134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
/*
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* Copyright (C) 2010 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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#ifndef ANDROID_GUI_SENSOR_MANAGER_H
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#define ANDROID_GUI_SENSOR_MANAGER_H
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#include <map>
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#include <stdint.h>
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#include <sys/types.h>
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#include <binder/IBinder.h>
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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#include <utils/Singleton.h>
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#include <utils/Vector.h>
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#include <utils/String8.h>
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#include <gui/SensorEventQueue.h>
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// ----------------------------------------------------------------------------
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// Concrete types for the NDK
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struct ASensorManager { };
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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class ISensorServer;
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class Sensor;
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class SensorEventQueue;
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// ----------------------------------------------------------------------------
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class SensorManager :
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public ASensorManager
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{
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public:
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static SensorManager& getInstanceForPackage(const String16& packageName) {
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Mutex::Autolock _l(sLock);
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SensorManager* sensorManager;
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std::map<String16, SensorManager*>::iterator iterator =
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sPackageInstances.find(packageName);
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if (iterator != sPackageInstances.end()) {
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sensorManager = iterator->second;
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} else {
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String16 opPackageName = packageName;
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// It is possible that the calling code has no access to the package name.
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// In this case we will get the packages for the calling UID and pick the
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// first one for attributing the app op. This will work correctly for
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// runtime permissions as for legacy apps we will toggle the app op for
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// all packages in the UID. The caveat is that the operation may be attributed
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// to the wrong package and stats based on app ops may be slightly off.
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if (opPackageName.size() <= 0) {
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sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
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if (binder != 0) {
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const uid_t uid = IPCThreadState::self()->getCallingUid();
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Vector<String16> packages;
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interface_cast<IPermissionController>(binder)->getPackagesForUid(uid, packages);
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if (!packages.isEmpty()) {
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opPackageName = packages[0];
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} else {
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ALOGE("No packages for calling UID");
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}
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} else {
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ALOGE("Cannot get permission service");
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}
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}
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sensorManager = new SensorManager(opPackageName);
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// If we had no package name, we looked it up from the UID and the sensor
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// manager instance we created should also be mapped to the empty package
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// name, to avoid looking up the packages for a UID and get the same result.
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if (packageName.size() <= 0) {
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sPackageInstances.insert(std::make_pair(String16(), sensorManager));
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}
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// Stash the per package sensor manager.
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sPackageInstances.insert(std::make_pair(opPackageName, sensorManager));
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}
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return *sensorManager;
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}
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SensorManager(const String16& opPackageName);
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~SensorManager();
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ssize_t getSensorList(Sensor const* const** list) const;
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Sensor const* getDefaultSensor(int type);
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sp<SensorEventQueue> createEventQueue(String8 packageName = String8(""), int mode = 0);
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status_t enableDataInjection(bool enable);
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private:
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// DeathRecipient interface
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void sensorManagerDied();
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status_t assertStateLocked() const;
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private:
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static Mutex sLock;
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static std::map<String16, SensorManager*> sPackageInstances;
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mutable Mutex mLock;
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mutable sp<ISensorServer> mSensorServer;
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mutable Sensor const** mSensorList;
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mutable Vector<Sensor> mSensors;
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mutable sp<IBinder::DeathRecipient> mDeathObserver;
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const String16 mOpPackageName;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_GUI_SENSOR_MANAGER_H
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