-/* xscreensaver, Copyright (c) 1991-1994 Jamie Zawinski <jwz@lucid.com>
+/* xscreensaver, Copyright (c) 1991-1998 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
* implied warranty.
*/
-#include "version.h"
-
/* ========================================================================
* First we wait until the keyboard and mouse become idle for the specified
- * amount of time. We do this by periodically checking with the XIdle
- * server extension.
+ * amount of time. We do this in one of three different ways: periodically
+ * checking with the XIdle server extension; selecting key and mouse events
+ * on (nearly) all windows; or by waiting for the MIT-SCREEN-SAVER extension
+ * to send us a "you are idle" event.
*
- * Then, we map a full screen black window.
+ * Then, we map a full screen black window (or, in the case of the
+ * MIT-SCREEN-SAVER extension, use the one it gave us.)
*
* We place a __SWM_VROOT property on this window, so that newly-started
* clients will think that this window is a "virtual root" window.
* and a few other things. The included "xscreensaver_command" program
* sends these messsages.
*
- * If we don't have the XIdle extension, then we do the XAutoLock trick:
- * notice every window that gets created, and wait 30 seconds or so until
- * its creating process has settled down, and then select KeyPress events on
- * those windows which already select for KeyPress events. It's important
- * that we not select KeyPress on windows which don't select them, because
- * that would interfere with event propagation. This will break if any
- * program changes its event mask to contain KeyRelease or PointerMotion
- * more than 30 seconds after creating the window, but that's probably
- * pretty rare.
+ * If we don't have the XIdle, MIT-SCREEN-SAVER, or SGI SCREEN_SAVER
+ * extensions, then we do the XAutoLock trick: notice every window that
+ * gets created, and wait 30 seconds or so until its creating process has
+ * settled down, and then select KeyPress events on those windows which
+ * already select for KeyPress events. It's important that we not select
+ * KeyPress on windows which don't select them, because that would
+ * interfere with event propagation. This will break if any program
+ * changes its event mask to contain KeyRelease or PointerMotion more than
+ * 30 seconds after creating the window, but that's probably pretty rare.
*
* The reason that we can't select KeyPresses on windows that don't have
* them already is that, when dispatching a KeyPress event, X finds the
* "client changing event mask" problem that the KeyPress events hack does.
* I think polling is more reliable.
*
- * None of this crap happens if we're using the XIdle extension, so install
- * it if the description above sounds just too flaky to live. It is, but
- * those are your choices.
+ * None of this crap happens if we're using one of the extensions, so install
+ * one of them if the description above sounds just too flaky to live. It
+ * is, but those are your choices.
*
- * A third idle-detection option could be implement (but is not): when running
- * on the console display ($DISPLAY is `localhost`:0) and we're on a machine
- * where /dev/tty and /dev/mouse have reasonable last-modification times, we
- * could just stat those. But the incremental benefit of implementing this
- * is really small, so forget I said anything.
+ * A third idle-detection option could be implemented (but is not): when
+ * running on the console display ($DISPLAY is `localhost`:0) and we're on a
+ * machine where /dev/tty and /dev/mouse have reasonable last-modification
+ * times, we could just stat() those. But the incremental benefit of
+ * implementing this is really small, so forget I said anything.
*
* Debugging hints:
* - Have a second terminal handy.
* - Be careful where you set your breakpoints, you don't want this to
* stop under the debugger with the keyboard grabbed or the blackout
* window exposed.
- * - you probably can't set breakpoints in functions that are called on
+ * - If you run your debugger under XEmacs, try M-ESC (x-grab-keyboard)
+ * to keep your emacs window alive even when xscreensaver has grabbed.
+ * - Go read the code related to `debug_p'.
+ * - You probably can't set breakpoints in functions that are called on
* the other side of a call to fork() -- if your clients are dying
* with signal 5, Trace/BPT Trap, you're losing in this way.
- * - If you aren't using XIdle, don't leave this stopped under the
- * debugger for very long, or the X input buffer will get huge because
- * of the keypress events it's selecting for. This can make your X
- * server wedge with "no more input buffers."
+ * - If you aren't using a server extension, don't leave this stopped
+ * under the debugger for very long, or the X input buffer will get
+ * huge because of the keypress events it's selecting for. This can
+ * make your X server wedge with "no more input buffers."
*
- * ========================================================================
- */
+ * ======================================================================== */
-#if __STDC__
-#include <stdlib.h>
-#include <unistd.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
#endif
#include <stdio.h>
+#include <ctype.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Intrinsic.h>
+#include <X11/StringDefs.h>
+#include <X11/Shell.h>
#include <X11/Xos.h>
-
-#ifdef HAVE_XIDLE
+#ifdef HAVE_XMU
+# ifndef VMS
+# include <X11/Xmu/Error.h>
+# else /* !VMS */
+# include <Xmu/Error.h>
+# endif /* !VMS */
+#else /* !HAVE_XMU */
