blob: daeb6affd1471f3ed9e3babfbce5b704d4f243b3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "package_manager_remote.h"
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <chrono>
#include <thread>
namespace iorap::binder {
const constexpr int64_t kTimeoutMs = 60 * 1000; // 1 min
const constexpr int64_t kIntervalMs = 1000; // 1 sec
std::shared_ptr<PackageManagerRemote> PackageManagerRemote::Create() {
std::shared_ptr<PackageManagerRemote> package_manager =
std::make_shared<PackageManagerRemote>();
if (package_manager->ReconnectWithTimeout(kTimeoutMs)) {
return package_manager;
}
return nullptr;
}
android::sp<IPackageManager> PackageManagerRemote::GetPackageService() {
android::sp<android::IBinder> binder = android::defaultServiceManager()->getService(
android::String16{"package_native"});
if (binder == nullptr) {
LOG(ERROR) << "Cannot get package manager service!";
return nullptr;
}
return android::interface_cast<IPackageManager>(binder);
}
std::optional<int64_t> PackageManagerRemote::GetPackageVersion(
const std::string& package_name) {
int64_t version_code;
android::binder::Status status = InvokeRemote(
[this, &version_code, &package_name]() {
return package_service_->getVersionCodeForPackage(
android::String16(package_name.c_str()), /*out*/&version_code);
});
if (status.isOk()) {
return version_code;
} else {
LOG(WARNING) << "Failed to get version: "
<< status.toString8().c_str()
<< " for " << package_name
<< ". Retry to connect package manager service.";
return std::nullopt;
}
}
std::optional<VersionMap> PackageManagerRemote::GetPackageVersionMap() {
VersionMap package_version_map;
std::optional<std::vector<std::string>> packages = GetAllPackages();
if (!packages) {
LOG(DEBUG) << "Failed to get all packages. The package manager may be down.";
return std::nullopt;
}
LOG(DEBUG) << "PackageManagerRemote::GetPackageVersionMap: "
<< packages->size()
<< " packages are found.";
for (const std::string& package : *packages) {
std::optional<int64_t> version = GetPackageVersion(package);
if (!version) {
LOG(DEBUG) << "Cannot get version for " << package
<< "Package manager may be down";
return std::nullopt;
}
package_version_map[package] = *version;
}
return package_version_map;
}
std::optional<std::vector<std::string>> PackageManagerRemote::GetAllPackages() {
std::vector<std::string> packages;
android::binder::Status status = InvokeRemote(
[this, &packages]() {
return package_service_->getAllPackages(/*out*/&packages);
});
if (status.isOk()) {
return packages;
}
LOG(ERROR) << "Failed to get all packages: " << status.toString8().c_str();
return std::nullopt;
}
bool PackageManagerRemote::ReconnectWithTimeout(int64_t timeout_ms) {
int64_t count = 0;
package_service_ = nullptr;
std::chrono::duration interval = std::chrono::milliseconds(1000);
std::chrono::duration timeout = std::chrono::milliseconds(timeout_ms);
while (package_service_ == nullptr) {
LOG(WARNING) << "Reconnect to package manager service: " << ++count << " times";
package_service_ = GetPackageService();
std::this_thread::sleep_for(interval);
if (count * interval >= timeout) {
LOG(FATAL) << "Fail to create version map in "
<< timeout.count()
<< " milliseconds."
<< " Reason: Failed to connect to package manager service."
<< " Is system_server down?";
return false;
}
}
return true;
}
template <typename T>
android::binder::Status PackageManagerRemote::InvokeRemote(T&& lambda) {
android::binder::Status status =
static_cast<android::binder::Status>(lambda());
if (status.isOk()) {
return status;
}
if (!ReconnectWithTimeout(kTimeoutMs)) {
return status;
}
return lambda();
}
void PackageManagerRemote::RegisterPackageChangeObserver(
android::sp<PackageChangeObserver> observer) {
LOG(DEBUG) << "Register package change observer.";
android::binder::Status status = InvokeRemote(
[this, &observer]() {
return package_service_->registerPackageChangeObserver(observer);
});
if (!status.isOk()) {
LOG(FATAL) << "Cannot register package change observer.";
}
}
void PackageManagerRemote::UnregisterPackageChangeObserver(
android::sp<PackageChangeObserver> observer) {
LOG(DEBUG) << "Unregister package change observer.";
android::binder::Status status = InvokeRemote(
[this, &observer]() {
return package_service_->unregisterPackageChangeObserver(observer);
});
if (!status.isOk()) {
LOG(WARNING) << "Cannot unregister package change observer.";
}
}
void PackageManagerRemote::RegisterPackageManagerDeathRecipient(
android::sp<PackageManagerDeathRecipient> death_recipient) {
LOG(DEBUG) << "Register package manager death recipient.";
android::status_t status =
android::IInterface::asBinder(package_service_.get())->linkToDeath(death_recipient);
if (status == android::OK) {
return;
}
if (!ReconnectWithTimeout(kTimeoutMs) ||
android::OK != android::IInterface::asBinder(
package_service_.get())->linkToDeath(death_recipient)) {
LOG(FATAL) << "Failed to register package manager death recipient.";
}
}
void PackageManagerDeathRecipient::binderDied(const android::wp<android::IBinder>& /* who */) {
LOG(DEBUG) << "PackageManagerDeathRecipient::binderDied try to re-register";
package_manager_->RegisterPackageChangeObserver(observer_);
package_manager_->
RegisterPackageManagerDeathRecipient(this);
}
} // namespace iorap::package_manager
|
