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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Authors: William Jon McCann <mccann@jhu.edu>
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <X11/Xlib.h>
#include <glib.h>
#include "ck-sysdeps.h"
static char *
get_tty_for_pid (int pid)
{
GError *error;
char *device;
gboolean res;
CkProcessStat *xorg_stat;
error = NULL;
res = ck_process_stat_new_for_unix_pid (pid, &xorg_stat, &error);
if (! res) {
if (error != NULL) {
g_warning ("stat on pid %d failed: %s", pid, error->message);
g_error_free (error);
}
/* keep the tty value */
return NULL;
}
device = ck_process_stat_get_tty (xorg_stat);
ck_process_stat_free (xorg_stat);
return device;
}
static Display *
display_init (const char *display_name)
{
Display *xdisplay;
if (display_name == NULL) {
display_name = g_getenv ("DISPLAY");
}
if (display_name == NULL) {
g_warning ("DISPLAY is not set");
exit (1);
}
xdisplay = XOpenDisplay (display_name);
if (xdisplay == NULL) {
g_warning ("cannot open display: %s", display_name ? display_name : "");
exit (1);
}
return xdisplay;
}
int
main (int argc,
char **argv)
{
int fd;
int ret;
Display *xdisplay;
static char *display = NULL;
GError *error;
GOptionContext *context;
static GOptionEntry entries [] = {
{ "display", 0, 0, G_OPTION_ARG_STRING, &display, "display name", NULL },
{ NULL }
};
ret = 1;
context = g_option_context_new (NULL);
g_option_context_add_main_entries (context, entries, NULL);
error = NULL;
ret = g_option_context_parse (context, &argc, &argv, &error);
g_option_context_free (context);
xdisplay = display_init (display);
fd = ConnectionNumber (xdisplay);
if (fd > 0) {
int pid;
char *device;
gboolean res;
ret = 0;
res = ck_get_socket_peer_credentials (fd, &pid, NULL, NULL);
if (res) {
if (pid > 0) {
device = get_tty_for_pid (pid);
if (device != NULL) {
printf ("%s\n", device);
g_free (device);
}
}
}
}
return ret;
}
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