From e913f3689a62ba5992238db9b7cab6fd1a67e49d Mon Sep 17 00:00:00 2001
From: csoler <csoler@users.sourceforge.net>
Date: Thu, 4 May 2017 21:40:32 +0200
Subject: [PATCH] fixed crash when trying to deserialize an empty buffer in
 rsrecogn

---
 libretroshare/src/util/rsrecogn.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libretroshare/src/util/rsrecogn.cc b/libretroshare/src/util/rsrecogn.cc
index f42a4dd6f..8580c7780 100644
--- a/libretroshare/src/util/rsrecogn.cc
+++ b/libretroshare/src/util/rsrecogn.cc
@@ -552,6 +552,9 @@ RsGxsRecognTagItem *RsRecogn::extractTag(const std::string &encoded)
     std::vector<uint8_t> buffer = Radix64::decode(encoded);
     pktsize = buffer.size();
 
+    if(buffer.empty())
+        return NULL ;
+
 	RsGxsRecognSerialiser serialiser;
     RsItem *item = serialiser.deserialise(buffer.data(), &pktsize);