Accounts saving, tree status, sigint catching

signalcatcher.cpp

@@ -0,0 +1,59 @@
+#include "signalcatcher.h"
+#include <signal.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+int SignalCatcher::sigintFd[2] = {0,0};
+
+SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
+    QObject(parent),
+    app(p_app)
+{
+    if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigintFd))
+    {
+        qFatal("Couldn't create INT socketpair");
+    }
+    
+    if (setup_unix_signal_handlers() != 0) 
+    {
+        qFatal("Couldn't install unix handlers");
+    }
+    
+    snInt = new QSocketNotifier(sigintFd[1], QSocketNotifier::Read, this);
+    connect(snInt, SIGNAL(activated(int)), this, SLOT(handleSigInt()));
+}
+
+SignalCatcher::~SignalCatcher()
+{}
+
+void SignalCatcher::handleSigInt()
+{
+    snInt->setEnabled(false);
+    char tmp;
+    ::read(sigintFd[1], &tmp, sizeof(tmp));
+
+    app->quit();
+
+    snInt->setEnabled(true);
+}
+
+void SignalCatcher::intSignalHandler(int unused)
+{
+    char a = 1;
+    ::write(sigintFd[0], &a, sizeof(a));
+}
+
+int SignalCatcher::setup_unix_signal_handlers()
+{
+    struct sigaction s_int;
+
+    s_int.sa_handler = SignalCatcher::intSignalHandler;
+    sigemptyset(&s_int.sa_mask);
+    s_int.sa_flags = 0;
+    s_int.sa_flags |= SA_RESTART;
+
+    if (sigaction(SIGINT, &s_int, 0) > 0)
+       return 1;
+
+    return 0;
+}