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qBittorrent/src/app/main.cpp

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/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2014 Vladimir Golovnev <glassez@yandex.ru>
* Copyright (C) 2006 Christophe Dumez
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* Contact : chris@qbittorrent.org
*/
#include <QDebug>
#include <QScopedPointer>
#ifndef DISABLE_GUI
// GUI-only includes
#include <QFont>
#include <QMessageBox>
#include <QPainter>
#include <QPen>
#include <QPushButton>
#include <QSplashScreen>
#ifdef QBT_STATIC_QT
#include <QtPlugin>
#ifdef QBT_USES_QT5
Q_IMPORT_PLUGIN(QICOPlugin)
#else
Q_IMPORT_PLUGIN(qico)
#endif
#endif // QBT_STATIC_QT
#else
// NoGUI-only includes
#include <cstdio>
#ifdef Q_OS_UNIX
#include "unistd.h"
#endif
#endif // DISABLE_GUI
#ifdef Q_OS_UNIX
#include <signal.h>
#include <execinfo.h>
#include "stacktrace.h"
#endif // Q_OS_UNIX
#ifdef STACKTRACE_WIN
#include <signal.h>
#include "stacktrace_win.h"
#include "stacktrace_win_dlg.h"
#endif //STACKTRACE_WIN
#include <cstdlib>
#include <iostream>
#include "application.h"
#include "base/utils/misc.h"
#include "base/preferences.h"
#include "upgrade.h"
// Signal handlers
#if defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
void sigNormalHandler(int signum);
void sigAbnormalHandler(int signum);
// sys_signame[] is only defined in BSD
const char *sysSigName[] = {
"", "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", "SIGABRT", "SIGBUS", "SIGFPE", "SIGKILL",
"SIGUSR1", "SIGSEGV", "SIGUSR2", "SIGPIPE", "SIGALRM", "SIGTERM", "SIGSTKFLT", "SIGCHLD", "SIGCONT", "SIGSTOP",
"SIGTSTP", "SIGTTIN", "SIGTTOU", "SIGURG", "SIGXCPU", "SIGXFSZ", "SIGVTALRM", "SIGPROF", "SIGWINCH", "SIGIO",
"SIGPWR", "SIGUNUSED"
};
#endif
struct QBtCommandLineParameters
{
bool showHelp;
#ifndef Q_OS_WIN
bool showVersion;
#endif
#ifndef DISABLE_GUI
bool noSplash;
#else
bool shouldDaemonize;
#endif
int webUiPort;
QStringList torrents;
QString unknownParameter;
QBtCommandLineParameters()
: showHelp(false)
#ifndef Q_OS_WIN
, showVersion(false)
#endif
#ifndef DISABLE_GUI
, noSplash(Preferences::instance()->isSplashScreenDisabled())
#else
, shouldDaemonize(false)
#endif
, webUiPort(Preferences::instance()->getWebUiPort())
{
}
};
#ifndef DISABLE_GUI
void showSplashScreen();
#endif
void displayVersion();
void displayUsage(const QString &prg_name);
bool userAgreesWithLegalNotice();
void displayBadArgMessage(const QString &message);
QBtCommandLineParameters parseCommandLine();
// Main
int main(int argc, char *argv[])
{
// We must save it here because QApplication constructor may change it
bool isOneArg = (argc == 2);
#ifdef Q_OS_MAC
// On macOS 10.12 Sierra, Apple changed the behaviour of CFPreferencesSetValue() https://bugreports.qt.io/browse/QTBUG-56344
// Due to this, we have to move from native plist to IniFormat
macMigratePlists();
#endif
#ifndef DISABLE_GUI
migrateRSS();
#endif
// Create Application
QString appId = QLatin1String("qBittorrent-") + Utils::Misc::getUserIDString();
QScopedPointer<Application> app(new Application(appId, argc, argv));
const QBtCommandLineParameters params = parseCommandLine();
if (!params.unknownParameter.isEmpty()) {
displayBadArgMessage(QObject::tr("%1 is an unknown command line parameter.", "--random-parameter is an unknown command line parameter.")
