[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <stdlib.h>
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| 12 | #include <time.h>
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| 13 | #include "internal/cryptlib.h"
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| 14 | #include "internal/thread_once.h"
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| 15 | #include <openssl/crypto.h>
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| 16 | #include <openssl/buffer.h>
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| 17 | #include "internal/bio.h"
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| 18 | #include <openssl/lhash.h>
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| 19 |
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| 20 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
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| 21 | # include <execinfo.h>
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| 22 | #endif
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| 23 |
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| 24 | /*
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| 25 | * The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE when
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| 26 | * the application asks for it (usually after library initialisation for
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| 27 | * which no book-keeping is desired). State CRYPTO_MEM_CHECK_ON exists only
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| 28 | * temporarily when the library thinks that certain allocations should not be
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| 29 | * checked (e.g. the data structures used for memory checking). It is not
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| 30 | * suitable as an initial state: the library will unexpectedly enable memory
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| 31 | * checking when it executes one of those sections that want to disable
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| 32 | * checking temporarily. State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes
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| 33 | * no sense whatsoever.
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| 34 | */
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| 35 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG
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| 36 | static int mh_mode = CRYPTO_MEM_CHECK_OFF;
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| 37 | #endif
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| 38 |
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| 39 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG
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| 40 | static unsigned long order = 0; /* number of memory requests */
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| 41 |
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| 42 | /*-
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| 43 | * For application-defined information (static C-string `info')
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| 44 | * to be displayed in memory leak list.
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| 45 | * Each thread has its own stack. For applications, there is
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| 46 | * OPENSSL_mem_debug_push("...") to push an entry,
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| 47 | * OPENSSL_mem_debug_pop() to pop an entry,
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| 48 | */
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| 49 | struct app_mem_info_st {
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| 50 | CRYPTO_THREAD_ID threadid;
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| 51 | const char *file;
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| 52 | int line;
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| 53 | const char *info;
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| 54 | struct app_mem_info_st *next; /* tail of thread's stack */
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| 55 | int references;
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| 56 | };
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| 57 |
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| 58 | static CRYPTO_ONCE memdbg_init = CRYPTO_ONCE_STATIC_INIT;
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| 59 | static CRYPTO_RWLOCK *malloc_lock = NULL;
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| 60 | static CRYPTO_RWLOCK *long_malloc_lock = NULL;
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| 61 | static CRYPTO_THREAD_LOCAL appinfokey;
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| 62 |
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| 63 | /* memory-block description */
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| 64 | struct mem_st {
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| 65 | void *addr;
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| 66 | int num;
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| 67 | const char *file;
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| 68 | int line;
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| 69 | CRYPTO_THREAD_ID threadid;
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| 70 | unsigned long order;
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| 71 | time_t time;
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| 72 | APP_INFO *app_info;
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| 73 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
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| 74 | void *array[30];
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| 75 | size_t array_siz;
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| 76 | #endif
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| 77 | };
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| 78 |
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| 79 | static LHASH_OF(MEM) *mh = NULL; /* hash-table of memory requests (address as
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| 80 | * key); access requires MALLOC2 lock */
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| 81 |
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| 82 | /* num_disable > 0 iff mh_mode == CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE) */
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| 83 | static unsigned int num_disable = 0;
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| 84 |
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| 85 | /*
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| 86 | * Valid iff num_disable > 0. long_malloc_lock is locked exactly in this
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| 87 | * case (by the thread named in disabling_thread).
