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 * $Id: nls.c,v 1.10 2002/07/22 08:33:59 bp Exp $
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#include <sys/types.h>
39#include <sys/sysctl.h>
40#include <ctype.h>
41#include <errno.h>
42#include <stdio.h>
43#include <string.h>
44#include <stdlib.h>
45#include <locale.h>
46#include <err.h>
47#include <netsmb/smb_lib.h>
48
49#ifdef HAVE_ICONV
50#include <iconv.h>
51#endif
52
53u_char nls_lower[256];
54u_char nls_upper[256];
55
56#ifdef HAVE_ICONV
57static iconv_t nls_toext, nls_toloc;
58#endif
59
60int
61nls_setlocale(const char *name)
62{
63	int i;
64
65	if (setlocale(LC_CTYPE, name) == NULL) {
66		warnx("can't set locale '%s'\n", name);
67		return EINVAL;
68	}
69	for (i = 0; i < 256; i++) {
70		nls_lower[i] = tolower(i);
71		nls_upper[i] = toupper(i);
72	}
73	return 0;
74}
75
76int
77nls_setrecode(const char *local, const char *external)
78{
79#ifdef HAVE_ICONV
80	iconv_t icd;
81
82	if (nls_toext)
83		iconv_close(nls_toext);
84	if (nls_toloc)
85		iconv_close(nls_toloc);
86	nls_toext = nls_toloc = (iconv_t)0;
87	icd = iconv_open(external, local);
88	if (icd == (iconv_t)-1)
89		return errno;
90	nls_toext = icd;
91	icd = iconv_open(local, external);
92	if (icd == (iconv_t)-1) {
93		iconv_close(nls_toext);
94		nls_toext = (iconv_t)0;
95		return errno;
96	}
97	nls_toloc = icd;
98	return 0;
99#else
100	return ENOENT;
101#endif
102}
103
104char *
105nls_str_toloc(char *dst, char *src)
106{
107#ifdef HAVE_ICONV
108	char *p = dst;
109	size_t inlen, outlen;
110
111	if (nls_toloc == (iconv_t)0)
112		return strcpy(dst, src);
113	inlen = outlen = strlen(src);
114	iconv(nls_toloc, NULL, NULL, &p, &outlen);
115	while (iconv(nls_toloc, &src, &inlen, &p, &outlen) == -1) {
116		*p++ = *src++;
117		inlen--;
118		outlen--;
119	}
120	*p = 0;
121	return dst;
122#else
123	return strcpy(dst, src);
124#endif
125}
126
127char *
128nls_str_toext(char *dst, char *src)
129{
130#ifdef HAVE_ICONV
131	char *p = dst;
132	size_t inlen, outlen;
133
134	if (nls_toext == (iconv_t)0)
135		return strcpy(dst, src);
136	inlen = outlen = strlen(src);
137	iconv(nls_toext, NULL, NULL, &p, &outlen);
138	while (iconv(nls_toext, &src, &inlen, &p, &outlen) == -1) {
139		*p++ = *src++;
140		inlen--;
141		outlen--;
142	}
143	*p = 0;
144	return dst;
145#else
146	return strcpy(dst, src);
147#endif
148}
149
150void *
151nls_mem_toloc(void *dst, void *src, int size)
152{
153#ifdef HAVE_ICONV
154	char *p = dst;
155	char *s = src;
156	size_t inlen, outlen;
157
158	if (size == 0)
159		return NULL;
160
161	if (nls_toloc == (iconv_t)0)
162		return memcpy(dst, src, size);
163	inlen = outlen = size;
164	iconv(nls_toloc, NULL, NULL, &p, &outlen);
165	while (iconv(nls_toloc, &s, &inlen, &p, &outlen) == -1) {
166		*p++ = *s++;
167		inlen--;
168		outlen--;
169	}
170	return dst;
171#else
172	return memcpy(dst, src, size);
173#endif
174}
175
176void *
177nls_mem_toext(void *dst, void *src, int size)
178{
179#ifdef HAVE_ICONV
180	char *p = dst;
181	char *s = src;
182	size_t inlen, outlen;
183
184	if (size == 0)
185		return NULL;
186
187	if (nls_toext == (iconv_t)0)
188		return memcpy(dst, src, size);
189
190	inlen = outlen = size;
191	iconv(nls_toext, NULL, NULL, &p, &outlen);
192	while (iconv(nls_toext, &s, &inlen, &p, &outlen) == -1) {
193		*p++ = *s++;
194		inlen--;
195		outlen--;
196	}
197	return dst;
198#else
199	return memcpy(dst, src, size);
200#endif
201}
202
203char *
204nls_str_upper(char *dst, const char *src)
205{
206	char *p = dst;
207
208	while (*src)
209		*dst++ = toupper(*src++);
210	*dst = 0;
211	return p;
212}
213
214char *
215nls_str_lower(char *dst, const char *src)
216{
217	char *p = dst;
218
219	while (*src)
220		*dst++ = tolower(*src++);
221	*dst = 0;
222	return p;
223}
224