From 6a7a9d668e5a23ad5d1c0a1630c7b2c2b82ef19c Mon Sep 17 00:00:00 2001
From: Alexandre Aubin <alex.aubin@mailoo.org>
Date: Sat, 31 Oct 2020 13:53:19 +0100
Subject: [PATCH] Restore ngx logging used by fail2ban to detect failed logging
 attempt

---
 helpers.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/helpers.lua b/helpers.lua
index c70463e..0fcd332 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -381,11 +381,15 @@ function authenticate(user, password)
             ensure_user_password_uses_strong_hash(connected, user, password)
         end
         cache:add(user.."-password", password, conf["session_timeout"])
+        ngx.log(ngx.NOTICE, "Connected as: "..user)
         logger.info("User "..user.." succesfully authenticated from "..ngx.var.remote_addr)
         return user
 
     -- Else, the username/email or the password is wrong
     else
+        -- N.B. : the ngx.log is important and is related to the regex used by
+        -- the fail2ban rule to detect (and ban) failed login attempts
+        ngx.log(ngx.ERR, "Connection failed for: "..user)
         logger.error("Authentication failure for user "..user.." from "..ngx.var.remote_addr)
         return false
     end