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/*
* Copyright (C) 2010 Michael Buesch <m@bues.ch>
*
* 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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <X11/Xlib.h>
static Display *display;
static void signal_handler(int signal)
{
XUngrabKeyboard(display, CurrentTime);
XUngrabPointer(display, CurrentTime);
XSync(display, True);
printf("pwrtray-xlock: released\n");
exit(0);
}
static int install_sighandler(int signal, void (*handler)(int))
{
struct sigaction act;
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = handler;
return sigaction(signal, &act, NULL);
}
int main(int argc, char **argv)
{
Window window;
int res;
sigset_t sigset;
display = XOpenDisplay(NULL);
if (!display) {
/* Fallback to the first display. */
display = XOpenDisplay(":0");
if (!display) {
fprintf(stderr, "Failed to open DISPLAY\n");
return 1;
}
}
window = DefaultRootWindow(display);
sigemptyset(&sigset);
res = sigprocmask(SIG_SETMASK, &sigset, NULL);
res |= install_sighandler(SIGINT, signal_handler);
res |= install_sighandler(SIGTERM, signal_handler);
if (res) {
fprintf(stderr, "Failed to setup signal handlers\n");
return 1;
}
res = XGrabPointer(display, window,
False, 0, GrabModeAsync, GrabModeAsync,
None, None, CurrentTime);
if (res != GrabSuccess) {
fprintf(stderr, "Failed to grab pointer (res=%d)\n", res);
return 1;
}
res = XGrabKeyboard(display, window,
False, GrabModeAsync, GrabModeAsync,
CurrentTime);
if (res != GrabSuccess) {
fprintf(stderr, "Failed to grab keyboard (res=%d)\n", res);
XUngrabPointer(display, CurrentTime);
return 1;
}
XFlush(display);
printf("pwrtray-xlock: locked\n");
while (1)
sleep(0xFFFF);
}
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