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| 88 | */
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| 89 | static CRYPTO_THREAD_ID disabling_threadid;
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| 90 |
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| 91 | DEFINE_RUN_ONCE_STATIC(do_memdbg_init)
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| 92 | {
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| 93 | malloc_lock = CRYPTO_THREAD_lock_new();
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| 94 | long_malloc_lock = CRYPTO_THREAD_lock_new();
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| 95 | if (malloc_lock == NULL || long_malloc_lock == NULL
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| 96 | || !CRYPTO_THREAD_init_local(&appinfokey, NULL)) {
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| 97 | CRYPTO_THREAD_lock_free(malloc_lock);
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| 98 | malloc_lock = NULL;
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| 99 | CRYPTO_THREAD_lock_free(long_malloc_lock);
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| 100 | long_malloc_lock = NULL;
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| 101 | return 0;
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| 102 | }
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| 103 | return 1;
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| 104 | }
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| 105 |
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| 106 | static void app_info_free(APP_INFO *inf)
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| 107 | {
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| 108 | if (!inf)
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| 109 | return;
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| 110 | if (--(inf->references) <= 0) {
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| 111 | app_info_free(inf->next);
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| 112 | OPENSSL_free(inf);
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| 113 | }
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| 114 | }
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| 115 | #endif
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| 116 |
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| 117 | int CRYPTO_mem_ctrl(int mode)
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| 118 | {
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| 119 | #ifdef OPENSSL_NO_CRYPTO_MDEBUG
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| 120 | return mode - mode;
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| 121 | #else
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| 122 | int ret = mh_mode;
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| 123 |
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| 124 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
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| 125 | return -1;
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| 126 |
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| 127 | CRYPTO_THREAD_write_lock(malloc_lock);
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| 128 | switch (mode) {
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| 129 | default:
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| 130 | break;
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| 131 |
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| 132 | case CRYPTO_MEM_CHECK_ON:
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| 133 | mh_mode = CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE;
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| 134 | num_disable = 0;
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| 135 | break;
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| 136 |
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| 137 | case CRYPTO_MEM_CHECK_OFF:
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| 138 | mh_mode = 0;
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| 139 | num_disable = 0;
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| 140 | break;
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| 141 |
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| 142 | /* switch off temporarily (for library-internal use): */
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| 143 | case CRYPTO_MEM_CHECK_DISABLE:
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| 144 | if (mh_mode & CRYPTO_MEM_CHECK_ON) {
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| 145 | CRYPTO_THREAD_ID cur = CRYPTO_THREAD_get_current_id();
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| 146 | /* see if we don't have long_malloc_lock already */
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| 147 | if (!num_disable
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| 148 | || !CRYPTO_THREAD_compare_id(disabling_threadid, cur)) {
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| 149 | /*
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| 150 | * Long-time lock long_malloc_lock must not be claimed
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| 151 | * while we're holding malloc_lock, or we'll deadlock
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| 152 | * if somebody else holds long_malloc_lock (and cannot
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| 153 | * release it because we block entry to this function). Give
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| 154 | * them a chance, first, and then claim the locks in
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| 155 | * appropriate order (long-time lock first).
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| 156 | */
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| 157 | CRYPTO_THREAD_unlock(malloc_lock);
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| 158 | /*
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| 159 | * Note that after we have waited for long_malloc_lock and
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| 160 | * malloc_lock, we'll still be in the right "case" and
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| 161 | * "if" branch because MemCheck_start and MemCheck_stop may
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| 162 | * never be used while there are multiple OpenSSL threads.
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| 163 | */
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| 164 | CRYPTO_THREAD_write_lock(long_malloc_lock);
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| 165 | CRYPTO_THREAD_write_lock(malloc_lock);
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| 166 | mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;
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| 167 | disabling_threadid = cur;
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| 168 | }
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| 169 | num_disable++;
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| 170 | }
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| 171 | break;
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| 172 |
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| 173 | case CRYPTO_MEM_CHECK_ENABLE:
