From b71f85ec315be591d2a964be6c2a23b0d0f6e632 Mon Sep 17 00:00:00 2001
From: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date: Tue, 16 Jan 2018 10:35:37 +0100
Subject: [PATCH] stratum: show reason of auth failure

---
 util.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/util.cpp b/util.cpp
index 152093d..3141305 100644
--- a/util.cpp
+++ b/util.cpp
@@ -1354,7 +1354,11 @@ bool stratum_authorize(struct stratum_ctx *sctx, const char *user, const char *p
 
 	if (!res_val || json_is_false(res_val) ||
 	    (err_val && !json_is_null(err_val)))  {
-		applog(LOG_ERR, "Stratum authentication failed");
+		if (err_val && json_is_array(err_val)) {
+			const char* reason = json_string_value(json_array_get(err_val, 1));
+			applog(LOG_ERR, "Stratum authentication failed (%s)", reason);
+		}
+		else applog(LOG_ERR, "Stratum authentication failed");
 		goto out;
 	}