/* asn1_gen.c */

 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

  * project 2002.

  */

 /* ====================================================================

  * Copyright (c) 2002 The OpenSSL Project.  All rights reserved.

  *

  * 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 above 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 acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

  *

  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

  *    endorse or promote products derived from this software without

  *    prior written permission. For written permission, please contact

  *    licensing@OpenSSL.org.

  *

  * 5. Products derived from this software may not be called "OpenSSL"

  *    nor may "OpenSSL" appear in their names without prior written

  *    permission of the OpenSSL Project.

  *

  * 6. Redistributions of any form whatsoever must retain the following

  *    acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

  *

  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

  * EXPRESSED 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 OpenSSL PROJECT OR

  * ITS 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.

  * ====================================================================

  *

  * This product includes cryptographic software written by Eric Young

  * (eay@cryptsoft.com).  This product includes software written by Tim

  * Hudson (tjh@cryptsoft.com).

  *

  */

  /*

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

  */

 #include "cryptlib.h"

 #include <openssl/asn1.h>

 #include <openssl/x509v3.h>

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd.h"

 #include "libcrypto_wsd_macros.h"

 #endif

 #define ASN1_GEN_FLAG		0x10000

 #define ASN1_GEN_FLAG_IMP	(ASN1_GEN_FLAG|1)

 #define ASN1_GEN_FLAG_EXP	(ASN1_GEN_FLAG|2)

 #define ASN1_GEN_FLAG_TAG	(ASN1_GEN_FLAG|3)

 #define ASN1_GEN_FLAG_BITWRAP	(ASN1_GEN_FLAG|4)

 #define ASN1_GEN_FLAG_OCTWRAP	(ASN1_GEN_FLAG|5)

 #define ASN1_GEN_FLAG_SEQWRAP	(ASN1_GEN_FLAG|6)

 #define ASN1_GEN_FLAG_SETWRAP	(ASN1_GEN_FLAG|7)

 #define ASN1_GEN_FLAG_FORMAT	(ASN1_GEN_FLAG|8)

 #define ASN1_GEN_STR(str,val)	{str, sizeof(str) - 1, val}

 #define ASN1_FLAG_EXP_MAX	20

 /* Input formats */

 /* ASCII: default */

 #define ASN1_GEN_FORMAT_ASCII	1

 /* UTF8 */

 #define ASN1_GEN_FORMAT_UTF8	2

 /* Hex */

 #define ASN1_GEN_FORMAT_HEX	3

 /* List of bits */

 #define ASN1_GEN_FORMAT_BITLIST	4

 struct tag_name_st

 	{

 	const char *strnam;

 	int len;

 	int tag;

 	};

 typedef struct

 	{

 	int exp_tag;

 	int exp_class;

 	int exp_constructed;

 	int exp_pad;

 	long exp_len;

 	} tag_exp_type;

 typedef struct

 	{

 	int imp_tag;

 	int imp_class;

 	int utype;

 	int format;

 	const char *str;

 	tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];

 	int exp_count;

 	} tag_exp_arg;

 static int bitstr_cb(const char *elem, int len, void *bitstr);

 static int asn1_cb(const char *elem, int len, void *bitstr);

 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok);

 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass);

 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf);

 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);

 static int asn1_str2tag(const char *tagstr, int len);

 EXPORT_C ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)

 	{

 	X509V3_CTX cnf;

 	if (!nconf)

 		return ASN1_generate_v3(str, NULL);

 	X509V3_set_nconf(&cnf, nconf);

 	return ASN1_generate_v3(str, &cnf);

 	}

 EXPORT_C ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)

 	{

 	ASN1_TYPE *ret;

 	tag_exp_arg asn1_tags;

 	tag_exp_type *etmp;

 	int i, len;

 	unsigned char *orig_der = NULL, *new_der = NULL;

 	const unsigned char *cpy_start;

 	unsigned char *p;

 	const unsigned char *cp;

 	int cpy_len;

 	long hdr_len;

 	int hdr_constructed = 0, hdr_tag, hdr_class;

 	int r;

 	asn1_tags.imp_tag = -1;

 	asn1_tags.imp_class = -1;

 	asn1_tags.format = ASN1_GEN_FORMAT_ASCII;

 	asn1_tags.exp_count = 0;

 	if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0)

 		return NULL;

 	if ((asn1_tags.utype == V_ASN1_SEQUENCE) || (asn1_tags.utype == V_ASN1_SET))

 		{

 		if (!cnf)

 			{

 			ASN1err(ASN1_F_ASN1_GENERATE_V3, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG);

 			return NULL;

