Elijah P / CyaSSL

CyaSSL changed for NucleoF401RE board: implemented random and time functions for build. (Has trouble with wildcard domains like *.google.com, *.yahoo.com)

Fork of CyaSSL by wolf SSL

ctaocrypt/src/compress.c@4:e505054279ed, 2015-01-14 (annotated)

Committer:
Vanger
Date:
Wed Jan 14 22:07:14 2015 +0000
Revision:
4:e505054279ed
Parent:
0:1239e9b70ca2 
Implemented some platform specific functions in the Cyassl library code: time functions, seed random functions, and also changed the settings.h file to define settings specific to the platform being used

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 0:1239e9b70ca2 1 /* compress.c
wolfSSL 0:1239e9b70ca2 2 *
wolfSSL 0:1239e9b70ca2 3 * Copyright (C) 2006-2014 wolfSSL Inc.
wolfSSL 0:1239e9b70ca2 4 *
wolfSSL 0:1239e9b70ca2 5 * This file is part of CyaSSL.
wolfSSL 0:1239e9b70ca2 6 *
wolfSSL 0:1239e9b70ca2 7 * CyaSSL is free software; you can redistribute it and/or modify
wolfSSL 0:1239e9b70ca2 8 * it under the terms of the GNU General Public License as published by
wolfSSL 0:1239e9b70ca2 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 0:1239e9b70ca2 10 * (at your option) any later version.
wolfSSL 0:1239e9b70ca2 11 *
wolfSSL 0:1239e9b70ca2 12 * CyaSSL is distributed in the hope that it will be useful,
wolfSSL 0:1239e9b70ca2 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 0:1239e9b70ca2 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 0:1239e9b70ca2 15 * GNU General Public License for more details.
wolfSSL 0:1239e9b70ca2 16 *
wolfSSL 0:1239e9b70ca2 17 * You should have received a copy of the GNU General Public License
wolfSSL 0:1239e9b70ca2 18 * along with this program; if not, write to the Free Software
wolfSSL 0:1239e9b70ca2 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
wolfSSL 0:1239e9b70ca2 20 */
wolfSSL 0:1239e9b70ca2 21
wolfSSL 0:1239e9b70ca2 22
wolfSSL 0:1239e9b70ca2 23 #ifdef HAVE_CONFIG_H
wolfSSL 0:1239e9b70ca2 24 #include <config.h>
wolfSSL 0:1239e9b70ca2 25 #endif
wolfSSL 0:1239e9b70ca2 26
wolfSSL 0:1239e9b70ca2 27 #include <cyassl/ctaocrypt/settings.h>
wolfSSL 0:1239e9b70ca2 28
wolfSSL 0:1239e9b70ca2 29 #ifdef HAVE_LIBZ
wolfSSL 0:1239e9b70ca2 30
wolfSSL 0:1239e9b70ca2 31
wolfSSL 0:1239e9b70ca2 32 #include <cyassl/ctaocrypt/compress.h>
wolfSSL 0:1239e9b70ca2 33 #include <cyassl/ctaocrypt/error-crypt.h>
wolfSSL 0:1239e9b70ca2 34 #include <cyassl/ctaocrypt/logging.h>
wolfSSL 0:1239e9b70ca2 35 #ifdef NO_INLINE
wolfSSL 0:1239e9b70ca2 36 #include <cyassl/ctaocrypt/misc.h>
wolfSSL 0:1239e9b70ca2 37 #else
wolfSSL 0:1239e9b70ca2 38 #include <ctaocrypt/src/misc.c>
wolfSSL 0:1239e9b70ca2 39 #endif
wolfSSL 0:1239e9b70ca2 40
wolfSSL 0:1239e9b70ca2 41 #include <zlib.h>
wolfSSL 0:1239e9b70ca2 42
wolfSSL 0:1239e9b70ca2 43
wolfSSL 0:1239e9b70ca2 44 /* alloc user allocs to work with zlib */
wolfSSL 0:1239e9b70ca2 45 static void* myAlloc(void* opaque, unsigned int item, unsigned int size)
wolfSSL 0:1239e9b70ca2 46 {
wolfSSL 0:1239e9b70ca2 47 (void)opaque;
wolfSSL 0:1239e9b70ca2 48 return XMALLOC(item * size, opaque, DYNAMIC_TYPE_LIBZ);
