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transmission/qt/app.cc

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/*
* This file Copyright (C) 2009-2010 Mnemosyne LLC
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#include <cassert>
#include <ctime>
#include <iostream>
#include <QDBusConnection>
#include <QDBusError>
#include <QDBusMessage>
#include <QDialogButtonBox>
#include <QIcon>
#include <QLabel>
#include <QLibraryInfo>
#include <QRect>
#include <QTranslator>
#include <libtransmission/transmission.h>
#include <libtransmission/tr-getopt.h>
#include <libtransmission/version.h>
#include "app.h"
#include "dbus-adaptor.h"
#include "mainwin.h"
#include "options.h"
#include "prefs.h"
#include "session.h"
#include "session-dialog.h"
#include "torrent-model.h"
#include "utils.h"
#include "watchdir.h"
namespace
{
const char * DBUS_SERVICE ( "com.transmissionbt.Transmission" );
const char * DBUS_OBJECT_PATH ( "/com/transmissionbt/Transmission" );
const char * DBUS_INTERFACE ( "com.transmissionbt.Transmission" );
const char * MY_NAME( "transmission" );
const tr_option opts[] =
{
{ 'g', "config-dir", "Where to look for configuration files", "g", 1, "<path>" },
{ 'm', "minimized", "Start minimized in system tray", "m", 0, NULL },
{ 'p', "port", "Port to use when connecting to an existing session", "p", 1, "<port>" },
{ 'r', "remote", "Connect to an existing session at the specified hostname", "r", 1, "<host>" },
{ 'u', "username", "Username to use when connecting to an existing session", "u", 1, "<username>" },
{ 'v', "version", "Show version number and exit", "v", 0, NULL },
{ 'w', "password", "Password to use when connecting to an existing session", "w", 1, "<password>" },
{ 0, NULL, NULL, NULL, 0, NULL }
};
const char*
getUsage( void )
{
return "Usage:\n"
" transmission [OPTIONS...] [torrent files]";
}
void
showUsage( void )
{
tr_getopt_usage( MY_NAME, getUsage( ), opts );
exit( 0 );
}
enum
{
STATS_REFRESH_INTERVAL_MSEC = 3000,
SESSION_REFRESH_INTERVAL_MSEC = 3000,
MODEL_REFRESH_INTERVAL_MSEC = 3000
};
}
MyApp :: MyApp( int& argc, char ** argv ):
QApplication( argc, argv ),
myLastFullUpdateTime( 0 )
{
setApplicationName( MY_NAME );
// install the qt translator
QTranslator * t = new QTranslator( );
t->load( "qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
installTranslator( t );
// install the transmission translator
t = new QTranslator( );
t->load( QString(MY_NAME) + "_" + QLocale::system().name() );
installTranslator( t );
// set the default icon
QIcon icon;
icon.addPixmap( QPixmap( ":/icons/transmission-16.png" ) );
icon.addPixmap( QPixmap( ":/icons/transmission-22.png" ) );
icon.addPixmap( QPixmap( ":/icons/transmission-24.png" ) );
icon.addPixmap( QPixmap( ":/icons/transmission-32.png" ) );
icon.addPixmap( QPixmap( ":/icons/transmission-48.png" ) );
setWindowIcon( icon );
// parse the command-line arguments
int c;
bool minimized = false;
const char * optarg;
const char * host = 0;
const char * port = 0;
const char * username = 0;
const char * password = 0;
const char * configDir = 0;
QStringList filenames;
while( ( c = tr_getopt( getUsage( ), argc, (const char**)argv, opts, &optarg ) ) ) {
switch( c ) {
case 'g': configDir = optarg; break;
case 'p': port = optarg; break;
case 'r': host = optarg; break;
case 'u': username = optarg; break;
case 'w': password = optarg; break;
case 'm': minimized = true; break;
case 'v': Utils::toStderr( QObject::tr( "transmission %1" ).arg( LONG_VERSION_STRING ) ); ::exit( 0 ); break;
case TR_OPT_ERR: Utils::toStderr( QObject::tr( "Invalid option" ) ); showUsage( ); break;
default: filenames.append( optarg ); break;
}
}
// set the fallback config dir
if( configDir == 0 )
configDir = tr_getDefaultConfigDir( MY_NAME );
// is this the first time we've run transmission?