 			}

 		ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf);

 		}

 	else

 		ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);

 	if (!ret)

 		return NULL;

 	/* If no tagging return base type */

 	if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))

 		return ret;

 	/* Generate the encoding */

 	cpy_len = i2d_ASN1_TYPE(ret, &orig_der);

 	ASN1_TYPE_free(ret);

 	ret = NULL;

 	/* Set point to start copying for modified encoding */

 	cpy_start = orig_der;

 	/* Do we need IMPLICIT tagging? */

 	if (asn1_tags.imp_tag != -1)

 		{

 		/* If IMPLICIT we will replace the underlying tag */

 		/* Skip existing tag+len */

 		r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, cpy_len);

 		if (r & 0x80)

 			goto err;

 		/* Update copy length */

 		cpy_len -= cpy_start - orig_der;

 		/* For IMPLICIT tagging the length should match the

 		 * original length and constructed flag should be

 		 * consistent.

 		 */

 		if (r & 0x1)

 			{

 			/* Indefinite length constructed */

 			hdr_constructed = 2;

 			hdr_len = 0;

 			}

 		else

 			/* Just retain constructed flag */

 			hdr_constructed = r & V_ASN1_CONSTRUCTED;

 		/* Work out new length with IMPLICIT tag: ignore constructed

 		 * because it will mess up if indefinite length

 		 */

 		len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);

 		}

 	else

 		len = cpy_len;

 	/* Work out length in any EXPLICIT, starting from end */

 	for(i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; i < asn1_tags.exp_count; i++, etmp--)

 		{

 		/* Content length: number of content octets + any padding */

 		len += etmp->exp_pad;

 		etmp->exp_len = len;

 		/* Total object length: length including new header */

 		len = ASN1_object_size(0, len, etmp->exp_tag);

 		}

 	/* Allocate buffer for new encoding */

 	new_der = OPENSSL_malloc(len);

 #ifdef SYMBIAN

   if(new_der==NULL)

   {

   	return NULL;

   }	

 #endif

 	/* Generate tagged encoding */

 	p = new_der;

 	/* Output explicit tags first */

 	for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; i++, etmp++)

 		{

 		ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,

 					etmp->exp_tag, etmp->exp_class);

 		if (etmp->exp_pad)

 			*p++ = 0;

 		}

 	/* If IMPLICIT, output tag */

 	if (asn1_tags.imp_tag != -1)

 		ASN1_put_object(&p, hdr_constructed, hdr_len,

 					asn1_tags.imp_tag, asn1_tags.imp_class);

 	/* Copy across original encoding */

 	memcpy(p, cpy_start, cpy_len);

 	cp = new_der;

 	/* Obtain new ASN1_TYPE structure */

 	ret = d2i_ASN1_TYPE(NULL, &cp, len);

 	err:

 	if (orig_der)

 		OPENSSL_free(orig_der);

 	if (new_der)

 		OPENSSL_free(new_der);

 	return ret;

 	}

 static int asn1_cb(const char *elem, int len, void *bitstr)

 	{

 	tag_exp_arg *arg = bitstr;

 	int i;

 	int utype;

 	int vlen = 0;

 	const char *p, *vstart = NULL;

 	int tmp_tag, tmp_class;

 	for(i = 0, p = elem; i < len; p++, i++)

 		{

 		/* Look for the ':' in name value pairs */

 		if (*p == ':')

 			{

 			vstart = p + 1;

 			vlen = len - (vstart - elem);

 			len = p - elem;

 			break;

 			}

 		}

 	utype = asn1_str2tag(elem, len);

 	if (utype == -1)

 		{

 		ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG);

 		ERR_add_error_data(2, "tag=", elem);

 		return -1;

 		}

 	/* If this is not a modifier mark end of string and exit */

 	if (!(utype & ASN1_GEN_FLAG))

 		{

 		arg->utype = utype;

 		arg->str = vstart;

 		/* If no value and not end of string, error */

 		if (!vstart && elem[len])

 			{

 			ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE);

 			return -1;

 			}

 		return 0;

 		}

 	switch(utype)

 		{

 		case ASN1_GEN_FLAG_IMP:

 		/* Check for illegal multiple IMPLICIT tagging */

 		if (arg->imp_tag != -1)

 			{

 			ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING);

 			return -1;

