diff --git a/hook.sh b/hook.sh
new file mode 100755
index 0000000..e8f65b8
--- /dev/null
+++ b/hook.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+SQLITE="/usr/bin/sqlite3"
+if [ -n $OPENVPN_DBFILE ]; then
+	OPENVPN_DBFILE="ovpn_session.db"
+fi
+
+db_query(){
+	result=$($SQLITE $OPENVPN_DBFILE "$1" 2>&1)
+	if [ $? -ne 0 ]; then
+		echo Error executing SQL \
+			\""$(echo "$1" | tr -d "\n")"\". $result 1>&2
+		return 1
+	else
+		echo $result
+	fi
+	return 0
+}
+
+# db_query 'insert into a123 (number) values (1);'