[352] | 1 | /* memory.c
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| 2 | *
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| 3 | * Copyright (C) 2006-2017 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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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 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 |
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| 23 | #ifdef HAVE_CONFIG_H
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| 24 | #include <config.h>
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| 25 | #endif
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| 26 |
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| 27 | #include <wolfssl/wolfcrypt/settings.h>
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| 28 |
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| 29 | /* check old macros @wc_fips */
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| 30 | #if defined(USE_CYASSL_MEMORY) && !defined(USE_WOLFSSL_MEMORY)
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| 31 | #define USE_WOLFSSL_MEMORY
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| 32 | #endif
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| 33 | #if defined(CYASSL_MALLOC_CHECK) && !defined(WOLFSSL_MALLOC_CHECK)
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| 34 | #define WOLFSSL_MALLOC_CHECK
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| 35 | #endif
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| 36 |
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| 37 | #ifdef USE_WOLFSSL_MEMORY
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| 38 |
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| 39 | #include <wolfssl/wolfcrypt/memory.h>
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| 40 | #include <wolfssl/wolfcrypt/error-crypt.h>
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| 41 | #include <wolfssl/wolfcrypt/logging.h>
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| 42 |
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| 43 | #if defined(WOLFSSL_MALLOC_CHECK) || defined(WOLFSSL_TRACK_MEMORY_FULL)
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| 44 | #include <stdio.h>
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| 45 | #endif
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| 46 |
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| 47 |
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| 48 | /* Set these to default values initially. */
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| 49 | static wolfSSL_Malloc_cb malloc_function = 0;
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| 50 | static wolfSSL_Free_cb free_function = 0;
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| 51 | static wolfSSL_Realloc_cb realloc_function = 0;
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| 52 |
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| 53 | int wolfSSL_SetAllocators(wolfSSL_Malloc_cb mf,
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| 54 | wolfSSL_Free_cb ff,
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| 55 | wolfSSL_Realloc_cb rf)
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| 56 | {
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| 57 | int res = 0;
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| 58 |
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| 59 | if (mf)
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| 60 | malloc_function = mf;
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| 61 | else
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| 62 | res = BAD_FUNC_ARG;
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| 63 |
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| 64 | if (ff)
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| 65 | free_function = ff;
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| 66 | else
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| 67 | res = BAD_FUNC_ARG;
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| 68 |
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| 69 | if (rf)
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| 70 | realloc_function = rf;
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| 71 | else
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| 72 | res = BAD_FUNC_ARG;
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| 73 |
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| 74 | return res;
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| 75 | }
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| 76 |
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| 77 | int wolfSSL_GetAllocators(wolfSSL_Malloc_cb* mf,
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| 78 | wolfSSL_Free_cb* ff,
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| 79 | wolfSSL_Realloc_cb* rf)
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| 80 | {
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| 81 | if (mf) *mf = malloc_function;
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| 82 | if (ff) *ff = free_function;
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| 83 | if (rf) *rf = realloc_function;
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| 84 | return 0;
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| 85 | }
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| 86 |
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| 87 | #ifndef WOLFSSL_STATIC_MEMORY
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| 88 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 89 | void* wolfSSL_Malloc(size_t size, const char* func, unsigned int line)
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| 90 | #else
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| 91 | void* wolfSSL_Malloc(size_t size)
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| 92 | #endif
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| 93 | {
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| 94 | void* res = 0;
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| 95 |
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| 96 | if (malloc_function) {
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| 97 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 98 | res = malloc_function(size, func, line);
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| 99 | #else
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| 100 | res = malloc_function(size);
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| 101 | #endif
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| 102 | }
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| 103 | else {
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| 104 | res = malloc(size);
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| 105 | }
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| 106 |
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| 107 | #ifdef WOLFSSL_MALLOC_CHECK
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| 108 | if (res == NULL)
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| 109 | puts("wolfSSL_malloc failed");
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| 110 | #endif
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| 111 |
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| 112 | return res;
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| 113 | }
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| 114 |
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| 115 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 116 | void wolfSSL_Free(void *ptr, const char* func, unsigned int line)
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| 117 | #else
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| 118 | void wolfSSL_Free(void *ptr)
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| 119 | #endif
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| 120 | {
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| 121 | if (free_function) {
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| 122 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 123 | free_function(ptr, func, line);
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| 124 | #else
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| 125 | free_function(ptr);
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| 126 | #endif
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| 127 | }
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| 128 | else {
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| 129 | free(ptr);
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 134 | void* wolfSSL_Realloc(void *ptr, size_t size, const char* func, unsigned int line)
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| 135 | #else
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| 136 | void* wolfSSL_Realloc(void *ptr, size_t size)
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| 137 | #endif
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| 138 | {
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| 139 | void* res = 0;
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| 140 |
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| 141 | if (realloc_function) {
