From 191ffd07082322cdfd4ca4581f39160166534405 Mon Sep 17 00:00:00 2001
From: Frank Gevaerts <frank@gevaerts.be>
Date: Fri, 26 Apr 2019 11:23:15 +0200
Subject: [PATCH] nss: allow fifos and character devices for certificates.

Currently you can do things like --cert <(cat ./cert.crt) with (at least) the
openssl backend, but that doesn't work for nss because is_file rejects fifos.

I don't actually know if this is sufficient, nss might do things internally
(like seeking back) that make this not work, so actual testing is needed.

Closes #3807
---
 lib/vtls/nss.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/vtls/nss.c b/lib/vtls/nss.c
index 65e975c91..dd563f035 100644
--- a/lib/vtls/nss.c
+++ b/lib/vtls/nss.c
@@ -378,7 +378,7 @@ static int is_file(const char *filename)
     return 0;
 
   if(stat(filename, &st) == 0)
-    if(S_ISREG(st.st_mode))
+    if(S_ISREG(st.st_mode) || S_ISFIFO(st.st_mode) || S_ISCHR(st.st_mode))
       return 1;
 
   return 0;