[thirdparty/openssl.git] / crypto / ctype.c

/*
 * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <string.h>
#include <stdio.h>
#include "internal/ctype.h"
#include "openssl/ebcdic.h"

/*
 * Define the character classes for each character in the seven bit ASCII
 * character set.  This is independent of the host's character set, characters
 * are converted to ASCII before being used as an index in to this table.
 * Characters outside of the seven bit ASCII range are detected before indexing.
 */
static const unsigned short ctype_char_map[128] = {
   /* 00 nul */ CTYPE_MASK_cntrl,
   /* 01 soh */ CTYPE_MASK_cntrl,
   /* 02 stx */ CTYPE_MASK_cntrl,
   /* 03 etx */ CTYPE_MASK_cntrl,
   /* 04 eot */ CTYPE_MASK_cntrl,
   /* 05 enq */ CTYPE_MASK_cntrl,
   /* 06 ack */ CTYPE_MASK_cntrl,
   /* 07 \a  */ CTYPE_MASK_cntrl,
   /* 08 \b  */ CTYPE_MASK_cntrl,
   /* 09 \t  */ CTYPE_MASK_blank | CTYPE_MASK_cntrl | CTYPE_MASK_space,
   /* 0A \n  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
   /* 0B \v  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
   /* 0C \f  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
   /* 0D \r  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
   /* 0E so  */ CTYPE_MASK_cntrl,
   /* 0F si  */ CTYPE_MASK_cntrl,
   /* 10 dle */ CTYPE_MASK_cntrl,
   /* 11 dc1 */ CTYPE_MASK_cntrl,
   /* 12 dc2 */ CTYPE_MASK_cntrl,
   /* 13 dc3 */ CTYPE_MASK_cntrl,
   /* 14 dc4 */ CTYPE_MASK_cntrl,
   /* 15 nak */ CTYPE_MASK_cntrl,
   /* 16 syn */ CTYPE_MASK_cntrl,
   /* 17 etb */ CTYPE_MASK_cntrl,
   /* 18 can */ CTYPE_MASK_cntrl,
   /* 19 em  */ CTYPE_MASK_cntrl,
   /* 1A sub */ CTYPE_MASK_cntrl,
   /* 1B esc */ CTYPE_MASK_cntrl,
   /* 1C fs  */ CTYPE_MASK_cntrl,
   /* 1D gs  */ CTYPE_MASK_cntrl,
   /* 1E rs  */ CTYPE_MASK_cntrl,
   /* 1F us  */ CTYPE_MASK_cntrl,
   /* 20     */ CTYPE_MASK_blank | CTYPE_MASK_print | CTYPE_MASK_space
                | CTYPE_MASK_asn1print,
   /* 21  !  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 22  "  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 23  #  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 24  $  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 25  %  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 26  &  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 27  '  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 28  (  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 29  )  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 2A  *  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 2B  +  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 2C  ,  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 2D  -  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 2E  .  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 2F  /  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 30  0  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 31  1  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 32  2  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 33  3  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 34  4  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 35  5  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 36  6  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 37  7  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 38  8  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 39  9  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 3A  :  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 3B  ;  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 3C  <  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 3D  =  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 3E  >  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 3F  ?  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
                | CTYPE_MASK_asn1print,
   /* 40  @  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 41  A  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 42  B  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 43  C  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 44  D  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 45  E  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 46  F  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 47  G  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 48  H  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 49  I  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4A  J  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4B  K  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4C  L  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4D  M  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4E  N  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 4F  O  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 50  P  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 51  Q  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 52  R  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 53  S  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 54  T  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 55  U  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 56  V  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 57  W  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 58  X  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 59  Y  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 5A  Z  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 5B  [  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 5C  \  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 5D  ]  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 5E  ^  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 5F  _  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 60  `  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 61  a  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 62  b  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 63  c  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 64  d  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 65  e  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 66  f  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 67  g  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 68  h  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 69  i  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6A  j  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6B  k  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6C  l  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6D  m  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6E  n  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 6F  o  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 70  p  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 71  q  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 72  r  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 73  s  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 74  t  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 75  u  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 76  v  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 77  w  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 78  x  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 79  y  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 7A  z  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
                | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
   /* 7B  {  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 7C  |  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 7D  }  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 7E  ~  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
   /* 7F del */ CTYPE_MASK_cntrl
};

