| 1 | /*
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| 2 | * Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #ifndef OSSL_INTERNAL_BIO_H
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| 11 | # define OSSL_INTERNAL_BIO_H
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| 12 | # pragma once
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| 13 |
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| 14 | # include <openssl/core.h>
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| 15 | # include <openssl/bio.h>
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| 16 |
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| 17 | struct bio_method_st {
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| 18 | int type;
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| 19 | char *name;
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| 20 | int (*bwrite) (BIO *, const char *, size_t, size_t *);
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| 21 | int (*bwrite_old) (BIO *, const char *, int);
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| 22 | int (*bread) (BIO *, char *, size_t, size_t *);
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| 23 | int (*bread_old) (BIO *, char *, int);
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| 24 | int (*bputs) (BIO *, const char *);
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| 25 | int (*bgets) (BIO *, char *, int);
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| 26 | long (*ctrl) (BIO *, int, long, void *);
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| 27 | int (*create) (BIO *);
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| 28 | int (*destroy) (BIO *);
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| 29 | long (*callback_ctrl) (BIO *, int, BIO_info_cb *);
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| 30 | };
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| 31 |
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| 32 | void bio_free_ex_data(BIO *bio);
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| 33 | void bio_cleanup(void);
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| 34 |
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| 35 |
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| 36 | /* Old style to new style BIO_METHOD conversion functions */
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| 37 | int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written);
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| 38 | int bread_conv(BIO *bio, char *data, size_t datal, size_t *read);
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| 39 |
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| 40 | /* Changes to these internal BIOs must also update include/openssl/bio.h */
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| 41 | # define BIO_CTRL_SET_KTLS 72
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| 42 | # define BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG 74
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| 43 | # define BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG 75
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| 44 |
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| 45 | /*
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| 46 | * This is used with socket BIOs:
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| 47 | * BIO_FLAGS_KTLS_TX means we are using ktls with this BIO for sending.
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| 48 | * BIO_FLAGS_KTLS_TX_CTRL_MSG means we are about to send a ctrl message next.
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| 49 | * BIO_FLAGS_KTLS_RX means we are using ktls with this BIO for receiving.
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| 50 | */
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| 51 | # define BIO_FLAGS_KTLS_TX_CTRL_MSG 0x1000
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| 52 | # define BIO_FLAGS_KTLS_RX 0x2000
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| 53 | # define BIO_FLAGS_KTLS_TX 0x4000
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| 54 |
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| 55 | /* KTLS related controls and flags */
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| 56 | # define BIO_set_ktls_flag(b, is_tx) \
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| 57 | BIO_set_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
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| 58 | # define BIO_should_ktls_flag(b, is_tx) \
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| 59 | BIO_test_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
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| 60 | # define BIO_set_ktls_ctrl_msg_flag(b) \
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| 61 | BIO_set_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
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| 62 | # define BIO_should_ktls_ctrl_msg_flag(b) \
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| 63 | BIO_test_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
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| 64 | # define BIO_clear_ktls_ctrl_msg_flag(b) \
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| 65 | BIO_clear_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
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| 66 |
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| 67 | # define BIO_set_ktls(b, keyblob, is_tx) \
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| 68 | BIO_ctrl(b, BIO_CTRL_SET_KTLS, is_tx, keyblob)
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| 69 | # define BIO_set_ktls_ctrl_msg(b, record_type) \
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| 70 | BIO_ctrl(b, BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG, record_type, NULL)
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| 71 | # define BIO_clear_ktls_ctrl_msg(b) \
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| 72 | BIO_ctrl(b, BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG, 0, NULL)
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| 73 |
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| 74 | /* Functions to allow the core to offer the CORE_BIO type to providers */
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| 75 | OSSL_CORE_BIO *ossl_core_bio_new_from_bio(BIO *bio);
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| 76 | OSSL_CORE_BIO *ossl_core_bio_new_file(const char *filename, const char *mode);
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| 77 | OSSL_CORE_BIO *ossl_core_bio_new_mem_buf(const void *buf, int len);
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| 78 | int ossl_core_bio_read_ex(OSSL_CORE_BIO *cb, void *data, size_t dlen,
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| 79 | size_t *readbytes);
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| 80 | int ossl_core_bio_write_ex(OSSL_CORE_BIO *cb, const void *data, size_t dlen,
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| 81 | size_t *written);
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| 82 | int ossl_core_bio_gets(OSSL_CORE_BIO *cb, char *buf, int size);
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| 83 | int ossl_core_bio_puts(OSSL_CORE_BIO *cb, const char *buf);
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| 84 | long ossl_core_bio_ctrl(OSSL_CORE_BIO *cb, int cmd, long larg, void *parg);
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| 85 | int ossl_core_bio_up_ref(OSSL_CORE_BIO *cb);
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| 86 | int ossl_core_bio_free(OSSL_CORE_BIO *cb);
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| 87 | int ossl_core_bio_vprintf(OSSL_CORE_BIO *cb, const char *format, va_list args);
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| 88 |
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| 89 | int ossl_bio_init_core(OSSL_LIB_CTX *libctx, const OSSL_DISPATCH *fns);
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| 90 |
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| 91 | #endif
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