1 /*
2  * Copyright 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 <base/at_exit.h>
18 #include <base/logging.h>
19 #include <base/message_loop/message_loop.h>
20 #include <binder/IServiceManager.h>
21 #include <binder/Status.h>
22 #include <brillo/binder_watcher.h>
23 #include <brillo/message_loops/base_message_loop.h>
24 #include <brillo/syslog_logging.h>
25 #include <utils/String16.h>
26 
27 #include "android/os/BnPermissionController.h"
28 
29 namespace {
30 static android::String16 serviceName("permission");
31 }
32 
33 namespace android {
34 
35 class PermissionService : public android::os::BnPermissionController {
36    public:
checkPermission(const::android::String16 & permission,int32_t pid,int32_t uid,bool * _aidl_return)37     ::android::binder::Status checkPermission(
38             const ::android::String16& permission, int32_t pid, int32_t uid,
39             bool* _aidl_return) {
40         (void)permission;
41         (void)pid;
42         (void)uid;
43         *_aidl_return = true;
44         return binder::Status::ok();
45     }
46 
getPackagesForUid(int32_t uid,::std::vector<::android::String16> * _aidl_return)47     ::android::binder::Status getPackagesForUid(
48             int32_t uid, ::std::vector<::android::String16>* _aidl_return) {
49         (void)uid;
50         // Brillo doesn't currently have installable packages.
51         if (_aidl_return) {
52             _aidl_return->clear();
53         }
54         return binder::Status::ok();
55     }
56 
isRuntimePermission(const::android::String16 & permission,bool * _aidl_return)57     ::android::binder::Status isRuntimePermission(
58             const ::android::String16& permission, bool* _aidl_return) {
59         (void)permission;
60         // Brillo doesn't currently have runtime permissions.
61         *_aidl_return = false;
62         return binder::Status::ok();
63     }
64 };
65 
66 }  // namespace android
67 
main()68 int main() {
69     base::AtExitManager atExitManager;
70     brillo::InitLog(brillo::kLogToSyslog);
71     // Register the service with servicemanager.
72     android::status_t status = android::defaultServiceManager()->addService(
73             serviceName, new android::PermissionService());
74     CHECK(status == android::OK) << "Failed to get IPermissionController "
75                                     "binder from servicemanager.";
76 
77     // Create a message loop.
78     base::MessageLoopForIO messageLoopForIo;
79     brillo::BaseMessageLoop messageLoop{&messageLoopForIo};
80 
81     // Initialize a binder watcher.
82     brillo::BinderWatcher watcher(&messageLoop);
83     watcher.Init();
84 
85     // Run the message loop.
86     messageLoop.Run();
87 }
88