1// Copyright (C) 2017 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qlowenergycontroller_bluezdbus_p.h"
5#include "bluez/adapter1_bluez5_p.h"
6#include "bluez/bluez5_helper_p.h"
7#include "bluez/device1_bluez5_p.h"
8#include "bluez/gattservice1_p.h"
9#include "bluez/gattchar1_p.h"
10#include "bluez/gattdesc1_p.h"
11#include "bluez/battery1_p.h"
12#include "bluez/objectmanager_p.h"
13#include "bluez/properties_p.h"
14#include "bluez/bluezperipheralapplication_p.h"
15#include "bluez/bluezperipheralconnectionmanager_p.h"
16
17QT_BEGIN_NAMESPACE
18
19Q_DECLARE_LOGGING_CATEGORY(QT_BT_BLUEZ)
20
21QLowEnergyControllerPrivateBluezDBus::QLowEnergyControllerPrivateBluezDBus(
22 const QString &adapterPathWithPeripheralSupport)
23 : QLowEnergyControllerPrivate(),
24 adapterPathWithPeripheralSupport(adapterPathWithPeripheralSupport)
25{
26}
27
28QLowEnergyControllerPrivateBluezDBus::~QLowEnergyControllerPrivateBluezDBus()
29{
30 if (state != QLowEnergyController::UnconnectedState) {
31 qCWarning(QT_BT_BLUEZ) << "Low Energy Controller is not Unconnected when deleted."
32 << "Deleted in state:" << state;
33 }
34}
35
36void QLowEnergyControllerPrivateBluezDBus::init()
37{
38 if (role == QLowEnergyController::PeripheralRole) {
39 Q_ASSERT(!adapterPathWithPeripheralSupport.isEmpty());
40
41 peripheralApplication = new QtBluezPeripheralApplication(adapterPathWithPeripheralSupport,
42 this);
43
44 QObject::connect(sender: peripheralApplication, signal: &QtBluezPeripheralApplication::errorOccurred, context: this,
45 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralApplicationError);
46
47 QObject::connect(sender: peripheralApplication, signal: &QtBluezPeripheralApplication::registered, context: this,
48 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralApplicationRegistered);
49
50 QObject::connect(sender: peripheralApplication,
51 signal: &QtBluezPeripheralApplication::characteristicValueUpdatedByRemote, context: this,
52 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralCharacteristicValueUpdate);
53
54 QObject::connect(sender: peripheralApplication,
55 signal: &QtBluezPeripheralApplication::descriptorValueUpdatedByRemote, context: this,
56 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralDescriptorValueUpdate);
57
58 peripheralConnectionManager =
59 new QtBluezPeripheralConnectionManager(localAdapter, this);
60
61 QObject::connect(sender: peripheralApplication,
62 signal: &QtBluezPeripheralApplication::remoteDeviceAccessEvent,
63 context: peripheralConnectionManager,
64 slot: &QtBluezPeripheralConnectionManager::remoteDeviceAccessEvent);
65
66 QObject::connect(sender: peripheralConnectionManager,
67 signal: &QtBluezPeripheralConnectionManager::connectivityStateChanged, context: this,
68 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralConnectivityChanged);
69
70 QObject::connect(sender: peripheralConnectionManager,
71 signal: &QtBluezPeripheralConnectionManager::remoteDeviceChanged, context: this,
72 slot: &QLowEnergyControllerPrivateBluezDBus::handlePeripheralRemoteDeviceChanged);
73 }
74}
75
76void QLowEnergyControllerPrivateBluezDBus::devicePropertiesChanged(
77 const QString &interface, const QVariantMap &changedProperties,
78 const QStringList &/*removedProperties*/)
79{
80 if (interface == QStringLiteral("org.bluez.Device1")) {
81 qCDebug(QT_BT_BLUEZ) << "######" << interface << changedProperties;
82 if (changedProperties.contains(QStringLiteral("ServicesResolved"))) {
83 //we could check for Connected property as well, but we choose to wait
84 //for ServicesResolved being true
85
86 if (pendingConnect) {
87 bool isResolved = changedProperties.value(QStringLiteral("ServicesResolved")).toBool();
88 if (isResolved) {
89 setState(QLowEnergyController::ConnectedState);
90 pendingConnect = false;
91 disconnectSignalRequired = true;
92 Q_Q(QLowEnergyController);
93 emit q->connected();
94 }
95 }
96 }
97
98 if (changedProperties.contains(QStringLiteral("Connected"))) {
99 bool isConnected = changedProperties.value(QStringLiteral("Connected")).toBool();
100 if (!isConnected) {
101 switch (state) {
102 case QLowEnergyController::ConnectingState:
103 case QLowEnergyController::ConnectedState:
104 case QLowEnergyController::DiscoveringState:
105 case QLowEnergyController::DiscoveredState:
106 case QLowEnergyController::ClosingState:
107 {
108 QLowEnergyController::Error newError = QLowEnergyController::NoError;
109 if (pendingConnect)
110 newError = QLowEnergyController::ConnectionError;
111
112 executeClose(newError);
113 }
114 break;
115 case QLowEnergyController::AdvertisingState:
116 case QLowEnergyController::UnconnectedState:
117 //ignore
118 break;
119 }
120 }
121 }
122
123 if (changedProperties.contains(QStringLiteral("UUIDs"))) {
124 const QStringList newUuidStringList = changedProperties.value(QStringLiteral("UUIDs")).toStringList();
125 QList<QBluetoothUuid> newUuidList;
126 for (const QString &uuidString : newUuidStringList)
127 newUuidList.append(t: QBluetoothUuid(uuidString));
128
129 for (const QBluetoothUuid &uuid : serviceList.keys()) {
130 if (!newUuidList.contains(t: uuid)) {
131 qCDebug(QT_BT_BLUEZ) << __func__ << "Service" << uuid << "has been removed";
132 QSharedPointer<QLowEnergyServicePrivate> service = serviceList.take(key: uuid);
133 service->setController(nullptr);
134 dbusServices.remove(key: uuid);
135 }
136 }
137 }
138
139 } else if (interface == QStringLiteral("org.bluez.Battery1")) {
140 qCDebug(QT_BT_BLUEZ) << "######" << interface << changedProperties;
141 if (changedProperties.contains(QStringLiteral("Percentage"))) {
142 // if battery service is discovered and ClientCharConfig is enabled
143 // emit characteristicChanged() signal
144 const QBluetoothUuid uuid(QBluetoothUuid::ServiceClassUuid::BatteryService);
145 if (!serviceList.contains(key: uuid) || !dbusServices.contains(key: uuid)
146 || !dbusServices[uuid].hasBatteryService
147 || dbusServices[uuid].batteryInterface.isNull())
148 return;
149
150 QSharedPointer<QLowEnergyServicePrivate> serviceData = serviceList.value(key: uuid);
151 if (serviceData->state != QLowEnergyService::RemoteServiceDiscovered)
152 return;
153
154 QHash<QLowEnergyHandle, QLowEnergyServicePrivate::CharData>::iterator iter;
155 iter = serviceData->characteristicList.begin();
156 while (iter != serviceData->characteristicList.end()) {
157 auto &charData = iter.value();
158 if (charData.uuid != QBluetoothUuid::CharacteristicType::BatteryLevel)
159 continue;
160
161 // Client Characteristic Notification enabled?
