safestack.h

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/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    [e-mail].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([e-mail]).  This product includes software written by Tim
 * Hudson ([e-mail]).
 *
 */

#ifndef HEADER_SAFESTACK_H
#define HEADER_SAFESTACK_H

#include <openssl/stack.h>

typedef void (*openssl_fptr)(void);
#define openssl_fcast(f) ((openssl_fptr)f)

#ifdef DEBUG_SAFESTACK

#define STACK_OF(type) struct stack_st_##type
#define PREDECLARE_STACK_OF(type) STACK_OF(type);

#define DECLARE_STACK_OF(type) \
STACK_OF(type) \
    { \
    STACK stack; \
    };

#define IMPLEMENT_STACK_OF(type) /* nada (obsolete in new safestack approach)*/

/* SKM_sk_... stack macros are internal to safestack.h:
 * never use them directly, use sk_<type>_... instead */
#define SKM_sk_new(type, cmp) \
	((STACK_OF(type) * (*)(int (*)(const type * const *, const type * const *)))openssl_fcast(sk_new))(cmp)
#define SKM_sk_new_null(type) \
	((STACK_OF(type) * (*)(void))openssl_fcast(sk_new_null))()
#define SKM_sk_free(type, st) \
	((void (*)(STACK_OF(type) *))openssl_fcast(sk_free))(st)
#define SKM_sk_num(type, st) \
	((int (*)(const STACK_OF(type) *))openssl_fcast(sk_num))(st)
#define SKM_sk_value(type, st,i) \
	((type * (*)(const STACK_OF(type) *, int))openssl_fcast(sk_value))(st, i)
#define SKM_sk_set(type, st,i,val) \
	((type * (*)(STACK_OF(type) *, int, type *))openssl_fcast(sk_set))(st, i, val)
#define SKM_sk_zero(type, st) \
	((void (*)(STACK_OF(type) *))openssl_fcast(sk_zero))(st)
#define SKM_sk_push(type, st,val) \
	((int (*)(STACK_OF(type) *, type *))openssl_fcast(sk_push))(st, val)
#define SKM_sk_unshift(type, st,val) \
	((int (*)(STACK_OF(type) *, type *))openssl_fcast(sk_unshift))(st, val)
#define SKM_sk_find(type, st,val) \
	((int (*)(STACK_OF(type) *, type *))openssl_fcast(sk_find))(st, val)
#define SKM_sk_delete(type, st,i) \
	((type * (*)(STACK_OF(type) *, int))openssl_fcast(sk_delete))(st, i)
#define SKM_sk_delete_ptr(type, st,ptr) \
	((type * (*)(STACK_OF(type) *, type *))openssl_fcast(sk_delete_ptr))(st, ptr)
#define SKM_sk_insert(type, st,val,i) \
	((int (*)(STACK_OF(type) *, type *, int))openssl_fcast(sk_insert))(st, val, i)
#define SKM_sk_set_cmp_func(type, st,cmp) \
	((int (*(*)(STACK_OF(type) *, int (*)(const type * const *, const type * const *))) \
	  (const type * const *, const type * const *))openssl_fcast(sk_set_cmp_func))\
	(st, cmp)
#define SKM_sk_dup(type, st) \
	((STACK_OF(type) *(*)(STACK_OF(type) *))openssl_fcast(sk_dup))(st)
#define SKM_sk_pop_free(type, st,free_func) \
	((void (*)(STACK_OF(type) *, void (*)(type *)))openssl_fcast(sk_pop_free))\
	(st, free_func)
#define SKM_sk_shift(type, st) \
	((type * (*)(STACK_OF(type) *))openssl_fcast(sk_shift))(st)
#define SKM_sk_pop(type, st) \
	((type * (*)(STACK_OF(type) *))openssl_fcast(sk_pop))(st)
#define SKM_sk_sort(type, st) \
	((void (*)(STACK_OF(type) *))openssl_fcast(sk_sort))(st)
#define SKM_sk_is_sorted(type, st) \
	((int (*)(const STACK_OF(type) *))openssl_fcast(sk_is_sorted))(st)

