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/*
* Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_INTERNAL_BIO_H
# define OSSL_INTERNAL_BIO_H
# pragma once
# include <openssl/core.h>
# include <openssl/bio.h>
struct bio_method_st {
int type;
char *name;
int (*bwrite) (BIO *, const char *, size_t, size_t *);
int (*bwrite_old) (BIO *, const char *, int);
int (*bread) (BIO *, char *, size_t, size_t *);
int (*bread_old) (BIO *, char *, int);
int (*bputs) (BIO *, const char *);
int (*bgets) (BIO *, char *, int);
long (*ctrl) (BIO *, int, long, void *);
int (*create) (BIO *);
int (*destroy) (BIO *);
long (*callback_ctrl) (BIO *, int, BIO_info_cb *);
};
void bio_free_ex_data(BIO *bio);
void bio_cleanup(void);
/* Old style to new style BIO_METHOD conversion functions */
int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written);
int bread_conv(BIO *bio, char *data, size_t datal, size_t *read);
/* Changes to these internal BIOs must also update include/openssl/bio.h */
# define BIO_CTRL_SET_KTLS 72
# define BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG 74
# define BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG 75
/*
* This is used with socket BIOs:
* BIO_FLAGS_KTLS_TX means we are using ktls with this BIO for sending.
* BIO_FLAGS_KTLS_TX_CTRL_MSG means we are about to send a ctrl message next.
* BIO_FLAGS_KTLS_RX means we are using ktls with this BIO for receiving.
*/
# define BIO_FLAGS_KTLS_TX_CTRL_MSG 0x1000
# define BIO_FLAGS_KTLS_RX 0x2000
# define BIO_FLAGS_KTLS_TX 0x4000
/* KTLS related controls and flags */
# define BIO_set_ktls_flag(b, is_tx) \
BIO_set_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
# define BIO_should_ktls_flag(b, is_tx) \
BIO_test_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
# define BIO_set_ktls_ctrl_msg_flag(b) \
BIO_set_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_should_ktls_ctrl_msg_flag(b) \
BIO_test_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_clear_ktls_ctrl_msg_flag(b) \
BIO_clear_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_set_ktls(b, keyblob, is_tx) \
BIO_ctrl(b, BIO_CTRL_SET_KTLS, is_tx, keyblob)
# define BIO_set_ktls_ctrl_msg(b, record_type) \
BIO_ctrl(b, BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG, record_type, NULL)
# define BIO_clear_ktls_ctrl_msg(b) \
BIO_ctrl(b, BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG, 0, NULL)
/* Functions to allow the core to offer the CORE_BIO type to providers */
OSSL_CORE_BIO *ossl_core_bio_new_from_bio(BIO *bio);
OSSL_CORE_BIO *ossl_core_bio_new_file(const char *filename, const char *mode);
OSSL_CORE_BIO *ossl_core_bio_new_mem_buf(const void *buf, int len);
int ossl_core_bio_read_ex(OSSL_CORE_BIO *cb, void *data, size_t dlen,
size_t *readbytes);
int ossl_core_bio_write_ex(OSSL_CORE_BIO *cb, const void *data, size_t dlen,
size_t *written);
int ossl_core_bio_gets(OSSL_CORE_BIO *cb, char *buf, int size);
int ossl_core_bio_puts(OSSL_CORE_BIO *cb, const char *buf);
long ossl_core_bio_ctrl(OSSL_CORE_BIO *cb, int cmd, long larg, void *parg);
int ossl_core_bio_up_ref(OSSL_CORE_BIO *cb);
int ossl_core_bio_free(OSSL_CORE_BIO *cb);
int ossl_core_bio_vprintf(OSSL_CORE_BIO *cb, const char *format, va_list args);
int ossl_bio_init_core(OSSL_LIB_CTX *libctx, const OSSL_DISPATCH *fns);
#endif
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