wolfSSL 0:1239e9b70ca2 49 }
wolfSSL 0:1239e9b70ca2 50
wolfSSL 0:1239e9b70ca2 51
wolfSSL 0:1239e9b70ca2 52 static void myFree(void* opaque, void* memory)
wolfSSL 0:1239e9b70ca2 53 {
wolfSSL 0:1239e9b70ca2 54 (void)opaque;
wolfSSL 0:1239e9b70ca2 55 XFREE(memory, opaque, DYNAMIC_TYPE_LIBZ);
wolfSSL 0:1239e9b70ca2 56 }
wolfSSL 0:1239e9b70ca2 57
wolfSSL 0:1239e9b70ca2 58
wolfSSL 0:1239e9b70ca2 59 #ifdef HAVE_MCAPI
wolfSSL 0:1239e9b70ca2 60 #define DEFLATE_DEFAULT_WINDOWBITS 11
wolfSSL 0:1239e9b70ca2 61 #define DEFLATE_DEFAULT_MEMLEVEL 1
wolfSSL 0:1239e9b70ca2 62 #else
wolfSSL 0:1239e9b70ca2 63 #define DEFLATE_DEFAULT_WINDOWBITS 15
wolfSSL 0:1239e9b70ca2 64 #define DEFLATE_DEFAULT_MEMLEVEL 8
wolfSSL 0:1239e9b70ca2 65 #endif
wolfSSL 0:1239e9b70ca2 66
wolfSSL 0:1239e9b70ca2 67
wolfSSL 0:1239e9b70ca2 68 int Compress(byte* out, word32 outSz, const byte* in, word32 inSz, word32 flags)
wolfSSL 0:1239e9b70ca2 69 /*
wolfSSL 0:1239e9b70ca2 70 * out - pointer to destination buffer
wolfSSL 0:1239e9b70ca2 71 * outSz - size of destination buffer
wolfSSL 0:1239e9b70ca2 72 * in - pointer to source buffer to compress
wolfSSL 0:1239e9b70ca2 73 * inSz - size of source to compress
wolfSSL 0:1239e9b70ca2 74 * flags - flags to control how compress operates
wolfSSL 0:1239e9b70ca2 75 *
wolfSSL 0:1239e9b70ca2 76 * return:
wolfSSL 0:1239e9b70ca2 77 * negative - error code
wolfSSL 0:1239e9b70ca2 78 * positive - bytes stored in out buffer
wolfSSL 0:1239e9b70ca2 79 *
wolfSSL 0:1239e9b70ca2 80 * Note, the output buffer still needs to be larger than the input buffer.
wolfSSL 0:1239e9b70ca2 81 * The right chunk of data won't compress at all, and the lookup table will
wolfSSL 0:1239e9b70ca2 82 * add to the size of the output. The libz code says the compressed
wolfSSL 0:1239e9b70ca2 83 * buffer should be srcSz + 0.1% + 12.
wolfSSL 0:1239e9b70ca2 84 */
wolfSSL 0:1239e9b70ca2 85 {
wolfSSL 0:1239e9b70ca2 86 z_stream stream;
wolfSSL 0:1239e9b70ca2 87 int result = 0;
wolfSSL 0:1239e9b70ca2 88
wolfSSL 0:1239e9b70ca2 89 stream.next_in = (Bytef*)in;
wolfSSL 0:1239e9b70ca2 90 stream.avail_in = (uInt)inSz;
wolfSSL 0:1239e9b70ca2 91 #ifdef MAXSEG_64K
wolfSSL 0:1239e9b70ca2 92 /* Check for source > 64K on 16-bit machine: */
wolfSSL 0:1239e9b70ca2 93 if ((uLong)stream.avail_in != inSz) return COMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 94 #endif
wolfSSL 0:1239e9b70ca2 95 stream.next_out = out;
wolfSSL 0:1239e9b70ca2 96 stream.avail_out = (uInt)outSz;
wolfSSL 0:1239e9b70ca2 97 if ((uLong)stream.avail_out != outSz) return COMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 98
wolfSSL 0:1239e9b70ca2 99 stream.zalloc = (alloc_func)myAlloc;
wolfSSL 0:1239e9b70ca2 100 stream.zfree = (free_func)myFree;
wolfSSL 0:1239e9b70ca2 101 stream.opaque = (voidpf)0;
wolfSSL 0:1239e9b70ca2 102
wolfSSL 0:1239e9b70ca2 103 if (deflateInit2(&stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
wolfSSL 0:1239e9b70ca2 104 DEFLATE_DEFAULT_WINDOWBITS, DEFLATE_DEFAULT_MEMLEVEL,
wolfSSL 0:1239e9b70ca2 105 flags ? Z_FIXED : Z_DEFAULT_STRATEGY) != Z_OK)