162 bool cccActive = false;
163 for (const QLowEnergyServicePrivate::DescData &descData : std::as_const(t&: charData.descriptorList)) {
164 if (descData.uuid != QBluetoothUuid(QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration))
165 continue;
166 if (descData.value == QByteArray::fromHex(hexEncoded: "0100")
167 || descData.value == QByteArray::fromHex(hexEncoded: "0200")) {
168 cccActive = true;
169 break;
170 }
171 }
172
173 const QByteArray newValue(1, char(dbusServices[uuid].batteryInterface->percentage()));
174 qCDebug(QT_BT_BLUEZ) << "Battery1 char update" << cccActive
175 << charData.value.toHex() << "->" << newValue.toHex();
176 if (cccActive && newValue != charData.value) {
177 qCDebug(QT_BT_BLUEZ) << "Property update for Battery1";
178 charData.value = newValue;
179 QLowEnergyCharacteristic ch(serviceData, iter.key());
180 emit serviceData->characteristicChanged(characteristic: ch, newValue);
181 }
182
183 break;
184 }
185 }
186 }
187}
188
189void QLowEnergyControllerPrivateBluezDBus::characteristicPropertiesChanged(
190 QLowEnergyHandle charHandle, const QString &interface,
191 const QVariantMap &changedProperties,
192 const QStringList &/*removedProperties*/)
193{
194 //qCDebug(QT_BT_BLUEZ) << "$$$$$$$$$$$$$$$$$$ char monitor"
195 // << interface << changedProperties << charHandle;
196 if (interface != QStringLiteral("org.bluez.GattCharacteristic1"))
197 return;
198
199 if (!changedProperties.contains(QStringLiteral("Value")))
200 return;
201
202 const QLowEnergyCharacteristic changedChar = characteristicForHandle(handle: charHandle);
203 const QLowEnergyDescriptor ccnDescriptor = changedChar.descriptor(
204 uuid: QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration);
205 if (!ccnDescriptor.isValid())
206 return;
207
208 const QByteArray newValue = changedProperties.value(QStringLiteral("Value")).toByteArray();
209 if (changedChar.properties() & QLowEnergyCharacteristic::Read)
210 updateValueOfCharacteristic(charHandle, value: newValue, appendValue: false); //TODO upgrade to NEW_VALUE/APPEND_VALUE
211
212 auto service = serviceForHandle(handle: charHandle);
213
214 if (!service.isNull())
215 emit service->characteristicChanged(characteristic: changedChar, newValue);
216}
217
218void QLowEnergyControllerPrivateBluezDBus::interfacesRemoved(const QDBusObjectPath &objectPath,
219 const QStringList &interfaces)
220{
221 if (objectPath.path() == device->path()) {
222 if (interfaces.contains(QStringLiteral("org.bluez.Device1"))) {
223 qCWarning(QT_BT_BLUEZ) << "DBus Device1 was removed";
224 executeClose(newError: QLowEnergyController::UnknownRemoteDeviceError);
225 } else {
226 qCDebug(QT_BT_BLUEZ) << "DBus interfaces" << interfaces << "were removed from"
227 << objectPath.path();
228 }
229 } else if (objectPath.path() == adapter->path()) {
230 qCWarning(QT_BT_BLUEZ) << "DBus Adapter was removed";
231 executeClose(newError: QLowEnergyController::InvalidBluetoothAdapterError);
232 }
233}
234
235void QLowEnergyControllerPrivateBluezDBus::resetController()
236{
237 if (managerBluez) {
238 delete managerBluez;
239 managerBluez = nullptr;
240 }
241
242 if (adapter) {
243 delete adapter;
244 adapter = nullptr;
245 }
246
247 if (device) {
248 delete device;
249 device = nullptr;
250 }
251
252 if (deviceMonitor) {
253 delete deviceMonitor;
254 deviceMonitor = nullptr;
255 }
256
257 if (advertiser) {
258 delete advertiser;
259 advertiser = nullptr;
260 }
261
262 if (peripheralApplication)
263 peripheralApplication->reset();
264
265 if (peripheralConnectionManager)
266 peripheralConnectionManager->reset();
267
268 remoteName.clear();
269 remoteMtu = -1;
270
271 dbusServices.clear();
272 jobs.clear();
273 invalidateServices();
274
275 pendingConnect = disconnectSignalRequired = false;
276 jobPending = false;
277}
278
279void QLowEnergyControllerPrivateBluezDBus::connectToDeviceHelper()
280{
281 resetController();
282
283 bool ok = false;
284 const QString hostAdapterPath = findAdapterForAddress(wantedAddress: localAdapter, ok: &ok);
285 if (!ok || hostAdapterPath.isEmpty()) {
286 qCWarning(QT_BT_BLUEZ) << "Cannot find suitable bluetooth adapter";
287 setError(QLowEnergyController::InvalidBluetoothAdapterError);
288 return;
289 }
290
291 auto manager = std::make_unique<OrgFreedesktopDBusObjectManagerInterface>(
292 QStringLiteral("org.bluez"), QStringLiteral("/"), args: QDBusConnection::systemBus());
293
294 QDBusPendingReply<ManagedObjectList> reply = manager->GetManagedObjects();
295 reply.waitForFinished();
296 if (reply.isError()) {
297 qCWarning(QT_BT_BLUEZ) << "Cannot enumerate Bluetooth devices for GATT connect";
298 setError(QLowEnergyController::ConnectionError);
299 return;
300 }
301
302 QString devicePath;
303 ManagedObjectList managedObjectList = reply.value();
304 for (ManagedObjectList::const_iterator it = managedObjectList.constBegin(); it != managedObjectList.constEnd(); ++it) {
305 const InterfaceList &ifaceList = it.value();
306
307 for (InterfaceList::const_iterator jt = ifaceList.constBegin(); jt != ifaceList.constEnd(); ++jt) {
308 const QString &iface = jt.key();
309 const QVariantMap &ifaceValues = jt.value();
310
311 if (iface == QStringLiteral("org.bluez.Device1")) {
312 if (remoteDevice.toString() == ifaceValues.value(QStringLiteral("Address")).toString())
313 {
314 const QVariant adapterForCurrentDevice = ifaceValues.value(QStringLiteral("Adapter"));
315 if (qvariant_cast<QDBusObjectPath>(v: adapterForCurrentDevice).path() == hostAdapterPath) {
316 devicePath = it.key().path();
317 break;
318 }
319 }
320 }
321 }
322
323 if (!devicePath.isEmpty())
324 break;
325 }
326
327 if (devicePath.isEmpty()) {
328 qCDebug(QT_BT_BLUEZ) << "Cannot find targeted remote device. "
329 "Re-running device discovery might help";
330 setError(QLowEnergyController::UnknownRemoteDeviceError);
331 return;
332 }
333
334 managerBluez = manager.release();
335 connect(sender: managerBluez, signal: &OrgFreedesktopDBusObjectManagerInterface::InterfacesRemoved,
336 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::interfacesRemoved);
337 adapter = new OrgBluezAdapter1Interface(
338 QStringLiteral("org.bluez"), hostAdapterPath,
339 QDBusConnection::systemBus(), this);
340 device = new OrgBluezDevice1Interface(
341 QStringLiteral("org.bluez"), devicePath,
342 QDBusConnection::systemBus(), this);
343 deviceMonitor = new OrgFreedesktopDBusPropertiesInterfaceBluetooth(
344 QStringLiteral("org.bluez"), devicePath,
345 QDBusConnection::systemBus(), this);
346 connect(sender: deviceMonitor, signal: &OrgFreedesktopDBusPropertiesInterfaceBluetooth::PropertiesChanged,
347 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::devicePropertiesChanged);
348}
349
350void QLowEnergyControllerPrivateBluezDBus::connectToDevice()
351{
352 qCDebug(QT_BT_BLUEZ) << "QLowEnergyControllerPrivateBluezDBus::connectToDevice()";
353
354 connectToDeviceHelper();
355
356 if (!adapter || !device)
357 return;
358
359 if (!adapter->powered()) {
360 qCWarning(QT_BT_BLUEZ) << "Error: Local adapter is powered off";
361 setError(QLowEnergyController::ConnectionError);
362 return;
363 }
364
365 setState(QLowEnergyController::ConnectingState);
366
367 //Bluez interface is shared among all platform processes
368 //and hence we might be connected already
369 if (device->connected() && device->servicesResolved()) {
370 //connectToDevice is noop
