From: Anton Yuzhaninov <citrin+git@citrin.ru>
Date: Fri, 30 Oct 2020 17:44:22 +0000 (+0000)
Subject: [Minor] forged_recipients: fix for uppercase RFC5321.MailFrom domain
X-Git-Tag: 2.7~181^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F3537%2Fhead;p=thirdparty%2Frspamd.git

[Minor] forged_recipients: fix for uppercase RFC5321.MailFrom domain

If RFC5321.MailFrom has an address with uppercase domain following error
happens:
/usr/share/rspamd/plugins/forged_recipients.lua:129: attempt to index a nil value; trace: [1]:{/usr/share/rspamd/plugins/forged_recipients.lua:129 - <unknown> [Lua]};

Lowercase a domain.
---

diff --git a/src/plugins/lua/forged_recipients.lua b/src/plugins/lua/forged_recipients.lua
index 4f7942f798..de5ceb87d3 100644
--- a/src/plugins/lua/forged_recipients.lua
+++ b/src/plugins/lua/forged_recipients.lua
@@ -126,7 +126,7 @@ local function check_forged_headers(task)
   end
   for _,smtp_rcpt in ipairs(smtp_rcpts) do
     if not smtp_rcpt.matched then
-      if not smtp_rcpt_domain_map[smtp_rcpt.domain]._seen_mime_domain then
+      if not smtp_rcpt_domain_map[smtp_rcpt.domain:lower()]._seen_mime_domain then
         seen_smtp_unmatched = true
         table.insert(opts, 's:' .. smtp_rcpt.addr)
       end