+# include "xmu.h"
+#endif /* !HAVE_XMU */
+
+#ifdef HAVE_XIDLE_EXTENSION
#include <X11/extensions/xidle.h>
-#endif
+#endif /* HAVE_XIDLE_EXTENSION */
#include "xscreensaver.h"
+#include "version.h"
+#include "yarandom.h"
+#include "resources.h"
+#include "visual.h"
-#if defined(SVR4) || defined(SYSV)
-# define srandom(i) srand((unsigned int)(i))
-#else
-extern void srandom P((int)); /* srand() is in stdlib.h... */
-#endif
-
-extern char *get_string_resource P((char *, char *));
-extern Bool get_boolean_resource P((char *, char *));
-extern int get_integer_resource P((char *, char *));
-extern unsigned int get_minutes_resource P((char *, char *));
-extern unsigned int get_seconds_resource P((char *, char *));
-
-extern Visual *get_visual_resource P((Display *, char *, char *));
-extern int get_visual_depth P((Display *, Visual *));
-
-extern void notice_events_timer P((XtPointer closure, void *timer));
-extern void cycle_timer P((void *junk1, XtPointer junk2));
-extern void activate_lock_timer P((void *junk1, XtPointer junk2));
-extern void sleep_until_idle P((Bool until_idle_p));
-
-extern void ensure_no_screensaver_running P((void));
-extern void initialize_screensaver_window P((void));
-extern void disable_builtin_screensaver P((void));
-
-extern void hack_environment P((void));
-extern void grab_keyboard_and_mouse P((void));
-extern void ungrab_keyboard_and_mouse P((void));
-
-extern void save_argv P((int argc, char **argv));
-
-
-char *screensaver_version;
-char *progname;
-char *progclass;
-XrmDatabase db;
-
-XtAppContext app;
-
-Display *dpy;
-Screen *screen;
-Visual *visual;
-int visual_depth;
+saver_info *global_si_kludge = 0; /* I hate C so much... */
-Widget toplevel_shell;
+char *progname = 0;
+char *progclass = 0;
+XrmDatabase db = 0;
-Time lock_timeout;
-extern Time timeout;
-extern Time cycle;
-#ifndef NO_LOCKING
-extern Time passwd_timeout;
-#endif
-extern Time pointer_timeout;
-extern Time notice_events_timeout;
-extern XtIntervalId lock_id, cycle_id;
-
-Bool use_xidle;
-Bool verbose_p;
-Bool lock_p, locked_p;
-
-extern char **screenhacks;
-extern int screenhacks_count;
-extern char *shell;
-extern int nice_inferior;
-extern Window screensaver_window;
-extern Cursor cursor;
-extern Colormap cmap, cmap2;
-extern Bool fade_p, unfade_p;
-extern int fade_seconds, fade_ticks;
-extern Bool install_cmap_p;
-extern Bool locking_disabled_p;
-extern char *nolock_reason;
-extern Bool demo_mode_p;
-extern Bool dbox_up_p;
-extern int next_mode_p;
-
-static time_t initial_delay;
-
-extern Atom XA_VROOT, XA_XSETROOT_ID;
-extern Atom XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
-
-static Atom XA_SCREENSAVER;
+static Atom XA_SCREENSAVER_RESPONSE;
static Atom XA_ACTIVATE, XA_DEACTIVATE, XA_CYCLE, XA_NEXT, XA_PREV;
-static Atom XA_EXIT, XA_RESTART, XA_DEMO, XA_LOCK;
+static Atom XA_EXIT, XA_RESTART, XA_LOCK, XA_SELECT;
+Atom XA_DEMO, XA_PREFS;
-#ifdef NO_MOTIF /* kludge */
-Bool demo_mode_p = 0;
-Bool dbox_up_p = 0;
-#ifndef NO_LOCKING
-Time passwd_timeout = 0;
-#endif
-#endif
-
-\f
-#ifdef NO_DEMO_MODE
-# define demo_mode() abort()
-#else
-extern void demo_mode P((void));
-#endif
\f
static XrmOptionDescRec options [] = {
- { "-timeout", ".timeout", XrmoptionSepArg, 0 },
- { "-idelay", ".initialDelay",XrmoptionSepArg, 0 },
- { "-cycle", ".cycle", XrmoptionSepArg, 0 },
- { "-visual", ".visualID", XrmoptionSepArg, 0 },
- { "-lock-timeout", ".lockTimeout", XrmoptionSepArg, 0 },
- { "-verbose", ".verbose", XrmoptionNoArg, "on" },
- { "-silent", ".verbose", XrmoptionNoArg, "off" },
- { "-xidle", ".xidle", XrmoptionNoArg, "on" },
- { "-no-xidle", ".xidle", XrmoptionNoArg, "off" },
- { "-lock", ".lock", XrmoptionNoArg, "on" },
- { "-no-lock", ".lock", XrmoptionNoArg, "off" }
+ { "-timeout", ".timeout", XrmoptionSepArg, 0 },
+ { "-cycle", ".cycle", XrmoptionSepArg, 0 },
+ { "-lock-mode", ".lock", XrmoptionNoArg, "on" },
+ { "-no-lock-mode", ".lock", XrmoptionNoArg, "off" },
+ { "-lock-timeout", ".lockTimeout", XrmoptionSepArg, 0 },
+ { "-lock-vts", ".lockVTs", XrmoptionNoArg, "on" },
+ { "-no-lock-vts", ".lockVTs", XrmoptionNoArg, "off" },
+ { "-visual", ".visualID", XrmoptionSepArg, 0 },
+ { "-install", ".installColormap", XrmoptionNoArg, "on" },
+ { "-no-install", ".installColormap", XrmoptionNoArg, "off" },
+ { "-verbose", ".verbose", XrmoptionNoArg, "on" },
+ { "-silent", ".verbose", XrmoptionNoArg, "off" },
+ { "-timestamp", ".timestamp", XrmoptionNoArg, "on" },
+ { "-capture-stderr", ".captureStderr", XrmoptionNoArg, "on" },
+ { "-no-capture-stderr", ".captureStderr", XrmoptionNoArg, "off" },
+ { "-xidle-extension", ".xidleExtension", XrmoptionNoArg, "on" },
+ { "-no-xidle-extension", ".xidleExtension", XrmoptionNoArg, "off" },
+ { "-mit-extension", ".mitSaverExtension",XrmoptionNoArg, "on" },
+ { "-no-mit-extension", ".mitSaverExtension",XrmoptionNoArg, "off" },
+ { "-sgi-extension", ".sgiSaverExtension",XrmoptionNoArg, "on" },
+ { "-no-sgi-extension", ".sgiSaverExtension",XrmoptionNoArg, "off" },
+ { "-splash", ".splash", XrmoptionNoArg, "on" },
+ { "-no-splash", ".splash", XrmoptionNoArg, "off" },
+ { "-nosplash", ".splash", XrmoptionNoArg, "off" },
+ { "-idelay", ".initialDelay", XrmoptionSepArg, 0 },
+ { "-nice", ".nice", XrmoptionSepArg, 0 },
+
+ /* Actually these are built in to Xt, but just to be sure... */
+ { "-synchronous", ".synchronous", XrmoptionNoArg, "on" },
+ { "-xrm", NULL, XrmoptionResArg, NULL }
};
static char *defaults[] = {
-#include "XScreenSaver.ad.h"
+#include "XScreenSaver_ad.h"
0
};
+#ifdef _VROOT_H_
+ERROR! You must not include vroot.h in this file.
