223 lines
6.6 KiB
C
223 lines
6.6 KiB
C
/* crypto/ex_data.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <openssl/buffer.h>
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#include <openssl/bio.h>
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#include <openssl/lhash.h>
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#include "cryptlib.h"
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int CRYPTO_get_ex_new_index(int idx, STACK_OF(CRYPTO_EX_DATA_FUNCS) **skp, long argl, void *argp,
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CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
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{
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int ret= -1;
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CRYPTO_EX_DATA_FUNCS *a;
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MemCheck_off();
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if (*skp == NULL)
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*skp=sk_CRYPTO_EX_DATA_FUNCS_new_null();
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if (*skp == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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a=(CRYPTO_EX_DATA_FUNCS *)OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
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if (a == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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a->argl=argl;
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a->argp=argp;
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a->new_func=new_func;
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a->dup_func=dup_func;
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a->free_func=free_func;
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while (sk_CRYPTO_EX_DATA_FUNCS_num(*skp) <= idx)
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{
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if (!sk_CRYPTO_EX_DATA_FUNCS_push(*skp,NULL))
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
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OPENSSL_free(a);
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goto err;
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}
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}
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sk_CRYPTO_EX_DATA_FUNCS_set(*skp,idx, a);
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ret=idx;
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err:
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MemCheck_on();
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return(ret);
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}
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int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val)
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{
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int i;
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if (ad->sk == NULL)
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{
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if ((ad->sk=sk_new_null()) == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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}
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i=sk_num(ad->sk);
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while (i <= idx)
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{
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if (!sk_push(ad->sk,NULL))
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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i++;
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}
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sk_set(ad->sk,idx,val);
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return(1);
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}
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void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *ad, int idx)
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{
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if (ad->sk == NULL)
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return(0);
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else if (idx >= sk_num(ad->sk))
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return(0);
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else
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return(sk_value(ad->sk,idx));
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}
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/* The callback is called with the 'object', which is the original data object
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* being duplicated, a pointer to the
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* 'new' object to be inserted, the index, and the argi/argp
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*/
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int CRYPTO_dup_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, CRYPTO_EX_DATA *to,
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CRYPTO_EX_DATA *from)
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{
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int i,j,m,r;
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CRYPTO_EX_DATA_FUNCS *mm;
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char *from_d;
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if (meth == NULL) return(1);
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if (from->sk == NULL) return(1);
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m=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
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j=sk_num(from->sk);
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for (i=0; i<j; i++)
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{
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from_d=CRYPTO_get_ex_data(from,i);
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if (i < m)
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{
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mm=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
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if (mm->dup_func != NULL)
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r=mm->dup_func(to,from,(char **)&from_d,i,
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mm->argl,mm->argp);
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}
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CRYPTO_set_ex_data(to,i,from_d);
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}
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return(1);
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}
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/* Call each free callback */
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void CRYPTO_free_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad)
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{
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CRYPTO_EX_DATA_FUNCS *m;
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void *ptr;
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int i,max;
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if (meth != NULL)
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{
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max=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
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for (i=0; i<max; i++)
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{
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m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
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if ((m != NULL) && (m->free_func != NULL))
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{
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ptr=CRYPTO_get_ex_data(ad,i);
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m->free_func(obj,ptr,ad,i,m->argl,m->argp);
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}
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}
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}
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if (ad->sk != NULL)
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{
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sk_free(ad->sk);
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ad->sk=NULL;
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}
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}
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void CRYPTO_new_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad)
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{
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CRYPTO_EX_DATA_FUNCS *m;
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void *ptr;
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int i,max;
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ad->sk=NULL;
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if (meth != NULL)
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{
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max=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
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for (i=0; i<max; i++)
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{
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m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
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if ((m != NULL) && (m->new_func != NULL))
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{
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ptr=CRYPTO_get_ex_data(ad,i);
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m->new_func(obj,ptr,ad,i,m->argl,m->argp);
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}
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}
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}
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}
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IMPLEMENT_STACK_OF(CRYPTO_EX_DATA_FUNCS)
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