 			}

 		if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_EXP:

 		if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))

 			return -1;

 		if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_SEQWRAP:

 		if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_SETWRAP:

 		if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_BITWRAP:

 		if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_OCTWRAP:

 		if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))

 			return -1;

 		break;

 		case ASN1_GEN_FLAG_FORMAT:

 		if (!strncmp(vstart, "ASCII", 5))

 			arg->format = ASN1_GEN_FORMAT_ASCII;

 		else if (!strncmp(vstart, "UTF8", 4))

 			arg->format = ASN1_GEN_FORMAT_UTF8;

 		else if (!strncmp(vstart, "HEX", 3))

 			arg->format = ASN1_GEN_FORMAT_HEX;

 		else if (!strncmp(vstart, "BITLIST", 3))

 			arg->format = ASN1_GEN_FORMAT_BITLIST;

 		else

 			{

 			ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKOWN_FORMAT);

 			return -1;

 			}

 		break;

 		}

 	return 1;

 	}

 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)

 	{

 	char erch[2];

 	long tag_num;

 	char *eptr;

 	if (!vstart)

 		return 0;

 	tag_num = strtoul(vstart, &eptr, 10);

 	/* Check we haven't gone past max length: should be impossible */

 	if (eptr && *eptr && (eptr > vstart + vlen))

 		return 0;

 	if (tag_num < 0)

 		{

 		ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER);

 		return 0;

 		}

 	*ptag = tag_num;

 	/* If we have non numeric characters, parse them */

 	if (eptr)

 		vlen -= eptr - vstart;

 	else 

 		vlen = 0;

 	if (vlen)

 		{

 		switch (*eptr)

 			{

 			case 'U':

 			*pclass = V_ASN1_UNIVERSAL;

 			break;

 			case 'A':

 			*pclass = V_ASN1_APPLICATION;

 			break;

 			case 'P':

 			*pclass = V_ASN1_PRIVATE;

 			break;

 			case 'C':

 			*pclass = V_ASN1_CONTEXT_SPECIFIC;

 			break;

 			default:

 			erch[0] = *eptr;

 			erch[1] = 0;

 			ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER);

 			ERR_add_error_data(2, "Char=", erch);

 			return 0;

 			break;

 			}

 		}

 	else

 		*pclass = V_ASN1_CONTEXT_SPECIFIC;

 	return 1;

 	}

 /* Handle multiple types: SET and SEQUENCE */

 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf)

 	{

 	ASN1_TYPE *ret = NULL, *typ = NULL;

 	STACK_OF(ASN1_TYPE) *sk = NULL;

 	STACK_OF(CONF_VALUE) *sect = NULL;

 	unsigned char *der = NULL, *p;

 	int derlen;

 	int i, is_set;

 	sk = sk_ASN1_TYPE_new_null();

 	if (section)

 		{

 		if (!cnf)

 			goto bad;

 		sect = X509V3_get_section(cnf, (char *)section);

 		if (!sect)

 			goto bad;

 		for (i = 0; i < sk_CONF_VALUE_num(sect); i++)

 			{

 			typ = ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf);

 			if (!typ)

 				goto bad;

 			sk_ASN1_TYPE_push(sk, typ);

 			typ = NULL;

 			}

 		}

 	/* Now we has a STACK of the components, convert to the correct form */

 	if (utype == V_ASN1_SET)

 		is_set = 1;

 	else

 		is_set = 0;

 	derlen = i2d_ASN1_SET_OF_ASN1_TYPE(sk, NULL, i2d_ASN1_TYPE, utype,

 					   V_ASN1_UNIVERSAL, is_set);

 	der = OPENSSL_malloc(derlen);

 #ifdef SYMBIAN

   if(der==NULL)

   {

   	return NULL;

   }	

 #endif

 	p = der;

 	i2d_ASN1_SET_OF_ASN1_TYPE(sk, &p, i2d_ASN1_TYPE, utype,

 				  V_ASN1_UNIVERSAL, is_set);

 	if (!(ret = ASN1_TYPE_new()))

 		goto bad;

 	if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))

 		goto bad;

 	ret->type = utype;

 	ret->value.asn1_string->data = der;

 	ret->value.asn1_string->length = derlen;

 	der = NULL;

 	bad:

 	if (der)

 		OPENSSL_free(der);

 	if (sk)

 		sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);

 	if (typ)

 		ASN1_TYPE_free(typ);

 	if (sect)

 		X509V3_section_free(cnf, sect);

 	return ret;

 	}

 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok)

 	{

 	tag_exp_type *exp_tmp;

 	/* Can only have IMPLICIT if permitted */

 	if ((arg->imp_tag != -1) && !imp_ok)

 		{

 		ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG);

 		return 0;

 		}

 	if (arg->exp_count == ASN1_FLAG_EXP_MAX)

 		{

 		ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED);

 		return 0;

 		}

 	exp_tmp = &arg->exp_list[arg->exp_count++];

 	/* If IMPLICIT set tag to implicit value then

 	 * reset implicit tag since it has been used.

