-/* xscreensaver, Copyright (c) 1991-2002 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1991-2008 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
* 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 (or, in the case of the
- * MIT-SCREEN-SAVER extension, use the one it gave us.)
+ * Then, we map a full screen black window.
*
* We place a __SWM_VROOT property on this window, so that newly-started
- * clients will think that this window is a "virtual root" window.
+ * clients will think that this window is a "virtual root" window (as per
+ * the logic in the historical "vroot.h" header.)
*
* If there is an existing "virtual root" window (one that already had
* an __SWM_VROOT property) then we remove that property from that window.
* When they are, we kill the inferior process, unmap the window, and restore
* the __SWM_VROOT property to the real virtual root window if there was one.
*
- * While we are waiting, we also set up timers so that, after a certain
- * amount of time has passed, we can start a different screenhack. We do
- * this by killing the running child process with SIGTERM, and then starting
- * a new one in the same way.
+ * On multi-screen systems, we do the above on each screen, and start
+ * multiple programs, each with a different value of $DISPLAY.
+ *
+ * On Xinerama systems, we do a similar thing, but instead create multiple
+ * windows on the (only) display, and tell the subprocess which one to use
+ * via the $XSCREENSAVER_WINDOW environment variable -- this trick requires
+ * a recent (Aug 2003) revision of vroot.h.
+ *
+ * While we are waiting for user activity, we also set up timers so that,
+ * after a certain amount of time has passed, we can start a different
+ * screenhack. We do this by killing the running child process with
+ * SIGTERM, and then starting a new one in the same way.
*
* If there was a real virtual root, meaning that we removed the __SWM_VROOT
* property from it, meaning we must (absolutely must) restore it before we
* can really fuck up the world by killing this process with "kill -9".
*
* This program accepts ClientMessages of type SCREENSAVER; these messages
- * may contain the atom ACTIVATE or DEACTIVATE, meaning to turn the
+ * may contain the atoms ACTIVATE, DEACTIVATE, etc, meaning to turn the
* screensaver on or off now, regardless of the idleness of the user,
* and a few other things. The included "xscreensaver-command" program
* sends these messsages.
* "client changing event mask" problem that the KeyPress events hack does.
* I think polling is more reliable.
*
- * None of this crap happens if we're using one of the extensions, so install
- * one of them if the description above sounds just too flaky to live. It
- * is, but those are your choices.
+ * On systems with /proc/interrupts (Linux) we poll that file and note when
+ * the interrupt counter numbers on the "keyboard" and "PS/2" lines change.
+ * (There is no reliable way, using /proc/interrupts, to detect non-PS/2
+ * mice, so it doesn't help for serial or USB mice.)
+ *
+ * None of this crap happens if we're using one of the extensions. Sadly,
+ * the XIdle extension hasn't been available for many years; the SGI
+ * extension only exists on SGIs; and the MIT extension, while widely
+ * deployed, is garbage in several ways.
*
* A third idle-detection option could be implemented (but is not): when
* running on the console display ($DISPLAY is `localhost`:0) and we're on a
#include <stdio.h>
#include <ctype.h>
#include <X11/Xlib.h>
+
+#include <X11/Xlibint.h>
+
#include <X11/Xatom.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/Shell.h>
#include <X11/Xos.h>
+#include <time.h>
+#include <sys/time.h>
#include <netdb.h> /* for gethostbyname() */
+#include <sys/types.h>
+#include <pwd.h>
#ifdef HAVE_XMU
# ifndef VMS
# include <X11/Xmu/Error.h>
# include <X11/extensions/xidle.h>
#endif /* HAVE_XIDLE_EXTENSION */
+#ifdef HAVE_XINERAMA
+# include <X11/extensions/Xinerama.h>
+#endif /* HAVE_XINERAMA */
+
#include "xscreensaver.h"
#include "version.h"
#include "yarandom.h"
#include "resources.h"
#include "visual.h"
#include "usleep.h"
+#include "auth.h"
saver_info *global_si_kludge = 0; /* I hate C so much... */
/* useful for debugging */
{ "-no-capture-stderr", ".captureStderr", XrmoptionNoArg, "off" },
-
- /* There's really no reason to have these command-line args; they just
- lead to confusion when the .xscreensaver file has conflicting values.