+#endif
+
static void
-do_help ()
+do_help (saver_info *si)
{
- printf ("\
-xscreensaver %s, copyright (c) 1991-1994 by Jamie Zawinski <jwz@lucid.com>.\n\
+ fflush (stdout);
+ fflush (stderr);
+ fprintf (stdout, "\
+xscreensaver %s, copyright (c) 1991-1998 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\
- -cycle <minutes> how long to let each hack run\n\
- -idelay <seconds> how long to sleep before startup\n\
- -demo enter interactive demo mode on startup\n\
- -verbose be loud\n\
- -silent don't\n\
- -xidle use the XIdle server extension\n\
- -no-xidle don't\n\
- -lock require a password before deactivating\n\
- -no-lock don't\n\
- -lock-timeout <minutes> grace period before locking; default 0\n\
- -help this message\n\
+ -timeout <minutes> When the screensaver should activate.\n\
+ -cycle <minutes> How long to let each hack run before switching.\n\
+ -lock-mode Require a password before deactivating.\n\
+ -lock-timeout <minutes> Grace period before locking; default 0.\n\
+ -visual <id-or-class> Which X visual to run on.\n\
+ -install Install a private colormap.\n\
+ -verbose Be loud.\n\
+ -no-splash Don't display a splash-screen at startup.\n\
+ -help This message.\n\
\n\
-Use the `xscreensaver-command' program to control a running screensaver.\n\
+See the manual for other options and X resources.\n\
\n\
-The *programs, *colorPrograms, and *monoPrograms resources control which\n\
-graphics demos will be launched by the screensaver. See the man page for\n\
-more details.\n\n",
- screensaver_version);
-
-#ifdef NO_LOCKING
- printf("Support for locking was not enabled at compile-time.\n");
-#endif
-#ifdef NO_DEMO_MODE
- printf("Support for demo mode was not enabled at compile-time.\n");
-#endif
-#ifndef HAVE_XIDLE
- printf("Support for the XIdle extension was not enabled at compile-time.\n");
-#endif
-
+The `xscreensaver' program should be left running in the background.\n\
+Use the `xscreensaver-command' program to 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\
+\n\
+Just getting started? Try this:\n\
+\n\
+ xscreensaver &\n\
+ xscreensaver-command -demo\n\
+\n\
+For updates, check http://www.jwz.org/xscreensaver/\n\
+\n",
+ si->version);
fflush (stdout);
+ fflush (stderr);
exit (1);
}
-static void
-get_screenhacks ()
+char *
+timestring (void)
{
- char *data[3];
- int i, hacks_size = 10;
+ time_t now = time ((time_t *) 0);
+ char *str = (char *) ctime (&now);
+ char *nl = (char *) strchr (str, '\n');
+ if (nl) *nl = 0; /* take off that dang newline */
+ return str;
+}
- data[0] = get_string_resource ("programs", "Programs");
- data[1] = ((CellsOfScreen (screen) <= 2)
- ? get_string_resource ("monoPrograms", "MonoPrograms")
- : get_string_resource ("colorPrograms", "ColorPrograms"));
- data[2] = 0;
- if (! data[0]) data[0] = data[1], data[1] = 0;
+static Bool blurb_timestamp_p = False; /* kludge */
- screenhacks = (char **) malloc (sizeof (char *) * hacks_size);
- screenhacks_count = 0;
+const char *
+blurb (void)
+{
+ if (!blurb_timestamp_p)
+ return progname;
+ else
+ {
+ static char buf[255];
+ char *ct = timestring();
+ int n = strlen(progname);
+ if (n > 100) n = 99;
+ strncpy(buf, progname, n);
+ buf[n++] = ':';
+ buf[n++] = ' ';
+ strncpy(buf+n, ct+11, 8);
+ strcpy(buf+n+9, ": ");
+ return buf;
+ }
+}
- for (i = 0; data[i]; i++)
+
+int
+saver_ehandler (Display *dpy, XErrorEvent *error)
+{
+ saver_info *si = global_si_kludge; /* I hate C so much... */
+
+ fprintf (real_stderr, "\n"
+ "#######################################"
+ "#######################################\n\n"
+ "%s: X Error! PLEASE REPORT THIS BUG.\n\n"
+ "#######################################"
+ "#######################################\n\n",
+ blurb());
+ if (XmuPrintDefaultErrorMessage (dpy, error, real_stderr))
{
- int j = 0;
- char *d = data [i];
- int size = strlen (d);
- while (j < size)
+ fprintf (real_stderr, "\n");
+ if (si->prefs.xsync_p)
{
- int end, start = j;
- if (d[j] == ' ' || d[j] == '\t' || d[j] == '\n' || d[j] == 0)
- {
- j++;
- continue;
- }
- if (hacks_size <= screenhacks_count)
- screenhacks = (char **) realloc (screenhacks,
- (hacks_size = hacks_size * 2) *
- sizeof (char *));
- screenhacks [screenhacks_count++] = d + j;
- while (d[j] != 0 && d[j] != '\n')
- j++;
- end = j;
- while (j > start && (d[j-1] == ' ' || d[j-1] == '\t'))
- j--;
- d[j] = 0;
- j = end + 1;
+ saver_exit (si, -1, "because of synchronous X Error");
+ }
+ 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());
+ saver_exit (si, -1, 0);
}
}
+ else
+ fprintf (real_stderr, " (nonfatal.)\n");
+ return 0;
+}
- /* 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).
- */
- for (i = 0; i < screenhacks_count; i++)
+\f
+/* The zillions of initializations.
+ */
+
+static void get_screenhacks (saver_info *si);
+
+
+
+/* Set progname, version, etc. This is done very early.
+ */
+static void
+set_version_string (saver_info *si, int *argc, char **argv)
+{
+ progclass = "XScreenSaver";
+
+ /* progname is reset later, after we connect to X. */
+ progname = strrchr(argv[0], '/');
+ if (progname) progname++;
+ else progname = argv[0];
+
+ if (strlen(progname) > 100) /* keep it short. */
+ progname[99] = 0;
+
+ /* The X resource database blows up if argv[0] has a "." in it. */
+ {
+ char *s = argv[0];
+ while ((s = strchr (s, '.')))
+ *s = '_';
+ }
+
+ si->version = (char *) malloc (5);
+ memcpy (si->version, screensaver_id + 17, 4);
+ si->version [4] = 0;
+}
+
+
+/* Initializations that potentially take place as a priveleged user:
+ If the xscreensaver executable is setuid root, then these initializations
+ are run as root, before discarding privileges.
+ */
+static void
+privileged_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 */
{
- char *s = screenhacks [i];
- char *s2;
- int L = strlen (s);
- int j, k;
- for (j = 0; j < L; j++)
+ si->locking_disabled_p = True;
+ si->nolock_reason = "error getting password";
+ }
+#endif /* NO_LOCKING */
+
+#ifndef NO_SETUID
+ hack_uid (si);
+#endif /* NO_SETUID */
+}
+
+
+/* Open the connection to the X server, and intern our Atoms.
+ */
+static Widget
+connect_to_server (saver_info *si, int *argc, char **argv)
+{
+ Widget toplevel_shell;
+
+ XSetErrorHandler (saver_ehandler);
+ toplevel_shell = XtAppInitialize (&si->app, progclass,
+ options, XtNumber (options),
+ argc, argv, defaults, 0, 0);
+
+ si->dpy = XtDisplay (toplevel_shell);
+ si->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 */
+
+ XA_VROOT = XInternAtom (si->dpy, "__SWM_VROOT", False);
+ XA_SCREENSAVER = XInternAtom (si->dpy, "SCREENSAVER", False);
+ XA_SCREENSAVER_VERSION = XInternAtom (si->dpy, "_SCREENSAVER_VERSION",False);
+ XA_SCREENSAVER_ID = XInternAtom (si->dpy, "_SCREENSAVER_ID", False);
+ XA_SCREENSAVER_TIME = XInternAtom (si->dpy, "_SCREENSAVER_TIME", False);
+ XA_SCREENSAVER_RESPONSE = XInternAtom (si->dpy, "_SCREENSAVER_RESPONSE",
+ False);
+ XA_XSETROOT_ID = XInternAtom (si->dpy, "_XSETROOT_ID", False);
+ XA_ACTIVATE = XInternAtom (si->dpy, "ACTIVATE", False);
+ XA_DEACTIVATE = XInternAtom (si->dpy, "DEACTIVATE", False);
+ XA_RESTART = XInternAtom (si->dpy, "RESTART", False);
+ XA_CYCLE = XInternAtom (si->dpy, "CYCLE", False);
+ XA_NEXT = XInternAtom (si->dpy, "NEXT", False);
+ XA_PREV = XInternAtom (si->dpy, "PREV", False);
+ XA_SELECT = XInternAtom (si->dpy, "SELECT", False);
+ XA_EXIT = XInternAtom (si->dpy, "EXIT", False);
+ XA_DEMO = XInternAtom (si->dpy, "DEMO", False);
+ XA_PREFS = XInternAtom (si->dpy, "PREFS", False);
+ XA_LOCK = XInternAtom (si->dpy, "LOCK", False);
+
+ return toplevel_shell;
+}
+
+
+/* Handle the command-line arguments that were not handled for us by Xt.
