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touch-input: Don't dereference NULL pointer during full screen fade

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If a full screen program is fading out and a touch start happens, it
will result in a NULL pointer dereference when weston_touch_set_focus
tries to derefernce view->surface->resource.

Instead, this patch sets the focus to NULL, which should be the
same as if the program was destroyed during the touch anyway.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=78706
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Derek Foreman 2014-09-04 10:23:05 -05:00 committed by Pekka Paalanen
parent bfb4ade1a0
commit 362656bfa3
2 changed files with 13 additions and 3 deletions
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6
desktop-shell/shell.c
View file

@ -4444,10 +4444,14 @@ fullscreen_binding(struct weston_seat *seat, uint32_t time, uint32_t button, voi
static void
touch_move_binding(struct weston_seat *seat, uint32_t time, void *data)
{
struct weston_surface *focus = seat->touch->focus->surface;
struct weston_surface *focus;
struct weston_surface *surface;
struct shell_surface *shsurf;
if (seat->touch->focus == NULL)
return;
focus = seat->touch->focus->surface;
surface = weston_surface_get_main_surface(focus);
if (surface == NULL)
return;

10
src/input.c
View file

@ -1471,8 +1471,14 @@ weston_touch_set_focus(struct weston_seat *seat, struct weston_view *view)
}
if (view) {
struct wl_client *surface_client =
wl_resource_get_client(view->surface->resource);
struct wl_client *surface_client;
if (!view->surface->resource) {
seat->touch->focus = NULL;
return;
}
surface_client = wl_resource_get_client(view->surface->resource);
move_resources_for_client(focus_resource_list,
&seat->touch->resource_list,
surface_client);