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| 174 | if (mh_mode & CRYPTO_MEM_CHECK_ON) {
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| 175 | if (num_disable) { /* always true, or something is going wrong */
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| 176 | num_disable--;
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| 177 | if (num_disable == 0) {
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| 178 | mh_mode |= CRYPTO_MEM_CHECK_ENABLE;
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| 179 | CRYPTO_THREAD_unlock(long_malloc_lock);
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| 180 | }
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| 181 | }
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| 182 | }
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| 183 | break;
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| 184 | }
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| 185 | CRYPTO_THREAD_unlock(malloc_lock);
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| 186 | return (ret);
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| 187 | #endif
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| 188 | }
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| 189 |
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| 190 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG
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| 191 |
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| 192 | static int mem_check_on(void)
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| 193 | {
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| 194 | int ret = 0;
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| 195 | CRYPTO_THREAD_ID cur;
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| 196 |
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| 197 | if (mh_mode & CRYPTO_MEM_CHECK_ON) {
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| 198 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
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| 199 | return 0;
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| 200 |
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| 201 | cur = CRYPTO_THREAD_get_current_id();
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| 202 | CRYPTO_THREAD_read_lock(malloc_lock);
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| 203 |
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| 204 | ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
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| 205 | || !CRYPTO_THREAD_compare_id(disabling_threadid, cur);
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| 206 |
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| 207 | CRYPTO_THREAD_unlock(malloc_lock);
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| 208 | }
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| 209 | return (ret);
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| 210 | }
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| 211 |
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| 212 | static int mem_cmp(const MEM *a, const MEM *b)
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| 213 | {
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| 214 | #ifdef _WIN64
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| 215 | const char *ap = (const char *)a->addr, *bp = (const char *)b->addr;
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| 216 | if (ap == bp)
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| 217 | return 0;
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| 218 | else if (ap > bp)
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| 219 | return 1;
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| 220 | else
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| 221 | return -1;
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| 222 | #else
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| 223 | return (const char *)a->addr - (const char *)b->addr;
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| 224 | #endif
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| 225 | }
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| 226 |
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| 227 | static unsigned long mem_hash(const MEM *a)
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| 228 | {
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| 229 | size_t ret;
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| 230 |
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| 231 | ret = (size_t)a->addr;
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| 232 |
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| 233 | ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;
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| 234 | return (ret);
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| 235 | }
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| 236 |
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| 237 | /* returns 1 if there was an info to pop, 0 if the stack was empty. */
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| 238 | static int pop_info(void)
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| 239 | {
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| 240 | APP_INFO *current = NULL;
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| 241 |
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| 242 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
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| 243 | return 0;
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| 244 |
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| 245 | current = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
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| 246 | if (current != NULL) {
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| 247 | APP_INFO *next = current->next;
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| 248 |
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| 249 | if (next != NULL) {
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| 250 | next->references++;
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| 251 | CRYPTO_THREAD_set_local(&appinfokey, next);
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| 252 | } else {
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| 253 | CRYPTO_THREAD_set_local(&appinfokey, NULL);
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| 254 | }
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| 255 | if (--(current->references) <= 0) {
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| 256 | current->next = NULL;
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| 257 | if (next != NULL)
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| 258 | next->references--;
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| 259 | OPENSSL_free(current);
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| 260 | }
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| 261 | return 1;
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| 262 | }
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| 263 | return 0;
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| 264 | }
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| 265 |
