a_print.c revision 296465 
1/* crypto/asn1/a_print.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 <openssl/asn1.h>
62
63int ASN1_PRINTABLE_type(const unsigned char *s, int len)
64{
65    int c;
66    int ia5 = 0;
67    int t61 = 0;
68
69    if (len <= 0)
70        len = -1;
71    if (s == NULL)
72        return (V_ASN1_PRINTABLESTRING);
73
74    while ((*s) && (len-- != 0)) {
75        c = *(s++);
76#ifndef CHARSET_EBCDIC
77        if (!(((c >= 'a') && (c <= 'z')) ||
78              ((c >= 'A') && (c <= 'Z')) ||
79              (c == ' ') ||
80              ((c >= '0') && (c <= '9')) ||
81              (c == ' ') || (c == '\'') ||
82              (c == '(') || (c == ')') ||
83              (c == '+') || (c == ',') ||
84              (c == '-') || (c == '.') ||
85              (c == '/') || (c == ':') || (c == '=') || (c == '?')))
86            ia5 = 1;
87        if (c & 0x80)
88            t61 = 1;
89#else
90        if (!isalnum(c) && (c != ' ') && strchr("'()+,-./:=?", c) == NULL)
91            ia5 = 1;
92        if (os_toascii[c] & 0x80)
93            t61 = 1;
94#endif
95    }
96    if (t61)
97        return (V_ASN1_T61STRING);
98    if (ia5)
99        return (V_ASN1_IA5STRING);
100    return (V_ASN1_PRINTABLESTRING);
101}
102
103int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s)
104{
105    int i;
106    unsigned char *p;
107
108    if (s->type != V_ASN1_UNIVERSALSTRING)
109        return (0);
110    if ((s->length % 4) != 0)
111        return (0);
112    p = s->data;
113    for (i = 0; i < s->length; i += 4) {
114        if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0'))
115            break;
116        else
117            p += 4;
118    }
119    if (i < s->length)
120        return (0);
121    p = s->data;
122    for (i = 3; i < s->length; i += 4) {
123        *(p++) = s->data[i];
124    }
125    *(p) = '\0';
126    s->length /= 4;
127    s->type = ASN1_PRINTABLE_type(s->data, s->length);
128    return (1);
129}
130