Fixes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/577
This patch replaces the instances of trunc in miPointerSetPosition by
floor, thereby removing the incorrect behaviour with subpixel pointer
locations between -1 and 0.
This is the relevant code fragment:
/* In the event we actually change screen or we get confined, we just
* drop the float component on the floor
* FIXME: only drop remainder for ConstrainCursorHarder, not for screen
* crossings */
if (x != trunc(*screenx))
*screenx = x;
if (y != trunc(*screeny))
*screeny = y;
The behaviour of this code does not match its comment for subpixel
coordinates between -1 and 0. For example, if *screenx is -0.5, the
preceding code would (correctly) clamp x to 0, but this would not be
detected by this condition, since 0 == trunc(-0.5), leaving *screenx
at -0.5, out of bounds.
This causes undesirable behaviour in GTK3 code using xi2, where negative
subpixel coordinates like this would (to all appearances randomly)
remove the focus from windows aligned with the zero boundary when the
mouse hits the left or top screen boundaries.
The other occurences of trunc in miPointerSetPosition have a more subtle
effect which would prevent proper clamping if there is a pointer limit
at a negative integer rather than at 0. This patch changes these to
floor for consistency.
Signed-off-by: Willem Jan Palenstijn <wjp@usecode.org>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1451>
This function is only used inside the same .c file where it's defined,
no outside users, also not in drivers. Thus no need to keep it exported.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1468>
Previously, AllocateGlyph would return a new glyph with refcount=0 and a
re-used glyph would end up not changing the refcount at all. The
resulting glyph_new array would thus have multiple entries pointing to
the same non-refcounted glyphs.
AddGlyph may free a glyph, resulting in a UAF when the same glyph
pointer is then later used.
Fix this by returning a refcount of 1 for a new glyph and always
incrementing the refcount for a re-used glyph, followed by dropping that
refcount back down again when we're done with it.
CVE-2024-31083, ZDI-CAN-22880
This vulnerability was discovered by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1463>
Compiler gives warning:
../config/wscons.c: At top level:
../config/wscons.c:262:1: warning: no previous prototype for ‘config_wscons_init’ [-Wmissing-prototypes]
262 | config_wscons_init(void)
| ^~~~~~~~~~~~~~~~~~
../config/wscons.c:270:1: warning: no previous prototype for ‘config_wscons_fini’ [-Wmissing-prototypes]
270 | config_wscons_fini(void)
| ^~~~~~~~~~~~~~~~~~
Problem is: commit bcee84c3e4 wanted to enable
wscons support on NetBSD, but only added compiling config/wscons.c, but didn't
enable setting the CONFIG_WSCONS symbol, so it won't be called at all.
Fixes: bcee84c3e4
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1450>
When X11 isn't installed directly at /usr hierarchy (eg. NetBSD uses
/usr/X11R7/), build breaks:
../test/list.c:31:10: fatal error: X11/Xlib.h: No such file or directory
31 | #include <X11/Xlib.h>
| ^~~~~~~~~~~~
Needs explicitly dependency on libX11, so the include path is added.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1442>
Fix meson warning:
> WARNING: Project targeting '>= 0.56.0' but tried to use feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1448>
The Xprintf() function is deprecated. Most of it's call sites had been moved
to asprintf(), so also do it for the remaining two ones.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1449>
fix warning:
> ../test/xi2/protocol-eventconvert.c:276:9: warning: variable 'buttons' set but not used [-Wunused-but-set-variable]
> int buttons, valuators;
> ^
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1429>
fix warning:
> ../test/simple-xinit.c:58:1: warning: function 'usage' could be declared with attribute 'noreturn' [-Wmissing-noreturn]
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1429>
fix warning:
> ../os/rpcauth.c:159:16: warning: result of comparison of constant -1 with expression of type 'XID' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
> if (rpc_id == ~0L)
> ~~~~~~ ^ ~~~
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1431>
Implement fractional scale with Xwayland rootful by scaling the content
to the desired fractional scale using a viewport.
For now this applies to Xwayland rootful only.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Fractional scaling may not be available, or not suitable for the current
configuration (e.g. if running rootless).
Add a helper function to tell whether fractional scaling should be used.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
This is needed to support the "wp-fractional-scale-v1" protocol.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
To support the fractional scale protocol, we need a viewport.
Rename the existing function xwl_window_enable_viewport() to avoid
confusion with the viewport we use for fullscreen XRandR emulation in
rootless mode.
No functional change.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Recompute and update the global screen scale based on the different
outputs the root window is placed on.
For backward compatibility, this functionality is however disabled by
default and can be enabled using a new command line option "-hidpi".
That option has no effect if Xwayland is running rootless.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Recompute the window scale each time the window enters or leaves an
output.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Add a list of outputs a window is placed on, adding an output whenever
the surface enters the output and removing it once it leaves the output.
Note that not all Wayland compositors actually send a leave surface
event on output removal, so we need to make sure to remove the output
from the list for each window, otherwise we might end up pointing to
freed memory.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
By using a sensible scale factor for input even when there is no
viewport enabled, no need to have xwl_window_has_viewport_enabled()
public anymore.
Small cleanup, no functional change.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
The viewport's scale_x/y is currently applied to the motion event only.
Apply the same viewport_scale_x/y to all relevant input coordinates.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
When the viewport is disabled, set the scale x/y back to 1.0 so that we
can apply the scale factor regardless of the viewport being enabled.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
The scale_x/y factor applies when a viewport is in use, rename the
fields to reflect that and distinguish these from the other scale
factors such as the core protocol surface scale and the fractional
scaling.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Apply the scale factor to the root window and adjust the coordinates and
hotspot location for cursors.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
For now, the global surface scale is always 1, no functional change.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Keep track of the output scales as advertised by the wl_output protocol.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Advertise the scaling factor applied to the Xwayland output using the
mechanism of CRTC transforms.
That allows for X11 clients to query the scale factor using XRandR.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Add a scale factor to the Xwayland output and take the scale into
account when computing the screen size.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
The mode size can be different from the actual output size when a
transformation is at play.
Store the actual mode width/height as well in preparation for adding
support for transforms.
No functional change.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Use double precision floating point for the screen size to reduce the
rounding issues when using fractional scaling.
Introduce a couple of simple convenient functions that round the
floating point value into an integer and use it in place of directly
accessing the xwl_screen width/height for integer computation.
This is preparation work for the introduction of fractional scaling,
there should be no functional change at this point.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-By: Kenny Levinsen <kl@kl.wtf>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1197>
Commit 0d4a7ed6 put the definition of pcvt_version inside #ifdef __NetBSD__
but left one use of it outside of the ifdefs, resulting in a build failure
on FreeBSD 14.0 in the gitlab CI for xf86-input-keyboard.
../hw/xfree86/os-support/bsd/bsd_init.c:540:21:
error: use of undeclared identifier 'pcvt_version'
pcvt_version.rmajor, pcvt_version.rminor);
^
../hw/xfree86/os-support/bsd/bsd_init.c:540:42:
error: use of undeclared identifier 'pcvt_version'
pcvt_version.rmajor, pcvt_version.rminor);
^
Fixes: 0d4a7ed68 ("bsd_init.c: fix build on OpenBSD")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1424>
We've got three #define's that are all set at once, on enable_debugging.
A comment in meson.build already asks for consolidating them into one,
so just do it now.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1409>
Willem Jan Palenstijn
Enrico Weigelt, metux IT consult
Peter Hutterer
Alan Coopersmith
Olivier Fourdan