/* 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>

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);

}

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);

}