-/* xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1991-1999 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
#include <X11/StringDefs.h>
#include <X11/Shell.h>
#include <X11/Xos.h>
+#include <netdb.h> /* for gethostbyname() */
#ifdef HAVE_XMU
# ifndef VMS
# include <X11/Xmu/Error.h>
#endif /* !HAVE_XMU */
#ifdef HAVE_XIDLE_EXTENSION
-#include <X11/extensions/xidle.h>
+# include <X11/extensions/xidle.h>
#endif /* HAVE_XIDLE_EXTENSION */
#include "xscreensaver.h"
#include "yarandom.h"
#include "resources.h"
#include "visual.h"
+#include "usleep.h"
saver_info *global_si_kludge = 0; /* I hate C so much... */
{ "-cycle", ".cycle", XrmoptionSepArg, 0 },
{ "-lock-mode", ".lock", XrmoptionNoArg, "on" },
{ "-no-lock-mode", ".lock", XrmoptionNoArg, "off" },
+ { "-no-lock", ".lock", XrmoptionNoArg, "off" },
{ "-lock-timeout", ".lockTimeout", XrmoptionSepArg, 0 },
{ "-lock-vts", ".lockVTs", XrmoptionNoArg, "on" },
{ "-no-lock-vts", ".lockVTs", XrmoptionNoArg, "off" },
{ "-no-mit-extension", ".mitSaverExtension",XrmoptionNoArg, "off" },
{ "-sgi-extension", ".sgiSaverExtension",XrmoptionNoArg, "on" },
{ "-no-sgi-extension", ".sgiSaverExtension",XrmoptionNoArg, "off" },
+ { "-proc-interrupts", ".procInterrupts", XrmoptionNoArg, "on" },
+ { "-no-proc-interrupts", ".procInterrupts", XrmoptionNoArg, "off" },
{ "-splash", ".splash", XrmoptionNoArg, "on" },
{ "-no-splash", ".splash", XrmoptionNoArg, "off" },
{ "-nosplash", ".splash", XrmoptionNoArg, "off" },
fflush (stdout);
fflush (stderr);
fprintf (stdout, "\
-xscreensaver %s, copyright (c) 1991-1998 by Jamie Zawinski <jwz@jwz.org>\n\
+xscreensaver %s, copyright (c) 1991-1999 by Jamie Zawinski <jwz@jwz.org>\n\
The standard Xt command-line options are accepted; other options include:\n\
\n\
-timeout <minutes> When the screensaver should activate.\n\
See the manual for other options and X resources.\n\
\n\
The `xscreensaver' program should be left running in the background.\n\
-Use the `xscreensaver-command' program to manipulate a running xscreensaver.\n\
+Use the `xscreensaver-demo' and `xscreensaver-command' programs to\n\
+manipulate a running xscreensaver.\n\
\n\
The `*programs' resource controls which graphics demos will be launched by\n\
the screensaver. See `man xscreensaver' or the web page for more details.\n\
Just getting started? Try this:\n\
\n\
xscreensaver &\n\
- xscreensaver-command -demo\n\
+ xscreensaver-demo\n\
\n\
For updates, check http://www.jwz.org/xscreensaver/\n\
\n",
{
saver_info *si = global_si_kludge; /* I hate C so much... */
+ if (!real_stderr) real_stderr = stderr;
+
fprintf (real_stderr, "\n"
"#######################################"
"#######################################\n\n"
}
else
{
- fprintf(real_stderr,
- "%s: to dump a core file, re-run with `-sync'.\n"
- "%s: see http://www.jwz.org/xscreensaver/bugs.html\n"
- "\t\tfor bug reporting information.\n\n",
- blurb(), blurb());
+ fprintf (real_stderr,
+ "#######################################"
+ "#######################################\n\n");
+ fprintf (real_stderr,
+ " If at all possible, please re-run xscreensaver with the command line\n"
+ " arguments `-sync -verbose', and reproduce this bug. That will cause\n"
+ " xscreensaver to dump a `core' file to the current directory. Please\n"
+ " include the stack trace from that core file in your bug report.\n"
+ "\n"
+ " http://www.jwz.org/xscreensaver/bugs.html explains how to create the\n"
+ " most useful bug reports, and how to examine core files.\n"
+ "\n"
+ " The more information you can provide, the better. But please report\n"
+ " report this bug, regardless!\n"
+ "\n");
+ fprintf (real_stderr,
+ "#######################################"
+ "#######################################\n\n");
+
saver_exit (si, -1, 0);
}
}
return 0;
}
-\f
-/* The zillions of initializations.
- */
-static void get_screenhacks (saver_info *si);
+/* This error handler is used only while the X connection is being set up;
+ after we've got a connection, we don't use this handler again. The only
+ reason for having this is so that we can present a more idiot-proof error
+ message than "cannot open display."
+ */
+static void
+startup_ehandler (String name, String type, String class,
+ String defalt, /* one can't even spel properly
+ in this joke of a language */
+ String *av, Cardinal *ac)
+{
+ char fmt[512];
+ String p[10];
+ saver_info *si = global_si_kludge; /* I hate C so much... */
+ XrmDatabase *db = XtAppGetErrorDatabase(si->app);
+ *fmt = 0;
+ XtAppGetErrorDatabaseText(si->app, name, type, class, defalt,
+ fmt, sizeof(fmt)-1, *db);
+
+ fprintf (stderr, "%s: ", blurb());
+
+ memset (p, 0, sizeof(p));
+ if (*ac > countof (p)) *ac = countof (p);
+ memcpy ((char *) p, (char *) av, (*ac) * sizeof(*av));
+ fprintf (stderr, fmt, /* Did I mention that I hate C? */
+ p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], p[9]);
+ fprintf (stderr, "\n");
+
+ describe_uids (si, stderr);
+ fprintf (stderr, "\n"
+ "%s: Errors at startup are usually authorization problems.\n"
+ " Did you read the manual? Specifically, the parts\n"
+ " that talk about XAUTH, XDM, and root logins?\n"
+ "\n"
+ " http://www.jwz.org/xscreensaver/man.html\n"
+ "\n",
+ blurb());
+ fflush (stderr);
+ fflush (stdout);
+ exit (1);
+}
+\f
+/* The zillions of initializations.
