[457] | 1 | /* memory.c
|
---|
| 2 | *
|
---|
| 3 | * Copyright (C) 2006-2020 wolfSSL Inc.
|
---|
| 4 | *
|
---|
| 5 | * This file is part of wolfSSL.
|
---|
| 6 | *
|
---|
| 7 | * wolfSSL is free software; you can redistribute it and/or modify
|
---|
| 8 | * it under the terms of the GNU General Public License as published by
|
---|
| 9 | * the Free Software Foundation; either version 2 of the License, or
|
---|
| 10 | * (at your option) any later version.
|
---|
| 11 | *
|
---|
| 12 | * wolfSSL is distributed in the hope that it will be useful,
|
---|
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 15 | * GNU General Public License for more details.
|
---|
| 16 | *
|
---|
| 17 | * You should have received a copy of the GNU General Public License
|
---|
| 18 | * along with this program; if not, write to the Free Software
|
---|
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
---|
| 20 | */
|
---|
| 21 |
|
---|
| 22 |
|
---|
| 23 | #ifdef HAVE_CONFIG_H
|
---|
| 24 | #include <config.h>
|
---|
| 25 | #endif
|
---|
| 26 |
|
---|
| 27 | #include <wolfssl/wolfcrypt/settings.h>
|
---|
| 28 |
|
---|
| 29 | /* check old macros @wc_fips */
|
---|
| 30 | #if defined(USE_CYASSL_MEMORY) && !defined(USE_WOLFSSL_MEMORY)
|
---|
| 31 | #define USE_WOLFSSL_MEMORY
|
---|
| 32 | #endif
|
---|
| 33 | #if defined(CYASSL_MALLOC_CHECK) && !defined(WOLFSSL_MALLOC_CHECK)
|
---|
| 34 | #define WOLFSSL_MALLOC_CHECK
|
---|
| 35 | #endif
|
---|
| 36 |
|
---|
| 37 |
|
---|
| 38 | /*
|
---|
| 39 | Possible memory options:
|
---|
| 40 | * NO_WOLFSSL_MEMORY: Disables wolf memory callback support. When not defined settings.h defines USE_WOLFSSL_MEMORY.
|
---|
| 41 | * WOLFSSL_STATIC_MEMORY: Turns on the use of static memory buffers and functions.
|
---|
| 42 | This allows for using static memory instead of dynamic.
|
---|
| 43 | * WOLFSSL_STATIC_ALIGN: Define defaults to 16 to indicate static memory alignment.
|
---|
| 44 | * HAVE_IO_POOL: Enables use of static thread safe memory pool for input/output buffers.
|
---|
| 45 | * XMALLOC_OVERRIDE: Allows override of the XMALLOC, XFREE and XREALLOC macros.
|
---|
| 46 | * XMALLOC_USER: Allows custom XMALLOC, XFREE and XREALLOC functions to be defined.
|
---|
| 47 | * WOLFSSL_NO_MALLOC: Disables the fall-back case to use STDIO malloc/free when no callbacks are set.
|
---|
| 48 | * WOLFSSL_TRACK_MEMORY: Enables memory tracking for total stats and list of allocated memory.
|
---|
| 49 | * WOLFSSL_DEBUG_MEMORY: Enables extra function and line number args for memory callbacks.
|
---|
| 50 | * WOLFSSL_DEBUG_MEMORY_PRINT: Enables printing of each malloc/free.
|
---|
| 51 | * WOLFSSL_MALLOC_CHECK: Reports malloc or alignment failure using WOLFSSL_STATIC_ALIGN
|
---|
| 52 | * WOLFSSL_FORCE_MALLOC_FAIL_TEST: Used for internal testing to induce random malloc failures.
|
---|
| 53 | * WOLFSSL_HEAP_TEST: Used for internal testing of heap hint
|
---|
| 54 | */
|
---|
| 55 |
|
---|
| 56 | #ifdef WOLFSSL_ZEPHYR
|
---|
| 57 | #undef realloc
|
---|
| 58 | void *z_realloc(void *ptr, size_t size)
|
---|
| 59 | {
|
---|
| 60 | if (ptr == NULL)
|
---|
| 61 | ptr = malloc(size);
|
---|
| 62 | else
|
---|
| 63 | ptr = realloc(ptr, size);
|
---|
| 64 |
|
---|
| 65 | return ptr;
|
---|
| 66 | }
|
---|
| 67 | #define realloc z_realloc
|
---|
| 68 | #endif
|
---|
| 69 |
|
---|
| 70 | #ifdef USE_WOLFSSL_MEMORY
|
---|
| 71 |
|
---|
| 72 | #include <wolfssl/wolfcrypt/memory.h>
|
---|
| 73 | #include <wolfssl/wolfcrypt/error-crypt.h>
|
---|
| 74 | #include <wolfssl/wolfcrypt/logging.h>
|
---|
| 75 |
|
---|
| 76 | #if defined(WOLFSSL_DEBUG_MEMORY) && defined(WOLFSSL_DEBUG_MEMORY_PRINT)
|
---|
| 77 | #include <stdio.h>
|
---|
| 78 | #endif
|
---|
| 79 |
|
---|
| 80 | #ifdef WOLFSSL_FORCE_MALLOC_FAIL_TEST
|
---|
| 81 | static int gMemFailCountSeed;
|
---|
| 82 | static int gMemFailCount;
|
---|
| 83 | void wolfSSL_SetMemFailCount(int memFailCount)
|
---|
| 84 | {
|
---|
| 85 | if (gMemFailCountSeed == 0) {
|
---|
| 86 | gMemFailCountSeed = memFailCount;
|
---|
| 87 | gMemFailCount = memFailCount;
|
---|
| 88 | }
|
---|
| 89 | }
|
---|
| 90 | #endif
|
---|
| 91 | #if defined(WOLFSSL_MALLOC_CHECK) || defined(WOLFSSL_TRACK_MEMORY_FULL) || \
|
---|
| 92 | defined(WOLFSSL_MEMORY_LOG)
|
---|
| 93 | #include <stdio.h>
|
---|
| 94 | #endif
|
---|
| 95 |
|
---|
| 96 |
|
---|
| 97 | /* Set these to default values initially. */
|
---|
| 98 | static wolfSSL_Malloc_cb malloc_function = NULL;
|
---|
| 99 | static wolfSSL_Free_cb free_function = NULL;
|
---|
| 100 | static wolfSSL_Realloc_cb realloc_function = NULL;
|
---|
| 101 |
|
---|
| 102 | int wolfSSL_SetAllocators(wolfSSL_Malloc_cb mf,
|
---|
| 103 | wolfSSL_Free_cb ff,
|
---|
| 104 | wolfSSL_Realloc_cb rf)
|
---|
| 105 | {
|
---|
| 106 | malloc_function = mf;
|
---|
| 107 | free_function = ff;
|
---|
| 108 | realloc_function = rf;
|
---|
| 109 | return 0;
|
---|
| 110 | }
|
---|
| 111 |
|
---|
| 112 | int wolfSSL_GetAllocators(wolfSSL_Malloc_cb* mf,
|
---|
| 113 | wolfSSL_Free_cb* ff,
|
---|
| 114 | wolfSSL_Realloc_cb* rf)
|
---|
| 115 | {
|
---|
| 116 | if (mf) *mf = malloc_function;
|
---|
| 117 | if (ff) *ff = free_function;
|
---|
| 118 | if (rf) *rf = realloc_function;
|
---|
| 119 | return 0;
|
---|
| 120 | }