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| 142 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 143 | res = realloc_function(ptr, size, func, line);
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| 144 | #else
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| 145 | res = realloc_function(ptr, size);
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| 146 | #endif
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| 147 | }
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| 148 | else {
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| 149 | res = realloc(ptr, size);
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| 150 | }
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| 151 |
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| 152 | return res;
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| 153 | }
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| 154 | #endif /* WOLFSSL_STATIC_MEMORY */
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| 155 |
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| 156 | #ifdef WOLFSSL_STATIC_MEMORY
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| 157 |
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| 158 | struct wc_Memory {
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| 159 | byte* buffer;
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| 160 | struct wc_Memory* next;
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| 161 | word32 sz;
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| 162 | };
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| 163 |
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| 164 |
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| 165 | /* returns amount of memory used on success. On error returns negative value
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| 166 | wc_Memory** list is the list that new buckets are prepended to
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| 167 | */
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| 168 | static int create_memory_buckets(byte* buffer, word32 bufSz,
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| 169 | word32 buckSz, word32 buckNum, wc_Memory** list) {
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| 170 | word32 i;
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| 171 | byte* pt = buffer;
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| 172 | int ret = 0;
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| 173 | word32 memSz = (word32)sizeof(wc_Memory);
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| 174 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
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| 175 |
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| 176 | /* if not enough space available for bucket size then do not try */
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| 177 | if (buckSz + memSz + padSz > bufSz) {
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| 178 | return ret;
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| 179 | }
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| 180 |
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| 181 | for (i = 0; i < buckNum; i++) {
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| 182 | if ((buckSz + memSz + padSz) <= (bufSz - ret)) {
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| 183 | /* create a new struct and set its values */
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| 184 | wc_Memory* mem = (struct wc_Memory*)(pt);
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| 185 | mem->sz = buckSz;
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| 186 | mem->buffer = (byte*)pt + padSz + memSz;
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| 187 | mem->next = NULL;
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| 188 |
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| 189 | /* add the newly created struct to front of list */
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| 190 | if (*list == NULL) {
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| 191 | *list = mem;
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| 192 | } else {
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| 193 | mem->next = *list;
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| 194 | *list = mem;
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| 195 | }
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| 196 |
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| 197 | /* advance pointer and keep track of memory used */
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| 198 | ret += buckSz + padSz + memSz;
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| 199 | pt += buckSz + padSz + memSz;
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| 200 | }
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| 201 | else {
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| 202 | break; /* not enough space left for more buckets of this size */
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| 203 | }
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| 204 | }
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| 205 |
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| 206 | return ret;
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| 207 | }
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| 208 |
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| 209 | int wolfSSL_init_memory_heap(WOLFSSL_HEAP* heap)
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| 210 | {
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| 211 | word32 wc_MemSz[WOLFMEM_DEF_BUCKETS] = { WOLFMEM_BUCKETS };
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| 212 | word32 wc_Dist[WOLFMEM_DEF_BUCKETS] = { WOLFMEM_DIST };
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| 213 |
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| 214 | if (heap == NULL) {
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| 215 | return BAD_FUNC_ARG;
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| 216 | }
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| 217 |
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| 218 | XMEMSET(heap, 0, sizeof(WOLFSSL_HEAP));
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| 219 |
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| 220 | XMEMCPY(heap->sizeList, wc_MemSz, sizeof(wc_MemSz));
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| 221 | XMEMCPY(heap->distList, wc_Dist, sizeof(wc_Dist));
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| 222 |
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| 223 | if (wc_InitMutex(&(heap->memory_mutex)) != 0) {
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| 224 | WOLFSSL_MSG("Error creating heap memory mutex");
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| 225 | return BAD_MUTEX_E;
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| 226 | }
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| 227 |
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| 228 | return 0;
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| 229 | }
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| 230 |
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| 231 | int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
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| 232 | unsigned char* buf, unsigned int sz, int flag, int max)
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| 233 | {
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| 234 | int ret;
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| 235 | WOLFSSL_HEAP* heap;
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| 236 | WOLFSSL_HEAP_HINT* hint;
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| 237 | word32 idx = 0;
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| 238 |
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| 239 | if (pHint == NULL || buf == NULL) {
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| 240 | return BAD_FUNC_ARG;
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| 241 | }
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| 242 |
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| 243 | if ((sizeof(WOLFSSL_HEAP) + sizeof(WOLFSSL_HEAP_HINT)) > sz - idx) {
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| 244 | return BUFFER_E; /* not enough memory for structures */
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| 245 | }
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| 246 |
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| 247 | /* check if hint has already been assigned */
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| 248 | if (*pHint == NULL) {
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| 249 | heap = (WOLFSSL_HEAP*)buf;
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| 250 | idx += sizeof(WOLFSSL_HEAP);
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| 251 | hint = (WOLFSSL_HEAP_HINT*)(buf + idx);
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| 252 | idx += sizeof(WOLFSSL_HEAP_HINT);
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| 253 |