+ */
/* Set progname, version, etc. This is done very early.
*/
static void
privileged_initialization (saver_info *si, int *argc, char **argv)
{
+#ifndef NO_LOCKING
+ /* before hack_uid() for proper permissions */
+ lock_priv_init (*argc, argv, si->prefs.verbose_p);
+#endif /* NO_LOCKING */
+
+#ifndef NO_SETUID
+ hack_uid (si);
+#endif /* NO_SETUID */
+}
+
+
+/* Figure out what locking mechanisms are supported.
+ */
+static void
+lock_initialization (saver_info *si, int *argc, char **argv)
+{
#ifdef NO_LOCKING
si->locking_disabled_p = True;
si->nolock_reason = "not compiled with locking support";
#else /* !NO_LOCKING */
si->locking_disabled_p = False;
- if (! lock_init (*argc, argv)) /* before hack_uid() for proper permissions */
+
+ /* Finish initializing locking, now that we're out of privileged code. */
+ if (! lock_init (*argc, argv, si->prefs.verbose_p))
{
si->locking_disabled_p = True;
si->nolock_reason = "error getting password";
Widget toplevel_shell;
XSetErrorHandler (saver_ehandler);
+
+ XtAppSetErrorMsgHandler (si->app, startup_ehandler);
toplevel_shell = XtAppInitialize (&si->app, progclass,
options, XtNumber (options),
argc, argv, defaults, 0, 0);
+ XtAppSetErrorMsgHandler (si->app, 0);
si->dpy = XtDisplay (toplevel_shell);
- si->db = XtDatabase (si->dpy);
+ si->prefs.db = XtDatabase (si->dpy);
XtGetApplicationNameAndClass (si->dpy, &progname, &progclass);
if(strlen(progname) > 100) /* keep it short. */
progname [99] = 0;
- db = si->db; /* resources.c needs this */
+ db = si->prefs.db; /* resources.c needs this */
XA_VROOT = XInternAtom (si->dpy, "__SWM_VROOT", False);
XA_SCREENSAVER = XInternAtom (si->dpy, "SCREENSAVER", False);
/* no resource for this one, out of paranoia. */
si->prefs.debug_p = True;
- else if (!strcmp (argv[i], "-initial-demo-mode"))
- /* This isn't an advertized option; it is used internally to implement
- the "Reinitialize" button on the Demo Mode window. */
- si->demo_mode_p = True;
-
else if (!strcmp (argv[i], "-h") ||
!strcmp (argv[i], "-help") ||
!strcmp (argv[i], "--help"))
!strcmp (s, "-version") ||
!strcmp (s, "-time"))
{
- fprintf (stderr, "\n\
- However, %s is an option to the `xscreensaver-command' program.\n\
+
+ if (!strcmp (s, "-demo") || !strcmp (s, "-prefs"))
+ fprintf (stderr, "\n\
+ Perhaps you meant to run the `xscreensaver-demo' program instead?\n");
+ else
+ fprintf (stderr, "\n\
+ However, `%s' is an option to the `xscreensaver-command' program.\n", s);
+
+ fprintf (stderr, "\
The `xscreensaver' program is a daemon that runs in the background.\n\
You control a running xscreensaver process by sending it messages\n\
- with `xscreensaver-command'. See the man pages for details,\n\
- or check the web page: http://www.jwz.org/xscreensaver/\n\n",
- s);
+ with `xscreensaver-demo' or `xscreensaver-command'.\n\
+. See the man pages for details, or check the web page:\n\
+ http://www.jwz.org/xscreensaver/\n\n");
/* Since version 1.21 renamed the "-lock" option to "-lock-mode",
suggest that explicitly. */
Or perhaps you meant either the \"-lock-mode\" or the\n\
\"-lock-timeout <minutes>\" options to xscreensaver?\n\n");
}
+
exit (1);
}
}
if (p->verbose_p)
fprintf (stderr,
- "%s %s, copyright (c) 1991-1998 by Jamie Zawinski <jwz@jwz.org>\n"
- " pid = %d.\n",
- blurb(), si->version, (int) getpid ());
+ "%s %s, copyright (c) 1991-1999 "
+ "by Jamie Zawinski <jwz@jwz.org>.\n",
+ progname, si->version);
if (p->debug_p)
fprintf (stderr, "\n"
blurb(), si->orig_uid);
fprintf (stderr, "%s: %s\n", blurb(), si->uid_message);
}
+
+ fprintf (stderr, "%s: in process %lu.\n", blurb(),
+ (unsigned long) getpid());
}
/* If locking was not able to be initalized for some reason, explain why.
}
}
- si->fading_possible_p = found_any_writable_cells;
+ si->prefs.fading_possible_p = found_any_writable_cells;
}
-/* Populate `saver_preferences' with the contents of the resource database.
- Note that this may be called multiple times -- it is re-run each time
- the ~/.xscreensaver file is reloaded.
-
- This function can be very noisy, since it issues resource syntax errors
- and so on.
+/* If any server extensions have been requested, try and initialize them.
+ Issue warnings if requests can't be honored.
