File strongswan-4.3.4-snprintf-fix.diff of Package strongswan

From 69673e76e7ac8f195a872c7753ba7cc5cd139eed Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Fri, 18 Jun 2010 09:28:11 +0200
Subject: [PATCH] snprintf() fixes, for version 4.3.4

---
 src/libstrongswan/utils/identification.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/src/libstrongswan/utils/identification.c b/src/libstrongswan/utils/identification.c
index 10daf46..85925e0 100644
--- a/src/libstrongswan/utils/identification.c
+++ b/src/libstrongswan/utils/identification.c
@@ -300,6 +300,10 @@ static void dntoa(chunk_t dn, char *buf, size_t len)
 		{
 			written = snprintf(buf, len,"%s=", oid_names[oid].name);
 		}
+		if (written < 0 || written >= len)
+		{
+			break;
+		}
 		buf += written;
 		len -= written;
 		
@@ -311,12 +315,20 @@ static void dntoa(chunk_t dn, char *buf, size_t len)
 		{
 			written = snprintf(buf, len, "%#B", &data);
 		}
+		if (written < 0 || written >= len)
+		{
+			break;
+		}
 		buf += written;
 		len -= written;
 		
 		if (data.ptr + data.len != dn.ptr + dn.len)
 		{
 			written = snprintf(buf, len, ", ");
+			if (written < 0 || written >= len)
+			{
+				break;
+			}
 			buf += written;
 			len -= written;
 		}
--
1.7.0.4