gnupg/assuan/assuan-util.c

/* assuan-util.c - Utility functions for Assuan 
 *	Copyright (C) 2001 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "assuan-defs.h"


static void *(*alloc_func)(size_t n) = malloc;
static void *(*realloc_func)(void *p, size_t n) = realloc;
static void (*free_func)(void*) = free;



void
assuan_set_malloc_hooks ( void *(*new_alloc_func)(size_t n),
                          void *(*new_realloc_func)(void *p, size_t n),
                          void (*new_free_func)(void*) )
{
  alloc_func	    = new_alloc_func;
  realloc_func      = new_realloc_func;
  free_func	    = new_free_func;
}

void *
_assuan_malloc (size_t n)
{
  return alloc_func (n);
}

void *
_assuan_realloc (void *a, size_t n)
{
  return realloc_func (a, n);
}

void *
_assuan_calloc (size_t n, size_t m)
{
  void *p = _assuan_malloc (n*m);
  if (p)
    memset (p, 0, n* m);
  return p;
}

void
_assuan_free (void *p)
{
  if (p)
    free_func (p);
}



/* Store the error in the context so that the error sending function
  can take out a descriptive text.  Inside the assuan code, use the
  macro set_error instead of this function. */
int
assuan_set_error (ASSUAN_CONTEXT ctx, int err, const char *text)
{
  ctx->err_no = err;
  ctx->err_str = text;
  return err;
}

void
assuan_set_pointer (ASSUAN_CONTEXT ctx, void *pointer)
{
  if (ctx)
    ctx->user_pointer = pointer;
}

void *
assuan_get_pointer (ASSUAN_CONTEXT ctx)
{
  return ctx? ctx->user_pointer : NULL;
}