#ifdef CHARSET_EBCDIC
int ossl_toascii(int c)
{
    if (c < -128 || c > 256 || c == EOF)
        return c;
    /*
     * Adjust negatively signed characters.
     * This is not required for ASCII because any character that sign extends
     * is not seven bit and all of the checks are on the seven bit characters.
     * I.e. any check must fail on sign extension.
     */
    if (c < 0)
        c += 256;
    return os_toascii[c];
}

int ossl_fromascii(int c)
{
    if (c < -128 || c > 256 || c == EOF)
        return c;
    if (c < 0)
        c += 256;
    return os_toebcdic[c];
}
#endif

int ossl_ctype_check(int c, unsigned int mask)
{
    const int max = sizeof(ctype_char_map) / sizeof(*ctype_char_map);
    const int a = ossl_toascii(c);

    return a >= 0 && a < max && (ctype_char_map[a] & mask) != 0;
}

#if defined(CHARSET_EBCDIC) && !defined(CHARSET_EBCDIC_TEST)
static const int case_change = 0x40;
#else
static const int case_change = 0x20;
#endif

int ossl_tolower(int c)
{
    return ossl_isupper(c) ? c ^ case_change : c;
}

int ossl_toupper(int c)
{
    return ossl_islower(c) ? c ^ case_change : c;
}

int ascii_isdigit(const char inchar) {
    if (inchar > 0x2F && inchar < 0x3A)
        return 1;
    return 0;
}
Commit	Line	Data
a1df06b3 P	1	/*
	2	* Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
	3	*
0e9725bc	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
a1df06b3 P	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
	8	*/
	9
	10	#include <string.h>
678c462e	11	#include <stdio.h>
a1df06b3 P	12	#include "internal/ctype.h"
	13	#include "openssl/ebcdic.h"
	14
	15	/*
	16	* Define the character classes for each character in the seven bit ASCII
	17	* character set. This is independent of the host's character set, characters
	18	* are converted to ASCII before being used as an index in to this table.
	19	* Characters outside of the seven bit ASCII range are detected before indexing.
	20	*/
	21	static const unsigned short ctype_char_map[128] = {
	22	/* 00 nul */ CTYPE_MASK_cntrl,
	23	/* 01 soh */ CTYPE_MASK_cntrl,
	24	/* 02 stx */ CTYPE_MASK_cntrl,
	25	/* 03 etx */ CTYPE_MASK_cntrl,
	26	/* 04 eot */ CTYPE_MASK_cntrl,
	27	/* 05 enq */ CTYPE_MASK_cntrl,
	28	/* 06 ack */ CTYPE_MASK_cntrl,
	29	/* 07 \a */ CTYPE_MASK_cntrl,
	30	/* 08 \b */ CTYPE_MASK_cntrl,
	31	/* 09 \t */ CTYPE_MASK_blank \| CTYPE_MASK_cntrl \| CTYPE_MASK_space,
	32	/* 0A \n */ CTYPE_MASK_cntrl \| CTYPE_MASK_space,
	33	/* 0B \v */ CTYPE_MASK_cntrl \| CTYPE_MASK_space,
	34	/* 0C \f */ CTYPE_MASK_cntrl \| CTYPE_MASK_space,
	35	/* 0D \r */ CTYPE_MASK_cntrl \| CTYPE_MASK_space,
	36	/* 0E so */ CTYPE_MASK_cntrl,
	37	/* 0F si */ CTYPE_MASK_cntrl,
	38	/* 10 dle */ CTYPE_MASK_cntrl,
	39	/* 11 dc1 */ CTYPE_MASK_cntrl,
	40	/* 12 dc2 */ CTYPE_MASK_cntrl,
	41	/* 13 dc3 */ CTYPE_MASK_cntrl,
	42	/* 14 dc4 */ CTYPE_MASK_cntrl,
	43	/* 15 nak */ CTYPE_MASK_cntrl,
	44	/* 16 syn */ CTYPE_MASK_cntrl,
	45	/* 17 etb */ CTYPE_MASK_cntrl,
	46	/* 18 can */ CTYPE_MASK_cntrl,
	47	/* 19 em */ CTYPE_MASK_cntrl,
	48	/* 1A sub */ CTYPE_MASK_cntrl,
	49	/* 1B esc */ CTYPE_MASK_cntrl,
	50	/* 1C fs */ CTYPE_MASK_cntrl,
	51	/* 1D gs */ CTYPE_MASK_cntrl,
	52	/* 1E rs */ CTYPE_MASK_cntrl,
	53	/* 1F us */ CTYPE_MASK_cntrl,
	54	/* 20 */ CTYPE_MASK_blank \| CTYPE_MASK_print \| CTYPE_MASK_space
	55	\| CTYPE_MASK_asn1print,
	56	/* 21 ! */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	57	/* 22 " */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	58	/* 23 # */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	59	/* 24 $ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	60	/* 25 % */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	61	/* 26 & */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	62	/* 27 ' */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	63	\| CTYPE_MASK_asn1print,
	64	/* 28 ( */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	65	\| CTYPE_MASK_asn1print,
	66	/* 29 ) */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	67	\| CTYPE_MASK_asn1print,
	68	/* 2A * */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
	69	/* 2B + */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	70	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
	71	/* 2C , */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	72	\| CTYPE_MASK_asn1print,
	73	/* 2D - */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
	74	\| CTYPE_MASK_asn1print,
	75	/* 2E . */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
76	\| CTYPE_MASK_asn1print,
77	/* 2F / */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
78	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
79	/* 30 0 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
80	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
81	/* 31 1 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
82	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
83	/* 32 2 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
84	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
85	/* 33 3 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
86	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
87	/* 34 4 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
88	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
89	/* 35 5 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
90	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
91	/* 36 6 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
92	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
93	/* 37 7 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
94	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
95	/* 38 8 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
96	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
97	/* 39 9 */ CTYPE_MASK_digit \| CTYPE_MASK_graph \| CTYPE_MASK_print
98	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
99	/* 3A : */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
100	\| CTYPE_MASK_asn1print,
101	/* 3B ; */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
102	/* 3C < */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
103	/* 3D = */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
104	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
105	/* 3E > */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
106	/* 3F ? */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct
107	\| CTYPE_MASK_asn1print,
108	/* 40 @ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
109	/* 41 A */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
110	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
111	/* 42 B */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
112	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
113	/* 43 C */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
114	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
115	/* 44 D */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
116	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
117	/* 45 E */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
118	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
119	/* 46 F */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
120	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
121	/* 47 G */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
122	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
123	/* 48 H */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
124	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
125	/* 49 I */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
126	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