 	 */

 	if (arg->imp_tag != -1)

 		{

 		exp_tmp->exp_tag = arg->imp_tag;

 		exp_tmp->exp_class = arg->imp_class;

 		arg->imp_tag = -1;

 		arg->imp_class = -1;

 		}

 	else

 		{

 		exp_tmp->exp_tag = exp_tag;

 		exp_tmp->exp_class = exp_class;

 		}

 	exp_tmp->exp_constructed = exp_constructed;

 	exp_tmp->exp_pad = exp_pad;

 	return 1;

 	}

 #ifdef  EMULATOR

 GET_STATIC_VAR_FROM_TLS(tntmp,asn1_gen,struct tag_name_st*)

 #define tntmp (*GET_WSD_VAR_NAME(tntmp,asn1_gen,s)())

 static const struct tag_name_st tnst [] = {

 		ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),

 		ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),

 		ASN1_GEN_STR("NULL", V_ASN1_NULL),

 		ASN1_GEN_STR("INT", V_ASN1_INTEGER),

 		ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),

 		ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),

 		ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),

 		ASN1_GEN_STR("OID", V_ASN1_OBJECT),

 		ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),

 		ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),

 		ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),

 		ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),

 		ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),

 		ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),

 		ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),

 		ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),

 		ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),

 		ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),

 		ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),

 		ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),

 		ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),

 		ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),

 		ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),

 		ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),

 		ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),

 		ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),

 		ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),

 		ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),

 		ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),

 		ASN1_GEN_STR("T61", V_ASN1_T61STRING),

 		ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),

 		ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),

 		ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),

 		ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),

 		/* Special cases */

 		ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),

 		ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),

 		ASN1_GEN_STR("SET", V_ASN1_SET),

 		/* type modifiers */

 		/* Explicit tag */

 		ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),

 		ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),

 		/* Implicit tag */

 		ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),

 		ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),

 		/* OCTET STRING wrapper */

 		ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),

 		/* SEQUENCE wrapper */

 		ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),

 		/* SET wrapper */

 		ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),

 		/* BIT STRING wrapper */

 		ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),

 		ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),

 		ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),

 	};

 #endif

 static int asn1_str2tag(const char *tagstr, int len)

 	{

 	unsigned int i;

 #ifndef EMULATOR	

 	static struct tag_name_st *tntmp, tnst [] = {

 		ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),

 		ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),

 		ASN1_GEN_STR("NULL", V_ASN1_NULL),

 		ASN1_GEN_STR("INT", V_ASN1_INTEGER),

 		ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),

 		ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),

 		ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),

 		ASN1_GEN_STR("OID", V_ASN1_OBJECT),

 		ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),

 		ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),

 		ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),

 		ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),

 		ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),

 		ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),

 		ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),

 		ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),

 		ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),

 		ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),

 		ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),

 		ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),

 		ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),

 		ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),

 		ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),

 		ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),

 		ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),

 		ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),

 		ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),

 		ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),

 		ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),

 		ASN1_GEN_STR("T61", V_ASN1_T61STRING),

 		ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),

 		ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),

 		ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),

 		ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),

 		/* Special cases */

 		ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),

 		ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),

 		ASN1_GEN_STR("SET", V_ASN1_SET),

 		/* type modifiers */

 		/* Explicit tag */

 		ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),

 		ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),

 		/* Implicit tag */

 		ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),

 		ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),

 		/* OCTET STRING wrapper */

 		ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),

 		/* SEQUENCE wrapper */

 		ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),

 		/* SET wrapper */

 		ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),

 		/* BIT STRING wrapper */

 		ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),

 		ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),

 		ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),

 	};

 #endif //EMULATOR

 	if (len == -1)

 		len = strlen(tagstr);

 #ifndef EMULATOR	

 	tntmp = tnst;

 #else

     tntmp =(struct tag_name_st *) tnst;

 #endif		

 	for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++)

 		{

 		if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))

 			return tntmp->tag;

 		}

 	return -1;

 	}

 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)

 	{

 	ASN1_TYPE *atmp = NULL;

 	CONF_VALUE vtmp;

 	unsigned char *rdata;

 	long rdlen;

 	int no_unused = 1;

 	if (!(atmp = ASN1_TYPE_new()))

 		{

 		ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);

 		return NULL;

 		}

 	if (!str)

 		str = "";

 	switch(utype)

 		{

 		case V_ASN1_NULL:

 		if (str && *str)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE);

 			goto bad_form;