- */
-#if 0
- { "-splash", ".splash", XrmoptionNoArg, "on" },
- { "-capture-stderr", ".captureStderr", XrmoptionNoArg, "on" },
- { "-timeout", ".timeout", XrmoptionSepArg, 0 },
- { "-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" },
- { "-visual", ".visualID", XrmoptionSepArg, 0 },
- { "-install", ".installColormap", XrmoptionNoArg, "on" },
- { "-no-install", ".installColormap", XrmoptionNoArg, "off" },
- { "-timestamp", ".timestamp", XrmoptionNoArg, "on" },
- { "-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" },
- { "-proc-interrupts", ".procInterrupts", XrmoptionNoArg, "on" },
- { "-no-proc-interrupts", ".procInterrupts", XrmoptionNoArg, "off" },
- { "-idelay", ".initialDelay", XrmoptionSepArg, 0 },
- { "-nice", ".nice", XrmoptionSepArg, 0 },
-#endif /* 0 */
};
+#ifdef __GNUC__
+ __extension__ /* shut up about "string length is greater than the length
+ ISO C89 compilers are required to support" when including
+ the .ad file... */
+#endif
+
static char *defaults[] = {
#include "XScreenSaver_ad.h"
0
fflush (stdout);
fflush (stderr);
fprintf (stdout, "\
-xscreensaver %s, copyright (c) 1991-2002 by Jamie Zawinski <jwz@jwz.org>\n\
+xscreensaver %s, copyright (c) 1991-2008 by Jamie Zawinski <jwz@jwz.org>\n\
\n\
All xscreensaver configuration is via the `~/.xscreensaver' file.\n\
Rather than editing that file by hand, just run `xscreensaver-demo':\n\
that program lets you configure the screen saver graphically,\n\
including timeouts, locking, and display modes.\n\
-\n\
+\n",
+ si->version);
+ fprintf (stdout, "\
Just getting started? Try this:\n\
\n\
xscreensaver &\n\
For updates, online manual, and FAQ, please see the web page:\n\
\n\
http://www.jwz.org/xscreensaver/\n\
-\n",
- si->version);
+\n");
+
fflush (stdout);
fflush (stderr);
exit (1);
{
saver_info *si = global_si_kludge; /* I hate C so much... */
int i;
+ Bool fatal_p;
if (!real_stderr) real_stderr = stderr;
blurb());
for (i = 0; i < si->nscreens; i++)
- fprintf (real_stderr, "%s: screen %d: 0x%x, 0x%x, 0x%x\n",
- blurb(), i,
- RootWindowOfScreen (si->screens[i].screen),
- si->screens[i].real_vroot,
- si->screens[i].screensaver_window);
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ fprintf (real_stderr, "%s: screen %d/%d: 0x%x, 0x%x, 0x%x\n",
+ blurb(), ssi->real_screen_number, ssi->number,
+ (unsigned int) RootWindowOfScreen (si->screens[i].screen),
+ (unsigned int) si->screens[i].real_vroot,
+ (unsigned int) si->screens[i].screensaver_window);
+ }
fprintf (real_stderr, "\n"
"#######################################"
"#######################################\n\n");
- if (XmuPrintDefaultErrorMessage (dpy, error, real_stderr))
+ fatal_p = XmuPrintDefaultErrorMessage (dpy, error, real_stderr);
+
+ fatal_p = True; /* The only time I've ever seen a supposedly nonfatal error,
+ it has been BadImplementation / Xlib sequence lost, which
+ are in truth pretty damned fatal.
+ */
+
+ fprintf (real_stderr, "\n");
+
+ if (! fatal_p)
+ fprintf (real_stderr, "%s: nonfatal error.\n\n", blurb());
+ else
{
- fprintf (real_stderr, "\n");
if (si->prefs.xsync_p)
{
saver_exit (si, -1, "because of synchronous X Error");
" bug. That will cause xscreensaver to dump a `core' file to the\n"
" current directory. Please include the stack trace from that core\n"
" file in your bug report. *DO NOT* mail the core file itself!\n"
- " That won't work.\n"
+ " That won't work.\n");
+ fprintf (real_stderr,
"\n"
" http://www.jwz.org/xscreensaver/bugs.html explains how to create\n"
" the most useful bug reports, and how to examine core files.\n"
saver_exit (si, -1, 0);
}
}
- else
- fprintf (real_stderr, " (nonfatal.)\n");
+
return 0;
}
si->locking_disabled_p = True;
si->nolock_reason = "error getting password";
}
-#endif /* NO_LOCKING */
- hack_uid (si);
+ /* If locking is currently enabled, but the environment indicates that
+ we have been launched as GDM's "Background" program, then disable
+ locking just in case.
+ */
+ if (!si->locking_disabled_p && getenv ("RUNNING_UNDER_GDM"))
+ {
+ si->locking_disabled_p = True;
+ si->nolock_reason = "running under GDM";
+ }
+
+ /* If the server is XDarwin (MacOS X) then disable locking.
+ (X grabs only affect X programs, so you can use Command-Tab
+ to bring any other Mac program to the front, e.g., Terminal.)
+ */
+ if (!si->locking_disabled_p)
+ {
+ int op = 0, event = 0, error = 0;
+ Bool macos_p = False;
+
+#ifdef __APPLE__
+ /* Disable locking if *running* on Apple hardware, since we have no
+ reliable way to determine whether the server is running on MacOS.
+ Hopefully __APPLE__ means "MacOS" and not "Linux on Mac hardware"
+ but I'm not really sure about that.
