]>
Commit | Line | Data |
---|---|---|
62867571 | 1 | /* |
c4d3c19b | 2 | * Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved. |
9a555706 | 3 | * |
62867571 RS |
4 | * Licensed under the OpenSSL license (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 | |
9a555706 RS |
8 | */ |
9 | ||
dfeab068 RE |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
ec577822 BM |
13 | #include <openssl/objects.h> |
14 | #include <openssl/comp.h> | |
fe1128dc | 15 | #include <openssl/err.h> |
9a555706 | 16 | #include "comp_lcl.h" |
dfeab068 | 17 | |
6b691a5c | 18 | COMP_CTX *COMP_CTX_new(COMP_METHOD *meth) |
0f113f3e MC |
19 | { |
20 | COMP_CTX *ret; | |
dfeab068 | 21 | |
fe1128dc RS |
22 | if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) { |
23 | COMPerr(COMP_F_COMP_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
26a7d938 | 24 | return NULL; |
fe1128dc | 25 | } |
0f113f3e MC |
26 | ret->meth = meth; |
27 | if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { | |
28 | OPENSSL_free(ret); | |
29 | ret = NULL; | |
30 | } | |
26a7d938 | 31 | return ret; |
0f113f3e | 32 | } |
dfeab068 | 33 | |
9a555706 RS |
34 | const COMP_METHOD *COMP_CTX_get_method(const COMP_CTX *ctx) |
35 | { | |
36 | return ctx->meth; | |
37 | } | |
38 | ||
39 | int COMP_get_type(const COMP_METHOD *meth) | |
40 | { | |
41 | return meth->type; | |
42 | } | |
43 | ||
44 | const char *COMP_get_name(const COMP_METHOD *meth) | |
45 | { | |
46 | return meth->name; | |
47 | } | |
48 | ||
6b691a5c | 49 | void COMP_CTX_free(COMP_CTX *ctx) |
0f113f3e | 50 | { |
e6e9170d RS |
51 | if (ctx == NULL) |
52 | return; | |
0f113f3e MC |
53 | if (ctx->meth->finish != NULL) |
54 | ctx->meth->finish(ctx); | |
dfeab068 | 55 | |
0f113f3e MC |
56 | OPENSSL_free(ctx); |
57 | } | |
dfeab068 | 58 | |
6b691a5c | 59 | int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, |
0f113f3e MC |
60 | unsigned char *in, int ilen) |
61 | { | |
62 | int ret; | |
63 | if (ctx->meth->compress == NULL) { | |
26a7d938 | 64 | return -1; |
0f113f3e MC |
65 | } |
66 | ret = ctx->meth->compress(ctx, out, olen, in, ilen); | |
67 | if (ret > 0) { | |
68 | ctx->compress_in += ilen; | |
69 | ctx->compress_out += ret; | |
70 | } | |
26a7d938 | 71 | return ret; |
0f113f3e | 72 | } |
dfeab068 | 73 | |
6b691a5c | 74 | int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, |
0f113f3e MC |
75 | unsigned char *in, int ilen) |
76 | { | |
77 | int ret; | |
dfeab068 | 78 | |
0f113f3e | 79 | if (ctx->meth->expand == NULL) { |
26a7d938 | 80 | return -1; |
0f113f3e MC |
81 | } |
82 | ret = ctx->meth->expand(ctx, out, olen, in, ilen); | |
83 | if (ret > 0) { | |
84 | ctx->expand_in += ilen; | |
85 | ctx->expand_out += ret; | |
86 | } | |
26a7d938 | 87 | return ret; |
0f113f3e | 88 | } |
9a555706 RS |
89 | |
90 | int COMP_CTX_get_type(const COMP_CTX* comp) | |
91 | { | |
92 | return comp->meth ? comp->meth->type : NID_undef; | |
93 | } |