AppleCSP/open_ssl/ex_data.c

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /* crypto/ex_data.c */
  20 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  21  * All rights reserved.
  22  *
  23  * This package is an SSL implementation written
  24  * by Eric Young (eay@cryptsoft.com).
  25  * The implementation was written so as to conform with Netscapes SSL.
  26  *
  27  * This library is free for commercial and non-commercial use as long as
  28  * the following conditions are aheared to.  The following conditions
  29  * apply to all code found in this distribution, be it the RC4, RSA,
  30  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  31  * included with this distribution is covered by the same copyright terms
  32  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  33  *
  34  * Copyright remains Eric Young's, and as such any Copyright notices in
  35  * the code are not to be removed.
  36  * If this package is used in a product, Eric Young should be given attribution
  37  * as the author of the parts of the library used.
  38  * This can be in the form of a textual message at program startup or
  39  * in documentation (online or textual) provided with the package.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *    "This product includes cryptographic software written by
  52  *     Eric Young (eay@cryptsoft.com)"
  53  *    The word 'cryptographic' can be left out if the rouines from the library
  54  *    being used are not cryptographic related :-).
  55  * 4. If you include any Windows specific code (or a derivative thereof) from
  56  *    the apps directory (application code) you must include an acknowledgement:
  57  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  58  *
  59  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  69  * SUCH DAMAGE.
  70  *
  71  * The licence and distribution terms for any publically available version or
  72  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  73  * copied and put under another distribution licence
  74  * [including the GNU Public Licence.]
  75  */
  76
  77 #include <stdio.h>
  78 #include <stdlib.h>
  79 #include <openssl/buffer.h>
  80 #include <openssl/bio.h>
  81 #include <openssl/lhash.h>
  82 #include "cryptlib.h"
  83
  84 int CRYPTO_get_ex_new_index(int idx, STACK_OF(CRYPTO_EX_DATA_FUNCS) **skp, long argl, void *argp,
  85              CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
  86         {
  87         int ret= -1;
  88         CRYPTO_EX_DATA_FUNCS *a;
  89
  90         MemCheck_off();
  91         if (*skp == NULL)
  92                 *skp=sk_CRYPTO_EX_DATA_FUNCS_new_null();
  93         if (*skp == NULL)
  94                 {
  95                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
  96                 goto err;
  97                 }
  98         a=(CRYPTO_EX_DATA_FUNCS *)Malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
  99         if (a == NULL)
 100                 {
 101                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
 102                 goto err;
 103                 }
 104         a->argl=argl;
 105         a->argp=argp;
 106         a->new_func=new_func;
 107         a->dup_func=dup_func;
 108         a->free_func=free_func;
 109         while (sk_CRYPTO_EX_DATA_FUNCS_num(*skp) <= idx)
 110                 {
 111                 if (!sk_CRYPTO_EX_DATA_FUNCS_push(*skp,NULL))
 112                         {
 113                         CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE);
 114                         Free(a);
 115                         goto err;
 116                         }
 117                 }
 118         sk_CRYPTO_EX_DATA_FUNCS_set(*skp,idx, a);
 119         ret=idx;
 120 err:
 121         MemCheck_on();
 122         return(idx);
 123         }
 124
 125 int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val)
 126         {
 127         int i;
 128
 129         if (ad->sk == NULL)
 130                 {
 131                 if ((ad->sk=sk_new_null()) == NULL)
 132                         {
 133                         CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE);
 134                         return(0);
 135                         }
 136                 }
 137         i=sk_num(ad->sk);
 138
 139         while (i <= idx)
 140                 {
 141                 if (!sk_push(ad->sk,NULL))
 142                         {
 143                         CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE);
 144                         return(0);
 145                         }
 146                 i++;
 147                 }
 148         sk_set(ad->sk,idx,val);
 149         return(1);
 150         }
 151
 152 void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *ad, int idx)
 153         {
 154         if (ad->sk == NULL)
 155                 return(0);
 156         else if (idx >= sk_num(ad->sk))
 157                 return(0);
 158         else
 159                 return(sk_value(ad->sk,idx));
 160         }
 161
 162 /* The callback is called with the 'object', which is the original data object
 163  * being duplicated, a pointer to the
 164  * 'new' object to be inserted, the index, and the argi/argp
 165  */
 166 int CRYPTO_dup_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, CRYPTO_EX_DATA *to,
 167              CRYPTO_EX_DATA *from)
 168         {
 169         int i,j,m,r;
 170         CRYPTO_EX_DATA_FUNCS *mm;
 171         char *from_d;
 172
 173         if (meth == NULL) return(1);
 174         if (from->sk == NULL) return(1);
 175         m=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
 176         j=sk_num(from->sk);
 177         for (i=0; i<j; i++)
 178                 {
 179                 from_d=CRYPTO_get_ex_data(from,i);
 180                 if (i < m)
 181                         {
 182                         mm=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
 183                         if (mm->dup_func != NULL)
 184                                 r=mm->dup_func(to,from,(char **)&from_d,i,
 185                                         mm->argl,mm->argp);
 186                         }
 187                 CRYPTO_set_ex_data(to,i,from_d);
 188                 }
 189         return(1);
 190         }
 191
 192 /* Call each free callback */
 193 void CRYPTO_free_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad)
 194         {
 195         CRYPTO_EX_DATA_FUNCS *m;
 196         void *ptr;
 197         int i,max;
 198
 199         if (meth != NULL)
 200                 {
 201                 max=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
 202                 for (i=0; i<max; i++)
 203                         {
 204                         m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
 205                         if ((m != NULL) && (m->free_func != NULL))
 206                                 {
 207                                 ptr=CRYPTO_get_ex_data(ad,i);
 208                                 m->free_func(obj,ptr,ad,i,m->argl,m->argp);
 209                                 }
 210                         }
 211                 }
 212         if (ad->sk != NULL)
 213                 {
 214                 sk_free(ad->sk);
 215                 ad->sk=NULL;
 216                 }
 217         }
 218
 219 void CRYPTO_new_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad)
 220         {
 221         CRYPTO_EX_DATA_FUNCS *m;
 222         void *ptr;
 223         int i,max;
 224
 225         ad->sk=NULL;
 226         if (meth != NULL)
 227                 {
 228                 max=sk_CRYPTO_EX_DATA_FUNCS_num(meth);
 229                 for (i=0; i<max; i++)
 230                         {
 231                         m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i);
 232                         if ((m != NULL) && (m->new_func != NULL))
 233                                 {
 234                                 ptr=CRYPTO_get_ex_data(ad,i);
 235                                 m->new_func(obj,ptr,ad,i,m->argl,m->argp);
 236                                 }
 237                         }
 238                 }
 239         }
 240
 241 IMPLEMENT_STACK_OF(CRYPTO_EX_DATA_FUNCS)