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
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "osxbtdeviceinquiry_p.h"
#include "osxbtutility_p.h"
#include <QtCore/qloggingcategory.h>
#include <QtCore/qtimer.h>
#include <QtCore/qdebug.h>
#include <memory>
QT_USE_NAMESPACE
const uint8_t IOBlueoothInquiryLengthS = 15;
@implementation QT_MANGLE_NAMESPACE(OSXBTDeviceInquiry)
{
IOBluetoothDeviceInquiry *m_inquiry;
bool m_active;
DarwinBluetooth::DeviceInquiryDelegate *m_delegate;//C++ "delegate"
std::unique_ptr<QTimer> watchDog;
}
- (id)initWithDelegate:(DarwinBluetooth::DeviceInquiryDelegate *)delegate
{
if (self = [super init]) {
Q_ASSERT_X(delegate, Q_FUNC_INFO, "invalid device inquiry delegate (null)");
m_inquiry = [[IOBluetoothDeviceInquiry inquiryWithDelegate:self] retain];
if (m_inquiry) {
// Inquiry length is 15 seconds. Starting from macOS 10.15.7
// (the lowest version I was able to test on, though initially
// the problem was found on macOS 11, arm64 machine and then
// confirmed on macOS 12 Beta 4), it seems to be ignored,
// thus scan never stops. See -start for how we try to prevent
// this.
[m_inquiry setInquiryLength:IOBlueoothInquiryLengthS];
[m_inquiry setUpdateNewDeviceNames:NO];//Useless, disable!
m_delegate = delegate;
} else {
qCCritical(QT_BT_OSX) << "failed to create a device inquiry";
}
m_active = false;
}
return self;
}
- (void)dealloc
{
// Noop if m_inquiry is nil.
[m_inquiry setDelegate:nil];
if (m_active)
[m_inquiry stop];
[m_inquiry release];
[super dealloc];
}
- (bool)isActive
{
return m_active;
}
- (IOReturn)start
{
if (!m_inquiry)
return kIOReturnNoPower;
if (m_active)
return kIOReturnBusy;
m_active = true;
[m_inquiry clearFoundDevices];
const IOReturn result = [m_inquiry start];
if (result != kIOReturnSuccess) {
// QtBluetooth will probably convert an error into UnknownError,
// losing the actual information.
qCWarning(QT_BT_OSX) << "failed with IOKit error code:" << result;
m_active = false;
} else {
// Docs say it's 10 s. by default, we set it to 15 s. (see -initWithDelegate:),
// and it may fail to finish.
watchDog.reset(new QTimer);
watchDog->connect(watchDog.get(), &QTimer::timeout, watchDog.get(), [self]{
qCWarning(QT_BT_OSX, "Manually interrupting IOBluetoothDeviceInquiry");
[self stop];
});
watchDog->setSingleShot(true);
watchDog->setInterval(IOBlueoothInquiryLengthS * 2 * 1000); // Let's make it twice as long.
watchDog->start();
}
return result;
}
- (IOReturn)stop
{
if (!m_active)
return kIOReturnSuccess;
Q_ASSERT_X(m_inquiry, Q_FUNC_INFO, "active but nil inquiry");
return [m_inquiry stop];
}
- (void)deviceInquiryComplete:(IOBluetoothDeviceInquiry *)sender
error:(IOReturn)error aborted:(BOOL)aborted
{
if (!m_active)
return;
if (sender != m_inquiry) // Can never happen in the current version.
return;
Q_ASSERT_X(m_delegate, Q_FUNC_INFO, "invalid device inquiry delegate (null)");
if (error != kIOReturnSuccess && !aborted) {
// QtBluetooth has not too many error codes, 'UnknownError' is not really
// useful, report the actual error code here:
qCWarning(QT_BT_OSX) << "IOKit error code: " << error;
m_delegate->error(error);
// Let watchDog to stop it, calling -stop at timeout, otherwise,
// it looks like inquiry continues and keeps reporting new devices found.
} else {
// Either a normal completion or from a timer slot.
watchDog.reset();
m_active = false;
m_delegate->inquiryFinished();
}
}
- (void)deviceInquiryDeviceFound:(IOBluetoothDeviceInquiry *)sender
device:(IOBluetoothDevice *)device
{
if (sender != m_inquiry) // Can never happen in the current version.
return;
if (!m_active) {
// We are not expecting new device(s) to be found after we reported 'finished'.
qCWarning(QT_BT_OSX, "IOBluetooth device found after inquiry complete/interrupted");
return;
}
Q_ASSERT_X(m_delegate, Q_FUNC_INFO, "invalid device inquiry delegate (null)");
m_delegate->classicDeviceFound(device);
}
- (void)deviceInquiryStarted:(IOBluetoothDeviceInquiry *)sender
{
Q_UNUSED(sender);
}
@end
|
