#include <stdio.h>
#include <stdlib.h>
#include <openssl/crypto.h>
-#ifdef CRYPTO_MDEBUG_TIME
-# include <time.h>
-#endif
-#include <openssl/buffer.h>
-#include <openssl/bio.h>
-#include <openssl/lhash.h>
#include "cryptlib.h"
-/* #ifdef CRYPTO_MDEBUG */
-/* static int mh_mode=CRYPTO_MEM_CHECK_ON; */
-/* #else */
-static int mh_mode=CRYPTO_MEM_CHECK_OFF;
-/* #endif */
-/* State CRYPTO_MEM_CHECK_ON exists only temporarily when the library
- * thinks that certain allocations should not be checked (e.g. the data
- * structures used for memory checking). It is not suitable as an initial
- * state: the library will unexpectedly enable memory checking when it
- * executes one of those sections that want to disable checking
- * temporarily.
- *
- * State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes no sense whatsoever.
- */
-static unsigned long order=0;
+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 LHASH *mh=NULL;
-typedef struct mem_st
- {
- char *addr;
- int num;
- const char *file;
- int line;
- unsigned long order;
-#ifdef CRYPTO_MDEBUG_TIME
- time_t time;
-#endif
- } MEM;
-int CRYPTO_mem_ctrl(int mode)
- {
- int ret=mh_mode;
+/* the following pointers may be changed as long as 'allow_customize' is set */
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- switch (mode)
- {
- /* for applications: */
- case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
- mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE;
- break;
- case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
- mh_mode = 0;
- break;
-
- /* switch off temporarily (for library-internal use): */
- case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
- mh_mode&= ~CRYPTO_MEM_CHECK_ENABLE;
- break;
- case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
- if (mh_mode&CRYPTO_MEM_CHECK_ON)
- mh_mode|=CRYPTO_MEM_CHECK_ENABLE;
- break;
-
- default:
- break;
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- return(ret);
- }
+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 int mem_cmp(MEM *a, MEM *b)
- {
- return(a->addr - b->addr);
- }
+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 unsigned long mem_hash(MEM *a)
- {
- unsigned long ret;
+static void (*free_func)(void *) = free;
- ret=(unsigned long)a->addr;
+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;
- ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
- return(ret);
- }
+static void (*free_locked_func)(void *) = free;
-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;
-void CRYPTO_set_mem_functions(char *(*m)(), char *(*r)(), void (*f)())
+
+/* 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 ((m == NULL) || (r == NULL) || (f == NULL)) return;
- malloc_func=m;
- realloc_func=r;
+ /* 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_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
free_locked_func=f;
+ return 1;
}
-void CRYPTO_set_locked_mem_functions(char *(*m)(), void (*f)())
+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) || (f == NULL)) return;
- malloc_locked_func=m;
+ 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;
}
-void CRYPTO_get_mem_functions(char *(**m)(), char *(**r)(), void (**f)())
+int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *))
{
- if (m != NULL) *m=malloc_func;
- if (r != NULL) *r=realloc_func;
- if (f != NULL) *f=free_func;
+ 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;
}
-void CRYPTO_get_locked_mem_functions(char *(**m)(), void (**f)())
+int CRYPTO_set_locked_mem_ex_functions(
+ void *(*m)(size_t,const char *,int),
+ void (*f)(void *))
{
- if (m != NULL) *m=malloc_locked_func;
- if (f != NULL) *f=free_locked_func;
+ 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;
}
-void *CRYPTO_malloc_locked(int num)
+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))
{
- return(malloc_locked_func(num));
+ 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_free_locked(void *str)
+
+void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
+ void (**f)(void *))
{
- free_locked_func(str);
+ 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_malloc(int num)
+void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
{
- return(malloc_func(num));
+ 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_realloc(void *str, int num)
+void CRYPTO_get_locked_mem_ex_functions(
+ void *(**m)(size_t,const char *,int),
+ void (**f)(void *))
{
- return(realloc_func(str,num));
+ 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_free(void *str)
+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))
{
- free_func(str);
+ 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;
}
-static unsigned long break_order_num=0;
-void *CRYPTO_dbg_malloc(int num, const char *file, int line)
+
+void *CRYPTO_malloc_locked(int num, const char *file, int line)
{
- char *ret;
- MEM *m,*mm;
+ void *ret = NULL;
- if ((ret=malloc_func(num)) == NULL)
- return(NULL);
+ if (num <= 0) return NULL;
- if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
+ allow_customize = 0;
+ if (malloc_debug_func != NULL)
{
- MemCheck_off();
- if ((m=(MEM *)Malloc(sizeof(MEM))) == NULL)
- {
- Free(ret);
- MemCheck_on();
- return(NULL);
- }
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- if (mh == NULL)