|
---|
| 121 |
|
---|
| 122 | #ifndef WOLFSSL_STATIC_MEMORY
|
---|
| 123 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 124 | void* wolfSSL_Malloc(size_t size, const char* func, unsigned int line)
|
---|
| 125 | #else
|
---|
| 126 | void* wolfSSL_Malloc(size_t size)
|
---|
| 127 | #endif
|
---|
| 128 | {
|
---|
| 129 | void* res = 0;
|
---|
| 130 |
|
---|
| 131 | if (malloc_function) {
|
---|
| 132 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 133 | res = malloc_function(size, func, line);
|
---|
| 134 | #else
|
---|
| 135 | res = malloc_function(size);
|
---|
| 136 | #endif
|
---|
| 137 | }
|
---|
| 138 | else {
|
---|
| 139 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 140 | res = malloc(size);
|
---|
| 141 | #else
|
---|
| 142 | WOLFSSL_MSG("No malloc available");
|
---|
| 143 | #endif
|
---|
| 144 | }
|
---|
| 145 |
|
---|
| 146 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 147 | #if defined(WOLFSSL_DEBUG_MEMORY_PRINT) && !defined(WOLFSSL_TRACK_MEMORY)
|
---|
| 148 | printf("Alloc: %p -> %u at %s:%d\n", res, (word32)size, func, line);
|
---|
| 149 | #else
|
---|
| 150 | (void)func;
|
---|
| 151 | (void)line;
|
---|
| 152 | #endif
|
---|
| 153 | #endif
|
---|
| 154 |
|
---|
| 155 | #ifdef WOLFSSL_MALLOC_CHECK
|
---|
| 156 | if (res == NULL)
|
---|
| 157 | WOLFSSL_MSG("wolfSSL_malloc failed");
|
---|
| 158 | #endif
|
---|
| 159 |
|
---|
| 160 | #ifdef WOLFSSL_FORCE_MALLOC_FAIL_TEST
|
---|
| 161 | if (res && --gMemFailCount == 0) {
|
---|
| 162 | printf("\n---FORCED MEM FAIL TEST---\n");
|
---|
| 163 | if (free_function) {
|
---|
| 164 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 165 | free_function(res, func, line);
|
---|
| 166 | #else
|
---|
| 167 | free_function(res);
|
---|
| 168 | #endif
|
---|
| 169 | }
|
---|
| 170 | else {
|
---|
| 171 | free(res); /* clear */
|
---|
| 172 | }
|
---|
| 173 | gMemFailCount = gMemFailCountSeed; /* reset */
|
---|
| 174 | return NULL;
|
---|
| 175 | }
|
---|
| 176 | #endif
|
---|
| 177 |
|
---|
| 178 | return res;
|
---|
| 179 | }
|
---|
| 180 |
|
---|
| 181 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 182 | void wolfSSL_Free(void *ptr, const char* func, unsigned int line)
|
---|
| 183 | #else
|
---|
| 184 | void wolfSSL_Free(void *ptr)
|
---|
| 185 | #endif
|
---|
| 186 | {
|
---|
| 187 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 188 | #if defined(WOLFSSL_DEBUG_MEMORY_PRINT) && !defined(WOLFSSL_TRACK_MEMORY)
|
---|
| 189 | printf("Free: %p at %s:%d\n", ptr, func, line);
|
---|
| 190 | #else
|
---|
| 191 | (void)func;
|
---|
| 192 | (void)line;
|
---|
| 193 | #endif
|
---|
| 194 | #endif
|
---|
| 195 |
|
---|
| 196 | if (free_function) {
|
---|
| 197 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 198 | free_function(ptr, func, line);
|
---|
| 199 | #else
|
---|
| 200 | free_function(ptr);
|
---|
| 201 | #endif
|
---|
| 202 | }
|
---|
| 203 | else {
|
---|
| 204 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 205 | free(ptr);
|
---|
| 206 | #else
|
---|
| 207 | WOLFSSL_MSG("No free available");
|
---|
| 208 | #endif
|
---|
| 209 | }
|
---|
| 210 | }
|
---|
| 211 |
|
---|
| 212 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 213 | void* wolfSSL_Realloc(void *ptr, size_t size, const char* func, unsigned int line)
|
---|
| 214 | #else
|
---|
| 215 | void* wolfSSL_Realloc(void *ptr, size_t size)
|
---|
| 216 | #endif
|
---|
| 217 | {
|
---|
| 218 | void* res = 0;
|
---|
| 219 |
|
---|
| 220 | if (realloc_function) {
|
---|
| 221 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 222 | res = realloc_function(ptr, size, func, line);
|
---|
| 223 | #else
|
---|
| 224 | res = realloc_function(ptr, size);
|
---|
| 225 | #endif
|
---|
| 226 | }
|
---|
| 227 | else {
|
---|
| 228 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 229 | res = realloc(ptr, size);
|
---|
| 230 | #else
|
---|
| 231 | WOLFSSL_MSG("No realloc available");
|
---|
| 232 | #endif
|
---|
| 233 | }
|
---|
| 234 |
|
---|
| 235 | return res;
|
---|
| 236 | }
|
---|
| 237 | #endif /* WOLFSSL_STATIC_MEMORY */
|
---|
| 238 |
|
---|
| 239 | #ifdef WOLFSSL_STATIC_MEMORY
|
---|
| 240 |
|
---|
| 241 | struct wc_Memory {
|
---|
| 242 | byte* buffer;
|
---|
| 243 | struct wc_Memory* next;
|
---|
| 244 | word32 sz;
|
---|
| 245 | };
|
---|
| 246 |
|
---|
| 247 |
|
---|
| 248 | /* returns amount of memory used on success. On error returns negative value
|
---|
| 249 | wc_Memory** list is the list that new buckets are prepended to
|
---|
| 250 | */
|
---|
| 251 | static int create_memory_buckets(byte* buffer, word32 bufSz,
|
---|
| 252 | word32 buckSz, word32 buckNum, wc_Memory** list) {
|
---|
| 253 | word32 i;
|
---|
| 254 | byte* pt = buffer;
|
---|
| 255 | int ret = 0;
|
---|
| 256 | word32 memSz = (word32)sizeof(wc_Memory);
|
---|
| 257 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 258 |
|
---|
| 259 | /* if not enough space available for bucket size then do not try */
|
---|
| 260 | if (buckSz + memSz + padSz > bufSz) {
|
---|
| 261 | return ret;
|
---|
| 262 | }
|
---|
| 263 |
|
---|
| 264 | for (i = 0; i < buckNum; i++) {
|
---|
| 265 | if ((buckSz + memSz + padSz) <= (bufSz - ret)) {
|
---|
| 266 | /* create a new struct and set its values */
|
---|
