1 files changed, 48 insertions, 0 deletions
diff --git a/src/lib/krb4/strnlen.c b/src/lib/krb4/strnlen.c
new file mode 100644
index 0000000000..2c9a026f92
--- /dev/null
+++ b/src/lib/krb4/strnlen.c
@@ -0,0 +1,48 @@
+/*
+ * lib/krb4/strnlen.c
+ *
+ * Copyright 2000 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ * 
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ * 
+ */
+
+#include <stddef.h>
+#include "krb.h"
+/*
+ * krb_strnlen()
+ *
+ * Return the length of the string if a NUL is found in the first n
+ * bytes, otherwise, -1.
+ */
+
+KRB5_CALLCONV int
+krb_strnlen(const char *s, int n)
+{
+    int i = 0;
+
+    for (i = 0; i < n; i++) {
+        if (s[i] == '\0') {
+            return i;
+	}
+    }
+    return -1;
+}