network.cpp

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/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#define QTOPIA_INTERNAL_LANGLIST
#include <qpe/network.h>
#include <qpe/networkinterface.h>
#include <qpe/global.h>
#include <qpe/config.h>
#include <qpe/resource.h>
#include <qpe/qpeapplication.h>
#include <qpe/qcopenvelope_qws.h>
#include <qpe/qlibrary.h>

#include <qlistbox.h>
#include <qdir.h>
#include <qlayout.h>
#include <qdict.h>
#include <qtranslator.h>

#include <stdlib.h>

#ifndef QT_NO_COP
class NetworkEmitter : public QCopChannel {
    Q_OBJECT
public:
    NetworkEmitter() : QCopChannel("QPE/Network",qApp)
    {
    }

    void receive(const QCString &msg, const QByteArray&)
    {
        if ( msg == "choicesChanged()" )
            emit changed();
    }

signals:
    void changed();
};

void Network::start(const QString& choice, const QString& password)
{
    QCopEnvelope e("QPE/Network", "start(QString,QString)");
    e << choice << password;
}

// copy the proxy settings of the active config over to the Proxies.conf file
void Network::writeProxySettings( Config &cfg )
{
    Config proxy( Network::settingsDir() + "/Proxies.conf", Config::File );
    proxy.setGroup("Properties");
    cfg.setGroup("Proxy");
    proxy.writeEntry("type", cfg.readEntry("type") );
    proxy.writeEntry("autoconfig", cfg.readEntry("autoconfig") );
    proxy.writeEntry("httphost", cfg.readEntry("httphost") );
    proxy.writeEntry("httpport", cfg.readEntry("httpport") );
    proxy.writeEntry("ftphost", cfg.readEntry("ftphost") );
    proxy.writeEntry("ftpport", cfg.readEntry("ftpport") );
    proxy.writeEntry("noproxies", cfg.readEntry("noproxies") );
    cfg.setGroup("Properties");
}



void Network::stop()
{
    QCopEnvelope e("QPE/Network", "stop()");
}

static NetworkEmitter *emitter = 0;

void Network::connectChoiceChange(QObject* receiver, const char* slot)
{
    if ( !emitter )
        emitter = new NetworkEmitter;
    QObject::connect(emitter,SIGNAL(changed()),receiver,slot);
}

#endif  // QT_NO_COP

QString Network::settingsDir()
{
    return Global::applicationFileName("Network", "modules");
}

#ifndef QT_NO_COP

QStringList Network::choices(QListBox* lb, const QString& dir)
{
    QStringList list;

    if ( lb )
        lb->clear();

    QString adir = dir.isEmpty() ? settingsDir() : dir;
    QDir settingsdir(adir);
    settingsdir.mkdir(adir);

    QStringList files = settingsdir.entryList("*.conf");
    for (QStringList::ConstIterator it=files.begin(); it!=files.end(); ++it ) {
        QString filename = settingsdir.filePath(*it);
        Config cfg(filename, Config::File);
        cfg.setGroup("Info");
        if ( lb )
            lb->insertItem(Resource::loadPixmap("Network/" + cfg.readEntry("Type")),
                cfg.readEntry("Name"));
        list.append(filename);
    }

    return list;
}

class NetworkServer : public QCopChannel {
    Q_OBJECT
public:
    NetworkServer(QObject* parent) : QCopChannel("QPE/Network",parent), wait(0)
    {
        up = FALSE;
        examineNetworks( TRUE );
        QCopChannel* card = new QCopChannel("QPE/Card",parent);
        connect(card,SIGNAL(received(const QCString&,const QByteArray&)),
            this,SLOT(cardMessage(const QCString&,const QByteArray&)));
    }

    ~NetworkServer()
    {
        stop();
    }

    bool networkOnline() const
    {
        return up;
    }

private:
    void receive(const QCString &msg, const QByteArray& data)
    {
        if ( msg == "start(QString,QString)" ) {
            QDataStream stream(data,IO_ReadOnly);
            QString file,password;
            stream >> file >> password;
            if ( file.isEmpty() ) {
                QStringList l = Network::choices();
                for (QStringList::ConstIterator i=l.begin(); i!=l.end(); ++i) {
                    Config cfg(*i,Config::File);
                    cfg.setGroup("Info");
                    QString type = cfg.readEntry("Type");
                    NetworkInterface* plugin = Network::loadPlugin(type);
                    cfg.setGroup("Properties");
                    if ( plugin && plugin->isAvailable(cfg) ) {
                        file = *i;
                        break;
                    }
                }
                if ( file.isEmpty() ) {
                    QCopEnvelope("QPE/Network", "failed()");
                    return;
                }
            }
            start(file,password);
        } else if ( msg == "stop()" ) {
            stop();
        } else if ( msg == "choicesChanged()" ) {
            examineNetworks();
        }
    }

private slots:
    void cardMessage(const QCString &msg, const QByteArray&)
    {
        if ( msg == "stabChanged()" )
            examineNetworks();
    }

private:
    void examineNetworks( bool firstStart = FALSE )
    {
        QStringList l = Network::choices();
        bool wasup = up; up=FALSE;
        QStringList pavailable = available;
        available.clear();
        for (QStringList::ConstIterator it=l.begin(); it!=l.end(); ++it) {
            Config cfg(*it,Config::File);
            cfg.setGroup("Info");
            QString type = cfg.readEntry("Type");
            NetworkInterface* plugin = Network::loadPlugin(type);
            cfg.setGroup("Properties");
            if ( plugin ) {
                if ( plugin->isActive(cfg) ) {
                    up = TRUE;
                    if ( firstStart )
                        plugin->start( cfg );
                }
                if ( plugin->isAvailable(cfg) )
                    available.append(*it);
            }
        }

