[164] | 1 | /* memory.c
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| 2 | *
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| 3 | * Copyright (C) 2006-2015 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL. (formerly known as CyaSSL)
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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| 20 | */
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| 21 |
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| 22 | #ifdef HAVE_CONFIG_H
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| 23 | #include <config.h>
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| 24 | #endif
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| 25 |
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| 26 | #include <wolfssl/wolfcrypt/settings.h>
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| 27 |
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| 28 | /* check old macros @wc_fips */
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| 29 | #if defined(USE_CYASSL_MEMORY) && !defined(USE_WOLFSSL_MEMORY)
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| 30 | #define USE_WOLFSSL_MEMORY
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| 31 | #endif
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| 32 | #if defined(CYASSL_MALLOC_CHECK) && !defined(WOLFSSL_MALLOC_CHECK)
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| 33 | #define WOLFSSL_MALLOC_CHECK
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| 34 | #endif
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| 35 |
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| 36 | #ifdef USE_WOLFSSL_MEMORY
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| 37 |
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| 38 | #include <wolfssl/wolfcrypt/memory.h>
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| 39 | #include <wolfssl/wolfcrypt/error-crypt.h>
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| 40 |
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| 41 | #ifdef WOLFSSL_MALLOC_CHECK
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| 42 | #include <stdio.h>
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| 43 | #endif
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| 44 |
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| 45 | /* Set these to default values initially. */
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| 46 | static wolfSSL_Malloc_cb malloc_function = 0;
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| 47 | static wolfSSL_Free_cb free_function = 0;
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| 48 | static wolfSSL_Realloc_cb realloc_function = 0;
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| 49 |
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| 50 | int wolfSSL_SetAllocators(wolfSSL_Malloc_cb mf,
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| 51 | wolfSSL_Free_cb ff,
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| 52 | wolfSSL_Realloc_cb rf)
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| 53 | {
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| 54 | int res = 0;
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| 55 |
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| 56 | if (mf)
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| 57 | malloc_function = mf;
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| 58 | else
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| 59 | res = BAD_FUNC_ARG;
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| 60 |
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| 61 | if (ff)
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| 62 | free_function = ff;
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| 63 | else
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| 64 | res = BAD_FUNC_ARG;
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| 65 |
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| 66 | if (rf)
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| 67 | realloc_function = rf;
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| 68 | else
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| 69 | res = BAD_FUNC_ARG;
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| 70 |
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| 71 | return res;
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| 72 | }
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| 73 |
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| 74 |
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| 75 | void* wolfSSL_Malloc(size_t size)
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| 76 | {
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| 77 | void* res = 0;
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| 78 |
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| 79 | if (malloc_function)
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| 80 | res = malloc_function(size);
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| 81 | else
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| 82 | res = malloc(size);
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| 83 |
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| 84 | #ifdef WOLFSSL_MALLOC_CHECK
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| 85 | if (res == NULL)
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| 86 | puts("wolfSSL_malloc failed");
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| 87 | #endif
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| 88 |
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| 89 | return res;
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| 90 | }
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| 91 |
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| 92 | void wolfSSL_Free(void *ptr)
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| 93 | {
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| 94 | if (free_function)
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| 95 | free_function(ptr);
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| 96 | else
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| 97 | free(ptr);
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| 98 | }
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| 99 |
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| 100 | void* wolfSSL_Realloc(void *ptr, size_t size)
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| 101 | {
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| 102 | void* res = 0;
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| 103 |
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| 104 | if (realloc_function)
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| 105 | res = realloc_function(ptr, size);
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| 106 | else
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| 107 | res = realloc(ptr, size);
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| 108 |
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| 109 | return res;
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| 110 | }
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| 111 |
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| 112 | #endif /* USE_WOLFSSL_MEMORY */
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| 113 |
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| 114 |
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| 115 | #ifdef HAVE_IO_POOL
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| 116 |
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| 117 | /* Example for user io pool, shared build may need definitions in lib proper */
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| 118 |
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| 119 | #include <wolfssl/wolfcrypt/types.h>
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| 120 | #include <stdlib.h>
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| 121 |
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| 122 | #ifndef HAVE_THREAD_LS
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| 123 | #error "Oops, simple I/O pool example needs thread local storage"
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| 124 | #endif
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| 125 |
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| 126 |
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| 127 | /* allow simple per thread in and out pools */
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| 128 | /* use 17k size sense max record size is 16k plus overhead */
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| 129 | static THREAD_LS_T byte pool_in[17*1024];
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| 130 | static THREAD_LS_T byte pool_out[17*1024];
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| 131 |
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| 132 |
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| 133 | void* XMALLOC(size_t n, void* heap, int type)
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| 134 | {
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| 135 | (void)heap;
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| 136 |
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| 137 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
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| 138 | if (n < sizeof(pool_in))
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| 139 | return pool_in;
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| 140 | else
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| 141 | return NULL;
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| 142 | }
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| 143 |
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| 144 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
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| 145 | if (n < sizeof(pool_out))
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| 146 | return pool_out;
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| 147 | else
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| 148 | return NULL;
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| 149 | }
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| 150 |
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| 151 | return malloc(n);
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| 152 | }
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| 153 |
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| 154 | void* XREALLOC(void *p, size_t n, void* heap, int type)
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| 155 | {
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| 156 | (void)heap;
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| 157 |
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| 158 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
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| 159 | if (n < sizeof(pool_in))
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| 160 | return pool_in;
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| 161 | else
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| 162 | return NULL;
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| 163 | }
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| 164 |
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| 165 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
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| 166 | if (n < sizeof(pool_out))
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| 167 | return pool_out;
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| 168 | else
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| 169 | return NULL;
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| 170 | }
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| 171 |
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| 172 | return realloc(p, n);
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| 173 | }
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| 174 |
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| 175 |
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| 176 | /* unit api calls, let's make sure visible with WOLFSSL_API */
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| 177 | WOLFSSL_API void XFREE(void *p, void* heap, int type)
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| 178 | {
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| 179 | (void)heap;
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| 180 |
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| 181 | if (type == DYNAMIC_TYPE_IN_BUFFER)
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| 182 | return; /* do nothing, static pool */
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| 183 |
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| 184 | if (type == DYNAMIC_TYPE_OUT_BUFFER)
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| 185 | return; /* do nothing, static pool */
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| 186 |
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| 187 | free(p);
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| 188 | }
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| 189 |
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| 190 | #endif /* HAVE_IO_POOL */
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| 191 |
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