crypto/asn1/a_print.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #include <stdio.h>
  59 #include "internal/cryptlib.h"
  60 #include <openssl/asn1.h>
  61
  62 int ASN1_PRINTABLE_type(const unsigned char *s, int len)
  63 {
  64     int c;
  65     int ia5 = 0;
  66     int t61 = 0;
  67
  68     if (len <= 0)
  69         len = -1;
  70     if (s == NULL)
  71         return (V_ASN1_PRINTABLESTRING);
  72
  73     while ((*s) && (len-- != 0)) {
  74         c = *(s++);
  75 #ifndef CHARSET_EBCDIC
  76         if (!(((c >= 'a') && (c <= 'z')) ||
  77               ((c >= 'A') && (c <= 'Z')) ||
  78               ((c >= '0') && (c <= '9')) ||
  79               (c == ' ') || (c == '\'') ||
  80               (c == '(') || (c == ')') ||
  81               (c == '+') || (c == ',') ||
  82               (c == '-') || (c == '.') ||
  83               (c == '/') || (c == ':') || (c == '=') || (c == '?')))
  84             ia5 = 1;
  85         if (c & 0x80)
  86             t61 = 1;
  87 #else
  88         if (!isalnum(c) && (c != ' ') && strchr("'()+,-./:=?", c) == NULL)
  89             ia5 = 1;
  90         if (os_toascii[c] & 0x80)
  91             t61 = 1;
  92 #endif
  93     }
  94     if (t61)
  95         return (V_ASN1_T61STRING);
  96     if (ia5)
  97         return (V_ASN1_IA5STRING);
  98     return (V_ASN1_PRINTABLESTRING);
  99 }
 100
 101 int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s)
 102 {
 103     int i;
 104     unsigned char *p;
 105
 106     if (s->type != V_ASN1_UNIVERSALSTRING)
 107         return (0);
 108     if ((s->length % 4) != 0)
 109         return (0);
 110     p = s->data;
 111     for (i = 0; i < s->length; i += 4) {
 112         if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0'))
 113             break;
 114         else
 115             p += 4;
 116     }
 117     if (i < s->length)
 118         return (0);
 119     p = s->data;
 120     for (i = 3; i < s->length; i += 4) {
 121         *(p++) = s->data[i];
 122     }
 123     *(p) = '\0';
 124     s->length /= 4;
 125     s->type = ASN1_PRINTABLE_type(s->data, s->length);
 126     return (1);
 127 }
 128
 129 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
 130 {
 131     int i, n;
 132     char buf[80];
 133     const char *p;
 134
 135     if (v == NULL)
 136         return (0);
 137     n = 0;
 138     p = (const char *)v->data;
 139     for (i = 0; i < v->length; i++) {
 140         if ((p[i] > '~') || ((p[i] < ' ') &&
 141                              (p[i] != '\n') && (p[i] != '\r')))
 142             buf[n] = '.';
 143         else
 144             buf[n] = p[i];
 145         n++;
 146         if (n >= 80) {
 147             if (BIO_write(bp, buf, n) <= 0)
 148                 return (0);
 149             n = 0;
 150         }
 151     }
 152     if (n > 0)
 153         if (BIO_write(bp, buf, n) <= 0)
 154             return (0);
 155     return (1);
 156 }