1 files changed, 58 insertions, 0 deletions

diff --git a/src/lib/libssl/tls13_record.h b/src/lib/libssl/tls13_record.h
new file mode 100644
index 0000000000..ca7a63f99c
--- /dev/null
+++ b/src/lib/libssl/tls13_record.h
@@ -0,0 +1,58 @@
+/* $OpenBSD: tls13_record.h,v 1.1 2019/01/19 02:53:54 jsing Exp $ */
+/*
+ * Copyright (c) 2019 Joel Sing <jsing@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 HEADER_TLS13_RECORD_H
+#define HEADER_TLS13_RECORD_H
+
+#include "bytestring.h"
+#include "tls13_internal.h"
+
+__BEGIN_HIDDEN_DECLS
+
+/*
+ * TLSv1.3 - RFC 8446 section 5.
+ *
+ * The maximum plaintext is 2^14, however for inner plaintext an additional
+ * byte is allowed for the content type. A maximum AEAD overhead of 255-bytes
+ * is permitted, along with a 5-byte header, giving a maximum size of
+ * 5 + 2^14 + 1 + 255 = 16,645-bytes.
+ */
+#define TLS13_RECORD_HEADER_LEN                 5
+#define TLS13_RECORD_MAX_AEAD_OVERHEAD          255
+#define TLS13_RECORD_MAX_PLAINTEXT_LEN          16384
+#define TLS13_RECORD_MAX_INNER_PLAINTEXT_LEN \
+        (TLS13_RECORD_MAX_PLAINTEXT_LEN + 1)
+#define TLS13_RECORD_MAX_CIPHERTEXT \
+        (TLS13_RECORD_MAX_INNER_PLAINTEXT_LEN + TLS13_RECORD_MAX_AEAD_OVERHEAD)
+#define TLS13_RECORD_MAX_LEN \
+        (TLS13_RECORD_HEADER_LEN + TLS13_RECORD_MAX_CIPHERTEXT)
+
+struct tls13_record *tls13_record_new(void);
+void tls13_record_free(struct tls13_record *_rec);
+uint8_t tls13_record_content_type(struct tls13_record *_rec);
+int tls13_record_content(struct tls13_record *_rec, CBS *_cbs);
+void tls13_record_data(struct tls13_record *_rec, CBS *_cbs);
+void tls13_record_set_data(struct tls13_record *_rec, uint8_t *_data,
+    size_t _data_len);
+ssize_t tls13_record_recv(struct tls13_record *_rec, tls13_read_cb _wire_read,
+    void *_wire_arg);
+ssize_t tls13_record_send(struct tls13_record *_rec, tls13_write_cb _wire_write,
+    void *_wire_arg);
+
+__END_HIDDEN_DECLS
+
+#endif