| 267 | wc_Memory* mem = (struct wc_Memory*)(pt);
|
---|
| 268 | mem->sz = buckSz;
|
---|
| 269 | mem->buffer = (byte*)pt + padSz + memSz;
|
---|
| 270 | mem->next = NULL;
|
---|
| 271 |
|
---|
| 272 | /* add the newly created struct to front of list */
|
---|
| 273 | if (*list == NULL) {
|
---|
| 274 | *list = mem;
|
---|
| 275 | } else {
|
---|
| 276 | mem->next = *list;
|
---|
| 277 | *list = mem;
|
---|
| 278 | }
|
---|
| 279 |
|
---|
| 280 | /* advance pointer and keep track of memory used */
|
---|
| 281 | ret += buckSz + padSz + memSz;
|
---|
| 282 | pt += buckSz + padSz + memSz;
|
---|
| 283 | }
|
---|
| 284 | else {
|
---|
| 285 | break; /* not enough space left for more buckets of this size */
|
---|
| 286 | }
|
---|
| 287 | }
|
---|
| 288 |
|
---|
| 289 | return ret;
|
---|
| 290 | }
|
---|
| 291 |
|
---|
| 292 | int wolfSSL_init_memory_heap(WOLFSSL_HEAP* heap)
|
---|
| 293 | {
|
---|
| 294 | word32 wc_MemSz[WOLFMEM_DEF_BUCKETS] = { WOLFMEM_BUCKETS };
|
---|
| 295 | word32 wc_Dist[WOLFMEM_DEF_BUCKETS] = { WOLFMEM_DIST };
|
---|
| 296 |
|
---|
| 297 | if (heap == NULL) {
|
---|
| 298 | return BAD_FUNC_ARG;
|
---|
| 299 | }
|
---|
| 300 |
|
---|
| 301 | XMEMSET(heap, 0, sizeof(WOLFSSL_HEAP));
|
---|
| 302 |
|
---|
| 303 | XMEMCPY(heap->sizeList, wc_MemSz, sizeof(wc_MemSz));
|
---|
| 304 | XMEMCPY(heap->distList, wc_Dist, sizeof(wc_Dist));
|
---|
| 305 |
|
---|
| 306 | if (wc_InitMutex(&(heap->memory_mutex)) != 0) {
|
---|
| 307 | WOLFSSL_MSG("Error creating heap memory mutex");
|
---|
| 308 | return BAD_MUTEX_E;
|
---|
| 309 | }
|
---|
| 310 |
|
---|
| 311 | return 0;
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 | int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
|
---|
| 315 | unsigned char* buf, unsigned int sz, int flag, int max)
|
---|
| 316 | {
|
---|
| 317 | int ret;
|
---|
| 318 | WOLFSSL_HEAP* heap;
|
---|
| 319 | WOLFSSL_HEAP_HINT* hint;
|
---|
| 320 | word32 idx = 0;
|
---|
| 321 |
|
---|
| 322 | if (pHint == NULL || buf == NULL) {
|
---|
| 323 | return BAD_FUNC_ARG;
|
---|
| 324 | }
|
---|
| 325 |
|
---|
| 326 | if ((sizeof(WOLFSSL_HEAP) + sizeof(WOLFSSL_HEAP_HINT)) > sz - idx) {
|
---|
| 327 | return BUFFER_E; /* not enough memory for structures */
|
---|
| 328 | }
|
---|
| 329 |
|
---|
| 330 | /* check if hint has already been assigned */
|
---|
| 331 | if (*pHint == NULL) {
|
---|
| 332 | heap = (WOLFSSL_HEAP*)buf;
|
---|
| 333 | idx += sizeof(WOLFSSL_HEAP);
|
---|
| 334 | hint = (WOLFSSL_HEAP_HINT*)(buf + idx);
|
---|
| 335 | idx += sizeof(WOLFSSL_HEAP_HINT);
|
---|
| 336 |
|
---|
| 337 | ret = wolfSSL_init_memory_heap(heap);
|
---|
| 338 | if (ret != 0) {
|
---|
| 339 | return ret;
|
---|
| 340 | }
|
---|
| 341 |
|
---|
| 342 | XMEMSET(hint, 0, sizeof(WOLFSSL_HEAP_HINT));
|
---|
| 343 | hint->memory = heap;
|
---|
| 344 | }
|
---|
| 345 | else {
|
---|
| 346 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 347 | /* do not load in memory if test has been set */
|
---|
| 348 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 349 | return 0;
|
---|
| 350 | }
|
---|
| 351 | #endif
|
---|
| 352 |
|
---|
| 353 | hint = (WOLFSSL_HEAP_HINT*)(*pHint);
|
---|
| 354 | heap = hint->memory;
|
---|
| 355 | }
|
---|
| 356 |
|
---|
| 357 | ret = wolfSSL_load_static_memory(buf + idx, sz - idx, flag, heap);
|
---|
| 358 | if (ret != 1) {
|
---|
| 359 | WOLFSSL_MSG("Error partitioning memory");
|
---|
| 360 | return -1;
|
---|
| 361 | }
|
---|
| 362 |
|
---|
| 363 | /* determine what max applies too */
|
---|
| 364 | if ((flag & WOLFMEM_IO_POOL) || (flag & WOLFMEM_IO_POOL_FIXED)) {
|
---|
| 365 | heap->maxIO = max;
|
---|
| 366 | }
|
---|
| 367 | else { /* general memory used in handshakes */
|
---|
| 368 | heap->maxHa = max;
|
---|
| 369 | }
|
---|
| 370 |
|
---|
| 371 | heap->flag |= flag;
|
---|
| 372 | *pHint = hint;
|
---|
| 373 |
|
---|
| 374 | (void)max;
|
---|
| 375 |
|
---|
| 376 | return 0;
|
---|
| 377 | }
|
---|
| 378 |
|
---|
| 379 | int wolfSSL_load_static_memory(byte* buffer, word32 sz, int flag,
|
---|
| 380 | WOLFSSL_HEAP* heap)
|
---|
| 381 | {
|
---|
| 382 | word32 ava = sz;
|
---|
| 383 | byte* pt = buffer;
|
---|
| 384 | int ret = 0;
|
---|
| 385 | word32 memSz = (word32)sizeof(wc_Memory);
|
---|
| 386 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 387 |
|
---|
| 388 | WOLFSSL_ENTER("wolfSSL_load_static_memory");
|
---|
| 389 |
|
---|
| 390 | if (buffer == NULL) {
|
---|
| 391 | return BAD_FUNC_ARG;
|
---|
| 392 | }
|
---|
| 393 |
|
---|
| 394 | /* align pt */
|
---|
| 395 | while ((wolfssl_word)pt % WOLFSSL_STATIC_ALIGN && pt < (buffer + sz)) {
|
---|
| 396 | *pt = 0x00;
|
---|
| 397 | pt++;
|
---|
| 398 | ava--;
|
---|
| 399 | }
|
---|
| 400 |
|
---|
| 401 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 402 | printf("Allocated %d bytes for static memory @ %p\n", ava, pt);
|
---|
| 403 | #endif
|
---|
| 404 |
|
---|
| 405 | /* divide into chunks of memory and add them to available list */
|
---|
| 406 | while (ava >= (heap->sizeList[0] + padSz + memSz)) {
|
---|
| 407 | int i;
|
---|
| 408 | /* creating only IO buffers from memory passed in, max TLS is 16k */
|
---|
| 409 | if (flag & WOLFMEM_IO_POOL || flag & WOLFMEM_IO_POOL_FIXED) {
|
---|
| 410 | if ((ret = create_memory_buckets(pt, ava,