+ */
+ macos_p = True;
+#endif
+
+ if (!macos_p)
+ /* This extension exists on the Apple X11 server, but not
+ on earlier versions of the XDarwin server. */
+ macos_p = XQueryExtension (si->dpy, "Apple-DRI", &op, &event, &error);
+
+ if (macos_p)
+ {
+ si->locking_disabled_p = True;
+ si->nolock_reason = "Cannot lock securely on MacOS X";
+ }
+ }
+
+#endif /* NO_LOCKING */
}
char *d = getenv ("DISPLAY");
if (!d || !*d)
{
- char ndpy[] = "DISPLAY=:0.0";
+ char *ndpy = strdup("DISPLAY=:0.0");
/* if (si->prefs.verbose_p) */ /* sigh, too early to test this... */
fprintf (stderr,
"%s: warning: $DISPLAY is not set: defaulting to \"%s\".\n",
blurb(), ndpy+8);
if (putenv (ndpy))
abort ();
+ /* don't free (ndpy) -- some implementations of putenv (BSD 4.4,
+ glibc 2.0) copy the argument, but some (libc4,5, glibc 2.1.2)
+ do not. So we must leak it (and/or the previous setting). Yay.
+ */
}
#endif /* HAVE_PUTENV */
XA_SCREENSAVER_RESPONSE = XInternAtom (si->dpy, "_SCREENSAVER_RESPONSE",
False);
XA_XSETROOT_ID = XInternAtom (si->dpy, "_XSETROOT_ID", False);
+ XA_ESETROOT_PMAP_ID = XInternAtom (si->dpy, "ESETROOT_PMAP_ID", False);
+ XA_XROOTPMAP_ID = XInternAtom (si->dpy, "_XROOTPMAP_ID", False);
XA_ACTIVATE = XInternAtom (si->dpy, "ACTIVATE", False);
XA_DEACTIVATE = XInternAtom (si->dpy, "DEACTIVATE", False);
XA_RESTART = XInternAtom (si->dpy, "RESTART", False);
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"));
+ p->verbose_p = (p->debug_p ||
+ get_boolean_resource (si->dpy, "verbose", "Boolean"));
/* Ditto, for the locking_disabled_p message. */
- p->lock_p = get_boolean_resource ("lock", "Boolean");
+ p->lock_p = get_boolean_resource (si->dpy, "lock", "Boolean");
if (p->verbose_p)
fprintf (stderr,
- "%s %s, copyright (c) 1991-2002 "
+ "%s %s, copyright (c) 1991-2008 "
"by Jamie Zawinski <jwz@jwz.org>.\n",
progname, si->version);
fprintf (stderr, "%s: in process %lu.\n", blurb(),
(unsigned long) getpid());
}
+}
+
+static void
+print_lock_failure_banner (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
/* 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)
+ if (si->locking_disabled_p)
{
p->lock_p = False;
fprintf (stderr, "%s: locking is disabled (%s).\n", blurb(),
"\t See the manual for details.\n",
blurb());
}
+
}
+#ifdef HAVE_XINERAMA
+
+static Bool
+screens_overlap_p (XineramaScreenInfo *a, XineramaScreenInfo *b)
+{
+ /* Two rectangles overlap if the max of the tops is less than the
+ min of the bottoms and the max of the lefts is less than the min
+ of the rights.
+ */
+# undef MAX
+# undef MIN
+# define MAX(A,B) ((A)>(B)?(A):(B))
+# define MIN(A,B) ((A)<(B)?(A):(B))
+
+ int maxleft = MAX(a->x_org, b->x_org);
+ int maxtop = MAX(a->y_org, b->y_org);
+ int minright = MIN(a->x_org + a->width - 1, b->x_org + b->width);
+ int minbot = MIN(a->y_org + a->height - 1, b->y_org + b->height);
+ return (maxtop < minbot && maxleft < minright);
+}
+
+
+/* Go through the list of Xinerama screen descriptions, and mark the
+ ones that appear to be insane, so that we don't use them.
+ */
+static void
+check_xinerama_sanity (int count, Bool verbose_p, XineramaScreenInfo *xsi)
+{
+ static Bool printed_p = False;
+ int i, j;
+ char err[1024];
+ *err = 0;
+
+# define X1 xsi[i].x_org
+# define X2 xsi[j].x_org
+# define Y1 xsi[i].y_org
+# define Y2 xsi[j].y_org
+# define W1 xsi[i].width
+# define W2 xsi[j].width
+# define H1 xsi[i].height
+# define H2 xsi[j].height
+
+# define WHINE() do { \
+ if (verbose_p) { \
+ if (! printed_p) { \
+ fprintf (stderr, "%s: compensating for Xinerama braindamage:\n", \
+ blurb()); \
+ printed_p = True; \
+ } \
+ fprintf (stderr, "%s: %d: %s\n", blurb(), xsi[i].screen_number,err); \
+ } \
+ xsi[i].screen_number = -1; \
+ } while(0)
+
+ /* If a screen is enclosed by any other screen, that's insane.
