dist/smbfs/lib/smb/nls.c

   1 /*
   2  * Copyright (c) 2000-2001, Boris Popov
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *    This product includes software developed by Boris Popov.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * from: Id: nls.c,v 1.10 2002/07/22 08:33:59 bp Exp
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __RCSID("$NetBSD: nls.c,v 1.7 2004/08/02 13:38:21 tshiozak Exp $");
  37
  38 #include <sys/param.h>
  39 #include <sys/types.h>
  40 #include <sys/sysctl.h>
  41 #include <ctype.h>
  42 #ifndef APPLE
  43 #include <dlfcn.h>
  44 #endif
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <strings.h>
  48 #include <stdlib.h>
  49 #include <locale.h>
  50 #include <err.h>
  51 #include <netsmb/smb_lib.h>
  52 #include <iconv.h>
  53
  54 u_char nls_lower[256];
  55 u_char nls_upper[256];
  56
  57 static iconv_t nls_toext, nls_toloc;
  58
  59 int
  60 nls_setlocale(const char *name)
  61 {
  62         int i;
  63
  64         if (setlocale(LC_CTYPE, name) == NULL) {
  65                 warnx("can't set locale '%s'", name);
  66                 return EINVAL;
  67         }
  68         for (i = 0; i < 256; i++) {
  69                 nls_lower[i] = tolower(i);
  70                 nls_upper[i] = toupper(i);
  71         }
  72         return 0;
  73 }
  74
  75 int
  76 nls_setrecode(const char *local, const char *external)
  77 {
  78 #ifdef APPLE
  79         return ENOENT;
  80 #else
  81         iconv_t icd;
  82
  83         if (nls_toext)
  84                 iconv_close(nls_toext);
  85         if (nls_toloc)
  86                 iconv_close(nls_toloc);
  87         nls_toext = nls_toloc = (iconv_t)0;
  88         icd = iconv_open(external, local);
  89         if (icd == (iconv_t)-1)
  90                 return errno;
  91         nls_toext = icd;
  92         icd = iconv_open(local, external);
  93         if (icd == (iconv_t)-1) {
  94                 iconv_close(nls_toext);
  95                 nls_toext = (iconv_t)0;
  96                 return errno;
  97         }
  98         nls_toloc = icd;
  99         return 0;
 100 #endif
 101 }
 102
 103 char *
 104 nls_str_toloc(char *dst, const char *src)
 105 {
 106         char *p = dst;
 107         size_t inlen, outlen;
 108
 109         if (nls_toloc == (iconv_t)0)
 110                 return strcpy(dst, src);
 111         inlen = outlen = strlen(src);
 112         iconv(nls_toloc, NULL, NULL, &p, &outlen);
 113         while (iconv(nls_toloc, &src, &inlen, &p, &outlen) == -1) {
 114                 *p++ = *src++;
 115                 inlen--;
 116                 outlen--;
 117         }
 118         *p = 0;
 119         return dst;
 120 }
 121
 122 char *
 123 nls_str_toext(char *dst, const char *src)
 124 {
 125         char *p = dst;
 126         size_t inlen, outlen;
 127
 128         if (nls_toext == (iconv_t)0)
 129                 return strcpy(dst, src);
 130         inlen = outlen = strlen(src);
 131         iconv(nls_toext, NULL, NULL, &p, &outlen);
 132         while (iconv(nls_toext, &src, &inlen, &p, &outlen) == -1) {
 133                 *p++ = *src++;
 134                 inlen--;
 135                 outlen--;
 136         }
 137         *p = 0;
 138         return dst;
 139 }
 140
 141 void *
 142 nls_mem_toloc(void *dst, const void *src, size_t size)
 143 {
 144         char *p = dst;
 145         const char *s = src;
 146         size_t inlen, outlen;
 147
 148         if (size == 0)
 149                 return NULL;
 150
 151         if (nls_toloc == (iconv_t)0)
 152                 return memcpy(dst, src, size);
 153         inlen = outlen = size;
 154         iconv(nls_toloc, NULL, NULL, &p, &outlen);
 155         while (iconv(nls_toloc, &s, &inlen, &p, &outlen) == -1) {
 156                 *p++ = *s++;
 157                 inlen--;
 158                 outlen--;
 159         }
 160         return dst;
 161 }
 162
 163 void *
 164 nls_mem_toext(void *dst, const void *src, size_t size)
 165 {
 166         char *p = dst;
 167         const char *s = src;
 168         size_t inlen, outlen;
 169
 170         if (size == 0)
 171                 return NULL;
 172
 173         if (nls_toext == (iconv_t)0)
 174                 return memcpy(dst, src, size);
 175
 176         inlen = outlen = size;
 177         iconv(nls_toext, NULL, NULL, &p, &outlen);
 178         while (iconv(nls_toext, &s, &inlen, &p, &outlen) == -1) {
 179                 *p++ = *s++;
 180                 inlen--;
 181                 outlen--;
 182         }
 183         return dst;
 184 }
 185
 186 char *
 187 nls_str_upper(char *dst, const char *src)
 188 {
 189         char *p = dst;
 190
 191         while (*src)
 192                 *dst++ = toupper((unsigned char)*src++);
 193         *dst = 0;
 194         return p;
 195 }
 196
 197 char *
 198 nls_str_lower(char *dst, const char *src)
 199 {
 200         char *p = dst;
 201
 202         while (*src)
 203                 *dst++ = tolower((unsigned char)*src++);
 204         *dst = 0;
 205         return p;
 206 }