1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt Mobility Components.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "dbuscomm_maemo_p.h"

    43 

    44 #include <iostream>

    45 using namespace std;

    46 

    47 QTM_BEGIN_NAMESPACE

    48 

    49 const QString DBusComm::positioningdService   = QString("com.nokia.positioningd.client");

    50 const QString DBusComm::positioningdPath      = QString("/com/nokia/positioningd/client");

    51 const QString DBusComm::positioningdInterface = QString("com.nokia.positioningd.client");

    52 

    53 DBusComm::DBusComm(QObject *parent) : QObject(parent), 

    54                                       minimumUpdateInterval(1000), 

    55                                       availablePositioningMethods(QGeoPositionInfoSource::AllPositioningMethods)

    56 {

    57 }

    58 

    59 

    60 int DBusComm::init()

    61 {

    62     if (!QDBusConnection::sessionBus().isConnected()) {

    63         cerr << "Cannot connect to the D-BUS session bus.\n";

    64         return -1;

    65     }

    66 

    67     // Application auto-start by dbus may take a while, so try

    68     // connecting a few times.

    69 

    70     int cnt = 6; 

    71     do {

    72         // cout << "Connecting to positioning daemon..." << endl;

    73         positioningdProxy = new QDBusInterface(positioningdService,

    74                                                positioningdPath,

    75                                                positioningdInterface,

    76                                                QDBusConnection::sessionBus());

    77         usleep(500000);

    78         cnt--;

    79     } while (cnt && (positioningdProxy->isValid() == false));

    80 

    81     if (positioningdProxy->isValid() == false) {

    82         cerr << "DBus connection to positioning daemon failed.\n";

    83         return -1;

    84     }

    85     serviceDisconnectWatcher = new QDBusServiceWatcher (positioningdService, QDBusConnection::sessionBus(), 

    86                                                         QDBusServiceWatcher::WatchForUnregistration, this);

    87     

    88     QObject::connect(serviceDisconnectWatcher, SIGNAL(serviceUnregistered ( const QString &)),

    89                      this,SLOT(onServiceDisconnect(const QString &)));

    90 

    91     serviceConnectWatcher = new QDBusServiceWatcher (positioningdService, QDBusConnection::sessionBus(), 

    92                                                      QDBusServiceWatcher::WatchForRegistration, this);

    93     

    94     QObject::connect(serviceConnectWatcher, SIGNAL(serviceRegistered ( const QString &)),

    95                      this,SLOT(onServiceConnect(const QString &)));

    96     

    97 

    98     if (createUniqueName() == false) { // set myService, myPath 

    99         return -1;

   100     }

   101 

   102     dbusServer = new DBusServer(&serverObj, this);

   103     QDBusConnection::sessionBus().registerObject(myPath, &serverObj);

   104     if (!QDBusConnection::sessionBus().registerService(myService)) {

   105         cerr << qPrintable(QDBusConnection::sessionBus().lastError().message()) << endl;

   106         return -1;

   107     }

   108 

   109     sendDBusRegister();

   110 

   111     return 0;

   112 }

   113 

   114 

   115 void DBusComm::onServiceDisconnect(const QString &name)

   116 {

   117     Q_UNUSED(name);

   118     emit serviceDisconnected();

   119 }

   120 

   121 

   122 void DBusComm::onServiceConnect(const QString &name)

   123 {

   124     Q_UNUSED(name);

   125     sendDBusRegister();

   126     emit serviceConnected();

   127 }

   128 

   129 

   130 void DBusComm::receivePositionUpdate(const QGeoPositionInfo &update)

   131 {

   132     emit receivedPositionUpdate(update);

   133 }

   134 

   135 

   136 void DBusComm::receiveSatellitesInView(const QList<QGeoSatelliteInfo> &info)

   137 {

   138     emit receivedSatellitesInView(info);

   139 }

   140 

   141 

   142 void DBusComm::receiveSatellitesInUse(const QList<QGeoSatelliteInfo> &info)

   143 {

   144     emit receivedSatellitesInUse(info);

   145 }

   146 

   147 

   148 void DBusComm::receiveSettings(QGeoPositionInfoSource::PositioningMethod methods, qint32 interval)