        // Try to work around unreproducible bug whereby
        // the netmon applet shows wrong state.
        bool reannounce = wait<0;

        if ( available != pavailable || reannounce ) {
            QCopEnvelope e("QPE/Network", "available(QStringList)");
            e << available;
        }
        if ( up != wasup || reannounce ) {
            QCopEnvelope("QPE/Network", up ? "up()" : "down()");
        }
    }

    void start( const QString& file, const QString& password )
    {
        if ( !current.isEmpty() )
            stop();
        current = QString::null;
        Config cfg(file, Config::File);
        cfg.setGroup("Info");
        QString type = cfg.readEntry("Type");
        NetworkInterface* plugin = Network::loadPlugin(type);
        bool started = FALSE;
        if ( plugin ) {
            cfg.setGroup("Properties");
            if ( plugin->start(cfg,password) ) {
                Network::writeProxySettings( cfg );
                current = file;
                wait=0;
                startTimer(400);
                started = TRUE;
            }
        }
        if ( !started ) {
            QCopEnvelope("QPE/Network", "failed()");
        }
    }

    void stop()
    {
        bool stopped = FALSE;
        if ( !current.isEmpty() ) {
            Config cfg(current, Config::File);
            cfg.setGroup("Info");
            QString type = cfg.readEntry("Type");
            NetworkInterface* plugin = Network::loadPlugin(type);
            if ( plugin ) {
                cfg.setGroup("Properties");
                if ( plugin->stop(cfg) ) {
                    current = QString::null;
                    wait=0;
                    startTimer(400);
                    stopped = TRUE;
                }
            }
        }
        if ( !stopped ) {
            QCopEnvelope("QPE/Network", "failed()");
        }
    }

    void timerEvent(QTimerEvent*)
    {
        examineNetworks();
        if ( wait >= 0 ) {
            if ( up == !current.isNull() ) {
                // done
                killTimers();
                if ( up ) {
                    startTimer(3000); // monitor link
                    wait = -1;
                }
            } else {
                wait++;
                if ( wait == 600 ) {
                    killTimers(); // forget about it after 240 s
                    QCopEnvelope("QPE/Network", "failed()");
                    up = !current.isNull();
                }
            }
        } else if ( !up ) {
            killTimers();
        }
    }

private:
    QStringList available;
    QString current;
    bool up;
    int wait;
};

static NetworkServer* ns=0;

QString Network::serviceName(const QString& service)
{
    Config cfg(service, Config::File);
    cfg.setGroup("Info");
    return cfg.readEntry("Name");
}

QString Network::serviceType(const QString& service)
{
    Config cfg(service, Config::File);
    cfg.setGroup("Info");
    return cfg.readEntry("Type");
}

bool Network::serviceNeedsPassword(const QString& service)
{
    Config cfg(service,Config::File);
    cfg.setGroup("Info");
    QString type = cfg.readEntry("Type");
    NetworkInterface* plugin = Network::loadPlugin(type);
    cfg.setGroup("Properties");
    return plugin ? plugin->needPassword(cfg) : FALSE;
}

bool Network::networkOnline()
{
    return ns && ns->networkOnline();
}

void Network::createServer(QObject* parent)
{
    ns = new NetworkServer(parent);
}

int Network::addStateWidgets(QWidget* parent)
{
    int n=0;
    QStringList l = Network::choices();
    QVBoxLayout* vb = new QVBoxLayout(parent);
    for (QStringList::ConstIterator it=l.begin(); it!=l.end(); ++it) {
        Config cfg(*it,Config::File);
        cfg.setGroup("Info");
        QString type = cfg.readEntry("Type");
        NetworkInterface* plugin = Network::loadPlugin(type);
        cfg.setGroup("Properties");
        if ( plugin ) {
            QWidget* w;
            if ( (w=plugin->addStateWidget(parent,cfg)) ) {
                n++;
                vb->addWidget(w);
            }
        }
    }
    return n;
}

static QDict<NetworkInterface> *ifaces;

NetworkInterface* Network::loadPlugin(const QString& type)
{
#ifndef QT_NO_COMPONENT
    if ( !ifaces ) ifaces = new QDict<NetworkInterface>;
    NetworkInterface *iface = ifaces->find(type);
    if ( !iface ) {
#ifdef Q_OS_MACX
        QString libfile = QPEApplication::qpeDir() + "plugins/network/lib" + type + ".dylib";
#else
        QString libfile = QPEApplication::qpeDir() + "plugins/network/lib" + type + ".so";
#endif
        QLibrary lib(libfile);
        if ( !lib.queryInterface( IID_Network, (QUnknownInterface**)&iface ) == QS_OK )
            return 0;
        ifaces->insert(type,iface);
        QStringList langs = Global::languageList();
        for (QStringList::ConstIterator it = langs.begin(); it!=langs.end(); ++it) {
            QString lang = *it;
            QTranslator * trans = new QTranslator(qApp);
            QString tfn = QPEApplication::qpeDir()+"i18n/"+lang+"/lib"+type+".qm";
            if ( trans->load( tfn ))
                qApp->installTranslator( trans );
            else
                delete trans;
        }
    }
    return iface;
#else
    return 0;
#endif
}

#include "network.moc"
#endif  // QT_NO_COP

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