summaryrefslogtreecommitdiffstats
path: root/src/network/bearer/qnetworkconfigmanager_p.cpp
blob: de4445197e570199e41b531e791c8d309d00bcc6 (plain)
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
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qnetworkconfigmanager_p.h"
#include "qbearerplugin_p.h"

#include <QtCore/private/qfactoryloader_p.h>

#include <QtCore/qdebug.h>
#include <QtCore/qtimer.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qthread.h>
#include <QtCore/private/qcoreapplication_p.h>

#ifndef QT_NO_BEARERMANAGEMENT

QT_BEGIN_NAMESPACE

#ifndef QT_NO_LIBRARY
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
                          (QBearerEngineFactoryInterface_iid, QLatin1String("/bearer")))
#endif

QNetworkConfigurationManagerPrivate::QNetworkConfigurationManagerPrivate()
    : QObject(), pollTimer(0), bearerThread(0), mutex(QMutex::Recursive), forcedPolling(0), firstUpdate(true)
{
    qRegisterMetaType<QNetworkConfiguration>("QNetworkConfiguration");
    qRegisterMetaType<QNetworkConfigurationPrivatePointer>("QNetworkConfigurationPrivatePointer");
}

void QNetworkConfigurationManagerPrivate::initialize()
{
    //Two stage construction, because we only want to do this heavyweight work for the winner of the Q_GLOBAL_STATIC race.
    bearerThread = new QThread();
    bearerThread->moveToThread(QCoreApplicationPrivate::mainThread()); // because cleanup() is called in main thread context.
    moveToThread(bearerThread);
    bearerThread->start();
    updateConfigurations();
}

QNetworkConfigurationManagerPrivate::~QNetworkConfigurationManagerPrivate()
{
    QMutexLocker locker(&mutex);

    qDeleteAll(sessionEngines);
    if (bearerThread)
        bearerThread->quit();
}

void QNetworkConfigurationManagerPrivate::cleanup()
{
    QThread* thread = bearerThread;
    deleteLater();
    if(thread->wait(5000))
        delete thread;
}

QNetworkConfiguration QNetworkConfigurationManagerPrivate::defaultConfiguration() const
{
    QMutexLocker locker(&mutex);

    foreach (QBearerEngine *engine, sessionEngines) {
        QNetworkConfigurationPrivatePointer ptr = engine->defaultConfiguration();
        if (ptr) {
            QNetworkConfiguration config;
            config.d = ptr;
            return config;
        }
    }

    // Engines don't have a default configuration.

    // Return first active snap
    QNetworkConfigurationPrivatePointer defaultConfiguration;

    foreach (QBearerEngine *engine, sessionEngines) {
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator end;

        QMutexLocker locker(&engine->mutex);

        for (it = engine->snapConfigurations.begin(),
             end = engine->snapConfigurations.end(); it != end; ++it) {
            QNetworkConfigurationPrivatePointer ptr = it.value();

            QMutexLocker configLocker(&ptr->mutex);

            if ((ptr->state & QNetworkConfiguration::Active) == QNetworkConfiguration::Active) {
                QNetworkConfiguration config;
                config.d = ptr;
                return config;
            } else if (!defaultConfiguration) {
                if ((ptr->state & QNetworkConfiguration::Discovered) == QNetworkConfiguration::Discovered)
                    defaultConfiguration = ptr;
            }
        }
    }

    // No Active SNAPs return first Discovered SNAP.
    if (defaultConfiguration) {
        QNetworkConfiguration config;
        config.d = defaultConfiguration;
        return config;
    }

    /*
        No Active or Discovered SNAPs, find the perferred access point.
        The following priority order is used:

            1. Active Ethernet
            2. Active WLAN
            3. Active Other
            4. Discovered Ethernet
            5. Discovered WLAN
            6. Discovered Other
    */

    foreach (QBearerEngine *engine, sessionEngines) {
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator end;

        QMutexLocker locker(&engine->mutex);

        for (it = engine->accessPointConfigurations.begin(),
             end = engine->accessPointConfigurations.end(); it != end; ++it) {
            QNetworkConfigurationPrivatePointer ptr = it.value();

            QMutexLocker configLocker(&ptr->mutex);
            QNetworkConfiguration::BearerType bearerType = ptr->bearerType;

            if ((ptr->state & QNetworkConfiguration::Discovered) == QNetworkConfiguration::Discovered) {
                if (!defaultConfiguration) {
                    defaultConfiguration = ptr;
                } else {
                    QMutexLocker defaultConfigLocker(&defaultConfiguration->mutex);

                    if (defaultConfiguration->state == ptr->state) {
                        switch (defaultConfiguration->bearerType) {
                        case QNetworkConfiguration::BearerEthernet:
                            // do nothing
                            break;
                        case QNetworkConfiguration::BearerWLAN:
                            // Ethernet beats WLAN
                            defaultConfiguration = ptr;
                            break;
                        default:
                            // Ethernet and WLAN beats other
                            if (bearerType == QNetworkConfiguration::BearerEthernet ||
                                bearerType == QNetworkConfiguration::BearerWLAN) {
                                defaultConfiguration = ptr;
                            }
                        }
                    } else {
                        // active beats discovered
                        if ((defaultConfiguration->state & QNetworkConfiguration::Active) !=
                            QNetworkConfiguration::Active) {
                            defaultConfiguration = ptr;
                        }
                    }
                }
            }
        }
    }

