chrome/browser/chromeos/extensions/device_local_account_external_policy_loader.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/extensions/device_local_account_external_policy_loader.h"
   6
   7 #include "base/callback.h"
   8 #include "base/logging.h"
   9 #include "base/prefs/pref_value_map.h"
  10 #include "base/values.h"
  11 #include "chrome/browser/browser_process.h"
  12 #include "chrome/browser/extensions/policy_handlers.h"
  13 #include "chrome/common/pref_names.h"
  14 #include "components/policy/core/common/policy_map.h"
  15 #include "extensions/browser/pref_names.h"
  16 #include "net/url_request/url_request_context_getter.h"
  17
  18 namespace chromeos {
  19
  20 DeviceLocalAccountExternalPolicyLoader::
  21     DeviceLocalAccountExternalPolicyLoader(policy::CloudPolicyStore* store,
  22                                            const base::FilePath& cache_dir)
  23     : store_(store),
  24       cache_dir_(cache_dir) {
  25 }
  26
  27 bool DeviceLocalAccountExternalPolicyLoader::IsCacheRunning() const {
  28   return external_cache_;
  29 }
  30
  31 void DeviceLocalAccountExternalPolicyLoader::StartCache(
  32     const scoped_refptr<base::SequencedTaskRunner>& cache_task_runner) {
  33   DCHECK(!external_cache_);
  34   store_->AddObserver(this);
  35   external_cache_.reset(new ExternalCache(
  36       cache_dir_,
  37       g_browser_process->system_request_context(),
  38       cache_task_runner,
  39       this,
  40       true  /* always_check_updates */,
  41       false  /* wait_for_cache_initialization */));
  42
  43   if (store_->is_initialized())
  44     UpdateExtensionListFromStore();
  45 }
  46
  47 void DeviceLocalAccountExternalPolicyLoader::StopCache(
  48     const base::Closure& callback) {
  49   if (external_cache_) {
  50     external_cache_->Shutdown(callback);
  51     external_cache_.reset();
  52     store_->RemoveObserver(this);
  53   }
  54
  55   base::DictionaryValue empty_prefs;
  56   OnExtensionListsUpdated(&empty_prefs);
  57 }
  58
  59 void DeviceLocalAccountExternalPolicyLoader::StartLoading() {
  60   if (prefs_)
  61     LoadFinished();
  62 }
  63
  64 void DeviceLocalAccountExternalPolicyLoader::OnStoreLoaded(
  65     policy::CloudPolicyStore* store) {
  66   DCHECK(external_cache_);
  67   DCHECK_EQ(store_, store);
  68   UpdateExtensionListFromStore();
  69 }
  70
  71 void DeviceLocalAccountExternalPolicyLoader::OnStoreError(
  72     policy::CloudPolicyStore* store) {
  73   DCHECK(external_cache_);
  74   DCHECK_EQ(store_, store);
  75 }
  76
  77 void DeviceLocalAccountExternalPolicyLoader::OnExtensionListsUpdated(
  78     const base::DictionaryValue* prefs) {
  79   DCHECK(external_cache_ || prefs->empty());
  80   prefs_.reset(prefs->DeepCopy());
  81   LoadFinished();
  82 }
  83
  84 DeviceLocalAccountExternalPolicyLoader::
  85     ~DeviceLocalAccountExternalPolicyLoader() {
  86   DCHECK(!external_cache_);
  87 }
  88
  89 void DeviceLocalAccountExternalPolicyLoader::UpdateExtensionListFromStore() {
  90   scoped_ptr<base::DictionaryValue> prefs(new base::DictionaryValue);
  91   const policy::PolicyMap& policy_map = store_->policy_map();
  92   extensions::ExtensionInstallForcelistPolicyHandler policy_handler;
  93   if (policy_handler.CheckPolicySettings(policy_map, NULL)) {
  94     PrefValueMap pref_value_map;
  95     policy_handler.ApplyPolicySettings(policy_map, &pref_value_map);
  96     const base::Value* value = NULL;
  97     const base::DictionaryValue* dict = NULL;
  98     if (pref_value_map.GetValue(extensions::pref_names::kInstallForceList,
  99                                 &value) &&
 100         value->GetAsDictionary(&dict)) {
 101       prefs.reset(dict->DeepCopy());
 102     }
 103   }
 104
 105   external_cache_->UpdateExtensionsList(prefs.Pass());
 106 }
 107
 108 }  // namespace chromeos