File: rfkill.cpp

package info (click to toggle)
bluez-qt 5.62.0-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 1,708 kB
  • sloc: cpp: 14,071; xml: 424; ansic: 318; sh: 22; makefile: 9
file content (262 lines) | stat: -rw-r--r-- 5,439 bytes parent folder | download
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
/*
 * BluezQt - Asynchronous Bluez wrapper library
 *
 * Copyright (C) 2015 David Rosca <nowrep@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) version 3, or any
 * later version accepted by the membership of KDE e.V. (or its
 * successor approved by the membership of KDE e.V.), which shall
 * act as a proxy defined in Section 6 of version 3 of the license.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "rfkill.h"
#include "debug.h"

#ifdef Q_OS_LINUX
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <stdint.h>
#endif

#include <QSocketNotifier>

namespace BluezQt
{

#ifdef Q_OS_LINUX
enum rfkill_type {
    RFKILL_TYPE_ALL = 0,
    RFKILL_TYPE_WLAN,
    RFKILL_TYPE_BLUETOOTH,
    RFKILL_TYPE_UWB,
    RFKILL_TYPE_WIMAX,
    RFKILL_TYPE_WWAN
};

enum rfkill_operation {
    RFKILL_OP_ADD = 0,
    RFKILL_OP_DEL,
    RFKILL_OP_CHANGE,
    RFKILL_OP_CHANGE_ALL
};

struct rfkill_event {
    quint32 idx;
    quint8 type;
    quint8 op;
    quint8 soft;
    quint8 hard;
};
#endif

Rfkill::Rfkill(QObject *parent)
    : QObject(parent)
    , m_readFd(-1)
    , m_writeFd(-1)
    , m_state(Unknown)
{
    init();
}

Rfkill::~Rfkill()
{
#ifdef Q_OS_LINUX
    if (m_readFd != -1) {
        ::close(m_readFd);
    }

    if (m_writeFd != -1) {
        ::close(m_writeFd);
    }
#endif
}

Rfkill::State Rfkill::state() const
{
    return m_state;
}

bool Rfkill::block()
{
    if (m_state == SoftBlocked || m_state == HardBlocked) {
        return true;
    }

    if (m_state != Unblocked) {
        return false;
    }

    return setSoftBlock(1);
}

bool Rfkill::unblock()
{
    if (m_state == Unblocked) {
        return true;
    }

    if (m_state != SoftBlocked) {
        return false;
    }

    return setSoftBlock(0);
}

void Rfkill::devReadyRead()
{
    State oldState = m_state;

    updateRfkillDevices();

    if (m_state != oldState) {
        Q_EMIT stateChanged(m_state);
    }
}

void Rfkill::init()
{
#ifdef Q_OS_LINUX
    m_readFd = ::open("/dev/rfkill", O_RDONLY | O_CLOEXEC);

    if (m_readFd == -1) {
        qCWarning(BLUEZQT) << "Cannot open /dev/rfkill for reading!";
        return;
    }

    if (::fcntl(m_readFd, F_SETFL, O_NONBLOCK) < 0) {
        ::close(m_readFd);
        m_readFd = -1;
        return;
    }

    updateRfkillDevices();

    QSocketNotifier *notifier = new QSocketNotifier(m_readFd, QSocketNotifier::Read, this);
    connect(notifier, &QSocketNotifier::activated, this, &Rfkill::devReadyRead);
#endif
}

bool Rfkill::openForWriting()
{
#ifndef Q_OS_LINUX
    return false;
#else
    if (m_writeFd != -1) {
        return true;
    }

    m_writeFd = ::open("/dev/rfkill", O_WRONLY | O_CLOEXEC);

    if (m_writeFd == -1) {
        qCWarning(BLUEZQT) << "Cannot open /dev/rfkill for writing!";
        return false;
    }

    if (::fcntl(m_writeFd, F_SETFL, O_NONBLOCK) < 0) {
        ::close(m_writeFd);
        m_writeFd = -1;
        return false;
    }

    return true;
#endif
}

#ifdef Q_OS_LINUX
static Rfkill::State getState(const rfkill_event &event)
{
    if (event.hard) {
        return Rfkill::HardBlocked;
    } else if (event.soft) {
        return Rfkill::SoftBlocked;
    }
    return Rfkill::Unblocked;
}
#endif

void Rfkill::updateRfkillDevices()
{
#ifdef Q_OS_LINUX
    if (m_readFd == -1) {
        return;
    }

    rfkill_event event;
    while (::read(m_readFd, &event, sizeof(event)) == sizeof(event)) {
        if (event.type != RFKILL_TYPE_BLUETOOTH) {
            continue;
        }

        switch (event.op) {
        case RFKILL_OP_ADD:
        case RFKILL_OP_CHANGE:
            m_devices[event.idx] = getState(event);
            break;

        case RFKILL_OP_DEL:
            m_devices.remove(event.idx);
            break;

        case RFKILL_OP_CHANGE_ALL:
            for (auto it = m_devices.begin(); it != m_devices.end(); ++it) {
                it.value() = getState(event);
            }
            break;

        default:
            break;
        }
    }

    // Update global state
    m_state = Unknown;

    for (State state : qAsConst(m_devices)) {
        Q_ASSERT(state != Unknown);

        if (m_state == Unknown) {
            m_state = state;
        } else if (state > m_state) {
            m_state = state;
        }
    }

    qCDebug(BLUEZQT) << "Rfkill global state changed:" << m_state;
#endif
}

bool Rfkill::setSoftBlock(quint8 soft)
{
#ifndef Q_OS_LINUX
    Q_UNUSED(soft)
    return false;
#else
    if (!openForWriting()) {
        return false;
    }

    rfkill_event event;
    ::memset(&event, 0, sizeof(event));
    event.op = RFKILL_OP_CHANGE_ALL;
    event.type = RFKILL_TYPE_BLUETOOTH;
    event.soft = soft;

    bool ret = ::write(m_writeFd, &event, sizeof(event)) == sizeof(event);
    qCDebug(BLUEZQT) << "Setting Rfkill soft block succeeded:" << ret;
    return ret;
#endif
}

} // namespace BluezQt