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| 254 | ret = wolfSSL_init_memory_heap(heap);
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| 255 | if (ret != 0) {
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| 256 | return ret;
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| 257 | }
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| 258 |
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| 259 | XMEMSET(hint, 0, sizeof(WOLFSSL_HEAP_HINT));
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| 260 | hint->memory = heap;
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| 261 | }
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| 262 | else {
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| 263 | #ifdef WOLFSSL_HEAP_TEST
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| 264 | /* do not load in memory if test has been set */
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| 265 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
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| 266 | return 0;
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| 267 | }
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| 268 | #endif
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| 269 |
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| 270 | hint = (WOLFSSL_HEAP_HINT*)(*pHint);
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| 271 | heap = hint->memory;
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| 272 | }
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| 273 |
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| 274 | ret = wolfSSL_load_static_memory(buf + idx, sz - idx, flag, heap);
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| 275 | if (ret != 1) {
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| 276 | WOLFSSL_MSG("Error partitioning memory");
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| 277 | return -1;
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| 278 | }
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| 279 |
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| 280 | /* determine what max applies too */
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| 281 | if ((flag & WOLFMEM_IO_POOL) || (flag & WOLFMEM_IO_POOL_FIXED)) {
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| 282 | heap->maxIO = max;
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| 283 | }
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| 284 | else { /* general memory used in handshakes */
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| 285 | heap->maxHa = max;
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| 286 | }
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| 287 |
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| 288 | heap->flag |= flag;
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| 289 | *pHint = hint;
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| 290 |
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| 291 | (void)max;
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| 292 |
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| 293 | return 0;
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| 294 | }
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| 295 |
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| 296 | int wolfSSL_load_static_memory(byte* buffer, word32 sz, int flag,
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| 297 | WOLFSSL_HEAP* heap)
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| 298 | {
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| 299 | word32 ava = sz;
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| 300 | byte* pt = buffer;
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| 301 | int ret = 0;
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| 302 | word32 memSz = (word32)sizeof(wc_Memory);
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| 303 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
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| 304 |
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| 305 | WOLFSSL_ENTER("wolfSSL_load_static_memory");
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| 306 |
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| 307 | if (buffer == NULL) {
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| 308 | return BAD_FUNC_ARG;
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| 309 | }
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| 310 |
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| 311 | /* align pt */
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| 312 | while ((wolfssl_word)pt % WOLFSSL_STATIC_ALIGN && pt < (buffer + sz)) {
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| 313 | *pt = 0x00;
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| 314 | pt++;
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| 315 | ava--;
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| 316 | }
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| 317 |
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| 318 | #ifdef WOLFSSL_DEBUG_MEMORY
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| 319 | printf("Allocated %d bytes for static memory @ %p\n", ava, pt);
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| 320 | #endif
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| 321 |
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| 322 | /* devide into chunks of memory and add them to available list */
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| 323 | while (ava >= (heap->sizeList[0] + padSz + memSz)) {
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| 324 | int i;
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| 325 | /* creating only IO buffers from memory passed in, max TLS is 16k */
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| 326 | if (flag & WOLFMEM_IO_POOL || flag & WOLFMEM_IO_POOL_FIXED) {
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| 327 | if ((ret = create_memory_buckets(pt, ava,
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| 328 | WOLFMEM_IO_SZ, 1, &(heap->io))) < 0) {
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| 329 | WOLFSSL_LEAVE("wolfSSL_load_static_memory", ret);
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| 330 | return ret;
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| 331 | }
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| 332 |
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| 333 | /* check if no more room left for creating IO buffers */
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| 334 | if (ret == 0) {
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| 335 | break;
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| 336 | }
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| 337 |
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| 338 | /* advance pointer in buffer for next buckets and keep track
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| 339 | of how much memory is left available */
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| 340 | pt += ret;
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| 341 | ava -= ret;
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| 342 | }
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| 343 | else {
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| 344 | /* start at largest and move to smaller buckets */
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| 345 | for (i = (WOLFMEM_MAX_BUCKETS - 1); i >= 0; i--) {
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| 346 | if ((heap->sizeList[i] + padSz + memSz) <= ava) {
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| 347 | if ((ret = create_memory_buckets(pt, ava, heap->sizeList[i],
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| 348 | heap->distList[i], &(heap->ava[i]))) < 0) {
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| 349 | WOLFSSL_LEAVE("wolfSSL_load_static_memory", ret);
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| 350 | return ret;
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| 351 | }
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| 352 |
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| 353 | /* advance pointer in buffer for next buckets and keep track
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| 354 | of how much memory is left available */
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| 355 | pt += ret;
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| 356 | ava -= ret;
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| 357 | }
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| 358 | }
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| 359 | }
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| 360 | }
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| 361 |
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| 362 | return 1;
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| 363 | }
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| 364 |
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| 365 |
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| 366 | /* returns the size of management memory needed for each bucket.