|
---|
| 411 | WOLFMEM_IO_SZ, 1, &(heap->io))) < 0) {
|
---|
| 412 | WOLFSSL_LEAVE("wolfSSL_load_static_memory", ret);
|
---|
| 413 | return ret;
|
---|
| 414 | }
|
---|
| 415 |
|
---|
| 416 | /* check if no more room left for creating IO buffers */
|
---|
| 417 | if (ret == 0) {
|
---|
| 418 | break;
|
---|
| 419 | }
|
---|
| 420 |
|
---|
| 421 | /* advance pointer in buffer for next buckets and keep track
|
---|
| 422 | of how much memory is left available */
|
---|
| 423 | pt += ret;
|
---|
| 424 | ava -= ret;
|
---|
| 425 | }
|
---|
| 426 | else {
|
---|
| 427 | /* start at largest and move to smaller buckets */
|
---|
| 428 | for (i = (WOLFMEM_MAX_BUCKETS - 1); i >= 0; i--) {
|
---|
| 429 | if ((heap->sizeList[i] + padSz + memSz) <= ava) {
|
---|
| 430 | if ((ret = create_memory_buckets(pt, ava, heap->sizeList[i],
|
---|
| 431 | heap->distList[i], &(heap->ava[i]))) < 0) {
|
---|
| 432 | WOLFSSL_LEAVE("wolfSSL_load_static_memory", ret);
|
---|
| 433 | return ret;
|
---|
| 434 | }
|
---|
| 435 |
|
---|
| 436 | /* advance pointer in buffer for next buckets and keep track
|
---|
| 437 | of how much memory is left available */
|
---|
| 438 | pt += ret;
|
---|
| 439 | ava -= ret;
|
---|
| 440 | }
|
---|
| 441 | }
|
---|
| 442 | }
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 | return 1;
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 |
|
---|
| 449 | /* returns the size of management memory needed for each bucket.
|
---|
| 450 | * This is memory that is used to keep track of and align memory buckets. */
|
---|
| 451 | int wolfSSL_MemoryPaddingSz(void)
|
---|
| 452 | {
|
---|
| 453 | word32 memSz = (word32)sizeof(wc_Memory);
|
---|
| 454 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 455 | return memSz + padSz;
|
---|
| 456 | }
|
---|
| 457 |
|
---|
| 458 |
|
---|
| 459 | /* Used to calculate memory size for optimum use with buckets.
|
---|
| 460 | returns the suggested size rounded down to the nearest bucket. */
|
---|
| 461 | int wolfSSL_StaticBufferSz(byte* buffer, word32 sz, int flag)
|
---|
| 462 | {
|
---|
| 463 | word32 bucketSz[WOLFMEM_MAX_BUCKETS] = {WOLFMEM_BUCKETS};
|
---|
| 464 | word32 distList[WOLFMEM_MAX_BUCKETS] = {WOLFMEM_DIST};
|
---|
| 465 |
|
---|
| 466 | word32 ava = sz;
|
---|
| 467 | byte* pt = buffer;
|
---|
| 468 | word32 memSz = (word32)sizeof(wc_Memory);
|
---|
| 469 | word32 padSz = -(int)memSz & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 470 |
|
---|
| 471 | WOLFSSL_ENTER("wolfSSL_static_size");
|
---|
| 472 |
|
---|
| 473 | if (buffer == NULL) {
|
---|
| 474 | return BAD_FUNC_ARG;
|
---|
| 475 | }
|
---|
| 476 |
|
---|
| 477 | /* align pt */
|
---|
| 478 | while ((wolfssl_word)pt % WOLFSSL_STATIC_ALIGN && pt < (buffer + sz)) {
|
---|
| 479 | pt++;
|
---|
| 480 | ava--;
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | /* creating only IO buffers from memory passed in, max TLS is 16k */
|
---|
| 484 | if (flag & WOLFMEM_IO_POOL || flag & WOLFMEM_IO_POOL_FIXED) {
|
---|
| 485 | if (ava < (memSz + padSz + WOLFMEM_IO_SZ)) {
|
---|
| 486 | return 0; /* not enough room for even one bucket */
|
---|
| 487 | }
|
---|
| 488 |
|
---|
| 489 | ava = ava % (memSz + padSz + WOLFMEM_IO_SZ);
|
---|
| 490 | }
|
---|
| 491 | else {
|
---|
| 492 | int i, k;
|
---|
| 493 |
|
---|
| 494 | if (ava < (bucketSz[0] + padSz + memSz)) {
|
---|
| 495 | return 0; /* not enough room for even one bucket */
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | while ((ava >= (bucketSz[0] + padSz + memSz)) && (ava > 0)) {
|
---|
| 499 | /* start at largest and move to smaller buckets */
|
---|
| 500 | for (i = (WOLFMEM_MAX_BUCKETS - 1); i >= 0; i--) {
|
---|
| 501 | for (k = distList[i]; k > 0; k--) {
|
---|
| 502 | if ((bucketSz[i] + padSz + memSz) <= ava) {
|
---|
| 503 | ava -= bucketSz[i] + padSz + memSz;
|
---|
| 504 | }
|
---|
| 505 | }
|
---|
| 506 | }
|
---|
| 507 | }
|
---|
| 508 | }
|
---|
| 509 |
|
---|
| 510 | return sz - ava; /* round down */
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 |
|
---|
| 514 | int FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io)
|
---|
| 515 | {
|
---|
| 516 | WOLFSSL_MSG("Freeing fixed IO buffer");
|
---|
| 517 |
|
---|
| 518 | /* check if fixed buffer was set */
|
---|
| 519 | if (*io == NULL) {
|
---|
| 520 | return 1;
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | if (heap == NULL) {
|
---|
| 524 | WOLFSSL_MSG("No heap to return fixed IO too");
|
---|
| 525 | }
|
---|
| 526 | else {
|
---|
| 527 | /* put IO buffer back into IO pool */
|
---|
| 528 | (*io)->next = heap->io;
|
---|
| 529 | heap->io = *io;
|
---|
| 530 | *io = NULL;
|
---|
| 531 | }
|
---|
| 532 |
|
---|
| 533 | return 1;
|
---|
| 534 | }
|
---|
| 535 |
|
---|
| 536 |
|
---|
| 537 | int SetFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io)
|
---|
| 538 | {
|
---|
| 539 | WOLFSSL_MSG("Setting fixed IO for SSL");
|
---|
| 540 | if (heap == NULL) {
|
---|
| 541 | return MEMORY_E;
|
---|
| 542 | }
|
---|
| 543 |
|
---|
| 544 | *io = heap->io;
|
---|
| 545 |
|
---|
| 546 | if (*io != NULL) {
|
---|
| 547 | heap->io = (*io)->next;
|
---|
| 548 | (*io)->next = NULL;
|
---|
| 549 | }
|
---|
| 550 | else { /* failed to grab an IO buffer */
|
---|
| 551 | return 0;
