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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2019 BogDan Vatra <bogdan@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:critical reason:execute-external-code
#include "sensormanager.h"
#include <QtCore/qcoreapplication.h>
#include <QtCore/qjnitypes.h>
#include <dlfcn.h>
Q_DECLARE_JNI_CLASS(AndroidContext, "android/content/Context")
Q_DECLARE_JNI_CLASS(Sensor, "android/hardware/Sensor")
SensorManager::SensorManager()
{
auto sensorService =
QJniObject::getStaticField<QtJniTypes::AndroidContext, jstring>("SENSOR_SERVICE");
QJniObject context = QNativeInterface::QAndroidApplication::context();
m_sensorManager = context.callMethod<jobject>("getSystemService",
sensorService.object<jstring>());
setObjectName("QtSensorsLooperThread");
start();
m_waitForStart.wait();
}
SensorManager::~SensorManager()
{
m_quit.storeRelaxed(1);
wait();
}
QJniObject SensorManager::javaSensor(const ASensor *sensor) const
{
if (!sensor)
return {};
return m_sensorManager.callMethod<QtJniTypes::Sensor>("getDefaultSensor",
ASensor_getType(sensor));
}
QSharedPointer<SensorManager> &SensorManager::instance()
{
static QSharedPointer<SensorManager> looper{new SensorManager};
return looper;
}
ALooper *SensorManager::looper() const
{
return m_looper;
}
static inline ASensorManager* androidManager()
{
QJniObject context = QNativeInterface::QAndroidApplication::context();
auto packageName = context.callMethod<jstring>("getPackageName").toString().toUtf8();
#if __ANDROID_API__ >= 26
return ASensorManager_getInstanceForPackage(packageName.constData());
#else
if (QNativeInterface::QAndroidApplication::sdkVersion() >= 26) {
using GetInstanceForPackage = ASensorManager *(*)(const char *);
auto handler = dlopen("libandroid.so", RTLD_NOW);
auto function = GetInstanceForPackage(dlsym(handler, "ASensorManager_getInstanceForPackage"));
if (function) {
auto res = function(packageName.constData());
dlclose(handler);
return res;
}
dlclose(handler);
}
return ASensorManager_getInstance();
#endif
}
ASensorManager *SensorManager::manager() const
{
static auto sensorManger = androidManager();
return sensorManger;
}
QString SensorManager::description(const ASensor *sensor) const
{
if (!sensor)
return {};
QString description = QString::fromUtf8(ASensor_getName(sensor)) + " "
+ ASensor_getVendor(sensor);
if (const QJniObject javaObject = javaSensor(sensor); javaObject.isValid())
description += " v" + QString::number(javaObject.callMethod<jint>("getVersion"));
return description;
}
double SensorManager::getMaximumRange(const ASensor *sensor) const
{
const QJniObject javaObject = javaSensor(sensor);
if (!javaObject.isValid())
return 0.0;
return qreal(javaObject.callMethod<jfloat>("getMaximumRange"));
}
void SensorManager::run()
{
m_looper = ALooper_prepare(0);
m_waitForStart.countDown();
do {
// Result can be also ALOOPER_POLL_CALLBACK or identifier, those are ignored.
int result = ALooper_pollOnce(5 /*ms*/, nullptr, nullptr, nullptr);
if (result == ALOOPER_POLL_TIMEOUT || result == ALOOPER_POLL_WAKE) {
QThread::yieldCurrentThread();
} else if (result == ALOOPER_POLL_ERROR) {
qCritical("SensorManager::run() ALooper_pollOnce() returned ALOOPER_POLL_ERROR");
break;
}
} while (!m_quit.loadRelaxed());
}