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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 "chrome/browser/policy/managed_mode_policy_provider.h"
#include "base/prefs/json_pref_store.h"
#include "base/threading/sequenced_worker_pool.h"
#include "chrome/browser/policy/policy_bundle.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_constants.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace policy {
// static
const char ManagedModePolicyProvider::kPolicies[] = "policies";
// static
ManagedModePolicyProvider* ManagedModePolicyProvider::Create(Profile* profile) {
FilePath path = profile->GetPath().Append(chrome::kManagedModePolicyFilename);
JsonPrefStore* pref_store = new JsonPrefStore(
path,
JsonPrefStore::GetTaskRunnerForFile(path,
BrowserThread::GetBlockingPool()));
return new ManagedModePolicyProvider(pref_store);
}
ManagedModePolicyProvider::ManagedModePolicyProvider(
PersistentPrefStore* pref_store)
: store_(pref_store) {
store_->AddObserver(this);
store_->ReadPrefsAsync(NULL);
}
ManagedModePolicyProvider::~ManagedModePolicyProvider() {}
const base::Value* ManagedModePolicyProvider::GetPolicy(
const std::string& key) const {
base::DictionaryValue* dict = GetCachedPolicy();
base::Value* value = NULL;
// Returns NULL if the key doesn't exist.
dict->GetWithoutPathExpansion(key, &value);
return value;
}
void ManagedModePolicyProvider::SetPolicy(const std::string& key,
const base::Value* value) {
base::DictionaryValue* dict = GetCachedPolicy();
dict->SetWithoutPathExpansion(key, value->DeepCopy());
store_->ReportValueChanged(kPolicies);
UpdatePolicyFromCache();
}
void ManagedModePolicyProvider::Shutdown() {
store_->RemoveObserver(this);
ConfigurationPolicyProvider::Shutdown();
}
void ManagedModePolicyProvider::RefreshPolicies() {
UpdatePolicyFromCache();
}
bool ManagedModePolicyProvider::IsInitializationComplete() const {
return store_->IsInitializationComplete();
}
void ManagedModePolicyProvider::OnPrefValueChanged(const std::string& key) {}
void ManagedModePolicyProvider::OnInitializationCompleted(bool success) {
DCHECK(success);
UpdatePolicyFromCache();
}
base::DictionaryValue* ManagedModePolicyProvider::GetCachedPolicy() const {
base::Value* value = NULL;
base::DictionaryValue* dict = NULL;
PrefStore::ReadResult result = store_->GetMutableValue(kPolicies, &value);
switch (result) {
case PrefStore::READ_NO_VALUE: {
dict = new base::DictionaryValue;
store_->SetValue(kPolicies, dict);
break;
}
case PrefStore::READ_OK: {
bool success = value->GetAsDictionary(&dict);
DCHECK(success);
break;
}
default:
NOTREACHED();
}
return dict;
}
void ManagedModePolicyProvider::UpdatePolicyFromCache() {
scoped_ptr<PolicyBundle> policy_bundle(new PolicyBundle);
PolicyMap* policy_map =
&policy_bundle->Get(POLICY_DOMAIN_CHROME, std::string());
policy_map->LoadFrom(GetCachedPolicy(),
POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER);
UpdatePolicy(policy_bundle.Pass());
}
} // namespace policy
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