From 5318bf37436a9a8ec09950db87a879488bbc98e8 Mon Sep 17 00:00:00 2001
From: Badlop <badlop@process-one.net>
Date: Fri, 29 May 2020 12:43:28 +0200
Subject: [PATCH] If stanza is type error, allow it passing (#3290)

---
 src/mod_block_strangers.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mod_block_strangers.erl b/src/mod_block_strangers.erl
index 82b8f4bb2..92f52236d 100644
--- a/src/mod_block_strangers.erl
+++ b/src/mod_block_strangers.erl
@@ -208,9 +208,10 @@ need_check(Pkt) ->
 		  _ ->
 		      false
 	      end,
+    IsError = (error == xmpp:get_type(Pkt)),
     AllowLocalUsers = mod_block_strangers_opt:allow_local_users(LServer),
     Access = mod_block_strangers_opt:access(LServer),
-    not (IsSelf orelse IsEmpty
+    not (IsSelf orelse IsEmpty orelse IsError
 	 orelse acl:match_rule(LServer, Access, From) == allow
 	 orelse ((AllowLocalUsers orelse From#jid.luser == <<"">>)
 		 andalso ejabberd_router:is_my_host(From#jid.lserver))).