--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ssl/libcrypto/src/crypto/mem.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,554 @@
+/* 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.]
+ */
+/*
+ © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <openssl/crypto.h>
+#include "cryptlib.h"
+#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
+#include "libcrypto_wsd_macros.h"
+#include "libcrypto_wsd.h"
+#endif
+
+#ifndef EMULATOR
+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. */
+#else
+ GET_STATIC_VAR_FROM_TLS(allow_customize,mem,int)
+ #define allow_customize (*GET_WSD_VAR_NAME(allow_customize,mem,s)())
+ GET_STATIC_VAR_FROM_TLS(allow_customize_debug,mem,int)
+ #define allow_customize_debug (*GET_WSD_VAR_NAME(allow_customize_debug,mem,s)())
+#endif
+
+
+/* the following pointers may be changed as long as 'allow_customize' is set */
+#ifndef EMULATOR
+typedef void *(*malloc_func_t)(size_t);
+static void *(*malloc_func)(size_t) = NULL;
+static malloc_func_t const malloc_func_def = malloc;
+static void *default_malloc_ex(size_t num, const char *file, int line)
+ {
+ if(malloc_func)
+ return malloc_func(num);
+ else
+ return malloc_func_def(num);
+ }
+#else
+#define malloc_func libcrypto_ImpurePtr()->malloc_func
+void *default_malloc_ex(size_t num, const char *file, int line)
+ { return malloc_func(num); }
+#endif
+#ifndef EMULATOR
+static void *(*malloc_ex_func)(size_t, const char *file, int line)
+ = default_malloc_ex;
+#else
+#define malloc_ex_func libcrypto_ImpurePtr()->malloc_ex_func
+#endif
+
+#ifndef EMULATOR
+typedef void *(*realloc_func_t)(void *, size_t);
+static void *(*realloc_func)(void *, size_t)= NULL;
+static realloc_func_t const realloc_func_def = realloc ;
+static void *default_realloc_ex(void *str, size_t num,
+ const char *file, int line)
+ {
+ if(realloc_func)
+ return realloc_func(str,num);
+ else
+ return realloc_func_def(str,num);
+ }
+#else
+#define realloc_func libcrypto_ImpurePtr()->realloc_func
+void *default_realloc_ex(void *str, size_t num,
+ const char *file, int line)
+ { return realloc_func(str,num); }
+#endif
+
+
+#ifndef EMULATOR
+static void *(*realloc_ex_func)(void *, size_t, const char *file, int line)
+ = default_realloc_ex;
+#else
+#define realloc_ex_func libcrypto_ImpurePtr()->realloc_ex_func
+#endif
+
+#ifndef EMULATOR
+typedef void (*free_func_t)(void *);
+static void (*free_func)(void *) = NULL;
+static free_func_t const free_func_def = free;
+#else
+#define free_func_openssl libcrypto_ImpurePtr()->free_func_openssl
+#endif
+
+#ifndef EMULATOR
+typedef void *(*malloc_locked_func_t)(size_t);
+static void *(*malloc_locked_func)(size_t) = NULL;
+static malloc_locked_func_t const malloc_locked_func_def = malloc;
+#else
+#define malloc_locked_func libcrypto_ImpurePtr()->malloc_locked_func
+#endif
+
+#ifndef EMULATOR
+static void *default_malloc_locked_ex(size_t num, const char *file, int line)
+ {
+ if(malloc_locked_func)
+ return malloc_locked_func(num);
+ else
+ return malloc_locked_func_def(num);
+ }
+
+static void *(*malloc_locked_ex_func)(size_t, const char *file, int line)
+ = default_malloc_locked_ex;
+
+typedef void (*free_locked_func_t)(void *);
+static void (*free_locked_func)(void *) = NULL;
+static free_locked_func_t const free_locked_func_def = free;
+#else
+void *default_malloc_locked_ex(size_t num, const char *file, int line)
+ { return malloc_locked_func(num); }
+
+#define malloc_locked_ex_func libcrypto_ImpurePtr()->malloc_locked_ex_func
+#define free_locked_func libcrypto_ImpurePtr()->free_locked_func
+#endif
+
+
+
+
+/* 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 */
+#ifndef EMULATOR
+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
+#define malloc_debug_func libcrypto_ImpurePtr()->malloc_debug_func
+#define realloc_debug_func libcrypto_ImpurePtr()->realloc_debug_func
+#define free_debug_func libcrypto_ImpurePtr()->free_debug_func
+#define set_debug_options_func libcrypto_ImpurePtr()->set_debug_options_func
+#define get_debug_options_func libcrypto_ImpurePtr()->get_debug_options_func
+
+#endif
+#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
+
+
+EXPORT_C int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
+ void (*f)(void *))
+ {
+ 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;
+#ifndef EMULATOR
+ free_func=f;
+#else
+ free_func_openssl=f;
+#endif
+ malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
+ free_locked_func=f;
+ return 1;
+ }
+
+EXPORT_C 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;
+#ifndef EMULATOR
+ free_func=f;
+#else
+ free_func_openssl=f;
+#endif
+ malloc_locked_func=0; malloc_locked_ex_func=m;
+ free_locked_func=f;
+ return 1;
+ }
+
+EXPORT_C 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;
+ }
+
+EXPORT_C 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;
+#ifndef EMULATOR
+ free_func=f;
+#else
+ free_func_openssl=f;
+#endif
+ return 1;
+ }
+
+EXPORT_C 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;
+ malloc_debug_func=m;
+ realloc_debug_func=r;
+ free_debug_func=f;
+ set_debug_options_func=so;
+ get_debug_options_func=go;
+ return 1;
+ }
+
+
+EXPORT_C 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) ?
