Your operating system memory allocation functions are your friend. If they

are not please fix your operating system. Replace mem.c with an API-compatible
wrapper that just calls the system functions and does not allow a one word
modification of a variable in a running shared library to turn on memory
debug functions that expose things that should not be seen.
ok tedu@

1 files changed, 0 insertions, 441 deletions

diff --git a/src/lib/libcrypto/mem.c b/src/lib/libcrypto/mem.c
deleted file mode 100644
index 548c248785..0000000000
--- a/src/lib/libcrypto/mem.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/* crypto/mem.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- * 
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- * 
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from 
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- * 
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * 
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <openssl/crypto.h>
-#include "cryptlib.h"
-
-
-static int allow_customize = 1;
-/* we provide flexible functions for */
-static int allow_customize_debug = 1;/* exchanging memory - related functions at
-                                        * run - time, but this must be done
-                                        * before any blocks are actually
-                                        * allocated; or we'll run into huge
-                                        * problems when malloc/free pairs
-                                        * don't match etc. */
-
-/* the following pointers may be changed as long as 'allow_customize' is set */
-
-static void *(*malloc_func)(size_t) = malloc;
-static void
-*default_malloc_ex(size_t num, const char *file, int line)
-{
-        return malloc_func(num);
-}
-static void *(*malloc_ex_func)(size_t, const char *file, int line) =
-    default_malloc_ex;
-
-static void *(*realloc_func)(void *, size_t) = realloc;
-static void
-*default_realloc_ex(void *str, size_t num, const char *file, int line)
-{
-        return realloc_func(str, num);
-}
-static void *(*realloc_ex_func)(void *, size_t, const char *file, int line) =
-    default_realloc_ex;
-
-static void (*free_func)(void *) = free;
-
-static void *(*malloc_locked_func)(size_t) = malloc;
-static void
-*default_malloc_locked_ex(size_t num, const char *file, int line)
-{
-        return malloc_locked_func(num);
-}
-static void *(*malloc_locked_ex_func)(size_t, const char *file, int line) =
-    default_malloc_locked_ex;
-
-static void (*free_locked_func)(void *) = free;
-
-
-/* may be changed as long as 'allow_customize_debug' is set */
-/* XXX use correct function pointer types */
-#ifdef CRYPTO_MDEBUG
-/* use default functions from mem_dbg.c */
-static void (*malloc_debug_func)(void *, int, const char *, int, int) =
-    CRYPTO_dbg_malloc;
-static void (*realloc_debug_func)(void *, void *, int, const char *, int, int) =
-    CRYPTO_dbg_realloc;
-static void (*free_debug_func)(void *, int) = CRYPTO_dbg_free;
-static void (*set_debug_options_func)(long) = CRYPTO_dbg_set_options;
-static long (*get_debug_options_func)(void) = CRYPTO_dbg_get_options;
-#else
-/* applications can use CRYPTO_malloc_debug_init() to select above case
- * at run-time */
-static void (*malloc_debug_func)(void *, int, const char *, int, int) = NULL;
-static void (*realloc_debug_func)(void *, void *, int, const char *, int, int) =
-    NULL;
-static void (*free_debug_func)(void *, int) = NULL;
-static void (*set_debug_options_func)(long) = NULL;
-static long (*get_debug_options_func)(void) = NULL;
-#endif
-
-int
-CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
