kwin/helpers/killer/killer.cpp

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/*
SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
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SPDX-License-Identifier: MIT
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*/
#include <KMessageBox>
#include <KLocalizedString>
#include <KAuth/KAuthAction>
#include <QApplication>
#include <QCommandLineParser>
#include <QDebug>
#include <QProcess>
#include <QtX11Extras/QX11Info>
#include <xcb/xcb.h>
#include <cerrno>
#include <csignal>
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int main(int argc, char* argv[])
{
KLocalizedString::setApplicationDomain("kwin");
qputenv("QT_QPA_PLATFORM", QByteArrayLiteral("xcb"));
QApplication app(argc, argv);
app.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
QApplication::setWindowIcon(QIcon::fromTheme(QStringLiteral("dialog-warning")));
QCoreApplication::setApplicationName(QStringLiteral("kwin_killer_helper"));
QCoreApplication::setOrganizationDomain(QStringLiteral("kde.org"));
QApplication::setApplicationDisplayName(i18n("Window Manager"));
QCoreApplication::setApplicationVersion(QStringLiteral("1.0"));
QCommandLineOption pidOption(QStringLiteral("pid"),
i18n("PID of the application to terminate"), i18n("pid"));
QCommandLineOption hostNameOption(QStringLiteral("hostname"),
i18n("Hostname on which the application is running"), i18n("hostname"));
QCommandLineOption windowNameOption(QStringLiteral("windowname"),
i18n("Caption of the window to be terminated"), i18n("caption"));
QCommandLineOption applicationNameOption(QStringLiteral("applicationname"),
i18n("Name of the application to be terminated"), i18n("name"));
QCommandLineOption widOption(QStringLiteral("wid"),
i18n("ID of resource belonging to the application"), i18n("id"));
QCommandLineOption timestampOption(QStringLiteral("timestamp"),
i18n("Time of user action causing termination"), i18n("time"));
QCommandLineParser parser;
parser.setApplicationDescription(i18n("KWin helper utility"));
parser.addHelpOption();
parser.addVersionOption();
parser.addOption(pidOption);
parser.addOption(hostNameOption);
parser.addOption(windowNameOption);
parser.addOption(applicationNameOption);
parser.addOption(widOption);
parser.addOption(timestampOption);
parser.process(app);
QString hostname = parser.value(hostNameOption);
bool pid_ok = false;
pid_t pid = parser.value(pidOption).toULong(&pid_ok);
QString caption = parser.value(windowNameOption);
QString appname = parser.value(applicationNameOption);
bool id_ok = false;
xcb_window_t id = parser.value(widOption).toULong(&id_ok);
bool time_ok = false;
xcb_timestamp_t timestamp = parser.value(timestampOption).toULong(&time_ok);
if (!pid_ok || pid == 0 || !id_ok || id == XCB_WINDOW_NONE || !time_ok || timestamp == XCB_TIME_CURRENT_TIME
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|| hostname.isEmpty() || caption.isEmpty() || appname.isEmpty()) {
fprintf(stdout, "%s\n", qPrintable(i18n("This helper utility is not supposed to be called directly.")));
parser.showHelp(1);
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}
bool isLocal = hostname == QStringLiteral("localhost");
caption = caption.toHtmlEscaped();
appname = appname.toHtmlEscaped();
hostname = hostname.toHtmlEscaped();
QString pidString = QString::number(pid); // format pid ourself as it does not make sense to format an ID according to locale settings
QString question = i18nc("@info", "<b>Application \"%1\" is not responding</b>", appname);
question += isLocal
? xi18nc("@info", "<p>You tried to close window \"%1\" from application \"%2\" (Process ID: %3) but the application is not responding.</p>",
caption, appname, pidString)
: xi18nc("@info", "<p>You tried to close window \"%1\" from application \"%2\" (Process ID: %3), running on host \"%4\", but the application is not responding.</p>",
caption, appname, pidString, hostname);
question += xi18nc("@info",
"<p>Do you want to terminate this application?</p>"
"<p><warning>Terminating the application will close all of its child windows. Any unsaved data will be lost.</warning></p>"
);
KGuiItem continueButton = KGuiItem(i18n("&Terminate Application %1", appname), QStringLiteral("edit-bomb"));
KGuiItem cancelButton = KGuiItem(i18n("Wait Longer"), QStringLiteral("chronometer"));
QX11Info::setAppUserTime(timestamp);
if (KMessageBox::warningContinueCancelWId(id, question, QString(), continueButton, cancelButton) == KMessageBox::Continue) {
if (!isLocal) {
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QStringList lst;
lst << hostname << QStringLiteral("kill") << QString::number(pid);
QProcess::startDetached(QStringLiteral("xon"), lst);
} else {
if (::kill(pid, SIGKILL) && errno == EPERM) {
KAuth::Action killer(QStringLiteral("org.kde.ksysguard.processlisthelper.sendsignal"));
killer.setHelperId(QStringLiteral("org.kde.ksysguard.processlisthelper"));
killer.addArgument(QStringLiteral("pid0"), pid);
killer.addArgument(QStringLiteral("pidcount"), 1);
killer.addArgument(QStringLiteral("signal"), SIGKILL);
if (killer.isValid()) {
qDebug() << "Using KAuth to kill pid: " << pid;
killer.execute();
} else {
qDebug() << "KWin process killer action not valid";
}
}
}
}
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}