From 4caae044218601c3abf448776a6c0909f9135bd8 Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Tue, 10 Sep 2019 18:16:11 +0200
Subject: util.x509: Nameprep commonName once

---
 util/x509.lua | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'util')

diff --git a/util/x509.lua b/util/x509.lua
index 1cdf07dc..c4001ecb 100644
--- a/util/x509.lua
+++ b/util/x509.lua
@@ -236,8 +236,11 @@ local function get_identities(cert) --> set of names
 	local subject = cert:subject();
 	for i = 1, #subject do
 		local dn = subject[i];
-		if dn.oid == oid_commonname and nameprep(dn.value) then
-			names[dn.value] = true;
+		if dn.oid == oid_commonname then
+			local name = nameprep(dn.value);
+			if name then
+				names[name] = true;
+			end
 		end
 	end
 	return names;
-- 
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