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | return 1;
|
---|
| 555 | }
|
---|
| 556 |
|
---|
| 557 |
|
---|
| 558 | int wolfSSL_GetMemStats(WOLFSSL_HEAP* heap, WOLFSSL_MEM_STATS* stats)
|
---|
| 559 | {
|
---|
| 560 | word32 i;
|
---|
| 561 | wc_Memory* pt;
|
---|
| 562 |
|
---|
| 563 | XMEMSET(stats, 0, sizeof(WOLFSSL_MEM_STATS));
|
---|
| 564 |
|
---|
| 565 | stats->totalAlloc = heap->alloc;
|
---|
| 566 | stats->totalFr = heap->frAlc;
|
---|
| 567 | stats->curAlloc = stats->totalAlloc - stats->totalFr;
|
---|
| 568 | stats->maxHa = heap->maxHa;
|
---|
| 569 | stats->maxIO = heap->maxIO;
|
---|
| 570 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 571 | stats->blockSz[i] = heap->sizeList[i];
|
---|
| 572 | for (pt = heap->ava[i]; pt != NULL; pt = pt->next) {
|
---|
| 573 | stats->avaBlock[i] += 1;
|
---|
| 574 | }
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | for (pt = heap->io; pt != NULL; pt = pt->next) {
|
---|
| 578 | stats->avaIO++;
|
---|
| 579 | }
|
---|
| 580 |
|
---|
| 581 | stats->flag = heap->flag; /* flag used */
|
---|
| 582 |
|
---|
| 583 | return 1;
|
---|
| 584 | }
|
---|
| 585 |
|
---|
| 586 |
|
---|
| 587 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 588 | void* wolfSSL_Malloc(size_t size, void* heap, int type, const char* func, unsigned int line)
|
---|
| 589 | #else
|
---|
| 590 | void* wolfSSL_Malloc(size_t size, void* heap, int type)
|
---|
| 591 | #endif
|
---|
| 592 | {
|
---|
| 593 | void* res = 0;
|
---|
| 594 | wc_Memory* pt = NULL;
|
---|
| 595 | int i;
|
---|
| 596 |
|
---|
| 597 | /* check for testing heap hint was set */
|
---|
| 598 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 599 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 600 | return malloc(size);
|
---|
| 601 | }
|
---|
| 602 | #endif
|
---|
| 603 |
|
---|
| 604 | /* if no heap hint then use dynamic memory*/
|
---|
| 605 | if (heap == NULL) {
|
---|
| 606 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 607 | /* allow using malloc for creating ctx and method */
|
---|
| 608 | if (type == DYNAMIC_TYPE_CTX || type == DYNAMIC_TYPE_METHOD ||
|
---|
| 609 | type == DYNAMIC_TYPE_CERT_MANAGER) {
|
---|
| 610 | WOLFSSL_MSG("ERROR allowing null heap hint for ctx/method\n");
|
---|
| 611 | res = malloc(size);
|
---|
| 612 | }
|
---|
| 613 | else {
|
---|
| 614 | WOLFSSL_MSG("ERROR null heap hint passed into XMALLOC\n");
|
---|
| 615 | res = NULL;
|
---|
| 616 | }
|
---|
| 617 | #else
|
---|
| 618 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 619 | #ifdef FREERTOS
|
---|
| 620 | res = pvPortMalloc(size);
|
---|
| 621 | #else
|
---|
| 622 | res = malloc(size);
|
---|
| 623 | #endif
|
---|
| 624 | #else
|
---|
| 625 | WOLFSSL_MSG("No heap hint found to use and no malloc");
|
---|
| 626 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 627 | printf("ERROR: at %s:%d\n", func, line);
|
---|
| 628 | #endif
|
---|
| 629 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 630 | #endif /* WOLFSSL_HEAP_TEST */
|
---|
| 631 | }
|
---|
| 632 | else {
|
---|
| 633 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 634 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 635 |
|
---|
| 636 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 637 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 638 | return NULL;
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 | /* case of using fixed IO buffers */
|
---|
| 642 | if (mem->flag & WOLFMEM_IO_POOL_FIXED &&
|
---|
| 643 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 644 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 645 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 646 | pt = hint->outBuf;
|
---|
| 647 | }
|
---|
| 648 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 649 | pt = hint->inBuf;
|
---|
| 650 | }
|
---|
| 651 | }
|
---|
| 652 | else {
|
---|
| 653 | /* check if using IO pool flag */
|
---|
| 654 | if (mem->flag & WOLFMEM_IO_POOL &&
|
---|
| 655 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 656 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 657 | if (mem->io != NULL) {
|
---|
| 658 | pt = mem->io;
|
---|
| 659 | mem->io = pt->next;
|
---|
| 660 | }
|
---|
| 661 | }
|
---|
| 662 |
|
---|
| 663 | /* general static memory */
|
---|
| 664 | if (pt == NULL) {
|
---|
| 665 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 666 | if ((word32)size < mem->sizeList[i]) {
|
---|
| 667 | if (mem->ava[i] != NULL) {
|
---|
| 668 | pt = mem->ava[i];
|
---|
| 669 | mem->ava[i] = pt->next;
|
---|
| 670 | break;
|
---|
| 671 | }
|
---|
| 672 | #ifdef WOLFSSL_DEBUG_STATIC_MEMORY
|
---|
| 673 | else {
|
---|
| 674 | printf("Size: %ld, Empty: %d\n", size,
|
---|
| 675 | mem->sizeList[i]);
|
---|
| 676 | }
|
---|
| 677 | #endif
|
---|
| 678 | }
|
---|
| 679 | }
|
---|
| 680 | }
|
---|
| 681 | }
|
---|
| 682 |
|
---|
| 683 | if (pt != NULL) {
|
---|
| 684 | mem->inUse += pt->sz;
|
---|
| 685 | mem->alloc += 1;
|
---|
| 686 | res = pt->buffer;
|
---|
| 687 |
|
---|
| 688 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 689 | printf("Alloc: %p -> %u at %s:%d\n", pt->buffer, pt->sz, func, line);
|
---|
| 690 | #endif
|
---|
| 691 |
|
---|
| 692 | /* keep track of connection statistics if flag is set */
|
---|
| 693 | if (mem->flag & WOLFMEM_TRACK_STATS) {
