crypto/ctype.c

   1 /*
   2  * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   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>
  11 #include <stdio.h>
  12 #include "crypto/ctype.h"
  13 #include <openssl/ebcdic.h>
  14
  15 #include "internal/e_os.h"
  16 #include "internal/core.h"
  17
  18 #ifndef OPENSSL_SYS_WINDOWS
  19 #include <strings.h>
  20 #endif
  21 #include <locale.h>
  22
  23 #ifdef OPENSSL_SYS_MACOSX
  24 #include <xlocale.h>
  25 #endif
  26
  27 /*
  28  * Define the character classes for each character in the seven bit ASCII
  29  * character set.  This is independent of the host's character set, characters
  30  * are converted to ASCII before being used as an index in to this table.
  31  * Characters outside of the seven bit ASCII range are detected before indexing.
  32  */
  33 static const unsigned short ctype_char_map[128] = {
  34    /* 00 nul */ CTYPE_MASK_cntrl,
  35    /* 01 soh */ CTYPE_MASK_cntrl,
  36    /* 02 stx */ CTYPE_MASK_cntrl,
  37    /* 03 etx */ CTYPE_MASK_cntrl,
  38    /* 04 eot */ CTYPE_MASK_cntrl,
  39    /* 05 enq */ CTYPE_MASK_cntrl,
  40    /* 06 ack */ CTYPE_MASK_cntrl,
  41    /* 07 \a  */ CTYPE_MASK_cntrl,
  42    /* 08 \b  */ CTYPE_MASK_cntrl,
  43    /* 09 \t  */ CTYPE_MASK_blank | CTYPE_MASK_cntrl | CTYPE_MASK_space,
  44    /* 0A \n  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
  45    /* 0B \v  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
  46    /* 0C \f  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
  47    /* 0D \r  */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
  48    /* 0E so  */ CTYPE_MASK_cntrl,
  49    /* 0F si  */ CTYPE_MASK_cntrl,
  50    /* 10 dle */ CTYPE_MASK_cntrl,
  51    /* 11 dc1 */ CTYPE_MASK_cntrl,
  52    /* 12 dc2 */ CTYPE_MASK_cntrl,
  53    /* 13 dc3 */ CTYPE_MASK_cntrl,
  54    /* 14 dc4 */ CTYPE_MASK_cntrl,
  55    /* 15 nak */ CTYPE_MASK_cntrl,
  56    /* 16 syn */ CTYPE_MASK_cntrl,
  57    /* 17 etb */ CTYPE_MASK_cntrl,
  58    /* 18 can */ CTYPE_MASK_cntrl,
  59    /* 19 em  */ CTYPE_MASK_cntrl,
  60    /* 1A sub */ CTYPE_MASK_cntrl,
  61    /* 1B esc */ CTYPE_MASK_cntrl,
  62    /* 1C fs  */ CTYPE_MASK_cntrl,
  63    /* 1D gs  */ CTYPE_MASK_cntrl,
  64    /* 1E rs  */ CTYPE_MASK_cntrl,
  65    /* 1F us  */ CTYPE_MASK_cntrl,
  66    /* 20     */ CTYPE_MASK_blank | CTYPE_MASK_print | CTYPE_MASK_space
  67                 | CTYPE_MASK_asn1print,
  68    /* 21  !  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  69    /* 22  "  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  70    /* 23  #  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  71    /* 24  $  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  72    /* 25  %  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  73    /* 26  &  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  74    /* 27  '  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  75                 | CTYPE_MASK_asn1print,
  76    /* 28  (  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  77                 | CTYPE_MASK_asn1print,
  78    /* 29  )  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  79                 | CTYPE_MASK_asn1print,
  80    /* 2A  *  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
  81    /* 2B  +  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  82                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  83    /* 2C  ,  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  84                 | CTYPE_MASK_asn1print,
  85    /* 2D  -  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  86                 | CTYPE_MASK_asn1print,
  87    /* 2E  .  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  88                 | CTYPE_MASK_asn1print,
  89    /* 2F  /  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
  90                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  91    /* 30  0  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
  92                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  93    /* 31  1  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
  94                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  95    /* 32  2  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
  96                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  97    /* 33  3  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
  98                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
  99    /* 34  4  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 100                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 101    /* 35  5  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 102                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 103    /* 36  6  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 104                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 105    /* 37  7  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 106                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 107    /* 38  8  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 108                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 109    /* 39  9  */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
 110                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 111    /* 3A  :  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
 112                 | CTYPE_MASK_asn1print,
 113    /* 3B  ;  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 114    /* 3C  <  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 115    /* 3D  =  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
 116                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 117    /* 3E  >  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 118    /* 3F  ?  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
 119                 | CTYPE_MASK_asn1print,
 120    /* 40  @  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 121    /* 41  A  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 122                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 123    /* 42  B  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 124                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 125    /* 43  C  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 126                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 127    /* 44  D  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 128                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 129    /* 45  E  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 130                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 131    /* 46  F  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 132                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 133    /* 47  G  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 134                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 135    /* 48  H  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 136                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 137    /* 49  I  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 138                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 139    /* 4A  J  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 140                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 141    /* 4B  K  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 142                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 143    /* 4C  L  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 144                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 145    /* 4D  M  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 146                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 147    /* 4E  N  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 148                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 149    /* 4F  O  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 150                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 151    /* 50  P  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 152                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 153    /* 51  Q  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 154                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 155    /* 52  R  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 156                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 157    /* 53  S  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 158                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 159    /* 54  T  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 160                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 161    /* 55  U  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 162                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 163    /* 56  V  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 164                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 165    /* 57  W  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 166                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 167    /* 58  X  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 168                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 169    /* 59  Y  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 170                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 171    /* 5A  Z  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