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| 266 | int CRYPTO_mem_debug_push(const char *info, const char *file, int line)
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| 267 | {
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| 268 | APP_INFO *ami, *amim;
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| 269 | int ret = 0;
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| 270 |
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| 271 | if (mem_check_on()) {
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| 272 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
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| 273 |
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| 274 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
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| 275 | || (ami = OPENSSL_malloc(sizeof(*ami))) == NULL)
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| 276 | goto err;
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| 277 |
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| 278 | ami->threadid = CRYPTO_THREAD_get_current_id();
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| 279 | ami->file = file;
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| 280 | ami->line = line;
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| 281 | ami->info = info;
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| 282 | ami->references = 1;
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| 283 | ami->next = NULL;
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| 284 |
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| 285 | amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
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| 286 | CRYPTO_THREAD_set_local(&appinfokey, ami);
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| 287 |
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| 288 | if (amim != NULL)
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| 289 | ami->next = amim;
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| 290 | ret = 1;
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| 291 | err:
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| 292 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 293 | }
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| 294 |
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| 295 | return (ret);
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| 296 | }
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| 297 |
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| 298 | int CRYPTO_mem_debug_pop(void)
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| 299 | {
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| 300 | int ret = 0;
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| 301 |
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| 302 | if (mem_check_on()) {
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| 303 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
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| 304 | ret = pop_info();
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| 305 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 306 | }
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| 307 | return (ret);
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| 308 | }
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| 309 |
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| 310 | static unsigned long break_order_num = 0;
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| 311 |
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| 312 | void CRYPTO_mem_debug_malloc(void *addr, size_t num, int before_p,
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| 313 | const char *file, int line)
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| 314 | {
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| 315 | MEM *m, *mm;
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| 316 | APP_INFO *amim;
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| 317 |
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| 318 | switch (before_p & 127) {
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| 319 | case 0:
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| 320 | break;
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| 321 | case 1:
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| 322 | if (addr == NULL)
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| 323 | break;
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| 324 |
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| 325 | if (mem_check_on()) {
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| 326 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
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| 327 |
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| 328 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
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| 329 | || (m = OPENSSL_malloc(sizeof(*m))) == NULL) {
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| 330 | OPENSSL_free(addr);
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| 331 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 332 | return;
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| 333 | }
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| 334 | if (mh == NULL) {
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| 335 | if ((mh = lh_MEM_new(mem_hash, mem_cmp)) == NULL) {
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| 336 | OPENSSL_free(addr);
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| 337 | OPENSSL_free(m);
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| 338 | addr = NULL;
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| 339 | goto err;
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| 340 | }
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| 341 | }
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| 342 |
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| 343 | m->addr = addr;
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| 344 | m->file = file;
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| 345 | m->line = line;
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| 346 | m->num = num;
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| 347 | m->threadid = CRYPTO_THREAD_get_current_id();
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| 348 |
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| 349 | if (order == break_order_num) {
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| 350 | /* BREAK HERE */
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| 351 | m->order = order;
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| 352 | }
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| 353 | m->order = order++;
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| 354 | # ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
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| 355 | m->array_siz = backtrace(m->array, OSSL_NELEM(m->array));
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| 356 | # endif
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| 357 | m->time = time(NULL);
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| 358 |
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| 359 | amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
