[dwm] building an autolock with sinac

[Christian Dietrich]

Hi,
i searched for a replacement for the autolock feature of xscreensaver with
slock. So i worked on an older piece of code, written by a friend of me.
The result is sinac (simple inactive). Which can print out the inactive
time of the X session or wait until the inactive timer has reached an
specific value.

Sinac uses the xscreensaver x extention, so you have to install
libxss-dev. You can compile the attached sinac.c file with:

gcc sinac.c -L/usr/X11R6/lib -lX11 -lXss -lXext -o sinac

And now lets build an autolocker with sinac & slock:

while true; do ./sinac -w 300 && slock; done

greetz
  didi

-- 
No documentation is better than bad documentation

/*****************************************************************************
 *
 * xidletime
 *
 * derived from xautolock supplied by
 * Authors: Michel Eyckmans (MCE) & Stefan De Troch (SDT)
 *
 * --------------------------------------------------------------------------
 * 
 * Copyright 1990,1992-1999,2001-2002 by Stefan De Troch and Michel Eyckmans.
 * Copyright 2005 by Stefan Siegl <[EMAIL PROTECTED]>
 * Copyright 2007 by Christian Dietrich <[EMAIL PROTECTED]>
 * 
 * Versions 2.0 and above of xautolock are available under version 2 of the
 * GNU GPL. 
 * 
 *****************************************************************************/

#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/Xresource.h>

#include <X11/extensions/scrnsaver.h>

#include <stdio.h>

#define VERSION "0.1"
  
static XScreenSaverInfo* xss_info = 0; 

int 
seconds_idle(Display *d)
{
  if (! xss_info ) 
    xss_info = XScreenSaverAllocInfo();
  XScreenSaverQueryInfo(d, DefaultRootWindow(d), xss_info);
  return xss_info->idle / 1000;

}

int
main (int argc, char* argv[])
{
  Display* d;
  Time idleTime;


  if (!(d = XOpenDisplay (0))) {
    fprintf (stderr, "Couldn't connect to %s\n", XDisplayName (0));
    return 1;
  }
  (void) XSync (d, 0);

  if (argc == 1)
    fprintf(stdout, "%ld\n", seconds_idle(d));

  int i;
  for (i = 1; i < argc; i++) {
    if (strcmp(argv[i], "-w") == 0 && argv[i+1]) {
      int wait = atoi(argv[++i]); 
      while (seconds_idle(d) < wait)
        usleep(500000);
    }
    else if (strcmp(argv[i], "-s") == 0 && argv[i+1]) 
      usleep(1000000 * atoi(argv[++i]));
    else if (strcmp(argv[i], "-p") == 0) 
      fprintf(stdout, "%ld\n", seconds_idle(d));
    else {
      fprintf(stderr, "sinac - " VERSION ": %s [-w <seconds>] [-p] [-s 
<seconds>]\n",
              argv[0]);
      return 1;
    }
  }

  return 0;
}

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