+ Issue an error message and exit if there are unknown options.
+ */
+static void
+process_command_line (saver_info *si, int *argc, char **argv)
+{
+ int i;
+ for (i = 1; i < *argc; i++)
+ {
+ if (!strcmp (argv[i], "-debug"))
+ /* 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"))
+ do_help (si);
+
+ else
{
- switch (s[j])
+ const char *s = argv[i];
+ fprintf (stderr, "%s: unknown option \"%s\". Try \"-help\".\n",
+ blurb(), s);
+
+ if (s[0] == '-' && s[1] == '-') s++;
+ if (!strcmp (s, "-activate") ||
+ !strcmp (s, "-deactivate") ||
+ !strcmp (s, "-cycle") ||
+ !strcmp (s, "-next") ||
+ !strcmp (s, "-prev") ||
+ !strcmp (s, "-exit") ||
+ !strcmp (s, "-restart") ||
+ !strcmp (s, "-demo") ||
+ !strcmp (s, "-prefs") ||
+ !strcmp (s, "-preferences") ||
+ !strcmp (s, "-lock") ||
+ !strcmp (s, "-version") ||
+ !strcmp (s, "-time"))
{
- case '\'': case '"': case '`': case '\\':
- goto DONE;
- case '\t':
- s[j] = ' ';
- case ' ':
- k = 0;
- for (s2 = s+j+1; *s2 == ' ' || *s2 == '\t'; s2++)
- k++;
- if (k > 0)
- for (s2 = s + j + 1; *s2; s2++)
- s2 [0] = s2 [k];
- break;
+ fprintf (stderr, "\n\
+ However, %s is an option to the `xscreensaver-command' program.\n\
+ 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);
+
+ /* Since version 1.21 renamed the "-lock" option to "-lock-mode",
+ suggest that explicitly. */
+ if (!strcmp (s, "-lock"))
+ fprintf (stderr, "\
+ Or perhaps you meant either the \"-lock-mode\" or the\n\
+ \"-lock-timeout <minutes>\" options to xscreensaver?\n\n");
}
+ exit (1);
}
- DONE:
- ;
}
+}
+
- if (screenhacks_count)
+/* Print out the xscreensaver banner to the tty if applicable;
+ Issue any other warnings that are called for at this point.
+ */
+static void
+print_banner (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+
+ /* This resource gets set some time before the others, so that we know
+ whether to print the banner (and so that the banner gets printed before
+ any resource-database-related error messages.)
+ */
+ p->verbose_p = (p->debug_p || get_boolean_resource ("verbose", "Boolean"));
+
+ /* Ditto, for the locking_disabled_p message. */
+ p->lock_p = get_boolean_resource ("lock", "Boolean");
+
+ 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 ());
+
+ if (p->debug_p)
+ fprintf (stderr, "\n"
+ "%s: Warning: running in DEBUG MODE. Be afraid.\n"
+ "\n"
+ "\tNote that in debug mode, the xscreensaver window will only\n"
+ "\tcover the left half of the screen. (The idea is that you\n"
+ "\tcan still see debugging output in a shell, if you position\n"
+ "\tit on the right side of the screen.)\n"
+ "\n"
+ "\tDebug mode is NOT SECURE. Do not run with -debug in\n"
+ "\tuntrusted environments.\n"
+ "\n",
+ blurb());
+
+ if (p->verbose_p)
{
- /* Shrink down the screenhacks array to be only as big as it needs to.
- This doesn't really matter at all. */
- screenhacks = (char **)
- realloc (screenhacks, ((screenhacks_count + 1) * sizeof(char *)));
- screenhacks [screenhacks_count] = 0;
+ if (!si->uid_message || !*si->uid_message)
+ describe_uids (si, stderr);
+ else
+ {
+ if (si->orig_uid && *si->orig_uid)
+ fprintf (stderr, "%s: initial effective uid/gid was %s.\n",
+ blurb(), si->orig_uid);
+ fprintf (stderr, "%s: %s\n", blurb(), si->uid_message);
+ }
}
- else
+
+ /* If locking was not able to be initalized for some reason, explain why.
+ (This has to be done after we've read the lock_p resource.)
+ */
+ if (p->lock_p && si->locking_disabled_p)
{
- free (screenhacks);
- screenhacks = 0;
+ p->lock_p = False;
+ fprintf (stderr, "%s: locking is disabled (%s).\n", blurb(),
+ si->nolock_reason);
+ if (strstr (si->nolock_reason, "passw"))
+ fprintf (stderr, "%s: does xscreensaver need to be setuid? "
+ "consult the manual.\n", blurb());
+ else if (strstr (si->nolock_reason, "running as "))
+ fprintf (stderr,
+ "%s: locking only works when xscreensaver is launched\n"
+ "\t by a normal, non-privileged user (e.g., not \"root\".)\n"
+ "\t See the manual for details.\n",
+ blurb());
}
}
+/* Examine all of the display's screens, and populate the `saver_screen_info'
+ structures.
