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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/user_cloud_policy_manager.h"
#include <string>
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "chrome/browser/policy/cloud_policy_refresh_scheduler.h"
#include "chrome/browser/policy/cloud_policy_service.h"
#include "chrome/browser/policy/policy_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/policy/user_cloud_policy_store_chromeos.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/session_manager_client.h"
#endif
namespace policy {
namespace {
#if defined(OS_CHROMEOS)
// Paths for the legacy policy caches in the profile directory.
// TODO(mnissler): Remove once the number of pre-M20 clients becomes negligible.
// Subdirectory in the user's profile for storing user policies.
const FilePath::CharType kPolicyDir[] = FILE_PATH_LITERAL("Device Management");
// File in the above directory for stroing user policy dmtokens.
const FilePath::CharType kTokenCacheFile[] = FILE_PATH_LITERAL("Token");
// File in the above directory for storing user policy data.
const FilePath::CharType kPolicyCacheFile[] = FILE_PATH_LITERAL("Policy");
#endif
} // namespace
UserCloudPolicyManager::UserCloudPolicyManager(
scoped_ptr<CloudPolicyStore> store,
bool wait_for_policy_fetch)
: wait_for_policy_fetch_(wait_for_policy_fetch),
wait_for_policy_refresh_(false),
store_(store.Pass()) {
store_->Load();
store_->AddObserver(this);
}
UserCloudPolicyManager::~UserCloudPolicyManager() {
Shutdown();
store_->RemoveObserver(this);
}
#if defined(OS_CHROMEOS)
// static
scoped_ptr<UserCloudPolicyManager> UserCloudPolicyManager::Create(
bool wait_for_policy_fetch) {
FilePath profile_dir;
CHECK(PathService::Get(chrome::DIR_USER_DATA, &profile_dir));
CommandLine* command_line = CommandLine::ForCurrentProcess();
const FilePath policy_dir =
profile_dir
.Append(command_line->GetSwitchValuePath(switches::kLoginProfile))
.Append(kPolicyDir);
const FilePath policy_cache_file = policy_dir.Append(kPolicyCacheFile);
const FilePath token_cache_file = policy_dir.Append(kTokenCacheFile);
scoped_ptr<CloudPolicyStore> store(
new UserCloudPolicyStoreChromeOS(
chromeos::DBusThreadManager::Get()->GetSessionManagerClient(),
token_cache_file, policy_cache_file));
return scoped_ptr<UserCloudPolicyManager>(
new UserCloudPolicyManager(store.Pass(), wait_for_policy_fetch));
}
#endif
void UserCloudPolicyManager::Initialize(PrefService* prefs,
DeviceManagementService* service,
UserAffiliation user_affiliation) {
DCHECK(!service_.get());
prefs_ = prefs;
scoped_ptr<CloudPolicyClient> client(
new CloudPolicyClient(std::string(), std::string(), user_affiliation,
POLICY_SCOPE_USER, NULL, service));
service_.reset(new CloudPolicyService(client.Pass(), store_.get()));
service_->client()->AddObserver(this);
if (wait_for_policy_fetch_) {
// If we are supposed to wait for a policy fetch, we trigger an explicit
// policy refresh at startup that allows us to unblock initialization once
// done. The refresh scheduler only gets started once that refresh
// completes. Note that we might have to wait for registration to happen,
// see OnRegistrationStateChanged() below.
if (service_->client()->is_registered()) {
service_->RefreshPolicy(
base::Bind(&UserCloudPolicyManager::OnInitialPolicyFetchComplete,
base::Unretained(this)));
}
} else {
CancelWaitForPolicyFetch();
}
}
void UserCloudPolicyManager::Shutdown() {
refresh_scheduler_.reset();
if (service_.get())
service_->client()->RemoveObserver(this);
service_.reset();
prefs_ = NULL;
}
void UserCloudPolicyManager::CancelWaitForPolicyFetch() {
wait_for_policy_fetch_ = false;
CheckAndPublishPolicy();
// Now that |wait_for_policy_fetch_| is guaranteed to be false, the scheduler
// can be started.
if (service_.get() && !refresh_scheduler_.get() && prefs_) {
refresh_scheduler_.reset(
new CloudPolicyRefreshScheduler(
service_->client(), store_.get(), prefs_,
prefs::kUserPolicyRefreshRate,
MessageLoop::current()->message_loop_proxy()));
}
}
bool UserCloudPolicyManager::IsInitializationComplete() const {
return store_->is_initialized() && !wait_for_policy_fetch_;
}
void UserCloudPolicyManager::RefreshPolicies() {
if (service_.get()) {
wait_for_policy_refresh_ = true;
service_->RefreshPolicy(
base::Bind(&UserCloudPolicyManager::OnRefreshComplete,
base::Unretained(this)));
} else {
OnRefreshComplete();
}
}
void UserCloudPolicyManager::OnPolicyFetched(CloudPolicyClient* client) {
// No action required. If we're blocked on a policy fetch, we'll learn about
// completion of it through OnInitialPolicyFetchComplete().
}
void UserCloudPolicyManager::OnRegistrationStateChanged(
CloudPolicyClient* client) {
if (wait_for_policy_fetch_) {
// If we're blocked on the policy fetch, now is a good time to issue it.
if (service_->client()->is_registered()) {
service_->RefreshPolicy(
base::Bind(&UserCloudPolicyManager::OnInitialPolicyFetchComplete,
base::Unretained(this)));
} else {
// If the client has switched to not registered, we bail out as this
// indicates the cloud policy setup flow has been aborted.
CancelWaitForPolicyFetch();
}
}
}
void UserCloudPolicyManager::OnClientError(CloudPolicyClient* client) {
CancelWaitForPolicyFetch();
}
void UserCloudPolicyManager::CheckAndPublishPolicy() {
if (IsInitializationComplete() && !wait_for_policy_refresh_) {
scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
bundle->Get(POLICY_DOMAIN_CHROME, std::string()).CopyFrom(
store_->policy_map());
UpdatePolicy(bundle.Pass());
}
}
void UserCloudPolicyManager::OnStoreLoaded(CloudPolicyStore* store) {
CheckAndPublishPolicy();
}
void UserCloudPolicyManager::OnStoreError(CloudPolicyStore* store) {
// No action required, the old policy is still valid.
}
void UserCloudPolicyManager::OnInitialPolicyFetchComplete() {
CancelWaitForPolicyFetch();
}
void UserCloudPolicyManager::OnRefreshComplete() {
wait_for_policy_refresh_ = false;
CheckAndPublishPolicy();
}
} // namespace policy
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