Add posix_time.h from BoringSSL

This is prepares to expose some internal API as OPENSSL_tm_to_posix() and
OPENSSL_posix_to_tm(). They will be used in libtls and ocspcheck(8) to get
rid of the portability nightmare that is timegm().

Also fix the location of OPENSSL_gmtime() and OPENSSL_timegm() (this API
is not yet exposed). The former is from OpenSSL and surprisingly lives in
crypto.h, not asn1.h, and the latter is BoringSSL API and lives in the new
posix_time.h.

Initial diff from beck, this pulls in further upstream work after review
feedback.

ok jsing

1 files changed, 32 insertions, 0 deletions

diff --git a/src/lib/libcrypto/hidden/openssl/posix_time.h b/src/lib/libcrypto/hidden/openssl/posix_time.h
new file mode 100644
index 0000000000..306d43eae5
--- /dev/null
+++ b/src/lib/libcrypto/hidden/openssl/posix_time.h
@@ -0,0 +1,32 @@
+/* $OpenBSD: posix_time.h,v 1.1 2024/02/18 16:28:38 tb Exp $ */
+/*
+ * Copyright (c) 2024 Bob Beck <beck@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LIBCRYPTO_POSIX_TIME_H
+#define _LIBCRYPTO_POSIX_TIME_H
+
+#ifndef _MSC_VER
+#include_next <openssl/posix_time.h>
+#else
+#include "../include/openssl/posix_time.h"
+#endif
+#include "crypto_namespace.h"
+
+LCRYPTO_USED(OPENSSL_posix_to_tm);
+LCRYPTO_USED(OPENSSL_tm_to_posix);
+LCRYPTO_USED(OPENSSL_timegm);
+
+#endif /* _LIBCRYPTO_POSIX_TIME_H */