:
This function is strict about the type of vdata. For instance this
example will fail because vtype has a value of REG_SZ and vdata has a
type of int (as opposed to str as expected).
.. code-block:: python
import salt.utils.win_reg
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='str_data', vdata=1.2)
Usage:
In this next example vdata is properly quoted and should succeed.
.. code-block:: python
import salt.utils.win_reg
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='str_data', vdata='1.2')
Usage:
This is an example of using vtype REG_BINARY. Both ``set_value``
commands will set the same value ``Salty Test``
.. code-block:: python
import salt.utils.win_reg
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='bin_data', vdata='Salty Test', vtype='REG_BINARY')
import binascii
bin_data = binascii.b2a_base64('Salty Test')
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='bin_data_encoded', vdata=bin_data, vtype='REG_BINARY')
Usage:
An example using vtype REG_MULTI_SZ is as follows:
.. code-block:: python
import salt.utils.win_reg
winreg.set_value(hive='HKLM', key='SOFTWARE\\Salt', vname='list_data', vdata=['Salt', 'is', 'great'], vtype='REG_MULTI_SZ')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
local_vname = _to_unicode(vname)
local_vtype = _to_unicode(vtype)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
vtype_value = registry.vtype[local_vtype]
access_mask = registry.registry_32[use_32bit_registry] | win32con.KEY_ALL_ACCESS
local_vdata = cast_vdata(vdata=vdata, vtype=local_vtype)
if volatile:
create_options = registry.opttype['REG_OPTION_VOLATILE']
else:
create_options = registry.opttype['REG_OPTION_NON_VOLATILE']
handle = None
try:
handle, _ = win32api.RegCreateKeyEx(hkey, local_key, access_mask,
Options=create_options)
win32api.RegSetValueEx(handle, local_vname, 0, vtype_value, local_vdata)
win32api.RegFlushKey(handle)
broadcast_change()
return True
except (win32api.error, SystemError, ValueError, TypeError): # pylint: disable=E0602
log.exception('Encountered error setting registry value')
return False
finally:
if handle:
win32api.RegCloseKey(handle)
def cast_vdata(vdata=None, vtype='REG_SZ'):
'''
Cast the ``vdata` value to the appropriate data type for the registry type
specified in ``vtype``
Args:
vdata (str, int, list, bytes): The data to cast
vtype (str):
The type of data to be written to the registry. Must be one of the
following:
- REG_BINARY
- REG_DWORD
- REG_EXPAND_SZ
- REG_MULTI_SZ
- REG_QWORD
- REG_SZ
Returns:
The vdata cast to the appropriate type. Will be unicode string, binary,
list of unicode strings, or int
Usage:
.. code-block:: python
import salt.utils.win_reg
winreg.cast_vdata(vdata='This is the string', vtype='REG_SZ')
'''
# Check data type and cast to expected type
# int will automatically become long on 64bit numbers
# https://www.python.org/dev/peps/pep-0237/
registry = Registry()
vtype_value = registry.vtype[vtype]
# String Types to Unicode
if vtype_value in [win32con.REG_SZ, win32con.REG_EXPAND_SZ]:
return _to_unicode(vdata)
# Don't touch binary... if it's binary
elif vtype_value == win32con.REG_BINARY:
if isinstance(vdata, six.text_type):
# Unicode data must be encoded
return vdata.encode('utf-8')
return vdata
# Make sure REG_MULTI_SZ is a list of strings
elif vtype_value == win32con.REG_MULTI_SZ:
return [_to_unicode(i) for i in vdata]
# Make sure REG_QWORD is a 64 bit integer
elif vtype_value == win32con.REG_QWORD:
return vdata if six.PY3 else long(vdata) # pylint: disable=incompatible-py3-code,undefined-variable
# Everything else is int
else:
return int(vdata)
def delete_key_recursive(hive, key, use_32bit_registry=False):
'''
.. versionadded:: 2015.5.4
Delete a registry key to include all subkeys and value/data pairs.
Args:
hive (str):
The name of the hive. Can be one of the following
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USER or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key to remove (looks like a path)
use_32bit_registry (bool):
Deletes the 32bit portion of the registry on 64bit
installations. On 32bit machines this is ignored.
Returns:
dict: A dictionary listing the keys that deleted successfully as well as
those that failed to delete.
