IABSD.fr/src/lib/libssl/tls13_record.h

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• Author : jsing
  Date : 2019-01-21 00:24:19
  Hash : c11ed2b5
  Message : Store the record version and make it available for use. While here correct an int vs size_t mismatch. ok tb@

• lib/libssl/tls13_record.h

• /* $OpenBSD: tls13_record.h,v 1.3 2019/01/21 00:24:19 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 Record Protocol - 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_LEN \
  	(TLS13_RECORD_MAX_INNER_PLAINTEXT_LEN + TLS13_RECORD_MAX_AEAD_OVERHEAD)
  #define TLS13_RECORD_MAX_LEN \
  	(TLS13_RECORD_HEADER_LEN + TLS13_RECORD_MAX_CIPHERTEXT_LEN)
  
  /*
   * TLSv1.3 Per-Record Nonces and Sequence Numbers - RFC 8446 section 5.3.
   */
  #define TLS13_RECORD_SEQ_NUM_LEN 8
  
  struct tls13_record;
  
  struct tls13_record *tls13_record_new(void);
  void tls13_record_free(struct tls13_record *_rec);
  uint16_t tls13_record_version(struct tls13_record *_rec);
  uint8_t tls13_record_content_type(struct tls13_record *_rec);
  int tls13_record_header(struct tls13_record *_rec, CBS *_cbs);
  int tls13_record_content(struct tls13_record *_rec, CBS *_cbs);
  void tls13_record_data(struct tls13_record *_rec, CBS *_cbs);
  int 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