crypto/objects/obj_lib.c

   1 /* crypto/objects/obj_lib.c */
   2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include "lhash.h"
  62 #include "objects.h"
  63 #include "buffer.h"
  64
  65 ASN1_OBJECT *OBJ_dup(o)
  66 ASN1_OBJECT *o;
  67         {
  68         ASN1_OBJECT *r;
  69         int i;
  70
  71         if (o == NULL) return(NULL);
  72         if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
  73                 return(o);
  74
  75         r=(ASN1_OBJECT *)ASN1_OBJECT_new();
  76         if (r == NULL)
  77                 {
  78                 OBJerr(OBJ_F_OBJ_DUP,ERR_R_ASN1_LIB);
  79                 return(NULL);
  80                 }
  81         r->data=(unsigned char *)Malloc(o->length);
  82         if (r->data == NULL)
  83                 goto err;
  84         memcpy(r->data,o->data,o->length);
  85         r->length=o->length;
  86         r->nid=o->nid;
  87         r->ln=r->sn=NULL;
  88         if (o->ln != NULL)
  89                 {
  90                 i=strlen(o->ln)+1;
  91                 r->ln=(char *)Malloc(i);
  92                 if (r->ln == NULL) goto err;
  93                 memcpy(r->ln,o->ln,i);
  94                 }
  95
  96         if (o->sn != NULL)
  97                 {
  98                 i=strlen(o->sn)+1;
  99                 r->sn=(char *)Malloc(i);
 100                 if (r->sn == NULL) goto err;
 101                 memcpy(r->sn,o->sn,i);
 102                 }
 103         r->flags=o->flags|(ASN1_OBJECT_FLAG_DYNAMIC|
 104                 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS);
 105         return(r);
 106 err:
 107         OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);
 108         if (r != NULL)
 109                 {
 110                 if (r->ln != NULL) Free(r->ln);
 111                 if (r->data != NULL) Free(r->data);
 112                 Free(r);
 113                 }
 114         return(NULL);
 115         }
 116
 117 int OBJ_cmp(a,b)
 118 ASN1_OBJECT *a;
 119 ASN1_OBJECT *b;
 120         {
 121         int ret;
 122
 123         ret=(a->length-b->length);
 124         if (ret) return(ret);
 125         return(memcmp(a->data,b->data,a->length));
 126         }