1 //
2 // Copyright (C) 2016 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #include "update_engine/daemon_state_android.h"
18 
19 #include <base/logging.h>
20 
21 #include "update_engine/common/boot_control.h"
22 #include "update_engine/common/boot_control_stub.h"
23 #include "update_engine/common/hardware.h"
24 #include "update_engine/common/prefs.h"
25 #include "update_engine/update_attempter_android.h"
26 
27 namespace chromeos_update_engine {
28 
29 bool DaemonStateAndroid::Initialize() {
30   boot_control_ = boot_control::CreateBootControl();
31   if (!boot_control_) {
32     LOG(WARNING) << "Unable to create BootControl instance, using stub "
33                  << "instead. All update attempts will fail.";
34     boot_control_.reset(new BootControlStub());
35   }
36 
37   hardware_ = hardware::CreateHardware();
38   if (!hardware_) {
39     LOG(ERROR) << "Error initializing the HardwareInterface.";
40     return false;
41   }
42 
43   LOG_IF(INFO, !hardware_->IsNormalBootMode()) << "Booted in dev mode.";
44   LOG_IF(INFO, !hardware_->IsOfficialBuild()) << "Booted non-official build.";
45 
46   // Initialize prefs.
47   base::FilePath non_volatile_path;
48   // TODO(deymo): Fall back to in-memory prefs if there's no physical directory
49   // available.
50   if (!hardware_->GetNonVolatileDirectory(&non_volatile_path)) {
51     LOG(ERROR) << "Failed to get a non-volatile directory.";
52     return false;
53   }
54   Prefs* prefs = new Prefs();
55   prefs_.reset(prefs);
56   if (!prefs->Init(non_volatile_path.Append(kPrefsSubDirectory))) {
57     LOG(ERROR) << "Failed to initialize preferences.";
58     return false;
59   }
60 
61   // The CertificateChecker singleton is used by the update attempter.
62   certificate_checker_.reset(
63       new CertificateChecker(prefs_.get(), &openssl_wrapper_));
64   certificate_checker_->Init();
65 
66   // Initialize the UpdateAttempter before the UpdateManager.
67   update_attempter_.reset(new UpdateAttempterAndroid(
68       this, prefs_.get(), boot_control_.get(), hardware_.get()));
69 
70   return true;
71 }
72 
73 bool DaemonStateAndroid::StartUpdater() {
74   // The DaemonState in Android is a passive daemon. It will only start applying
75   // an update when instructed to do so from the exposed binder API.
76   update_attempter_->Init();
77   return true;
78 }
79 
80 void DaemonStateAndroid::AddObserver(ServiceObserverInterface* observer) {
81   service_observers_.insert(observer);
82 }
83 
84 void DaemonStateAndroid::RemoveObserver(ServiceObserverInterface* observer) {
85   service_observers_.erase(observer);
86 }
87 
88 ServiceDelegateAndroidInterface* DaemonStateAndroid::service_delegate() {
89   return update_attempter_.get();
90 }
91 
92 }  // namespace chromeos_update_engine
93