.arg(params.unknownParameter));
return EXIT_FAILURE;
}
#ifndef Q_OS_WIN
if (params.showVersion) {
if (isOneArg) {
displayVersion();
return EXIT_SUCCESS;
}
else {
displayBadArgMessage(QObject::tr("%1 must be the single command line parameter.")
.arg(QLatin1String("-v (or --version)")));
return EXIT_FAILURE;
}
}
#endif
if (params.showHelp) {
if (isOneArg) {
displayUsage(argv[0]);
return EXIT_SUCCESS;
}
else {
displayBadArgMessage(QObject::tr("%1 must be the single command line parameter.")
.arg(QLatin1String("-h (or --help)")));
return EXIT_FAILURE;
}
}
if ((params.webUiPort > 0) && (params.webUiPort <= 65535)) {
Preferences::instance()->setWebUiPort(params.webUiPort);
}
else {
displayBadArgMessage(QObject::tr("%1 must specify the correct port (1 to 65535).")
.arg(QLatin1String("--webui-port")));
return EXIT_FAILURE;
}
// Set environment variable
if (!qputenv("QBITTORRENT", QByteArray(VERSION)))
std::cerr << "Couldn't set environment variable...\n";
#ifndef DISABLE_GUI
if (!userAgreesWithLegalNotice())
return EXIT_SUCCESS;
#else
if (!params.shouldDaemonize
&& isatty(fileno(stdin))
&& isatty(fileno(stdout))
&& !userAgreesWithLegalNotice())
return EXIT_SUCCESS;
#endif
// Check if qBittorrent is already running for this user
if (app->isRunning()) {
#ifdef DISABLE_GUI
if (params.shouldDaemonize) {
displayBadArgMessage(QObject::tr("You cannot use %1: qBittorrent is already running for this user.")
.arg(QLatin1String("-d (or --daemon)")));
return EXIT_FAILURE;
}
else
#endif
qDebug("qBittorrent is already running for this user.");
Utils::Misc::msleep(300);
app->sendParams(params.torrents);
return EXIT_SUCCESS;
}
#if defined(Q_OS_WIN) && defined(QBT_USES_QT5)
// This affects only Windows apparently and Qt5.
// When QNetworkAccessManager is instantiated it regularly starts polling
// the network interfaces to see what's available and their status.
// This polling creates jitter and high ping with wifi interfaces.
// So here we disable it for lack of better measure.
// It will also spew this message in the console: QObject::startTimer: Timers cannot have negative intervals
// For more info see:
// 1. https://github.com/qbittorrent/qBittorrent/issues/4209
// 2. https://bugreports.qt.io/browse/QTBUG-40332
// 3. https://bugreports.qt.io/browse/QTBUG-46015
qputenv("QT_BEARER_POLL_TIMEOUT", QByteArray::number(-1));
#endif
#if defined(Q_OS_MAC)
{
// Since Apple made difficult for users to set PATH, we set here for convenience.
// Users are supposed to install Homebrew Python for search function.
// For more info see issue #5571.
QByteArray path = "/usr/local/bin:";
path += qgetenv("PATH");
qputenv("PATH", path.constData());
}
#endif
#ifndef DISABLE_GUI
if (!upgrade()) return EXIT_FAILURE;
#else
if (!upgrade(!params.shouldDaemonize
&& isatty(fileno(stdin))
&& isatty(fileno(stdout)))) return EXIT_FAILURE;
#endif
#ifdef DISABLE_GUI
if (params.shouldDaemonize) {
app.reset(); // Destroy current application
if ((daemon(1, 0) == 0)) {
app.reset(new Application(appId, argc, argv));
if (app->isRunning()) {
// Another instance had time to start.