+ */
static void
-get_resources ()
+initialize_per_screen_info (saver_info *si, Widget toplevel_shell)
{
- /* Note: we can't use the resource ".visual" because Xt is SO FUCKED. */
- visual = get_visual_resource (dpy, "visualID", "VisualID");
- timeout = 1000 * get_minutes_resource ("timeout", "Time");
- cycle = 1000 * get_minutes_resource ("cycle", "Time");
- lock_timeout = 1000 * get_minutes_resource ("lockTimeout", "Time");
- nice_inferior = get_integer_resource ("nice", "Nice");
- verbose_p = get_boolean_resource ("verbose", "Boolean");
- lock_p = get_boolean_resource ("lock", "Boolean");
- install_cmap_p = get_boolean_resource ("installColormap", "Boolean");
- fade_p = get_boolean_resource ("fade", "Boolean");
- unfade_p = get_boolean_resource ("unfade", "Boolean");
- fade_seconds = get_seconds_resource ("fadeSeconds", "Time");
- fade_ticks = get_integer_resource ("fadeTicks", "Integer");
- shell = get_string_resource ("bourneShell", "BourneShell");
- initial_delay = get_seconds_resource ("initialDelay", "Time");
- pointer_timeout = 1000 * get_seconds_resource ("pointerPollTime", "Time");
- notice_events_timeout = 1000 * get_seconds_resource ("windowCreationTimeout",
- "Time");
-#ifndef NO_LOCKING
- passwd_timeout = 1000 * get_seconds_resource ("passwdTimeout", "Time");
- if (passwd_timeout == 0) passwd_timeout = 30000;
-#endif
- if (timeout < 10000) timeout = 10000;
- if (cycle < 2000) cycle = 2000;
- if (pointer_timeout == 0) pointer_timeout = 5000;
- if (notice_events_timeout == 0) notice_events_timeout = 10000;
- if (fade_seconds == 0 || fade_ticks == 0) fade_p = False;
- if (! fade_p) unfade_p = False;
+ Bool found_any_writable_cells = False;
+ int i;
- visual_depth = get_visual_depth (dpy, visual);
+ si->nscreens = ScreenCount(si->dpy);
+ si->screens = (saver_screen_info *)
+ calloc(sizeof(saver_screen_info), si->nscreens);
- if (visual_depth <= 1 || CellsOfScreen (screen) <= 2)
- install_cmap_p = False;
+ si->default_screen = &si->screens[DefaultScreen(si->dpy)];
-#ifdef NO_LOCKING
- locking_disabled_p = True;
- nolock_reason = "not compiled with locking support";
- if (lock_p)
+ for (i = 0; i < si->nscreens; i++)
{
- lock_p = False;
- fprintf (stderr, "%s: %snot compiled with support for locking.\n",
- progname, (verbose_p ? "## " : ""));
- }
-#else /* ! NO_LOCKING */
- if (lock_p && locking_disabled_p)
- {
- fprintf (stderr, "%s: %slocking is disabled (%s).\n", progname,
- (verbose_p ? "## " : ""), nolock_reason);
- lock_p = False;
- }
-#endif /* ! NO_LOCKING */
+ saver_screen_info *ssi = &si->screens[i];
+ ssi->global = si;
+ ssi->screen = ScreenOfDisplay (si->dpy, i);
- /* don't set use_xidle unless it is explicitly specified */
- if (get_string_resource ("xidle", "Boolean"))
- use_xidle = get_boolean_resource ("xidle", "Boolean");
- else
-#ifdef HAVE_XIDLE /* pick a default */
- use_xidle = True;
-#else
- use_xidle = False;
-#endif
- get_screenhacks ();
-}
+ /* Note: we can't use the resource ".visual" because Xt is SO FUCKED. */
+ ssi->default_visual =
+ get_visual_resource (ssi->screen, "visualID", "VisualID", False);
-char *
-timestring ()
-{
- long now = time ((time_t *) 0);
- char *str = (char *) ctime (&now);
- char *nl = (char *) strchr (str, '\n');
- if (nl) *nl = 0; /* take off that dang newline */
- return str;
-}
+ ssi->current_visual = ssi->default_visual;
+ ssi->current_depth = visual_depth (ssi->screen, ssi->current_visual);
-#ifdef NO_SETUID
-# define hack_uid()
-# define hack_uid_warn()
-#else /* !NO_SETUID */
-extern void hack_uid P((void));
-extern void hack_uid_warn P((void));
-#endif /* NO_SETUID */
+ if (ssi == si->default_screen)
+ /* Since this is the default screen, use the one already created. */
+ ssi->toplevel_shell = toplevel_shell;
+ else
+ /* Otherwise, each screen must have its own unmapped root widget. */
+ ssi->toplevel_shell =
+ XtVaAppCreateShell (progname, progclass, applicationShellWidgetClass,
+ si->dpy,
+ XtNscreen, ssi->screen,
+ XtNvisual, ssi->current_visual,
+ XtNdepth, visual_depth (ssi->screen,
+ ssi->current_visual),
+ 0);
+
+ if (! found_any_writable_cells)
+ {
+ /* Check to see whether fading is ever possible -- if any of the
+ screens on the display has a PseudoColor visual, then fading can
+ work (on at least some screens.) If no screen has a PseudoColor
+ visual, then don't bother ever trying to fade, because it will
+ just cause a delay without causing any visible effect.
+ */
+ if (has_writable_cells (ssi->screen, ssi->current_visual) ||
+ get_visual (ssi->screen, "PseudoColor", True, False) ||
+ get_visual (ssi->screen, "GrayScale", True, False))
+ found_any_writable_cells = True;
+ }
+ }
+ si->fading_possible_p = found_any_writable_cells;
+}
-#ifndef NO_LOCKING
-extern Bool unlock_p P((Widget));
-extern Bool lock_init P((void));
-#endif
-static void initialize ();
-static void main_loop ();
-static void initialize ();
+/* 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.
+ */
void
-main (argc, argv)
- int argc;
- char **argv;
+get_resources (saver_info *si)
{
- initialize (argc, argv);
- main_loop ();
-}
+ 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");
-static void
-initialize_connection (argc, argv)
- int argc;
- char **argv;
-{
- toplevel_shell = XtAppInitialize (&app, progclass,
- options, XtNumber (options),
- &argc, argv, defaults, 0, 0);
+ if ((s = get_string_resource ("splash", "Boolean")))
+ if (!get_boolean_resource("splash", "Boolean"))
+ p->splash_duration = 0;
+ if (s) free (s);
- dpy = XtDisplay (toplevel_shell);
- screen = XtScreen (toplevel_shell);
- db = XtDatabase (dpy);
- XtGetApplicationNameAndClass (dpy, &progname, &progclass);
+ 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());
+ }
- if (argc == 2 && !strcmp (argv[1], "-help"))
- do_help ();
- else if (argc > 1)
+ /* 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);
+
+
+ /* 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);
+
+ if (p->debug_p)
{
- fprintf (stderr, "%s: unknown option %s\n", progname, argv [1]);
- exit (1);
+ XSynchronize(si->dpy, True);
+ p->xsync_p = True;
+ p->verbose_p = True;
+ p->timestamp_p = True;
+ p->initial_delay = 0;
}
- get_resources ();
- hack_uid_warn ();
- hack_environment ();
- XA_VROOT = XInternAtom (dpy, "__SWM_VROOT", False);
- XA_SCREENSAVER = XInternAtom (dpy, "SCREENSAVER", False);
- XA_SCREENSAVER_VERSION = XInternAtom (dpy, "_SCREENSAVER_VERSION", False);
- XA_SCREENSAVER_ID = XInternAtom (dpy, "_SCREENSAVER_ID", False);
- XA_XSETROOT_ID = XInternAtom (dpy, "_XSETROOT_ID", False);
- XA_ACTIVATE = XInternAtom (dpy, "ACTIVATE", False);
- XA_DEACTIVATE = XInternAtom (dpy, "DEACTIVATE", False);
- XA_RESTART = XInternAtom (dpy, "RESTART", False);
- XA_CYCLE = XInternAtom (dpy, "CYCLE", False);
- XA_NEXT = XInternAtom (dpy, "NEXT", False);
- XA_PREV = XInternAtom (dpy, "PREV", False);
- XA_EXIT = XInternAtom (dpy, "EXIT", False);
- XA_DEMO = XInternAtom (dpy, "DEMO", False);
- XA_LOCK = XInternAtom (dpy, "LOCK", False);
+
+ blurb_timestamp_p = p->timestamp_p;
}
-extern void init_sigchld P((void));
+/* If any server extensions have been requested, try and initialize them.
+ Issue warnings if requests can't be honored.
