From 2335290a56cd3eece629fffff40595015c3ed6e5 Mon Sep 17 00:00:00 2001
From: electron128 <unknown@unknown.com>
Date: Thu, 19 Mar 2015 08:43:40 +0000
Subject: [PATCH] added check for empty author id in gxs group creation

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@8050 b45a01b8-16f6-495d-af2f-9b41ad6348cc
---
 libretroshare/src/gxs/rsgenexchange.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libretroshare/src/gxs/rsgenexchange.cc b/libretroshare/src/gxs/rsgenexchange.cc
index f5e9e4998..7b0a455b1 100644
--- a/libretroshare/src/gxs/rsgenexchange.cc
+++ b/libretroshare/src/gxs/rsgenexchange.cc
@@ -470,7 +470,13 @@ int RsGenExchange::createGroupSignatures(RsTlvKeySignatureSet& signSet, RsTlvBin
 
     if (needIdentitySign)
     {
-        if(mGixs)
+        if(grpMeta.mAuthorId.isNull())
+        {
+            std::cerr << "RsGenExchange::createGroupSignatures() ";
+            std::cerr << "Group signature is required by service, but the author id is null." << std::endl;
+            id_ret = SIGN_FAIL;
+        }
+        else if(mGixs)
         {
             bool haveKey = mGixs->havePrivateKey(grpMeta.mAuthorId);