-    void (*f)(void *))
-{
-        /* Dummy call just to ensure OPENSSL_init() gets linked in */
-        OPENSSL_init();
-        if (!allow_customize)
-                return 0;
-        if ((m == 0) || (r == 0) || (f == 0))
-                return 0;
-        malloc_func = m;
-        malloc_ex_func = default_malloc_ex;
-        realloc_func = r;
-        realloc_ex_func = default_realloc_ex;
-        free_func = f;
-        malloc_locked_func = m;
-        malloc_locked_ex_func = default_malloc_locked_ex;
-        free_locked_func = f;
-        return 1;
-}
-
-int
-CRYPTO_set_mem_ex_functions(void *(*m)(size_t, const char *, int),
-    void *(*r)(void *, size_t, const char *, int), void (*f)(void *))
-{
-        if (!allow_customize)
-                return 0;
-        if ((m == 0) || (r == 0) || (f == 0))
-                return 0;
-        malloc_func = 0;
-        malloc_ex_func = m;
-        realloc_func = 0;
-        realloc_ex_func = r;
-        free_func = f;
-        malloc_locked_func = 0;
-        malloc_locked_ex_func = m;
-        free_locked_func = f;
-        return 1;
-}
-
-int
-CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *))
-{
-        if (!allow_customize)
-                return 0;
-        if ((m == NULL) || (f == NULL))
-                return 0;
-        malloc_locked_func = m;
-        malloc_locked_ex_func = default_malloc_locked_ex;
-        free_locked_func = f;
-        return 1;
-}
-
-int
-CRYPTO_set_locked_mem_ex_functions(void *(*m)(size_t, const char *, int),
-    void (*f)(void *))
-{
-        if (!allow_customize)
-                return 0;
-        if ((m == NULL) || (f == NULL))
-                return 0;
-        malloc_locked_func = 0;
-        malloc_locked_ex_func = m;
-        free_func = f;
-        return 1;
-}
-
-int
-CRYPTO_set_mem_debug_functions(void (*m)(void *, int, const char *, int, int),
-    void (*r)(void *, void *, int, const char *, int, int),
-    void (*f)(void *, int), void (*so)(long), long (*go)(void))
-{
-        if (!allow_customize_debug)
-                return 0;
-        OPENSSL_init();
-        malloc_debug_func = m;
-        realloc_debug_func = r;
-        free_debug_func = f;
-        set_debug_options_func = so;
-        get_debug_options_func = go;
-        return 1;
-}
-
-
-void
-CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
-    void (**f)(void *))
-{
-        if (m != NULL)
-                *m = (malloc_ex_func == default_malloc_ex) ? malloc_func : 0;
-        if (r != NULL)
-                *r = (realloc_ex_func == default_realloc_ex) ? realloc_func : 0;
-        if (f != NULL)
-                *f = free_func;
-}
-
-void
-CRYPTO_get_mem_ex_functions(void *(**m)(size_t, const char *, int),
-    void *(**r)(void *, size_t, const char *, int), void (**f)(void *))
-{
-        if (m != NULL)
-                *m = (malloc_ex_func != default_malloc_ex) ? malloc_ex_func : 0;
-        if (r != NULL)
-                *r = (realloc_ex_func != default_realloc_ex) ?
-                    realloc_ex_func : 0;
-        if (f != NULL)
-                *f = free_func;
-}
-
-void
-CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
-{
-        if (m != NULL)
-                *m = (malloc_locked_ex_func == default_malloc_locked_ex) ?
-                    malloc_locked_func : 0;
-        if (f != NULL)
-                *f = free_locked_func;
-}
-
-void
-CRYPTO_get_locked_mem_ex_functions(void *(**m)(size_t, const char *, int),
-    void (**f)(void *))
-{
-        if (m != NULL)
-                *m = (malloc_locked_ex_func != default_malloc_locked_ex) ?
