1/* 2 * Copyright (C) 2018 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 <mutex> 18#include <binder/PermissionController.h> 19#include <binder/Binder.h> 20#include <binder/IServiceManager.h> 21 22#include <utils/SystemClock.h> 23 24namespace android { 25 26PermissionController::PermissionController() 27{ 28} 29 30sp<IPermissionController> PermissionController::getService() 31{ 32 std::lock_guard<Mutex> scoped_lock(mLock); 33 int64_t startTime = 0; 34 sp<IPermissionController> service = mService; 35 while (service == nullptr || !IInterface::asBinder(service)->isBinderAlive()) { 36 sp<IBinder> binder = defaultServiceManager()->checkService(String16("permission")); 37 if (binder == nullptr) { 38 // Wait for the activity service to come back... 39 if (startTime == 0) { 40 startTime = uptimeMillis(); 41 ALOGI("Waiting for permission service"); 42 } else if ((uptimeMillis() - startTime) > 10000) { 43 ALOGW("Waiting too long for permission service, giving up"); 44 service = NULL; 45 break; 46 } 47 sleep(1); 48 } else { 49 service = interface_cast<IPermissionController>(binder); 50 mService = service; 51 } 52 } 53 return service; 54} 55 56bool PermissionController::checkPermission(const String16& permission, int32_t pid, int32_t uid) 57{ 58 sp<IPermissionController> service = getService(); 59 return service != NULL ? service->checkPermission(permission, pid, uid) : false; 60} 61 62int32_t PermissionController::noteOp(const String16& op, int32_t uid, const String16& packageName) 63{ 64 sp<IPermissionController> service = getService(); 65 return service != NULL ? service->noteOp(op, uid, packageName) : MODE_ERRORED; 66} 67 68void PermissionController::getPackagesForUid(const uid_t uid, Vector<String16> &packages) 69{ 70 sp<IPermissionController> service = getService(); 71 if (service != nullptr) { 72 service->getPackagesForUid(uid, packages); 73 } 74} 75 76bool PermissionController::isRuntimePermission(const String16& permission) 77{ 78 sp<IPermissionController> service = getService(); 79 return service != nullptr ? service->isRuntimePermission(permission) : false; 80} 81 82int PermissionController::getPackageUid(const String16& package, int flags) 83{ 84 sp<IPermissionController> service = getService(); 85 return service != nullptr ? service->getPackageUid(package, flags) : -1; 86} 87 88}; // namespace android 89