/* 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.]

 */

/*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#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>

EXPORT_C 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);

	}

EXPORT_C 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 / 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);

	}

EXPORT_C int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)

{

	return OBJ_obj2txt(buf, buf_len, a, 0);

}

EXPORT_C int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)

	{

#ifndef SYMBIAN			

	char buf[80];

#else

  char buf[40];

#endif	

  char *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);

	}

EXPORT_C 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);

	if ((ret != NULL) && ((a == NULL) || (*a != ret)))

		ASN1_OBJECT_free(ret);

	return(NULL);

}

EXPORT_C ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,

	     long len)

	{

	ASN1_OBJECT *ret=NULL;

	const unsigned char *p;

	int i;

	/* 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;

	if ((ret->data == NULL) || (ret->length < len))

		{

		if (ret->data != NULL) OPENSSL_free(ret->data);

		ret->data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1);

		ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;

		if (ret->data == NULL)

			{ i=ERR_R_MALLOC_FAILURE; goto err; }

		}

	memcpy(ret->data,p,(int)len);

	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);

	}

EXPORT_C 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);

	}

EXPORT_C 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(a->data);

		a->data=NULL;

		a->length=0;

		}

	if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)

		OPENSSL_free(a);

	}

EXPORT_C 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)