Avoid crashing when buggy applications check for capabilities without

setting up terminal description first

2 files changed, 50 insertions, 6 deletions

diff --git a/lib/libtermlib/Makefile b/lib/libtermlib/Makefile
index 5282fc60683..31a0e9b2814 100644
--- a/lib/libtermlib/Makefile
+++ b/lib/libtermlib/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.1 1996/05/31 05:40:02 tholo Exp $
+#	$OpenBSD: Makefile,v 1.2 1996/08/31 02:36:59 tholo Exp $
 #
 # Copyright (c) 1996 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
 # All rights reserved.
@@ -31,11 +31,12 @@
 
 LIB=		termlib
 SRCS=		captoinfo.c def_prog_mode.c def_shell_mode.c del_curterm.c \
-		fillcap.c findcap.c findinfo.c getterm.c mvcur.c outc.c putp.c \
-		reset_prog_mode.c reset_shell_mode.c restartterm.c setterm.c \
-		setupterm.c set_curterm.c tgetent.c tgetflag.c tgetnum.c \
-		tgetstr.c tgoto.c tigetflag.c tigetnum.c tigetstr.c tparm.c \
-		tputs.c tty_init.c vidattr.c vidputs.c captoidx.c infotoidx.c \
+		fillcap.c findcap.c findinfo.c getterm.c globals.c mvcur.c \
+		outc.c putp.c reset_prog_mode.c reset_shell_mode.c \
+		restartterm.c setterm.c setupterm.c set_curterm.c tgetent.c \
+		tgetflag.c tgetnum.c tgetstr.c tgoto.c tigetflag.c tigetnum.c \
+		tigetstr.c tparm.c tputs.c tty_init.c vidattr.c vidputs.c \
+		captoidx.c infotoidx.c \
 		boolnames.c boolcodes.c boolfnames.c \
 		numnames.c  numcodes.c  numfnames.c \
 		strnames.c  strcodes.c  strfnames.c
diff --git a/lib/libtermlib/globals.c b/lib/libtermlib/globals.c
new file mode 100644
index 00000000000..2de158e8bff
--- /dev/null
+++ b/lib/libtermlib/globals.c
@@ -0,0 +1,43 @@
+/*	$OpenBSD: globals.c,v 1.1 1996/08/31 02:36:59 tholo Exp $	*/
+
+/*
+ * Copyright (c) 1996 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by SigmaSoft, Th.  Lockert.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char rcsid[] = "$OpenBSD: globals.c,v 1.1 1996/08/31 02:36:59 tholo Exp $";
+#endif
+
+#include "term.h"
+
+static TERMINAL empty = {
+	-1, 9600, {}, {}, "dumb", {}, { 80, 0, 24 }, {}
+	};
+
+TERMINAL *cur_term = &empty;