    // No Active InternetAccessPoint return first Discovered InternetAccessPoint.
    if (defaultConfiguration) {
        QNetworkConfiguration config;
        config.d = defaultConfiguration;
        return config;
    }

    return QNetworkConfiguration();
}

QList<QNetworkConfiguration> QNetworkConfigurationManagerPrivate::allConfigurations(QNetworkConfiguration::StateFlags filter) const
{
    QList<QNetworkConfiguration> result;

    QMutexLocker locker(&mutex);

    foreach (QBearerEngine *engine, sessionEngines) {
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
        QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator end;

        QMutexLocker locker(&engine->mutex);

        //find all InternetAccessPoints
        for (it = engine->accessPointConfigurations.begin(),
             end = engine->accessPointConfigurations.end(); it != end; ++it) {
            QNetworkConfigurationPrivatePointer ptr = it.value();

            QMutexLocker configLocker(&ptr->mutex);

            if ((ptr->state & filter) == filter) {
                QNetworkConfiguration pt;
                pt.d = ptr;
                result << pt;
            }
        }

        //find all service networks
        for (it = engine->snapConfigurations.begin(),
             end = engine->snapConfigurations.end(); it != end; ++it) {
            QNetworkConfigurationPrivatePointer ptr = it.value();

            QMutexLocker configLocker(&ptr->mutex);

            if ((ptr->state & filter) == filter) {
                QNetworkConfiguration pt;
                pt.d = ptr;
                result << pt;
            }
        }
    }

    return result;
}

QNetworkConfiguration QNetworkConfigurationManagerPrivate::configurationFromIdentifier(const QString &identifier) const
{
    QNetworkConfiguration item;

    QMutexLocker locker(&mutex);

    foreach (QBearerEngine *engine, sessionEngines) {
        QMutexLocker locker(&engine->mutex);

        if (engine->accessPointConfigurations.contains(identifier))
            item.d = engine->accessPointConfigurations[identifier];
        else if (engine->snapConfigurations.contains(identifier))
            item.d = engine->snapConfigurations[identifier];
        else if (engine->userChoiceConfigurations.contains(identifier))
            item.d = engine->userChoiceConfigurations[identifier];
        else
            continue;

        return item;
    }

    return item;
}

bool QNetworkConfigurationManagerPrivate::isOnline() const
{
    QMutexLocker locker(&mutex);

    return !onlineConfigurations.isEmpty();
}

QNetworkConfigurationManager::Capabilities QNetworkConfigurationManagerPrivate::capabilities() const
{
    QMutexLocker locker(&mutex);

    QNetworkConfigurationManager::Capabilities capFlags;

    foreach (QBearerEngine *engine, sessionEngines)
        capFlags |= engine->capabilities();

    return capFlags;
}

void QNetworkConfigurationManagerPrivate::configurationAdded(QNetworkConfigurationPrivatePointer ptr)
{
    QMutexLocker locker(&mutex);

    if (!firstUpdate) {
        QNetworkConfiguration item;
        item.d = ptr;
        emit configurationAdded(item);
    }

    ptr->mutex.lock();
    if (ptr->state == QNetworkConfiguration::Active) {
        ptr->mutex.unlock();
        onlineConfigurations.insert(ptr->id);
        if (!firstUpdate && onlineConfigurations.count() == 1)
            emit onlineStateChanged(true);
    } else {
        ptr->mutex.unlock();
    }
}

void QNetworkConfigurationManagerPrivate::configurationRemoved(QNetworkConfigurationPrivatePointer ptr)
{
    QMutexLocker locker(&mutex);

    ptr->mutex.lock();
    ptr->isValid = false;
    ptr->mutex.unlock();

    if (!firstUpdate) {
        QNetworkConfiguration item;
        item.d = ptr;
        emit configurationRemoved(item);
    }

    onlineConfigurations.remove(ptr->id);
    if (!firstUpdate && onlineConfigurations.isEmpty())
        emit onlineStateChanged(false);
}

void QNetworkConfigurationManagerPrivate::configurationChanged(QNetworkConfigurationPrivatePointer ptr)
{
    QMutexLocker locker(&mutex);

    if (!firstUpdate) {
        QNetworkConfiguration item;
        item.d = ptr;
        emit configurationChanged(item);
    }

    bool previous = !onlineConfigurations.isEmpty();

    ptr->mutex.lock();
    if (ptr->state == QNetworkConfiguration::Active)
        onlineConfigurations.insert(ptr->id);
    else
        onlineConfigurations.remove(ptr->id);
    ptr->mutex.unlock();

    bool online = !onlineConfigurations.isEmpty();

    if (!firstUpdate && online != previous)
        emit onlineStateChanged(online);
}

void QNetworkConfigurationManagerPrivate::updateConfigurations()
{
    QMutexLocker locker(&mutex);

    if (firstUpdate) {
        if (qobject_cast<QBearerEngine *>(sender()))
            return;

        updating = false;

