* 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 <stdio.h>
#include <stdlib.h>
-#include <openssl/buffer.h>
-#include <openssl/bio.h>
-#include <openssl/lhash.h>
-#include "cryptlib.h"
+#include <openssl/crypto.h>
+#include "internal/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_secure_func)(size_t) = malloc;
+static void *default_malloc_secure_ex(size_t num, const char *file, int line)
+{
+ return malloc_secure_func(num);
+}
+static void *(*malloc_secure_ex_func)(size_t, const char *file, int line)
+ = default_malloc_secure_ex;
+static void (*free_secure_func)(void *) = free;
+
+/* may be changed as long as 'allow_customize_debug' is set */
+/* XXX use correct function pointer types */
#ifdef CRYPTO_MDEBUG
-static int mh_mode=CRYPTO_MEM_CHECK_ON;
+/* use default functions from mem_dbg.c */
+static void (*malloc_debug_func) (void *, size_t, const char *, int, int)
+ = CRYPTO_dbg_malloc;
+static void (*realloc_debug_func) (void *, void *, size_t, 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
-static int mh_mode=CRYPTO_MEM_CHECK_OFF;
+/*
+ * 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
-static unsigned long order=0;
-
-static LHASH *mh=NULL;
-
-typedef struct mem_st
- {
- char *addr;
- int num;
- const char *file;
- int line;
- unsigned long order;
- } MEM;
-
-int CRYPTO_mem_ctrl(int mode)
- {
- int ret=mh_mode;
-
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- switch (mode)
- {
- case CRYPTO_MEM_CHECK_ON:
- mh_mode|=CRYPTO_MEM_CHECK_ON;
- break;
- case CRYPTO_MEM_CHECK_OFF:
- mh_mode&= ~CRYPTO_MEM_CHECK_ON;
- break;
- case CRYPTO_MEM_CHECK_DISABLE:
- mh_mode&= ~CRYPTO_MEM_CHECK_ENABLE;
- break;
- case CRYPTO_MEM_CHECK_ENABLE:
- 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 int mem_cmp(MEM *a, MEM *b)
- {
- return(a->addr - b->addr);
- }
-
-static unsigned long mem_hash(MEM *a)
- {
- unsigned long ret;
-
- ret=(unsigned long)a->addr;
-
- ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
- return(ret);
- }
-
-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)())
- {
- if ((m == NULL) || (r == NULL) || (f == NULL)) return;
- malloc_func=m;
- realloc_func=r;
- free_func=f;
- malloc_locked_func=m;
- free_locked_func=f;
- }
-
-void CRYPTO_set_locked_mem_functions(char *(*m)(), void (*f)())
- {
- if ((m == NULL) || (f == NULL)) return;
- malloc_locked_func=m;
- free_locked_func=f;
- }
-
-void CRYPTO_get_mem_functions(char *(**m)(), char *(**r)(), void (**f)())
- {
- if (m != NULL) *m=malloc_func;
- if (r != NULL) *r=realloc_func;
- if (f != NULL) *f=free_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)
- {
- return(malloc_locked_func(num));
- }
-
-void CRYPTO_free_locked(void *str)
- {
- free_locked_func(str);
- }
-
-void *CRYPTO_malloc(int num)
- {
- return(malloc_func(num));
- }
-
-void *CRYPTO_realloc(void *str, int num)
- {
- return(realloc_func(str,num));
- }
-void CRYPTO_free(void *str)
- {
- free_func(str);
- }
-
-static unsigned long break_order_num=0;
-void *CRYPTO_dbg_malloc(int num, const char *file, int line)
- {
- char *ret;
- MEM *m,*mm;
-
- if ((ret=malloc_func(num)) == NULL)
- return(NULL);
-
- if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
- {
- 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++;
- 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();
- }
- return(ret);
- }
-
-void CRYPTO_dbg_free(void *addr)
- {
- MEM m,*mp;
-
- 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_dbg_realloc(void *addr, int num, const char *file, int line)
- {
- char *ret;
- MEM m,*mp;
-
- ret=realloc_func(addr,num);
- if (ret == addr) return(ret);
-
- if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
- {
- 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();
- }
- return(ret);
- }
-
-void *CRYPTO_remalloc(void *a, int n)
- {
- if (a != NULL) Free(a);
- a=(char *)Malloc(n);
- return(a);
- }
-
-void *CRYPTO_dbg_remalloc(void *a, int n, const char *file, int line)
