1 /*
   2  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   4  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28 
  29 #include "lint.h"
  30 #include <limits.h>
  31 #include <stddef.h>
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <errno.h>
  36 #include "ldpart.h"
  37 #include "lmonetary.h"
  38 #include "localeimpl.h"
  39 
  40 extern const char *__fix_locale_grouping_str(const char *);
  41 
  42 #define LCMONETARY_SIZE_FULL (sizeof (struct lc_monetary) / sizeof (char *))
  43 #define LCMONETARY_SIZE_MIN \
  44         (offsetof(struct lc_monetary, int_p_cs_precedes) / sizeof (char *))
  45 
  46 static char     empty[] = "";
  47 static char     numempty[] = { CHAR_MAX, '\0' };
  48 
  49 struct lc_monetary lc_monetary_posix = {
  50         empty,          /* int_curr_symbol */
  51         empty,          /* currency_symbol */
  52         empty,          /* mon_decimal_point */
  53         empty,          /* mon_thousands_sep */
  54         numempty,       /* mon_grouping */
  55         empty,          /* positive_sign */
  56         empty,          /* negative_sign */
  57         numempty,       /* int_frac_digits */
  58         numempty,       /* frac_digits */
  59         numempty,       /* p_cs_precedes */
  60         numempty,       /* p_sep_by_space */
  61         numempty,       /* n_cs_precedes */
  62         numempty,       /* n_sep_by_space */
  63         numempty,       /* p_sign_posn */
  64         numempty,       /* n_sign_posn */
  65         numempty,       /* int_p_cs_precedes */
  66         numempty,       /* int_n_cs_precedes */
  67         numempty,       /* int_p_sep_by_space */
  68         numempty,       /* int_n_sep_by_space */
  69         numempty,       /* int_p_sign_posn */
  70         numempty,       /* int_n_sign_posn */
  71         empty           /* crncystr */
  72 };
  73 
  74 struct locdata __posix_monetary_locdata = {
  75         .l_lname = "C",
  76         .l_refcnt = (uint32_t)-1,
  77         .l_data = { &lc_monetary_posix }
  78 };
  79 
  80 static char
  81 cnv(const char *str)
  82 {
  83         int i = strtol(str, NULL, 10);
  84 
  85         if (i == -1)
  86                 i = CHAR_MAX;
  87         return ((char)i);
  88 }
  89 
  90 struct locdata *
  91 __lc_monetary_load(const char *name)
  92 {
  93         int ret;
  94         int clen;
  95         struct lc_monetary      *lmon;
  96         struct locdata          *ldata;
  97 
  98         if ((ldata = __locdata_alloc(name, sizeof (*lmon))) == NULL) {
  99                 return (NULL);
 100         }
 101         lmon = ldata->l_data[0];
 102 
 103         ret = __part_load_locale(name, (char **)&ldata->l_data[1],
 104             "LC_MONETARY", LCMONETARY_SIZE_FULL, LCMONETARY_SIZE_MIN,
 105             (const char **)lmon);
 106 
 107         if (ret != _LDP_LOADED) {
 108                 __locdata_release(ldata);
 109                 errno = EINVAL;
 110                 return (NULL);
 111         }
 112 
 113         /* special storage for currency string */
 114         clen = strlen(lmon->currency_symbol) + 2;
 115         ldata->l_data[2] = malloc(clen);
 116         lmon->crncystr = ldata->l_data[2];
 117         lmon->crncystr[0] = '\0';
 118 
 119         lmon->mon_grouping = __fix_locale_grouping_str(lmon->mon_grouping);
 120 
 121 #define M_ASSIGN_CHAR(NAME) \
 122         (((char *)lmon->NAME)[0] = cnv(lmon->NAME))
 123 
 124         M_ASSIGN_CHAR(int_frac_digits);
 125         M_ASSIGN_CHAR(frac_digits);
 126         M_ASSIGN_CHAR(p_cs_precedes);
 127         M_ASSIGN_CHAR(p_sep_by_space);
 128         M_ASSIGN_CHAR(n_cs_precedes);
 129         M_ASSIGN_CHAR(n_sep_by_space);
 130         M_ASSIGN_CHAR(p_sign_posn);
 131         M_ASSIGN_CHAR(n_sign_posn);
 132 
 133         /*
 134          * The six additional C99 international monetary formatting
 135          * parameters default to the national parameters when
 136          * reading FreeBSD LC_MONETARY data files.
 137          */
 138 #define M_ASSIGN_ICHAR(NAME)                            \
 139         if (lmon->int_##NAME == NULL)                        \
 140                 lmon->int_##NAME = lmon->NAME;            \
 141         else                                            \
 142                 M_ASSIGN_CHAR(int_##NAME);
 143 
 144         M_ASSIGN_ICHAR(p_cs_precedes);
 145         M_ASSIGN_ICHAR(n_cs_precedes);
 146         M_ASSIGN_ICHAR(p_sep_by_space);
 147         M_ASSIGN_ICHAR(n_sep_by_space);
 148         M_ASSIGN_ICHAR(p_sign_posn);
 149         M_ASSIGN_ICHAR(n_sign_posn);
 150 
 151         /*
 152          * Now calculate the currency string (CRNCYSTR) for nl_langinfo.
 153          * This is a legacy SUSv2 interface.
 154          */
 155         if ((lmon->p_cs_precedes[0] == lmon->n_cs_precedes[0]) &&
 156             (lmon->currency_symbol[0] != '\0')) {
 157                 char sign = '\0';
 158                 switch (lmon->p_cs_precedes[0]) {
 159                 case 0:
 160                         sign = '-';
 161                         break;
 162                 case 1:
 163                         sign = '+';
 164                         break;
 165                 case CHAR_MAX:
 166                         /*
 167                          * Substitute currency string for radix character.
 168                          * To the best of my knowledge, no locale uses this.
 169                          */
 170                         if (strcmp(lmon->mon_decimal_point,
 171                             lmon->currency_symbol) == 0)
 172                                 sign = '.';
 173                         break;
 174                 }
 175                 (void) snprintf(lmon->crncystr, clen, "%c%s", sign,
 176                     lmon->currency_symbol);
 177         }
 178 
 179         return (ldata);
 180 }