From 6625cc059c7e5e69a38b09d3b84c2babc7388373 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Mon, 16 Sep 2019 18:19:36 +0100
Subject: [PATCH] pem_to_der: fix binary mode length handling

---
 lib/tls/tls.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/tls/tls.c b/lib/tls/tls.c
index 013257303..b21b26f55 100644
--- a/lib/tls/tls.c
+++ b/lib/tls/tls.c
@@ -211,8 +211,8 @@ lws_tls_alloc_pem_to_der_file(struct lws_context *context, const char *filename,
 	if (filename)
 		*q = '\0';
 
-	*amount = lws_b64_decode_string((char *)p, (char *)pem,
-					(int)(long long)len);
+	*amount = lws_b64_decode_string_len((char *)p, lws_ptr_diff(q, p),
+					    (char *)pem, (int)(long long)len);
 	*buf = (uint8_t *)pem;
 
 	return 0;