NTP applier stub added

gpoa/frontend/ntp_applier.py

@@ -0,0 +1,68 @@
+#
+# GPOA - GPO Applier for Linux
+#
+# Copyright (C) 2019-2020 BaseALT Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import logging
+from enum import Enum
+
+
+from util.logging import slogm
+
+
+class NTPServerType(Enum):
+    NTP = 'NTP'
+
+
+class ntp_applier:
+    __module_name = 'NTPApplier'
+    __module_experimental = True
+    __module_enabled = False
+
+    __ntp_branch = 'Software\\Policies\\Microsoft\\W32time\\Parameters'
+    __ntp_client_branch = 'Software\\Policies\\Microsoft\\W32time\\TimeProviders\\NtpClient'
+    __ntp_server_branch = 'Software\\Policies\\Microsoft\\W32time\\TimeProviders\\NtpServer'
+
+    __ntp_key_address = 'NtpServer'
+    __ntp_key_type = 'Type'
+    __ntp_key_client_enabled = 'Enabled'
+    __ntp_key_server_enabled = 'Enabled'
+
+    def __init__(self, storage, sid, username):
+        self.storage = storage
+        self.sid = sid
+        self.username = username
+
+        self.ntp_server_address_key = '{}\\{}'.format(self.__ntp_branch, self.__ntp_key_address)
+        self.ntp_server_type = '{}\\{}'.format(self.__ntp_branch, self.__ntp_key_type)
+        self.ntp_client_enabled = '{}\\{}'.format(self.__ntp_client_branch, self.__ntp_key_client_enabled)
+        self.ntp_server_enabled = '{}\\{}'.format(self.__ntp_server_branch, self.__ntp_key_server_enabled)
+
+    def run(self):
+        server_type = self.storage.get_hklm_key(self.ntp_server_type)
+        if NTPServerType.NTP.value != server_type:
+            logging.warning(slogm('Unsupported NTP server type: {}'.format(server_type)))
+        else:
+            logging.debug(slogm('Configuring NTP server...'))
+
+    def apply(self):
+        if self.__module_enabled:
+            logging.debug(slogm('Running NTP applier for machine'))
+            self.run()
+        else:
+            logging.debug(slogm('NTP applier for machine will not be started'))
+