 			}

 		break;

 		case V_ASN1_BOOLEAN:

 		if (format != ASN1_GEN_FORMAT_ASCII)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);

 			goto bad_form;

 			}

 		vtmp.name = NULL;

 		vtmp.section = NULL;

 		vtmp.value = (char *)str;

 		if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);

 			goto bad_str;

 			}

 		break;

 		case V_ASN1_INTEGER:

 		case V_ASN1_ENUMERATED:

 		if (format != ASN1_GEN_FORMAT_ASCII)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT);

 			goto bad_form;

 			}

 		if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str)))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);

 			goto bad_str;

 			}

 		break;

 		case V_ASN1_OBJECT:

 		if (format != ASN1_GEN_FORMAT_ASCII)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT);

 			goto bad_form;

 			}

 		if (!(atmp->value.object = OBJ_txt2obj(str, 0)))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);

 			goto bad_str;

 			}

 		break;

 		case V_ASN1_UTCTIME:

 		case V_ASN1_GENERALIZEDTIME:

 		if (format != ASN1_GEN_FORMAT_ASCII)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT);

 			goto bad_form;

 			}

 		if (!(atmp->value.asn1_string = ASN1_STRING_new()))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);

 			goto bad_str;

 			}

 		if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);

 			goto bad_str;

 			}

 		atmp->value.asn1_string->type = utype;

 		if (!ASN1_TIME_check(atmp->value.asn1_string))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_TIME_VALUE);

 			goto bad_str;

 			}

 		break;

 		case V_ASN1_BMPSTRING:

 		case V_ASN1_PRINTABLESTRING:

 		case V_ASN1_IA5STRING:

 		case V_ASN1_T61STRING:

 		case V_ASN1_UTF8STRING:

 		case V_ASN1_VISIBLESTRING:

 		case V_ASN1_UNIVERSALSTRING:

 		case V_ASN1_GENERALSTRING:

 		if (format == ASN1_GEN_FORMAT_ASCII)

 			format = MBSTRING_ASC;

 		else if (format == ASN1_GEN_FORMAT_UTF8)

 			format = MBSTRING_UTF8;

 		else

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);

 			goto bad_form;

 			}

 		if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,

 						-1, format, ASN1_tag2bit(utype)) <= 0)

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);

 			goto bad_str;

 			}

 		break;

 		case V_ASN1_BIT_STRING:

 		case V_ASN1_OCTET_STRING:

 		if (!(atmp->value.asn1_string = ASN1_STRING_new()))

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);

 			goto bad_form;

 			}

 		if (format == ASN1_GEN_FORMAT_HEX)

 			{

 			if (!(rdata = string_to_hex((char *)str, &rdlen)))

 				{

 				ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_HEX);

 				goto bad_str;

 				}

 			atmp->value.asn1_string->data = rdata;

 			atmp->value.asn1_string->length = rdlen;

 			atmp->value.asn1_string->type = utype;

 			}

 		else if (format == ASN1_GEN_FORMAT_ASCII)

 			ASN1_STRING_set(atmp->value.asn1_string, str, -1);

 		else if ((format == ASN1_GEN_FORMAT_BITLIST) && (utype == V_ASN1_BIT_STRING))

 			{

 			if (!CONF_parse_list(str, ',', 1, bitstr_cb, atmp->value.bit_string))

 				{

 				ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR);

 				goto bad_str;

 				}

 			no_unused = 0;

 			}

 		else 

 			{

 			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BITSTRING_FORMAT);

 			goto bad_form;

 			}

 		if ((utype == V_ASN1_BIT_STRING) && no_unused)

 			{

 			atmp->value.asn1_string->flags

 				&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);

         		atmp->value.asn1_string->flags

 				|= ASN1_STRING_FLAG_BITS_LEFT;

 			}

 		break;

 		default:

 		ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);

 		goto bad_str;

 		break;

 		}

 	atmp->type = utype;

 	return atmp;

 	bad_str:

 	ERR_add_error_data(2, "string=", str);

 	bad_form:

 	ASN1_TYPE_free(atmp);

 	return NULL;

 	}

 static int bitstr_cb(const char *elem, int len, void *bitstr)

 	{

 	long bitnum;

 	char *eptr;

 	if (!elem)

 		return 0;

 	bitnum = strtoul(elem, &eptr, 10);

 	if (eptr && *eptr && (eptr != elem + len))

 		return 0;

 	if (bitnum < 0)

 		{

 		ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER);

 		return 0;

 		}

 	if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1))

 		{

 		ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE);

 		return 0;

 		}

 	return 1;

 	}