+ */
+ for (i = 0; i < count; i++)
+ for (j = 0; j < count; j++)
+ if (i != j &&
+ xsi[i].screen_number >= 0 &&
+ xsi[j].screen_number >= 0 &&
+ X1 >= X2 && Y1 >= Y2 && (X1+W1) <= (X2+W2) && (X1+H1) <= (X2+H2))
+ {
+ sprintf (err, "%dx%d+%d+%d enclosed by %dx%d+%d+%d",
+ W1, H1, X1, Y1,
+ W2, H2, X2, Y2);
+ WHINE();
+ continue;
+ }
+
+ /* After checking for enclosure, check for other lossage against earlier
+ screens. We do enclosure first so that we make sure to pick the
+ larger one.
+ */
+ for (i = 0; i < count; i++)
+ for (j = 0; j < i; j++)
+ {
+ if (xsi[i].screen_number < 0) continue; /* already marked */
+
+ *err = 0;
+ if (X1 == X2 && Y1 == Y2 && W1 == W2 && H1 == H2)
+ sprintf (err, "%dx%d+%d+%d duplicated", W1, H1, X1, Y1);
+
+ else if (screens_overlap_p (&xsi[i], &xsi[j]))
+ sprintf (err, "%dx%d+%d+%d overlaps %dx%d+%d+%d",
+ W1, H1, X1, Y1,
+ W2, H2, X2, Y2);
+
+ if (*err) WHINE();
+ }
+
+# undef X1
+# undef X2
+# undef Y1
+# undef Y2
+# undef W1
+# undef W2
+# undef H1
+# undef H2
+}
+
+#endif /* HAVE_XINERAMA */
+
+
+
/* Examine all of the display's screens, and populate the `saver_screen_info'
structures. Make sure this is called after hack_environment() sets $PATH.
*/
Bool found_any_writable_cells = False;
int i;
- si->nscreens = ScreenCount(si->dpy);
- si->screens = (saver_screen_info *)
- calloc(sizeof(saver_screen_info), si->nscreens);
+# ifdef HAVE_XINERAMA
+ {
+ int event, error;
+ si->xinerama_p = (XineramaQueryExtension (si->dpy, &event, &error) &&
+ XineramaIsActive (si->dpy));
+ }
+
+ if (si->xinerama_p && ScreenCount (si->dpy) != 1)
+ {
+ si->xinerama_p = False;
+ if (si->prefs.verbose_p)
+ fprintf (stderr,
+ "%s: Xinerama AND %d screens? Disabling Xinerama support!\n",
+ blurb(), ScreenCount(si->dpy));
+ }
+
+ if (si->xinerama_p)
+ {
+ int nscreens = 0;
+ XineramaScreenInfo *xsi = XineramaQueryScreens (si->dpy, &nscreens);
+ if (!xsi)
+ si->xinerama_p = False;
+ else
+ {
+ int j = 0;
+ si->screens = (saver_screen_info *)
+ calloc(sizeof(saver_screen_info), nscreens);
+ check_xinerama_sanity (nscreens, si->prefs.verbose_p, xsi);
+ for (i = 0; i < nscreens; i++)
+ {
+ if (xsi[i].screen_number < 0) /* deemed insane */
+ continue;
+ si->screens[j].x = xsi[i].x_org;
+ si->screens[j].y = xsi[i].y_org;
+ si->screens[j].width = xsi[i].width;
+ si->screens[j].height = xsi[i].height;
+ j++;
+ }
+ si->nscreens = j;
+ XFree (xsi);
+ }
+ si->default_screen = &si->screens[0];
+ si->default_screen->real_screen_p = True;
+ }
+# endif /* !HAVE_XINERAMA */
+
+ if (!si->xinerama_p)
+ {
+ si->nscreens = ScreenCount(si->dpy);
+ si->screens = (saver_screen_info *)
+ calloc(sizeof(saver_screen_info), si->nscreens);
+ si->default_screen = &si->screens[DefaultScreen(si->dpy)];
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ ssi->width = DisplayWidth (si->dpy, i);
+ ssi->height = DisplayHeight (si->dpy, i);
+ ssi->real_screen_p = True;
+ ssi->real_screen_number = i;
+ }
+ }
+
+
+# ifdef QUAD_MODE
+ /* In "quad mode", we use the Xinerama code to pretend that there are 4
+ screens for every physical screen, and run four times as many hacks...
