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transmission/qt/Application.cc

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// This file Copyright © Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include "Application.h"
#include <algorithm>
#include <array>
#include <ctime>
#include <memory>
#include <utility>
#include <QIcon>
#include <QLibraryInfo>
#include <QMessageBox>
#include <QProcess>
#include <QRect>
#include <QSystemTrayIcon>
#include <QtDebug>
#ifdef QT_DBUS_LIB
#include <QDBusConnection>
#include <QDBusMessage>
#include <QDBusReply>
#endif
#if QT_CONFIG(accessibility)
#include <QAccessible>
#endif
#include <libtransmission/transmission.h>
#include <libtransmission/tr-getopt.h>
#include <libtransmission/utils.h>
#include <libtransmission/values.h>
#include <libtransmission/version.h>
#include "AccessibleSqueezeLabel.h"
#include "AddData.h"
#include "InteropHelper.h"
#include "MainWindow.h"
#include "OptionsDialog.h"
#include "Prefs.h"
#include "Session.h"
#include "TorrentModel.h"
#include "WatchDir.h"
namespace
{
std::array<tr_option, 8> const Opts = {
tr_option{ 'g', "config-dir", "Where to look for configuration files", "g", true, "<path>" },
{ 'm', "minimized", "Start minimized in system tray", "m", false, nullptr },
{ 'p', "port", "Port to use when connecting to an existing session", "p", true, "<port>" },
{ 'r', "remote", "Connect to an existing session at the specified hostname", "r", true, "<host>" },
{ 'u', "username", "Username to use when connecting to an existing session", "u", true, "<username>" },
{ 'v', "version", "Show version number and exit", "v", false, nullptr },
{ 'w', "password", "Password to use when connecting to an existing session", "w", true, "<password>" },
{ 0, nullptr, nullptr, nullptr, false, nullptr }
};
char const* getUsage()
{
return "Usage:\n"
" transmission [OPTIONS...] [torrent files]";
}
auto constexpr StatsRefreshIntervalMsec = 3000;
auto constexpr SessionRefreshIntervalMsec = 3000;
auto constexpr ModelRefreshIntervalMsec = 3000;
bool loadTranslation(QTranslator& translator, QString const& name, QLocale const& locale, QStringList const& search_directories)
{
for (QString const& directory : search_directories)
{
if (translator.load(locale, name, QStringLiteral("_"), directory))
{
return true;
}
}
return false;
}
[[nodiscard]] auto makeWindowIcon()
{
// first, try to load it from the system theme
if (auto icon = QIcon::fromTheme(QStringLiteral("transmission")); !icon.isNull())
{
return icon;
}
// if that fails, use our own as the fallback
return QIcon{ QStringLiteral(":/icons/transmission.svg") };
}
#if QT_CONFIG(accessibility)
QAccessibleInterface* accessibleFactory(QString const& className, QObject* object)
{
auto* widget = qobject_cast<QWidget*>(object);
if (widget != nullptr)
{
if (className == QStringLiteral("SqueezeLabel"))
{
return new AccessibleSqueezeLabel(widget);
}
}
return nullptr;
}
#endif // QT_CONFIG(accessibility)
} // namespace
Application::Application(int& argc, char** argv)
: QApplication{ argc, argv }
, config_name_{ QStringLiteral("transmission") }
, display_name_{ QStringLiteral("transmission-qt") }
{
setApplicationName(config_name_);
loadTranslations();
initUnits();
#if defined(_WIN32) || defined(__APPLE__)
if (QIcon::themeName().isEmpty())
{
QIcon::setThemeName(QStringLiteral("Faenza"));
}
#endif
setWindowIcon(makeWindowIcon());
#ifdef __APPLE__
setAttribute(Qt::AA_DontShowIconsInMenus);
#endif
// parse the command-line arguments
int c = 0;
bool minimized = false;
char const* optarg = nullptr;
QString host;
QString port;
QString username;
QString password;
QString config_dir;
QStringList filenames;
while ((c = tr_getopt(getUsage(), argc, const_cast<char const**>(argv), Opts.data(), &optarg)) != TR_OPT_DONE)
{
switch (c)
{
case 'g':
config_dir = QString::fromUtf8(optarg);
break;
case 'p':
port = QString::fromUtf8(optarg);
break;
case 'r':
host = QString::fromUtf8(optarg);
break;
case 'u':
username = QString::fromUtf8(optarg);
break;
case 'w':
password = QString::fromUtf8(optarg);
break;
case 'm':
minimized = true;
break;
case 'v':
qInfo() << qPrintable(display_name_) << LONG_VERSION_STRING;
quitLater();
return;
case TR_OPT_ERR:
qWarning() << qPrintable(QObject::tr("Invalid option"));
tr_getopt_usage(qPrintable(display_name_), getUsage(), Opts.data());
quitLater();
return;
default:
filenames.append(QString::fromUtf8(optarg));
break;
}
}
// try to delegate the work to an existing copy of Transmission
// before starting ourselves...
