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      1 /* crypto/objects/obj_lib.c */
      2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com)
      3  * All rights reserved.
      4  *
      5  * This package is an SSL implementation written
      6  * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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,*sn=NULL;
     70 	unsigned char *data=NULL;
     71 
     72 	if (o == NULL) return(NULL);
     73 	if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
     74 		return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of
     75 					     duplication is this??? */
     76 
     77 	r=ASN1_OBJECT_new();
     78 	if (r == NULL)
     79 		{
     80 		OBJerr(OBJ_F_OBJ_DUP,ERR_R_ASN1_LIB);
     81 		return(NULL);
     82 		}
     83 	data=OPENSSL_malloc(o->length);
     84 	if (data == NULL)
     85 		goto err;
     86 	if (o->data != NULL)
     87 		memcpy(data,o->data,o->length);
     88 	/* once data attached to object it remains const */
     89 	r->data = data;
     90 	r->length=o->length;
     91 	r->nid=o->nid;
     92 	r->ln=r->sn=NULL;
     93 	if (o->ln != NULL)
     94 		{
     95 		i=strlen(o->ln)+1;
     96 		ln=OPENSSL_malloc(i);
     97 		if (ln == NULL) goto err;
     98 		memcpy(ln,o->ln,i);
     99 		r->ln=ln;
    100 		}
    101 
    102 	if (o->sn != NULL)
    103 		{
    104 		i=strlen(o->sn)+1;
    105 		sn=OPENSSL_malloc(i);
    106 		if (sn == NULL) goto err;
    107 		memcpy(sn,o->sn,i);
    108 		r->sn=sn;
    109 		}
    110 	r->flags=o->flags|(ASN1_OBJECT_FLAG_DYNAMIC|
    111 		ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA);
    112 	return(r);
    113 err:
    114 	OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);
    115 	if (ln != NULL)		OPENSSL_free(ln);
    116 	if (sn != NULL)		OPENSSL_free(sn);
    117 	if (data != NULL)	OPENSSL_free(data);
    118 	if (r != NULL)		OPENSSL_free(r);
    119 	return(NULL);
    120 	}
    121 
    122 int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
    123 	{
    124 	int ret;
    125 
    126 	ret=(a->length-b->length);
    127 	if (ret) return(ret);
    128 	return(memcmp(a->data,b->data,a->length));
    129 	}
    130