1 //
2 // Copyright (C) 2015 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/binder_service_android.h"
18
19 #include <base/bind.h>
20 #include <base/logging.h>
21 #include <binderwrapper/binder_wrapper.h>
22 #include <brillo/errors/error.h>
23 #include <utils/String8.h>
24
25 using android::binder::Status;
26 using android::os::IUpdateEngineCallback;
27
28 namespace {
ErrorPtrToStatus(const brillo::ErrorPtr & error)29 Status ErrorPtrToStatus(const brillo::ErrorPtr& error) {
30 return Status::fromServiceSpecificError(
31 1, android::String8{error->GetMessage().c_str()});
32 }
33 } // namespace
34
35 namespace chromeos_update_engine {
36
BinderUpdateEngineAndroidService(ServiceDelegateAndroidInterface * service_delegate)37 BinderUpdateEngineAndroidService::BinderUpdateEngineAndroidService(
38 ServiceDelegateAndroidInterface* service_delegate)
39 : service_delegate_(service_delegate) {
40 }
41
SendStatusUpdate(int64_t,double progress,update_engine::UpdateStatus status,const std::string &,int64_t)42 void BinderUpdateEngineAndroidService::SendStatusUpdate(
43 int64_t /* last_checked_time */,
44 double progress,
45 update_engine::UpdateStatus status,
46 const std::string& /* new_version */,
47 int64_t /* new_size */) {
48 last_status_ = static_cast<int>(status);
49 last_progress_ = progress;
50 for (auto& callback : callbacks_) {
51 callback->onStatusUpdate(last_status_, last_progress_);
52 }
53 }
54
SendPayloadApplicationComplete(ErrorCode error_code)55 void BinderUpdateEngineAndroidService::SendPayloadApplicationComplete(
56 ErrorCode error_code) {
57 for (auto& callback : callbacks_) {
58 callback->onPayloadApplicationComplete(static_cast<int>(error_code));
59 }
60 }
61
bind(const android::sp<IUpdateEngineCallback> & callback,bool * return_value)62 Status BinderUpdateEngineAndroidService::bind(
63 const android::sp<IUpdateEngineCallback>& callback, bool* return_value) {
64 callbacks_.emplace_back(callback);
65
66 const android::sp<IBinder>& callback_binder =
67 IUpdateEngineCallback::asBinder(callback);
68 auto binder_wrapper = android::BinderWrapper::Get();
69 binder_wrapper->RegisterForDeathNotifications(
70 callback_binder,
71 base::Bind(
72 base::IgnoreResult(&BinderUpdateEngineAndroidService::UnbindCallback),
73 base::Unretained(this),
74 base::Unretained(callback_binder.get())));
75
76 // Send an status update on connection (except when no update sent so far),
77 // since the status update is oneway and we don't need to wait for the
78 // response.
79 if (last_status_ != -1)
80 callback->onStatusUpdate(last_status_, last_progress_);
81
82 *return_value = true;
83 return Status::ok();
84 }
85
unbind(const android::sp<IUpdateEngineCallback> & callback,bool * return_value)86 Status BinderUpdateEngineAndroidService::unbind(
87 const android::sp<IUpdateEngineCallback>& callback, bool* return_value) {
88 const android::sp<IBinder>& callback_binder =
89 IUpdateEngineCallback::asBinder(callback);
90 auto binder_wrapper = android::BinderWrapper::Get();
91 binder_wrapper->UnregisterForDeathNotifications(callback_binder);
92
93 *return_value = UnbindCallback(callback_binder.get());
94 return Status::ok();
95 }
96
applyPayload(const android::String16 & url,int64_t payload_offset,int64_t payload_size,const std::vector<android::String16> & header_kv_pairs)97 Status BinderUpdateEngineAndroidService::applyPayload(
98 const android::String16& url,
99 int64_t payload_offset,
100 int64_t payload_size,
101 const std::vector<android::String16>& header_kv_pairs) {
102 const std::string payload_url{android::String8{url}.string()};
103 std::vector<std::string> str_headers;
104 str_headers.reserve(header_kv_pairs.size());
105 for (const auto& header : header_kv_pairs) {
106 str_headers.emplace_back(android::String8{header}.string());
107 }
108
109 brillo::ErrorPtr error;
110 if (!service_delegate_->ApplyPayload(
111 payload_url, payload_offset, payload_size, str_headers, &error)) {
112 return ErrorPtrToStatus(error);
113 }
114 return Status::ok();
115 }
116
suspend()117 Status BinderUpdateEngineAndroidService::suspend() {
118 brillo::ErrorPtr error;
119 if (!service_delegate_->SuspendUpdate(&error))
120 return ErrorPtrToStatus(error);
121 return Status::ok();
122 }
123
resume()124 Status BinderUpdateEngineAndroidService::resume() {
125 brillo::ErrorPtr error;
126 if (!service_delegate_->ResumeUpdate(&error))
127 return ErrorPtrToStatus(error);
128 return Status::ok();
129 }
130
cancel()131 Status BinderUpdateEngineAndroidService::cancel() {
132 brillo::ErrorPtr error;
133 if (!service_delegate_->CancelUpdate(&error))
134 return ErrorPtrToStatus(error);
135 return Status::ok();
136 }
137
resetStatus()138 Status BinderUpdateEngineAndroidService::resetStatus() {
139 brillo::ErrorPtr error;
140 if (!service_delegate_->ResetStatus(&error))
141 return ErrorPtrToStatus(error);
142 return Status::ok();
143 }
144
UnbindCallback(const IBinder * callback)145 bool BinderUpdateEngineAndroidService::UnbindCallback(const IBinder* callback) {
146 auto it = std::find_if(
147 callbacks_.begin(),
148 callbacks_.end(),
149 [&callback](const android::sp<IUpdateEngineCallback>& elem) {
150 return IUpdateEngineCallback::asBinder(elem).get() == callback;
151 });
152 if (it == callbacks_.end()) {
153 LOG(ERROR) << "Unable to unbind unknown callback.";
154 return false;
155 }
156 callbacks_.erase(it);
157 return true;
158 }
159
160 } // namespace chromeos_update_engine
161