return EXIT_FAILURE;
}
}
else {
qCritical("Something went wrong while daemonizing, exiting...");
return EXIT_FAILURE;
}
}
#else
if (!params.noSplash)
showSplashScreen();
#endif
#if defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
signal(SIGINT, sigNormalHandler);
signal(SIGTERM, sigNormalHandler);
signal(SIGABRT, sigAbnormalHandler);
signal(SIGSEGV, sigAbnormalHandler);
#endif
return app->exec(params.torrents);
}
QBtCommandLineParameters parseCommandLine()
{
QBtCommandLineParameters result;
QStringList appArguments = qApp->arguments();
for (int i = 1; i < appArguments.size(); ++i) {
const QString& arg = appArguments[i];
if ((arg.startsWith("--") && !arg.endsWith(".torrent")) ||
(arg.startsWith("-") && arg.size() == 2)) {
//Parse known parameters
if ((arg == QLatin1String("-h")) || (arg == QLatin1String("--help"))) {
result.showHelp = true;
}
#ifndef Q_OS_WIN
else if ((arg == QLatin1String("-v")) || (arg == QLatin1String("--version"))) {
result.showVersion = true;
}
#endif
else if (arg.startsWith(QLatin1String("--webui-port="))) {
QStringList parts = arg.split(QLatin1Char('='));
if (parts.size() == 2)
result.webUiPort = parts.last().toInt();
}
#ifndef DISABLE_GUI
else if (arg == QLatin1String("--no-splash")) {
result.noSplash = true;
}
#else
else if ((arg == QLatin1String("-d")) || (arg == QLatin1String("--daemon"))) {
result.shouldDaemonize = true;
}
#endif
else {
//Unknown argument
result.unknownParameter = arg;
break;
}
}
else {
QFileInfo torrentPath;
torrentPath.setFile(arg);
if (torrentPath.exists())
result.torrents += torrentPath.absoluteFilePath();
else
result.torrents += arg;
}
}
return result;
}
#if defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
void sigNormalHandler(int signum)
{
#if !defined Q_OS_WIN && !defined Q_OS_HAIKU
const char str1[] = "Catching signal: ";
const char *sigName = sysSigName[signum];
const char str2[] = "\nExiting cleanly\n";
write(STDERR_FILENO, str1, strlen(str1));
write(STDERR_FILENO, sigName, strlen(sigName));
write(STDERR_FILENO, str2, strlen(str2));
#endif // !defined Q_OS_WIN && !defined Q_OS_HAIKU
signal(signum, SIG_DFL);
qApp->exit(); // unsafe, but exit anyway
}
void sigAbnormalHandler(int signum)
{
#if !defined Q_OS_WIN && !defined Q_OS_HAIKU
const char str1[] = "\n\n*************************************************************\nCatching signal: ";
const char *sigName = sysSigName[signum];
const char str2[] = "\nPlease file a bug report at http://bug.qbittorrent.org and provide the following information:\n\n"
"qBittorrent version: " VERSION "\n";
write(STDERR_FILENO, str1, strlen(str1));
write(STDERR_FILENO, sigName, strlen(sigName));
write(STDERR_FILENO, str2, strlen(str2));
print_stacktrace(); // unsafe
#endif // !defined Q_OS_WIN && !defined Q_OS_HAIKU
#ifdef STACKTRACE_WIN
StraceDlg dlg; // unsafe
dlg.setStacktraceString(straceWin::getBacktrace());
dlg.exec();
#endif // STACKTRACE_WIN
signal(signum, SIG_DFL);
raise(signum);
}
#endif // defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
#ifndef DISABLE_GUI
void showSplashScreen()
{
QPixmap splash_img(":/icons/skin/splash.png");
QPainter painter(&splash_img);
QString version = VERSION;
painter.setPen(QPen(Qt::white));
painter.setFont(QFont("Arial", 22, QFont::Black));
painter.drawText(224 - painter.fontMetrics().width(version), 270, version);
QSplashScreen *splash = new QSplashScreen(splash_img);
splash->show();
QTimer::singleShot(1500, splash, SLOT(deleteLater()));
qApp->processEvents();
}
#endif
void displayVersion()
{
std::cout << qPrintable(qApp->applicationName()) << " " << VERSION << std::endl;
}
QString makeUsage(const QString &prg_name)
{
QString text;
text += QObject::tr("Usage:") + QLatin1Char('\n');
#ifndef Q_OS_WIN
