From 2911a2388ee97fa3ac80fda2fd7b9633d1bf3ac3 Mon Sep 17 00:00:00 2001 From: Ulrich Sibiller Date: Wed, 15 May 2019 19:54:24 +0200 Subject: libNX_X11: add additional checks for dpy and xkb We have seen crashes during session shutdown/connection problems here. These patches should avoid them. There's no proper way to test them, but they should do no harm.. Fixes ArcticaProject/nx-libs#801 Fixes https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=695 --- nx-X11/lib/src/xkb/XKBBind.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/nx-X11/lib/src/xkb/XKBBind.c b/nx-X11/lib/src/xkb/XKBBind.c index 068e8f2a0..ffe5ad9d7 100644 --- a/nx-X11/lib/src/xkb/XKBBind.c +++ b/nx-X11/lib/src/xkb/XKBBind.c @@ -108,7 +108,21 @@ XKeycodeToKeysym(Display *dpy, _XkbCheckPendingRefresh(dpy, dpy->xkb_info); +#ifdef NX_TRANS_SOCKET + /* + check again, we have seen cases where the connection broke + during CheckPendingEvents(), followed by a crash when accessing + dpy. See https://github.com/ArcticaProject/nx-libs/issues/801 + */ + if (_XkbUnavailable(dpy)) + return _XKeycodeToKeysym(dpy, kc, col); +#endif + xkb = dpy->xkb_info->desc; +#ifdef NX_TRANS_SOCKET + if (xkb == NULL) + return _XKeycodeToKeysym(dpy, kc, col); +#endif if ((kc < xkb->min_key_code) || (kc > xkb->max_key_code)) return NoSymbol; -- cgit v1.2.3