From cd382100edfa7077b2c4d42bae7af355e112d95b Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Tue, 25 Nov 2008 12:51:17 +0000
Subject: Protection against non-ascii.

---
 libmdocml.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libmdocml.c')

diff --git a/libmdocml.c b/libmdocml.c
index 6fc5d32e..2dfc2797 100644
--- a/libmdocml.c
+++ b/libmdocml.c
@@ -17,6 +17,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 #include <assert.h>
+#include <ctype.h>
 #include <fcntl.h>
 #include <err.h>
 #include <stdio.h>
@@ -188,6 +189,11 @@ again:
 		return(md_run_leave(args, mbuf, rbuf, 0, p));
 
 	for (i = 0; i < sz; i++) {
+		if ( ! isascii(rbuf->buf[i])) {
+			warnx("%s: non-ascii char (line %zu, col %zu)",
+					rbuf->name, rbuf->line, pos);
+			return(md_run_leave(args, mbuf, rbuf, -1, p));
+		}
 		if ('\n' != rbuf->buf[i]) {
 			if (pos < BUFFER_LINE) {
 				/* LINTED */
-- 
cgit