From 5e75f50b704194c8b1444b7dad4d2e74fe5d51e4 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Mon, 27 Jan 2014 13:50:28 +0100
Subject: [PATCH] identification: Fix printing of empty RDNs on FreeBSD

On FreeBSD (null) is printed for NULL even if the precision is 0.
---
 src/libstrongswan/utils/identification.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/libstrongswan/utils/identification.c b/src/libstrongswan/utils/identification.c
index 9c43ad570..e7eb63bc6 100644
--- a/src/libstrongswan/utils/identification.c
+++ b/src/libstrongswan/utils/identification.c
@@ -332,8 +332,13 @@ static void dntoa(chunk_t dn, char *buf, size_t len)
 		buf += written;
 		len -= written;
 
+		written = 0;
 		chunk_printable(data, &printable, '?');
-		written = snprintf(buf, len, "%.*s", (int)printable.len, printable.ptr);
+		if (printable.ptr)
+		{
+			written = snprintf(buf, len, "%.*s", (int)printable.len,
+							   printable.ptr);
+		}
 		chunk_free(&printable);
 		if (written < 0 || written >= len)
 		{