InteropHelper const interop_client;
if (interop_client.isConnected())
{
bool delegated = false;
for (QString const& filename : filenames)
{
auto const a = AddData(filename);
QString metainfo;
switch (a.type)
{
case AddData::URL:
metainfo = a.url.toString();
break;
case AddData::MAGNET:
metainfo = a.magnet;
break;
case AddData::FILENAME:
case AddData::METAINFO:
metainfo = QString::fromUtf8(a.toBase64());
break;
default:
break;
}
if (!metainfo.isEmpty() && interop_client.addMetainfo(metainfo))
{
delegated = true;
}
}
if (delegated)
{
quitLater();
return;
}
}
// set the fallback config dir
if (config_dir.isNull())
{
config_dir = QString::fromStdString(tr_getDefaultConfigDir("transmission"));
}
// ensure our config directory exists
QDir const dir(config_dir);
if (!dir.exists())
{
dir.mkpath(config_dir);
}
// is this the first time we've run transmission?
bool const first_time = !dir.exists(QStringLiteral("settings.json"));
// initialize the prefs
prefs_ = std::make_unique<Prefs>(config_dir);
if (!host.isNull())
{
prefs_->set(Prefs::SESSION_REMOTE_HOST, host);
}
if (!port.isNull())
{
prefs_->set(Prefs::SESSION_REMOTE_PORT, port.toUInt());
}
if (!username.isNull())
{
prefs_->set(Prefs::SESSION_REMOTE_USERNAME, username);
}
if (!password.isNull())
{
prefs_->set(Prefs::SESSION_REMOTE_PASSWORD, password);
}
if (!host.isNull() || !port.isNull() || !username.isNull() || !password.isNull())
{
prefs_->set(Prefs::SESSION_IS_REMOTE, true);
}
if (prefs_->getBool(Prefs::START_MINIMIZED))
{
minimized = true;
}
// start as minimized only if the system tray present
if (!prefs_->getBool(Prefs::SHOW_TRAY_ICON))
{
minimized = false;
}
#if QT_CONFIG(accessibility)
QAccessible::installFactory(&accessibleFactory);
#endif
session_ = std::make_unique<Session>(config_dir, *prefs_);
model_ = std::make_unique<TorrentModel>(*prefs_);
window_ = std::make_unique<MainWindow>(*session_, *prefs_, *model_, minimized);
watch_dir_ = std::make_unique<WatchDir>(*model_);
connect(this, &QCoreApplication::aboutToQuit, this, &Application::saveGeometry);
connect(model_.get(), &TorrentModel::torrentsAdded, this, &Application::onTorrentsAdded);
connect(model_.get(), &TorrentModel::torrentsCompleted, this, &Application::onTorrentsCompleted);
connect(model_.get(), &TorrentModel::torrentsEdited, this, &Application::onTorrentsEdited);
connect(model_.get(), &TorrentModel::torrentsNeedInfo, this, &Application::onTorrentsNeedInfo);
connect(prefs_.get(), &Prefs::changed, this, &Application::refreshPref);
connect(session_.get(), &Session::sourceChanged, this, &Application::onSessionSourceChanged);
connect(session_.get(), &Session::torrentsRemoved, model_.get(), &TorrentModel::removeTorrents);
connect(session_.get(), &Session::torrentsUpdated, model_.get(), &TorrentModel::updateTorrents);
connect(watch_dir_.get(), &WatchDir::torrentFileAdded, this, qOverload<QString const&>(&Application::addWatchdirTorrent));
// init from preferences
for (auto const key : { Prefs::DIR_WATCH })
{
refreshPref(key);
}
QTimer* timer = &model_timer_;
connect(timer, &QTimer::timeout, this, &Application::refreshTorrents);
timer->setSingleShot(false);
timer->setInterval(ModelRefreshIntervalMsec);
timer->start();
timer = &stats_timer_;