#ifndef QT_NO_LIBRARY
        QBearerEngine *generic = 0;

        QFactoryLoader *l = loader();
        foreach (const QString &key, l->keys()) {
            QBearerEnginePlugin *plugin = qobject_cast<QBearerEnginePlugin *>(l->instance(key));
            if (plugin) {
                QBearerEngine *engine = plugin->create(key);
                if (!engine)
                    continue;

                if (key == QLatin1String("generic"))
                    generic = engine;
                else
                    sessionEngines.append(engine);

                engine->moveToThread(bearerThread);

                connect(engine, SIGNAL(updateCompleted()),
                        this, SLOT(updateConfigurations()),
                        Qt::QueuedConnection);
                connect(engine, SIGNAL(configurationAdded(QNetworkConfigurationPrivatePointer)),
                        this, SLOT(configurationAdded(QNetworkConfigurationPrivatePointer)),
                        Qt::QueuedConnection);
                connect(engine, SIGNAL(configurationRemoved(QNetworkConfigurationPrivatePointer)),
                        this, SLOT(configurationRemoved(QNetworkConfigurationPrivatePointer)),
                        Qt::QueuedConnection);
                connect(engine, SIGNAL(configurationChanged(QNetworkConfigurationPrivatePointer)),
                        this, SLOT(configurationChanged(QNetworkConfigurationPrivatePointer)),
                        Qt::QueuedConnection);
            }
        }

        if (generic)
            sessionEngines.append(generic);
#endif // QT_NO_LIBRARY
    }

    QBearerEngine *engine = qobject_cast<QBearerEngine *>(sender());
    if (engine && !updatingEngines.isEmpty())
        updatingEngines.remove(engine);

    if (updating && updatingEngines.isEmpty()) {
        updating = false;
        emit configurationUpdateComplete();
    }

    if (engine && !pollingEngines.isEmpty()) {
        pollingEngines.remove(engine);
        if (pollingEngines.isEmpty())
            startPolling();
    }

    if (firstUpdate) {
        firstUpdate = false;
        QList<QBearerEngine*> enginesToInitialize = sessionEngines; //shallow copy the list in case it is modified when we unlock mutex
        locker.unlock();
        foreach (QBearerEngine* engine, enginesToInitialize) {
            QMetaObject::invokeMethod(engine, "initialize", Qt::BlockingQueuedConnection);
        }
    }
}

void QNetworkConfigurationManagerPrivate::performAsyncConfigurationUpdate()
{
    QMutexLocker locker(&mutex);

    if (sessionEngines.isEmpty()) {
        emit configurationUpdateComplete();
        return;
    }

    updating = true;

    foreach (QBearerEngine *engine, sessionEngines) {
        updatingEngines.insert(engine);
        QMetaObject::invokeMethod(engine, "requestUpdate");
    }
}

QList<QBearerEngine *> QNetworkConfigurationManagerPrivate::engines() const
{
    QMutexLocker locker(&mutex);

    return sessionEngines;
}

void QNetworkConfigurationManagerPrivate::startPolling()
{
    QMutexLocker locker(&mutex);

    if(!pollTimer) {
        pollTimer = new QTimer(this);
        pollTimer->setInterval(10000);
        pollTimer->setSingleShot(true);
        connect(pollTimer, SIGNAL(timeout()), this, SLOT(pollEngines()));
    }

    if(pollTimer->isActive())
        return;

    foreach (QBearerEngine *engine, sessionEngines) {
        if (engine->requiresPolling() && (forcedPolling || engine->configurationsInUse())) {
            pollTimer->start();
            break;
        }
    }
}

void QNetworkConfigurationManagerPrivate::pollEngines()
{
    QMutexLocker locker(&mutex);

    foreach (QBearerEngine *engine, sessionEngines) {
        if (engine->requiresPolling() && (forcedPolling || engine->configurationsInUse())) {
            pollingEngines.insert(engine);
            QMetaObject::invokeMethod(engine, "requestUpdate");
        }
    }
}

void QNetworkConfigurationManagerPrivate::enablePolling()
{
    QMutexLocker locker(&mutex);

    ++forcedPolling;

    if (forcedPolling == 1)
        QMetaObject::invokeMethod(this, "startPolling");
}

void QNetworkConfigurationManagerPrivate::disablePolling()
{
    QMutexLocker locker(&mutex);

    --forcedPolling;
}

QT_END_NAMESPACE

#endif // QT_NO_BEARERMANAGEMENT