+ */
+ if (si->prefs.quad_p)
+ {
+ int ns2 = si->nscreens * 4;
+ saver_screen_info *ssi2 = (saver_screen_info *)
+ calloc(sizeof(saver_screen_info), ns2);
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *old = &si->screens[i];
+
+ if (si->prefs.debug_p) old->width = old->width / 2;
+
+ ssi2[i*4 ] = *old;
+ ssi2[i*4+1] = *old;
+ ssi2[i*4+2] = *old;
+ ssi2[i*4+3] = *old;
+
+ ssi2[i*4 ].width /= 2;
+ ssi2[i*4 ].height /= 2;
+
+ ssi2[i*4+1].x += ssi2[i*4 ].width;
+ ssi2[i*4+1].width -= ssi2[i*4 ].width;
+ ssi2[i*4+1].height /= 2;
+
+ ssi2[i*4+2].y += ssi2[i*4 ].height;
+ ssi2[i*4+2].width /= 2;
+ ssi2[i*4+2].height -= ssi2[i*4 ].height;
+
+ ssi2[i*4+3].x += ssi2[i*4+2].width;
+ ssi2[i*4+3].y += ssi2[i*4+2].height;
+ ssi2[i*4+3].width -= ssi2[i*4+2].width;
+ ssi2[i*4+3].height -= ssi2[i*4+2].height;
+
+ ssi2[i*4+1].real_screen_p = False;
+ ssi2[i*4+2].real_screen_p = False;
+ ssi2[i*4+3].real_screen_p = False;
+ }
- si->default_screen = &si->screens[DefaultScreen(si->dpy)];
+ si->nscreens = ns2;
+ free (si->screens);
+ si->screens = ssi2;
+ si->default_screen = &si->screens[DefaultScreen(si->dpy) * 4];
+ si->xinerama_p = True;
+ }
+# endif /* QUAD_MODE */
+ /* finish initializing the screens.
+ */
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
ssi->global = si;
- ssi->screen = ScreenOfDisplay (si->dpy, i);
+
ssi->number = i;
+ ssi->screen = ScreenOfDisplay (si->dpy, ssi->real_screen_number);
+ ssi->poll_mouse_last_root_x = -1;
+ ssi->poll_mouse_last_root_y = -1;
+
+ if (!si->xinerama_p)
+ {
+ ssi->width = WidthOfScreen (ssi->screen);
+ ssi->height = HeightOfScreen (ssi->screen);
+ }
/* Note: we can't use the resource ".visual" because Xt is SO FUCKED. */
ssi->default_visual =
XtNvisual, ssi->current_visual,
XtNdepth, visual_depth (ssi->screen,
ssi->current_visual),
- 0);
+ NULL);
if (! found_any_writable_cells)
{
blurb());
}
+ /* These are incompatible (or at least, our support for them is...) */
+ if (si->xinerama_p && si->using_mit_saver_extension)
+ {
+ si->using_mit_saver_extension = False;
+ if (p->verbose_p)
+ fprintf (stderr, "%s: Xinerama in use: disabling MIT-SCREEN-SAVER.\n",
+ blurb());
+ }
+
+#ifdef HAVE_RANDR
+ query_randr_extension (si);
+#endif
+
if (!system_has_proc_interrupts_p)
{
si->using_proc_interrupts = False;
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),
- False);
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (ssi->real_screen_p)
+ start_notice_events_timer (si,
+ RootWindowOfScreen (si->screens[i].screen), False);
+ }
if (p->verbose_p)
fprintf (stderr, " done.\n");
fprintf (stderr, "%s: file \"%s\" has changed, reloading.\n",
blurb(), init_file_name());
- load_init_file (p);
+ load_init_file (si->dpy, p);
/* If a server extension is in use, and p->timeout has changed,
we need to inform the server of the new timeout. */
while (1)
{
Bool was_locked = False;
+
+ if (p->verbose_p)
+ fprintf (stderr, "%s: awaiting idleness.\n", blurb());
+
+ check_for_leaks ("unblanked A");
sleep_until_idle (si, True);
+ check_for_leaks ("unblanked B");
if (p->verbose_p)
{
/* Go around the loop and wait for the next bout of idleness,
or for the init file to change, or for a remote command to
come in, or something.
+
+ But, if locked_p is true, go ahead. This can only happen
+ if we're in "disabled" mode but a "lock" clientmessage came
+ in: in that case, we should go ahead and blank/lock the screen.
*/
- continue;
+ if (!si->locked_p)
+ continue;
}
+ /* Since we're about to blank the screen, kill the de-race timer,
+ if any. It might still be running if we have unblanked and then
+ re-blanked in a short period (e.g., when using the "next" button
+ in xscreensaver-demo.)
+ */
+ if (si->de_race_id)
+ {
+ if (p->verbose_p)
+ fprintf (stderr, "%s: stopping de-race timer (%d remaining.)\n",
+ blurb(), si->de_race_ticks);
+ XtRemoveTimeOut (si->de_race_id);
+ si->de_race_id = 0;
+ }
+
+
+ /* Now, try to blank.
+ */
+
if (! blank_screen (si))
{
/* We were unable to grab either the keyboard or mouse.
see any events, and the display would be wedged.
