[thirdparty/openssl.git] / crypto / asn1 / evp_asn1.c

/* crypto/asn1/evp_asn1.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 "cryptlib.h"
#include "asn1.h"
#include "asn1_mac.h"

int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len)
	{
	ASN1_STRING *os;

	if ((os=ASN1_OCTET_STRING_new()) == NULL) return(0);
	if (!ASN1_OCTET_STRING_set(os,data,len)) return(0);
	ASN1_TYPE_set(a,V_ASN1_OCTET_STRING,(char *)os);
	return(1);
	}

/* int max_len:  for returned value    */
int ASN1_TYPE_get_octetstring(ASN1_TYPE *a, unsigned char *data,
	     int max_len)
	{
	int ret,num;
	unsigned char *p;

	if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL))
		{
		ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING,ASN1_R_DATA_IS_WRONG);
		return(-1);
		}
	p=ASN1_STRING_data(a->value.octet_string);
	ret=ASN1_STRING_length(a->value.octet_string);
	if (ret < max_len)
		num=ret;
	else
		num=max_len;
	memcpy(data,p,num);
	return(ret);
	}

int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data,
	     int len)
	{
	int n,size;
	ASN1_OCTET_STRING os,*osp;
	ASN1_INTEGER in;
	unsigned char *p;
	unsigned char buf[32]; /* when they have 256bit longs, 
				* I'll be in trouble */
	in.data=buf;
	in.length=32;
	os.data=data;
	os.type=V_ASN1_OCTET_STRING;
	os.length=len;
	ASN1_INTEGER_set(&in,num);
	n =  i2d_ASN1_INTEGER(&in,NULL);
	n+=M_i2d_ASN1_OCTET_STRING(&os,NULL);

	size=ASN1_object_size(1,n,V_ASN1_SEQUENCE);

	if ((osp=ASN1_STRING_new()) == NULL) return(0);
	/* Grow the 'string' */
	ASN1_STRING_set(osp,NULL,size);

	ASN1_STRING_length(osp)=size;
	p=ASN1_STRING_data(osp);

	ASN1_put_object(&p,1,n,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
	  i2d_ASN1_INTEGER(&in,&p);
	M_i2d_ASN1_OCTET_STRING(&os,&p);

	ASN1_TYPE_set(a,V_ASN1_SEQUENCE,(char *)osp);
	return(1);
	}

/* we return the actual length..., num may be missing, in which
 * case, set it to zero */
/* int max_len:  for returned value    */
int ASN1_TYPE_get_int_octetstring(ASN1_TYPE *a, long *num, unsigned char *data,
	     int max_len)
	{
	int ret= -1,n;
	ASN1_INTEGER *ai=NULL;
	ASN1_OCTET_STRING *os=NULL;
	unsigned char *p;
	long length;
	ASN1_CTX c;

	if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL))
		{
		goto err;
		}
	p=ASN1_STRING_data(a->value.sequence);
	length=ASN1_STRING_length(a->value.sequence);

	c.pp= &p;
	c.p=p;
	c.max=p+length;
	c.error=ASN1_R_DATA_IS_WRONG;

	M_ASN1_D2I_start_sequence();
	c.q=c.p;
	if ((ai=d2i_ASN1_INTEGER(NULL,&c.p,c.slen)) == NULL) goto err;
        c.slen-=(c.p-c.q);
	c.q=c.p;
	if ((os=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) goto err;
        c.slen-=(c.p-c.q);
	if (!M_ASN1_D2I_end_sequence()) goto err;

	if (num != NULL)
		*num=ASN1_INTEGER_get(ai);

	ret=ASN1_STRING_length(os);
	if (max_len > ret)
		n=ret;
	else
		n=max_len;