|
---|
| 694 | WOLFSSL_MEM_CONN_STATS* stats = hint->stats;
|
---|
| 695 | if (stats != NULL) {
|
---|
| 696 | stats->curMem += pt->sz;
|
---|
| 697 | if (stats->peakMem < stats->curMem) {
|
---|
| 698 | stats->peakMem = stats->curMem;
|
---|
| 699 | }
|
---|
| 700 | stats->curAlloc++;
|
---|
| 701 | if (stats->peakAlloc < stats->curAlloc) {
|
---|
| 702 | stats->peakAlloc = stats->curAlloc;
|
---|
| 703 | }
|
---|
| 704 | stats->totalAlloc++;
|
---|
| 705 | }
|
---|
| 706 | }
|
---|
| 707 | }
|
---|
| 708 | else {
|
---|
| 709 | WOLFSSL_MSG("ERROR ran out of static memory");
|
---|
| 710 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 711 | printf("Looking for %lu bytes at %s:%d\n", size, func, line);
|
---|
| 712 | #endif
|
---|
| 713 | }
|
---|
| 714 |
|
---|
| 715 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 716 | }
|
---|
| 717 |
|
---|
| 718 | #ifdef WOLFSSL_MALLOC_CHECK
|
---|
| 719 | if ((wolfssl_word)res % WOLFSSL_STATIC_ALIGN) {
|
---|
| 720 | WOLFSSL_MSG("ERROR memory is not aligned");
|
---|
| 721 | res = NULL;
|
---|
| 722 | }
|
---|
| 723 | #endif
|
---|
| 724 |
|
---|
| 725 |
|
---|
| 726 | (void)i;
|
---|
| 727 | (void)pt;
|
---|
| 728 | (void)type;
|
---|
| 729 |
|
---|
| 730 | return res;
|
---|
| 731 | }
|
---|
| 732 |
|
---|
| 733 |
|
---|
| 734 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 735 | void wolfSSL_Free(void *ptr, void* heap, int type, const char* func, unsigned int line)
|
---|
| 736 | #else
|
---|
| 737 | void wolfSSL_Free(void *ptr, void* heap, int type)
|
---|
| 738 | #endif
|
---|
| 739 | {
|
---|
| 740 | int i;
|
---|
| 741 | wc_Memory* pt;
|
---|
| 742 |
|
---|
| 743 | if (ptr) {
|
---|
| 744 | /* check for testing heap hint was set */
|
---|
| 745 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 746 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 747 | return free(ptr);
|
---|
| 748 | }
|
---|
| 749 | #endif
|
---|
| 750 |
|
---|
| 751 | if (heap == NULL) {
|
---|
| 752 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 753 | /* allow using malloc for creating ctx and method */
|
---|
| 754 | if (type == DYNAMIC_TYPE_CTX || type == DYNAMIC_TYPE_METHOD ||
|
---|
| 755 | type == DYNAMIC_TYPE_CERT_MANAGER) {
|
---|
| 756 | WOLFSSL_MSG("ERROR allowing null heap hint for ctx/method\n");
|
---|
| 757 | }
|
---|
| 758 | else {
|
---|
| 759 | WOLFSSL_MSG("ERROR null heap hint passed into XFREE\n");
|
---|
| 760 | }
|
---|
| 761 | #endif
|
---|
| 762 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 763 | #ifdef FREERTOS
|
---|
| 764 | vPortFree(ptr);
|
---|
| 765 | #else
|
---|
| 766 | free(ptr);
|
---|
| 767 | #endif
|
---|
| 768 | #else
|
---|
| 769 | WOLFSSL_MSG("Error trying to call free when turned off");
|
---|
| 770 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 771 | }
|
---|
| 772 | else {
|
---|
| 773 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 774 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 775 | word32 padSz = -(int)sizeof(wc_Memory) & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 776 |
|
---|
| 777 | /* get memory struct and add it to available list */
|
---|
| 778 | pt = (wc_Memory*)((byte*)ptr - sizeof(wc_Memory) - padSz);
|
---|
| 779 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 780 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 781 | return;
|
---|
| 782 | }
|
---|
| 783 |
|
---|
| 784 | /* case of using fixed IO buffers */
|
---|
| 785 | if (mem->flag & WOLFMEM_IO_POOL_FIXED &&
|
---|
| 786 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 787 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 788 | /* fixed IO pools are free'd at the end of SSL lifetime
|
---|
| 789 | using FreeFixedIO(WOLFSSL_HEAP* heap, wc_Memory** io) */
|
---|
| 790 | }
|
---|
| 791 | else if (mem->flag & WOLFMEM_IO_POOL && pt->sz == WOLFMEM_IO_SZ &&
|
---|
| 792 | (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 793 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 794 | pt->next = mem->io;
|
---|
| 795 | mem->io = pt;
|
---|
| 796 | }
|
---|
| 797 | else { /* general memory free */
|
---|
| 798 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 799 | if (pt->sz == mem->sizeList[i]) {
|
---|
| 800 | pt->next = mem->ava[i];
|
---|
| 801 | mem->ava[i] = pt;
|
---|
| 802 | break;
|
---|
| 803 | }
|
---|
| 804 | }
|
---|
| 805 | }
|
---|
| 806 | mem->inUse -= pt->sz;
|
---|
| 807 | mem->frAlc += 1;
|
---|
| 808 |
|
---|
| 809 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 810 | printf("Free: %p -> %u at %s:%d\n", pt->buffer, pt->sz, func, line);
|
---|
| 811 | #endif
|
---|
| 812 |
|
---|
| 813 | /* keep track of connection statistics if flag is set */
|
---|
| 814 | if (mem->flag & WOLFMEM_TRACK_STATS) {
|
---|
| 815 | WOLFSSL_MEM_CONN_STATS* stats = hint->stats;
|
---|
| 816 | if (stats != NULL) {
|
---|
| 817 | /* avoid under flow */
|
---|
| 818 | if (stats->curMem > pt->sz) {
|
---|
| 819 | stats->curMem -= pt->sz;
|
---|
| 820 | }
|
---|
| 821 | else {
|
---|
| 822 | stats->curMem = 0;
|
---|
| 823 | }
|
---|
| 824 |
|
---|
| 825 | if (stats->curAlloc > 0) {
|
---|
| 826 | stats->curAlloc--;
|
---|
| 827 | }
|
---|
| 828 | stats->totalFr++;
|
---|
| 829 | }
|
---|
| 830 | }
|
---|
