1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
|
/****************************************************************************
**
** Copyright (C) 2013 Lauri Laanmets (Proekspert AS) <lauri.laanmets@eesti.ee>
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QLoggingCategory>
#include <QtCore/private/qjnihelpers_p.h>
#include <QtAndroidExtras/QAndroidJniEnvironment>
#include <QtAndroidExtras/QAndroidJniObject>
#include <QtBluetooth/QBluetoothLocalDevice>
#include <QtBluetooth/QBluetoothAddress>
#include "qbluetoothlocaldevice_p.h"
#include "android/localdevicebroadcastreceiver_p.h"
QT_BEGIN_NAMESPACE
Q_DECLARE_LOGGING_CATEGORY(QT_BT_ANDROID)
QBluetoothLocalDevicePrivate::QBluetoothLocalDevicePrivate(
QBluetoothLocalDevice *q, const QBluetoothAddress &address) :
q_ptr(q),
obj(0),
pendingHostModeTransition(false)
{
initialize(address);
receiver = new LocalDeviceBroadcastReceiver(q_ptr);
connect(receiver, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
this, SLOT(processHostModeChange(QBluetoothLocalDevice::HostMode)));
connect(receiver, SIGNAL(pairingStateChanged(QBluetoothAddress,
QBluetoothLocalDevice::Pairing)),
this, SLOT(processPairingStateChanged(QBluetoothAddress,
QBluetoothLocalDevice::Pairing)));
connect(receiver, SIGNAL(connectDeviceChanges(QBluetoothAddress, bool)),
this, SLOT(processConnectDeviceChanges(QBluetoothAddress, bool)));
connect(receiver, SIGNAL(pairingDisplayConfirmation(QBluetoothAddress, QString)),
this, SLOT(processDisplayConfirmation(QBluetoothAddress, QString)));
}
QBluetoothLocalDevicePrivate::~QBluetoothLocalDevicePrivate()
{
receiver->unregisterReceiver();
delete receiver;
delete obj;
}
QAndroidJniObject *QBluetoothLocalDevicePrivate::adapter()
{
return obj;
}
void QBluetoothLocalDevicePrivate::initialize(const QBluetoothAddress &address)
{
QAndroidJniEnvironment env;
QAndroidJniObject adapter = QAndroidJniObject::callStaticObjectMethod(
"android/bluetooth/BluetoothAdapter", "getDefaultAdapter",
"()Landroid/bluetooth/BluetoothAdapter;");
if (!adapter.isValid()) {
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
qCWarning(QT_BT_ANDROID) << "Device does not support Bluetooth";
return;
}
obj = new QAndroidJniObject(adapter);
if (!address.isNull()) {
const QString localAddress
= obj->callObjectMethod("getAddress", "()Ljava/lang/String;").toString();
if (localAddress != address.toString()) {
// passed address not local one -> invalid
delete obj;
obj = 0;
}
}
}
bool QBluetoothLocalDevicePrivate::isValid() const
{
return obj ? true : false;
}
void QBluetoothLocalDevicePrivate::processHostModeChange(QBluetoothLocalDevice::HostMode newMode)
{
if (!pendingHostModeTransition) {
// if not in transition -> pass data on
emit q_ptr->hostModeStateChanged(newMode);
return;
}
if (isValid() && newMode == QBluetoothLocalDevice::HostPoweredOff) {
bool success = (bool)obj->callMethod<jboolean>("enable", "()Z");
if (!success)
emit q_ptr->error(QBluetoothLocalDevice::UnknownError);
}
pendingHostModeTransition = false;
}
// Return -1 if address is not part of a pending pairing request
// Otherwise it returns the index of address in pendingPairings
int QBluetoothLocalDevicePrivate::pendingPairing(const QBluetoothAddress &address)
{
for (int i = 0; i < pendingPairings.count(); i++) {
if (pendingPairings.at(i).first == address)
return i;
}
return -1;
}
void QBluetoothLocalDevicePrivate::processPairingStateChanged(
const QBluetoothAddress &address, QBluetoothLocalDevice::Pairing pairing)
{
int index = pendingPairing(address);
if (index < 0)
return; // ignore unrelated pairing signals
QPair<QBluetoothAddress, bool> entry = pendingPairings.takeAt(index);
if ((entry.second && pairing == QBluetoothLocalDevice::Paired)
|| (!entry.second && pairing == QBluetoothLocalDevice::Unpaired)) {
emit q_ptr->pairingFinished(address, pairing);
} else {
emit q_ptr->error(QBluetoothLocalDevice::PairingError);
}
}
void QBluetoothLocalDevicePrivate::processConnectDeviceChanges(const QBluetoothAddress &address,
bool isConnectEvent)
{
int index = -1;
for (int i = 0; i < connectedDevices.count(); i++) {
if (connectedDevices.at(i) == address) {
index = i;
break;
}
}
if (isConnectEvent) { // connect event
if (index >= 0)
return;
connectedDevices.append(address);
emit q_ptr->deviceConnected(address);
} else { // disconnect event
