Convert libressl to use the BoringSSL style time conversions

This gets rid of our last uses of timegm and gmtime in the
library and things that ship with it. It includes a bit
of refactoring in ocsp_cl.c to remove some obvious ugly.

ok tb@

1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/libtls/tls_ocsp.c b/src/lib/libtls/tls_ocsp.c
index c7eb3e5986..f7d7ba9199 100644
--- a/src/lib/libtls/tls_ocsp.c
+++ b/src/lib/libtls/tls_ocsp.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: tls_ocsp.c,v 1.24 2023/11/13 10:56:19 tb Exp $ */
+/*      $OpenBSD: tls_ocsp.c,v 1.25 2024/03/24 11:30:12 beck Exp $ */
 /*
  * Copyright (c) 2015 Marko Kreen <markokr@gmail.com>
  * Copyright (c) 2016 Bob Beck <beck@openbsd.org>
@@ -25,6 +25,7 @@
 
 #include <openssl/err.h>
 #include <openssl/ocsp.h>
+#include <openssl/posix_time.h>
 #include <openssl/x509.h>
 
 #include <tls.h>
@@ -68,7 +69,7 @@ tls_ocsp_asn1_parse_time(struct tls *ctx, ASN1_GENERALIZEDTIME *gt, time_t *gt_t
                 return -1;
         if (!ASN1_TIME_to_tm(gt, &tm))
                 return -1;
-        if ((*gt_time = timegm(&tm)) == -1)
+        if (!OPENSSL_timegm(&tm, gt_time))
                 return -1;
         return 0;
 }