*/
-void
-get_resources (saver_info *si)
+static void
+initialize_server_extensions (saver_info *si)
{
- char *s;
saver_preferences *p = &si->prefs;
- if (si->init_file_date == 0)
- /* The date will be 0 the first time this is called; and when this is
- called subsequent times, the file will have already been reloaded. */
- read_init_file (si);
-
- p->xsync_p = get_boolean_resource ("synchronous", "Synchronous");
- if (p->xsync_p)
- XSynchronize(si->dpy, True);
-
- p->verbose_p = get_boolean_resource ("verbose", "Boolean");
- p->timestamp_p = get_boolean_resource ("timestamp", "Boolean");
- p->lock_p = get_boolean_resource ("lock", "Boolean");
- p->lock_vt_p = get_boolean_resource ("lockVTs", "Boolean");
- p->fade_p = get_boolean_resource ("fade", "Boolean");
- p->unfade_p = get_boolean_resource ("unfade", "Boolean");
- p->fade_seconds = 1000 * get_seconds_resource ("fadeSeconds", "Time");
- p->fade_ticks = get_integer_resource ("fadeTicks", "Integer");
- p->install_cmap_p = get_boolean_resource ("installColormap", "Boolean");
- p->nice_inferior = get_integer_resource ("nice", "Nice");
-
- p->initial_delay = 1000 * get_seconds_resource ("initialDelay", "Time");
- p->splash_duration = 1000 * get_seconds_resource ("splashDuration", "Time");
- p->timeout = 1000 * get_minutes_resource ("timeout", "Time");
- p->lock_timeout = 1000 * get_minutes_resource ("lockTimeout", "Time");
- p->cycle = 1000 * get_minutes_resource ("cycle", "Time");
- p->passwd_timeout = 1000 * get_seconds_resource ("passwdTimeout", "Time");
- p->pointer_timeout = 1000 * get_seconds_resource ("pointerPollTime", "Time");
- p->notice_events_timeout = 1000*get_seconds_resource("windowCreationTimeout",
- "Time");
- p->shell = get_string_resource ("bourneShell", "BourneShell");
-
- p->help_url = get_string_resource("helpURL", "URL");
- p->load_url_command = get_string_resource("loadURL", "LoadURL");
-
- if ((s = get_string_resource ("splash", "Boolean")))
- if (!get_boolean_resource("splash", "Boolean"))
- p->splash_duration = 0;
- if (s) free (s);
-
- if (p->verbose_p && !si->fading_possible_p && (p->fade_p || p->unfade_p))
- {
- fprintf (stderr,
- (si->nscreens == 1
- ? "%s: the screen has no PseudoColor or GrayScale visuals.\n"
- : "%s: no screens have PseudoColor or GrayScale visuals.\n"),
- blurb());
- fprintf (stderr, "%s: ignoring the request for fading/unfading.\n",
- blurb());
- }
-
- /* don't set use_xidle_extension unless it is explicitly specified */
- if ((s = get_string_resource ("xidleExtension", "Boolean")))
- p->use_xidle_extension = get_boolean_resource ("xidleExtension","Boolean");
- else
-#ifdef HAVE_XIDLE_EXTENSION /* pick a default */
- p->use_xidle_extension = True; /* if we have it, use it */
-#else /* !HAVE_XIDLE_EXTENSION */
- p->use_xidle_extension = False;
-#endif /* !HAVE_XIDLE_EXTENSION */
- if (s) free (s);
-
- /* don't set use_mit_extension unless it is explicitly specified */
- if ((s = get_string_resource ("mitSaverExtension", "Boolean")))
- p->use_mit_saver_extension = get_boolean_resource ("mitSaverExtension",
- "Boolean");
- else
-#ifdef HAVE_MIT_SAVER_EXTENSION /* pick a default */
- p->use_mit_saver_extension = False; /* Default false, because it sucks */
-#else /* !HAVE_MIT_SAVER_EXTENSION */
- p->use_mit_saver_extension = False;
-#endif /* !HAVE_MIT_SAVER_EXTENSION */
- if (s) free (s);
-
-
- /* don't set use_mit_extension unless it is explicitly specified */
- if ((s = get_string_resource ("sgiSaverExtension", "Boolean")))
- p->use_sgi_saver_extension = get_boolean_resource ("sgiSaverExtension",
- "Boolean");
- else
-#ifdef HAVE_SGI_SAVER_EXTENSION /* pick a default */
- p->use_sgi_saver_extension = True; /* if we have it, use it */
-#else /* !HAVE_SGI_SAVER_EXTENSION */
- p->use_sgi_saver_extension = False;
-#endif /* !HAVE_SGI_SAVER_EXTENSION */
- if (s) free (s);
+ Bool server_has_xidle_extension_p = False;
+ Bool server_has_sgi_saver_extension_p = False;
+ Bool server_has_mit_saver_extension_p = False;
+ Bool system_has_proc_interrupts_p = False;
+ const char *piwhy = 0;
+ si->using_xidle_extension = p->use_xidle_extension;
+ si->using_sgi_saver_extension = p->use_sgi_saver_extension;
+ si->using_mit_saver_extension = p->use_mit_saver_extension;
+ si->using_proc_interrupts = p->use_proc_interrupts;
- /* Throttle the various timeouts to reasonable values.