+ */
static void
-initialize (argc, argv)
- int argc;
- char **argv;
+initialize_server_extensions (saver_info *si)
{
- Bool initial_demo_mode_p = False;
- screensaver_version = (char *) malloc (5);
- memcpy (screensaver_version, screensaver_id + 17, 4);
- screensaver_version [4] = 0;
- progname = argv[0]; /* reset later; this is for the benefit of lock_init() */
+ saver_preferences *p = &si->prefs;
-#ifdef NO_LOCKING
- locking_disabled_p = True;
- nolock_reason = "not compiled with locking support";
-#else
- locking_disabled_p = False;
- if (! lock_init ()) /* before hack_uid() for proper permissions */
+ if (p->use_sgi_saver_extension)
{
- locking_disabled_p = True;
- nolock_reason = "error getting password";
+#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 */
}
-#endif
-
- hack_uid ();
- progclass = "XScreenSaver";
- /* remove -demo switch before saving argv */
- {
- int i;
- for (i = 1; i < argc; i++)
- while (!strcmp ("-demo", argv [i]))
+ if (p->use_mit_saver_extension)
+ {
+#ifdef HAVE_MIT_SAVER_EXTENSION
+ if (! query_mit_saver_extension (si))
{
- int j;
- initial_demo_mode_p = True;
- for (j = i; j < argc; j++)
- argv [j] = argv [j+1];
- argv [j] = 0;
- argc--;
- if (argc <= i) break;
+ fprintf (stderr,
+ "%s: display %s does not support the MIT-SCREEN-SAVER"
+ " extension.\n",
+ blurb(), DisplayString (si->dpy));
+ p->use_mit_saver_extension = False;
}
- }
- save_argv (argc, argv);
- initialize_connection (argc, argv);
- ensure_no_screensaver_running ();
-
- if (verbose_p)
- printf ("\
-%s %s, copyright (c) 1991-1994 by Jamie Zawinski <jwz@lucid.com>.\n\
- pid = %d.\n", progname, screensaver_version, getpid ());
- ensure_no_screensaver_running ();
-
- demo_mode_p = initial_demo_mode_p;
- screensaver_window = 0;
- cursor = 0;
- initialize_screensaver_window ();
- srandom ((int) time ((time_t *) 0));
- cycle_id = 0;
- lock_id = 0;
- locked_p = 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 (use_xidle)
+ if (p->use_xidle_extension)
{
-#ifdef HAVE_XIDLE
+#ifdef HAVE_XIDLE_EXTENSION
int first_event, first_error;
- if (! XidleQueryExtension (dpy, &first_event, &first_error))
+ if (! XidleQueryExtension (si->dpy, &first_event, &first_error))
{
fprintf (stderr,
"%s: display %s does not support the XIdle extension.\n",
- progname, DisplayString (dpy));
- use_xidle = 0;
+ blurb(), DisplayString (si->dpy));
+ p->use_xidle_extension = False;
}
-#else
- fprintf (stderr, "%s: not compiled with support for XIdle.\n",
- progname);
- use_xidle = 0;
-#endif
+#else /* !HAVE_XIDLE_EXTENSION */
+ fprintf (stderr, "%s: not compiled with support for XIdle.\n", blurb());
+ p->use_xidle_extension = False;
+#endif /* !HAVE_XIDLE_EXTENSION */
}
- init_sigchld ();
+ 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());
+}
- disable_builtin_screensaver ();
- if (initial_demo_mode_p)
- /* If the user wants demo mode, don't wait around before doing it. */
- initial_delay = 0;
+/* For the case where we aren't using an server extensions, select user events
+ on all the existing windows, and launch timers to select events on
+ newly-created windows as well.
-#ifdef HAVE_XIDLE
- if (! use_xidle)
-#endif
+ If a server extension is being used, this does nothing.
+ */
+static void
+select_events (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ int i;
+
+ if (p->use_xidle_extension ||
+ p->use_mit_saver_extension ||
+ p->use_sgi_saver_extension)
+ return;
+
+ if (p->initial_delay && !si->demo_mode_p)
{
- if (initial_delay)
+ if (p->verbose_p)
{
- if (verbose_p)
- {
- printf ("%s: waiting for %d second%s...", progname,
- initial_delay, (initial_delay == 1 ? "" : "s"));
- fflush (stdout);
- }
- sleep (initial_delay);
- if (verbose_p)
- printf (" done.\n");
- }
- if (verbose_p)
- {
- printf ("%s: selecting events on extant windows...", progname);
+ fprintf (stderr, "%s: waiting for %d second%s...", blurb(),
+ (int) p->initial_delay/1000,
+ (p->initial_delay == 1000 ? "" : "s"));
+ fflush (stderr);
fflush (stdout);
}
- notice_events_timer ((XtPointer)
- RootWindowOfScreen (XtScreen (toplevel_shell)),
- 0);
- if (verbose_p)
- printf (" done.\n");
+ usleep (p->initial_delay);
+ if (p->verbose_p)
+ fprintf (stderr, " done.\n");
+ }
+
+ if (p->verbose_p)
+ {
+ fprintf (stderr, "%s: selecting events on extant windows...", blurb());
+ fflush (stderr);
+ fflush (stdout);
}
+
+ /* Select events on the root windows of every screen. This also selects
+ 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));
+
+ if (p->verbose_p)
+ fprintf (stderr, " done.\n");
}
-extern void suspend_screenhack P((Bool suspend_p));
+/* Loop forever:
+ - wait until the user is idle;
+ - blank the screen;
+ - wait until the user is active;
+ - unblank the screen;
+ - repeat.