wolfSSL 0:1239e9b70ca2 106 return COMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 107
wolfSSL 0:1239e9b70ca2 108 if (deflate(&stream, Z_FINISH) != Z_STREAM_END) {
wolfSSL 0:1239e9b70ca2 109 deflateEnd(&stream);
wolfSSL 0:1239e9b70ca2 110 return COMPRESS_E;
wolfSSL 0:1239e9b70ca2 111 }
wolfSSL 0:1239e9b70ca2 112
wolfSSL 0:1239e9b70ca2 113 result = (int)stream.total_out;
wolfSSL 0:1239e9b70ca2 114
wolfSSL 0:1239e9b70ca2 115 if (deflateEnd(&stream) != Z_OK)
wolfSSL 0:1239e9b70ca2 116 result = COMPRESS_E;
wolfSSL 0:1239e9b70ca2 117
wolfSSL 0:1239e9b70ca2 118 return result;
wolfSSL 0:1239e9b70ca2 119 }
wolfSSL 0:1239e9b70ca2 120
wolfSSL 0:1239e9b70ca2 121
wolfSSL 0:1239e9b70ca2 122 int DeCompress(byte* out, word32 outSz, const byte* in, word32 inSz)
wolfSSL 0:1239e9b70ca2 123 /*
wolfSSL 0:1239e9b70ca2 124 * out - pointer to destination buffer
wolfSSL 0:1239e9b70ca2 125 * outSz - size of destination buffer
wolfSSL 0:1239e9b70ca2 126 * in - pointer to source buffer to compress
wolfSSL 0:1239e9b70ca2 127 * inSz - size of source to compress
wolfSSL 0:1239e9b70ca2 128 * flags - flags to control how compress operates
wolfSSL 0:1239e9b70ca2 129 *
wolfSSL 0:1239e9b70ca2 130 * return:
wolfSSL 0:1239e9b70ca2 131 * negative - error code
wolfSSL 0:1239e9b70ca2 132 * positive - bytes stored in out buffer
wolfSSL 0:1239e9b70ca2 133 */
wolfSSL 0:1239e9b70ca2 134 {
wolfSSL 0:1239e9b70ca2 135 z_stream stream;
wolfSSL 0:1239e9b70ca2 136 int result = 0;
wolfSSL 0:1239e9b70ca2 137
wolfSSL 0:1239e9b70ca2 138 stream.next_in = (Bytef*)in;
wolfSSL 0:1239e9b70ca2 139 stream.avail_in = (uInt)inSz;
wolfSSL 0:1239e9b70ca2 140 /* Check for source > 64K on 16-bit machine: */
wolfSSL 0:1239e9b70ca2 141 if ((uLong)stream.avail_in != inSz) return DECOMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 142
wolfSSL 0:1239e9b70ca2 143 stream.next_out = out;
wolfSSL 0:1239e9b70ca2 144 stream.avail_out = (uInt)outSz;
wolfSSL 0:1239e9b70ca2 145 if ((uLong)stream.avail_out != outSz) return DECOMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 146
wolfSSL 0:1239e9b70ca2 147 stream.zalloc = (alloc_func)myAlloc;
wolfSSL 0:1239e9b70ca2 148 stream.zfree = (free_func)myFree;
wolfSSL 0:1239e9b70ca2 149 stream.opaque = (voidpf)0;
wolfSSL 0:1239e9b70ca2 150
wolfSSL 0:1239e9b70ca2 151 if (inflateInit2(&stream, DEFLATE_DEFAULT_WINDOWBITS) != Z_OK)
wolfSSL 0:1239e9b70ca2 152 return DECOMPRESS_INIT_E;
wolfSSL 0:1239e9b70ca2 153
wolfSSL 0:1239e9b70ca2 154 if (inflate(&stream, Z_FINISH) != Z_STREAM_END) {
wolfSSL 0:1239e9b70ca2 155 inflateEnd(&stream);
wolfSSL 0:1239e9b70ca2 156 return DECOMPRESS_E;
wolfSSL 0:1239e9b70ca2 157 }
wolfSSL 0:1239e9b70ca2 158
wolfSSL 0:1239e9b70ca2 159 result = (int)stream.total_out;
wolfSSL 0:1239e9b70ca2 160
wolfSSL 0:1239e9b70ca2 161 if (inflateEnd(&stream) != Z_OK)
wolfSSL 0:1239e9b70ca2 162 result = DECOMPRESS_E;
wolfSSL 0:1239e9b70ca2 163
wolfSSL 0:1239e9b70ca2 164 return result;
wolfSSL 0:1239e9b70ca2 165 }
wolfSSL 0:1239e9b70ca2 166
wolfSSL 0:1239e9b70ca2 167
wolfSSL 0:1239e9b70ca2 168 #endif /* HAVE_LIBZ */
wolfSSL 0:1239e9b70ca2 169
wolfSSL 0:1239e9b70ca2 170