- */
- if (p->passwd_timeout == 0) p->passwd_timeout = 30000; /* 30 secs */
- if (p->timeout < 10000) p->timeout = 10000; /* 10 secs */
- if (p->cycle != 0 && p->cycle < 2000) p->cycle = 2000; /* 2 secs */
- if (p->pointer_timeout == 0) p->pointer_timeout = 5000; /* 5 secs */
- if (p->notice_events_timeout == 0)
- p->notice_events_timeout = 10000; /* 10 secs */
- if (p->fade_seconds == 0 || p->fade_ticks == 0)
- p->fade_p = False;
- if (! p->fade_p) p->unfade_p = False;
-
- p->watchdog_timeout = p->cycle;
- if (p->watchdog_timeout < 30000) p->watchdog_timeout = 30000; /* 30 secs */
- if (p->watchdog_timeout > 3600000) p->watchdog_timeout = 3600000; /* 1 hr */
-
- get_screenhacks (si);
+#ifdef HAVE_XIDLE_EXTENSION
+ server_has_xidle_extension_p = query_xidle_extension (si);
+#endif
+#ifdef HAVE_SGI_SAVER_EXTENSION
+ server_has_sgi_saver_extension_p = query_sgi_saver_extension (si);
+#endif
+#ifdef HAVE_MIT_SAVER_EXTENSION
+ server_has_mit_saver_extension_p = query_mit_saver_extension (si);
+#endif
+#ifdef HAVE_PROC_INTERRUPTS
+ system_has_proc_interrupts_p = query_proc_interrupts_available (si, &piwhy);
+#endif
- if (p->debug_p)
+ if (!server_has_xidle_extension_p)
+ si->using_xidle_extension = False;
+ else if (p->verbose_p)
{
- XSynchronize(si->dpy, True);
- p->xsync_p = True;
- p->verbose_p = True;
- p->timestamp_p = True;
- p->initial_delay = 0;
+ if (si->using_xidle_extension)
+ fprintf (stderr, "%s: using XIDLE extension.\n", blurb());
+ else
+ fprintf (stderr, "%s: not using server's XIDLE extension.\n", blurb());
}
- blurb_timestamp_p = p->timestamp_p;
-}
-
-
-/* If any server extensions have been requested, try and initialize them.
- Issue warnings if requests can't be honored.
- */
-static void
-initialize_server_extensions (saver_info *si)
-{
- saver_preferences *p = &si->prefs;
-
- if (p->use_sgi_saver_extension)
+ if (!server_has_sgi_saver_extension_p)
+ si->using_sgi_saver_extension = False;
+ else if (p->verbose_p)
{
-#ifdef HAVE_SGI_SAVER_EXTENSION
- if (! query_sgi_saver_extension (si))
- {
- fprintf (stderr,
- "%s: display %s does not support the SGI SCREEN_SAVER extension.\n",
- blurb(), DisplayString (si->dpy));
- p->use_sgi_saver_extension = False;
- }
- else if (p->use_mit_saver_extension)
- {
- fprintf (stderr,
- "%s: SGI SCREEN_SAVER extension used instead"
- " of MIT-SCREEN-SAVER extension.\n",
- blurb());
- p->use_mit_saver_extension = False;
- }
- else if (p->use_xidle_extension)
- {
- fprintf (stderr,
- "%s: SGI SCREEN_SAVER extension used instead of XIDLE extension.\n",
- blurb());
- p->use_xidle_extension = False;
- }
-#else /* !HAVE_MIT_SAVER_EXTENSION */
- fprintf (stderr,
- "%s: not compiled with support for the SGI SCREEN_SAVER"
- " extension.\n",
- blurb());
- p->use_sgi_saver_extension = False;
-#endif /* !HAVE_SGI_SAVER_EXTENSION */
+ if (si->using_sgi_saver_extension)
+ fprintf (stderr, "%s: using SGI SCREEN_SAVER extension.\n", blurb());
+ else
+ fprintf (stderr,
+ "%s: not using server's SGI SCREEN_SAVER extension.\n",
+ blurb());
}
- if (p->use_mit_saver_extension)
+ if (!server_has_mit_saver_extension_p)
+ si->using_mit_saver_extension = False;
+ else if (p->verbose_p)
{
-#ifdef HAVE_MIT_SAVER_EXTENSION
- if (! query_mit_saver_extension (si))
- {
- fprintf (stderr,
- "%s: display %s does not support the MIT-SCREEN-SAVER"
- " extension.\n",
- blurb(), DisplayString (si->dpy));
- p->use_mit_saver_extension = False;
- }
- else if (p->use_xidle_extension)
- {
- fprintf (stderr,
- "%s: MIT-SCREEN-SAVER extension used instead of XIDLE"
- " extension.\n",
- blurb());
- p->use_xidle_extension = False;
- }
-#else /* !HAVE_MIT_SAVER_EXTENSION */
- fprintf (stderr,
- "%s: not compiled with support for the MIT-SCREEN-SAVER"
- " extension.\n",
- blurb());
- p->use_mit_saver_extension = False;
-#endif /* !HAVE_MIT_SAVER_EXTENSION */
+ if (si->using_mit_saver_extension)
+ fprintf (stderr, "%s: using lame MIT-SCREEN-SAVER extension.\n",
+ blurb());
+ else
+ fprintf (stderr,
+ "%s: not using server's lame MIT-SCREEN-SAVER extension.\n",
+ blurb());
}
- if (p->use_xidle_extension)
+ if (!system_has_proc_interrupts_p)
{
-#ifdef HAVE_XIDLE_EXTENSION
- int first_event, first_error;
- if (! XidleQueryExtension (si->dpy, &first_event, &first_error))
- {
- fprintf (stderr,
- "%s: display %s does not support the XIdle extension.\n",
- blurb(), DisplayString (si->dpy));
- p->use_xidle_extension = False;
- }
-#else /* !HAVE_XIDLE_EXTENSION */
- fprintf (stderr, "%s: not compiled with support for XIdle.\n", blurb());
- p->use_xidle_extension = False;
-#endif /* !HAVE_XIDLE_EXTENSION */
+ si->using_proc_interrupts = False;
+ if (p->verbose_p && piwhy)
+ fprintf (stderr, "%s: not using /proc/interrupts: %s.\n", blurb(),
+ piwhy);
+ }
+ else if (p->verbose_p)
+ {
+ if (si->using_proc_interrupts)
+ fprintf (stderr,
+ "%s: consulting /proc/interrupts for keyboard activity.\n",
+ blurb());
+ else
+ fprintf (stderr,
+ "%s: not consulting /proc/interrupts for keyboard activity.\n",
+ blurb());
}
-
- if (p->verbose_p && p->use_mit_saver_extension)
- fprintf (stderr, "%s: using MIT-SCREEN-SAVER server extension.\n",
- blurb());
- if (p->verbose_p && p->use_sgi_saver_extension)
- fprintf (stderr, "%s: using SGI SCREEN_SAVER server extension.\n",
- blurb());
- if (p->verbose_p && p->use_xidle_extension)
- fprintf (stderr, "%s: using XIdle server extension.\n",
- blurb());
}
saver_preferences *p = &si->prefs;
int i;
- if (p->use_xidle_extension ||
- p->use_mit_saver_extension ||
- p->use_sgi_saver_extension)
+ if (si->using_xidle_extension ||
+ si->using_mit_saver_extension ||
+ si->using_sgi_saver_extension)
return;
- if (p->initial_delay && !si->demo_mode_p)
+ if (p->initial_delay)
{
if (p->verbose_p)
{
for window creation events, so that new subwindows will be noticed.