connectedDevices.removeAll(address);
emit q_ptr->deviceDisconnected(address);
}
}
void QBluetoothLocalDevicePrivate::processDisplayConfirmation(const QBluetoothAddress &address,
const QString &pin)
{
// only send pairing notification for pairing requests issued by
// this QBluetoothLocalDevice instance
if (pendingPairing(address) == -1)
return;
emit q_ptr->pairingDisplayConfirmation(address, pin);
emit q_ptr->pairingDisplayPinCode(address, pin);
}
QBluetoothLocalDevice::QBluetoothLocalDevice(QObject *parent) :
QObject(parent),
d_ptr(new QBluetoothLocalDevicePrivate(this, QBluetoothAddress()))
{
}
QBluetoothLocalDevice::QBluetoothLocalDevice(const QBluetoothAddress &address, QObject *parent) :
QObject(parent),
d_ptr(new QBluetoothLocalDevicePrivate(this, address))
{
}
QString QBluetoothLocalDevice::name() const
{
if (d_ptr->adapter())
return d_ptr->adapter()->callObjectMethod("getName", "()Ljava/lang/String;").toString();
return QString();
}
QBluetoothAddress QBluetoothLocalDevice::address() const
{
QString result;
if (d_ptr->adapter()) {
result
= d_ptr->adapter()->callObjectMethod("getAddress", "()Ljava/lang/String;").toString();
}
QBluetoothAddress address(result);
return address;
}
void QBluetoothLocalDevice::powerOn()
{
if (hostMode() != HostPoweredOff)
return;
if (d_ptr->adapter()) {
bool ret = (bool)d_ptr->adapter()->callMethod<jboolean>("enable", "()Z");
if (!ret)
emit error(QBluetoothLocalDevice::UnknownError);
}
}
void QBluetoothLocalDevice::setHostMode(QBluetoothLocalDevice::HostMode requestedMode)
{
QBluetoothLocalDevice::HostMode mode = requestedMode;
if (requestedMode == HostDiscoverableLimitedInquiry)
mode = HostDiscoverable;
if (mode == hostMode())
return;
if (mode == QBluetoothLocalDevice::HostPoweredOff) {
bool success = false;
if (d_ptr->adapter())
success = (bool)d_ptr->adapter()->callMethod<jboolean>("disable", "()Z");
if (!success)
emit error(QBluetoothLocalDevice::UnknownError);
} else if (mode == QBluetoothLocalDevice::HostConnectable) {
if (hostMode() == QBluetoothLocalDevice::HostDiscoverable) {
// cannot directly go from Discoverable to Connectable
// we need to go to disabled mode and enable once disabling came through
setHostMode(QBluetoothLocalDevice::HostPoweredOff);
d_ptr->pendingHostModeTransition = true;
} else {
QAndroidJniObject::callStaticMethod<void>(
"org/qtproject/qt5/android/bluetooth/QtBluetoothBroadcastReceiver",
"setConnectable");
}
} else if (mode == QBluetoothLocalDevice::HostDiscoverable
|| mode == QBluetoothLocalDevice::HostDiscoverableLimitedInquiry) {
QAndroidJniObject::callStaticMethod<void>(
"org/qtproject/qt5/android/bluetooth/QtBluetoothBroadcastReceiver", "setDiscoverable");
}
}
QBluetoothLocalDevice::HostMode QBluetoothLocalDevice::hostMode() const
{
if (d_ptr->adapter()) {
jint scanMode = d_ptr->adapter()->callMethod<jint>("getScanMode");
switch (scanMode) {
case 20: // BluetoothAdapter.SCAN_MODE_NONE
return HostPoweredOff;
case 21: // BluetoothAdapter.SCAN_MODE_CONNECTABLE
return HostConnectable;
case 23: // BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE
return HostDiscoverable;
default:
break;
}
}
return HostPoweredOff;
}
QList<QBluetoothHostInfo> QBluetoothLocalDevice::allDevices()
{
// Android only supports max of one device (so far)
QList<QBluetoothHostInfo> localDevices;
QAndroidJniEnvironment env;
jclass btAdapterClass = env->FindClass("android/bluetooth/BluetoothAdapter");
if (btAdapterClass == NULL) {
qCWarning(QT_BT_ANDROID)
<< "Native registration unable to find class android/bluetooth/BluetoothAdapter";
return localDevices;
}
jmethodID getDefaultAdapterID
= env->GetStaticMethodID(btAdapterClass, "getDefaultAdapter",
"()Landroid/bluetooth/BluetoothAdapter;");
if (getDefaultAdapterID == NULL) {
qCWarning(QT_BT_ANDROID)
<< "Native registration unable to get method ID: " \
"getDefaultAdapter of android/bluetooth/BluetoothAdapter";
env->DeleteLocalRef(btAdapterClass);
return localDevices;
}
jobject btAdapterObject = env->CallStaticObjectMethod(btAdapterClass, getDefaultAdapterID);
if (btAdapterObject == NULL) {
qCWarning(QT_BT_ANDROID) << "Device does not support Bluetooth";
env->DeleteLocalRef(btAdapterClass);
return localDevices;
}
QAndroidJniObject o(btAdapterObject);
if (o.isValid()) {
QBluetoothHostInfo info;