#define	SKM_ASN1_SET_OF_d2i(type, st, pp, length, d2i_func, free_func, ex_tag, ex_class) \
((STACK_OF(type) * (*) (STACK_OF(type) **,const unsigned char **, long , \
                         type *(*)(type **, const unsigned char **,long), \
                                void (*)(type *), int ,int )) openssl_fcast(d2i_ASN1_SET)) \
			(st,pp,length, d2i_func, free_func, ex_tag,ex_class)
#define	SKM_ASN1_SET_OF_i2d(type, st, pp, i2d_func, ex_tag, ex_class, is_set) \
	((int (*)(STACK_OF(type) *,unsigned char **, \
        int (*)(type *,unsigned char **), int , int , int)) openssl_fcast(i2d_ASN1_SET)) \
						(st,pp,i2d_func,ex_tag,ex_class,is_set)

#define	SKM_ASN1_seq_pack(type, st, i2d_func, buf, len) \
	((unsigned char *(*)(STACK_OF(type) *, \
        int (*)(type *,unsigned char **), unsigned char **,int *)) openssl_fcast(ASN1_seq_pack)) \
				(st, i2d_func, buf, len)
#define	SKM_ASN1_seq_unpack(type, buf, len, d2i_func, free_func) \
	((STACK_OF(type) * (*)(const unsigned char *,int, \
                              type *(*)(type **,const unsigned char **, long), \
                              void (*)(type *)))openssl_fcast(ASN1_seq_unpack)) \
					(buf,len,d2i_func, free_func)

#define SKM_PKCS12_decrypt_d2i(type, algor, d2i_func, free_func, pass, passlen, oct, seq) \
	((STACK_OF(type) * (*)(X509_ALGOR *, \
            		type *(*)(type **, const unsigned char **, long), \
				void (*)(type *), \
                                const char *, int, \
                                ASN1_STRING *, int))PKCS12_decrypt_d2i) \
				(algor,d2i_func,free_func,pass,passlen,oct,seq)

#else

#define STACK_OF(type) STACK
#define PREDECLARE_STACK_OF(type) /* nada */
#define DECLARE_STACK_OF(type)    /* nada */
#define IMPLEMENT_STACK_OF(type)  /* nada */

#define SKM_sk_new(type, cmp) \
	sk_new((int (*)(const char * const *, const char * const *))(cmp))
#define SKM_sk_new_null(type) \
	sk_new_null()
#define SKM_sk_free(type, st) \
	sk_free(st)
#define SKM_sk_num(type, st) \
	sk_num(st)
#define SKM_sk_value(type, st,i) \
	((type *)sk_value(st, i))
#define SKM_sk_set(type, st,i,val) \
	((type *)sk_set(st, i,(char *)val))
#define SKM_sk_zero(type, st) \
	sk_zero(st)
#define SKM_sk_push(type, st,val) \
	sk_push(st, (char *)val)
#define SKM_sk_unshift(type, st,val) \
	sk_unshift(st, val)
#define SKM_sk_find(type, st,val) \
	sk_find(st, (char *)val)
#define SKM_sk_delete(type, st,i) \
	((type *)sk_delete(st, i))
#define SKM_sk_delete_ptr(type, st,ptr) \
	((type *)sk_delete_ptr(st,(char *)ptr))
#define SKM_sk_insert(type, st,val,i) \
	sk_insert(st, (char *)val, i)
#define SKM_sk_set_cmp_func(type, st,cmp) \
	((int (*)(const type * const *,const type * const *)) \
	sk_set_cmp_func(st, (int (*)(const char * const *, const char * const *))(cmp)))
#define SKM_sk_dup(type, st) \
	sk_dup(st)
#define SKM_sk_pop_free(type, st,free_func) \
	sk_pop_free(st, (void (*)(void *))free_func)
#define SKM_sk_shift(type, st) \
	((type *)sk_shift(st))
#define SKM_sk_pop(type, st) \
	((type *)sk_pop(st))
#define SKM_sk_sort(type, st) \
	sk_sort(st)