IABSD.fr/src/lib/libcrypto/malloc-wrapper.c

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• Author : jsing
  Date : 2018-05-13 13:49:04
  Hash : a8d59823
  Message : Turn CRYPTO_realloc_clean() into a recallocarray() wrapper. ok beck@ tb@

• lib/libcrypto/malloc-wrapper.c

• /* $OpenBSD: malloc-wrapper.c,v 1.7 2018/05/13 13:49:04 jsing Exp $ */
  /*
   * Copyright (c) 2014 Bob Beck
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  int
  CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
      void (*f)(void *))
  {
  	return 0;
  }
  
  int
  CRYPTO_set_mem_ex_functions(void *(*m)(size_t, const char *, int),
      void *(*r)(void *, size_t, const char *, int), void (*f)(void *))
  {
  	return 0;
  }
  
  int
  CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *))
  {
  	return 0;
  }
  
  int
  CRYPTO_set_locked_mem_ex_functions(void *(*m)(size_t, const char *, int),
      void (*f)(void *))
  {
  	return 0;
  }
  
  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 0;
  }
  
  
  void
  CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
      void (**f)(void *))
  {
  	if (m != NULL)
  		*m = malloc;
  	if (r != NULL)
  		*r = realloc;
  	if (f != NULL)
  		*f = free;
  }
  
  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 = NULL;
  	if (r != NULL)
  		*r = NULL;
  	if (f != NULL)
  		*f = free;
  }
  
  void
  CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
  {
  	if (m != NULL)
  		*m = malloc;
  	if (f != NULL)
  		*f = free;
  }
  
  void
  CRYPTO_get_locked_mem_ex_functions(void *(**m)(size_t, const char *, int),
      void (**f)(void *))
  {
  	if (m != NULL)
  		*m = NULL;
  	if (f != NULL)
  		*f = free;
  }
  
  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 = NULL;
  	if (r != NULL)
  		*r = NULL;
  	if (f != NULL)
  		*f = NULL;
  	if (so != NULL)
  		*so = NULL;
  	if (go != NULL)
  		*go = NULL;
  }
  
  
  void *
  CRYPTO_malloc_locked(int num, const char *file, int line)
  {
  	if (num <= 0)
  		return NULL;
  	return malloc(num);
  }
  
  void
  CRYPTO_free_locked(void *ptr)
  {
  	free(ptr);
  }
  
  void *
  CRYPTO_malloc(int num, const char *file, int line)
  {
  	if (num <= 0)
  		return NULL;
  	return malloc(num);
  }
  
  char *
  CRYPTO_strdup(const char *str, const char *file, int line)
  {
  	return strdup(str);
  }
  
  void *
  CRYPTO_realloc(void *ptr, int num, const char *file, int line)
  {
  	if (num <= 0)
  		return NULL;
  	return realloc(ptr, num);
  }
  
  void *
  CRYPTO_realloc_clean(void *ptr, int old_len, int num, const char *file,
      int line)
  {
  	if (num <= 0)
  		return NULL;
  	/* Original does not support shrinking. */
  	if (num < old_len)
  		return NULL;
  	return recallocarray(ptr, old_len, num, 1);
  }
  
  void
  CRYPTO_free(void *ptr)
  {
  	free(ptr);
  }
  
  void *
  CRYPTO_remalloc(void *a, int num, const char *file, int line)
  {
  	free(a);
  	return malloc(num);
  }
  
  void
  CRYPTO_set_mem_debug_options(long bits)
  {
  	return;
  }
  
  long
  CRYPTO_get_mem_debug_options(void)
  {
  	return 0;
  }