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// SPDX-License-Identifier: GPL-2.0
#include "btdiscovery.h"
#include "downloadfromdcthread.h"
#include "core/libdivecomputer.h"
#include <QDebug>
extern QMap<QString, dc_descriptor_t *> descriptorLookup;
BTDiscovery *BTDiscovery::m_instance = NULL;
static dc_descriptor_t *getDeviceType(QString btName)
// central function to convert a BT name to a Subsurface known vendor/model pair
{
QString vendor, product;
if (btName.startsWith("OSTC")) {
vendor = "Heinrichs Weikamp";
if (btName.mid(4,2) == "3#") product = "OSTC 3";
else if (btName.mid(4,2) == "3+") product = "OSTC 3+";
else if (btName.mid(4,2) == "s#") product = "OSTC Sport";
else if (btName.mid(4,2) == "4-") product = "OSTC 4";
else if (btName.mid(4,2) == "2-") product = "OSTC 2N";
// all OSTCs are HW_FAMILY_OSTC_3, so when we do not know,
// just try this
else product = "OSTC 3"; // all OSTCs are HW_FAMILY_OSTC_3
}
if (!vendor.isEmpty() && !product.isEmpty())
return(descriptorLookup[vendor + product]);
return(NULL);
}
BTDiscovery::BTDiscovery(QObject *parent)
{
Q_UNUSED(parent)
if (m_instance) {
qDebug() << "trying to create an additional BTDiscovery object";
return;
}
m_instance = this;
#if defined(BT_SUPPORT)
if (localBtDevice.isValid() &&
localBtDevice.hostMode() == QBluetoothLocalDevice::HostConnectable) {
btPairedDevices.clear();
qDebug() << "localDevice " + localBtDevice.name() + " is valid, starting discovery";
#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
discoveryAgent = new QBluetoothDeviceDiscoveryAgent(this);
connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &BTDiscovery::btDeviceDiscovered);
discoveryAgent->start();
#endif
#if defined(Q_OS_ANDROID) && defined(BT_SUPPORT)
getBluetoothDevices();
// and add the paired devices to the internal data
// So behaviour is same on Linux/Bluez stack and
// Android/Java stack with respect to discovery
for (int i = 0; i < btPairedDevices.length(); i++) {
btDeviceDiscoveredMain(btPairedDevices[i]);
}
#endif
for (int i = 0; i < btPairedDevices.length(); i++) {
qDebug() << "Paired =" << btPairedDevices[i].name << btPairedDevices[i].address.toString();
}
#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
discoveryAgent->stop();
#endif
} else {
qDebug() << "localBtDevice isn't valid";
}
#endif
}
BTDiscovery::~BTDiscovery()
{
m_instance = NULL;
#if defined(BT_SUPPORT)
free(discoveryAgent);
#endif
}
BTDiscovery *BTDiscovery::instance()
{
if (!m_instance)
m_instance = new BTDiscovery();
return m_instance;
}
#if defined(BT_SUPPORT)
extern void addBtUuid(QBluetoothUuid uuid);
extern QHash<QString, QStringList> productList;
extern QStringList vendorList;
void BTDiscovery::btDeviceDiscovered(const QBluetoothDeviceInfo &device)
{
btPairedDevice this_d;
this_d.address = device.address();
this_d.name = device.name();
btPairedDevices.append(this_d);
QList<QBluetoothUuid> serviceUuids = device.serviceUuids();
foreach (QBluetoothUuid id, serviceUuids) {
addBtUuid(id);
qDebug() << id.toByteArray();
}
btDeviceDiscoveredMain(this_d);
}
void BTDiscovery::btDeviceDiscoveredMain(const btPairedDevice &device)
{
btVendorProduct btVP;
QString newDevice;
dc_descriptor_t *newDC = getDeviceType(device.name);
if (newDC)
newDevice = dc_descriptor_get_product(newDC);
else
newDevice = device.name;
qDebug() << "Found new device:" << newDevice << device.address;
QString vendor;