127	/* 4A J */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
128	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
129	/* 4B K */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
130	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
131	/* 4C L */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
132	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
133	/* 4D M */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
134	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
135	/* 4E N */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
136	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
137	/* 4F O */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
138	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
139	/* 50 P */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
140	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
141	/* 51 Q */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
142	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
143	/* 52 R */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
144	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
145	/* 53 S */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
146	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
147	/* 54 T */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
148	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
149	/* 55 U */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
150	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
151	/* 56 V */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
152	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
153	/* 57 W */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
154	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
155	/* 58 X */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
156	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
157	/* 59 Y */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
158	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
159	/* 5A Z */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_upper
160	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
161	/* 5B [ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
162	/* 5C \ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
163	/* 5D ] */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
164	/* 5E ^ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
165	/* 5F _ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
166	/* 60 ` */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
167	/* 61 a */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
168	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
169	/* 62 b */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
170	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
171	/* 63 c */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
172	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
173	/* 64 d */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
174	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
175	/* 65 e */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
176	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
177	/* 66 f */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
178	\| CTYPE_MASK_xdigit \| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
179	/* 67 g */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
180	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
181	/* 68 h */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
182	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
183	/* 69 i */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
184	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
185	/* 6A j */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
186	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
187	/* 6B k */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
188	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
189	/* 6C l */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
190	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
191	/* 6D m */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
192	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
193	/* 6E n */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
194	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
195	/* 6F o */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
196	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
197	/* 70 p */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
198	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
199	/* 71 q */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
200	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
201	/* 72 r */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
202	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
203	/* 73 s */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
204	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
205	/* 74 t */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
206	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
207	/* 75 u */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
208	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
209	/* 76 v */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
210	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
211	/* 77 w */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
212	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
213	/* 78 x */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
214	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
215	/* 79 y */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
216	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
217	/* 7A z */ CTYPE_MASK_graph \| CTYPE_MASK_lower \| CTYPE_MASK_print
218	\| CTYPE_MASK_base64 \| CTYPE_MASK_asn1print,
219	/* 7B { */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
220	/* 7C \| */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
221	/* 7D } */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
222	/* 7E ~ */ CTYPE_MASK_graph \| CTYPE_MASK_print \| CTYPE_MASK_punct,
223	/* 7F del */ CTYPE_MASK_cntrl
224	};
225
226	#ifdef CHARSET_EBCDIC
227	int ossl_toascii(int c)
228	{
678c462e	229	if (c < -128 \|\| c > 256 \|\| c == EOF)
a1df06b3 P	230	return c;
	231	/*
	232	* Adjust negatively signed characters.
	233	* This is not required for ASCII because any character that sign extends
	234	* is not seven bit and all of the checks are on the seven bit characters.
	235	* I.e. any check must fail on sign extension.
	236	*/
	237	if (c < 0)
	238	c += 256;
	239	return os_toascii[c];
	240	}
	241
	242	int ossl_fromascii(int c)
	243	{
678c462e	244	if (c < -128 \|\| c > 256 \|\| c == EOF)
a1df06b3 P	245	return c;
	246	if (c < 0)
	247	c += 256;
	248	return os_toebcdic[c];
	249	}
	250	#endif
	251
	252	int ossl_ctype_check(int c, unsigned int mask)
	253	{
	254	const int max = sizeof(ctype_char_map) / sizeof(*ctype_char_map);
932c0df2	255	const int a = ossl_toascii(c);
a1df06b3	256
932c0df2	257	return a >= 0 && a < max && (ctype_char_map[a] & mask) != 0;
a1df06b3 P	258	}
	259
	260	#if defined(CHARSET_EBCDIC) && !defined(CHARSET_EBCDIC_TEST)
	261	static const int case_change = 0x40;
	262	#else
	263	static const int case_change = 0x20;
	264	#endif
	265
	266	int ossl_tolower(int c)
	267	{
	268	return ossl_isupper(c) ? c ^ case_change : c;
	269	}
	270
	271	int ossl_toupper(int c)
	272	{
	273	return ossl_islower(c) ? c ^ case_change : c;
	274	}
48102247	275
	276	int ascii_isdigit(const char inchar) {
	277	if (inchar > 0x2F && inchar < 0x3A)
	278	return 1;
	279	return 0;
	280	}