*/
for (i = 0; i < si->nscreens; i++)
- start_notice_events_timer (si, RootWindowOfScreen (si->screens[i].screen));
+ start_notice_events_timer (si, RootWindowOfScreen (si->screens[i].screen),
+ False);
if (p->verbose_p)
fprintf (stderr, " done.\n");
}
+void
+maybe_reload_init_file (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ if (init_file_changed_p (p))
+ {
+ if (p->verbose_p)
+ fprintf (stderr, "%s: file \"%s\" has changed, reloading.\n",
+ blurb(), init_file_name());
+
+ load_init_file (p);
+
+ /* If a server extension is in use, and p->timeout has changed,
+ we need to inform the server of the new timeout. */
+ disable_builtin_screensaver (si, False);
+ }
+}
+
+
/* Loop forever:
- wait until the user is idle;
main_loop (saver_info *si)
{
saver_preferences *p = &si->prefs;
+ Bool ok_to_unblank;
+
while (1)
{
- if (! si->demo_mode_p)
- sleep_until_idle (si, True);
+ sleep_until_idle (si, True);
+
+ if (p->verbose_p)
+ {
+ if (si->demoing_p)
+ fprintf (stderr, "%s: demoing %d at %s.\n", blurb(),
+ si->selection_mode, timestring());
+ else
+ if (p->verbose_p)
+ fprintf (stderr, "%s: blanking screen at %s.\n", blurb(),
+ timestring());
+ }
maybe_reload_init_file (si);
-#ifndef NO_DEMO_MODE
- if (si->demo_mode_p)
- demo_mode (si);
- else
-#endif /* !NO_DEMO_MODE */
- {
- if (p->verbose_p)
- fprintf (stderr, "%s: user is idle; waking up at %s.\n", blurb(),
- timestring());
- maybe_reload_init_file (si);
- blank_screen (si);
- spawn_screenhack (si, True);
- if (p->cycle)
- si->cycle_id = XtAppAddTimeOut (si->app, p->cycle, cycle_timer,
- (XtPointer) si);
+ if (! blank_screen (si))
+ {
+ /* We were unable to grab either the keyboard or mouse.
+ This means we did not (and must not) blank the screen.
+ If we were to blank the screen while some other program
+ is holding both the mouse and keyboard grabbed, then
+ we would never be able to un-blank it! We would never
+ see any events, and the display would be wedged.
-#ifndef NO_LOCKING
- if (p->lock_p &&
- !si->locking_disabled_p &&
- p->lock_timeout == 0)
- si->locked_p = True;
-
- if (p->lock_p && !si->locked_p)
- /* locked_p might be true already because of ClientMessage */
- si->lock_id = XtAppAddTimeOut (si->app, p->lock_timeout,
- activate_lock_timer,
- (XtPointer) si);
-#endif /* !NO_LOCKING */
+ So, just go around the loop again and wait for the
+ next bout of idleness.
+ */
+
+ fprintf (stderr,
+ "%s: unable to grab keyboard or mouse! Blanking aborted.\n",
+ blurb());
+ continue;
+ }
- PASSWD_INVALID:
+ kill_screenhack (si);
+ spawn_screenhack (si, True);
+
+ /* Don't start the cycle timer in demo mode. */
+ if (!si->demoing_p && p->cycle)
+ si->cycle_id = XtAppAddTimeOut (si->app, p->cycle, cycle_timer,
+ (XtPointer) si);
- sleep_until_idle (si, False); /* until not idle */
- maybe_reload_init_file (si);
#ifndef NO_LOCKING
- if (si->locked_p)
- {
- Bool val;
- if (si->locking_disabled_p) abort ();
- si->dbox_up_p = True;
-
- {
- saver_screen_info *ssi = si->default_screen;
- suspend_screenhack (si, True);
- XUndefineCursor (si->dpy, ssi->screensaver_window);
- if (p->verbose_p)
- fprintf (stderr, "%s: prompting for password.\n", blurb());
- val = unlock_p (si);
- if (p->verbose_p && val == False)
- fprintf (stderr, "%s: password incorrect!\n", blurb());
- si->dbox_up_p = False;
- XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor);
- suspend_screenhack (si, False);
- }
-
- if (! val)
- goto PASSWD_INVALID;
- si->locked_p = False;
- }
+ if (!si->demoing_p && /* if not going into demo mode */
+ p->lock_p && /* and locking is enabled */
+ !si->locking_disabled_p && /* and locking is possible */
+ p->lock_timeout == 0) /* and locking is not timer-deferred */
+ si->locked_p = True; /* then lock right now. */
+
+ /* locked_p might be true already because of the above, or because of
+ the LOCK ClientMessage. But if not, and if we're supposed to lock
+ after some time, set up a timer to do so.
