chrome/browser/chromeos/login/easy_unlock/short_lived_user_context.cc

   1 // Copyright 2014 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/login/easy_unlock/short_lived_user_context.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/task_runner.h"
  10 #include "chrome/common/extensions/extension_constants.h"
  11 #include "chromeos/login/auth/user_context.h"
  12
  13 namespace chromeos {
  14
  15 namespace {
  16
  17 // The number of minutes that the user context will be stored.
  18 const int64 kUserContextTimeToLiveMinutes = 10;
  19
  20 }  // namespace
  21
  22 ShortLivedUserContext::ShortLivedUserContext(
  23     const UserContext& user_context,
  24     apps::AppLifetimeMonitor* app_lifetime_monitor,
  25     base::TaskRunner* task_runner)
  26     : user_context_(new UserContext(user_context)),
  27       app_lifetime_monitor_(app_lifetime_monitor),
  28       weak_ptr_factory_(this) {
  29   app_lifetime_monitor_->AddObserver(this);
  30
  31   task_runner->PostDelayedTask(
  32       FROM_HERE,
  33       base::Bind(&ShortLivedUserContext::Reset, weak_ptr_factory_.GetWeakPtr()),
  34       base::TimeDelta::FromMinutes(kUserContextTimeToLiveMinutes));
  35 }
  36
  37 ShortLivedUserContext::~ShortLivedUserContext() {
  38   Reset();
  39 }
  40
  41 void ShortLivedUserContext::Reset() {
  42   if (user_context_.get()) {
  43     user_context_->ClearSecrets();
  44     user_context_.reset();
  45     app_lifetime_monitor_->RemoveObserver(this);
  46   }
  47 }
  48
  49 void ShortLivedUserContext::OnAppDeactivated(Profile* profile,
  50                                              const std::string& app_id) {
  51   if (app_id == extension_misc::kEasyUnlockAppId)
  52     Reset();
  53 }
  54
  55 }  // namespace chromeos