/* crypto/asn1/a_object.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <limits.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/bn.h>
int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
{
unsigned char *p;
int objsize;
if ((a == NULL) || (a->data == NULL)) return(0);
objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT);
if (pp == NULL) return objsize;
p= *pp;
ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
memcpy(p,a->data,a->length);
p+=a->length;
*pp=p;
return(objsize);
}
int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
{
int i,first,len=0,c, use_bn;
char ftmp[24], *tmp = ftmp;
int tmpsize = sizeof ftmp;
const char *p;
unsigned long l;
BIGNUM *bl = NULL;
if (num == 0)
return(0);
else if (num == -1)
num=strlen(buf);
p=buf;
c= *(p++);
num--;
if ((c >= '0') && (c <= '2'))
{
first= c-'0';
}
else
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE);
goto err;
}
if (num <= 0)
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER);
goto err;
}
c= *(p++);
num--;
for (;;)
{
if (num <= 0) break;
if ((c != '.') && (c != ' '))
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR);
goto err;
}
l=0;
use_bn = 0;
for (;;)
{
if (num <= 0) break;
num--;
c= *(p++);
if ((c == ' ') || (c == '.'))
break;
if ((c < '0') || (c > '9'))
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
goto err;
}
if (!use_bn && l >= ((ULONG_MAX - 80) / 10L))
{
use_bn = 1;
if (!bl)
bl = BN_new();
if (!bl || !BN_set_word(bl, l))
goto err;
}
if (use_bn)
{
if (!BN_mul_word(bl, 10L)
|| !BN_add_word(bl, c-'0'))
goto err;
}
else
l=l*10L+(long)(c-'0');
}
if (len == 0)
{
if ((first < 2) && (l >= 40))
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
goto err;
}
if (use_bn)
{
if (!BN_add_word(bl, first * 40))
goto err;
}
else
l+=(long)first*40;
}
i=0;
if (use_bn)
{
int blsize;
blsize = BN_num_bits(bl);
blsize = (blsize + 6)/7;
if (blsize > tmpsize)
{
if (tmp != ftmp)
OPENSSL_free(tmp);
tmpsize = blsize + 32;
tmp = OPENSSL_malloc(tmpsize);
if (!tmp)
goto err;
}
while(blsize--)
tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L);
}
else
{
for (;;)
{
tmp[i++]=(unsigned char)l&0x7f;
l>>=7L;
if (l == 0L) break;
}
}
if (out != NULL)
{
if (len+i > olen)
{
ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL);
goto err;
}
while (--i > 0)
out[len++]=tmp[i]|0x80;
out[len++]=tmp[0];
}
else
len+=i;
}
if (tmp != ftmp)
OPENSSL_free(tmp);
if (bl)
BN_free(bl);
return(len);
err:
if (tmp != ftmp)
OPENSSL_free(tmp);
if (bl)
BN_free(bl);
return(0);
}
int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
{
return OBJ_obj2txt(buf, buf_len, a, 0);
}
int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
{
char buf[80], *p = buf;
int i;
if ((a == NULL) || (a->data == NULL))
return(BIO_write(bp,"NULL",4));
i=i2t_ASN1_OBJECT(buf,sizeof buf,a);
if (i > (int)(sizeof(buf) - 1))
{
p = OPENSSL_malloc(i + 1);
if (!p)
return -1;
i2t_ASN1_OBJECT(p,i + 1,a);
}
if (i <= 0)
return BIO_write(bp, "<INVALID>", 9);
BIO_write(bp,p,i);
if (p != buf)
OPENSSL_free(p);
return(i);
}
ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
long length)
{
const unsigned char *p;
long len;
int tag,xclass;
int inf,i;
ASN1_OBJECT *ret = NULL;
p= *pp;
inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
if (inf & 0x80)
{
i=ASN1_R_BAD_OBJECT_HEADER;
goto err;
}
if (tag != V_ASN1_OBJECT)
{
i=ASN1_R_EXPECTING_AN_OBJECT;
goto err;
}
ret = c2i_ASN1_OBJECT(a, &p, len);
if(ret) *pp = p;
return ret;
err:
ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
return(NULL);
}
ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
long len)
{
ASN1_OBJECT *ret=NULL;
const unsigned char *p;
unsigned char *data;
int i;
/* Sanity check OID encoding: can't have leading 0x80 in
* subidentifiers, see: X.690 8.19.2
*/
for (i = 0, p = *pp; i < len; i++, p++)
{
if (*p == 0x80 && (!i || !(p[-1] & 0x80)))
{
ASN1err(ASN1_F_C2I_ASN1_OBJECT,ASN1_R_INVALID_OBJECT_ENCODING);
return NULL;
}
}
/* only the ASN1_OBJECTs from the 'table' will have values
* for ->sn or ->ln */
if ((a == NULL) || ((*a) == NULL) ||
!((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
{
if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
}
else ret=(*a);
p= *pp;
/* detach data from object */
data = (unsigned char *)ret->data;
ret->data = NULL;
/* once detached we can change it */
if ((data == NULL) || (ret->length < len))
{
ret->length=0;
if (data != NULL) OPENSSL_free(data);
data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1);
if (data == NULL)
{ i=ERR_R_MALLOC_FAILURE; goto err; }
ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
}
memcpy(data,p,(int)len);
/* reattach data to object, after which it remains const */
ret->data =data;
ret->length=(int)len;
ret->sn=NULL;
ret->ln=NULL;
/* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
p+=len;
if (a != NULL) (*a)=ret;
*pp=p;
return(ret);
err:
ASN1err(ASN1_F_C2I_ASN1_OBJECT,i);
if ((ret != NULL) && ((a == NULL) || (*a != ret)))
ASN1_OBJECT_free(ret);
return(NULL);
}
ASN1_OBJECT *ASN1_OBJECT_new(void)
{
ASN1_OBJECT *ret;
ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
if (ret == NULL)
{
ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
return(NULL);
}
ret->length=0;
ret->data=NULL;
ret->nid=0;
ret->sn=NULL;
ret->ln=NULL;
ret->flags=ASN1_OBJECT_FLAG_DYNAMIC;
return(ret);
}
void ASN1_OBJECT_free(ASN1_OBJECT *a)
{
if (a == NULL) return;
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
{
#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause memory leaks */
if (a->sn != NULL) OPENSSL_free((void *)a->sn);
if (a->ln != NULL) OPENSSL_free((void *)a->ln);
#endif
a->sn=a->ln=NULL;
}
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
{
if (a->data != NULL) OPENSSL_free((void *)a->data);
a->data=NULL;
a->length=0;
}
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
OPENSSL_free(a);
}
ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
const char *sn, const char *ln)
{
ASN1_OBJECT o;
o.sn=sn;
o.ln=ln;
o.data=data;
o.nid=nid;
o.length=len;
o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
ASN1_OBJECT_FLAG_DYNAMIC_DATA;
return(OBJ_dup(&o));
}
IMPLEMENT_STACK_OF(ASN1_OBJECT)
IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT)