Rename tls13_buffer to tls_buffer.

This code will soon be used in the DTLSv1.2 and TLSv1.2 stack. Also
introduce tls_internal.h and move/rename the read/write/flush callbacks.

ok beck@ tb@

1 files changed, 56 insertions, 0 deletions

diff --git a/src/lib/libssl/tls_internal.h b/src/lib/libssl/tls_internal.h
new file mode 100644
index 0000000000..10af32efdd
--- /dev/null
+++ b/src/lib/libssl/tls_internal.h
@@ -0,0 +1,56 @@
+/* $OpenBSD: tls_internal.h,v 1.1 2021/10/23 13:12:14 jsing Exp $ */
+/*
+ * Copyright (c) 2018, 2019, 2021 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_TLS_INTERNAL_H
+#define HEADER_TLS_INTERNAL_H
+
+#include "bytestring.h"
+
+__BEGIN_HIDDEN_DECLS
+
+#define TLS_IO_SUCCESS                   1
+#define TLS_IO_EOF                       0
+#define TLS_IO_FAILURE                  -1
+#define TLS_IO_ALERT                    -2
+#define TLS_IO_WANT_POLLIN              -3
+#define TLS_IO_WANT_POLLOUT             -4
+#define TLS_IO_WANT_RETRY               -5 /* Retry the previous call immediately. */
+
+/*
+ * Callbacks.
+ */
+typedef ssize_t (*tls_read_cb)(void *_buf, size_t _buflen, void *_cb_arg);
+typedef ssize_t (*tls_write_cb)(const void *_buf, size_t _buflen,
+    void *_cb_arg);
+typedef ssize_t (*tls_flush_cb)(void *_cb_arg);
+
+/*
+ * Buffers.
+ */
+struct tls_buffer;
+
+struct tls_buffer *tls_buffer_new(size_t init_size);
+int tls_buffer_set_data(struct tls_buffer *buf, CBS *data);
+void tls_buffer_free(struct tls_buffer *buf);
+ssize_t tls_buffer_extend(struct tls_buffer *buf, size_t len,
+    tls_read_cb read_cb, void *cb_arg);
+void tls_buffer_cbs(struct tls_buffer *buf, CBS *cbs);
+int tls_buffer_finish(struct tls_buffer *buf, uint8_t **out, size_t *out_len);
+
+__END_HIDDEN_DECLS
+
+#endif