crypto/openssl-0.9/crypto/objects/obj_lib.c

   1 /* crypto/objects/obj_lib.c */
   2 /* Copyright (C) 1995-1998 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 <openssl/lhash.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/buffer.h>
  64
  65 ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
  66         {
  67         ASN1_OBJECT *r;
  68         int i;
  69         char *ln=NULL;
  70
  71         if (o == NULL) return(NULL);
  72         if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
  73                 return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of
  74                                              duplication is this??? */
  75
  76         r=ASN1_OBJECT_new();
  77         if (r == NULL)
  78                 {
  79                 OBJerr(OBJ_F_OBJ_DUP,ERR_R_ASN1_LIB);
  80                 return(NULL);
  81                 }
  82         r->data=OPENSSL_malloc(o->length);
  83         if (r->data == NULL)
  84                 goto err;
  85         if (o->data != NULL)
  86                 memcpy(r->data,o->data,o->length);
  87         r->length=o->length;
  88         r->nid=o->nid;
  89         r->ln=r->sn=NULL;
  90         if (o->ln != NULL)
  91                 {
  92                 i=strlen(o->ln)+1;
  93                 r->ln=ln=OPENSSL_malloc(i);
  94                 if (r->ln == NULL) goto err;
  95                 memcpy(ln,o->ln,i);
  96                 }
  97
  98         if (o->sn != NULL)
  99                 {
 100                 char *s;
 101
 102                 i=strlen(o->sn)+1;
 103                 r->sn=s=OPENSSL_malloc(i);
 104                 if (r->sn == NULL) goto err;
 105                 memcpy(s,o->sn,i);
 106                 }
 107         r->flags=o->flags|(ASN1_OBJECT_FLAG_DYNAMIC|
 108                 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA);
 109         return(r);
 110 err:
 111         OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);
 112         if (r != NULL)
 113                 {
 114                 if (ln != NULL) OPENSSL_free(ln);
 115                 if (r->data != NULL) OPENSSL_free(r->data);
 116                 OPENSSL_free(r);
 117                 }
 118         return(NULL);
 119         }
 120
 121 int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
 122         {
 123         int ret;
 124
 125         ret=(a->length-b->length);
 126         if (ret) return(ret);
 127         return(memcmp(a->data,b->data,a->length));
 128         }