 172                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 173    /* 5B  [  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 174    /* 5C  \  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 175    /* 5D  ]  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 176    /* 5E  ^  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 177    /* 5F  _  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 178    /* 60  `  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 179    /* 61  a  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 180                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 181    /* 62  b  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 182                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 183    /* 63  c  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 184                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 185    /* 64  d  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 186                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 187    /* 65  e  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 188                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 189    /* 66  f  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 190                 | CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 191    /* 67  g  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 192                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 193    /* 68  h  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 194                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 195    /* 69  i  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 196                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 197    /* 6A  j  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 198                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 199    /* 6B  k  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 200                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 201    /* 6C  l  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 202                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 203    /* 6D  m  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 204                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 205    /* 6E  n  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 206                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 207    /* 6F  o  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 208                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 209    /* 70  p  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 210                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 211    /* 71  q  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 212                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 213    /* 72  r  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 214                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 215    /* 73  s  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 216                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 217    /* 74  t  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 218                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 219    /* 75  u  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 220                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 221    /* 76  v  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 222                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 223    /* 77  w  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 224                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 225    /* 78  x  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 226                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 227    /* 79  y  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 228                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 229    /* 7A  z  */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
 230                 | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
 231    /* 7B  {  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 232    /* 7C  |  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 233    /* 7D  }  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 234    /* 7E  ~  */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
 235    /* 7F del */ CTYPE_MASK_cntrl
 236 };
 237
 238 #ifdef CHARSET_EBCDIC
 239 int ossl_toascii(int c)
 240 {
 241     if (c < -128 || c > 256 || c == EOF)
 242         return c;
 243     /*
 244      * Adjust negatively signed characters.
 245      * This is not required for ASCII because any character that sign extends
 246      * is not seven bit and all of the checks are on the seven bit characters.
 247      * I.e. any check must fail on sign extension.
 248      */
 249     if (c < 0)
 250         c += 256;
 251     return os_toascii[c];
 252 }
 253
 254 int ossl_fromascii(int c)
 255 {
 256     if (c < -128 || c > 256 || c == EOF)
 257         return c;
 258     if (c < 0)
 259         c += 256;
 260     return os_toebcdic[c];
 261 }
 262 #endif
 263
 264 int ossl_ctype_check(int c, unsigned int mask)
 265 {
 266     const int max = sizeof(ctype_char_map) / sizeof(*ctype_char_map);
 267     const int a = ossl_toascii(c);
 268
 269     return a >= 0 && a < max && (ctype_char_map[a] & mask) != 0;
 270 }
 271
 272 #if defined(CHARSET_EBCDIC) && !defined(CHARSET_EBCDIC_TEST)
 273 static const int case_change = 0x40;
 274 #else
 275 static const int case_change = 0x20;
 276 #endif
 277
 278 int ossl_tolower(int c)
 279 {
 280     return ossl_isupper(c) ? c ^ case_change : c;
 281 }
 282
 283 int ossl_toupper(int c)
 284 {
 285     return ossl_islower(c) ? c ^ case_change : c;
 286 }
 287
 288 int ossl_ascii_isdigit(const char inchar) {
 289     if (inchar > 0x2F && inchar < 0x3A)
 290         return 1;
 291     return 0;
 292 }
 293
 294 /* str[n]casecmp_l is defined in POSIX 2008-01. Value is taken accordingly
 295  * https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html */
 296
 297 #if (defined OPENSSL_SYS_WINDOWS) || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200809L)
 298
 299 # if defined OPENSSL_SYS_WINDOWS
 300 # define locale_t _locale_t
 301 # define freelocale _free_locale
 302 # define strcasecmp_l _stricmp_l
 303 # define strncasecmp_l _strnicmp_l
 304 # endif
 305 static locale_t loc;
 306
 307 # ifndef FIPS_MODULE
 308 void *ossl_c_locale() {
 309     return (void *)loc;
 310 }
 311 # endif
 312
 313 int ossl_init_casecmp_int() {
 314 # ifdef OPENSSL_SYS_WINDOWS
 315     loc = _create_locale(LC_COLLATE, "C");
 316 # else
 317     loc = newlocale(LC_COLLATE_MASK, "C", (locale_t) 0);
 318 # endif
 319     return (loc == (locale_t) 0) ? 0 : 1;
 320 }
 321
 322 void ossl_deinit_casecmp() {
 323     freelocale(loc);
 324 }
 325
 326 int OPENSSL_strcasecmp(const char *s1, const char *s2)
 327 {
 328     return strcasecmp_l(s1, s2, (locale_t)ossl_c_locale());
 329 }
 330
 331 int OPENSSL_strncasecmp(const char *s1, const char *s2, size_t n)
 332 {
 333     return strncasecmp_l(s1, s2, n, (locale_t)ossl_c_locale());
 334 }
 335 #else
 336 # ifndef FIPS_MODULE
 337 void *ossl_c_locale() {
 338     return NULL;
 339 }
 340 # endif
 341
 342 int ossl_init_casecmp_int() {
 343     return 1;
 344 }
 345
 346 void ossl_deinit_casecmp() {
 347 }
 348
 349 int OPENSSL_strcasecmp(const char *s1, const char *s2)
 350 {
 351     return strcasecmp(s1, s2);
 352 }
 353
 354 int OPENSSL_strncasecmp(const char *s1, const char *s2, size_t n)
 355 {
 356     return strncasecmp(s1, s2, n);
 357 }
 358 #endif