+ */
+ if (p->lock_p &&
+ !si->locked_p &&
+ p->lock_timeout > 0)
+ si->lock_id = XtAppAddTimeOut (si->app, p->lock_timeout,
+ activate_lock_timer,
+ (XtPointer) si);
#endif /* !NO_LOCKING */
- if (p->verbose_p)
- fprintf (stderr, "%s: user is active at %s.\n",
- blurb(), timestring ());
- /* Let's kill it before unblanking, to get it to stop drawing as
- soon as possible... */
- kill_screenhack (si);
- unblank_screen (si);
- si->selection_mode = 0;
+ ok_to_unblank = True;
+ do {
- if (si->cycle_id)
- {
- XtRemoveTimeOut (si->cycle_id);
- si->cycle_id = 0;
- }
+ sleep_until_idle (si, False); /* until not idle */
+ maybe_reload_init_file (si);
#ifndef NO_LOCKING
- if (si->lock_id)
- {
- XtRemoveTimeOut (si->lock_id);
- si->lock_id = 0;
- }
+ if (si->locked_p)
+ {
+ saver_screen_info *ssi = si->default_screen;
+ if (si->locking_disabled_p) abort ();
+
+ si->dbox_up_p = True;
+ suspend_screenhack (si, True);
+ XUndefineCursor (si->dpy, ssi->screensaver_window);
+
+ ok_to_unblank = unlock_p (si);
+
+ si->dbox_up_p = False;
+ XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor);
+ suspend_screenhack (si, False); /* resume */
+ }
#endif /* !NO_LOCKING */
- if (p->verbose_p)
- fprintf (stderr, "%s: going to sleep.\n", blurb());
+ } while (!ok_to_unblank);
+
+
+ if (p->verbose_p)
+ fprintf (stderr, "%s: unblanking screen at %s.\n",
+ blurb(), timestring ());
+
+ /* Kill before unblanking, to stop drawing as soon as possible. */
+ kill_screenhack (si);
+ unblank_screen (si);
+
+ si->locked_p = False;
+ si->demoing_p = 0;
+ si->selection_mode = 0;
+
+ if (si->cycle_id)
+ {
+ XtRemoveTimeOut (si->cycle_id);
+ si->cycle_id = 0;
}
+
+ if (si->lock_id)
+ {
+ XtRemoveTimeOut (si->lock_id);
+ si->lock_id = 0;
+ }
+
+ if (p->verbose_p)
+ fprintf (stderr, "%s: awaiting idleness.\n", blurb());
}
}
+static void analyze_display (saver_info *si);
int
main (int argc, char **argv)
Widget shell;
saver_info the_si;
saver_info *si = &the_si;
+ saver_preferences *p = &si->prefs;
int i;
memset(si, 0, sizeof(*si));
srandom ((int) time ((time_t *) 0));
- set_version_string (si, &argc, argv);
save_argv (argc, argv);
+ set_version_string (si, &argc, argv);
privileged_initialization (si, &argc, argv);
hack_environment (si);
shell = connect_to_server (si, &argc, argv);
process_command_line (si, &argc, argv);
print_banner (si);
- initialize_per_screen_info (si, shell);
- get_resources (si);
+
+ initialize_per_screen_info (si, shell); /* also sets p->fading_possible_p */
for (i = 0; i < si->nscreens; i++)
if (ensure_no_screensaver_running (si->dpy, si->screens[i].screen))
exit (1);
+ load_init_file (p);
+ lock_initialization (si, &argc, argv);
+
+ if (p->xsync_p) XSynchronize (si->dpy, True);
+ blurb_timestamp_p = p->timestamp_p; /* kludge */
+
+ if (p->verbose_p) analyze_display (si);
initialize_server_extensions (si);
initialize_screensaver_window (si);
select_events (si);
disable_builtin_screensaver (si, True);
initialize_stderr (si);
- if (!si->demo_mode_p)
- make_splash_dialog (si);
+ make_splash_dialog (si);
main_loop (si); /* doesn't return */
return 0;
}
-\f
-/* Parsing the programs resource.
- */
-
-static char *
-reformat_hack (const char *hack)
-{
- int i;
- const char *in = hack;
- int indent = 13;
- char *h2 = (char *) malloc(strlen(in) + indent + 2);
- char *out = h2;
-
- while (isspace(*in)) in++; /* skip whitespace */
- while (*in && !isspace(*in) && *in != ':')
- *out++ = *in++; /* snarf first token */
- while (isspace(*in)) in++; /* skip whitespace */
-
- if (*in == ':')
- *out++ = *in++; /* copy colon */
- else
- {
- in = hack;
- out = h2; /* reset to beginning */
- }
-
- *out = 0;
-
- while (isspace(*in)) in++; /* skip whitespace */
- for (i = strlen(h2); i < indent; i++) /* indent */
- *out++ = ' ';
-
- /* copy the rest of the line. */
- while (*in)
- {
- /* shrink all whitespace to one space, for the benefit of the "demo"
- mode display. We only do this when we can easily tell that the
- whitespace is not significant (no shell metachars).