	if (data != NULL)
		memcpy(data,ASN1_STRING_data(os),n);
	if (0)
		{
err:
		ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING,ASN1_R_DATA_IS_WRONG);
		}
	if (os != NULL) ASN1_OCTET_STRING_free(os);
	if (ai != NULL) ASN1_INTEGER_free(ai);
	return(ret);
	}
Commit	Line	Data
58964a49 RE	1	/* crypto/asn1/evp_asn1.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 "asn1.h"
	62	#include "asn1_mac.h"
	63
6b691a5c	64	int ASN1_TYPE_set_octetstring(ASN1_TYPE a, unsigned char data, int len)
58964a49 RE	65	{
	66	ASN1_STRING *os;
	67
	68	if ((os=ASN1_OCTET_STRING_new()) == NULL) return(0);
	69	if (!ASN1_OCTET_STRING_set(os,data,len)) return(0);
	70	ASN1_TYPE_set(a,V_ASN1_OCTET_STRING,(char *)os);
	71	return(1);
	72	}
	73
6b691a5c UM	74	/* int max_len: for returned value */
	75	int ASN1_TYPE_get_octetstring(ASN1_TYPE a, unsigned char data,
	76	int max_len)
58964a49 RE	77	{
	78	int ret,num;
	79	unsigned char *p;
	80
	81	if ((a->type != V_ASN1_OCTET_STRING) \|\| (a->value.octet_string == NULL))
	82	{
	83	ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING,ASN1_R_DATA_IS_WRONG);
	84	return(-1);
	85	}
	86	p=ASN1_STRING_data(a->value.octet_string);
	87	ret=ASN1_STRING_length(a->value.octet_string);
	88	if (ret < max_len)
	89	num=ret;
	90	else
	91	num=max_len;
	92	memcpy(data,p,num);
	93	return(ret);
	94	}
	95
6b691a5c UM	96	int ASN1_TYPE_set_int_octetstring(ASN1_TYPE a, long num, unsigned char data,
6b691a5c UM	97	int len)
58964a49 RE	98	{
	99	int n,size;
	100	ASN1_OCTET_STRING os,*osp;
	101	ASN1_INTEGER in;
	102	unsigned char *p;
	103	unsigned char buf[32]; /* when they have 256bit longs,
	104	* I'll be in trouble */
	105	in.data=buf;
	106	in.length=32;
	107	os.data=data;
	108	os.type=V_ASN1_OCTET_STRING;
	109	os.length=len;
	110	ASN1_INTEGER_set(&in,num);
	111	n = i2d_ASN1_INTEGER(&in,NULL);
	112	n+=M_i2d_ASN1_OCTET_STRING(&os,NULL);
	113
	114	size=ASN1_object_size(1,n,V_ASN1_SEQUENCE);
	115
	116	if ((osp=ASN1_STRING_new()) == NULL) return(0);
	117	/* Grow the 'string' */
	118	ASN1_STRING_set(osp,NULL,size);
	119
	120	ASN1_STRING_length(osp)=size;
	121	p=ASN1_STRING_data(osp);
	122
	123	ASN1_put_object(&p,1,n,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
	124	i2d_ASN1_INTEGER(&in,&p);
	125	M_i2d_ASN1_OCTET_STRING(&os,&p);
	126
	127	ASN1_TYPE_set(a,V_ASN1_SEQUENCE,(char *)osp);
	128	return(1);
	129	}
	130
dfeab068 RE	131	/* we return the actual length..., num may be missing, in which
dfeab068 RE	132	* case, set it to zero */
6b691a5c UM	133	/* int max_len: for returned value */
	134	int ASN1_TYPE_get_int_octetstring(ASN1_TYPE a, long num, unsigned char *data,
	135	int max_len)
58964a49 RE	136	{
	137	int ret= -1,n;
	138	ASN1_INTEGER *ai=NULL;
	139	ASN1_OCTET_STRING *os=NULL;
	140	unsigned char *p;
	141	long length;
	142	ASN1_CTX c;
	143
	144	if ((a->type != V_ASN1_SEQUENCE) \|\| (a->value.sequence == NULL))
	145	{
	146	goto err;
	147	}
	148	p=ASN1_STRING_data(a->value.sequence);
	149	length=ASN1_STRING_length(a->value.sequence);
	150
	151	c.pp= &p;
	152	c.p=p;
	153	c.max=p+length;
	154	c.error=ASN1_R_DATA_IS_WRONG;
	155
	156	M_ASN1_D2I_start_sequence();
	157	c.q=c.p;
	158	if ((ai=d2i_ASN1_INTEGER(NULL,&c.p,c.slen)) == NULL) goto err;
	159	c.slen-=(c.p-c.q);
	160	c.q=c.p;
	161	if ((os=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) goto err;
	162	c.slen-=(c.p-c.q);
	163	if (!M_ASN1_D2I_end_sequence()) goto err;
	164
	165	if (num != NULL)
	166	*num=ASN1_INTEGER_get(ai);
	167
	168	ret=ASN1_STRING_length(os);
	169	if (max_len > ret)
	170	n=ret;
	171	else
	172	n=max_len;
	173
	174	if (data != NULL)
	175	memcpy(data,ASN1_STRING_data(os),n);
	176	if (0)
	177	{
	178	err:
	179	ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING,ASN1_R_DATA_IS_WRONG);
	180	}
	181	if (os != NULL) ASN1_OCTET_STRING_free(os);
	182	if (ai != NULL) ASN1_INTEGER_free(ai);
	183	return(ret);
	184	}
	185