if (newDC) foreach (vendor, productList.keys()) {
if (productList[vendor].contains(newDevice)) {
qDebug() << "this could be a " + vendor + " " +
(newDevice == "OSTC 3" ? "OSTC family" : newDevice);
btVP.btpdi = device;
btVP.dcDescriptor = newDC;
btVP.vendorIdx = vendorList.indexOf(vendor);
btVP.productIdx = productList[vendor].indexOf(newDevice);
qDebug() << "adding new btDCs entry (detected DC)" << newDevice << btVP.vendorIdx << btVP.productIdx << btVP.btpdi.address;;
btDCs << btVP;
break;
}
}
productList[QObject::tr("Paired Bluetooth Devices")].append(device.name + " (" + device.address.toString() + ")");
btVP.btpdi = device;
btVP.dcDescriptor = newDC;
btVP.vendorIdx = vendorList.indexOf(QObject::tr("Paired Bluetooth Devices"));
btVP.productIdx = productList[QObject::tr("Paired Bluetooth Devices")].indexOf(device.name);
qDebug() << "adding new btDCs entry (all paired)" << newDevice << btVP.vendorIdx << btVP.productIdx << btVP.btpdi.address;
btAllDevices << btVP;
}
QList<BTDiscovery::btVendorProduct> BTDiscovery::getBtDcs()
{
return btDCs;
}
QList <BTDiscovery::btVendorProduct> BTDiscovery::getBtAllDevices()
{
return btAllDevices;
}
// Android: As Qt is not able to pull the pairing data from a device, i
// a lengthy discovery process is needed to see what devices are paired. On
// https://forum.qt.io/topic/46075/solved-bluetooth-list-paired-devices
// user s.frings74 does, however, present a solution to this using JNI.
// Currently, this code is taken "as is".
#if defined(Q_OS_ANDROID)
void BTDiscovery::getBluetoothDevices()
{
struct BTDiscovery::btPairedDevice result;
// Query via Android Java API.
// returns a BluetoothAdapter
QAndroidJniObject adapter=QAndroidJniObject::callStaticObjectMethod("android/bluetooth/BluetoothAdapter","getDefaultAdapter","()Landroid/bluetooth/BluetoothAdapter;");
if (checkException("BluetoothAdapter.getDefaultAdapter()", &adapter)) {
return;
}
// returns a Set<BluetoothDevice>
QAndroidJniObject pairedDevicesSet=adapter.callObjectMethod("getBondedDevices","()Ljava/util/Set;");
if (checkException("BluetoothAdapter.getBondedDevices()", &pairedDevicesSet)) {
return;
}
jint size=pairedDevicesSet.callMethod<jint>("size");
checkException("Set<BluetoothDevice>.size()", &pairedDevicesSet);
if (size > 0) {
// returns an Iterator<BluetoothDevice>
QAndroidJniObject iterator=pairedDevicesSet.callObjectMethod("iterator","()Ljava/util/Iterator;");
if (checkException("Set<BluetoothDevice>.iterator()", &iterator)) {
return;
}
for (int i = 0; i < size; i++) {
// returns a BluetoothDevice
QAndroidJniObject dev=iterator.callObjectMethod("next","()Ljava/lang/Object;");
if (checkException("Iterator<BluetoothDevice>.next()", &dev)) {
continue;
}
result.address = QBluetoothAddress(dev.callObjectMethod("getAddress","()Ljava/lang/String;").toString());
result.name = dev.callObjectMethod("getName", "()Ljava/lang/String;").toString();
btPairedDevices.append(result);
}
}
}
bool BTDiscovery::checkException(const char* method, const QAndroidJniObject *obj)
{
static QAndroidJniEnvironment env;
bool result = false;
if (env->ExceptionCheck()) {
qCritical("Exception in %s", method);
env->ExceptionDescribe();
env->ExceptionClear();
result=true;
}
if (!(obj == NULL || obj->isValid())) {
qCritical("Invalid object returned by %s", method);
result=true;
}
return result;
}
#endif // Q_OS_ANDROID
#endif // BT_SUPPORT
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