Add missing error check for yp_get_default_domain()

Avoids a crash when no default domain is set.

from hshoexer
ok deraadt who had the same diff

diff --git a/usr.sbin/ypbind/ypbind.c b/usr.sbin/ypbind/ypbind.c
index 6a1c5d9..6193961 100644 (file)
--- a/usr.sbin/ypbind/ypbind.c
+++ b/usr.sbin/ypbind/ypbind.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ypbind.c,v 1.78 2023/03/08 04:43:15 guenther Exp $ */
+/*     $OpenBSD: ypbind.c,v 1.79 2023/11/27 18:37:53 tb Exp $ */
 
 /*
  * Copyright (c) 1992, 1993, 1996, 1997, 1998 Theo de Raadt <deraadt@openbsd.org>
@@ -341,8 +341,7 @@ main(int argc, char *argv[])
        DIR *dirp;
        struct dirent *dent;
 
-       yp_get_default_domain(&domain);
-       if (domain[0] == '\0') {
+       if (yp_get_default_domain(&domain) != 0 || domain[0] == '\0') {
                fprintf(stderr, "domainname not set. Aborting.\n");
                exit(1);
        }