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/* communications.c -- Send commands to a running copy of ratpoison.
* Copyright (C) 2000, 2001 Shawn Betts
*
* This file is part of ratpoison.
*
* ratpoison 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, or (at your option)
* any later version.
*
* ratpoison 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.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include "ratpoison.h"
void
send_restart ()
{
XEvent ev;
int status;
ev.xclient.type = ClientMessage;
ev.xclient.window = DefaultRootWindow (dpy);
ev.xclient.message_type = rp_restart;
ev.xclient.format = 32;
ev.xclient.data.l[0] = rp_restart;
ev.xclient.data.l[1] = CurrentTime;
status = XSendEvent (dpy, DefaultRootWindow (dpy), False, SubstructureRedirectMask, &ev);
if (status == 0)
{
PRINT_ERROR ("failed to send restart event\n");
}
}
void
send_kill ()
{
XEvent ev;
int status;
ev.xclient.type = ClientMessage;
ev.xclient.window = DefaultRootWindow (dpy);
ev.xclient.message_type = rp_kill;
ev.xclient.format = 32;
ev.xclient.data.l[0] = rp_kill;
ev.xclient.data.l[1] = CurrentTime;
status = XSendEvent (dpy, DefaultRootWindow (dpy), False, SubstructureRedirectMask, &ev);
if (status == 0)
{
PRINT_ERROR ("failed to send kill event\n");
}
}
/* Sending commands to ratpoison */
static void
recieve_command_result (Window w)
{
Atom type_ret;
int format_ret;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *result;
if (XGetWindowProperty (dpy, w, rp_command_result,
0, 0, False, XA_STRING,
&type_ret, &format_ret, &nitems, &bytes_after,
&result) == Success
&&
XGetWindowProperty (dpy, w, rp_command_result,
0, (bytes_after / 4) + (bytes_after % 4 ? 1 : 0),
True, XA_STRING, &type_ret, &format_ret, &nitems,
&bytes_after, &result) == Success)
{
if (result)
{
printf ("%s\n", result);
}
XFree (result);
}
}
int
send_command (unsigned char *cmd)
{
Window w;
int done = 0;
w = XCreateSimpleWindow (dpy, DefaultRootWindow (dpy),
0, 0, 1, 1, 0, 0, 0);
// Select first to avoid race condition
XSelectInput (dpy, w, PropertyChangeMask);
XChangeProperty (dpy, w, rp_command, XA_STRING,
8, PropModeReplace, cmd, strlen (cmd) + 1);
XChangeProperty (dpy, DefaultRootWindow (dpy),
rp_command_request, XA_WINDOW,
8, PropModeAppend, (unsigned char *)&w, sizeof (Window));
while (!done)
{
XEvent ev;
XMaskEvent (dpy, PropertyChangeMask, &ev);
if (ev.xproperty.atom == rp_command_result
&& ev.xproperty.state == PropertyNewValue)
{
recieve_command_result(ev.xproperty.window);
done = 1;
}
}
XDestroyWindow (dpy, w);
return 1;
}
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