| 831 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 832 | }
|
---|
| 833 | }
|
---|
| 834 |
|
---|
| 835 | (void)i;
|
---|
| 836 | (void)pt;
|
---|
| 837 | (void)type;
|
---|
| 838 | }
|
---|
| 839 |
|
---|
| 840 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 841 | void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type, const char* func, unsigned int line)
|
---|
| 842 | #else
|
---|
| 843 | void* wolfSSL_Realloc(void *ptr, size_t size, void* heap, int type)
|
---|
| 844 | #endif
|
---|
| 845 | {
|
---|
| 846 | void* res = 0;
|
---|
| 847 | wc_Memory* pt = NULL;
|
---|
| 848 | word32 prvSz;
|
---|
| 849 | int i;
|
---|
| 850 |
|
---|
| 851 | /* check for testing heap hint was set */
|
---|
| 852 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 853 | if (heap == (void*)WOLFSSL_HEAP_TEST) {
|
---|
| 854 | return realloc(ptr, size);
|
---|
| 855 | }
|
---|
| 856 | #endif
|
---|
| 857 |
|
---|
| 858 | if (heap == NULL) {
|
---|
| 859 | #ifdef WOLFSSL_HEAP_TEST
|
---|
| 860 | WOLFSSL_MSG("ERROR null heap hint passed in to XREALLOC\n");
|
---|
| 861 | #endif
|
---|
| 862 | #ifndef WOLFSSL_NO_MALLOC
|
---|
| 863 | res = realloc(ptr, size);
|
---|
| 864 | #else
|
---|
| 865 | WOLFSSL_MSG("NO heap found to use for realloc");
|
---|
| 866 | #endif /* WOLFSSL_NO_MALLOC */
|
---|
| 867 | }
|
---|
| 868 | else {
|
---|
| 869 | WOLFSSL_HEAP_HINT* hint = (WOLFSSL_HEAP_HINT*)heap;
|
---|
| 870 | WOLFSSL_HEAP* mem = hint->memory;
|
---|
| 871 | word32 padSz = -(int)sizeof(wc_Memory) & (WOLFSSL_STATIC_ALIGN - 1);
|
---|
| 872 |
|
---|
| 873 | if (ptr == NULL) {
|
---|
| 874 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 875 | return wolfSSL_Malloc(size, heap, type, func, line);
|
---|
| 876 | #else
|
---|
| 877 | return wolfSSL_Malloc(size, heap, type);
|
---|
| 878 | #endif
|
---|
| 879 | }
|
---|
| 880 |
|
---|
| 881 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 882 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 883 | return NULL;
|
---|
| 884 | }
|
---|
| 885 |
|
---|
| 886 | /* case of using fixed IO buffers or IO pool */
|
---|
| 887 | if (((mem->flag & WOLFMEM_IO_POOL)||(mem->flag & WOLFMEM_IO_POOL_FIXED))
|
---|
| 888 | && (type == DYNAMIC_TYPE_OUT_BUFFER ||
|
---|
| 889 | type == DYNAMIC_TYPE_IN_BUFFER)) {
|
---|
| 890 | /* no realloc, is fixed size */
|
---|
| 891 | pt = (wc_Memory*)((byte*)ptr - padSz - sizeof(wc_Memory));
|
---|
| 892 | if (pt->sz < size) {
|
---|
| 893 | WOLFSSL_MSG("Error IO memory was not large enough");
|
---|
| 894 | res = NULL; /* return NULL in error case */
|
---|
| 895 | }
|
---|
| 896 | res = pt->buffer;
|
---|
| 897 | }
|
---|
| 898 | else {
|
---|
| 899 | /* general memory */
|
---|
| 900 | for (i = 0; i < WOLFMEM_MAX_BUCKETS; i++) {
|
---|
| 901 | if ((word32)size < mem->sizeList[i]) {
|
---|
| 902 | if (mem->ava[i] != NULL) {
|
---|
| 903 | pt = mem->ava[i];
|
---|
| 904 | mem->ava[i] = pt->next;
|
---|
| 905 | break;
|
---|
| 906 | }
|
---|
| 907 | }
|
---|
| 908 | }
|
---|
| 909 |
|
---|
| 910 | if (pt != NULL && res == NULL) {
|
---|
| 911 | res = pt->buffer;
|
---|
| 912 |
|
---|
| 913 | /* copy over original information and free ptr */
|
---|
| 914 | prvSz = ((wc_Memory*)((byte*)ptr - padSz -
|
---|
| 915 | sizeof(wc_Memory)))->sz;
|
---|
| 916 | prvSz = (prvSz > pt->sz)? pt->sz: prvSz;
|
---|
| 917 | XMEMCPY(pt->buffer, ptr, prvSz);
|
---|
| 918 | mem->inUse += pt->sz;
|
---|
| 919 | mem->alloc += 1;
|
---|
| 920 |
|
---|
| 921 | /* free memory that was previously being used */
|
---|
| 922 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 923 | wolfSSL_Free(ptr, heap, type
|
---|
| 924 | #ifdef WOLFSSL_DEBUG_MEMORY
|
---|
| 925 | , func, line
|
---|
| 926 | #endif
|
---|
| 927 | );
|
---|
| 928 | if (wc_LockMutex(&(mem->memory_mutex)) != 0) {
|
---|
| 929 | WOLFSSL_MSG("Bad memory_mutex lock");
|
---|
| 930 | return NULL;
|
---|
| 931 | }
|
---|
| 932 | }
|
---|
| 933 | }
|
---|
| 934 | wc_UnLockMutex(&(mem->memory_mutex));
|
---|
| 935 | }
|
---|
| 936 |
|
---|
| 937 | #ifdef WOLFSSL_MALLOC_CHECK
|
---|
| 938 | if ((wolfssl_word)res % WOLFSSL_STATIC_ALIGN) {
|
---|
| 939 | WOLFSSL_MSG("ERROR memory is not aligned");
|
---|
| 940 | res = NULL;
|
---|
| 941 | }
|
---|
| 942 | #endif
|
---|
| 943 |
|
---|
| 944 | (void)i;
|
---|
| 945 | (void)pt;
|
---|
| 946 | (void)type;
|
---|
| 947 |
|
---|
| 948 | return res;
|
---|
| 949 | }
|
---|
| 950 | #endif /* WOLFSSL_STATIC_MEMORY */
|
---|
| 951 |
|
---|
| 952 | #endif /* USE_WOLFSSL_MEMORY */
|
---|
| 953 |
|
---|
| 954 |
|
---|
| 955 | #ifdef HAVE_IO_POOL
|
---|
| 956 |
|
---|
| 957 | /* Example for user io pool, shared build may need definitions in lib proper */
|
---|
| 958 |
|
---|
| 959 | #include <wolfssl/wolfcrypt/types.h>
|
---|
| 960 | #include <stdlib.h>
|
---|
| 961 |
|
---|
| 962 | #ifndef HAVE_THREAD_LS
|
---|
| 963 | #error "Oops, simple I/O pool example needs thread local storage"
|
---|
| 964 | #endif
|
---|
| 965 |
|
---|
| 966 |
|
---|
| 967 | /* allow simple per thread in and out pools */
|
---|
| 968 | /* use 17k size since max record size is 16k plus overhead */
|
---|
| 969 | static THREAD_LS_T byte pool_in[17*1024];
|
---|
| 970 | static THREAD_LS_T byte pool_out[17*1024];
|
---|
| 971 |
|
---|
| 972 |
|
---|
