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authorMartin Schanzenbach <schanzen@gnunet.org>2023-10-18 13:37:38 +0200
committerMartin Schanzenbach <schanzen@gnunet.org>2023-10-18 13:37:38 +0200
commit9ef4abad615bea12d13be542b8ae5fbeb2dfee32 (patch)
tree8875a687e004d331c9ea6a1d511a328c72b88113 /src/util/compress.c
parente95236b3ed78cd597c15f34b89385295702b627f (diff)
downloadgnunet-9ef4abad615bea12d13be542b8ae5fbeb2dfee32.tar.gz
gnunet-9ef4abad615bea12d13be542b8ae5fbeb2dfee32.zip
NEWS: Refactoring components under src/ into lib/, plugin/, cli/ and service/
This also includes a necessary API refactoring of crypto from IDENTITY to UTIL.
Diffstat (limited to 'src/util/compress.c')
-rw-r--r--src/util/compress.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/src/util/compress.c b/src/util/compress.c
deleted file mode 100644
index 73fa25bd9..000000000
--- a/src/util/compress.c
+++ /dev/null
@@ -1,91 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2022 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
21/**
22 * @file util/compress.c
23 * @brief Simple (de)compression logic
24 * @author Philipp Toelke
25 * @author Martin Schanzenbach
26 */
27
28#include "platform.h"
29#include "gnunet_util_lib.h"
30#include <zlib.h>
31
32int
33GNUNET_try_compression (const char *data,
34 size_t old_size,
35 char **result,
36 size_t *new_size)
37{
38 char *tmp;
39 uLongf dlen;
40
41 *result = NULL;
42 *new_size = 0;
43#ifdef compressBound
44 dlen = compressBound (old_size);
45#else
46 dlen = old_size + (old_size / 100) + 20;
47 /* documentation says 100.1% oldSize + 12 bytes, but we
48 * should be able to overshoot by more to be safe */
49#endif
50 tmp = GNUNET_malloc (dlen);
51 if (Z_OK ==
52 compress2 ((Bytef *) tmp,
53 &dlen,
54 (const Bytef *) data,
55 old_size, 9))
56 {
57 if (dlen < old_size)
58 {
59 *result = tmp;
60 *new_size = dlen;
61 return GNUNET_YES;
62 }
63 }
64 GNUNET_free (tmp);
65 return GNUNET_NO;
66}
67
68
69char *
70GNUNET_decompress (const char *input,
71 size_t input_size,
72 size_t output_size)
73{
74 char *output;
75 uLongf olen;
76
77 olen = output_size;
78 output = GNUNET_malloc (olen);
79 if (Z_OK ==
80 uncompress ((Bytef *) output,
81 &olen,
82 (const Bytef *) input,
83 input_size))
84 return output;
85 GNUNET_free (output);
86 return NULL;
87}
88
89
90
91/* end of compress.c */