371 disconnectSignalRequired = true;
372
373 setState(QLowEnergyController::ConnectedState);
374 Q_Q(QLowEnergyController);
375 emit q->connected();
376 return;
377 }
378
379 pendingConnect = true;
380
381 QDBusPendingReply<> reply = device->Connect();
382 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
383 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished, context: this,
384 slot: [this](QDBusPendingCallWatcher* call) {
385 QDBusPendingReply<> reply = *call;
386 if (reply.isError()) {
387 qCDebug(QT_BT_BLUEZ) << "BTLE_DBUS::connect() failed"
388 << reply.reply().errorName()
389 << reply.reply().errorMessage();
390 executeClose(newError: QLowEnergyController::UnknownError);
391 } // else -> connected when Connected property is set to true (see devicePropertiesChanged())
392 call->deleteLater();
393 });
394}
395
396void QLowEnergyControllerPrivateBluezDBus::disconnectFromDevice()
397{
398 if (role == QLowEnergyController::CentralRole) {
399 if (!device)
400 return;
401
402 setState(QLowEnergyController::ClosingState);
403
404 QDBusPendingReply<> reply = device->Disconnect();
405 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
406 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished, context: this,
407 slot: [this](QDBusPendingCallWatcher* call) {
408 QDBusPendingReply<> reply = *call;
409 if (reply.isError()) {
410 qCDebug(QT_BT_BLUEZ) << "BTLE_DBUS::disconnect() failed"
411 << reply.reply().errorName()
412 << reply.reply().errorMessage();
413 executeClose(newError: QLowEnergyController::UnknownError);
414 } else {
415 executeClose(newError: QLowEnergyController::NoError);
416 }
417 call->deleteLater();
418 });
419 } else {
420 Q_Q(QLowEnergyController);
421 peripheralConnectionManager->disconnectDevices();
422 resetController();
423 remoteDevice.clear();
424 const auto emitDisconnected = (state == QLowEnergyController::ConnectedState);
425 setState(QLowEnergyController::UnconnectedState);
426 if (emitDisconnected)
427 emit q->disconnected();
428 }
429}
430
431void QLowEnergyControllerPrivateBluezDBus::discoverServices()
432{
433 QDBusPendingReply<ManagedObjectList> reply = managerBluez->GetManagedObjects();
434 reply.waitForFinished();
435 if (reply.isError()) {
436 qCWarning(QT_BT_BLUEZ) << "Cannot discover services";
437 setError(QLowEnergyController::UnknownError);
438 setState(QLowEnergyController::DiscoveredState);
439 return;
440 }
441
442 Q_Q(QLowEnergyController);
443
444 auto setupServicePrivate = [&, q](
445 QLowEnergyService::ServiceType type, const QBluetoothUuid &uuid,
446 const QString &path, const bool battery1Interface = false){
447 QSharedPointer<QLowEnergyServicePrivate> priv = QSharedPointer<QLowEnergyServicePrivate>::create();
448 priv->uuid = uuid;
449 priv->type = type; // we make a guess we cannot validate
450 priv->setController(this);
451
452 GattService serviceContainer;
453 serviceContainer.servicePath = path;
454
455 if (battery1Interface) {
456 qCDebug(QT_BT_BLUEZ) << "Using Battery1 interface to emulate generic interface";
457 serviceContainer.hasBatteryService = true;
458 }
459
460 serviceList.insert(key: priv->uuid, value: priv);
461 dbusServices.insert(key: priv->uuid, value: serviceContainer);
462
463 emit q->serviceDiscovered(newService: priv->uuid);
464 };
465
466 const ManagedObjectList managedObjectList = reply.value();
467 const QString servicePathPrefix = device->path().append(QStringLiteral("/service"));
468
469 // The Bluez battery service (0x180f) support has evolved over time and needs additional logic:
470 //
471 // * Until 5.47 Bluez exposes battery services via generic interface (GattService1) only
472 // * Between 5.48..5.54 Bluez exposes battery service as a dedicated 'Battery1' interface only
473 // * From 5.55 Bluez exposes both the generic service as well as the dedicated 'Battery1'
474 //
475 // To hide the difference from users the 'Battery1' interface will be used to emulate the
476 // generic interface. Importantly also the GattService1 interface, if available, is available
477 // early whereas the Battery1 interface may be available only later (generated too late for
478 // this service discovery's purposes)
479 //
480 // The precedence for battery service here is as follows:
481 // * If available via GattService1, use that and ignore possible Battery1 interface
482 // * If Battery1 interface is available or the 'org.bluez.Device1' lists battery service
483 // amongst list of available services, mark the service such that the code will later
484 // look up the Battery1 service details
485 bool gattBatteryService{false};
486 QString batteryServicePath;
487
488 for (ManagedObjectList::const_iterator it = managedObjectList.constBegin(); it != managedObjectList.constEnd(); ++it) {
489 const InterfaceList &ifaceList = it.value();
490
491 if (!it.key().path().startsWith(s: device->path()))
492 continue;
493
494 if (it.key().path() == device->path()) {
495 // See if the battery service is available or is assumed to be available later
496 for (InterfaceList::const_iterator battIter = ifaceList.constBegin(); battIter != ifaceList.constEnd(); ++battIter) {
497 const QString &iface = battIter.key();
498 if (iface == QStringLiteral("org.bluez.Battery1")) {
499 qCDebug(QT_BT_BLUEZ) << "Dedicated Battery1 service available";
500 batteryServicePath = it.key().path();
501 break;
502 } else if (iface == QStringLiteral("org.bluez.Device1")) {
503 for (auto const& uuid :
504 battIter.value()[QStringLiteral("UUIDs")].toStringList()) {
505 if (QBluetoothUuid(uuid) ==
506 QBluetoothUuid::ServiceClassUuid::BatteryService) {
507 qCDebug(QT_BT_BLUEZ) << "Battery service listed as available service";
508 batteryServicePath = it.key().path();
509 break;
510 }
511 }
512 }
513 }
514 continue;
515 }
516
517 if (!it.key().path().startsWith(s: servicePathPrefix))
518 continue;
519
520 for (InterfaceList::const_iterator jt = ifaceList.constBegin(); jt != ifaceList.constEnd(); ++jt) {
521 const QString &iface = jt.key();
522
523 if (iface == QStringLiteral("org.bluez.GattService1")) {
524 QScopedPointer<OrgBluezGattService1Interface> service(new OrgBluezGattService1Interface(
525 QStringLiteral("org.bluez"),it.key().path(),
526 QDBusConnection::systemBus(), this));
527 if (QBluetoothUuid(service->uUID()) ==
528 QBluetoothUuid::ServiceClassUuid::BatteryService) {
529 qCDebug(QT_BT_BLUEZ) << "Using battery service via GattService1 interface";
530 gattBatteryService = true;
531 }
532 setupServicePrivate(service->primary()
533 ? QLowEnergyService::PrimaryService
534 : QLowEnergyService::IncludedService,
535 QBluetoothUuid(service->uUID()), it.key().path());
536 }
537 }
538 }
539
540 if (!gattBatteryService && !batteryServicePath.isEmpty()) {
541 setupServicePrivate(QLowEnergyService::PrimaryService,
542 QBluetoothUuid::ServiceClassUuid::BatteryService,
543 batteryServicePath, true);
544 }
545
546 setState(QLowEnergyController::DiscoveredState);
547 emit q->discoveryFinished();
548}
549
550void QLowEnergyControllerPrivateBluezDBus::discoverBatteryServiceDetails(
551 GattService &dbusData, QSharedPointer<QLowEnergyServicePrivate> serviceData)
552{
553 // This process exists to work around the fact that Battery services (0x180f)
554 // are not mapped as generic services but use the Battery1 interface.
555 // Artificial chararacteristics and descriptors are created to emulate the generic behavior.