| 973 | void* XMALLOC(size_t n, void* heap, int type)
|
---|
| 974 | {
|
---|
| 975 | (void)heap;
|
---|
| 976 |
|
---|
| 977 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 978 | if (n < sizeof(pool_in))
|
---|
| 979 | return pool_in;
|
---|
| 980 | else
|
---|
| 981 | return NULL;
|
---|
| 982 | }
|
---|
| 983 |
|
---|
| 984 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 985 | if (n < sizeof(pool_out))
|
---|
| 986 | return pool_out;
|
---|
| 987 | else
|
---|
| 988 | return NULL;
|
---|
| 989 | }
|
---|
| 990 |
|
---|
| 991 | return malloc(n);
|
---|
| 992 | }
|
---|
| 993 |
|
---|
| 994 | void* XREALLOC(void *p, size_t n, void* heap, int type)
|
---|
| 995 | {
|
---|
| 996 | (void)heap;
|
---|
| 997 |
|
---|
| 998 | if (type == DYNAMIC_TYPE_IN_BUFFER) {
|
---|
| 999 | if (n < sizeof(pool_in))
|
---|
| 1000 | return pool_in;
|
---|
| 1001 | else
|
---|
| 1002 | return NULL;
|
---|
| 1003 | }
|
---|
| 1004 |
|
---|
| 1005 | if (type == DYNAMIC_TYPE_OUT_BUFFER) {
|
---|
| 1006 | if (n < sizeof(pool_out))
|
---|
| 1007 | return pool_out;
|
---|
| 1008 | else
|
---|
| 1009 | return NULL;
|
---|
| 1010 | }
|
---|
| 1011 |
|
---|
| 1012 | return realloc(p, n);
|
---|
| 1013 | }
|
---|
| 1014 |
|
---|
| 1015 | void XFREE(void *p, void* heap, int type)
|
---|
| 1016 | {
|
---|
| 1017 | (void)heap;
|
---|
| 1018 |
|
---|
| 1019 | if (type == DYNAMIC_TYPE_IN_BUFFER)
|
---|
| 1020 | return; /* do nothing, static pool */
|
---|
| 1021 |
|
---|
| 1022 | if (type == DYNAMIC_TYPE_OUT_BUFFER)
|
---|
| 1023 | return; /* do nothing, static pool */
|
---|
| 1024 |
|
---|
| 1025 | free(p);
|
---|
| 1026 | }
|
---|
| 1027 |
|
---|
| 1028 | #endif /* HAVE_IO_POOL */
|
---|
| 1029 |
|
---|
| 1030 | #ifdef WOLFSSL_MEMORY_LOG
|
---|
| 1031 | void *xmalloc(size_t n, void* heap, int type, const char* func,
|
---|
| 1032 | const char* file, unsigned int line)
|
---|
| 1033 | {
|
---|
| 1034 | void* p;
|
---|
| 1035 | word32* p32;
|
---|
| 1036 |
|
---|
| 1037 | if (malloc_function)
|
---|
| 1038 | p32 = malloc_function(n + sizeof(word32) * 4);
|
---|
| 1039 | else
|
---|
| 1040 | p32 = malloc(n + sizeof(word32) * 4);
|
---|
| 1041 |
|
---|
| 1042 | p32[0] = (word32)n;
|
---|
| 1043 | p = (void*)(p32 + 4);
|
---|
| 1044 |
|
---|
| 1045 | fprintf(stderr, "Alloc: %p -> %u (%d) at %s:%s:%u\n", p, (word32)n, type,
|
---|
| 1046 | func, file, line);
|
---|
| 1047 |
|
---|
| 1048 | (void)heap;
|
---|
| 1049 |
|
---|
| 1050 | return p;
|
---|
| 1051 | }
|
---|
| 1052 | void *xrealloc(void *p, size_t n, void* heap, int type, const char* func,
|
---|
| 1053 | const char* file, unsigned int line)
|
---|
| 1054 | {
|
---|
| 1055 | void* newp = NULL;
|
---|
| 1056 | word32* p32;
|
---|
| 1057 | word32* oldp32 = NULL;
|
---|
| 1058 | word32 oldLen;
|
---|
| 1059 |
|
---|
| 1060 | if (p != NULL) {
|
---|
| 1061 | oldp32 = (word32*)p;
|
---|
| 1062 | oldp32 -= 4;
|
---|
| 1063 | oldLen = oldp32[0];
|
---|
| 1064 | }
|
---|
| 1065 |
|
---|
| 1066 | if (realloc_function)
|
---|
| 1067 | p32 = realloc_function(oldp32, n + sizeof(word32) * 4);
|
---|
| 1068 | else
|
---|
| 1069 | p32 = realloc(oldp32, n + sizeof(word32) * 4);
|
---|
| 1070 |
|
---|
| 1071 | if (p32 != NULL) {
|
---|
| 1072 | p32[0] = (word32)n;
|
---|
| 1073 | newp = (void*)(p32 + 4);
|
---|
| 1074 |
|
---|
| 1075 | fprintf(stderr, "Alloc: %p -> %u (%d) at %s:%s:%u\n", newp, (word32)n,
|
---|
| 1076 | type, func, file, line);
|
---|
| 1077 | if (p != NULL) {
|
---|
| 1078 | fprintf(stderr, "Free: %p -> %u (%d) at %s:%s:%u\n", p, oldLen,
|
---|
| 1079 | type, func, file, line);
|
---|
| 1080 | }
|
---|
| 1081 | }
|
---|
| 1082 |
|
---|
| 1083 | (void)heap;
|
---|
| 1084 |
|
---|
| 1085 | return newp;
|
---|
| 1086 | }
|
---|
| 1087 | void xfree(void *p, void* heap, int type, const char* func, const char* file,
|
---|
| 1088 | unsigned int line)
|
---|
| 1089 | {
|
---|
| 1090 | word32* p32 = (word32*)p;
|
---|
| 1091 |
|
---|
| 1092 | if (p != NULL) {
|
---|
| 1093 | p32 -= 4;
|
---|
| 1094 |
|
---|
| 1095 | fprintf(stderr, "Free: %p -> %u (%d) at %s:%s:%u\n", p, p32[0], type,
|
---|
| 1096 | func, file, line);
|
---|
| 1097 |
|
---|
| 1098 | if (free_function)
|
---|
| 1099 | free_function(p32);
|
---|
| 1100 | else
|
---|
| 1101 | free(p32);
|
---|
| 1102 | }
|
---|
| 1103 |
|
---|
| 1104 | (void)heap;
|
---|
| 1105 | }
|
---|
| 1106 | #endif /* WOLFSSL_MEMORY_LOG */
|
---|
| 1107 |
|
---|
| 1108 | #ifdef WOLFSSL_STACK_LOG
|
---|
| 1109 | /* Note: this code only works with GCC using -finstrument-functions. */
|
---|
| 1110 | void __attribute__((no_instrument_function))
|
---|
| 1111 | __cyg_profile_func_enter(void *func, void *caller)
|
---|
| 1112 | {
|
---|
| 1113 | register void* sp asm("sp");
|
---|
| 1114 | fprintf(stderr, "ENTER: %016lx %p\n", (unsigned long)(size_t)func, sp);
|
---|
| 1115 | (void)caller;
|
---|
| 1116 | }
|
---|
| 1117 |
|
---|
| 1118 | void __attribute__((no_instrument_function))
|
---|
| 1119 | __cyg_profile_func_exit(void *func, void *caller)
|
---|
| 1120 | {
|
---|
| 1121 | register void* sp asm("sp");
|
---|
| 1122 | fprintf(stderr, "EXIT: %016lx %p\n", (unsigned long)(size_t)func, sp);
|
---|
| 1123 | (void)caller;
|
---|
| 1124 | }
|
---|
| 1125 | #endif
|
---|
| 1126 |
|
---|