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.
5 #include "chrome/browser/chromeos/app_mode/kiosk_profile_loader.h"
7 #include "base/logging.h"
8 #include "base/memory/weak_ptr.h"
9 #include "base/message_loop/message_loop.h"
10 #include "base/strings/string_util.h"
11 #include "base/sys_info.h"
12 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
13 #include "chrome/browser/chromeos/login/demo_mode/demo_app_launcher.h"
14 #include "chrome/browser/chromeos/login/login_utils.h"
15 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
16 #include "chrome/browser/chromeos/settings/cros_settings.h"
17 #include "chrome/browser/lifetime/application_lifetime.h"
18 #include "chromeos/cryptohome/async_method_caller.h"
19 #include "chromeos/dbus/cryptohome_client.h"
20 #include "chromeos/dbus/dbus_thread_manager.h"
21 #include "chromeos/login/auth/auth_status_consumer.h"
22 #include "chromeos/login/auth/user_context.h"
23 #include "chromeos/login/user_names.h"
24 #include "content/public/browser/browser_thread.h"
25 #include "google_apis/gaia/gaia_auth_util.h"
27 using content::BrowserThread;
33 KioskAppLaunchError::Error LoginFailureToKioskAppLaunchError(
34 const AuthFailure& error) {
35 switch (error.reason()) {
36 case AuthFailure::COULD_NOT_MOUNT_TMPFS:
37 case AuthFailure::COULD_NOT_MOUNT_CRYPTOHOME:
38 return KioskAppLaunchError::UNABLE_TO_MOUNT;
39 case AuthFailure::DATA_REMOVAL_FAILED:
40 return KioskAppLaunchError::UNABLE_TO_REMOVE;
41 case AuthFailure::USERNAME_HASH_FAILED:
42 return KioskAppLaunchError::UNABLE_TO_RETRIEVE_HASH;
45 return KioskAppLaunchError::UNABLE_TO_MOUNT;
51 ////////////////////////////////////////////////////////////////////////////////
52 // KioskProfileLoader::CryptohomedChecker ensures cryptohome daemon is up
53 // and running by issuing an IsMounted call. If the call does not go through
54 // and chromeos::DBUS_METHOD_CALL_SUCCESS is not returned, it will retry after
55 // some time out and at the maximum five times before it gives up. Upon
56 // success, it resumes the launch by logging in as a kiosk mode account.
58 class KioskProfileLoader::CryptohomedChecker
59 : public base::SupportsWeakPtr<CryptohomedChecker> {
61 explicit CryptohomedChecker(KioskProfileLoader* loader)
65 ~CryptohomedChecker() {}
68 chromeos::DBusThreadManager::Get()->GetCryptohomeClient()->IsMounted(
69 base::Bind(&CryptohomedChecker::OnCryptohomeIsMounted,
74 void OnCryptohomeIsMounted(chromeos::DBusMethodCallStatus call_status,
76 if (call_status != chromeos::DBUS_METHOD_CALL_SUCCESS) {
77 const int kMaxRetryTimes = 5;
79 if (retry_count_ > kMaxRetryTimes) {
80 LOG(ERROR) << "Could not talk to cryptohomed for launching kiosk app.";
81 ReportCheckResult(KioskAppLaunchError::CRYPTOHOMED_NOT_RUNNING);
85 const int retry_delay_in_milliseconds = 500 * (1 << retry_count_);
86 base::MessageLoop::current()->PostDelayedTask(
88 base::Bind(&CryptohomedChecker::StartCheck, AsWeakPtr()),
89 base::TimeDelta::FromMilliseconds(retry_delay_in_milliseconds));
94 LOG(ERROR) << "Cryptohome is mounted before launching kiosk app.";
96 // Proceed only when cryptohome is not mounded or running on dev box.
97 if (!is_mounted || !base::SysInfo::IsRunningOnChromeOS())
98 ReportCheckResult(KioskAppLaunchError::NONE);
100 ReportCheckResult(KioskAppLaunchError::ALREADY_MOUNTED);
103 void ReportCheckResult(KioskAppLaunchError::Error error) {
104 if (error == KioskAppLaunchError::NONE)
105 loader_->LoginAsKioskAccount();
107 loader_->ReportLaunchResult(error);
110 KioskProfileLoader* loader_;
113 DISALLOW_COPY_AND_ASSIGN(CryptohomedChecker);
117 ////////////////////////////////////////////////////////////////////////////////
118 // KioskProfileLoader
120 KioskProfileLoader::KioskProfileLoader(const std::string& app_user_id,
121 bool use_guest_mount,
123 : user_id_(app_user_id),
124 use_guest_mount_(use_guest_mount),
125 delegate_(delegate) {}
127 KioskProfileLoader::~KioskProfileLoader() {}
129 void KioskProfileLoader::Start() {
130 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
131 login_performer_.reset();
132 cryptohomed_checker_.reset(new CryptohomedChecker(this));
133 cryptohomed_checker_->StartCheck();
136 void KioskProfileLoader::LoginAsKioskAccount() {
137 login_performer_.reset(new LoginPerformer(this));
138 login_performer_->LoginAsKioskAccount(user_id_, use_guest_mount_);
141 void KioskProfileLoader::ReportLaunchResult(KioskAppLaunchError::Error error) {
142 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
144 if (error != KioskAppLaunchError::NONE) {
145 delegate_->OnProfileLoadFailed(error);
149 void KioskProfileLoader::OnAuthSuccess(const UserContext& user_context) {
150 // LoginPerformer will delete itself.
151 login_performer_->set_delegate(NULL);
152 ignore_result(login_performer_.release());
154 // If we are launching a demo session, we need to start MountGuest with the
155 // guest username; this is because there are several places in the cros code
156 // which rely on the username sent to cryptohome to be $guest. Back in Chrome
157 // we switch this back to the demo user name to correctly identify this
158 // user as a demo user.
159 UserContext context = user_context;
160 if (context.GetUserID() == chromeos::login::kGuestUserName)
161 context.SetUserID(DemoAppLauncher::kDemoUserName);
162 LoginUtils::Get()->PrepareProfile(context,
163 false, // has_auth_cookies
164 false, // has_active_session
168 void KioskProfileLoader::OnAuthFailure(const AuthFailure& error) {
169 ReportLaunchResult(LoginFailureToKioskAppLaunchError(error));
172 void KioskProfileLoader::WhiteListCheckFailed(const std::string& email) {
176 void KioskProfileLoader::PolicyLoadFailed() {
177 ReportLaunchResult(KioskAppLaunchError::POLICY_LOAD_FAILED);
180 void KioskProfileLoader::OnOnlineChecked(
181 const std::string& email, bool success) {
185 void KioskProfileLoader::OnProfilePrepared(Profile* profile) {
186 // This object could be deleted any time after successfully reporting
187 // a profile load, so invalidate the LoginUtils delegate now.
188 LoginUtils::Get()->DelegateDeleted(this);
190 delegate_->OnProfileLoaded(profile);
191 ReportLaunchResult(KioskAppLaunchError::NONE);
194 } // namespace chromeos