connect(timer, &QTimer::timeout, session_.get(), &Session::refreshSessionStats);
timer->setSingleShot(false);
timer->setInterval(StatsRefreshIntervalMsec);
timer->start();
timer = &session_timer_;
connect(timer, &QTimer::timeout, session_.get(), &Session::refreshSessionInfo);
timer->setSingleShot(false);
timer->setInterval(SessionRefreshIntervalMsec);
timer->start();
maybeUpdateBlocklist();
if (!first_time)
{
session_->restart();
}
else
{
window_->openSession();
}
if (!prefs_->getBool(Prefs::USER_HAS_GIVEN_INFORMED_CONSENT))
{
auto* dialog = new QMessageBox{ QMessageBox::Information,
QString{},
tr("<b>Transmission is a file sharing program.</b>"),
QMessageBox::Ok | QMessageBox::Cancel,
window_.get() };
dialog->setInformativeText(
tr("When you run a torrent, its data will be made available to others by means of upload. "
"Any content you share is your sole responsibility."));
dialog->button(QMessageBox::Ok)->setText(tr("I &Agree"));
dialog->setDefaultButton(QMessageBox::Ok);
dialog->setModal(true);
connect(dialog, &QDialog::finished, this, &Application::consentGiven);
dialog->setAttribute(Qt::WA_DeleteOnClose);
dialog->show();
}
// torrent files passed in on the command line
for (QString const& filename : filenames)
{
addTorrent(AddData{ filename });
}
InteropHelper::registerObject(this);
#ifdef QT_DBUS_LIB
if (auto bus = QDBusConnection::sessionBus(); bus.isConnected())
{
bus.connect(
fdo_notifications_service_name_,
fdo_notifications_path_,
fdo_notifications_interface_name_,
QLatin1String("ActionInvoked"),
this,
SLOT(onNotificationActionInvoked(quint32, QString)));
}
#endif
}
void Application::loadTranslations()
{
auto const qt_qm_dirs = QStringList{} <<
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
QLibraryInfo::path(QLibraryInfo::TranslationsPath) <<
#else
QLibraryInfo::location(QLibraryInfo::TranslationsPath) <<
#endif
#ifdef TRANSLATIONS_DIR
QStringLiteral(TRANSLATIONS_DIR) <<
#endif
(applicationDirPath() + QStringLiteral("/translations"));
QStringList const app_qm_dirs = QStringList{} <<
#ifdef TRANSLATIONS_DIR
QStringLiteral(TRANSLATIONS_DIR) <<
#endif
(applicationDirPath() + QStringLiteral("/translations"));
auto const qt_file_name = QStringLiteral("qtbase");
QLocale const locale;
QLocale const english_locale(QLocale::English, QLocale::UnitedStates);
if (loadTranslation(qt_translator_, qt_file_name, locale, qt_qm_dirs) ||
loadTranslation(qt_translator_, qt_file_name, english_locale, qt_qm_dirs))
{
installTranslator(&qt_translator_);
}
if (loadTranslation(app_translator_, config_name_, locale, app_qm_dirs) ||
loadTranslation(app_translator_, config_name_, english_locale, app_qm_dirs))
{
installTranslator(&app_translator_);
}
}
void Application::initUnits()
{
using Config = libtransmission::Values::Config;
Config::Speed = { Config::Base::Kilo, tr("B/s").toStdString(), tr("kB/s").toStdString(),
tr("MB/s").toStdString(), tr("GB/s").toStdString(), tr("TB/s").toStdString() };
Config::Memory = { Config::Base::Kibi, tr("B").toStdString(), tr("KiB").toStdString(),
tr("MiB").toStdString(), tr("GiB").toStdString(), tr("TiB").toStdString() };
Config::Storage = { Config::Base::Kilo, tr("B").toStdString(), tr("kB").toStdString(),
tr("MB").toStdString(), tr("GB").toStdString(), tr("TB").toStdString() };