- {
- if (a != NULL) CRYPTO_dbg_free(a);
- a=(char *)CRYPTO_dbg_malloc(n,file,line);
- return(a);
- }
-
-
-typedef struct mem_leak_st
- {
- BIO *bio;
- int chunks;
- long bytes;
- } MEM_LEAK;
-
-static void print_leak(MEM *m, MEM_LEAK *l)
- {
- char buf[128];
-
- if(m->addr == (char *)l->bio)
- return;
- sprintf(buf,"%5lu file=%s, line=%d, number=%d, address=%08lX\n",
- m->order,m->file,m->line,m->num,(unsigned long)m->addr);
- BIO_puts(l->bio,buf);
- l->chunks++;
- l->bytes+=m->num;
- }
-
-void CRYPTO_mem_leaks(BIO *b)
- {
- 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)
- {
- sprintf(buf,"%ld bytes leaked in %d chunks\n",
- ml.bytes,ml.chunks);
- BIO_puts(b,buf);
- }
-
-#if 0
- lh_stats_bio(mh,b);
- lh_node_stats_bio(mh,b);
- lh_node_usage_stats_bio(mh,b);
-#endif
- }
-
-static void (*mem_cb)()=NULL;
-
-static void cb_leak(MEM *m, char *cb)
- {
- void (*mem_callback)()=(void (*)())cb;
- mem_callback(m->order,m->file,m->line,m->num,m->addr);
- }
-
-void CRYPTO_mem_leaks_cb(void (*cb)())
- {
- 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);
- }
-
-#ifndef NO_FP_API
-void CRYPTO_mem_leaks_fp(FILE *fp)
- {
- 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);
- }
+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;
+ /* If user wants to intercept the secure or locked functions, do it
+ * after the basic functions. */
+ malloc_secure_func = m;
+ malloc_secure_ex_func = default_malloc_secure_ex;
+ free_secure_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_secure_func = 0;
+ malloc_secure_ex_func = m;
+ free_secure_func = f;
+ return 1;
+}
+
+int CRYPTO_set_secure_mem_functions(void *(*m)(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) || (f == 0))
+ return 0;
+ malloc_secure_func = m;
+ malloc_secure_ex_func = default_malloc_secure_ex;
+ free_secure_func = f;
+ return 1;
+}
+
+int CRYPTO_set_secure_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_secure_func = 0;
+ malloc_secure_ex_func = m;
+ free_secure_func = f;
+ return 1;
+}
+
+int CRYPTO_set_mem_debug_functions(void (*m) (void *, size_t,
+ const char *, int, int),
+ void (*r) (void *, void *, size_t,
+ 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_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_secure_mem_functions(void *(**m)(size_t), void (**f)(void *))
+{
+ if (m != NULL)
+ *m = (malloc_secure_ex_func == default_malloc_secure_ex) ?
+ malloc_secure_func : 0;
+ if (f != NULL)
+ *f=free_secure_func;
+}
+
+void CRYPTO_get_secure_mem_ex_functions(void *(**m)(size_t,const char *,int),
+ void (**f)(void *))
+{
+ if (m != NULL)
+ *m = (malloc_secure_ex_func != default_malloc_secure_ex) ?
+ malloc_secure_ex_func : 0;
+ if (f != NULL)
+ *f=free_secure_func;
+}
+
+void CRYPTO_get_mem_debug_functions(void (**m) (void *, size_t,
+ const char *, int, int),
+ void (**r) (void *, void *, size_t,
+ 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(size_t 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);
+ 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_zalloc(size_t num, const char *file, int line)
+{
+ void *ret = CRYPTO_malloc(num, file, line);
+
+ if (ret != NULL)
+ memset(ret, 0, num);
+ return ret;
+}
+
+void *CRYPTO_realloc(void *str, size_t 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);
+ if (realloc_debug_func != NULL)
+ realloc_debug_func(str, ret, num, file, line, 1);
+
+ return ret;
+}
+
+void *CRYPTO_realloc_clean(void *str, size_t old_len, size_t 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_clear_free(str, old_len);
+ }
+ 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);
+ free_func(str);
+ if (free_debug_func != NULL)
+ free_debug_func(NULL, 1);
+}
+
+void CRYPTO_clear_free(void *str, size_t num)
+{
+ if (!str)
+ return;
+ if (num)
+ OPENSSL_cleanse(str, num);
+ CRYPTO_free(str);
+}
+
+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;
+}
projects / openssl.git / blobdiff