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diff --git a/src/lib/libcrypto/comp/comp_lib.c b/src/lib/libcrypto/comp/comp_lib.c
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1/* $OpenBSD: comp_lib.c,v 1.12 2023/07/08 08:26:26 beck Exp $ */
2/*
3 * ---------------------------------------------------------------------------
4 * Patches to this file were contributed by
5 * Ben Laurie <ben@openssl.org> and Ulf Moeller <ulf@openssl.org>.
6 * ---------------------------------------------------------------------------
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 *
53 * ---------------------------------------------------------------------------
54 * Parts of this file are derived from SSLeay code
55 * which is covered by the following Copyright and license:
56 * ---------------------------------------------------------------------------
57 * Copyright (c) 1998 Eric Young <eay@cryptsoft.com>
58 * All rights reserved.
59 *
60 * This package is an SSL implementation written
61 * by Eric Young <eay@cryptsoft.com>.
62 * The implementation was written so as to conform with Netscapes SSL.
63 *
64 * This library is free for commercial and non-commercial use as long as
65 * the following conditions are aheared to. The following conditions
66 * apply to all code found in this distribution, be it the RC4, RSA,
67 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
68 * included with this distribution is covered by the same copyright terms
69 * except that the holder is Tim Hudson <tjh@cryptsoft.com>.
70 *
71 * Copyright remains Eric Young's, and as such any Copyright notices in
72 * the code are not to be removed.
73 * If this package is used in a product, Eric Young should be given
74 * attribution as the author of the parts of the library used.
75 * This can be in the form of a textual message at program startup or
76 * in documentation (online or textual) provided with the package.
77 *
78 * Redistribution and use in source and binary forms, with or without
79 * modification, are permitted provided that the following conditions
80 * are met:
81 * 1. Redistributions of source code must retain the copyright
82 * notice, this list of conditions and the following disclaimer.
83 * 2. Redistributions in binary form must reproduce the above copyright
84 * notice, this list of conditions and the following disclaimer in the
85 * documentation and/or other materials provided with the distribution.
86 * 3. All advertising materials mentioning features or use of this software
87 * must display the following acknowledgement:
88 * "This product includes cryptographic software written by
89 * Eric Young <eay@cryptsoft.com>"
90 * The word 'cryptographic' can be left out if the rouines from the
91 * library being used are not cryptographic related :-).
92 * 4. If you include any Windows specific code (or a derivative thereof)
93 * from the apps directory (application code) you must include an
94 * acknowledgement: "This product includes software written
95 * by Tim Hudson <tjh@cryptsoft.com>"
96 *
97 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
98 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
99 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
100 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
101 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
102 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
103 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
104 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
105 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
106 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
107 * SUCH DAMAGE.
108 *
109 * The licence and distribution terms for any publically available version
110 * or derivative of this code cannot be changed. i.e. this code cannot
111 * simply be copied and put under another distribution licence
112 * [including the GNU Public Licence.]
113 */
114
115#include <stdio.h>
116#include <stdlib.h>
117#include <string.h>
118
119#include <openssl/objects.h>
120#include <openssl/comp.h>
121
122#include "comp_local.h"
123
124COMP_CTX *
125COMP_CTX_new(COMP_METHOD *meth)
126{
127 COMP_CTX *ret;
128
129 if ((ret = calloc(1, sizeof(COMP_CTX))) == NULL) {
130 return (NULL);
131 }
132 ret->meth = meth;
133 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
134 free(ret);
135 ret = NULL;
136 }
137 return (ret);
138}
139LCRYPTO_ALIAS(COMP_CTX_new);
140
141void
142COMP_CTX_free(COMP_CTX *ctx)
143{
144 if (ctx == NULL)
145 return;
146
147 if (ctx->meth->finish != NULL)
148 ctx->meth->finish(ctx);
149
150 free(ctx);
151}
152LCRYPTO_ALIAS(COMP_CTX_free);
153
154int
155COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
156 unsigned char *in, int ilen)
157{
158 int ret;
159
160 if (ctx->meth->compress == NULL) {
161 return (-1);
162 }
163 ret = ctx->meth->compress(ctx, out, olen, in, ilen);
164 if (ret > 0) {
165 ctx->compress_in += ilen;
166 ctx->compress_out += ret;
167 }
168 return (ret);
169}
170LCRYPTO_ALIAS(COMP_compress_block);
171
172int
173COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
174 unsigned char *in, int ilen)
175{
176 int ret;
177
178 if (ctx->meth->expand == NULL) {
179 return (-1);
180 }
181 ret = ctx->meth->expand(ctx, out, olen, in, ilen);
182 if (ret > 0) {
183 ctx->expand_in += ilen;
184 ctx->expand_out += ret;
185 }
186 return (ret);
187}
188LCRYPTO_ALIAS(COMP_expand_block);