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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/policy/core/browser/configuration_policy_handler_list.h"
#include "base/bind.h"
#include "base/logging.h"
#include "components/policy/core/browser/configuration_policy_handler.h"
#include "components/policy/core/browser/configuration_policy_handler_parameters.h"
#include "components/policy/core/browser/policy_error_map.h"
#include "components/policy/core/common/values_util.h"
#include "components/policy/policy_constants.h"
#include "components/prefs/pref_value_map.h"
#include "components/strings/grit/components_strings.h"
namespace policy {
namespace {
// Don't show errors for policies starting with that prefix.
const char kPolicyCommentPrefix[] = "_comment";
} // namespace
ConfigurationPolicyHandlerList::ConfigurationPolicyHandlerList(
const PopulatePolicyHandlerParametersCallback& parameters_callback,
const GetChromePolicyDetailsCallback& details_callback,
bool allow_future_policies)
: parameters_callback_(parameters_callback),
details_callback_(details_callback),
allow_future_policies_(allow_future_policies) {}
ConfigurationPolicyHandlerList::~ConfigurationPolicyHandlerList() {
}
void ConfigurationPolicyHandlerList::AddHandler(
std::unique_ptr<ConfigurationPolicyHandler> handler) {
handlers_.push_back(std::move(handler));
}
void ConfigurationPolicyHandlerList::ApplyPolicySettings(
const PolicyMap& policies,
PrefValueMap* prefs,
PolicyErrorMap* errors,
PoliciesSet* deprecated_policies,
PoliciesSet* future_policies) const {
if (deprecated_policies)
deprecated_policies->clear();
if (future_policies)
future_policies->clear();
// This function is used both to apply the policy settings, and to check them
// and list errors. As such it must get all the errors even if it isn't
// applying the policies.
PolicyMap filtered_policies = policies.Clone();
base::flat_set<std::string> enabled_future_policies =
allow_future_policies_
? base::flat_set<std::string>()
: ValueToStringSet(policies.GetValue(key::kEnableExperimentalPolicies,
base::Value::Type::LIST));
filtered_policies.EraseMatching(base::BindRepeating(
&ConfigurationPolicyHandlerList::FilterOutUnsupportedPolicies,
base::Unretained(this), enabled_future_policies, future_policies));
PolicyErrorMap scoped_errors;
if (!errors)
errors = &scoped_errors;
PolicyHandlerParameters parameters;
if (parameters_callback_)
parameters_callback_.Run(¶meters);
for (const auto& handler : handlers_) {
if (handler->CheckPolicySettings(filtered_policies, errors) && prefs) {
handler->ApplyPolicySettingsWithParameters(filtered_policies, parameters,
prefs);
}
}
if (details_callback_ && deprecated_policies) {
for (const auto& key_value : filtered_policies) {
const PolicyDetails* details = details_callback_.Run(key_value.first);
if (details && details->is_deprecated)
deprecated_policies->insert(key_value.first);
}
}
}
void ConfigurationPolicyHandlerList::PrepareForDisplaying(
PolicyMap* policies) const {
for (const auto& handler : handlers_)
handler->PrepareForDisplaying(policies);
}
bool ConfigurationPolicyHandlerList::FilterOutUnsupportedPolicies(
const base::flat_set<std::string>& enabled_future_policies,
PoliciesSet* future_policies,
const PolicyMap::const_iterator iter) const {
// Callback might be missing in tests.
if (!details_callback_) {
return false;
}
const PolicyDetails* policy_details = details_callback_.Run(iter->first);
if (!policy_details) {
const std::string prefix(kPolicyCommentPrefix);
if (iter->first.compare(0, prefix.length(), prefix) != 0) {
DVLOG(1) << "Unknown policy: " << iter->first;
}
return false;
}
if (IsFuturePolicy(enabled_future_policies, *policy_details, iter)) {
if (future_policies)
future_policies->insert(iter->first);
return true;
}
return IsPlatformDevicePolicy(*policy_details, iter);
}
bool ConfigurationPolicyHandlerList::IsPlatformDevicePolicy(
const PolicyDetails& policy_details,
const PolicyMap::const_iterator iter) const {
if (iter->second.source == POLICY_SOURCE_PLATFORM &&
policy_details.is_device_policy) {
// Device Policy is only implemented as Cloud Policy (not Platform Policy).
LOG(WARNING) << "Ignoring device platform policy: " << iter->first;
return true;
}
return false;
}
bool ConfigurationPolicyHandlerList::IsFuturePolicy(
const base::flat_set<std::string>& enabled_future_policies,
const PolicyDetails& policy_details,
const PolicyMap::const_iterator iter) const {
return !allow_future_policies_ && policy_details.is_future &&
!enabled_future_policies.contains(iter->first);
}
} // namespace policy
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