- */
- switch (*in)
- {
- case '\'': case '"': case '`': case '\\':
- {
- /* Metachars are scary. Copy the rest of the line unchanged. */
- while (*in)
- *out++ = *in++;
- }
- break;
- case ' ': case '\t':
- {
- while (*in == ' ' || *in == '\t')
- in++;
- *out++ = ' ';
- }
- break;
- default:
- *out++ = *in++;
- break;
- }
- }
- *out = 0;
-
- /* strip trailing whitespace. */
- out = out-1;
- while (out > h2 && (*out == ' ' || *out == '\t' || *out == '\n'))
- *out-- = 0;
-
- return h2;
-}
-
-
-static void
-get_screenhacks (saver_info *si)
-{
- saver_preferences *p = &si->prefs;
- int i = 0;
- int start = 0;
- int end = 0;
- int size;
- char *d;
-
- d = get_string_resource ("monoPrograms", "MonoPrograms");
- if (d && !*d) { free(d); d = 0; }
- if (!d)
- d = get_string_resource ("colorPrograms", "ColorPrograms");
- if (d && !*d) { free(d); d = 0; }
-
- if (d)
- {
- fprintf (stderr,
- "%s: the `monoPrograms' and `colorPrograms' resources are obsolete;\n\
- see the manual for details.\n", blurb());
- free(d);
- }
-
- d = get_string_resource ("programs", "Programs");
-
- if (p->screenhacks)
- {
- for (i = 0; i < p->screenhacks_count; i++)
- if (p->screenhacks[i])
- free (p->screenhacks[i]);
- free(p->screenhacks);
- p->screenhacks = 0;
- }
-
- if (!d || !*d)
- {
- p->screenhacks_count = 0;
- p->screenhacks = 0;
- return;
- }
-
- size = strlen (d);
-
-
- /* Count up the number of newlines (which will be equal to or larger than
- the number of hacks.)
- */
- i = 0;
- for (i = 0; d[i]; i++)
- if (d[i] == '\n')
- i++;
- i++;
-
- p->screenhacks = (char **) calloc (sizeof (char *), i+1);
-
- /* Iterate over the lines in `d' (the string with newlines)
- and make new strings to stuff into the `screenhacks' array.
- */
- p->screenhacks_count = 0;
- while (start < size)
- {
- /* skip forward over whitespace. */
- while (d[start] == ' ' || d[start] == '\t' || d[start] == '\n')
- start++;
-
- /* skip forward to newline or end of string. */
- end = start;
- while (d[end] != 0 && d[end] != '\n')
- end++;
-
- /* null terminate. */
- d[end] = 0;
-
- p->screenhacks[p->screenhacks_count++] = reformat_hack (d + start);
- if (p->screenhacks_count >= i)
- abort();
-
- start = end+1;
- }
-
- if (p->screenhacks_count == 0)
- {
- free (p->screenhacks);
- p->screenhacks = 0;
- }
-}
-
-
\f
/* Processing ClientMessage events.
*/
L++;
XChangeProperty (si->dpy, w, XA_SCREENSAVER_RESPONSE, XA_STRING, 8,
- PropModeReplace, proto, L);
+ PropModeReplace, (unsigned char *) proto, L);
XSync (si->dpy, False);
free (proto);
}
Bool
handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p)
{
- saver_preferences *p = &si->prefs;
Atom type = 0;
Window window = event->xclient.window;
"ACTIVATE ClientMessage received.",
"activating.");
si->selection_mode = 0;
- if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ si->demoing_p = False;
+ if (si->using_mit_saver_extension || si->using_sgi_saver_extension)
{
XForceScreenSaver (si->dpy, ScreenSaverActive);
return False;
clientmessage_response(si, window, False,
"DEACTIVATE ClientMessage received.",
"deactivating.");
- if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ if (si->using_mit_saver_extension || si->using_sgi_saver_extension)
{
XForceScreenSaver (si->dpy, ScreenSaverReset);
return False;
"CYCLE ClientMessage received.",
"cycling.");
si->selection_mode = 0; /* 0 means randomize when its time. */
+ si->demoing_p = False;
if (si->cycle_id)
XtRemoveTimeOut (si->cycle_id);
si->cycle_id = 0;
: "PREV ClientMessage received."),
"cycling.");
si->selection_mode = (type == XA_NEXT ? -1 : -2);
+ si->demoing_p = False;
if (! until_idle_p)
{
if (which < 0) which = 0; /* 0 == "random" */
si->selection_mode = which;
+ si->demoing_p = False;
if (! until_idle_p)
{
}
else if (type == XA_DEMO)
{
-#ifdef NO_DEMO_MODE
- clientmessage_response (si, window, True,
- "not compiled with support for DEMO mode.",
- "demo mode not enabled.");
-#else /* !NO_DEMO_MODE */
- if (until_idle_p)
+ long arg = event->xclient.data.l[1];
+ Bool demo_one_hack_p = (arg == 300);
+
+ if (demo_one_hack_p)
{
- clientmessage_response (si, window, False,
- "DEMO ClientMessage received.",
- "Demo mode.");
- si->demo_mode_p = True;
- return True;
+ if (until_idle_p)
+ {
+ long which = event->xclient.data.l[2];
+ char buf [255];
+ char buf2 [255];
+ sprintf (buf, "DEMO %ld ClientMessage received.", which);
+ sprintf (buf2, "demoing (%ld).", which);
+ clientmessage_response (si, window, False, buf, buf2);
+
+ if (which < 0) which = 0; /* 0 == "random" */
+ si->selection_mode = which;
+ si->demoing_p = True;
+
+ return True;
+ }
+
+ clientmessage_response (si, window, True,
+ "DEMO ClientMessage received while active.",
+ "already active.");
+ }
+ else
+ {
+ clientmessage_response (si, window, True,
+ "obsolete form of DEMO ClientMessage.",
+ "obsolete form of DEMO ClientMessage.");
}
- clientmessage_response (si, window, True,
- "DEMO ClientMessage received while active.",
- "already active.");
-#endif /* !NO_DEMO_MODE */
}
else if (type == XA_PREFS)
{
-#ifdef NO_DEMO_MODE
clientmessage_response (si, window, True,
- "not compiled with support for DEMO mode.",
- "preferences mode not enabled.");
-#else /* !NO_DEMO_MODE */
- if (until_idle_p)
- {
- clientmessage_response (si, window, False,
- "PREFS ClientMessage received.",
- "preferences mode.");
- si->demo_mode_p = (Bool) 2; /* kludge, so sue me. */
- return True;
- }
- clientmessage_response (si, window, True,
- "PREFS ClientMessage received while active.",
- "already active.");
-#endif /* !NO_DEMO_MODE */
+ "the PREFS client-message is obsolete.",
+ "the PREFS client-message is obsolete.");
}
else if (type == XA_LOCK)
{
: "locking.");
si->locked_p = True;
si->selection_mode = 0;
+ si->demoing_p = False;
sprintf (buf, "LOCK ClientMessage received; %s", response);
clientmessage_response (si, window, False, buf, response);
if (until_idle_p)
{
- if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ if (si->using_mit_saver_extension ||
+ si->using_sgi_saver_extension)
{
XForceScreenSaver (si->dpy, ScreenSaverActive);
return False;
}
return False;
}
+
+\f
+/* Some random diagnostics printed in -verbose mode.
