From 1219da203e46b757ca1fb824b264d3ab726df056 Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Tue, 10 Sep 2019 18:17:13 +0200
Subject: util.x509: Only collect commonNames that pass idna

Weeds out "Example Certificate" and the like, which are uninteresting
for this function.
---
 util/x509.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'util/x509.lua')

diff --git a/util/x509.lua b/util/x509.lua
index c4001ecb..82f8285d 100644
--- a/util/x509.lua
+++ b/util/x509.lua
@@ -238,7 +238,7 @@ local function get_identities(cert) --> set of names
 		local dn = subject[i];
 		if dn.oid == oid_commonname then
 			local name = nameprep(dn.value);
-			if name then
+			if name and idna_to_ascii(name) then
 				names[name] = true;
 			end
 		end
-- 
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