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135 lines
4.5 KiB
135 lines
4.5 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <mutex>
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#include <unistd.h>
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#include <android/permission_manager.h>
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#include <binder/ActivityManager.h>
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#include <binder/Binder.h>
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#include <binder/IServiceManager.h>
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#include <utils/SystemClock.h>
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namespace android {
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ActivityManager::ActivityManager()
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{
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}
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sp<IActivityManager> ActivityManager::getService()
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{
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std::lock_guard<Mutex> scoped_lock(mLock);
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int64_t startTime = 0;
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sp<IActivityManager> service = mService;
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while (service == nullptr || !IInterface::asBinder(service)->isBinderAlive()) {
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sp<IBinder> binder = defaultServiceManager()->checkService(String16("activity"));
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if (binder == nullptr) {
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// Wait for the activity service to come back...
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if (startTime == 0) {
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startTime = uptimeMillis();
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ALOGI("Waiting for activity service");
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} else if ((uptimeMillis() - startTime) > 1000000) {
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ALOGW("Waiting too long for activity service, giving up");
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service = nullptr;
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break;
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}
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usleep(25000);
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} else {
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service = interface_cast<IActivityManager>(binder);
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mService = service;
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}
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}
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return service;
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}
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int ActivityManager::openContentUri(const String16& stringUri)
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{
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sp<IActivityManager> service = getService();
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return service != nullptr ? service->openContentUri(stringUri) : -1;
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}
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status_t ActivityManager::registerUidObserver(const sp<IUidObserver>& observer,
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const int32_t event,
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const int32_t cutpoint,
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const String16& callingPackage)
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{
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return service->registerUidObserver(observer, event, cutpoint, callingPackage);
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}
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// ActivityManagerService appears dead. Return usual error code for dead service.
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return DEAD_OBJECT;
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}
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status_t ActivityManager::unregisterUidObserver(const sp<IUidObserver>& observer)
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{
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return service->unregisterUidObserver(observer);
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}
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// ActivityManagerService appears dead. Return usual error code for dead service.
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return DEAD_OBJECT;
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}
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bool ActivityManager::isUidActive(const uid_t uid, const String16& callingPackage)
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{
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return service->isUidActive(uid, callingPackage);
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}
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return false;
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}
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int32_t ActivityManager::getUidProcessState(const uid_t uid, const String16& callingPackage)
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{
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return service->getUidProcessState(uid, callingPackage);
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}
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return PROCESS_STATE_UNKNOWN;
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}
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status_t ActivityManager::checkPermission(const String16& permission,
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const pid_t pid,
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const uid_t uid,
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int32_t* outResult) {
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return service->checkPermission(permission, pid, uid, outResult);
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}
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// ActivityManagerService appears dead. Return usual error code for dead service.
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return DEAD_OBJECT;
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}
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status_t ActivityManager::linkToDeath(const sp<IBinder::DeathRecipient>& recipient) {
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return IInterface::asBinder(service)->linkToDeath(recipient);
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}
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return INVALID_OPERATION;
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}
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status_t ActivityManager::unlinkToDeath(const sp<IBinder::DeathRecipient>& recipient) {
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sp<IActivityManager> service = getService();
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if (service != nullptr) {
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return IInterface::asBinder(service)->unlinkToDeath(recipient);
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}
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return INVALID_OPERATION;
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}
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} // namespace android
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