From 11f71a05c7532ad7c581232640e73b722bb55563 Mon Sep 17 00:00:00 2001
From: NickOvt <nikolai@zone.ee>
Date: Thu, 3 Oct 2024 11:12:50 +0300
Subject: [PATCH] fix(log-headerfromvalue): graylog header from value should be
 MIME decoded before logging ZMS-138 (#46)

---
 index.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 409da68..b66c073 100644
--- a/index.js
+++ b/index.js
@@ -403,7 +403,16 @@ exports.hook_deny = function (next, connection, params) {
         if (headerFrom) {
             logdata._header_from = headerFrom.address;
             logdata._header_from_name = headerFrom.provided && headerFrom.provided.name;
-            logdata._header_from_value = txn.header.get_all('From').join('; ');
+
+            let fromHeadersValue = txn.header.get_all('From').join('; ');
+
+            try {
+                fromHeadersValue = libmime.decodeWords(fromHeadersValue);
+            } catch {
+                // return as is
+            }
+
+            logdata._header_from_value = fromHeadersValue;
         }
 
         const err = params && params[1];