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| 360 | m->app_info = amim;
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| 361 | if (amim != NULL)
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| 362 | amim->references++;
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| 363 |
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| 364 | if ((mm = lh_MEM_insert(mh, m)) != NULL) {
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| 365 | /* Not good, but don't sweat it */
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| 366 | if (mm->app_info != NULL) {
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| 367 | mm->app_info->references--;
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| 368 | }
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| 369 | OPENSSL_free(mm);
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| 370 | }
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| 371 | err:
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| 372 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 373 | }
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| 374 | break;
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| 375 | }
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| 376 | return;
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| 377 | }
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| 378 |
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| 379 | void CRYPTO_mem_debug_free(void *addr, int before_p,
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| 380 | const char *file, int line)
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| 381 | {
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| 382 | MEM m, *mp;
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| 383 |
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| 384 | switch (before_p) {
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| 385 | case 0:
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| 386 | if (addr == NULL)
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| 387 | break;
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| 388 |
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| 389 | if (mem_check_on() && (mh != NULL)) {
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| 390 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
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| 391 |
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| 392 | m.addr = addr;
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| 393 | mp = lh_MEM_delete(mh, &m);
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| 394 | if (mp != NULL) {
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| 395 | app_info_free(mp->app_info);
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| 396 | OPENSSL_free(mp);
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| 397 | }
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| 398 |
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| 399 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 400 | }
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| 401 | break;
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| 402 | case 1:
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| 403 | break;
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| 404 | }
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| 405 | }
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| 406 |
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| 407 | void CRYPTO_mem_debug_realloc(void *addr1, void *addr2, size_t num,
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| 408 | int before_p, const char *file, int line)
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| 409 | {
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| 410 | MEM m, *mp;
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| 411 |
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| 412 | switch (before_p) {
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| 413 | case 0:
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| 414 | break;
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| 415 | case 1:
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| 416 | if (addr2 == NULL)
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| 417 | break;
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| 418 |
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| 419 | if (addr1 == NULL) {
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| 420 | CRYPTO_mem_debug_malloc(addr2, num, 128 | before_p, file, line);
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| 421 | break;
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| 422 | }
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| 423 |
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| 424 | if (mem_check_on()) {
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| 425 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
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| 426 |
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| 427 | m.addr = addr1;
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| 428 | mp = lh_MEM_delete(mh, &m);
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| 429 | if (mp != NULL) {
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| 430 | mp->addr = addr2;
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| 431 | mp->num = num;
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| 432 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
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| 433 | mp->array_siz = backtrace(mp->array, OSSL_NELEM(mp->array));
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| 434 | #endif
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| 435 | (void)lh_MEM_insert(mh, mp);
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| 436 | }
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| 437 |
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| 438 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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| 439 | }
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| 440 | break;
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| 441 | }
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| 442 | return;
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| 443 | }
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| 444 |
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| 445 | typedef struct mem_leak_st {
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| 446 | BIO *bio;
|
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| 447 | int chunks;
|
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| 448 | long bytes;
|
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| 449 | } MEM_LEAK;
|
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| 450 |
|
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| 451 | static void print_leak(const MEM *m, MEM_LEAK *l)
|
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| 452 | {
|
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| 453 | char buf[1024];
|
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| 454 | char *bufp = buf;
|
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| 455 | APP_INFO *amip;
