From 3a0807251c47cf5524adbd8c7cd02a7135acaf33 Mon Sep 17 00:00:00 2001
From: Markus Makela <markus.makela@mariadb.com>
Date: Mon, 30 Mar 2015 15:43:51 +0300
Subject: [PATCH] Fix to MXS-54: https://mariadb.atlassian.net/browse/MXS-54
 Added log messages for failed authentication attempts.

---
 server/modules/protocol/mysql_client.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/server/modules/protocol/mysql_client.c b/server/modules/protocol/mysql_client.c
index 5a9591c8c..6325016d6 100644
--- a/server/modules/protocol/mysql_client.c
+++ b/server/modules/protocol/mysql_client.c
@@ -530,6 +530,12 @@ static int gw_mysql_do_authentication(DCB *dcb, GWBUF *queue) {
 	if (auth_ret == 0) {
 		dcb->user = strdup(client_data->user);
 	}
+	else
+	{
+	    skygw_log_write(LOGFILE_ERROR,
+		     "%s: login attempt for user '%s', authentication failed.",
+		     dcb->service->name, username);
+	}
 
 	/* let's free the auth_token now */
 	if (auth_token) {