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 auto binder_wrapper = android::BinderWrapper::Get();
67 binder_wrapper->RegisterForDeathNotifications(
68 IUpdateEngineCallback::asBinder(callback),
69 base::Bind(&BinderUpdateEngineAndroidService::UnbindCallback,
70 base::Unretained(this),
71 base::Unretained(callback.get())));
72
73 // Send an status update on connection (except when no update sent so far),
74 // since the status update is oneway and we don't need to wait for the
75 // response.
76 if (last_status_ != -1)
77 callback->onStatusUpdate(last_status_, last_progress_);
78
79 *return_value = true;
80 return Status::ok();
81 }
82
applyPayload(const android::String16 & url,int64_t payload_offset,int64_t payload_size,const std::vector<android::String16> & header_kv_pairs)83 Status BinderUpdateEngineAndroidService::applyPayload(
84 const android::String16& url,
85 int64_t payload_offset,
86 int64_t payload_size,
87 const std::vector<android::String16>& header_kv_pairs) {
88 const std::string payload_url{android::String8{url}.string()};
89 std::vector<std::string> str_headers;
90 str_headers.reserve(header_kv_pairs.size());
91 for (const auto& header : header_kv_pairs) {
92 str_headers.emplace_back(android::String8{header}.string());
93 }
94
95 brillo::ErrorPtr error;
96 if (!service_delegate_->ApplyPayload(
97 payload_url, payload_offset, payload_size, str_headers, &error)) {
98 return ErrorPtrToStatus(error);
99 }
100 return Status::ok();
101 }
102
suspend()103 Status BinderUpdateEngineAndroidService::suspend() {
104 brillo::ErrorPtr error;
105 if (!service_delegate_->SuspendUpdate(&error))
106 return ErrorPtrToStatus(error);
107 return Status::ok();
108 }
109
resume()110 Status BinderUpdateEngineAndroidService::resume() {
111 brillo::ErrorPtr error;
112 if (!service_delegate_->ResumeUpdate(&error))
113 return ErrorPtrToStatus(error);
114 return Status::ok();
115 }
116
cancel()117 Status BinderUpdateEngineAndroidService::cancel() {
118 brillo::ErrorPtr error;
119 if (!service_delegate_->CancelUpdate(&error))
120 return ErrorPtrToStatus(error);
121 return Status::ok();
122 }
123
resetStatus()124 Status BinderUpdateEngineAndroidService::resetStatus() {
125 brillo::ErrorPtr error;
126 if (!service_delegate_->ResetStatus(&error))
127 return ErrorPtrToStatus(error);
128 return Status::ok();
129 }
130
UnbindCallback(IUpdateEngineCallback * callback)131 void BinderUpdateEngineAndroidService::UnbindCallback(
132 IUpdateEngineCallback* callback) {
133 auto it =
134 std::find_if(callbacks_.begin(),
135 callbacks_.end(),
136 [&callback](const android::sp<IUpdateEngineCallback>& elem) {
137 return elem.get() == callback;
138 });
139 if (it == callbacks_.end()) {
140 LOG(ERROR) << "Got death notification for unknown callback.";
141 return;
142 }
143 callbacks_.erase(it);
144 }
145
146 } // namespace chromeos_update_engine
147