Add standard headers, C++ support to tls.h.

This makes using libtls easier to include by including dependent headers,
making something like this work as expected:

#include <iostream>
#include <tls.h>

int main()
{
   std::cout << "tls_init: " << tls_init() << "\n";
}

This also makes building a standalone libtls-portable simpler.

ok doug@, jsing@

diff --git a/lib/libtls/tls.h b/lib/libtls/tls.h
index e9971ad..cb02ee8 100644 (file)
--- a/lib/libtls/tls.h
+++ b/lib/libtls/tls.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls.h,v 1.12 2015/03/31 14:03:38 jsing Exp $ */
+/* $OpenBSD: tls.h,v 1.13 2015/06/19 06:20:11 bcook Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -18,6 +18,13 @@
 #ifndef HEADER_TLS_H
 #define HEADER_TLS_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+
 #define TLS_API        20141031
 
 #define TLS_PROTOCOL_TLSv1_0   (1 << 1)
@@ -88,4 +95,8 @@ int tls_close(struct tls *_ctx);
 
 uint8_t *tls_load_file(const char *_file, size_t *_len, char *_password);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* HEADER_TLS_H */