X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fmem.c;h=a7826908e61ca9c3b4c562c15f6a22a77a00a5e7;hp=7d6b5af0b1b11402a60c1c2729431c4e37e443b8;hb=0472883cc224a6b6170d1c951f20da85152276f2;hpb=9ac42ed8fc915c7447a88c200eda8e2e62fbabb4

diff --git a/crypto/mem.c b/crypto/mem.c
index 7d6b5af0b1..a7826908e6 100644
--- a/crypto/mem.c
+++ b/crypto/mem.c
@@ -62,54 +62,182 @@
 #include "cryptlib.h"
 
 
-static char *(*malloc_locked_func)()=(char *(*)())malloc;
-static void (*free_locked_func)()=(void (*)())free;
-static char *(*malloc_func)()=	(char *(*)())malloc;
-static char *(*realloc_func)()=	(char *(*)())realloc;
-static void (*free_func)()=	(void (*)())free;
-
-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 int (*get_debug_options_func)()= (int (*)())CRYPTO_dbg_get_options;
-
-void CRYPTO_set_mem_functions(char *(*m)(), char *(*r)(), void (*f)())
-	{
-	if ((m == NULL) || (r == NULL) || (f == NULL)) return;
-	malloc_func=m;
-	realloc_func=r;
+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 *))
+	{
+	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_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
 	free_locked_func=f;
+	return 1;
 	}
 
-void CRYPTO_set_mem_debug_functions(void (*m)(), void (*r)(), void (*f)(),void (*so)(),int (*go)())
+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 ((m == NULL) || (r == NULL) || (f == NULL) || (so == NULL) || (go == NULL))
-		return;
+	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;
 	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_set_locked_mem_functions(char *(*m)(), void (*f)())
+
+void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
+	void (**f)(void *))
 	{
-	if ((m == NULL) || (f == NULL)) return;
-	malloc_locked_func=m;
-	free_locked_func=f;
+	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_functions(char *(**m)(), char *(**r)(), void (**f)())
+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_func;
-	if (r != NULL) *r=realloc_func;
+	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_mem_debug_functions(void (**m)(), void (**r)(), void (**f)(),void (**so)(),int (**go)())
+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;
@@ -118,88 +246,107 @@ void CRYPTO_get_mem_debug_functions(void (**m)(), void (**r)(), void (**f)(),voi
 	if (go != NULL) *go=get_debug_options_func;
 	}
 
-void CRYPTO_get_locked_mem_functions(char *(**m)(), void (**f)())
-	{
-	if (m != NULL) *m=malloc_locked_func;
-	if (f != NULL) *f=free_locked_func;
-	}
 
-void *CRYPTO_malloc_locked(int num, char *file, int line)
+void *CRYPTO_malloc_locked(int num, const char *file, int line)
 	{
-	char *ret = NULL;
+	void *ret = NULL;
 
-	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);
+	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
-	malloc_debug_func(ret, num, file, line, 1);
+	if (malloc_debug_func != NULL)
+		malloc_debug_func(ret, num, file, line, 1);
 
 	return ret;
 	}
 
 void CRYPTO_free_locked(void *str)
 	{
-	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);
-	free_debug_func(NULL, 1);
+	if (free_debug_func != NULL)
+		free_debug_func(NULL, 1);
 	}
 
-void *CRYPTO_malloc(int num, char *file, int line)
+void *CRYPTO_malloc(int num, const char *file, int line)
 	{
-	char *ret = NULL;
+	void *ret = NULL;
 
-	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);
+	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
-	malloc_debug_func(ret, num, file, line, 1);
+	if (malloc_debug_func != NULL)
+		malloc_debug_func(ret, num, file, line, 1);
 
 	return ret;
 	}
 
-void *CRYPTO_realloc(void *str, int num, char *file, int line)
+void *CRYPTO_realloc(void *str, int num, const char *file, int line)
 	{
-	char *ret = NULL;
+	void *ret = NULL;
+
+	if (str == NULL)
+		return CRYPTO_malloc(num, file, line);
 
-	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);
+	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
-	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;
 	}
 
 void CRYPTO_free(void *str)
 	{
-	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);
-	free_debug_func(NULL, 1);
+	if (free_debug_func != NULL)
+		free_debug_func(NULL, 1);
 	}
 
-
-void *CRYPTO_remalloc(void *a, int num, char *file, int line)
+void *CRYPTO_remalloc(void *a, int num, const char *file, int line)
 	{
-	if (a != NULL) Free(a);
-	a=(char *)Malloc(num);
+	if (a != NULL) OPENSSL_free(a);
+	a=(char *)OPENSSL_malloc(num);
 	return(a);
 	}
 
-void CRYPTO_set_mem_debug_options(int bits)
+
+void CRYPTO_set_mem_debug_options(long bits)
 	{
-	set_debug_options_func(bits);
+	if (set_debug_options_func != NULL)
+		set_debug_options_func(bits);
 	}
 
-int CRYPTO_get_mem_debug_options()
+long CRYPTO_get_mem_debug_options(void)
 	{
-	return get_debug_options_func();
+	if (get_debug_options_func != NULL)
+		return get_debug_options_func();
+	return 0;
 	}