Usage:
The following example will remove ``salt`` and all its subkeys from the
``SOFTWARE`` key in ``HKEY_LOCAL_MACHINE``:
.. code-block:: python
import salt.utils.win_reg
winreg.delete_key_recursive(hive='HKLM', key='SOFTWARE\\DeleteMe')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
# Instantiate the registry object
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
key_path = local_key
access_mask = registry.registry_32[use_32bit_registry] | win32con.KEY_ALL_ACCESS
if not key_exists(local_hive, local_key, use_32bit_registry):
return False
if (len(key) > 1) and (key.count('\\', 1) < registry.subkey_slash_check[hkey]):
log.error(
'Hive:%s Key:%s; key is too close to root, not safe to remove',
hive, key
)
return False
# Functions for traversing the registry tree
def _subkeys(_key):
'''
Enumerate keys
'''
i = 0
while True:
try:
subkey = win32api.RegEnumKey(_key, i)
yield _to_mbcs(subkey)
i += 1
except Exception: # pylint: disable=E0602
break
def _traverse_registry_tree(_hkey, _keypath, _ret, _access_mask):
'''
Traverse the registry tree i.e. dive into the tree
'''
_key = win32api.RegOpenKeyEx(_hkey, _keypath, 0, _access_mask)
for subkeyname in _subkeys(_key):
subkeypath = '{0}\\{1}'.format(_keypath, subkeyname)
_ret = _traverse_registry_tree(_hkey, subkeypath, _ret, access_mask)
_ret.append(subkeypath)
return _ret
# Get a reverse list of registry keys to be deleted
key_list = []
key_list = _traverse_registry_tree(hkey, key_path, key_list, access_mask)
# Add the top level key last, all subkeys must be deleted first
key_list.append(key_path)
ret = {'Deleted': [],
'Failed': []}
# Delete all sub_keys
for sub_key_path in key_list:
try:
key_handle = win32api.RegOpenKeyEx(hkey, sub_key_path, 0, access_mask)
win32api.RegDeleteKey(key_handle, '')
ret['Deleted'].append(r'{0}\{1}'.format(hive, sub_key_path))
except WindowsError as exc: # pylint: disable=E0602
log.error(exc, exc_info=True)
ret['Failed'].append(r'{0}\{1} {2}'.format(hive, sub_key_path, exc))
broadcast_change()
return ret
def delete_value(hive, key, vname=None, use_32bit_registry=False):
'''
Delete a registry value entry or the default value for a key.
Args:
hive (str):
The name of the hive. Can be one of the following
- HKEY_LOCAL_MACHINE or HKLM
- HKEY_CURRENT_USER or HKCU
- HKEY_USER or HKU
- HKEY_CLASSES_ROOT or HKCR
- HKEY_CURRENT_CONFIG or HKCC
key (str):
The key (looks like a path) to the value name.
vname (str):
The value name. These are the individual name/data pairs under the
key. If not passed, the key (Default) value will be deleted.
use_32bit_registry (bool):
Deletes the 32bit portion of the registry on 64bit installations. On
32bit machines this is ignored.
Return:
bool: True if successful, otherwise False
Usage:
.. code-block:: python
import salt.utils.win_reg
winreg.delete_value(hive='HKLM', key='SOFTWARE\\SaltTest', vname='version')
'''
local_hive = _to_unicode(hive)
local_key = _to_unicode(key)
local_vname = _to_unicode(vname)
registry = Registry()
try:
hkey = registry.hkeys[local_hive]
except KeyError:
raise CommandExecutionError('Invalid Hive: {0}'.format(local_hive))
access_mask = registry.registry_32[use_32bit_registry] | win32con.KEY_ALL_ACCESS
handle = None
try:
handle = win32api.RegOpenKeyEx(hkey, local_key, 0, access_mask)
win32api.RegDeleteValue(handle, local_vname)
broadcast_change()
return True
except Exception as exc: # pylint: disable=E0602
if exc.winerror == 2:
return None
else:
log.error(exc, exc_info=True)
log.error('Hive: %s', local_hive)
log.error('Key: %s', local_key)
log.error('ValueName: %s', local_vname)
log.error('32bit Reg: %s', use_32bit_registry)
return False
finally:
if handle:
win32api.RegCloseKey(handle)