Chromium applier implementation added

gpoa/frontend/chromium_applier.py

@@ -0,0 +1,42 @@
+from .applier_frontend import applier_frontend
+
+import logging
+import json
+import os
+
+class chromium_applier(applier_frontend):
+    __registry_branch = 'Software\\Policies\\Chromium'
+    __managed_policies_path = '/etc/chromium/policies/managed'
+    __recommended_policies_path = '/etc/chromium/policies/recommended'
+
+    def __init__(self, storage):
+        self.storage = storage
+        self.policies = dict()
+
+    def get_hklm_string_entry(self, hive_subkey):
+        query_str = '{}\\{}'.format(self.__registry_branch, hive_subkey)
+        return self.storage.get_hklm_entry(query_str)
+
+    def get_hklm_string_entry_default(self, hive_subkey, default):
+        defval = str(default)
+        response = self.get_hklm_string_entry(hive_subkey)
+        if response:
+            return response.data
+        return defval
+
+    def set_policy(self, name, obj):
+        self.policies[name] = obj
+        logging.info('Chromium policy \'{}\' set to {}'.format(name, obj))
+
+    def get_home_page(self):
+        return self.get_hklm_string_entry_default('HomepageLocation', 'about:blank')
+
+    def apply(self):
+        self.set_policy('HomepageLocation', self.get_home_page())
+
+        destfile = os.path.join(self.__managed_policies_path, 'policies.json')
+
+        with open(destfile, 'w') as f:
+            json.dump(self.policies, f)
+            logging.info('Wrote Chromium preferences to {}'.format(destfile))
+