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-rw-r--r--thirdparty/openssl/crypto/mem.c466
1 files changed, 466 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/mem.c b/thirdparty/openssl/crypto/mem.c
new file mode 100644
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+++ b/thirdparty/openssl/crypto/mem.c
@@ -0,0 +1,466 @@
+/* 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;
+
+ if (allow_customize)
+ allow_customize = 0;
+ if (malloc_debug_func != NULL) {
+ if (allow_customize_debug)
+ 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);
+
+#ifndef OPENSSL_CPUID_OBJ
+ /*
+ * 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)) {
+ extern unsigned char cleanse_ctr;
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+ }
+#endif
+
+ 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;
+
+ if (allow_customize)
+ allow_customize = 0;
+ if (malloc_debug_func != NULL) {
+ if (allow_customize_debug)
+ 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);
+
+#ifndef OPENSSL_CPUID_OBJ
+ /*
+ * 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)) {
+ extern unsigned char cleanse_ctr;
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+ }
+#endif
+
+ return ret;
+}
+
+char *CRYPTO_strdup(const char *str, const char *file, int line)
+{
+ char *ret = CRYPTO_malloc(strlen(str) + 1, file, line);
+
+ if (ret == NULL)
+ return NULL;
+
+ strcpy(ret, str);
+ 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;
+}
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