|
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| 456 | int ami_cnt;
|
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| 457 | struct tm *lcl = NULL;
|
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| 458 | /*
|
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| 459 | * Convert between CRYPTO_THREAD_ID (which could be anything at all) and
|
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| 460 | * a long. This may not be meaningful depending on what CRYPTO_THREAD_ID is
|
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| 461 | * but hopefully should give something sensible on most platforms
|
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| 462 | */
|
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| 463 | union {
|
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| 464 | CRYPTO_THREAD_ID tid;
|
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| 465 | unsigned long ltid;
|
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| 466 | } tid;
|
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| 467 | CRYPTO_THREAD_ID ti;
|
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| 468 |
|
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| 469 | #define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))
|
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| 470 |
|
---|
| 471 | lcl = localtime(&m->time);
|
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| 472 | BIO_snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
|
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| 473 | lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
|
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| 474 | bufp += strlen(bufp);
|
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| 475 |
|
---|
| 476 | BIO_snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
|
---|
| 477 | m->order, m->file, m->line);
|
---|
| 478 | bufp += strlen(bufp);
|
---|
| 479 |
|
---|
| 480 | tid.ltid = 0;
|
---|
| 481 | tid.tid = m->threadid;
|
---|
| 482 | BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ", tid.ltid);
|
---|
| 483 | bufp += strlen(bufp);
|
---|
| 484 |
|
---|
| 485 | BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%p\n",
|
---|
| 486 | m->num, m->addr);
|
---|
| 487 | bufp += strlen(bufp);
|
---|
| 488 |
|
---|
| 489 | BIO_puts(l->bio, buf);
|
---|
| 490 |
|
---|
| 491 | l->chunks++;
|
---|
| 492 | l->bytes += m->num;
|
---|
| 493 |
|
---|
| 494 | amip = m->app_info;
|
---|
| 495 | ami_cnt = 0;
|
---|
| 496 |
|
---|
| 497 | if (amip) {
|
---|
| 498 | ti = amip->threadid;
|
---|
| 499 |
|
---|
| 500 | do {
|
---|
| 501 | int buf_len;
|
---|
| 502 | int info_len;
|
---|
| 503 |
|
---|
| 504 | ami_cnt++;
|
---|
| 505 | memset(buf, '>', ami_cnt);
|
---|
| 506 | tid.ltid = 0;
|
---|
| 507 | tid.tid = amip->threadid;
|
---|
| 508 | BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt,
|
---|
| 509 | " thread=%lu, file=%s, line=%d, info=\"",
|
---|
| 510 | tid.ltid, amip->file,
|
---|
| 511 | amip->line);
|
---|
| 512 | buf_len = strlen(buf);
|
---|
| 513 | info_len = strlen(amip->info);
|
---|
| 514 | if (128 - buf_len - 3 < info_len) {
|
---|
| 515 | memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);
|
---|
| 516 | buf_len = 128 - 3;
|
---|
| 517 | } else {
|
---|
| 518 | OPENSSL_strlcpy(buf + buf_len, amip->info, sizeof buf - buf_len);
|
---|
| 519 | buf_len = strlen(buf);
|
---|
| 520 | }
|
---|
| 521 | BIO_snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n");
|
---|
| 522 |
|
---|
| 523 | BIO_puts(l->bio, buf);
|
---|
| 524 |
|
---|
| 525 | amip = amip->next;
|
---|
| 526 | }
|
---|
| 527 | while (amip && CRYPTO_THREAD_compare_id(amip->threadid, ti));
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
|
---|
| 531 | {
|
---|
| 532 | size_t i;
|
---|
| 533 | char **strings = backtrace_symbols(m->array, m->array_siz);
|
---|
| 534 |
|
---|
| 535 | for (i = 0; i < m->array_siz; i++)
|
---|
| 536 | fprintf(stderr, "##> %s\n", strings[i]);
|
---|
| 537 | free(strings);
|
---|
| 538 | }
|
---|
| 539 | #endif
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | IMPLEMENT_LHASH_DOALL_ARG_CONST(MEM, MEM_LEAK);
|
---|
| 543 |
|
---|
| 544 | int CRYPTO_mem_leaks(BIO *b)
|
---|
| 545 | {
|
---|
| 546 | MEM_LEAK ml;
|
---|
| 547 |
|
---|
| 548 | /*
|
---|
| 549 | * OPENSSL_cleanup() will free the ex_data locks so we can't have any
|
---|
| 550 | * ex_data hanging around
|
---|
| 551 | */
|
---|
| 552 | bio_free_ex_data(b);
|
---|
| 553 |
|
---|
| 554 | /* Ensure all resources are released */
|
---|
| 555 | OPENSSL_cleanup();
|
---|
| 556 |
|
---|
| 557 | if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
|
---|
| 558 | return -1;
|
---|
| 559 |
|
---|
| 560 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
|
---|
| 561 |
|
---|
| 562 | ml.bio = b;
|
---|
| 563 | ml.bytes = 0;
|
---|
| 564 | ml.chunks = 0;
|
---|
| 565 | if (mh != NULL)
|
---|
| 566 | lh_MEM_doall_MEM_LEAK(mh, print_leak, &ml);
|
---|
| 567 |
|
---|
| 568 | if (ml.chunks != 0) {
|
---|
| 569 | BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks);
|
---|
| 570 | } else {
|
---|
| 571 | /*
|
---|
| 572 | * Make sure that, if we found no leaks, memory-leak debugging itself
|
---|
| 573 | * does not introduce memory leaks (which might irritate external
|
---|
| 574 | * debugging tools). (When someone enables leak checking, but does not
|
---|
| 575 | * call this function, we declare it to be their fault.)
|
---|
| 576 | */
|
---|
| 577 | int old_mh_mode;
|
---|
| 578 |
|
---|
| 579 | CRYPTO_THREAD_write_lock(malloc_lock);
|
---|
| 580 |
|
---|
| 581 | /*
|
---|
| 582 | * avoid deadlock when lh_free() uses CRYPTO_mem_debug_free(), which uses
|
---|
| 583 | * mem_check_on
|
---|
| 584 | */
|
---|
| 585 | old_mh_mode = mh_mode;
|
---|
| 586 | mh_mode = CRYPTO_MEM_CHECK_OFF;
|
---|
| 587 |
|
---|
| 588 | lh_MEM_free(mh);
|
---|
| 589 | mh = NULL;
|
---|
| 590 |
|
---|
| 591 | mh_mode = old_mh_mode;
|
---|
| 592 | CRYPTO_THREAD_unlock(malloc_lock);
|
---|
| 593 | }
|
---|
| 594 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF);
|
---|
| 595 |
|
---|
| 596 | /* Clean up locks etc */
|
---|
| 597 | CRYPTO_THREAD_cleanup_local(&appinfokey);
|
---|
| 598 | CRYPTO_THREAD_lock_free(malloc_lock);
|
---|
| 599 | CRYPTO_THREAD_lock_free(long_malloc_lock);
|
---|
| 600 | malloc_lock = NULL;
|
---|
| 601 | long_malloc_lock = NULL;
|
---|
| 602 |
|
---|
| 603 | return ml.chunks == 0 ? 1 : 0;
|
---|
| 604 | }
|
---|
| 605 |
|
---|
| 606 | # ifndef OPENSSL_NO_STDIO
|
---|
| 607 | int CRYPTO_mem_leaks_fp(FILE *fp)
|
---|
| 608 | {
|
---|
| 609 | BIO *b;
|
---|
| 610 | int ret;
|
---|
| 611 |
|
---|
| 612 | /*
|
---|
| 613 | * Need to turn off memory checking when allocated BIOs ... especially as
|
---|
| 614 | * we're creating them at a time when we're trying to check we've not
|
---|
| 615 | * left anything un-free()'d!!
|
---|
| 616 | */
|
---|
| 617 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
|
---|
| 618 | b = BIO_new(BIO_s_file());
|
---|
| 619 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
|
---|
| 620 | if (b == NULL)
|
---|
| 621 | return -1;
|
---|
| 622 | BIO_set_fp(b, fp, BIO_NOCLOSE);
|
---|
| 623 | ret = CRYPTO_mem_leaks(b);
|
---|
| 624 | BIO_free(b);
|
---|
| 625 | return ret;
|
---|
| 626 | }
|
---|
| 627 | # endif
|
---|
| 628 |
|
---|
| 629 | #endif
|
---|