- {
- if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
- {
- Free(ret);
- Free(m);
- ret=NULL;
- goto err;
- }
- }
-
- m->addr=ret;
- m->file=file;
- m->line=line;
- m->num=num;
- if (order == break_order_num)
- {
- /* BREAK HERE */
- m->order=order;
- }
- m->order=order++;
-#ifdef CRYPTO_MDEBUG_TIME
- m->time=time(NULL);
-#endif
- if ((mm=(MEM *)lh_insert(mh,(char *)m)) != NULL)
- {
- /* Not good, but don't sweat it */
- Free(mm);
- }
-err:
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- MemCheck_on();
+ allow_customize_debug = 0;
+ malloc_debug_func(NULL, num, file, line, 0);
}
- return(ret);
+ 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
-void CRYPTO_dbg_free(void *addr)
- {
- MEM m,*mp;
+ return ret;
+ }
- if ((mh_mode & CRYPTO_MEM_CHECK_ENABLE) && (mh != NULL))
- {
- MemCheck_off();
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- m.addr=addr;
- mp=(MEM *)lh_delete(mh,(char *)&m);
- if (mp != NULL)
- Free(mp);
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- MemCheck_on();
- }
- free_func(addr);
+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_dbg_realloc(void *addr, int num, const char *file, int line)
+void *CRYPTO_malloc(int num, const char *file, int line)
{
- char *ret;
- MEM m,*mp;
+ void *ret = NULL;
- ret=realloc_func(addr,num);
- if (ret == addr) return(ret);
+ if (num <= 0) return NULL;
- if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
+ allow_customize = 0;
+ if (malloc_debug_func != NULL)
{
- MemCheck_off();
- if (ret == NULL) return(NULL);
- m.addr=addr;
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- mp=(MEM *)lh_delete(mh,(char *)&m);
- if (mp != NULL)
- {
- mp->addr=ret;
- lh_insert(mh,(char *)mp);
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- MemCheck_on();
+ allow_customize_debug = 0;
+ malloc_debug_func(NULL, num, file, line, 0);
}
- return(ret);
+ 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
-void *CRYPTO_remalloc(void *a, int n)
- {
- if (a != NULL) Free(a);
- a=(char *)Malloc(n);
- return(a);
+ return ret;
}
-
-void *CRYPTO_dbg_remalloc(void *a, int n, const char *file, int line)
+char *CRYPTO_strdup(const char *str, const char *file, int line)
{
- if (a != NULL) CRYPTO_dbg_free(a);
- a=(char *)CRYPTO_dbg_malloc(n,file,line);
- return(a);
- }
+ char *ret = CRYPTO_malloc(strlen(str)+1, file, line);
+ strcpy(ret, str);
+ return ret;
+ }
-typedef struct mem_leak_st
+void *CRYPTO_realloc(void *str, int num, const char *file, int line)
{
- BIO *bio;
- int chunks;
- long bytes;
- } MEM_LEAK;
+ void *ret = NULL;
-static void print_leak(MEM *m, MEM_LEAK *l)
- {
- char buf[128];
+ if (str == NULL)
+ return CRYPTO_malloc(num, file, line);
- if(m->addr == (char *)l->bio)
- return;
-#ifdef CRYPTO_MDEBUG_TIME
- {
- struct tm *lcl = localtime(&m->time);
- sprintf(buf,"[%02d:%02d:%02d] %5lu file=%s, line=%d, number=%d, address=%08lX\n",
- lcl->tm_hour,lcl->tm_min,lcl->tm_sec,
- m->order,m->file,m->line,m->num,(unsigned long)m->addr);
- }
-#else
- sprintf(buf,"%5lu file=%s, line=%d, number=%d, address=%08lX\n",
- m->order,m->file,m->line,m->num,(unsigned long)m->addr);
+ 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
- BIO_puts(l->bio,buf);
- l->chunks++;
- l->bytes+=m->num;
+ if (realloc_debug_func != NULL)
+ realloc_debug_func(str, ret, num, file, line, 1);
+
+ return ret;
}
-void CRYPTO_mem_leaks(BIO *b)
+void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file,
+ int line)
{
- MEM_LEAK ml;
- char buf[80];
-
- if (mh == NULL) return;
- ml.bio=b;
- ml.bytes=0;
- ml.chunks=0;
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- if (ml.chunks != 0)
+ 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)
{
- sprintf(buf,"%ld bytes leaked in %d chunks\n",
- ml.bytes,ml.chunks);
- BIO_puts(b,buf);
+ memcpy(ret,str,old_len);
+ OPENSSL_cleanse(str,old_len);
+ free_func(str);
}
-
-#if 0
- lh_stats_bio(mh,b);
- lh_node_stats_bio(mh,b);
- lh_node_usage_stats_bio(mh,b);
+#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);
-static void (*mem_cb)()=NULL;
+ return ret;
+ }
-static void cb_leak(MEM *m, char *cb)
+void CRYPTO_free(void *str)
{
- void (*mem_callback)()=(void (*)())cb;
- mem_callback(m->order,m->file,m->line,m->num,m->addr);
+ 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_mem_leaks_cb(void (*cb)())
+void *CRYPTO_remalloc(void *a, int num, const char *file, int line)
{
- if (mh == NULL) return;
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- mem_cb=cb;
- lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
- mem_cb=NULL;
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+ if (a != NULL) OPENSSL_free(a);
+ a=(char *)OPENSSL_malloc(num);
+ return(a);
}
-#ifndef NO_FP_API
-void CRYPTO_mem_leaks_fp(FILE *fp)
+void CRYPTO_set_mem_debug_options(long bits)
{
- BIO *b;
-
- if (mh == NULL) return;
- if ((b=BIO_new(BIO_s_file())) == NULL)
- return;
- BIO_set_fp(b,fp,BIO_NOCLOSE);
- CRYPTO_mem_leaks(b);
- BIO_free(b);
+ if (set_debug_options_func != NULL)
+ set_debug_options_func(bits);
}
-#endif
+long CRYPTO_get_mem_debug_options(void)
+ {
+ if (get_debug_options_func != NULL)
+ return get_debug_options_func();
+ return 0;
+ }
projects / openssl.git / blobdiff