1 files changed, 62 insertions, 0 deletions
diff --git a/usr/src/lib/libmail/common/casncmp.c b/usr/src/lib/libmail/common/casncmp.c
new file mode 100644
index 0000000000..46f750f9ab
--- /dev/null
+++ b/usr/src/lib/libmail/common/casncmp.c
@@ -0,0 +1,62 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+/*
+ * Copyright (c) 1999, by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+/*LINTLIBRARY*/
+
+/*
+ *  NAME
+ *	casncmp - compare strings ignoring case
+ *
+ *  SYNOPSIS
+ *	int casncmp(char *s1, char *s2, ssize_t n)
+ *
+ *  DESCRIPTION
+ *	Compare two strings ignoring case differences.
+ *	Stop after n bytes or the trailing NUL.
+ */
+
+#include "synonyms.h"
+#include "libmail.h"
+#include <ctype.h>
+#include <sys/types.h>
+
+int
+casncmp(char *s1, char *s2, ssize_t n)
+{
+	if (s1 == s2)
+		return (0);
+	while ((--n >= 0) && (tolower(*s1) == tolower(*s2))) {
+		s2++;
+		if (*s1++ == '\0')
+			return (0);
+	}
+	return ((n < 0)? 0: (*s1 - *s2));
+}