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 1.8 2004/10/29 19:18:32 dsl 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
54u_char nls_lower[256];
55u_char nls_upper[256];
56
57static iconv_t nls_toext, nls_toloc;
58
59int
60nls_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
75int
76nls_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
103char *
104nls_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
122char *
123nls_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
141void *
142nls_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
163void *
164nls_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
186char *
187nls_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
197char *
198nls_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}
207