2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
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
10 #ifndef OPENSSL_COMP_H
11 # define OPENSSL_COMP_H
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
16 # define HEADER_COMP_H
19 # include <openssl/opensslconf.h>
21 # ifndef OPENSSL_NO_COMP
22 # include <openssl/crypto.h>
23 # include <openssl/comperr.h>
30 COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);
31 const COMP_METHOD *COMP_CTX_get_method(const COMP_CTX *ctx);
32 int COMP_CTX_get_type(const COMP_CTX* comp);
33 int COMP_get_type(const COMP_METHOD *meth);
34 const char *COMP_get_name(const COMP_METHOD *meth);
35 void COMP_CTX_free(COMP_CTX *ctx);
37 int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
38 unsigned char *in, int ilen);
39 int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
40 unsigned char *in, int ilen);
42 COMP_METHOD *COMP_zlib(void);
44 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
45 # define COMP_zlib_cleanup() while(0) continue
50 const BIO_METHOD *BIO_f_zlib(void);