556
557 auto batteryService = QSharedPointer<OrgBluezBattery1Interface>::create(
558 QStringLiteral("org.bluez"), arguments&: dbusData.servicePath,
559 arguments: QDBusConnection::systemBus());
560 dbusData.batteryInterface = batteryService;
561
562 serviceData->startHandle = runningHandle++; //service start handle
563
564 // Create BatteryLevel char
565 QLowEnergyHandle indexHandle = runningHandle++; // char handle index
566 QLowEnergyServicePrivate::CharData charData;
567
568 charData.valueHandle = runningHandle++;
569 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Read);
570 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Notify);
571 charData.uuid = QBluetoothUuid::CharacteristicType::BatteryLevel;
572 charData.value = QByteArray(1, char(batteryService->percentage()));
573
574 // Create the descriptors for the BatteryLevel
575 // They are hardcoded although CCC may change
576 QLowEnergyServicePrivate::DescData descData;
577 QLowEnergyHandle descriptorHandle = runningHandle++;
578 descData.uuid = QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration;
579 descData.value = QByteArray::fromHex(hexEncoded: "0000"); // all configs off
580 charData.descriptorList.insert(key: descriptorHandle, value: descData);
581
582 descriptorHandle = runningHandle++;
583 descData.uuid = QBluetoothUuid::DescriptorType::CharacteristicPresentationFormat;
584 //for details see Characteristic Presentation Format Vol3, Part G 3.3.3.5
585 // unsigend 8 bit, exp=1, org.bluetooth.unit.percentage, namespace & description
586 // bit order: little endian
587 descData.value = QByteArray::fromHex(hexEncoded: "0400ad27011131");
588 charData.descriptorList.insert(key: descriptorHandle, value: descData);
589
590 descriptorHandle = runningHandle++;
591 descData.uuid = QBluetoothUuid::DescriptorType::ReportReference;
592 descData.value = QByteArray::fromHex(hexEncoded: "0401");
593 charData.descriptorList.insert(key: descriptorHandle, value: descData);
594
595 serviceData->characteristicList[indexHandle] = charData;
596 serviceData->endHandle = runningHandle++;
597
598 serviceData->setState(QLowEnergyService::RemoteServiceDiscovered);
599}
600
601void QLowEnergyControllerPrivateBluezDBus::executeClose(QLowEnergyController::Error newError)
602{
603 const bool emitDisconnect = disconnectSignalRequired;
604
605 resetController();
606 if (newError != QLowEnergyController::NoError)
607 setError(newError);
608
609 setState(QLowEnergyController::UnconnectedState);
610 if (emitDisconnect) {
611 Q_Q(QLowEnergyController);
612 emit q->disconnected();
613 }
614}
615
616void QLowEnergyControllerPrivateBluezDBus::discoverServiceDetails(
617 const QBluetoothUuid &service, QLowEnergyService::DiscoveryMode mode)
618{
619 if (!serviceList.contains(key: service) || !dbusServices.contains(key: service)) {
620 qCWarning(QT_BT_BLUEZ) << "Discovery of unknown service" << service.toString()
621 << "not possible";
622 return;
623 }
624
625 //clear existing service data and run new discovery
626 QSharedPointer<QLowEnergyServicePrivate> serviceData = serviceList.value(key: service);
627 serviceData->characteristicList.clear();
628
629 GattService &dbusData = dbusServices[service];
630 dbusData.characteristics.clear();
631
632 if (dbusData.hasBatteryService) {
633 qCDebug(QT_BT_BLUEZ) << "Triggering Battery1 service discovery on " << dbusData.servicePath;
634 discoverBatteryServiceDetails(dbusData, serviceData);
635 return;
636 }
637
638 QDBusPendingReply<ManagedObjectList> reply = managerBluez->GetManagedObjects();
639 reply.waitForFinished();
640 if (reply.isError()) {
641 qCWarning(QT_BT_BLUEZ) << "Cannot discover services";
642 setError(QLowEnergyController::UnknownError);
643 setState(QLowEnergyController::DiscoveredState);
644 return;
645 }
646
647 const ManagedObjectList managedObjectList = reply.value();
648 for (ManagedObjectList::const_iterator it = managedObjectList.constBegin(); it != managedObjectList.constEnd(); ++it) {
649 const InterfaceList &ifaceList = it.value();
650 if (!it.key().path().startsWith(s: dbusData.servicePath))
651 continue;
652
653 for (InterfaceList::const_iterator jt = ifaceList.constBegin(); jt != ifaceList.constEnd(); ++jt) {
654 const QString &iface = jt.key();
655 if (iface == QStringLiteral("org.bluez.GattCharacteristic1")) {
656 auto charInterface = QSharedPointer<OrgBluezGattCharacteristic1Interface>::create(
657 QStringLiteral("org.bluez"), arguments: it.key().path(),
658 arguments: QDBusConnection::systemBus());
659 GattCharacteristic dbusCharData;
660 dbusCharData.characteristic = charInterface;
661 dbusData.characteristics.append(t: dbusCharData);
662 } else if (iface == QStringLiteral("org.bluez.GattDescriptor1")) {
663 auto descInterface = QSharedPointer<OrgBluezGattDescriptor1Interface>::create(
664 QStringLiteral("org.bluez"), arguments: it.key().path(),
665 arguments: QDBusConnection::systemBus());
666 bool found = false;
667 for (GattCharacteristic &dbusCharData : dbusData.characteristics) {
668 if (!descInterface->path().startsWith(
669 s: dbusCharData.characteristic->path()))
670 continue;
671
672 found = true;
673 dbusCharData.descriptors.append(t: descInterface);
674 break;
675 }
676
677 Q_ASSERT(found);
678 if (!found)
679 qCWarning(QT_BT_BLUEZ) << "Descriptor discovery error";
680 }
681 }
682 }
683
684 //populate servicePrivate based on dbus data
685 serviceData->startHandle = runningHandle++;
686 for (GattCharacteristic &dbusChar : dbusData.characteristics) {
687 const QLowEnergyHandle indexHandle = runningHandle++;
688 QLowEnergyServicePrivate::CharData charData;
689
690 // characteristic data
691 charData.valueHandle = runningHandle++;
692 const QStringList properties = dbusChar.characteristic->flags();
693
694 for (const auto &entry : properties) {
695 if (entry == QStringLiteral("broadcast"))
696 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Broadcasting, on: true);
697 else if (entry == QStringLiteral("read"))
698 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Read, on: true);
699 else if (entry == QStringLiteral("write-without-response"))
700 charData.properties.setFlag(flag: QLowEnergyCharacteristic::WriteNoResponse, on: true);
701 else if (entry == QStringLiteral("write"))
702 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Write, on: true);
703 else if (entry == QStringLiteral("notify"))
704 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Notify, on: true);
705 else if (entry == QStringLiteral("indicate"))
706 charData.properties.setFlag(flag: QLowEnergyCharacteristic::Indicate, on: true);
707 else if (entry == QStringLiteral("authenticated-signed-writes"))
708 charData.properties.setFlag(flag: QLowEnergyCharacteristic::WriteSigned, on: true);
709 else if (entry == QStringLiteral("reliable-write"))
710 charData.properties.setFlag(flag: QLowEnergyCharacteristic::ExtendedProperty, on: true);
711 else if (entry == QStringLiteral("writable-auxiliaries"))
712 charData.properties.setFlag(flag: QLowEnergyCharacteristic::ExtendedProperty, on: true);
713 //all others ignored - not relevant for this API
714 }
715
716 charData.uuid = QBluetoothUuid(dbusChar.characteristic->uUID());
717
718 // schedule read for initial char value
719 if (mode == QLowEnergyService::FullDiscovery
720 && charData.properties.testFlag(flag: QLowEnergyCharacteristic::Read)) {
721 GattJob job;
722 job.flags = GattJob::JobFlags({GattJob::CharRead, GattJob::ServiceDiscovery});
723 job.service = serviceData;
724 job.handle = indexHandle;
725 jobs.append(t: job);
726 }
727
728 // descriptor data
729 for (const auto &descEntry : std::as_const(t&: dbusChar.descriptors)) {
730 const QLowEnergyHandle descriptorHandle = runningHandle++;
731 QLowEnergyServicePrivate::DescData descData;
732 descData.uuid = QBluetoothUuid(descEntry->uUID());
733 charData.descriptorList.insert(key: descriptorHandle, value: descData);
734
735
736 // every ClientCharacteristicConfiguration needs to track property changes
737 if (descData.uuid
738 == QBluetoothUuid(QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration)) {
739 dbusChar.charMonitor = QSharedPointer<OrgFreedesktopDBusPropertiesInterfaceBluetooth>::create(
740 QStringLiteral("org.bluez"),
741 arguments: dbusChar.characteristic->path(),