So, just go around the loop again and wait for the
- next bout of idleness.
+ next bout of idleness. (If the user remains idle, we
+ will next try to blank the screen again in no more than
+ 60 seconds.)
*/
+ Time retry = 60 * 1000;
+ if (p->timeout < retry)
+ retry = p->timeout;
- fprintf (stderr,
+ if (p->debug_p)
+ {
+ fprintf (stderr,
+ "%s: DEBUG MODE: unable to grab -- BLANKING ANYWAY.\n",
+ blurb());
+ }
+ else
+ {
+ fprintf (stderr,
"%s: unable to grab keyboard or mouse! Blanking aborted.\n",
- blurb());
- continue;
+ blurb());
+
+ schedule_wakeup_event (si, retry, p->debug_p);
+ continue;
+ }
}
kill_screenhack (si);
ok_to_unblank = True;
do {
+ check_for_leaks ("blanked A");
sleep_until_idle (si, False); /* until not idle */
+ check_for_leaks ("blanked B");
+
maybe_reload_init_file (si);
#ifndef NO_LOCKING
si->lock_id = 0;
}
- if (p->verbose_p)
- fprintf (stderr, "%s: awaiting idleness.\n", blurb());
+ /* Since we're unblanked now, break race conditions and make
+ sure we stay that way (see comment in timers.c.) */
+ if (! si->de_race_id)
+ de_race_timer ((XtPointer) si, 0);
}
}
static void analyze_display (saver_info *si);
+static void fix_fds (void);
int
main (int argc, char **argv)
saver_info the_si;
saver_info *si = &the_si;
saver_preferences *p = &si->prefs;
+ struct passwd *spasswd;
int i;
memset(si, 0, sizeof(*si));
global_si_kludge = si; /* I hate C so much... */
+ fix_fds();
+
# undef ya_rand_init
ya_rand_init (0);
privileged_initialization (si, &argc, argv);
hack_environment (si);
+ spasswd = getpwuid(getuid());
+ if (!spasswd)
+ {
+ fprintf(stderr, "Could not figure out who the current user is!\n");
+ return 1;
+ }
+
+ si->user = strdup(spasswd->pw_name ? spasswd->pw_name : "(unknown)");
+
+# ifndef NO_LOCKING
+ si->unlock_cb = gui_auth_conv;
+ si->auth_finished_cb = auth_finished_cb;
+# endif /* !NO_LOCKING */
+
shell = connect_to_server (si, &argc, argv);
process_command_line (si, &argc, argv);
print_banner (si);
- load_init_file (p); /* must be before initialize_per_screen_info() */
+ load_init_file(si->dpy, p); /* must be before initialize_per_screen_info() */
blurb_timestamp_p = p->timestamp_p; /* kludge */
initialize_per_screen_info (si, shell); /* also sets si->fading_possible_p */
- /* We can only issue this warnings now. */
+ /* We can only issue this warning now. */
if (p->verbose_p && !si->fading_possible_p && (p->fade_p || p->unfade_p))
fprintf (stderr,
"%s: there are no PseudoColor or GrayScale visuals.\n"
blurb(), blurb());
for (i = 0; i < si->nscreens; i++)
- if (ensure_no_screensaver_running (si->dpy, si->screens[i].screen))
- exit (1);
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (ssi->real_screen_p)
+ if (ensure_no_screensaver_running (si->dpy, si->screens[i].screen))
+ exit (1);
+ }
lock_initialization (si, &argc, argv);
+ print_lock_failure_banner (si);
if (p->xsync_p) XSynchronize (si->dpy, True);
False);
initialize_stderr (si);
+ handle_signals (si);
make_splash_dialog (si);
return 0;
}
+static void
+fix_fds (void)
+{
+ /* Bad Things Happen if stdin, stdout, and stderr have been closed
+ (as by the `sh incantation "xscreensaver >&- 2>&-"). When you do
+ that, the X connection gets allocated to one of these fds, and
+ then some random library writes to stderr, and random bits get
+ stuffed down the X pipe, causing "Xlib: sequence lost" errors.
+ So, we cause the first three file descriptors to be open to
+ /dev/null if they aren't open to something else already. This
+ must be done before any other files are opened (or the closing
+ of that other file will again free up one of the "magic" first
+ three FDs.)
+
+ We do this by opening /dev/null three times, and then closing
+ those fds, *unless* any of them got allocated as #0, #1, or #2,
+ in which case we leave them open. Gag.
+
+ Really, this crap is technically required of *every* X program,
+ if you want it to be robust in the face of "2>&-".
+ */
+ int fd0 = open ("/dev/null", O_RDWR);
+ int fd1 = open ("/dev/null", O_RDWR);
+ int fd2 = open ("/dev/null", O_RDWR);
+ if (fd0 > 2) close (fd0);
+ if (fd1 > 2) close (fd1);
+ if (fd2 > 2) close (fd2);
+}
+
+
\f
/* Processing ClientMessage events.