}
void Application::quitLater() const
{
QTimer::singleShot(0, this, SLOT(quit()));
}
void Application::onTorrentsEdited(torrent_ids_t const& torrent_ids) const
{
// the backend's tr_info has changed, so reload those fields
session_->initTorrents(torrent_ids);
}
QStringList Application::getNames(torrent_ids_t const& torrent_ids) const
{
QStringList names;
for (auto const& id : torrent_ids)
{
names.push_back(model_->getTorrentFromId(id)->name());
}
names.sort();
return names;
}
void Application::onTorrentsAdded(torrent_ids_t const& torrent_ids) const
{
if (!prefs_->getBool(Prefs::SHOW_NOTIFICATION_ON_ADD))
{
return;
}
for (auto id : torrent_ids)
{
notifyTorrentAdded(model_->getTorrentFromId(id));
}
}
void Application::onTorrentsCompleted(torrent_ids_t const& torrent_ids) const
{
if (prefs_->getBool(Prefs::SHOW_NOTIFICATION_ON_COMPLETE))
{
auto const title = tr("Torrent(s) Completed", nullptr, static_cast<int>(std::size(torrent_ids)));
auto const body = getNames(torrent_ids).join(QStringLiteral("\n"));
notifyApp(title, body);
}
if (prefs_->getBool(Prefs::COMPLETE_SOUND_ENABLED))
{
#if defined(Q_OS_WIN) || defined(Q_OS_MAC)
beep();
#else
auto args = prefs_->get<QStringList>(Prefs::COMPLETE_SOUND_COMMAND);
auto const command = args.takeFirst();
QProcess::execute(command, args);
#endif
}
}
void Application::onTorrentsNeedInfo(torrent_ids_t const& torrent_ids) const
{
if (!torrent_ids.empty())
{
session_->initTorrents(torrent_ids);
}
}
void Application::notifyTorrentAdded(Torrent const* tor) const
{
QStringList actions;
actions << QString{ QLatin1String("start-now(%1)") }.arg(tor->id()) << QObject::tr("Start Now");
notifyApp(tr("Torrent Added"), tor->name(), actions);
}
/***
****
***/
void Application::consentGiven(int result) const
{
if (result == QMessageBox::Ok)
{
prefs_->set<bool>(Prefs::USER_HAS_GIVEN_INFORMED_CONSENT, true);
}
else
{
quit();
}
}
void Application::saveGeometry() const
{
if (prefs_ != nullptr && window_ != nullptr)
{
auto const geometry = window_->geometry();
prefs_->set(Prefs::MAIN_WINDOW_HEIGHT, std::max(100, geometry.height()));
prefs_->set(Prefs::MAIN_WINDOW_WIDTH, std::max(100, geometry.width()));
prefs_->set(Prefs::MAIN_WINDOW_X, geometry.x());
prefs_->set(Prefs::MAIN_WINDOW_Y, geometry.y());
}
}
/***
****
***/
void Application::refreshPref(int key) const
{
switch (key)
{
case Prefs::BLOCKLIST_UPDATES_ENABLED:
maybeUpdateBlocklist();
break;
case Prefs::DIR_WATCH:
case Prefs::DIR_WATCH_ENABLED:
watch_dir_->setPath(prefs_->getString(Prefs::DIR_WATCH), prefs_->getBool(Prefs::DIR_WATCH_ENABLED));
break;
default:
break;
}
}
void Application::maybeUpdateBlocklist() const
{
if (!prefs_->getBool(Prefs::BLOCKLIST_UPDATES_ENABLED))
{
return;
}
QDateTime const last_updated_at = prefs_->getDateTime(Prefs::BLOCKLIST_DATE);
QDateTime const next_update_at = last_updated_at.addDays(7);
QDateTime const now = QDateTime::currentDateTime();
if (now < next_update_at)
{
session_->updateBlocklist();
prefs_->set(Prefs::BLOCKLIST_DATE, now);
}
}
void Application::onSessionSourceChanged() const
{
session_->initTorrents();
session_->refreshSessionStats();
session_->refreshSessionInfo();
}
void Application::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.