   149 {

   150     availablePositioningMethods = methods;

   151     minimumUpdateInterval = interval;

   152 }

   153 

   154 

   155 bool DBusComm::sendDBusRegister()

   156 {

   157     QDBusMessage reply = positioningdProxy->call("registerListener",

   158                                                  myService.toAscii().constData(),

   159                                                  myPath.toAscii().constData());

   160     if (reply.type() == QDBusMessage::ReplyMessage) {

   161         QList<QVariant> values = reply.arguments();

   162         clientId = values.takeFirst().toInt();

   163         quint32 m = values.takeFirst().toUInt();

   164         availablePositioningMethods = (QGeoPositionInfoSource::PositioningMethod) m;

   165         minimumUpdateInterval = values.takeFirst().toUInt();

   166         cout << "Register client ID: " << clientId << endl;

   167         cout << "Methods available: " << hex << availablePositioningMethods << dec;

   168         cout  << " minInterval: " << minimumUpdateInterval << "\n"; 

   169     } else {

   170         cerr << endl << "DBus error:\n";

   171         cerr << reply.errorName().toAscii().constData() << endl;

   172         cerr << reply.errorMessage().toAscii().constData() << endl;

   173         return false;

   174     }

   175 

   176     return true;

   177 }

   178 

   179 

   180 QGeoPositionInfoSource::PositioningMethods DBusComm::availableMethods() const

   181 {

   182     return availablePositioningMethods;

   183 }

   184 

   185 

   186 int DBusComm::minimumInterval() const

   187 {

   188     return minimumUpdateInterval;

   189 }

   190 

   191 

   192 bool DBusComm::sendConfigRequest(Command command, QGeoPositionInfoSource::PositioningMethods method,

   193                                  int interval) const

   194 {

   195     QDBusReply<int> reply; 

   196     reply = positioningdProxy->call("configSession", clientId, command, int(method), interval);

   197     

   198     //cout << "sessionConfigRequest cmd: cmd:" << command << " method: ";

   199     //cout << method << " interval: " << interval << "\n";

   200     

   201     if (reply.isValid()) {

   202         int n = reply.value();

   203         cout << "sessionConfigRequest:Reply: " << n << endl;

   204     } else {

   205         cerr << endl << "DBus error:\n";

   206         cerr << reply.error().name().toAscii().constData() << endl;

   207         cerr << reply.error().message().toAscii().constData() << endl;

   208         return false;

   209     }

   210 

   211     return true;

   212 }

   213 

   214 

   215 QGeoPositionInfo& DBusComm::requestLastKnownPosition(bool satelliteMethodOnly)

   216 {

   217     QDBusReply<QByteArray> reply; 

   218     reply = positioningdProxy->call("latestPosition", satelliteMethodOnly);

   219     static QGeoPositionInfo update;

   220 

   221     if (reply.isValid()) {

   222         // cout << "requestLastKnownPosition(): received update\n";

   223         QByteArray message = reply.value();

   224         QDataStream stream(message);

   225         stream >> update;

   226     } else {

   227         cerr << endl << "DBus error:\n";

   228         cerr << reply.error().name().toAscii().constData() << endl;

   229         cerr << reply.error().message().toAscii().constData() << endl;

   230         update = QGeoPositionInfo();

   231     }

   232 

   233     return update;

   234 } 

   235 

   236 

   237 bool DBusComm::createUniqueName()

   238 {

   239     QFile uuidfile("/proc/sys/kernel/random/uuid");

   240     if (!uuidfile.open(QIODevice::ReadOnly)) {

   241         cerr << "UUID file failed.";

   242         return false;

   243     }

   244 

   245     QTextStream in(&uuidfile);

   246     QString uuid = 'I' + in.readLine();

   247     uuid.replace('-', 'I');

   248     myService   = "com.nokia.qlocation." + uuid;

   249     myPath      = "/com/nokia/qlocation/" + uuid;

   250 

   251     return true;

   252 }

   253 

   254 #include "moc_dbuscomm_maemo_p.cpp"

   255 QTM_END_NAMESPACE

   256