+ */
+
+static void
+analyze_display (saver_info *si)
+{
+ int i, j;
+ static const char *exts[][2] = {
+ { "SCREEN_SAVER", "SGI Screen-Saver" },
+ { "SCREEN-SAVER", "SGI Screen-Saver" },
+ { "MIT-SCREEN-SAVER", "MIT Screen-Saver" },
+ { "XIDLE", "XIdle" },
+ { "SGI-VIDEO-CONTROL", "SGI Video-Control" },
+ { "READDISPLAY", "SGI Read-Display" },
+ { "MIT-SHM", "Shared Memory" },
+ { "DOUBLE-BUFFER", "Double-Buffering" },
+ { "DPMS", "Power Management" },
+ { "GLX", "GLX" }
+ };
+
+ fprintf (stderr, "%s: running on display \"%s\"\n", blurb(),
+ DisplayString(si->dpy));
+ fprintf (stderr, "%s: vendor is %s, %d\n", blurb(),
+ ServerVendor(si->dpy), VendorRelease(si->dpy));
+
+ fprintf (stderr, "%s: useful extensions:\n", blurb());
+ for (i = 0; i < countof(exts); i++)
+ {
+ int op = 0, event = 0, error = 0;
+ if (XQueryExtension (si->dpy, exts[i][0], &op, &event, &error))
+ fprintf (stderr, "%s: %s\n", blurb(), exts[i][1]);
+ }
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ unsigned long colormapped_depths = 0;
+ unsigned long non_mapped_depths = 0;
+ XVisualInfo vi_in, *vi_out;
+ int out_count;
+ vi_in.screen = i;
+ vi_out = XGetVisualInfo (si->dpy, VisualScreenMask, &vi_in, &out_count);
+ if (!vi_out) continue;
+ for (j = 0; j < out_count; j++)
+ if (vi_out[j].class == PseudoColor)
+ colormapped_depths |= (1 << vi_out[j].depth);
+ else
+ non_mapped_depths |= (1 << vi_out[j].depth);
+ XFree ((char *) vi_out);
+
+ if (colormapped_depths)
+ {
+ fprintf (stderr, "%s: screen %d colormapped depths:", blurb(), i);
+ for (j = 0; j < 32; j++)
+ if (colormapped_depths & (1 << j))
+ fprintf (stderr, " %d", j);
+ fprintf (stderr, "\n");
+ }
+ if (non_mapped_depths)
+ {
+ fprintf (stderr, "%s: screen %d non-mapped depths:", blurb(), i);
+ for (j = 0; j < 32; j++)
+ if (non_mapped_depths & (1 << j))
+ fprintf (stderr, " %d", j);
+ fprintf (stderr, "\n");
+ }
+ }
+}
+
+Bool
+display_is_on_console_p (saver_info *si)
+{
+ Bool not_on_console = True;
+ char *dpystr = DisplayString (si->dpy);
+ char *tail = (char *) strchr (dpystr, ':');
+ if (! tail || strncmp (tail, ":0", 2))
+ not_on_console = True;
+ else
+ {
+ char dpyname[255], localname[255];
+ strncpy (dpyname, dpystr, tail-dpystr);
+ dpyname [tail-dpystr] = 0;
+ if (!*dpyname ||
+ !strcmp(dpyname, "unix") ||
+ !strcmp(dpyname, "localhost"))
+ not_on_console = False;
+ else if (gethostname (localname, sizeof (localname)))
+ not_on_console = True; /* can't find hostname? */
+ else
+ {
+ /* We have to call gethostbyname() on the result of gethostname()
+ because the two aren't guarenteed to be the same name for the
+ same host: on some losing systems, one is a FQDN and the other
+ is not. Here in the wide wonderful world of Unix it's rocket
+ science to obtain the local hostname in a portable fashion.
+
+ And don't forget, gethostbyname() reuses the structure it
+ returns, so we have to copy the fucker before calling it again.
+ Thank you master, may I have another.
+ */
+ struct hostent *h = gethostbyname (dpyname);
+ if (!h)
+ not_on_console = True;
+ else
+ {
+ char hn [255];
+ struct hostent *l;
+ strcpy (hn, h->h_name);
+ l = gethostbyname (localname);
+ not_on_console = (!l || !!(strcmp (l->h_name, hn)));
+ }
+ }
+ }
+ return !not_on_console;
+}