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| 367 | * This is memory that is used to keep track of and align memory buckets. */
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| 368 | int wolfSSL_MemoryPaddingSz(void)
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| 369 | {
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| 370 | word32 memSz = (word32)sizeof(wc_Memory);
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| 371 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
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| 372 | return memSz + padSz;
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| 373 | }
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| 374 |
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| 375 |
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| 376 | /* Used to calculate memory size for optimum use with buckets.
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| 377 | returns the suggested size rounded down to the nearest bucket. */
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| 378 | int wolfSSL_StaticBufferSz(byte* buffer, word32 sz, int flag)
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| 379 | {
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| 380 | word32 bucketSz[WOLFMEM_MAX_BUCKETS] = {WOLFMEM_BUCKETS};
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| 381 | word32 distList[WOLFMEM_MAX_BUCKETS] = {WOLFMEM_DIST};
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| 382 |
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| 383 | word32 ava = sz;
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| 384 | byte* pt = buffer;
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| 385 | word32 memSz = (word32)sizeof(wc_Memory);
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| 386 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
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| 387 |
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| 388 | WOLFSSL_ENTER("wolfSSL_static_size");
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| 389 |
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| 390 | if (buffer == NULL) {
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| 391 | return BAD_FUNC_ARG;
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| 392 | }
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| 393 |
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| 394 | /* align pt */
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| 395 | while ((wolfssl_word)pt % WOLFSSL_STATIC_ALIGN && pt < (buffer + sz)) {
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| 396 | pt++;
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| 397 | ava--;
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| 398 | }
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| 399 |
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| 400 | /* creating only IO buffers from memory passed in, max TLS is 16k */
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| 401 | if (flag & WOLFMEM_IO_POOL || flag & WOLFMEM_IO_POOL_FIXED) {
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| 402 | if (ava < (memSz + padSz + WOLFMEM_IO_SZ)) {
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| 403 | return 0; /* not enough room for even one bucket */
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| 404 | }
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| 405 |
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| 406 | ava = ava % (memSz + padSz + WOLFMEM_IO_SZ);
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| 407 | }
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| 408 | else {
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| 409 | int i, k;
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| 410 |
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| 411 | if (ava < (bucketSz[0] + padSz + memSz)) {
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| 412 | return 0; /* not enough room for even one bucket */
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| 413 | }
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| 414 |
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| 415 | while ((ava >= (bucketSz[0] + padSz + memSz)) && (ava > 0)) {
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| 416 | /* start at largest and move to smaller buckets */
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| 417 | for (i = (WOLFMEM_MAX_BUCKETS - 1); i >= 0; i--) {
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| 418 | for (k = distList[i]; k > 0; k--) {
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| 419 | if ((bucketSz[i] + padSz + memSz) <= ava) {
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| 420 | ava -= bucketSz[i] + padSz + memSz;