+
+ */
static void
-main_loop ()
+main_loop (saver_info *si)
{
+ saver_preferences *p = &si->prefs;
while (1)
{
- if (! demo_mode_p)
- sleep_until_idle (True);
+ if (! si->demo_mode_p)
+ sleep_until_idle (si, True);
- if (demo_mode_p)
- demo_mode ();
+ maybe_reload_init_file (si);
+
+#ifndef NO_DEMO_MODE
+ if (si->demo_mode_p)
+ demo_mode (si);
else
+#endif /* !NO_DEMO_MODE */
{
- if (verbose_p)
- printf ("%s: user is idle; waking up at %s.\n", progname,
- timestring());
- blank_screen ();
- spawn_screenhack (True);
- if (cycle)
- cycle_id = XtAppAddTimeOut (app, cycle, cycle_timer, 0);
+ 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);
#ifndef NO_LOCKING
- if (lock_p && lock_timeout == 0)
- locked_p = True;
- if (lock_p && !locked_p)
+ 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 */
- lock_id = XtAppAddTimeOut (app,lock_timeout,activate_lock_timer,0);
-#endif
+ si->lock_id = XtAppAddTimeOut (si->app, p->lock_timeout,
+ activate_lock_timer,
+ (XtPointer) si);
+#endif /* !NO_LOCKING */
PASSWD_INVALID:
- sleep_until_idle (False); /* until not idle */
+ sleep_until_idle (si, False); /* until not idle */
+ maybe_reload_init_file (si);
#ifndef NO_LOCKING
- if (locked_p)
+ if (si->locked_p)
{
Bool val;
- if (locking_disabled_p) abort ();
- dbox_up_p = True;
- ungrab_keyboard_and_mouse ();
- suspend_screenhack (True);
- XUndefineCursor (dpy, screensaver_window);
- if (verbose_p)
- printf ("%s: prompting for password.\n", progname);
- val = unlock_p (toplevel_shell);
- if (verbose_p && val == False)
- printf ("%s: password incorrect!\n", progname);
- dbox_up_p = False;
- XDefineCursor (dpy, screensaver_window, cursor);
- suspend_screenhack (False);
- grab_keyboard_and_mouse ();
+ 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;
- locked_p = False;
+ si->locked_p = False;
}
-#endif
- unblank_screen ();
- kill_screenhack ();
- if (cycle_id)
+#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;
+
+ if (si->cycle_id)
{
- XtRemoveTimeOut (cycle_id);
- cycle_id = 0;
+ XtRemoveTimeOut (si->cycle_id);
+ si->cycle_id = 0;
}
+
#ifndef NO_LOCKING
- if (lock_id)
+ if (si->lock_id)
{
- XtRemoveTimeOut (lock_id);
- lock_id = 0;
+ XtRemoveTimeOut (si->lock_id);
+ si->lock_id = 0;
}
-#endif
- if (verbose_p)
- printf ("%s: user is active; going to sleep at %s.\n", progname,
- timestring ());
+#endif /* !NO_LOCKING */
+
+ if (p->verbose_p)
+ fprintf (stderr, "%s: going to sleep.\n", blurb());
+ }
+ }
+}
+
+
+int
+main (int argc, char **argv)
+{
+ Widget shell;
+ saver_info the_si;
+ saver_info *si = &the_si;
+ int i;
+
+ memset(si, 0, sizeof(*si));
+ global_si_kludge = si; /* I hate C so much... */
+
+ srandom ((int) time ((time_t *) 0));
+
+ set_version_string (si, &argc, argv);
+ save_argv (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);
+
+ for (i = 0; i < si->nscreens; i++)
+ if (ensure_no_screensaver_running (si->dpy, si->screens[i].screen))
+ exit (1);
+
+ initialize_server_extensions (si);
+ initialize_screensaver_window (si);
+ select_events (si);
+ init_sigchld ();
+ disable_builtin_screensaver (si, True);
+ initialize_stderr (si);
+
+ if (!si->demo_mode_p)
+ 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.
+ */
+
+static void
+clientmessage_response (saver_info *si, Window w, Bool error,
+ const char *stderr_msg,
+ const char *protocol_msg)
+{
+ char *proto;
+ int L;
+ saver_preferences *p = &si->prefs;
+ if (error || p->verbose_p)
+ fprintf (stderr, "%s: %s\n", blurb(), stderr_msg);
+
+ L = strlen(protocol_msg);
+ proto = (char *) malloc (L + 2);
+ proto[0] = (error ? '-' : '+');
+ strcpy (proto+1, protocol_msg);
+ L++;
+
+ XChangeProperty (si->dpy, w, XA_SCREENSAVER_RESPONSE, XA_STRING, 8,
+ PropModeReplace, proto, L);
+ XSync (si->dpy, False);
+ free (proto);
+}
Bool
-handle_clientmessage (event, until_idle_p)
- XEvent *event;
- Bool until_idle_p;
+handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p)
{
- Atom type;
+ saver_preferences *p = &si->prefs;
+ Atom type = 0;
+ Window window = event->xclient.window;
+
+ /* Preferences might affect our handling of client messages. */
+ maybe_reload_init_file (si);
+
if (event->xclient.message_type != XA_SCREENSAVER)
{
char *str;
- str = XGetAtomName (dpy, event->xclient.message_type);
- fprintf (stderr, "%s: %sunrecognised ClientMessage type %s received\n",
- progname, (verbose_p ? "## " : ""),
- (str ? str : "(null)"));
+ str = XGetAtomName (si->dpy, event->xclient.message_type);
+ fprintf (stderr, "%s: unrecognised ClientMessage type %s received\n",
+ blurb(), (str ? str : "(null)"));
if (str) XFree (str);
+ return False;
}
if (event->xclient.format != 32)
{
- fprintf (stderr, "%s: %sClientMessage of format %d received, not 32\n",
- progname, (verbose_p ? "## " : ""), event->xclient.format);
+ fprintf (stderr, "%s: ClientMessage of format %d received, not 32\n",
+ blurb(), event->xclient.format);
+ return False;
}
+
type = event->xclient.data.l[0];
if (type == XA_ACTIVATE)
{
if (until_idle_p)
{
- if (verbose_p)
- printf ("%s: ACTIVATE ClientMessage received.\n", progname);
- return True;
+ clientmessage_response(si, window, False,
+ "ACTIVATE ClientMessage received.",
+ "activating.");
+ si->selection_mode = 0;
+ if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ {
+ XForceScreenSaver (si->dpy, ScreenSaverActive);
+ return False;
+ }
+ else
+ {
+ return True;
+ }
}
- fprintf (stderr,
- "%s: %sClientMessage ACTIVATE received while already active.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response(si, window, True,
+ "ClientMessage ACTIVATE received while already active.",
+ "already active.");
}
else if (type == XA_DEACTIVATE)
{
if (! until_idle_p)
{
- if (verbose_p)
- printf ("%s: DEACTIVATE ClientMessage received.\n", progname);
- return True;
+ clientmessage_response(si, window, False,
+ "DEACTIVATE ClientMessage received.",
+ "deactivating.");
+ if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ {
+ XForceScreenSaver (si->dpy, ScreenSaverReset);
+ return False;
+ }
+ else
+ {
+ return True;
+ }
}
- fprintf (stderr,
- "%s: %sClientMessage DEACTIVATE received while inactive.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response(si, window, True,
+ "ClientMessage DEACTIVATE received while inactive.",
+ "not active.");
}
else if (type == XA_CYCLE)
{
if (! until_idle_p)
{
- if (verbose_p)
- printf ("%s: CYCLE ClientMessage received.\n", progname);
- if (cycle_id)
- XtRemoveTimeOut (cycle_id);
- cycle_id = 0;
- cycle_timer (0, 0);
+ clientmessage_response(si, window, False,
+ "CYCLE ClientMessage received.",
+ "cycling.");
+ si->selection_mode = 0; /* 0 means randomize when its time. */
+ if (si->cycle_id)
+ XtRemoveTimeOut (si->cycle_id);
+ si->cycle_id = 0;
+ cycle_timer ((XtPointer) si, 0);
return False;
}
- fprintf (stderr,
- "%s: %sClientMessage CYCLE received while inactive.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response(si, window, True,
+ "ClientMessage CYCLE received while inactive.",
+ "not active.");
}
else if (type == XA_NEXT || type == XA_PREV)
{
- if (verbose_p)
- printf ("%s: %s ClientMessage received.\n", progname,
- (type == XA_NEXT ? "NEXT" : "PREV"));
- next_mode_p = 1 + (type == XA_PREV);
+ clientmessage_response(si, window, False,
+ (type == XA_NEXT
+ ? "NEXT ClientMessage received."
