From 65a22e8e4dd1763a195b5c4ff8ff2574a13b3240 Mon Sep 17 00:00:00 2001 From: Richard Levitte Date: Wed, 10 Jan 2001 13:14:58 +0000 Subject: [PATCH] As response to a user request to be able to use external memory handling routines that need file name and line number information, I've added a call level to our memory handling routines to allow that kind of hooking. --- CHANGES | 25 ++++++++++++++ crypto/crypto.h | 10 ++++++ crypto/mem.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++--- 3 files changed, 119 insertions(+), 5 deletions(-) diff --git a/CHANGES b/CHANGES index e5371b98dc..77ad4d16f7 100644 --- a/CHANGES +++ b/CHANGES @@ -3,6 +3,31 @@ Changes between 0.9.6 and 0.9.7 [xx XXX 2000] + *) Add another call level for memory allocation routines, thereby + allowing memory allocation callbacks that can be given file + name and line number information. The basic functionality + remains, as well as the original possibility to just replace + malloc(), realloc() and free(). The new functions that can be + registered help users provide variants of malloc(), realloc() + and free() that take two extra arguments, a const char* and an + int. To register and find out the current settings for those + hooks, the following functions are provided: + + CRYPTO_set_mem_ex_functions + CRYPTO_set_locked_mem_ex_functions + CRYPTO_get_mem_ex_functions + CRYPTO_get_locked_mem_ex_functions + + They work the same way as the corresponding CRYPTO_set_mem_functions + and friends with one exception: giving NULL as arguments will restore + the internal hooks to internal routines and will still make the above + functions return 1 and not 0. + + This functionality was created as a direct request to add the + possibility to interface with the Windows debugging routines + _malloc_dbg, _realloc_dbg and _free_dbg. + [Richard Levitte] + *) Fix to uni2asc() to cope with zero length Unicode strings. These are present in some PKCS#12 files. [Steve Henson] diff --git a/crypto/crypto.h b/crypto/crypto.h index 96a852a703..328b0e86e7 100644 --- a/crypto/crypto.h +++ b/crypto/crypto.h @@ -320,6 +320,11 @@ void (*CRYPTO_get_dynlock_destroy_callback(void))(struct CRYPTO_dynlock_value *l * call the latter last if you need different functions */ int CRYPTO_set_mem_functions(void *(*m)(size_t),void *(*r)(void *,size_t), void (*f)(void *)); int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*free_func)(void *)); +int CRYPTO_set_mem_ex_functions(void *(*m)(size_t,const char *,int), + void *(*r)(void *,size_t,const char *,int), + void (*f)(void *,const char *,int)); +int CRYPTO_set_locked_mem_ex_functions(void *(*m)(size_t,const char *,int), + void (*free_func)(void *,const char *,int)); 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), @@ -327,6 +332,11 @@ int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int), long (*go)(void)); void CRYPTO_get_mem_functions(void *(**m)(size_t),void *(**r)(void *, size_t), void (**f)(void *)); void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *)); +void CRYPTO_get_mem_ex_functions(void *(**m)(size_t,const char *,int), + void *(**r)(void *, size_t,const char *,int), + void (**f)(void *,const char *,int)); +void CRYPTO_get_locked_mem_ex_functions(void *(**m)(size_t,const char *,int), + void (**f)(void *,const char *,int)); 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), diff --git a/crypto/mem.c b/crypto/mem.c index 4e4b894ab7..8b3f109ea6 100644 --- a/crypto/mem.c +++ b/crypto/mem.c @@ -77,6 +77,20 @@ static void *(*malloc_func)(size_t) = malloc; static void *(*realloc_func)(void *, size_t)= realloc; static void (*free_func)(void *) = free; +static void *crypto_i_malloc_ex(size_t, const char *file, int line); +static void *crypto_i_realloc_ex(void *, size_t, const char *file, int line); +static void crypto_i_free_ex(void *); +static void *(*malloc_locked_ex_func)(size_t, const char *file, int line) + = crypto_i_malloc_ex; +static void (*free_locked_ex_func)(void *) + = crypto_i_free_ex; +static void *(*malloc_ex_func)(size_t, const char *file, int line) + = crypto_i_malloc_ex; +static void *(*realloc_ex_func)(void *, size_t, const char *file, int line) + = crypto_i_realloc_ex; +static void (*free_ex_func)(void *) + = crypto_i_free_ex; + /* may be changed as long as `allow_customize_debug' is set */ /* XXX use correct function pointer types */ #ifdef CRYPTO_MDEBUG @@ -115,6 +129,24 @@ int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t), 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 == NULL) m = crypto_i_malloc_ex; + if (r == NULL) r = crypto_i_realloc_ex; + if (f == NULL) f = crypto_i_free_ex; + malloc_ex_func=m; + realloc_ex_func=r; + free_ex_func=f; + malloc_locked_ex_func=m; + free_locked_ex_func=f; + return 1; + } + int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *)) { if (!allow_customize) @@ -126,6 +158,19 @@ int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *)) 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) m = crypto_i_malloc_ex; + if (f == NULL) f = crypto_i_free_ex; + malloc_locked_ex_func=m; + free_locked_ex_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), @@ -150,12 +195,30 @@ void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t), 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; + if (r != NULL) *r=realloc_ex_func; + if (f != NULL) *f=free_ex_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_locked_mem_ex_functions( + void *(**m)(size_t,const char *,int), + void (**f)(void *)) + { + if (m != NULL) *m=malloc_locked_ex_func; + if (f != NULL) *f=free_locked_ex_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), @@ -180,7 +243,7 @@ void *CRYPTO_malloc_locked(int num, const char *file, int line) allow_customize_debug = 0; malloc_debug_func(NULL, num, file, line, 0); } - ret = malloc_locked_func(num); + ret = malloc_locked_ex_func(num,file,line); #ifdef LEVITTE_DEBUG_MEM fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); #endif @@ -197,7 +260,7 @@ void CRYPTO_free_locked(void *str) #ifdef LEVITTE_DEBUG_MEM fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); #endif - free_locked_func(str); + free_locked_ex_func(str); if (free_debug_func != NULL) free_debug_func(NULL, 1); } @@ -212,7 +275,7 @@ void *CRYPTO_malloc(int num, const char *file, int line) allow_customize_debug = 0; malloc_debug_func(NULL, num, file, line, 0); } - ret = malloc_func(num); + ret = malloc_ex_func(num,file,line); #ifdef LEVITTE_DEBUG_MEM fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); #endif @@ -228,7 +291,7 @@ void *CRYPTO_realloc(void *str, int num, const char *file, int line) if (realloc_debug_func != NULL) realloc_debug_func(str, NULL, num, file, line, 0); - ret = realloc_func(str,num); + 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 @@ -245,7 +308,7 @@ void CRYPTO_free(void *str) #ifdef LEVITTE_DEBUG_MEM fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); #endif - free_func(str); + free_ex_func(str); if (free_debug_func != NULL) free_debug_func(NULL, 1); } @@ -270,3 +333,19 @@ long CRYPTO_get_mem_debug_options(void) return get_debug_options_func(); return 0; } + +static void *crypto_i_malloc_ex(size_t num, const char *file, int line) + { + return malloc_func(num); + } + +static void *crypto_i_realloc_ex(void *str, size_t num, + const char *file, int line) + { + return realloc_func(str,num); + } + +static void crypto_i_free_ex(void *str) + { + free_func(str); + } -- 2.25.1