/* Initializations that potentially take place as a priveleged user:
If the executable is setuid root, then these initializations
are run as root, before discarding privileges.
*/
static gboolean
privileged_initialization (void)
{
gboolean ret;
char *nolock_reason;
char *orig_uid;
char *uid_message;
#ifndef NO_LOCKING
/* before hack_uid () for proper permissions */
gs_auth_priv_init ();
#endif /* NO_LOCKING */
ret = hack_uid (&nolock_reason,
&orig_uid,
&uid_message);
if (nolock_reason)
{
g_warning ("Locking disabled: %s", nolock_reason);
}
if (uid_message && gs_auth_get_verbose ())
{
g_print ("Modified UID: %s", uid_message);
}
g_free (nolock_reason);
g_free (orig_uid);
g_free (uid_message);
return ret;
}
int
main (int argc, char **argv)
{
enum { PASS, SPLASH, TTY } which;
Widget toplevel_shell = 0;
saver_screen_info ssip;
saver_info sip;
saver_info *si = &sip;
saver_preferences *p = &si->prefs;
struct passwd *pw;
memset(&sip, 0, sizeof(sip));
memset(&ssip, 0, sizeof(ssip));
si->nscreens = 1;
si->screens = si->default_screen = &ssip;
ssip.global = si;
global_si_kludge = si;
real_stderr = stderr;
real_stdout = stdout;
si->version = (char *) malloc (5);
memcpy (si->version, screensaver_id + 17, 4);
si->version[4] = 0;
progname = argv[0];
{
char *s = strrchr(progname, '/');
if (*s) strcpy (progname, s+1);
}
if (argc != 2) goto USAGE;
else if (!strcmp (argv[1], "pass")) which = PASS;
else if (!strcmp (argv[1], "splash")) which = SPLASH;
else if (!strcmp (argv[1], "tty")) which = TTY;
else
{
USAGE:
fprintf (stderr, "usage: %s [ pass | splash | tty ]\n", progname);
exit (1);
}
#ifdef NO_LOCKING
if (which == PASS || which == TTY)
{
fprintf (stderr, "%s: compiled with NO_LOCKING\n", progname);
exit (1);
}
#endif
#ifndef NO_LOCKING
/* before hack_uid() for proper permissions */
lock_priv_init (argc, argv, True);
hack_uid (si);
if (! lock_init (argc, argv, True))
{
si->locking_disabled_p = True;
si->nolock_reason = "error getting password";
}
#endif
progclass = "XScreenSaver";
if (!setlocale (LC_CTYPE, ""))
fprintf (stderr, "%s: warning: could not set default locale\n",
progname);
if (which != TTY)
{
toplevel_shell = XtAppInitialize (&si->app, progclass, 0, 0,
&argc, argv, fallback,
0, 0);
si->dpy = XtDisplay (toplevel_shell);
p->db = XtDatabase (si->dpy);
si->default_screen->toplevel_shell = toplevel_shell;
si->default_screen->screen = XtScreen(toplevel_shell);
si->default_screen->default_visual =
si->default_screen->current_visual =
DefaultVisualOfScreen(si->default_screen->screen);
si->default_screen->screensaver_window =
RootWindowOfScreen(si->default_screen->screen);
si->default_screen->current_depth =
visual_depth(si->default_screen->screen,
si->default_screen->current_visual);
ssip.width = WidthOfScreen(ssip.screen);
ssip.height = HeightOfScreen(ssip.screen);
db = p->db;
XtGetApplicationNameAndClass (si->dpy, &progname, &progclass);
load_init_file (si->dpy, &si->prefs);
}
p->verbose_p = True;
pw = getpwuid (getuid ());
si->user = strdup (pw->pw_name);
/* si->nscreens = 0;
si->screens = si->default_screen = 0; */
while (1)
{
#ifndef NO_LOCKING
if (which == PASS)
{
si->unlock_cb = gui_auth_conv;
si->auth_finished_cb = auth_finished_cb;
debug_passwd_window_p = True;
xss_authenticate(si, True);
if (si->unlock_state == ul_success)
fprintf (stderr, "%s: authentication succeeded\n", progname);
else
fprintf (stderr, "%s: authentication FAILED!\n", progname);
XSync(si->dpy, False);
fprintf (stderr, "\n######################################\n\n");
sleep (3);
}
else
#endif
if (which == SPLASH)
{
XEvent event;
make_splash_dialog (si);
XtAppAddTimeOut (si->app, p->splash_duration + 1000,
idle_timer, (XtPointer) si);
while (si->splash_dialog)
{
XtAppNextEvent (si->app, &event);
if (event.xany.window == si->splash_dialog)
handle_splash_event (si, &event);
XtDispatchEvent (&event);
}
XSync (si->dpy, False);
sleep (1);
}
#ifndef NO_LOCKING
else if (which == TTY)
{
si->unlock_cb = text_auth_conv;
printf ("%s: Authenticating user %s\n", progname, si->user);
xss_authenticate(si, True);
if (si->unlock_state == ul_success)
printf ("%s: Ok!\n", progname);
else
printf ("%s: Wrong!\n", progname);
}
#endif
else
abort();
}
free(si->user);
}