+#ifndef EMULATOR
+ (malloc_func!=NULL?malloc_func:malloc_func_def) : 0;
+#else
+ malloc_func : 0;
+#endif
+
+ if (r != NULL) *r = (realloc_ex_func == default_realloc_ex) ?
+#ifndef EMULATOR
+ (realloc_func!=NULL?realloc_func:realloc_func_def) : 0;
+#else
+ realloc_func : 0;
+#endif
+
+#ifndef EMULATOR
+ if (f != NULL) *f=(free_func?free_func:free_func_def);
+#else
+ if (f != NULL) *f=free_func_openssl;
+#endif
+ }
+
+EXPORT_C 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;
+ #ifndef EMULATOR
+ if (f != NULL) *f=(free_func?free_func:free_func_def);
+ #else
+ if (f != NULL) *f=free_func_openssl;
+ #endif
+ }
+
+EXPORT_C 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) ?
+#ifndef EMULATOR
+ (malloc_locked_func?malloc_locked_func:malloc_locked_func_def) : 0;
+#else
+ malloc_locked_func : 0;
+#endif
+#ifndef EMULATOR
+ if (f != NULL) *f=(free_locked_func?free_locked_func:free_locked_func_def);
+#else
+ if (f != NULL) *f=free_locked_func;
+#endif
+ }
+
+EXPORT_C 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;
+#ifndef EMULATOR
+ if (f != NULL) *f=(free_locked_func?free_locked_func:free_locked_func_def);
+#else
+ if (f != NULL) *f= free_locked_func;
+#endif
+ }
+
+EXPORT_C 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;
+ }
+
+#ifdef EMULATOR
+
+unsigned char GET_WSD_VAR_NAME(cleanse_ctr,mem_clr, g)();
+#define cleanse_ctr (*GET_WSD_VAR_NAME(cleanse_ctr,mem_clr, g)())
+#endif
+
+EXPORT_C void *CRYPTO_malloc_locked(int num, const char *file, int line)
+ {
+ void *ret = NULL;
+ extern unsigned char cleanse_ctr;
+
+ 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);
+
+ /* Create a dependency on the value of 'cleanse_ctr' so our memory
+ * sanitisation function can't be optimised out. NB: We only do
+ * this for >2Kb so the overhead doesn't bother us. */
+ if(ret && (num > 2048))
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+
+ return ret;
+ }
+
+EXPORT_C 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
+#ifndef EMULATOR
+ free_locked_func?free_locked_func(str):free_locked_func_def(str);
+#else
+ free_locked_func(str);
+#endif
+ if (free_debug_func != NULL)
+ free_debug_func(NULL, 1);
+ }
+
+
+
+EXPORT_C void *CRYPTO_malloc(int num, const char *file, int line)
+ {
+ void *ret = NULL;
+ extern unsigned char cleanse_ctr;
+
+ 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);
+
+ /* Create a dependency on the value of 'cleanse_ctr' so our memory
+ * sanitisation function can't be optimised out. NB: We only do
+ * this for >2Kb so the overhead doesn't bother us. */
+ if(ret && (num > 2048))
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+
+ return ret;
+ }
+
+EXPORT_C 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;
+ }
+
+EXPORT_C 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;
+
+ 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);
+ #ifndef EMULATOR
+ free_func?free_func(str):free_func_def(str);
+ #else
+ free_func_openssl(str);
+ #endif
+ }
+#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;
+ }
+
+
+EXPORT_C 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
+#ifndef EMULATOR
+ free_func?free_func(str):free_func_def(str);
+#else
+ free_func_openssl(str);
+#endif
+ if (free_debug_func != NULL)
+ free_debug_func(NULL, 1);
+ }
+
+
+EXPORT_C 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);
+ }
+
+EXPORT_C void CRYPTO_set_mem_debug_options(long bits)
+ {
+ if (set_debug_options_func != NULL)
+ set_debug_options_func(bits);
+ }
+
+EXPORT_C long CRYPTO_get_mem_debug_options(void)
+ {
+ if (get_debug_options_func != NULL)
+ return get_debug_options_func();
+ return 0;
+ }
+
+