-                    malloc_locked_ex_func : 0;
-        if (f != NULL)
-                *f = free_locked_func;
-}
-
-void
-CRYPTO_get_mem_debug_functions(void (**m)(void *, int, const char *, int, int),
-    void (**r)(void *, void *, int, const char *, int, int),
-    void (**f)(void *, int), void (**so)(long), long (**go)(void))
-{
-        if (m != NULL)
-                *m = malloc_debug_func;
-        if (r != NULL)
-                *r = realloc_debug_func;
-        if (f != NULL)
-                *f = free_debug_func;
-        if (so != NULL)
-                *so = set_debug_options_func;
-        if (go != NULL)
-                *go = get_debug_options_func;
-}
-
-
-void *
-CRYPTO_malloc_locked(int num, const char *file, int line)
-{
-        void *ret = NULL;
-
-        if (num <= 0)
-                return NULL;
-
-        allow_customize = 0;
-        if (malloc_debug_func != NULL) {
-                allow_customize_debug = 0;
-                malloc_debug_func(NULL, num, file, line, 0);
-        }
-        ret = malloc_locked_ex_func(num, file, line);
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);
-#endif
-        if (malloc_debug_func != NULL)
-                malloc_debug_func(ret, num, file, line, 1);
-
-        return ret;
-}
-
-void
-CRYPTO_free_locked(void *str)
-{
-        if (free_debug_func != NULL)
-                free_debug_func(str, 0);
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr, "LEVITTE_DEBUG_MEM:         < 0x%p\n", str);
-#endif
-        free_locked_func(str);
-        if (free_debug_func != NULL)
-                free_debug_func(NULL, 1);
-}
-
-void *
-CRYPTO_malloc(int num, const char *file, int line)
-{
-        void *ret = NULL;
-
-        if (num <= 0)
-                return NULL;
-
-        allow_customize = 0;
-        if (malloc_debug_func != NULL) {
-                allow_customize_debug = 0;
-                malloc_debug_func(NULL, num, file, line, 0);
-        }
-        ret = malloc_ex_func(num, file, line);
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);
-#endif
-        if (malloc_debug_func != NULL)
-                malloc_debug_func(ret, num, file, line, 1);
-
-        return ret;
-}
-
-char *
-CRYPTO_strdup(const char *str, const char *file, int line)
-{
-        size_t len = strlen(str) + 1;
-        char *ret = CRYPTO_malloc(len, file, line);
-
-        memcpy(ret, str, len);
-        return ret;
-}
-
-void *
-CRYPTO_realloc(void *str, int num, const char *file, int line)
-{
-        void *ret = NULL;
-
-        if (str == NULL)
-                return CRYPTO_malloc(num, file, line);
-
-        if (num <= 0)
-                return NULL;
-
-        if (realloc_debug_func != NULL)
-                realloc_debug_func(str, NULL, num, file, line, 0);
-        ret = realloc_ex_func(str, num, file, line);
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr, "LEVITTE_DEBUG_MEM:         | 0x%p -> 0x%p (%d)\n", str, ret, num);
-#endif
-        if (realloc_debug_func != NULL)
-                realloc_debug_func(str, ret, num, file, line, 1);
-
-        return ret;
-}
-
-void *
-CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file,
-int line)
-{
-        void *ret = NULL;
-
-        if (str == NULL)
-                return CRYPTO_malloc(num, file, line);
-
-        if (num <= 0)
-                return NULL;
-
-        /* We don't support shrinking the buffer. Note the memcpy that copies
-         * |old_len| bytes to the new buffer, below. */
-        if (num < old_len)
-                return NULL;
-
-        if (realloc_debug_func != NULL)
-                realloc_debug_func(str, NULL, num, file, line, 0);
-        ret = malloc_ex_func(num, file, line);
-        if (ret) {
-                memcpy(ret, str, old_len);
-                OPENSSL_cleanse(str, old_len);
-                free_func(str);
-        }
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr,
-            "LEVITTE_DEBUG_MEM:         | 0x%p -> 0x%p (%d)\n",
-            str, ret, num);
-#endif
-        if (realloc_debug_func != NULL)
-                realloc_debug_func(str, ret, num, file, line, 1);
-
-        return ret;
-}
-
-void
-CRYPTO_free(void *str)
-{
-        if (free_debug_func != NULL)
-                free_debug_func(str, 0);
-#ifdef LEVITTE_DEBUG_MEM
-        fprintf(stderr, "LEVITTE_DEBUG_MEM:         < 0x%p\n", str);
-#endif
-        free_func(str);
-        if (free_debug_func != NULL)
-                free_debug_func(NULL, 1);
-}
-
-void *
-CRYPTO_remalloc(void *a, int num, const char *file, int line)
-{
-        if (a != NULL)
-                OPENSSL_free(a);
-        a = (char *)OPENSSL_malloc(num);
-        return (a);
-}
-
-void
-CRYPTO_set_mem_debug_options(long bits)
-{
-        if (set_debug_options_func != NULL)
-                set_debug_options_func(bits);
-}
-
-long
-CRYPTO_get_mem_debug_options(void)
-{
-        if (get_debug_options_func != NULL)
-                return get_debug_options_func();
-        return 0;
-}