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| 421 | }
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| 422 | }
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| 423 | }
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| 424 | }
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| 425 | }
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| 426 |
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| 427 | return sz - ava; /* round down */
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| 428 | }
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| 429 |
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| 430 |
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| 431 | int FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io)
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| 432 | {
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| 433 | WOLFSSL_MSG("Freeing fixed IO buffer");
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| 434 |
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| 435 | /* check if fixed buffer was set */
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| 436 | if (*io == NULL) {
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| 437 | return 1;
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| 438 | }
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| 439 |
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| 440 | if (heap == NULL) {
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| 441 | WOLFSSL_MSG("No heap to return fixed IO too");
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| 442 | }
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| 443 | else {
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| 444 | /* put IO buffer back into IO pool */
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| 445 | (*io)->next = heap->io;
|
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| 446 | heap->io = *io;
|
---|
| 447 | *io = NULL;
|
---|
| 448 | }
|
---|
| 449 |
|
---|
| 450 | return 1;
|
---|
| 451 | }
|
---|
| 452 |
|
---|
| 453 |
|
---|
| 454 | int SetFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io)
|
---|
| 455 | {
|
---|
| 456 | WOLFSSL_MSG("Setting fixed IO for SSL");
|
---|
| 457 | if (heap == NULL) {
|
---|
| 458 | return MEMORY_E;
|
---|
| 459 | }
|
---|
| 460 |
|
---|
| 461 | *io = heap->io;
|
---|
| 462 |
|
---|
| 463 | if (*io != NULL) {
|
---|
| 464 | heap->io = (*io)->next;
|
---|
| 465 | (*io)->next = NULL;
|
---|
| 466 | }
|
---|
| 467 | else { /* failed to grab an IO buffer */
|
---|
| 468 | return 0;
|
---|
| 469 | }
|
---|
| 470 |
|
---|
| 471 | return 1;
|
---|
| 472 | }
|
---|
| 473 |
|
---|
| 474 |
|
---|
| 475 | int wolfSSL_GetMemStats(WOLFSSL_HEAP* heap, WOLFSSL_MEM_STATS* stats)
|
---|
| 476 | {
|
---|
| 477 | word32 i;
|
---|
| 478 | wc_Memory* pt;
|
---|
| 479 |
|
---|
| 480 | XMEMSET(stats, 0, sizeof(WOLFSSL_MEM_STATS));
|
---|
| 481 |
|
---|
| 482 | stats->totalAlloc = heap->alloc;
|
---|
| 483 | stats->totalFr = heap->frAlc;
|
---|
| 484 | stats->curAlloc = stats->totalAlloc - stats->totalFr;
|
---|
| 485 | stats->maxHa = heap->maxHa;
|
---|
| 486 | stats->maxIO = heap->maxIO;
|
---|
| 487 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 488 | stats->blockSz[i] = heap->sizeList[i];
|
---|
| 489 | for (pt = heap->ava[i]; pt != NULL; pt = pt->next) {
|
---|
| 490 | stats->avaBlock[i] += 1;
|
---|
| 491 | }
|
---|
| 492 | }
|
---|
| 493 |
|
---|
| 494 | for (pt = heap->io; pt != NULL; pt = pt->next) {
|
---|
| 495 | stats->avaIO++;
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | stats->flag = heap->flag; /* flag used */
|
---|
| 499 |
|
---|
| 500 | return 1;
|
---|
| 501 | }
|
---|
| 502 |
|
---|
| 503 |
|
---|
| 504 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 505 | void* wolfSSL_Malloc(size_t size, void* heap, int type, const char* func, unsigned int line)
|
---|
| 506 | #else
|
---|
| 507 | void* wolfSSL_Malloc(size_t size, void* heap, int type)
|
---|
| 508 | #endif
|
---|
| 509 | {
|
---|
| 510 | void* res = 0;
|
---|
| 511 | wc_Memory* pt = NULL;
|
---|
| 512 | int i;
|
---|
| 513 |
|
---|
| 514 | /* check for testing heap hint was set */
|
---|
| 515 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 516 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 517 | return malloc(size);
|
---|
| 518 | }
|
---|
| 519 | #endif
|
---|
| 520 |
|
---|
| 521 | /* if no heap hint then use dynamic memory*/
|
---|
| 522 | if (heap == NULL) {
|
---|
| 523 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 524 | /* allow using malloc for creating ctx and method */
|
---|
| 525 | if (type == DYNAMIC_TYPE_CTX || type == DYNAMIC_TYPE_METHOD ||
|
---|
| 526 | type == DYNAMIC_TYPE_CERT_MANAGER) {
|
---|
| 527 | WOLFSSL_MSG("ERROR allowing null heap hint for ctx/method\n");
|
---|
