#!/usr/bin/env python3
# Copyright 2018 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from writers import template_writer
class GpoEditorWriter(template_writer.TemplateWriter):
'''Abstract class for ADM and ADMX writers.
It includes deprecated policies in its output, and places them in a dedicated
'DeprecatedPolicies' group. Every deprecated policy has the same description.
It is a superclass for AdmWriter and AdmxWriter.
'''
def IsDeprecatedPolicySupported(self, policy):
# Include deprecated policies in the output.
return True
def IsVersionSupported(self, policy, supported_on):
# Include deprecated policies in the 'DeprecatedPolicies' group, even if
# they aren't supported anymore.
major_version = self._GetChromiumMajorVersion()
if not major_version:
return True
since_version = supported_on.get('since_version', None)
return not since_version or major_version >= int(since_version)
def IsPolicyOnWin7Only(self, policy):
''' Returns true if the policy is supported on win7 only.'''
for suppported_on in policy.get('supported_on', []):
if 'win7' == suppported_on.get('platform', []):
return True
return False
def _IsRemovedPolicy(self, policy):
major_version = self._GetChromiumMajorVersion()
for supported_on in policy.get('supported_on', []):
if '*' in self.platforms or supported_on['platform'] in self.platforms:
until_version = supported_on.get('until_version', None)
if not until_version or major_version <= int(until_version):
# The policy is still supported, return False.
return False
# No platform+version combo supports this version, return True.
return True
def _FilterPolicies(self, predicate, policy_list):
filtered_policies = []
for policy in policy_list:
if policy['type'] == 'group':
for p in policy['policies']:
if predicate(p):
filtered_policies.append(p)
else:
if predicate(policy):
filtered_policies.append(policy)
return filtered_policies
def _RemovePoliciesFromList(self, policy_list, policies_to_remove):
'''Remove policies_to_remove from groups and the top-level list.'''
# We only compare the 'name' property.
policies_to_remove = set([p['name'] for p in policies_to_remove])
# Remove from top-level list.
policy_list[:] = [
p for p in policy_list if p['name'] not in policies_to_remove
]
# Remove from groups.
for group in policy_list:
if group['type'] != 'group':
continue
group['policies'] = [
p for p in group['policies'] if p['name'] not in policies_to_remove
]
# Remove empty groups.
policy_list[:] = [
p for p in policy_list if p['type'] != 'group' or p['policies']
]
def _MovePolicyGroup(self, policy_list, predicate, policy_desc, group):
'''Remove policies from |policy_list| that satisfy |predicate| and add them
to |group|.'''
filtered_policies = self._FilterPolicies(predicate, policy_list)
self._RemovePoliciesFromList(policy_list, filtered_policies)
for p in filtered_policies:
p['desc'] = policy_desc
group['policies'] = filtered_policies
def PreprocessPolicies(self, policy_list):
'''Put policies under the DeprecatedPolicies/RemovedPolicies groups.'''
removed_policies_group = {
'name': 'RemovedPolicies',
'type': 'group',
'caption': self.messages['removed_policy_group_caption']['text'],
'desc': self.messages['removed_policy_group_desc']['text'],
'policies': []
}
self._MovePolicyGroup(
policy_list,
lambda p: self._IsRemovedPolicy(p),
self.messages['removed_policy_desc']['text'],
removed_policies_group)
deprecated_policies_group = {
'name': 'DeprecatedPolicies',
'type': 'group',
'caption': self.messages['deprecated_policy_group_caption']['text'],
'desc': self.messages['deprecated_policy_group_desc']['text'],
'policies': []
}
self._MovePolicyGroup(
policy_list,
lambda p: p.get('deprecated', False),
self.messages['deprecated_policy_desc']['text'],
deprecated_policies_group)
policy_list.append(deprecated_policies_group)
policy_list.append(removed_policies_group)
return super(GpoEditorWriter, self).SortPoliciesGroupsFirst(policy_list)
Codebase Browser
chromium