crypto/asn1/a_print.c

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