8d28d5f81b
functions need to be constified, and therefore meant a number of easy changes a little everywhere. Now, if someone could explain to me why OBJ_dup() cheats...
127 lines
4.5 KiB
C
127 lines
4.5 KiB
C
/* crypto/objects/obj_lib.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 "cryptlib.h"
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#include <openssl/lhash.h>
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#include <openssl/objects.h>
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#include <openssl/buffer.h>
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ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
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{
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ASN1_OBJECT *r;
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int i;
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char *ln=NULL;
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if (o == NULL) return(NULL);
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if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
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return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of
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duplication is this??? */
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r=ASN1_OBJECT_new();
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if (r == NULL)
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{
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OBJerr(OBJ_F_OBJ_DUP,ERR_R_ASN1_LIB);
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return(NULL);
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}
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r->data=OPENSSL_malloc(o->length);
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if (r->data == NULL)
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goto err;
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memcpy(r->data,o->data,o->length);
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r->length=o->length;
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r->nid=o->nid;
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r->ln=r->sn=NULL;
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if (o->ln != NULL)
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{
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i=strlen(o->ln)+1;
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r->ln=ln=OPENSSL_malloc(i);
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if (r->ln == NULL) goto err;
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memcpy(ln,o->ln,i);
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}
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if (o->sn != NULL)
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{
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char *s;
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i=strlen(o->sn)+1;
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r->sn=s=OPENSSL_malloc(i);
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if (r->sn == NULL) goto err;
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memcpy(s,o->sn,i);
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}
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r->flags=o->flags|(ASN1_OBJECT_FLAG_DYNAMIC|
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ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|ASN1_OBJECT_FLAG_DYNAMIC_DATA);
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return(r);
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err:
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OBJerr(OBJ_F_OBJ_DUP,ERR_R_MALLOC_FAILURE);
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if (r != NULL)
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{
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if (ln != NULL) OPENSSL_free(ln);
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if (r->data != NULL) OPENSSL_free(r->data);
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OPENSSL_free(r);
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}
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return(NULL);
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}
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int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
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{
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int ret;
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ret=(a->length-b->length);
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if (ret) return(ret);
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return(memcmp(a->data,b->data,a->length));
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}
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