From c9f8c5a9bd0fdf399632b0142fb277955d35e0d3 Mon Sep 17 00:00:00 2001
From: Serghey Rodin <serghey.rodin@gmail.com>
Date: Tue, 7 Oct 2014 00:25:06 +0300
Subject: [PATCH] improved dns record validation

---
 func/main.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/func/main.sh b/func/main.sh
index dd4dab0e..16f5be6d 100644
--- a/func/main.sh
+++ b/func/main.sh
@@ -764,6 +764,22 @@ validate_format_common() {
         log_event "$E_INVALID" "$EVENT"
         exit $E_INVALID
     fi
+    if [[ "$1" =~ @ ]] && [ ${#1} -gt 1 ] ; then
+        echo "Error: @ can not be mixed"
+        log_event "$E_INVALID" "$EVENT"
+        exit $E_INVALID
+    fi
+    if [[ $1 =~ \* ]]; then
+        if [[ ! $1 =~ \*$ ]]; then
+            echo "Error: * can be used only at the end"
+            log_event "$E_INVALID" "$EVENT"
+            exit $E_INVALID
+        fi
+        if [ "$(echo $1 | grep -o '*'|wc -l)" -gt 1 ]; then
+            log_event "$E_INVALID" "$EVENT"
+            echo "Error: * can be used only once"
+        fi
+    fi
 }
 
 # DNS record value