text += QLatin1Char('\t') + prg_name + QLatin1String(" (-v | --version)") + QLatin1Char('\n');
#endif
text += QLatin1Char('\t') + prg_name + QLatin1String(" (-h | --help)") + QLatin1Char('\n');
text += QLatin1Char('\t') + prg_name
+ QLatin1String(" [--webui-port=<port>]")
#ifndef DISABLE_GUI
+ QLatin1String(" [--no-splash]")
#else
+ QLatin1String(" [-d | --daemon]")
#endif
+ QLatin1String("[(<filename> | <url>)...]") + QLatin1Char('\n');
text += QObject::tr("Options:") + QLatin1Char('\n');
#ifndef Q_OS_WIN
text += QLatin1String("\t-v | --version\t\t") + QObject::tr("Displays program version") + QLatin1Char('\n');
#endif
text += QLatin1String("\t-h | --help\t\t") + QObject::tr("Displays this help message") + QLatin1Char('\n');
text += QLatin1String("\t--webui-port=<port>\t")
+ QObject::tr("Changes the Web UI port (current: %1)").arg(QString::number(Preferences::instance()->getWebUiPort()))
+ QLatin1Char('\n');
#ifndef DISABLE_GUI
text += QLatin1String("\t--no-splash\t\t") + QObject::tr("Disable splash screen") + QLatin1Char('\n');
#else
text += QLatin1String("\t-d | --daemon\t\t") + QObject::tr("Run in daemon-mode (background)") + QLatin1Char('\n');
#endif
text += QLatin1String("\tfiles or urls\t\t") + QObject::tr("Downloads the torrents passed by the user");
return text;
}
void displayUsage(const QString& prg_name)
{
#ifndef Q_OS_WIN
std::cout << qPrintable(makeUsage(prg_name)) << std::endl;
#else
QMessageBox msgBox(QMessageBox::Information, QObject::tr("Help"), makeUsage(prg_name), QMessageBox::Ok);
msgBox.show(); // Need to be shown or to moveToCenter does not work
msgBox.move(Utils::Misc::screenCenter(&msgBox));
msgBox.exec();
#endif
}
void displayBadArgMessage(const QString& message)
{
QString help = QObject::tr("Run application with -h option to read about command line parameters.");
#ifdef Q_OS_WIN
QMessageBox msgBox(QMessageBox::Critical, QObject::tr("Bad command line"),
message + QLatin1Char('\n') + help, QMessageBox::Ok);
msgBox.show(); // Need to be shown or to moveToCenter does not work
msgBox.move(Utils::Misc::screenCenter(&msgBox));
msgBox.exec();
#else
std::cerr << qPrintable(QObject::tr("Bad command line: "));
std::cerr << qPrintable(message) << std::endl;
std::cerr << qPrintable(help) << std::endl;
#endif
}
bool userAgreesWithLegalNotice()
{
Preferences* const pref = Preferences::instance();
if (pref->getAcceptedLegal()) // Already accepted once
return true;
#ifdef DISABLE_GUI
std::cout << std::endl << "*** " << qPrintable(QObject::tr("Legal Notice")) << " ***" << std::endl;
std::cout << qPrintable(QObject::tr("qBittorrent is a file sharing program. 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.\n\nNo further notices will be issued.")) << std::endl << std::endl;
std::cout << qPrintable(QObject::tr("Press %1 key to accept and continue...").arg("'y'")) << std::endl;
char ret = getchar(); // Read pressed key
if (ret == 'y' || ret == 'Y') {
// Save the answer
pref->setAcceptedLegal(true);
return true;
}
#else
QMessageBox msgBox;
msgBox.setText(QObject::tr("qBittorrent is a file sharing program. 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.\n\nNo further notices will be issued."));
msgBox.setWindowTitle(QObject::tr("Legal notice"));
msgBox.addButton(QObject::tr("Cancel"), QMessageBox::RejectRole);
QAbstractButton *agree_button = msgBox.addButton(QObject::tr("I Agree"), QMessageBox::AcceptRole);
msgBox.show(); // Need to be shown or to moveToCenter does not work
msgBox.move(Utils::Misc::screenCenter(&msgBox));
msgBox.exec();
if (msgBox.clickedButton() == agree_button) {
// Save the answer
pref->setAcceptedLegal(true);
return true;
}
#endif
return false;
}
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