742 arguments: QDBusConnection::systemBus(), arguments: this);
743 connect(sender: dbusChar.charMonitor.data(), signal: &OrgFreedesktopDBusPropertiesInterfaceBluetooth::PropertiesChanged,
744 context: this, slot: [this, indexHandle](const QString &interface, const QVariantMap &changedProperties,
745 const QStringList &removedProperties) {
746
747 characteristicPropertiesChanged(charHandle: indexHandle, interface,
748 changedProperties, removedProperties);
749 });
750 }
751
752 if (mode == QLowEnergyService::FullDiscovery) {
753 // schedule read for initial descriptor value
754 GattJob job;
755 job.flags = GattJob::JobFlags({ GattJob::DescRead, GattJob::ServiceDiscovery });
756 job.service = serviceData;
757 job.handle = descriptorHandle;
758 jobs.append(t: job);
759 }
760 }
761
762 serviceData->characteristicList[indexHandle] = charData;
763 }
764
765 serviceData->endHandle = runningHandle++;
766
767 // last job is last step of service discovery
768 if (!jobs.isEmpty()) {
769 GattJob &lastJob = jobs.last();
770 lastJob.flags.setFlag(flag: GattJob::LastServiceDiscovery, on: true);
771 } else {
772 serviceData->setState(QLowEnergyService::RemoteServiceDiscovered);
773 }
774
775 scheduleNextJob();
776}
777
778void QLowEnergyControllerPrivateBluezDBus::prepareNextJob()
779{
780 jobs.takeFirst(); // finish last job
781 jobPending = false;
782
783 scheduleNextJob(); // continue with next job - if available
784}
785
786void QLowEnergyControllerPrivateBluezDBus::onCharReadFinished(QDBusPendingCallWatcher *call)
787{
788 if (!jobPending || jobs.isEmpty()) {
789 // this may happen when service disconnects before dbus watcher returns later on
790 qCWarning(QT_BT_BLUEZ) << "Aborting onCharReadFinished due to disconnect";
791 Q_ASSERT(state == QLowEnergyController::UnconnectedState);
792 return;
793 }
794
795 const GattJob nextJob = jobs.constFirst();
796 Q_ASSERT(nextJob.flags.testFlag(GattJob::CharRead));
797
798 QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(handle: nextJob.handle);
799 if (service.isNull() || !dbusServices.contains(key: service->uuid)) {
800 qCWarning(QT_BT_BLUEZ) << "onCharReadFinished: Invalid GATT job. Skipping.";
801 call->deleteLater();
802 prepareNextJob();
803 return;
804 }
805 const QLowEnergyServicePrivate::CharData &charData =
806 service->characteristicList.value(key: nextJob.handle);
807
808 bool isServiceDiscovery = nextJob.flags.testFlag(flag: GattJob::ServiceDiscovery);
809 QDBusPendingReply<QByteArray> reply = *call;
810 if (reply.isError()) {
811 qCWarning(QT_BT_BLUEZ) << "Cannot initiate reading of" << charData.uuid
812 << "of service" << service->uuid
813 << reply.error().name() << reply.error().message();
814 if (!isServiceDiscovery)
815 service->setError(QLowEnergyService::CharacteristicReadError);
816 } else {
817 qCDebug(QT_BT_BLUEZ) << "Read Char:" << charData.uuid << reply.value().toHex();
818 if (charData.properties.testFlag(flag: QLowEnergyCharacteristic::Read))
819 updateValueOfCharacteristic(charHandle: nextJob.handle, value: reply.value(), appendValue: false);
820
821 if (isServiceDiscovery) {
822 if (nextJob.flags.testFlag(flag: GattJob::LastServiceDiscovery))
823 service->setState(QLowEnergyService::RemoteServiceDiscovered);
824 } else {
825 QLowEnergyCharacteristic ch(service, nextJob.handle);
826 emit service->characteristicRead(info: ch, value: reply.value());
827 }
828 }
829
830 call->deleteLater();
831 prepareNextJob();
832}
833
834void QLowEnergyControllerPrivateBluezDBus::onDescReadFinished(QDBusPendingCallWatcher *call)
835{
836 if (!jobPending || jobs.isEmpty()) {
837 // this may happen when service disconnects before dbus watcher returns later on
838 qCWarning(QT_BT_BLUEZ) << "Aborting onDescReadFinished due to disconnect";
839 Q_ASSERT(state == QLowEnergyController::UnconnectedState);
840 return;
841 }
842
843 const GattJob nextJob = jobs.constFirst();
844 Q_ASSERT(nextJob.flags.testFlag(GattJob::DescRead));
845
846 QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(handle: nextJob.handle);
847 if (service.isNull() || !dbusServices.contains(key: service->uuid)) {
848 qCWarning(QT_BT_BLUEZ) << "onDescReadFinished: Invalid GATT job. Skipping.";
849 call->deleteLater();
850 prepareNextJob();
851 return;
852 }
853
854 QLowEnergyCharacteristic ch = characteristicForHandle(handle: nextJob.handle);
855 if (!ch.isValid()) {
856 qCWarning(QT_BT_BLUEZ) << "Cannot find char for desc read (onDescReadFinished 1).";
857 call->deleteLater();
858 prepareNextJob();
859 return;
860 }
861
862 const QLowEnergyServicePrivate::CharData &charData =
863 service->characteristicList.value(key: ch.attributeHandle());
864
865 if (!charData.descriptorList.contains(key: nextJob.handle)) {
866 qCWarning(QT_BT_BLUEZ) << "Cannot find descriptor (onDescReadFinished 2).";
867 call->deleteLater();
868 prepareNextJob();
869 return;
870 }
871
872 bool isServiceDiscovery = nextJob.flags.testFlag(flag: GattJob::ServiceDiscovery);
873
874 QDBusPendingReply<QByteArray> reply = *call;
875 if (reply.isError()) {
876 qCWarning(QT_BT_BLUEZ) << "Cannot read descriptor (onDescReadFinished 3): "
877 << charData.descriptorList[nextJob.handle].uuid
878 << charData.uuid
879 << reply.error().name() << reply.error().message();
880 if (!isServiceDiscovery)
881 service->setError(QLowEnergyService::DescriptorReadError);
882 } else {
883 qCDebug(QT_BT_BLUEZ) << "Read Desc:" << reply.value();
884 updateValueOfDescriptor(charHandle: ch.attributeHandle(), descriptorHandle: nextJob.handle, value: reply.value(), appendValue: false);
885
886 if (isServiceDiscovery) {
887 if (nextJob.flags.testFlag(flag: GattJob::LastServiceDiscovery))
888 service->setState(QLowEnergyService::RemoteServiceDiscovered);
889 } else {
890 QLowEnergyDescriptor desc(service, ch.attributeHandle(), nextJob.handle);
891 emit service->descriptorRead(info: desc, value: reply.value());
892 }
893 }
894
895 call->deleteLater();
896 prepareNextJob();
897}
898
899void QLowEnergyControllerPrivateBluezDBus::onCharWriteFinished(QDBusPendingCallWatcher *call)
900{
901 if (!jobPending || jobs.isEmpty()) {
902 // this may happen when service disconnects before dbus watcher returns later on
903 qCWarning(QT_BT_BLUEZ) << "Aborting onCharWriteFinished due to disconnect";
904 Q_ASSERT(state == QLowEnergyController::UnconnectedState);
905 return;
906 }
907
908 const GattJob nextJob = jobs.constFirst();
909 Q_ASSERT(nextJob.flags.testFlag(GattJob::CharWrite));
910
911 QSharedPointer<QLowEnergyServicePrivate> service = nextJob.service;
912 if (!dbusServices.contains(key: service->uuid)) {
913 qCWarning(QT_BT_BLUEZ) << "onCharWriteFinished: Invalid GATT job. Skipping.";
914 call->deleteLater();
915 prepareNextJob();
916 return;
917 }
918
919 const QLowEnergyServicePrivate::CharData &charData =
920 service->characteristicList.value(key: nextJob.handle);
921
922 QDBusPendingReply<> reply = *call;
923 if (reply.isError()) {
924 qCWarning(QT_BT_BLUEZ) << "Cannot initiate writing of" << charData.uuid
925 << "of service" << service->uuid
926 << reply.error().name() << reply.error().message();
927 service->setError(QLowEnergyService::CharacteristicWriteError);
928 } else {
929 if (charData.properties.testFlag(flag: QLowEnergyCharacteristic::Read))
930 updateValueOfCharacteristic(charHandle: nextJob.handle, value: nextJob.value, appendValue: false);
931
932 QLowEnergyCharacteristic ch(service, nextJob.handle);
933 // write without response implies zero feedback
934 if (nextJob.writeMode == QLowEnergyService::WriteWithResponse) {
935 qCDebug(QT_BT_BLUEZ) << "Written Char:" << charData.uuid << nextJob.value.toHex();
936 emit service->characteristicWritten(characteristic: ch, newValue: nextJob.value);
937 }
938 }
939
940 call->deleteLater();
941 prepareNextJob();
942}
943
944void QLowEnergyControllerPrivateBluezDBus::onDescWriteFinished(QDBusPendingCallWatcher *call)
945{
946 if (!jobPending || jobs.isEmpty()) {
947 // this may happen when service disconnects before dbus watcher returns later on
948 qCWarning(QT_BT_BLUEZ) << "Aborting onDescWriteFinished due to disconnect";
949 Q_ASSERT(state == QLowEnergyController::UnconnectedState);
950 return;
951 }
952
953 const GattJob nextJob = jobs.constFirst();