const bool firstTime = !QFile(QDir(configDir).absoluteFilePath("settings.json")).exists();
// initialize the prefs
myPrefs = new Prefs ( configDir );
if( host != 0 )
myPrefs->set( Prefs::SESSION_REMOTE_HOST, host );
if( port != 0 )
myPrefs->set( Prefs::SESSION_REMOTE_PORT, port );
if( username != 0 )
myPrefs->set( Prefs::SESSION_REMOTE_USERNAME, username );
if( password != 0 )
myPrefs->set( Prefs::SESSION_REMOTE_PASSWORD, password );
if( ( host != 0 ) || ( port != 0 ) || ( username != 0 ) || ( password != 0 ) )
myPrefs->set( Prefs::SESSION_IS_REMOTE, true );
mySession = new Session( configDir, *myPrefs );
myModel = new TorrentModel( *myPrefs );
myWindow = new TrMainWindow( *mySession, *myPrefs, *myModel, minimized );
myWatchDir = new WatchDir( *myModel );
// when the session gets torrent info, update the model
connect( mySession, SIGNAL(torrentsUpdated(tr_benc*,bool)), myModel, SLOT(updateTorrents(tr_benc*,bool)) );
connect( mySession, SIGNAL(torrentsUpdated(tr_benc*,bool)), myWindow, SLOT(refreshActionSensitivity()) );
connect( mySession, SIGNAL(torrentsRemoved(tr_benc*)), myModel, SLOT(removeTorrents(tr_benc*)) );
// when the model sees a torrent for the first time, ask the session for full info on it
connect( myModel, SIGNAL(torrentsAdded(QSet<int>)), mySession, SLOT(initTorrents(QSet<int>)) );
mySession->initTorrents( );
mySession->refreshSessionStats( );
// when torrents are added to the watch directory, tell the session
connect( myWatchDir, SIGNAL(torrentFileAdded(QString)), this, SLOT(addTorrent(QString)) );
// init from preferences
QList<int> initKeys;
initKeys << Prefs::DIR_WATCH;
foreach( int key, initKeys )
refreshPref( key );
connect( myPrefs, SIGNAL(changed(int)), this, SLOT(refreshPref(const int)) );
QTimer * timer = &myModelTimer;
connect( timer, SIGNAL(timeout()), this, SLOT(refreshTorrents()) );
timer->setSingleShot( false );
timer->setInterval( MODEL_REFRESH_INTERVAL_MSEC );
timer->start( );
timer = &myStatsTimer;
connect( timer, SIGNAL(timeout()), mySession, SLOT(refreshSessionStats()) );
timer->setSingleShot( false );
timer->setInterval( STATS_REFRESH_INTERVAL_MSEC );
timer->start( );
timer = &mySessionTimer;
connect( timer, SIGNAL(timeout()), mySession, SLOT(refreshSessionInfo()) );
timer->setSingleShot( false );
timer->setInterval( SESSION_REFRESH_INTERVAL_MSEC );
timer->start( );
maybeUpdateBlocklist( );
if( !firstTime )
mySession->restart( );
else {
QDialog * d = new SessionDialog( *mySession, *myPrefs, myWindow );
d->show( );
}
if( !myPrefs->getBool( Prefs::USER_HAS_GIVEN_INFORMED_CONSENT ))
{
QDialog * dialog = new QDialog( myWindow );
dialog->setModal( true );
QVBoxLayout * v = new QVBoxLayout( dialog );
QLabel * l = new QLabel( tr( "Transmission is a file-sharing program. When you run a torrent, its data will be made available to others by means of upload. You and you alone are fully responsible for exercising proper judgement and abiding by your local laws." ) );
l->setWordWrap( true );
v->addWidget( l );
QDialogButtonBox * box = new QDialogButtonBox;
box->addButton( new QPushButton( tr( "&Cancel" ) ), QDialogButtonBox::RejectRole );
QPushButton * agree = new QPushButton( tr( "I &Agree" ) );
agree->setDefault( true );
box->addButton( agree, QDialogButtonBox::AcceptRole );
box->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
box->setOrientation( Qt::Horizontal );
v->addWidget( box );
connect( box, SIGNAL(rejected()), this, SLOT(quit()) );
connect( box, SIGNAL(accepted()), dialog, SLOT(deleteLater()) );
connect( box, SIGNAL(accepted()), this, SLOT(consentGiven()) );
dialog->show();
}
for( QStringList::const_iterator it=filenames.begin(), end=filenames.end(); it!=end; ++it )
addTorrent( *it );
// register as the dbus handler for Transmission
new TrDBusAdaptor( this );
QDBusConnection bus = QDBusConnection::sessionBus();