*/
else
{
char buf[100];
- sprintf (buf, "<<undefined atom 0x%04X>>", (unsigned long) atom);
+ sprintf (buf, "<<undefined atom 0x%04X>>", (unsigned int) atom);
return strdup (buf);
}
}
free (proto);
}
+
+static void
+bogus_clientmessage_warning (saver_info *si, XEvent *event)
+{
+#if 0 /* Oh, fuck it. GNOME likes to spew random ClientMessages at us
+ all the time. This is presumably indicative of an error in
+ the sender of that ClientMessage: if we're getting it and
+ ignoring it, then it's not reaching the intended recipient.
+ But people complain to me about this all the time ("waaah!
+ xscreensaver is printing to it's stderr and that gets my
+ panties all in a bunch!") And I'm sick of hearing about it.
+ So we'll just ignore these messages and let GNOME go right
+ ahead and continue to stumble along in its malfunction.
+ */
+
+ saver_preferences *p = &si->prefs;
+ char *str = XGetAtomName_safe (si->dpy, event->xclient.message_type);
+ Window w = event->xclient.window;
+ char wdesc[255];
+ int screen = 0;
+ Bool root_p = False;
+
+ *wdesc = 0;
+ for (screen = 0; screen < si->nscreens; screen++)
+ if (w == si->screens[screen].screensaver_window)
+ {
+ strcpy (wdesc, "xscreensaver");
+ break;
+ }
+ else if (w == RootWindow (si->dpy, screen))
+ {
+ strcpy (wdesc, "root");
+ root_p = True;
+ break;
+ }
+
+ /* If this ClientMessage was sent to the real root window instead of to the
+ xscreensaver window, then it might be intended for someone else who is
+ listening on the root window (e.g., the window manager). So only print
+ the warning if: we are in debug mode; or if the bogus message was
+ actually sent to one of the xscreensaver-created windows.
+ */
+ if (root_p && !p->debug_p)
+ return;
+
+ if (!*wdesc)
+ {
+ XErrorHandler old_handler;
+ XClassHint hint;
+ XWindowAttributes xgwa;
+ memset (&hint, 0, sizeof(hint));
+ memset (&xgwa, 0, sizeof(xgwa));
+
+ XSync (si->dpy, False);
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+ XGetClassHint (si->dpy, w, &hint);
+ XGetWindowAttributes (si->dpy, w, &xgwa);
+ XSync (si->dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (si->dpy, False);
+
+ screen = (xgwa.screen ? screen_number (xgwa.screen) : -1);
+
+ sprintf (wdesc, "%.20s / %.20s",
+ (hint.res_name ? hint.res_name : "(null)"),
+ (hint.res_class ? hint.res_class : "(null)"));
+ if (hint.res_name) XFree (hint.res_name);
+ if (hint.res_class) XFree (hint.res_class);
+ }
+
+ fprintf (stderr, "%s: %d: unrecognised ClientMessage \"%s\" received\n",
+ blurb(), screen, (str ? str : "(null)"));
+ fprintf (stderr, "%s: %d: for window 0x%lx (%s)\n",
+ blurb(), screen, (unsigned long) w, wdesc);
+ if (str) XFree (str);
+
+#endif /* 0 */
+}
+
+
Bool
handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p)
{
/* Preferences might affect our handling of client messages. */
maybe_reload_init_file (si);
- if (event->xclient.message_type != XA_SCREENSAVER)
- {
- char *str;
- str = XGetAtomName_safe (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)
+ if (event->xclient.message_type != XA_SCREENSAVER ||
+ event->xclient.format != 32)
{
- fprintf (stderr, "%s: ClientMessage of format %d received, not 32\n",
- blurb(), event->xclient.format);
+ bogus_clientmessage_warning (si, event);
return False;
}
{
if (until_idle_p)
{
+ if (p->mode == DONT_BLANK)
+ {
+ clientmessage_response(si, window, True,
+ "ACTIVATE ClientMessage received in DONT_BLANK mode.",
+ "screen blanking is currently disabled.");
+ return False;
+ }
+
clientmessage_response(si, window, False,
"ACTIVATE ClientMessage received.",
"activating.");
char buf2 [255];
long which = event->xclient.data.l[1];
+ if (p->mode == DONT_BLANK)
+ {
+ clientmessage_response(si, window, True,
+ "SELECT ClientMessage received in DONT_BLANK mode.",
+ "screen blanking is currently disabled.");
+ return False;
+ }
+
sprintf (buf, "SELECT %ld ClientMessage received.", which);
sprintf (buf2, "activating (%ld).", which);
clientmessage_response (si, window, False, buf, buf2);
XSync (si->dpy, False);
}
- fflush (stdout);
- fflush (stderr);
- if (real_stdout) fflush (real_stdout);
- if (real_stderr) fflush (real_stderr);
- /* 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. */
+ restart_process (si); /* does not return */
+ abort();
}
else
clientmessage_response (si, window, True,
else if (type == XA_DEMO)
{
long arg = event->xclient.data.l[1];
- Bool demo_one_hack_p = (arg == 300);
+ Bool demo_one_hack_p = (arg == 5000);
if (demo_one_hack_p)
{
}
else if (type == XA_THROTTLE)
{
+ /* The THROTTLE command is deprecated -- it predates the XDPMS
+ extension. Instead of using -throttle, users should instead
+ just power off the monitor (e.g., "xset dpms force off".)
