* 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:
* 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
+ * 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
* 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
#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 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. */
+static void (*free_func) (void *) = free;
-/* may be changed as long as `allow_customize' is set */
-static void *(*malloc_locked_func)(size_t) = malloc;
-static void (*free_locked_func)(void *) = free;
-static void *(*malloc_func)(size_t) = malloc;
-static void *(*realloc_func)(void *, size_t)= realloc;
-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);
+}
-/* may be changed as long as `allow_customize_debug' is set */
+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 (*)())CRYPTO_dbg_malloc;
- static void (*realloc_debug_func)()= (void (*)())CRYPTO_dbg_realloc;
- static void (*free_debug_func)()= (void (*)())CRYPTO_dbg_free;
- static void (*set_debug_options_func)()= (void (*)())CRYPTO_dbg_set_options;
- static long (*get_debug_options_func)()= (long (*)())CRYPTO_dbg_get_options;
+/* 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)()= NULL;
- static void (*realloc_debug_func)()= NULL;
- static void (*free_debug_func)()= NULL;
- static void (*set_debug_options_func)()= NULL;
- static long (*get_debug_options_func)()= NULL;
+/*
+ * 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_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
- void (*f)(void *))
- {
- if (!allow_customize)
- return 0;
- if ((m == NULL) || (r == NULL) || (f == NULL))
- return 0;
- malloc_func=m;
- realloc_func=r;
- free_func=f;
- malloc_locked_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;
- free_locked_func=f;
- return 1;
- }
-
-int CRYPTO_set_mem_debug_functions(void (*m)(), void (*r)(), void (*f)(),void (*so)(),long (*go)())
- {
- 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;
- }
-
-void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
- void (**f)(void *))
- {
- if (m != NULL) *m=malloc_func;
- if (r != NULL) *r=realloc_func;
- 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_func;
- if (f != NULL) *f=free_locked_func;
- }
-
-void CRYPTO_get_mem_debug_functions(void (**m)(), void (**r)(), void (**f)(),void (**so)(),long (**go)())
- {
- 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;
- }
+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)
- {
- char *ret = NULL;
-
- allow_customize = 0;
- if (malloc_debug_func != NULL)
- {
- allow_customize_debug = 0;
- malloc_debug_func(NULL, num, file, line, 0);
- }
- ret = malloc_locked_func(num);
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: > 0x%p (%d)\n", ret, num);
+{
+ 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
- if (malloc_debug_func != NULL)
- malloc_debug_func(ret, num, file, line, 1);
- return ret;
- }
+ return ret;
+}
void CRYPTO_free_locked(void *str)
- {
- if (free_debug_func != NULL)
- free_debug_func(str, 0);
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: < 0x%p\n", 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);
- }
+ free_locked_func(str);
+ if (free_debug_func != NULL)
+ free_debug_func(NULL, 1);
+}
void *CRYPTO_malloc(int num, const char *file, int line)
- {
- char *ret = NULL;
-
- allow_customize = 0;
- if (malloc_debug_func != NULL)
- {
- allow_customize_debug = 0;
- malloc_debug_func(NULL, num, file, line, 0);
- }
- ret = malloc_func(num);
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: > 0x%p (%d)\n", ret, num);
+{
+ 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);
+ if (malloc_debug_func != NULL)
+ malloc_debug_func(ret, num, file, line, 1);
- return ret;
- }
+#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);
+
+ strcpy(ret, str);
+ return ret;
+}
void *CRYPTO_realloc(void *str, int num, const char *file, int line)
- {
- char *ret = NULL;
-
- if (realloc_debug_func != NULL)
- realloc_debug_func(str, NULL, num, file, line, 0);
- ret = realloc_func(str,num);
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: | 0x%p -> 0x%p (%d)\n", str, ret, num);
+{
+ 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);
+ if (realloc_debug_func != NULL)
+ realloc_debug_func(str, ret, num, file, line, 1);
- return ret;
- }
+ return ret;
+}
void CRYPTO_free(void *str)
- {
- if (free_debug_func != NULL)
- free_debug_func(str, 0);
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: < 0x%p\n", 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);
- }
+ 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) Free(a);
- a=(char *)Malloc(num);
- return(a);
- }
-
+{
+ 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()
- {
- if (get_debug_options_func != NULL)
- return get_debug_options_func();
- return 0;
- }
+{
+ 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;
+}
projects / openssl.git / blobdiff