if (!bus.registerService("com.transmissionbt.Transmission"))
fprintf(stderr, "%s\n", qPrintable(bus.lastError().message()));
if( !bus.registerObject( "/com/transmissionbt/Transmission", this ))
fprintf(stderr, "%s\n", qPrintable(bus.lastError().message()));
}
void
MyApp :: consentGiven( )
{
myPrefs->set<bool>( Prefs::USER_HAS_GIVEN_INFORMED_CONSENT, true );
}
MyApp :: ~MyApp( )
{
const QRect mainwinRect( myWindow->geometry( ) );
delete myWatchDir;
delete myWindow;
delete myModel;
delete mySession;
myPrefs->set( Prefs :: MAIN_WINDOW_HEIGHT, std::max( 100, mainwinRect.height( ) ) );
myPrefs->set( Prefs :: MAIN_WINDOW_WIDTH, std::max( 100, mainwinRect.width( ) ) );
myPrefs->set( Prefs :: MAIN_WINDOW_X, mainwinRect.x( ) );
myPrefs->set( Prefs :: MAIN_WINDOW_Y, mainwinRect.y( ) );
delete myPrefs;
}
/***
****
***/
void
MyApp :: refreshPref( int key )
{
switch( key )
{
case Prefs :: BLOCKLIST_UPDATES_ENABLED:
maybeUpdateBlocklist( );
break;
case Prefs :: DIR_WATCH:
case Prefs :: DIR_WATCH_ENABLED: {
const QString path( myPrefs->getString( Prefs::DIR_WATCH ) );
const bool isEnabled( myPrefs->getBool( Prefs::DIR_WATCH_ENABLED ) );
myWatchDir->setPath( path, isEnabled );
break;
}
default:
break;
}
}
void
MyApp :: maybeUpdateBlocklist( )
{
if( !myPrefs->getBool( Prefs :: BLOCKLIST_UPDATES_ENABLED ) )
return;
const QDateTime lastUpdatedAt = myPrefs->getDateTime( Prefs :: BLOCKLIST_DATE );
const QDateTime nextUpdateAt = lastUpdatedAt.addDays( 7 );
const QDateTime now = QDateTime::currentDateTime( );
if( now < nextUpdateAt )
{
mySession->updateBlocklist( );
myPrefs->set( Prefs :: BLOCKLIST_DATE, now );
}
}
void
MyApp :: refreshTorrents( )
{
// usually we just poll the torrents that have shown recent activity,
// but we also periodically ask for updates on the others to ensure
// nothing's falling through the cracks.
const time_t now = time( NULL );
if( myLastFullUpdateTime + 60 >= now )
mySession->refreshActiveTorrents( );
else {
myLastFullUpdateTime = now;
mySession->refreshAllTorrents( );
}
}
/***
****
***/
void
MyApp :: addTorrent( const QString& key )
{
if( !myPrefs->getBool( Prefs :: OPTIONS_PROMPT ) )
{
mySession->addTorrent( key );
}
else if( Utils::isMagnetLink( key ) || QFile( key ).exists( ) )
{
Options * o = new Options( *mySession, *myPrefs, key, myWindow );
o->show( );
}
else if( Utils::isURL( key ) )
{
myWindow->openURL( key );
}
raise( );
}
void
MyApp :: raise( )
{
QApplication :: alert ( myWindow );
}
/***
****
***/
int
main( int argc, char * argv[] )
{
// find .torrents, URLs, magnet links, etc in the command-line args
int c;
QStringList addme;
const char * optarg;
char ** argvv = argv;
while( ( c = tr_getopt( getUsage( ), argc, (const char **)argvv, opts, &optarg ) ) )
if( c == TR_OPT_UNK )
addme.append( optarg );
// try to delegate the work to an existing copy of Transmission
// before starting ourselves...
bool delegated = false;
QDBusConnection bus = QDBusConnection::sessionBus();
for( int i=0, n=addme.size(); i<n; ++i )
{
const QString key = addme[i];
QDBusMessage request = QDBusMessage::createMethodCall( DBUS_SERVICE,
DBUS_OBJECT_PATH,
DBUS_INTERFACE,
"AddMetainfo" );
QList<QVariant> arguments;
arguments.push_back( QVariant( key ) );
request.setArguments( arguments );
QDBusMessage response = bus.call( request );
arguments = response.arguments( );
delegated |= (arguments.size()==1) && arguments[0].toBool();
}
if( addme.empty() )
{
QDBusMessage request = QDBusMessage::createMethodCall( DBUS_SERVICE,
DBUS_OBJECT_PATH,
DBUS_INTERFACE,
"PresentWindow" );
QDBusMessage response = bus.call( request );
QList<QVariant> arguments = response.arguments( );
delegated |= (arguments.size()==1) && arguments[0].toBool();
}
if( delegated )
return 0;
tr_optind = 1;
MyApp app( argc, argv );
return app.exec( );
}
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