info.setName(o.callObjectMethod("getName", "()Ljava/lang/String;").toString());
info.setAddress(QBluetoothAddress(o.callObjectMethod("getAddress",
"()Ljava/lang/String;").toString()));
localDevices.append(info);
}
env->DeleteLocalRef(btAdapterObject);
env->DeleteLocalRef(btAdapterClass);
return localDevices;
}
void QBluetoothLocalDevice::requestPairing(const QBluetoothAddress &address, Pairing pairing)
{
if (address.isNull()) {
QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
Q_ARG(QBluetoothLocalDevice::Error,
QBluetoothLocalDevice::PairingError));
return;
}
const Pairing previousPairing = pairingStatus(address);
Pairing newPairing = pairing;
if (pairing == AuthorizedPaired) // AuthorizedPaired same as Paired on Android
newPairing = Paired;
if (previousPairing == newPairing) {
QMetaObject::invokeMethod(this, "pairingFinished", Qt::QueuedConnection,
Q_ARG(QBluetoothAddress, address),
Q_ARG(QBluetoothLocalDevice::Pairing, pairing));
return;
}
// BluetoothDevice::createBond() requires Android API 15
if (QtAndroidPrivate::androidSdkVersion() < 15 || !d_ptr->adapter()) {
qCWarning(QT_BT_ANDROID) << "Unable to pair: requires Android API 15+";
QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
Q_ARG(QBluetoothLocalDevice::Error,
QBluetoothLocalDevice::PairingError));
return;
}
QAndroidJniObject inputString = QAndroidJniObject::fromString(address.toString());
jboolean success = QAndroidJniObject::callStaticMethod<jboolean>(
"org/qtproject/qt5/android/bluetooth/QtBluetoothBroadcastReceiver",
"setPairingMode",
"(Ljava/lang/String;Z)Z",
inputString.object<jstring>(),
newPairing == Paired ? JNI_TRUE : JNI_FALSE);
if (!success) {
QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
Q_ARG(QBluetoothLocalDevice::Error,
QBluetoothLocalDevice::PairingError));
} else {
d_ptr->pendingPairings.append(qMakePair(address, newPairing == Paired ? true : false));
}
}
QBluetoothLocalDevice::Pairing QBluetoothLocalDevice::pairingStatus(
const QBluetoothAddress &address) const
{
if (address.isNull() || !d_ptr->adapter())
return Unpaired;
QAndroidJniObject inputString = QAndroidJniObject::fromString(address.toString());
QAndroidJniObject remoteDevice
= d_ptr->adapter()->callObjectMethod("getRemoteDevice",
"(Ljava/lang/String;)Landroid/bluetooth/BluetoothDevice;",
inputString.object<jstring>());
QAndroidJniEnvironment env;
if (env->ExceptionCheck()) {
env->ExceptionClear();
return Unpaired;
}
jint bondState = remoteDevice.callMethod<jint>("getBondState");
switch (bondState) {
case 12: // BluetoothDevice.BOND_BONDED
return Paired;
default:
break;
}
return Unpaired;
}
void QBluetoothLocalDevice::pairingConfirmation(bool confirmation)
{
if (!d_ptr->adapter())
return;
bool success = d_ptr->receiver->pairingConfirmation(confirmation);
if (!success)
emit error(PairingError);
}
QList<QBluetoothAddress> QBluetoothLocalDevice::connectedDevices() const
{
/*
* Android does not have an API to list all connected devices. We have to collect
* the information based on a few indicators.
*
* Primarily we detect connected devices by monitoring connect/disconnect signals.
* Unfortunately the list may only be complete after very long monitoring time.
* However there are some Android APIs which provide the list of connected devices
* for specific Bluetooth profiles. QtBluetoothBroadcastReceiver.getConnectedDevices()
* returns a few connections of common profiles. The returned list is not complete either
* but at least it can complement our already detected connections.
*/
QAndroidJniObject connectedDevices = QAndroidJniObject::callStaticObjectMethod(
"org/qtproject/qt5/android/bluetooth/QtBluetoothBroadcastReceiver",
"getConnectedDevices",
"()[Ljava/lang/String;");
if (!connectedDevices.isValid())
return d_ptr->connectedDevices;
jobjectArray connectedDevicesArray = connectedDevices.object<jobjectArray>();
if (!connectedDevicesArray)
return d_ptr->connectedDevices;
QAndroidJniEnvironment env;
QList<QBluetoothAddress> knownAddresses = d_ptr->connectedDevices;
QAndroidJniObject p;
jint size = env->GetArrayLength(connectedDevicesArray);
for (int i = 0; i < size; i++) {
p = env->GetObjectArrayElement(connectedDevicesArray, i);
QBluetoothAddress address(p.toString());
if (!address.isNull() && !knownAddresses.contains(address))
knownAddresses.append(address);
}
return knownAddresses;
}
QT_END_NAMESPACE
|