| 528 | res = malloc(size);
|
---|
| 529 | }
|
---|
| 530 | else {
|
---|
| 531 | WOLFSSL_MSG("ERROR null heap hint passed into XMALLOC\n");
|
---|
| 532 | res = NULL;
|
---|
| 533 | }
|
---|
| 534 | #else
|
---|
| 535 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 536 | res = malloc(size);
|
---|
| 537 | #else
|
---|
| 538 | WOLFSSL_MSG("No heap hint found to use and no malloc");
|
---|
| 539 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 540 | printf("ERROR: at %s:%d\n", func, line);
|
---|
| 541 | #endif
|
---|
| 542 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 543 | #endif /* WOLFSSL_HEAP_TEST */
|
---|
| 544 | }
|
---|
| 545 | else {
|
---|
| 546 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 547 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 548 |
|
---|
| 549 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 550 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 551 | return NULL;
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | /* case of using fixed IO buffers */
|
---|
| 555 | if (mem->flag & WOLFMEM_IO_POOL_FIXED &&
|
---|
| 556 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 557 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 558 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 559 | pt = hint->outBuf;
|
---|
| 560 | }
|
---|
| 561 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 562 | pt = hint->inBuf;
|
---|
| 563 | }
|
---|
| 564 | }
|
---|
| 565 | else {
|
---|
| 566 | /* check if using IO pool flag */
|
---|
| 567 | if (mem->flag & WOLFMEM_IO_POOL &&
|
---|
| 568 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 569 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 570 | if (mem->io != NULL) {
|
---|
| 571 | pt = mem->io;
|
---|
| 572 | mem->io = pt->next;
|
---|
| 573 | }
|
---|
| 574 | }
|
---|
| 575 |
|
---|
| 576 | /* general static memory */
|
---|
| 577 | if (pt == NULL) {
|
---|
| 578 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 579 | if ((word32)size < mem->sizeList[i]) {
|
---|
| 580 | if (mem->ava[i] != NULL) {
|
---|
| 581 | pt = mem->ava[i];
|
---|
| 582 | mem->ava[i] = pt->next;
|
---|
| 583 | break;
|
---|
| 584 | }
|
---|
| 585 | }
|
---|
| 586 | }
|
---|
| 587 | }
|
---|
| 588 | }
|
---|
| 589 |
|
---|
| 590 | if (pt != NULL) {
|
---|
| 591 | mem->inUse += pt->sz;
|
---|
| 592 | mem->alloc += 1;
|
---|
| 593 | res = pt->buffer;
|
---|
| 594 |
|
---|
| 595 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 596 | printf("Alloc: %p -> %u at %s:%d\n", pt->buffer, pt->sz, func, line);
|
---|
| 597 | #endif
|
---|
| 598 |
|
---|
| 599 | /* keep track of connection statistics if flag is set */
|
---|
| 600 | if (mem->flag & WOLFMEM_TRACK_STATS) {
|
---|
| 601 | WOLFSSL_MEM_CONN_STATS* stats = hint->stats;
|
---|
| 602 | if (stats != NULL) {
|
---|
| 603 | stats->curMem += pt->sz;
|
---|
| 604 | if (stats->peakMem < stats->curMem) {
|
---|
| 605 | stats->peakMem = stats->curMem;
|
---|
| 606 | }
|
---|
| 607 | stats->curAlloc++;
|
---|
| 608 | if (stats->peakAlloc < stats->curAlloc) {
|
---|
| 609 | stats->peakAlloc = stats->curAlloc;
|
---|
| 610 | }
|
---|
| 611 | stats->totalAlloc++;
|
---|
| 612 | }
|
---|
| 613 | }
|
---|
| 614 | }
|
---|
| 615 | else {
|
---|
| 616 | WOLFSSL_MSG("ERROR ran out of static memory");
|
---|
| 617 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 618 | printf("Looking for %lu bytes at %s:%d\n", size, func, line);
|
---|
| 619 | #endif
|
---|
| 620 | }
|
---|
| 621 |
|
---|
| 622 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 623 | }
|
---|
| 624 |
|
---|
| 625 | #ifdef WOLFSSL_MALLOC_CHECK
|
---|
| 626 | if ((wolfssl_word)res % WOLFSSL_STATIC_ALIGN) {
|
---|
| 627 | WOLFSSL_MSG("ERROR memory is not alligned");
|
---|
| 628 | res = NULL;
|
---|
| 629 | }
|
---|
| 630 | #endif
|
---|
| 631 |
|
---|
| 632 |
|
---|
| 633 | (void)i;
|
---|
| 634 | (void)pt;
|
---|
| 635 | (void)type;
|
---|
| 636 |
|
---|
| 637 | return res;
|
---|
| 638 | }
|
---|
| 639 |
|
---|
| 640 |
|
---|
| 641 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 642 | void wolfSSL_Free(void *ptr, void* heap, int type, const char* func, unsigned int line)
|
---|
| 643 | #else
|
---|
| 644 | void wolfSSL_Free(void *ptr, void* heap, int type)
|
---|
| 645 | #endif
|
---|
| 646 | {
|
---|
| 647 | int i;
|
---|
| 648 | wc_Memory* pt;
|
---|
| 649 |
|
---|
| 650 | if (ptr) {
|
---|
| 651 | /* check for testing heap hint was set */
|
---|
| 652 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 653 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 654 | return free(ptr);
|
---|
| 655 | }
|
---|
| 656 | #endif
|
---|
| 657 |
|
---|
| 658 | if (heap == NULL) {
|
---|
| 659 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 660 | /* allow using malloc for creating ctx and method */
|
---|
