Desktop Qt based XMPP messenger
https://macaw.me
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77 lines
2.0 KiB
77 lines
2.0 KiB
/* |
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* Squawk messenger. |
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* Copyright (C) 2019 Yury Gubich <blue@macaw.me> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "signalcatcher.h" |
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#include <signal.h> |
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#include <sys/socket.h> |
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#include <unistd.h> |
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int SignalCatcher::sigintFd[2] = {0,0}; |
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SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent): |
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QObject(parent), |
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app(p_app) |
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{ |
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if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigintFd)) |
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{ |
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qFatal("Couldn't create INT socketpair"); |
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} |
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if (setup_unix_signal_handlers() != 0) |
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{ |
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qFatal("Couldn't install unix handlers"); |
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} |
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snInt = new QSocketNotifier(sigintFd[1], QSocketNotifier::Read, this); |
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connect(snInt, &QSocketNotifier::activated, this, &SignalCatcher::handleSigInt); |
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} |
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SignalCatcher::~SignalCatcher() |
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{} |
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void SignalCatcher::handleSigInt() |
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{ |
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snInt->setEnabled(false); |
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char tmp; |
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::read(sigintFd[1], &tmp, sizeof(tmp)); |
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app->quit(); |
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snInt->setEnabled(true); |
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} |
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void SignalCatcher::intSignalHandler(int unused) |
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{ |
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char a = 1; |
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::write(sigintFd[0], &a, sizeof(a)); |
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} |
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int SignalCatcher::setup_unix_signal_handlers() |
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{ |
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struct sigaction s_int; |
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s_int.sa_handler = SignalCatcher::intSignalHandler; |
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sigemptyset(&s_int.sa_mask); |
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s_int.sa_flags = 0; |
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s_int.sa_flags |= SA_RESTART; |
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if (sigaction(SIGINT, &s_int, 0) > 0) |
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return 1; |
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return 0; |
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}
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