1/*
2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef OSSL_INTERNAL_BIO_H
11# define OSSL_INTERNAL_BIO_H
12
13#include <openssl/bio.h>
14
15struct bio_method_st {
16 int type;
17 char *name;
18 int (*bwrite) (BIO *, const char *, size_t, size_t *);
19 int (*bwrite_old) (BIO *, const char *, int);
20 int (*bread) (BIO *, char *, size_t, size_t *);
21 int (*bread_old) (BIO *, char *, int);
22 int (*bputs) (BIO *, const char *);
23 int (*bgets) (BIO *, char *, int);
24 long (*ctrl) (BIO *, int, long, void *);
25 int (*create) (BIO *);
26 int (*destroy) (BIO *);
27 long (*callback_ctrl) (BIO *, int, BIO_info_cb *);
28};
29
30void bio_free_ex_data(BIO *bio);
31void bio_cleanup(void);
32
33
34/* Old style to new style BIO_METHOD conversion functions */
35int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written);
36int bread_conv(BIO *bio, char *data, size_t datal, size_t *read);
37
38/* Changes to these internal BIOs must also update include/openssl/bio.h */
39# define BIO_CTRL_SET_KTLS 72
40# define BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG 74
41# define BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG 75
42
43/*
44 * This is used with socket BIOs:
45 * BIO_FLAGS_KTLS_TX means we are using ktls with this BIO for sending.
46 * BIO_FLAGS_KTLS_TX_CTRL_MSG means we are about to send a ctrl message next.
47 * BIO_FLAGS_KTLS_RX means we are using ktls with this BIO for receiving.
48 */
49# define BIO_FLAGS_KTLS_TX 0x800
50# define BIO_FLAGS_KTLS_TX_CTRL_MSG 0x1000
51# define BIO_FLAGS_KTLS_RX 0x2000
52
53/* KTLS related controls and flags */
54# define BIO_set_ktls_flag(b, is_tx) \
55 BIO_set_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
56# define BIO_should_ktls_flag(b, is_tx) \
57 BIO_test_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
58# define BIO_set_ktls_ctrl_msg_flag(b) \
59 BIO_set_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
60# define BIO_should_ktls_ctrl_msg_flag(b) \
61 BIO_test_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
62# define BIO_clear_ktls_ctrl_msg_flag(b) \
63 BIO_clear_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
64
65# define BIO_set_ktls(b, keyblob, is_tx) \
66 BIO_ctrl(b, BIO_CTRL_SET_KTLS, is_tx, keyblob)
67# define BIO_set_ktls_ctrl_msg(b, record_type) \
68 BIO_ctrl(b, BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG, record_type, NULL)
69# define BIO_clear_ktls_ctrl_msg(b) \
70 BIO_ctrl(b, BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG, 0, NULL)
71
72#endif
73