Fix broken NDK sensor manager API.

Change-Id: I21bb8b0dcfd3f1c812753a9fd77dea792e7155f2
This commit is contained in:
Svet Ganov 2015-05-07 10:50:59 -07:00 committed by Svetoslav
parent cbe13ef59b
commit 5fa32d4b08
2 changed files with 81 additions and 0 deletions

View File

@ -192,6 +192,30 @@ typedef ASensorRef const* ASensorList;
/*****************************************************************************/
/*
* Get a reference to the sensor manager. ASensorManager is a singleton
* per package as different packages may have access to different sensors.
*
* Deprecated: Use ASensorManager_getInstanceForPackage(const char*) instead.
*
* Example:
*
* ASensorManager* sensorManager = ASensorManager_getInstance();
*
*/
__attribute__ ((deprecated)) ASensorManager* ASensorManager_getInstance();
/*
* Get a reference to the sensor manager. ASensorManager is a singleton
* per package as different packages may have access to different sensors.
*
* Example:
*
* ASensorManager* sensorManager = ASensorManager_getInstanceForPackage("foo.bar.baz");
*
*/
ASensorManager* ASensorManager_getInstanceForPackage(const char* packageName);
/*
* Returns the list of available sensors.
*/

View File

@ -17,10 +17,14 @@
#ifndef ANDROID_GUI_SENSOR_MANAGER_H
#define ANDROID_GUI_SENSOR_MANAGER_H
#include <map>
#include <stdint.h>
#include <sys/types.h>
#include <binder/IBinder.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <utils/Errors.h>
#include <utils/RefBase.h>
@ -47,6 +51,56 @@ class SensorManager :
public ASensorManager
{
public:
static SensorManager& getInstanceForPackage(const String16& packageName) {
Mutex::Autolock _l(sLock);
SensorManager* sensorManager;
std::map<String16, SensorManager*>::iterator iterator =
sPackageInstances.find(packageName);
if (iterator != sPackageInstances.end()) {
sensorManager = iterator->second;
} else {
String16 opPackageName = packageName;
// It is possible that the calling code has no access to the package name.
// In this case we will get the packages for the calling UID and pick the
// first one for attributing the app op. This will work correctly for
// runtime permissions as for legacy apps we will toggle the app op for
// all packages in the UID. The caveat is that the operation may be attributed
// to the wrong package and stats based on app ops may be slightly off.
if (opPackageName.size() <= 0) {
sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
if (binder != 0) {
const uid_t uid = IPCThreadState::self()->getCallingUid();
Vector<String16> packages;
interface_cast<IPermissionController>(binder)->getPackagesForUid(uid, packages);
if (!packages.isEmpty()) {
opPackageName = packages[0];
} else {
ALOGE("No packages for calling UID");
}
} else {
ALOGE("Cannot get permission service");
}
}
sensorManager = new SensorManager(opPackageName);
// If we had no package name, we looked it up from the UID and the sensor
// manager instance we created should also be mapped to the empty package
// name, to avoid looking up the packages for a UID and get the same result.
if (packageName.size() <= 0) {
sPackageInstances.insert(std::make_pair(String16(), sensorManager));
}
// Stash the per package sensor manager.
sPackageInstances.insert(std::make_pair(opPackageName, sensorManager));
}
return *sensorManager;
}
SensorManager(const String16& opPackageName);
~SensorManager();
@ -62,6 +116,9 @@ private:
status_t assertStateLocked() const;
private:
static Mutex sLock;
static std::map<String16, SensorManager*> sPackageInstances;
mutable Mutex mLock;
mutable sp<ISensorServer> mSensorServer;
mutable Sensor const** mSensorList;