From bb256fae9da26887f70ae0a7b50a8121fcde5969 Mon Sep 17 00:00:00 2001
From: Roman Hoellen <info@hoellen.eu>
Date: Thu, 13 Sep 2018 11:37:33 +0200
Subject: [PATCH] error hardening

---
 renew_cert.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/renew_cert.sh b/renew_cert.sh
index b2e5c80..41ed458 100644
--- a/renew_cert.sh
+++ b/renew_cert.sh
@@ -131,7 +131,13 @@ do
     continue
   fi
 
-  mv -f "$arg/tmp.pem" "$arg/$NAME.pem"
+  if [ -s "$arg/tmp.pem" ]; then
+    mv -f "$arg/tmp.pem" "$arg/$NAME.pem"
+  else
+    echo "New certificate for \"$NAME\" doesn't exists or is empty"
+    rm -rf "$arg/tmp.pem"
+    continue
+  fi
 
   echo "Certificate for \"$NAME\" successfully created!"
   counter=$((counter+1))