+ In a few minutes, xscreensaver will notice that the monitor
+ is off, and cease running hacks.
+ */
if (si->throttled_p)
clientmessage_response (si, window, True,
"THROTTLE ClientMessage received, but "
False
# endif
}, { "XINERAMA", "Xinerama",
+# ifdef HAVE_XINERAMA
+ True
+# else
+ False
+# endif
+ }, { "RANDR", "Resize-and-Rotate",
+# ifdef HAVE_RANDR
+ True
+# else
+ False
+# endif
+ }, { "Apple-DRI", "Apple-DRI (XDarwin)",
True
},
};
- fprintf (stderr, "%s: running on display \"%s\" (%d screen%s).\n",
+ fprintf (stderr, "%s: running on display \"%s\" (%d %sscreen%s).\n",
blurb(),
DisplayString(si->dpy),
- si->nscreens, (si->nscreens == 1 ? "" : "s"));
+ si->nscreens,
+ (si->xinerama_p ? "Xinerama " : ""),
+ (si->nscreens == 1 ? "" : "s"));
fprintf (stderr, "%s: vendor is %s, %d.\n", blurb(),
ServerVendor(si->dpy), VendorRelease(si->dpy));
j = strlen (buf);
strcat (buf, exts[i].desc);
if (!exts[i].useful_p)
- {
- int k = j + 18;
- while (strlen (buf) < k) strcat (buf, " ");
- strcat (buf, "<-- not supported at compile time!");
- }
+ strcat (buf, " (disabled at compile time)");
fprintf (stderr, "%s\n", buf);
}
for (i = 0; i < si->nscreens; i++)
{
+ saver_screen_info *ssi = &si->screens[i];
unsigned long colormapped_depths = 0;
unsigned long non_mapped_depths = 0;
XVisualInfo vi_in, *vi_out;
int out_count;
- vi_in.screen = i;
+
+ if (!ssi->real_screen_p) continue;
+
+ vi_in.screen = ssi->real_screen_number;
vi_out = XGetVisualInfo (si->dpy, VisualScreenMask, &vi_in, &out_count);
if (!vi_out) continue;
for (j = 0; j < out_count; j++)
if (colormapped_depths)
{
- fprintf (stderr, "%s: screen %d colormapped depths:", blurb(), i);
+ fprintf (stderr, "%s: screen %d colormapped depths:", blurb(),
+ ssi->real_screen_number);
for (j = 0; j < 32; j++)
if (colormapped_depths & (1 << j))
fprintf (stderr, " %d", j);
if (non_mapped_depths)
{
fprintf (stderr, "%s: screen %d non-colormapped depths:",
- blurb(), i);
+ blurb(), ssi->real_screen_number);
for (j = 0; j < 32; j++)
if (non_mapped_depths & (1 << j))
fprintf (stderr, " %d", j);
fprintf (stderr, ".\n");
}
}
+
+ if (si->xinerama_p)
+ {
+ fprintf (stderr, "%s: Xinerama layout:\n", blurb());
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ fprintf (stderr, "%s: %c %d/%d: %dx%d+%d+%d\n",
+ blurb(),
+ (ssi->real_screen_p ? '+' : ' '),
+ ssi->number, ssi->real_screen_number,
+ ssi->width, ssi->height, ssi->x, ssi->y);
+ }
+ }
}
Bool
not_on_console = False;
else if (gethostname (localname, sizeof (localname)))
not_on_console = True; /* can't find hostname? */
+ else if (!strncmp (dpyname, "/tmp/launch-", 12)) /* MacOS X launchd */
+ not_on_console = False;
else
{
/* We have to call gethostbyname() on the result of gethostname()
}
return !not_on_console;
}
+
+
+/* Do a little bit of heap introspection...
+ */
+void
+check_for_leaks (const char *where)
+{
+#if defined(HAVE_SBRK) && defined(LEAK_PARANOIA)
+ static unsigned long last_brk = 0;
+ int b = (unsigned long) sbrk(0);
+ if (last_brk && last_brk < b)
+ fprintf (stderr, "%s: %s: brk grew by %luK.\n",
+ blurb(), where,
+ (((b - last_brk) + 1023) / 1024));
+ last_brk = b;
+#endif /* HAVE_SBRK */
+}
projects / xscreensaver / blobdiff