954 Q_ASSERT(nextJob.flags.testFlag(GattJob::DescWrite));
955
956 QSharedPointer<QLowEnergyServicePrivate> service = nextJob.service;
957 if (!dbusServices.contains(key: service->uuid)) {
958 qCWarning(QT_BT_BLUEZ) << "onDescWriteFinished: Invalid GATT job. Skipping.";
959 call->deleteLater();
960 prepareNextJob();
961 return;
962 }
963
964 const QLowEnergyCharacteristic associatedChar = characteristicForHandle(handle: nextJob.handle);
965 const QLowEnergyDescriptor descriptor = descriptorForHandle(handle: nextJob.handle);
966 if (!associatedChar.isValid() || !descriptor.isValid()) {
967 qCWarning(QT_BT_BLUEZ) << "onDescWriteFinished: Cannot find associated char/desc: "
968 << associatedChar.isValid();
969 call->deleteLater();
970 prepareNextJob();
971 return;
972 }
973
974 QDBusPendingReply<> reply = *call;
975 if (reply.isError()) {
976 qCWarning(QT_BT_BLUEZ) << "Cannot initiate writing of" << descriptor.uuid()
977 << "of char" << associatedChar.uuid()
978 << "of service" << service->uuid
979 << reply.error().name() << reply.error().message();
980 service->setError(QLowEnergyService::DescriptorWriteError);
981 } else {
982 qCDebug(QT_BT_BLUEZ) << "Write Desc:" << descriptor.uuid() << nextJob.value.toHex();
983 updateValueOfDescriptor(charHandle: associatedChar.attributeHandle(), descriptorHandle: nextJob.handle,
984 value: nextJob.value, appendValue: false);
985 emit service->descriptorWritten(descriptor, newValue: nextJob.value);
986 }
987
988 call->deleteLater();
989 prepareNextJob();
990}
991
992void QLowEnergyControllerPrivateBluezDBus::scheduleNextJob()
993{
994 if (jobPending || jobs.isEmpty())
995 return;
996
997 jobPending = true;
998
999 const GattJob nextJob = jobs.constFirst();
1000 QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(handle: nextJob.handle);
1001 if (service.isNull() || !dbusServices.contains(key: service->uuid)) {
1002 qCWarning(QT_BT_BLUEZ) << "Invalid GATT job (scheduleNextJob). Skipping.";
1003 prepareNextJob();
1004 return;
1005 }
1006
1007 const GattService &dbusServiceData = dbusServices[service->uuid];
1008
1009 if (nextJob.flags.testFlag(flag: GattJob::CharRead)) {
1010 // characteristic reading ***************************************
1011 if (!service->characteristicList.contains(key: nextJob.handle)) {
1012 qCWarning(QT_BT_BLUEZ) << "Invalid Char handle when reading. Skipping.";
1013 prepareNextJob();
1014 return;
1015 }
1016
1017 const QLowEnergyServicePrivate::CharData &charData =
1018 service->characteristicList.value(key: nextJob.handle);
1019 bool foundChar = false;
1020 for (const auto &gattChar : std::as_const(t: dbusServiceData.characteristics)) {
1021 if (charData.uuid != QBluetoothUuid(gattChar.characteristic->uUID()))
1022 continue;
1023
1024 QDBusPendingReply<QByteArray> reply = gattChar.characteristic->ReadValue(options: QVariantMap());
1025 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
1026 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished,
1027 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::onCharReadFinished);
1028
1029 foundChar = true;
1030 break;
1031 }
1032
1033 if (!foundChar) {
1034 qCWarning(QT_BT_BLUEZ) << "Cannot find char for reading. Skipping.";
1035 prepareNextJob();
1036 return;
1037 }
1038 } else if (nextJob.flags.testFlag(flag: GattJob::CharWrite)) {
1039 // characteristic writing ***************************************
1040 if (!service->characteristicList.contains(key: nextJob.handle)) {
1041 qCWarning(QT_BT_BLUEZ) << "Invalid Char handle when writing. Skipping.";
1042 prepareNextJob();
1043 return;
1044 }
1045
1046 const QLowEnergyServicePrivate::CharData &charData =
1047 service->characteristicList.value(key: nextJob.handle);
1048 bool foundChar = false;
1049 for (const auto &gattChar : std::as_const(t: dbusServiceData.characteristics)) {
1050 if (charData.uuid != QBluetoothUuid(gattChar.characteristic->uUID()))
1051 continue;
1052
1053 QVariantMap options;
1054 // The "type" option only works with BlueZ >= 5.50, older versions always write with response
1055 options[QStringLiteral("type")] = nextJob.writeMode == QLowEnergyService::WriteWithoutResponse ?
1056 QStringLiteral("command") : QStringLiteral("request");
1057 QDBusPendingReply<> reply = gattChar.characteristic->WriteValue(value: nextJob.value, options);
1058
1059 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
1060 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished,
1061 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::onCharWriteFinished);
1062
1063 foundChar = true;
1064 break;
1065 }
1066
1067 if (!foundChar) {
1068 qCWarning(QT_BT_BLUEZ) << "Cannot find char for writing. Skipping.";
1069 prepareNextJob();
1070 return;
1071 }
1072 } else if (nextJob.flags.testFlag(flag: GattJob::DescRead)) {
1073 // descriptor reading ***************************************
1074 QLowEnergyCharacteristic ch = characteristicForHandle(handle: nextJob.handle);
1075 if (!ch.isValid()) {
1076 qCWarning(QT_BT_BLUEZ) << "Invalid GATT job (scheduleReadDesc 1). Skipping.";
1077 prepareNextJob();
1078 return;
1079 }
1080
1081 const QLowEnergyServicePrivate::CharData &charData =
1082 service->characteristicList.value(key: ch.attributeHandle());
1083 if (!charData.descriptorList.contains(key: nextJob.handle)) {
1084 qCWarning(QT_BT_BLUEZ) << "Invalid GATT job (scheduleReadDesc 2). Skipping.";
1085 prepareNextJob();
1086 return;
1087 }
1088
1089 const QBluetoothUuid descUuid = charData.descriptorList[nextJob.handle].uuid;
1090 bool foundDesc = false;
1091 for (const auto &gattChar : std::as_const(t: dbusServiceData.characteristics)) {
1092 if (charData.uuid != QBluetoothUuid(gattChar.characteristic->uUID()))
1093 continue;
1094
1095 for (const auto &gattDesc : std::as_const(t: gattChar.descriptors)) {
1096 if (descUuid != QBluetoothUuid(gattDesc->uUID()))
1097 continue;
1098
1099 QDBusPendingReply<QByteArray> reply = gattDesc->ReadValue(options: QVariantMap());
1100 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
1101 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished,
1102 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::onDescReadFinished);
1103 foundDesc = true;
1104 break;
1105 }
1106
1107 if (foundDesc)
1108 break;
1109 }
1110
1111 if (!foundDesc) {
1112 qCWarning(QT_BT_BLUEZ) << "Cannot find descriptor for reading. Skipping.";
1113 prepareNextJob();
1114 return;
1115 }
1116 } else if (nextJob.flags.testFlag(flag: GattJob::DescWrite)) {
1117 // descriptor writing ***************************************
1118 const QLowEnergyCharacteristic ch = characteristicForHandle(handle: nextJob.handle);
1119 if (!ch.isValid()) {
1120 qCWarning(QT_BT_BLUEZ) << "Invalid GATT job (scheduleWriteDesc 1). Skipping.";
1121 prepareNextJob();
1122 return;
1123 }
1124
1125 const QLowEnergyServicePrivate::CharData &charData =
1126 service->characteristicList.value(key: ch.attributeHandle());
1127 if (!charData.descriptorList.contains(key: nextJob.handle)) {
1128 qCWarning(QT_BT_BLUEZ) << "Invalid GATT job (scheduleWriteDesc 2). Skipping.";
1129 prepareNextJob();
1130 return;
1131 }
1132
1133 const QBluetoothUuid descUuid = charData.descriptorList[nextJob.handle].uuid;
1134 bool foundDesc = false;
1135 for (const auto &gattChar : std::as_const(t: dbusServiceData.characteristics)) {
1136 if (charData.uuid != QBluetoothUuid(gattChar.characteristic->uUID()))
1137 continue;
1138
1139 for (const auto &gattDesc : std::as_const(t: gattChar.descriptors)) {
1140 if (descUuid != QBluetoothUuid(gattDesc->uUID()))
1141 continue;
1142
1143 //notifications enabled via characteristics Start/StopNotify() functions
1144 //otherwise regular WriteValue() calls on descriptor interface
1145 if (descUuid == QBluetoothUuid(QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration)) {
1146 const QByteArray value = nextJob.value;
1147
1148 QDBusPendingReply<> reply;
1149 qCDebug(QT_BT_BLUEZ) << "Init CCC change to" << value.toHex()
1150 << charData.uuid << service->uuid;
1151 if (value == QByteArray::fromHex(hexEncoded: "0100") || value == QByteArray::fromHex(hexEncoded: "0200"))
1152 reply = gattChar.characteristic->StartNotify();
1153 else
1154 reply = gattChar.characteristic->StopNotify();
1155 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