+ : "PREV ClientMessage received."),
+ "cycling.");
+ si->selection_mode = (type == XA_NEXT ? -1 : -2);
if (! until_idle_p)
{
- if (cycle_id)
- XtRemoveTimeOut (cycle_id);
- cycle_id = 0;
- cycle_timer (0, 0);
+ if (si->cycle_id)
+ XtRemoveTimeOut (si->cycle_id);
+ si->cycle_id = 0;
+ cycle_timer ((XtPointer) si, 0);
+ }
+ else
+ return True;
+ }
+ else if (type == XA_SELECT)
+ {
+ char buf [255];
+ char buf2 [255];
+ long which = event->xclient.data.l[1];
+
+ sprintf (buf, "SELECT %ld ClientMessage received.", which);
+ sprintf (buf2, "activating (%ld).", which);
+ clientmessage_response (si, window, False, buf, buf2);
+
+ if (which < 0) which = 0; /* 0 == "random" */
+ si->selection_mode = which;
+
+ if (! until_idle_p)
+ {
+ if (si->cycle_id)
+ XtRemoveTimeOut (si->cycle_id);
+ si->cycle_id = 0;
+ cycle_timer ((XtPointer) si, 0);
}
else
return True;
else if (type == XA_EXIT)
{
/* Ignore EXIT message if the screen is locked. */
- if (until_idle_p || !locked_p)
+ if (until_idle_p || !si->locked_p)
{
- if (verbose_p)
- printf ("%s: EXIT ClientMessage received.\n", progname);
+ clientmessage_response (si, window, False,
+ "EXIT ClientMessage received.",
+ "exiting.");
if (! until_idle_p)
{
- unblank_screen ();
- kill_screenhack ();
- XSync (dpy, False);
+ unblank_screen (si);
+ kill_screenhack (si);
+ XSync (si->dpy, False);
}
- exit (0);
+ saver_exit (si, 0, 0);
}
else
- fprintf (stderr, "%s: %sEXIT ClientMessage received while locked.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response (si, window, True,
+ "EXIT ClientMessage received while locked.",
+ "screen is locked.");
}
else if (type == XA_RESTART)
{
/* The RESTART message works whether the screensaver is active or not,
unless the screen is locked, in which case it doesn't work.
*/
- if (until_idle_p || !locked_p)
+ if (until_idle_p || !si->locked_p)
{
- if (verbose_p)
- printf ("%s: RESTART ClientMessage received.\n", progname);
+ clientmessage_response (si, window, False,
+ "RESTART ClientMessage received.",
+ "restarting.");
if (! until_idle_p)
{
- unblank_screen ();
- kill_screenhack ();
- XSync (dpy, False);
+ unblank_screen (si);
+ kill_screenhack (si);
+ XSync (si->dpy, False);
}
- restart_process ();
+
+ /* make sure error message shows up before exit. */
+ if (real_stderr && stderr != real_stderr)
+ dup2 (fileno(real_stderr), fileno(stderr));
+
+ restart_process (si);
+ exit (1); /* shouldn't get here; but if restarting didn't work,
+ make this command be the same as EXIT. */
}
else
- fprintf(stderr, "%s: %sRESTART ClientMessage received while locked.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response (si, window, True,
+ "RESTART ClientMessage received while locked.",
+ "screen is locked.");
}
else if (type == XA_DEMO)
{
#ifdef NO_DEMO_MODE
- fprintf (stderr,
- "%s: %snot compiled with support for DEMO mode\n",
- progname, (verbose_p ? "## " : ""));
-#else
+ clientmessage_response (si, window, True,
+ "not compiled with support for DEMO mode.",
+ "demo mode not enabled.");
+#else /* !NO_DEMO_MODE */
if (until_idle_p)
{
- if (verbose_p)
- printf ("%s: DEMO ClientMessage received.\n", progname);
- demo_mode_p = True;
+ clientmessage_response (si, window, False,
+ "DEMO ClientMessage received.",
+ "Demo mode.");
+ si->demo_mode_p = True;
return True;
}
- fprintf (stderr,
- "%s: %sDEMO ClientMessage received while active.\n",
- progname, (verbose_p ? "## " : ""));
-#endif
+ 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 */
}
else if (type == XA_LOCK)
{
#ifdef NO_LOCKING
- fprintf (stderr, "%s: %snot compiled with support for LOCK mode\n",
- progname, (verbose_p ? "## " : ""));
-#else
- if (locking_disabled_p)
- fprintf (stderr,
- "%s: %sLOCK ClientMessage received, but locking is disabled.\n",
- progname, (verbose_p ? "## " : ""));
- else if (locked_p)
- fprintf (stderr,
- "%s: %sLOCK ClientMessage received while already locked.\n",
- progname, (verbose_p ? "## " : ""));
+ clientmessage_response (si, window, True,
+ "not compiled with support for locking.",
+ "locking not enabled.");
+#else /* !NO_LOCKING */
+ if (si->locking_disabled_p)
+ clientmessage_response (si, window, True,
+ "LOCK ClientMessage received, but locking is disabled.",
+ "locking not enabled.");
+ else if (si->locked_p)
+ clientmessage_response (si, window, True,
+ "LOCK ClientMessage received while already locked.",
+ "already locked.");
else
{
- locked_p = True;
- if (verbose_p)
- printf ("%s: LOCK ClientMessage received;%s locking.\n",
- progname, until_idle_p ? " activating and" : "");
-
- if (lock_id) /* we're doing it now, so lose the timeout */
+ char buf [255];
+ char *response = (until_idle_p
+ ? "activating and locking."
+ : "locking.");
+ si->locked_p = True;
+ si->selection_mode = 0;
+ sprintf (buf, "LOCK ClientMessage received; %s", response);
+ clientmessage_response (si, window, False, buf, response);
+
+ if (si->lock_id) /* we're doing it now, so lose the timeout */
{
- XtRemoveTimeOut (lock_id);
- lock_id = 0;
+ XtRemoveTimeOut (si->lock_id);
+ si->lock_id = 0;
}
if (until_idle_p)
- return True;
+ {
+ if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
+ {
+ XForceScreenSaver (si->dpy, ScreenSaverActive);
+ return False;
+ }
+ else
+ {
+ return True;
+ }
+ }
}
-#endif
+#endif /* !NO_LOCKING */
}
else
{
+ char buf [1024];
char *str;
- str = XGetAtomName (dpy, type);
+ str = (type ? XGetAtomName(si->dpy, type) : 0);
+
if (str)
- fprintf (stderr,
- "%s: %sunrecognised screensaver ClientMessage %s received\n",
- progname, (verbose_p ? "## " : ""), str);
+ {
+ if (strlen (str) > 80)
+ strcpy (str+70, "...");
+ sprintf (buf, "unrecognised screensaver ClientMessage %s received.",
+ str);
+ free (str);
+ }
else
- fprintf (stderr,
- "%s: %sunrecognised screensaver ClientMessage 0x%x received\n",
- progname, (verbose_p ? "## " : ""),
- event->xclient.data.l[0]);
- if (str) XFree (str);
+ {
+ sprintf (buf,
+ "unrecognised screensaver ClientMessage 0x%x received.",
+ (unsigned int) event->xclient.data.l[0]);
+ }
+
+ clientmessage_response (si, window, True, buf, buf);
}
return False;
}