| 661 | if (type == DYNAMIC_TYPE_CTX || type == DYNAMIC_TYPE_METHOD ||
|
---|
| 662 | type == DYNAMIC_TYPE_CERT_MANAGER) {
|
---|
| 663 | WOLFSSL_MSG("ERROR allowing null heap hint for ctx/method\n");
|
---|
| 664 | }
|
---|
| 665 | else {
|
---|
| 666 | WOLFSSL_MSG("ERROR null heap hint passed into XFREE\n");
|
---|
| 667 | }
|
---|
| 668 | #endif
|
---|
| 669 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 670 | free(ptr);
|
---|
| 671 | #else
|
---|
| 672 | WOLFSSL_MSG("Error trying to call free when turned off");
|
---|
| 673 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 674 | }
|
---|
| 675 | else {
|
---|
| 676 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 677 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 678 | word32 padSz = -(int)sizeof(wc_Memory) & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 679 |
|
---|
| 680 | /* get memory struct and add it to available list */
|
---|
| 681 | pt = (wc_Memory*)((byte*)ptr - sizeof(wc_Memory) - padSz);
|
---|
| 682 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 683 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 684 | return;
|
---|
| 685 | }
|
---|
| 686 |
|
---|
| 687 | /* case of using fixed IO buffers */
|
---|
| 688 | if (mem->flag & WOLFMEM_IO_POOL_FIXED &&
|
---|
| 689 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 690 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 691 | /* fixed IO pools are free'd at the end of SSL lifetime
|
---|
| 692 | using FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io) */
|
---|
| 693 | }
|
---|
| 694 | else if (mem->flag & WOLFMEM_IO_POOL && pt->sz == WOLFMEM_IO_SZ &&
|
---|
| 695 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 696 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 697 | pt->next = mem->io;
|
---|
| 698 | mem->io = pt;
|
---|
| 699 | }
|
---|
| 700 | else { /* general memory free */
|
---|
| 701 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 702 | if (pt->sz == mem->sizeList[i]) {
|
---|
| 703 | pt->next = mem->ava[i];
|
---|
| 704 | mem->ava[i] = pt;
|
---|
| 705 | break;
|
---|
| 706 | }
|
---|
| 707 | }
|
---|
| 708 | }
|
---|
| 709 | mem->inUse -= pt->sz;
|
---|
| 710 | mem->frAlc += 1;
|
---|
| 711 |
|
---|
| 712 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 713 | printf("Free: %p -> %u at %s:%d\n", pt->buffer, pt->sz, func, line);
|
---|
| 714 | #endif
|
---|
| 715 |
|
---|
| 716 | /* keep track of connection statistics if flag is set */
|
---|
| 717 | if (mem->flag & WOLFMEM_TRACK_STATS) {
|
---|
| 718 | WOLFSSL_MEM_CONN_STATS* stats = hint->stats;
|
---|
| 719 | if (stats != NULL) {
|
---|
| 720 | /* avoid under flow */
|
---|
| 721 | if (stats->curMem > pt->sz) {
|
---|
| 722 | stats->curMem -= pt->sz;
|
---|
| 723 | }
|
---|
| 724 | else {
|
---|
| 725 | stats->curMem = 0;
|
---|
| 726 | }
|
---|
| 727 |
|
---|
| 728 | if (stats->curAlloc > 0) {
|
---|
| 729 | stats->curAlloc--;
|
---|
| 730 | }
|
---|
| 731 | stats->totalFr++;
|
---|
| 732 | }
|
---|
| 733 | }
|
---|
| 734 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | (void)i;
|
---|
| 739 | (void)pt;
|
---|
| 740 | (void)type;
|
---|
| 741 | }
|
---|
| 742 |
|
---|
| 743 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 744 | void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line)
|
---|
| 745 | #else
|
---|
| 746 | void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type)
|
---|
| 747 | #endif
|
---|
| 748 | {
|
---|
| 749 | void* res = 0;
|
---|
| 750 | wc_Memory* pt = NULL;
|
---|
| 751 | word32 prvSz;
|
---|
| 752 | int i;
|
---|
| 753 |
|
---|
| 754 | /* check for testing heap hint was set */
|
---|
| 755 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 756 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 757 | return realloc(ptr, size);
|
---|
| 758 | }
|
---|
| 759 | #endif
|
---|
| 760 |
|
---|
| 761 | if (heap == NULL) {
|
---|
| 762 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 763 | WOLFSSL_MSG("ERROR null heap hint passed in to XREALLOC\n");
|
---|
| 764 | #endif
|
---|
| 765 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 766 | res = realloc(ptr, size);
|
---|
| 767 | #else
|
---|
| 768 | WOLFSSL_MSG("NO heap found to use for realloc");
|
---|
| 769 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 770 | }
|
---|
| 771 | else {
|
---|
| 772 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 773 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 774 | word32 padSz = -(int)sizeof(wc_Memory) & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 775 |
|
---|
| 776 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 777 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 778 | return NULL;
|
---|
| 779 | }
|
---|
| 780 |
|
---|
| 781 | /* case of using fixed IO buffers or IO pool */
|
---|
| 782 | if (((mem->flag & WOLFMEM_IO_POOL)||(mem->flag & WOLFMEM_IO_POOL_FIXED))