time_t const now = time(nullptr);
if (last_full_update_time_ + 60 >= now)
{
session_->refreshActiveTorrents();
}
else
{
last_full_update_time_ = now;
session_->refreshAllTorrents();
}
}
/***
****
***/
void Application::addWatchdirTorrent(QString const& filename) const
{
auto add_data = AddData{ filename };
auto const disposal = prefs_->getBool(Prefs::TRASH_ORIGINAL) ? AddData::FilenameDisposal::Delete :
AddData::FilenameDisposal::Rename;
add_data.setFileDisposal(disposal);
addTorrent(std::move(add_data));
}
void Application::addTorrent(AddData addme) const
{
if (addme.type == AddData::NONE)
{
return;
}
// if there's not already a disposal action set,
// then honor the `trash original` preference setting
if (!addme.fileDisposal() && prefs_->getBool(Prefs::TRASH_ORIGINAL))
{
addme.setFileDisposal(AddData::FilenameDisposal::Delete);
}
if (!prefs_->getBool(Prefs::OPTIONS_PROMPT))
{
session_->addTorrent(addme);
}
else
{
auto* o = new OptionsDialog{ *session_, *prefs_, addme, window_.get() };
o->show();
}
raise();
}
/***
****
***/
void Application::raise() const
{
alert(window_.get());
}
bool Application::notifyApp(QString const& title, QString const& body, QStringList const& actions) const
{
#ifdef QT_DBUS_LIB
if (auto bus = QDBusConnection::sessionBus(); bus.isConnected())
{
QDBusMessage m = QDBusMessage::createMethodCall(
fdo_notifications_service_name_,
fdo_notifications_path_,
fdo_notifications_interface_name_,
QStringLiteral("Notify"));
QVariantList args;
args.append(QStringLiteral("Transmission")); // app_name
args.append(0U); // replaces_id
args.append(QStringLiteral("transmission")); // icon
args.append(title); // summary
args.append(body); // body
args.append(actions);
args.append(QVariantMap{ {
std::make_pair(QStringLiteral("category"), QVariant{ QStringLiteral("transfer.complete") }),
} }); // hints
args.append(static_cast<int32_t>(-1)); // use the default timeout period
m.setArguments(args);
QDBusReply<quint32> const reply_msg = bus.call(m);
if (reply_msg.isValid() && reply_msg.value() > 0)
{
return true;
}
}
#endif
window_->trayIcon().showMessage(title, body);
return true;
}
#ifdef QT_DBUS_LIB
void Application::onNotificationActionInvoked(quint32 /* notification_id */, QString action_key)
{
auto const match = start_now_regex_.match(action_key);
if (match.hasMatch())
{
int const torrent_id = match.captured(1).toInt();
session_->startTorrentsNow({ torrent_id });
}
}
#endif
/***
****
***/
int tr_main(int argc, char** argv)
{
auto const init_mgr = tr_lib_init();
tr_locale_set_global("");
InteropHelper::initialize();
Application const app(argc, argv);
return QApplication::exec();
}
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