1156 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished,
1157 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::onDescWriteFinished);
1158 } else {
1159 QDBusPendingReply<> reply = gattDesc->WriteValue(value: nextJob.value, options: QVariantMap());
1160 QDBusPendingCallWatcher* watcher = new QDBusPendingCallWatcher(reply, this);
1161 connect(sender: watcher, signal: &QDBusPendingCallWatcher::finished,
1162 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::onDescWriteFinished);
1163
1164 }
1165
1166 foundDesc = true;
1167 break;
1168 }
1169
1170 if (foundDesc)
1171 break;
1172 }
1173
1174 if (!foundDesc) {
1175 qCWarning(QT_BT_BLUEZ) << "Cannot find descriptor for writing. Skipping.";
1176 prepareNextJob();
1177 return;
1178 }
1179 } else {
1180 qCWarning(QT_BT_BLUEZ) << "Unknown gatt job type. Skipping.";
1181 prepareNextJob();
1182 }
1183}
1184
1185void QLowEnergyControllerPrivateBluezDBus::readCharacteristic(
1186 const QSharedPointer<QLowEnergyServicePrivate> service,
1187 const QLowEnergyHandle charHandle)
1188{
1189 Q_ASSERT(!service.isNull());
1190 if (!service->characteristicList.contains(key: charHandle)) {
1191 qCWarning(QT_BT_BLUEZ) << "Read characteristic does not belong to service"
1192 << service->uuid;
1193 return;
1194 }
1195
1196 const QLowEnergyServicePrivate::CharData &charDetails
1197 = service->characteristicList[charHandle];
1198 if (!(charDetails.properties & QLowEnergyCharacteristic::Read)) {
1199 // if this succeeds the device has a bug, char is advertised as
1200 // non-readable. We try to be permissive and let the remote
1201 // device answer to the read attempt
1202 qCWarning(QT_BT_BLUEZ) << "Reading non-readable char" << charHandle;
1203 }
1204
1205 const GattService &gattService = dbusServices[service->uuid];
1206 if (gattService.hasBatteryService && !gattService.batteryInterface.isNull()) {
1207 // Reread from dbus interface and write to local cache
1208 const QByteArray newValue(1, char(gattService.batteryInterface->percentage()));
1209 quint16 result = updateValueOfCharacteristic(charHandle, value: newValue, appendValue: false);
1210 if (result > 0) {
1211 QLowEnergyCharacteristic ch(service, charHandle);
1212 emit service->characteristicRead(info: ch, value: newValue);
1213 } else {
1214 service->setError(QLowEnergyService::CharacteristicReadError);
1215 }
1216 return;
1217 }
1218
1219 GattJob job;
1220 job.flags = GattJob::JobFlags({GattJob::CharRead});
1221 job.service = service;
1222 job.handle = charHandle;
1223 jobs.append(t: job);
1224
1225 scheduleNextJob();
1226}
1227
1228void QLowEnergyControllerPrivateBluezDBus::readDescriptor(
1229 const QSharedPointer<QLowEnergyServicePrivate> service,
1230 const QLowEnergyHandle charHandle,
1231 const QLowEnergyHandle descriptorHandle)
1232{
1233 Q_ASSERT(!service.isNull());
1234 if (!service->characteristicList.contains(key: charHandle))
1235 return;
1236
1237 const QLowEnergyServicePrivate::CharData &charDetails
1238 = service->characteristicList[charHandle];
1239 if (!charDetails.descriptorList.contains(key: descriptorHandle))
1240 return;
1241
1242 const GattService &gattService = dbusServices[service->uuid];
1243 if (gattService.hasBatteryService && !gattService.batteryInterface.isNull()) {
1244 auto descriptor = descriptorForHandle(handle: descriptorHandle);
1245 if (descriptor.isValid())
1246 emit service->descriptorRead(info: descriptor, value: descriptor.value());
1247 else
1248 service->setError(QLowEnergyService::DescriptorReadError);
1249
1250 return;
1251 }
1252
1253 GattJob job;
1254 job.flags = GattJob::JobFlags({GattJob::DescRead});
1255 job.service = service;
1256 job.handle = descriptorHandle;
1257 jobs.append(t: job);
1258
1259 scheduleNextJob();
1260}
1261
1262void QLowEnergyControllerPrivateBluezDBus::writeCharacteristic(
1263 const QSharedPointer<QLowEnergyServicePrivate> service,
1264 const QLowEnergyHandle charHandle,
1265 const QByteArray &newValue,
1266 QLowEnergyService::WriteMode writeMode)
1267{
1268 Q_ASSERT(!service.isNull());
1269 if (!service->characteristicList.contains(key: charHandle)) {
1270 qCWarning(QT_BT_BLUEZ) << "Write characteristic does not belong to service"
1271 << service->uuid;
1272 return;
1273 }
1274
1275 if (role == QLowEnergyController::CentralRole) {
1276 const GattService &gattService = dbusServices[service->uuid];
1277 if (gattService.hasBatteryService && !gattService.batteryInterface.isNull()) {
1278 //Battery1 interface is readonly
1279 service->setError(QLowEnergyService::CharacteristicWriteError);
1280 return;
1281 }
1282
1283
1284 GattJob job;
1285 job.flags = GattJob::JobFlags({GattJob::CharWrite});
1286 job.service = service;
1287 job.handle = charHandle;
1288 job.value = newValue;
1289 job.writeMode = writeMode;
1290 jobs.append(t: job);
1291
1292 scheduleNextJob();
1293 } else {
1294 // Peripheral role
1295 Q_ASSERT(peripheralApplication);
1296 if (!peripheralApplication->localCharacteristicWrite(handle: charHandle, value: newValue)) {
1297 qCWarning(QT_BT_BLUEZ) << "Characteristic write failed"
1298 << characteristicForHandle(handle: charHandle).uuid();
1299 service->setError(QLowEnergyService::CharacteristicWriteError);
1300 return;
1301 }
1302 QLowEnergyServicePrivate::CharData &charData = service->characteristicList[charHandle];
1303 charData.value = newValue;
1304 }
1305}
1306
1307void QLowEnergyControllerPrivateBluezDBus::writeDescriptor(
1308 const QSharedPointer<QLowEnergyServicePrivate> service,
1309 const QLowEnergyHandle charHandle,
1310 const QLowEnergyHandle descriptorHandle,
1311 const QByteArray &newValue)
1312{
1313 Q_ASSERT(!service.isNull());
1314 if (!service->characteristicList.contains(key: charHandle))
1315 return;
1316
1317 if (role == QLowEnergyController::CentralRole) {
1318 const GattService &gattService = dbusServices[service->uuid];
1319 if (gattService.hasBatteryService && !gattService.batteryInterface.isNull()) {
1320 auto descriptor = descriptorForHandle(handle: descriptorHandle);
1321 if (!descriptor.isValid())
1322 return;
1323
1324 if (descriptor.uuid() == QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration) {
1325 if (newValue == QByteArray::fromHex(hexEncoded: "0000")
1326 || newValue == QByteArray::fromHex(hexEncoded: "0100")
1327 || newValue == QByteArray::fromHex(hexEncoded: "0200")) {
1328 quint16 result = updateValueOfDescriptor(charHandle, descriptorHandle, value: newValue, appendValue: false);
1329 if (result > 0)
1330 emit service->descriptorWritten(descriptor, newValue);
1331 else
1332 emit service->setError(QLowEnergyService::DescriptorWriteError);
1333
1334 }
1335 } else {
1336 service->setError(QLowEnergyService::DescriptorWriteError);
1337 }
1338
1339 return;
1340 }
1341
1342 GattJob job;
1343 job.flags = GattJob::JobFlags({GattJob::DescWrite});
1344 job.service = service;
1345 job.handle = descriptorHandle;
1346 job.value = newValue;
1347 jobs.append(t: job);
1348
1349 scheduleNextJob();
1350 } else {
1351 // Peripheral role
1352 Q_ASSERT(peripheralApplication);
1353
1354 auto desc = descriptorForHandle(handle: descriptorHandle);
1355 if (desc.uuid() == QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration) {
1356 qCWarning(QT_BT_BLUEZ) << "CCCD write not supported in peripheral role";
1357 service->setError(QLowEnergyService::DescriptorWriteError);
1358 return;
1359 } else if (!peripheralApplication->localDescriptorWrite(handle: descriptorHandle, value: newValue)) {
1360 qCWarning(QT_BT_BLUEZ) << "Descriptor write failed" << desc.uuid();
1361 service->setError(QLowEnergyService::DescriptorWriteError);
1362 return;
1363 }
1364 service->characteristicList[charHandle].descriptorList[descriptorHandle].value = newValue;
1365 }
1366}
1367
1368void QLowEnergyControllerPrivateBluezDBus::startAdvertising(
1369 const QLowEnergyAdvertisingParameters &params,
1370 const QLowEnergyAdvertisingData &advertisingData,
1371 const QLowEnergyAdvertisingData &scanResponseData)
1372{
1373 error = QLowEnergyController::NoError;
1374 errorString.clear();
1375
1376 Q_ASSERT(peripheralApplication);
1377 Q_ASSERT(!adapterPathWithPeripheralSupport.isEmpty());
1378
1379 if (advertiser) {
1380 // Clear any previous advertiser in case advertising data has changed.