|
---|
| 783 | && (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 784 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 785 | /* no realloc, is fixed size */
|
---|
| 786 | pt = (wc_Memory*)((byte*)ptr - padSz - sizeof(wc_Memory));
|
---|
| 787 | if (pt->sz < size) {
|
---|
| 788 | WOLFSSL_MSG("Error IO memory was not large enough");
|
---|
| 789 | res = NULL; /* return NULL in error case */
|
---|
| 790 | }
|
---|
| 791 | res = pt->buffer;
|
---|
| 792 | }
|
---|
| 793 | else {
|
---|
| 794 | /* general memory */
|
---|
| 795 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 796 | if ((word32)size < mem->sizeList[i]) {
|
---|
| 797 | if (mem->ava[i] != NULL) {
|
---|
| 798 | pt = mem->ava[i];
|
---|
| 799 | mem->ava[i] = pt->next;
|
---|
| 800 | break;
|
---|
| 801 | }
|
---|
| 802 | }
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | if (pt != NULL && res == NULL) {
|
---|
| 806 | res = pt->buffer;
|
---|
| 807 |
|
---|
| 808 | /* copy over original information and free ptr */
|
---|
| 809 | prvSz = ((wc_Memory*)((byte*)ptr - padSz -
|
---|
| 810 | sizeof(wc_Memory)))->sz;
|
---|
| 811 | prvSz = (prvSz > pt->sz)? pt->sz: prvSz;
|
---|
| 812 | XMEMCPY(pt->buffer, ptr, prvSz);
|
---|
| 813 | mem->inUse += pt->sz;
|
---|
| 814 | mem->alloc += 1;
|
---|
| 815 |
|
---|
| 816 | /* free memory that was previously being used */
|
---|
| 817 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 818 | wolfSSL_Free(ptr, heap, type
|
---|
| 819 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 820 | , func, line
|
---|
| 821 | #endif
|
---|
| 822 | );
|
---|
| 823 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 824 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 825 | return NULL;
|
---|
| 826 | }
|
---|
| 827 | }
|
---|
| 828 | }
|
---|
| 829 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 830 | }
|
---|
| 831 |
|
---|
| 832 | #ifdef WOLFSSL_MALLOC_CHECK
|
---|
| 833 | if ((wolfssl_word)res % WOLFSSL_STATIC_ALIGN) {
|
---|
| 834 | WOLFSSL_MSG("ERROR memory is not alligned");
|
---|
| 835 | res = NULL;
|
---|
| 836 | }
|
---|
| 837 | #endif
|
---|
| 838 |
|
---|
| 839 | (void)i;
|
---|
| 840 | (void)pt;
|
---|
| 841 | (void)type;
|
---|
| 842 |
|
---|
| 843 | return res;
|
---|
| 844 | }
|
---|
| 845 | #endif /* WOLFSSL_STATIC_MEMORY */
|
---|
| 846 |
|
---|
| 847 | #endif /* USE_WOLFSSL_MEMORY */
|
---|
| 848 |
|
---|
| 849 |
|
---|
| 850 | #ifdef HAVE_IO_POOL
|
---|
| 851 |
|
---|
| 852 | /* Example for user io pool, shared build may need definitions in lib proper */
|
---|
| 853 |
|
---|
| 854 | #include <wolfssl/wolfcrypt/types.h>
|
---|
| 855 | #include <stdlib.h>
|
---|
| 856 |
|
---|
| 857 | #ifndef HAVE_THREAD_LS
|
---|
| 858 | #error "Oops, simple I/O pool example needs thread local storage"
|
---|
| 859 | #endif
|
---|
| 860 |
|
---|
| 861 |
|
---|
| 862 | /* allow simple per thread in and out pools */
|
---|
| 863 | /* use 17k size since max record size is 16k plus overhead */
|
---|
| 864 | static THREAD_LS_T byte pool_in[17*1024];
|
---|
| 865 | static THREAD_LS_T byte pool_out[17*1024];
|
---|
| 866 |
|
---|
| 867 |
|
---|
| 868 | void* XMALLOC(size_t n, void* heap, int type)
|
---|
| 869 | {
|
---|
| 870 | (void)heap;
|
---|
| 871 |
|
---|
| 872 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 873 | if (n < sizeof(pool_in))
|
---|
| 874 | return pool_in;
|
---|
| 875 | else
|
---|
| 876 | return NULL;
|
---|
| 877 | }
|
---|
| 878 |
|
---|
| 879 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 880 | if (n < sizeof(pool_out))
|
---|
| 881 | return pool_out;
|
---|
| 882 | else
|
---|
| 883 | return NULL;
|
---|
| 884 | }
|
---|
| 885 |
|
---|
| 886 | return malloc(n);
|
---|
| 887 | }
|
---|
| 888 |
|
---|
| 889 | void* XREALLOC(void *p, size_t n, void* heap, int type)
|
---|
| 890 | {
|
---|
| 891 | (void)heap;
|
---|
| 892 |
|
---|
| 893 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 894 | if (n < sizeof(pool_in))
|
---|
| 895 | return pool_in;
|
---|
| 896 | else
|
---|
| 897 | return NULL;
|
---|
| 898 | }
|
---|
| 899 |
|
---|
| 900 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 901 | if (n < sizeof(pool_out))
|
---|
| 902 | return pool_out;
|
---|
| 903 | else
|
---|
| 904 | return NULL;
|
---|
| 905 | }
|
---|
| 906 |
|
---|
| 907 | return realloc(p, n);
|
---|
| 908 | }
|
---|
| 909 |
|
---|
| 910 | void XFREE(void *p, void* heap, int type)
|
---|
| 911 | {
|
---|
| 912 | (void)heap;
|
---|
| 913 |
|
---|
| 914 | if (type == DYNAMIC_TYPE_IN_BUFFER)
|
---|
| 915 | return; /* do nothing, static pool */
|
---|
| 916 |
|
---|
| 917 | if (type == DYNAMIC_TYPE_OUT_BUFFER)
|
---|
| 918 | return; /* do nothing, static pool */
|
---|
| 919 |
|
---|
| 920 | free(p);
|
---|
| 921 | }
|
---|
| 922 |
|
---|
| 923 | #endif /* HAVE_IO_POOL */
|
---|
| 924 |
|
---|