/* crypto/asn1/a_print.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 <openssl/asn1.h>

 EXPORT_C int ASN1_PRINTABLE_type(const unsigned char *s, int len)

 	{

 	int c;

 	int ia5=0;

 	int t61=0;

 	if (len <= 0) len= -1;

 	if (s == NULL) return(V_ASN1_PRINTABLESTRING);

 	while ((*s) && (len-- != 0))

 		{

 		c= *(s++);

 #ifndef CHARSET_EBCDIC

 		if (!(	((c >= 'a') && (c <= 'z')) ||

 			((c >= 'A') && (c <= 'Z')) ||

 			(c == ' ') ||

 			((c >= '0') && (c <= '9')) ||

 			(c == ' ') || (c == '\'') ||

 			(c == '(') || (c == ')') ||

 			(c == '+') || (c == ',') ||

 			(c == '-') || (c == '.') ||

 			(c == '/') || (c == ':') ||

 			(c == '=') || (c == '?')))

 			ia5=1;

 		if (c&0x80)

 			t61=1;

 #else

 		if (!isalnum(c) && (c != ' ') &&

 		    strchr("'()+,-./:=?", c) == NULL)

 			ia5=1;

 		if (os_toascii[c] & 0x80)

 			t61=1;

 #endif

 		}

 	if (t61) return(V_ASN1_T61STRING);

 	if (ia5) return(V_ASN1_IA5STRING);

 	return(V_ASN1_PRINTABLESTRING);

 	}

 EXPORT_C int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s)

 	{

 	int i;

 	unsigned char *p;

 	if (s->type != V_ASN1_UNIVERSALSTRING) return(0);

 	if ((s->length%4) != 0) return(0);

 	p=s->data;

 	for (i=0; i<s->length; i+=4)

 		{

 		if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0'))

 			break;

 		else

 			p+=4;

 		}

 	if (i < s->length) return(0);

 	p=s->data;

 	for (i=3; i<s->length; i+=4)

 		{

 		*(p++)=s->data[i];

 		}

 	*(p)='\0';

 	s->length/=4;

 	s->type=ASN1_PRINTABLE_type(s->data,s->length);

 	return(1);

 	}