1381 // For clarity: this function is called only in 'Unconnected' state
1382 delete advertiser;
1383 advertiser = nullptr;
1384 }
1385 advertiser = new QLeDBusAdvertiser(params, advertisingData, scanResponseData,
1386 adapterPathWithPeripheralSupport, this);
1387 connect(sender: advertiser, signal: &QLeDBusAdvertiser::errorOccurred,
1388 context: this, slot: &QLowEnergyControllerPrivateBluezDBus::handleAdvertisingError);
1389
1390 setState(QLowEnergyController::AdvertisingState);
1391
1392 // First register the application to bluez if needed, and then start the advertisement.
1393 // The application registration may fail and is asynchronous => serialize the steps.
1394 // For clarity: advertisements can be used without any services, but registering such
1395 // application to Bluez would fail
1396 if (peripheralApplication->registrationNeeded())
1397 peripheralApplication->registerApplication();
1398 else
1399 advertiser->startAdvertising();
1400}
1401
1402void QLowEnergyControllerPrivateBluezDBus::stopAdvertising()
1403{
1404 // This function is called only in Advertising state
1405 setState(QLowEnergyController::UnconnectedState);
1406 if (advertiser) {
1407 advertiser->stopAdvertising();
1408 delete advertiser;
1409 advertiser = nullptr;
1410 }
1411}
1412
1413void QLowEnergyControllerPrivateBluezDBus::handlePeripheralApplicationRegistered()
1414{
1415 // Start the actual advertising now that the application is registered.
1416 // Check the state first in case user has called stopAdvertising() during
1417 // application registration
1418 if (advertiser && state == QLowEnergyController::AdvertisingState)
1419 advertiser->startAdvertising();
1420 else
1421 peripheralApplication->unregisterApplication();
1422}
1423
1424void QLowEnergyControllerPrivateBluezDBus::handlePeripheralCharacteristicValueUpdate(
1425 QLowEnergyHandle handle, const QByteArray& value)
1426{
1427 const auto characteristic = characteristicForHandle(handle);
1428 if (characteristic.d_ptr
1429 && updateValueOfCharacteristic(charHandle: handle, value, appendValue: false) == value.size()) {
1430 emit characteristic.d_ptr->characteristicChanged(characteristic, newValue: value);
1431 } else {
1432 qCWarning(QT_BT_BLUEZ) << "Remote characteristic write failed";
1433 }
1434}
1435
1436void QLowEnergyControllerPrivateBluezDBus::handlePeripheralDescriptorValueUpdate(
1437 QLowEnergyHandle characteristicHandle,
1438 QLowEnergyHandle descriptorHandle,
1439 const QByteArray& value)
1440{
1441 const auto descriptor = descriptorForHandle(handle: descriptorHandle);
1442 if (descriptor.d_ptr && updateValueOfDescriptor(
1443 charHandle: characteristicHandle, descriptorHandle, value, appendValue: false) == value.size()) {
1444 emit descriptor.d_ptr->descriptorWritten(descriptor, newValue: value);
1445 } else {
1446 qCWarning(QT_BT_BLUEZ) << "Remote descriptor write failed";
1447 }
1448}
1449
1450void QLowEnergyControllerPrivateBluezDBus::handlePeripheralRemoteDeviceChanged(
1451 const QBluetoothAddress& address,
1452 const QString& name,
1453 quint16 mtu)
1454{
1455 remoteDevice = address;
1456 remoteName = name;
1457 remoteMtu = mtu;
1458}
1459
1460void QLowEnergyControllerPrivateBluezDBus::handleAdvertisingError()
1461{
1462 Q_ASSERT(peripheralApplication);
1463 qCWarning(QT_BT_BLUEZ) << "An advertising error occurred";
1464 setError(QLowEnergyController::AdvertisingError);
1465 setState(QLowEnergyController::UnconnectedState);
1466 peripheralApplication->unregisterApplication();
1467}
1468
1469void QLowEnergyControllerPrivateBluezDBus::handlePeripheralApplicationError()
1470{
1471 qCWarning(QT_BT_BLUEZ) << "A Bluez peripheral application error occurred";
1472 setError(QLowEnergyController::UnknownError);
1473 setState(QLowEnergyController::UnconnectedState);
1474}
1475
1476void QLowEnergyControllerPrivateBluezDBus::handlePeripheralConnectivityChanged(bool connected)
1477{
1478 Q_Q(QLowEnergyController);
1479 qCDebug(QT_BT_BLUEZ) << "Peripheral application connected change to:" << connected;
1480 if (connected) {
1481 setState(QLowEnergyController::ConnectedState);
1482 } else {
1483 resetController();
1484 remoteDevice.clear();
1485 setState(QLowEnergyController::UnconnectedState);
1486 emit q->disconnected();
1487 }
1488}
1489
1490void QLowEnergyControllerPrivateBluezDBus::requestConnectionUpdate(
1491 const QLowEnergyConnectionParameters & /* params */)
1492{
1493 qCWarning(QT_BT_BLUEZ) << "Connection update requests not supported on Bluez DBus";
1494}
1495
1496void QLowEnergyControllerPrivateBluezDBus::addToGenericAttributeList(
1497 const QLowEnergyServiceData &serviceData,
1498 QLowEnergyHandle startHandle)
1499{
1500 Q_ASSERT(peripheralApplication);
1501 QSharedPointer<QLowEnergyServicePrivate> servicePrivate = serviceForHandle(handle: startHandle);
1502 if (servicePrivate.isNull())
1503 return;
1504 peripheralApplication->addService(serviceData, servicePrivate, serviceHandle: startHandle);
1505}
1506
1507int QLowEnergyControllerPrivateBluezDBus::mtu() const
1508{
1509 // currently only supported on peripheral role
1510 return remoteMtu;
1511}
1512
1513QT_END_NAMESPACE
1514
1515#include "moc_qlowenergycontroller_bluezdbus_p.cpp"
1516

source code of qtconnectivity/src/bluetooth/qlowenergycontroller_bluezdbus.cpp