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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Paul Borman at Krystal Technologies.
*
* Copyright (c) 2011 The FreeBSD Foundation
*
* Portions of this software were developed by David Chisnall
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define __RUNETYPE_INTERNAL 1
#include <runetype.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <wchar.h>
#include "ldpart.h"
#include "mblocal.h"
#include "setlocale.h"
#undef _CurrentRuneLocale
extern _RuneLocale const *_CurrentRuneLocale;
/*
* A cached version of the runes for this thread. Used by ctype.h
*/
_Thread_local const _RuneLocale *_ThreadRuneLocale;
extern int __mb_sb_limit;
extern _RuneLocale *_Read_RuneMagi(const char *);
static int __setrunelocale(struct xlocale_ctype *l, const char *);
static void
destruct_ctype(void *v)
{
struct xlocale_ctype *l = v;
if (&_DefaultRuneLocale != l->runes)
free(l->runes);
free(l);
}
const _RuneLocale *
__getCurrentRuneLocale(void)
{
return (XLOCALE_CTYPE(__get_locale())->runes);
}
static void
free_runes(_RuneLocale *rl)
{
if ((rl != &_DefaultRuneLocale) && (rl)) {
free(rl);
}
}
static int
__setrunelocale(struct xlocale_ctype *l, const char *encoding)
{
_RuneLocale *rl;
int ret;
char *path;
struct xlocale_ctype saved = *l;
/*
* The "C" and "POSIX" locale are always here.
*/
if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) {
free_runes(saved.runes);
(void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale);
return (0);
}
/* Range checking not needed, encoding length already checked before */
if (asprintf(&path, "%s/%s/LC_CTYPE", _PathLocale, encoding) == -1)
return (errno);
if ((rl = _Read_RuneMagi(path)) == NULL) {
free(path);
errno = EINVAL;
return (errno);
}
free(path);
l->__mbrtowc = NULL;
l->__mbsinit = NULL;
l->__mbsnrtowcs = NULL;
l->__wcrtomb = NULL;
l->__wcsnrtombs = NULL;
rl->__sputrune = NULL;
rl->__sgetrune = NULL;
if (strcmp(rl->__encoding, "NONE:US-ASCII") == 0)
ret = _ascii_init(l, rl);
else if (strncmp(rl->__encoding, "NONE", 4) == 0)
ret = _none_init(l, rl);
else if (strcmp(rl->__encoding, "UTF-8") == 0)
ret = _UTF8_init(l, rl);
else if (strcmp(rl->__encoding, "EUC-CN") == 0)
ret = _EUC_CN_init(l, rl);
else if (strcmp(rl->__encoding, "EUC-JP") == 0)
ret = _EUC_JP_init(l, rl);
else if (strcmp(rl->__encoding, "EUC-KR") == 0)
ret = _EUC_KR_init(l, rl);
else if (strcmp(rl->__encoding, "EUC-TW") == 0)
ret = _EUC_TW_init(l, rl);
else if (strcmp(rl->__encoding, "GB18030") == 0)
ret = _GB18030_init(l, rl);
else if (strcmp(rl->__encoding, "GB2312") == 0)
ret = _GB2312_init(l, rl);
else if (strcmp(rl->__encoding, "GBK") == 0)
ret = _GBK_init(l, rl);
else if (strcmp(rl->__encoding, "BIG5") == 0)
ret = _BIG5_init(l, rl);
else if (strcmp(rl->__encoding, "MSKanji") == 0)
ret = _MSKanji_init(l, rl);
else
ret = EFTYPE;
if (ret == 0) {
/* Free the old runes if it exists. */
free_runes(saved.runes);
/* Reset the mbstates */
memset(&l->c16rtomb, 0, sizeof(l->c16rtomb));
memset(&l->c32rtomb, 0, sizeof(l->c32rtomb));
memset(&l->mblen, 0, sizeof(l->mblen));
memset(&l->mbrlen, 0, sizeof(l->mbrlen));
memset(&l->mbrtoc16, 0, sizeof(l->mbrtoc16));
memset(&l->mbrtoc32, 0, sizeof(l->mbrtoc32));
memset(&l->mbrtowc, 0, sizeof(l->mbrtowc));
memset(&l->mbsnrtowcs, 0, sizeof(l->mbsnrtowcs));
memset(&l->mbsrtowcs, 0, sizeof(l->mbsrtowcs));
memset(&l->mbtowc, 0, sizeof(l->mbtowc));
memset(&l->wcrtomb, 0, sizeof(l->wcrtomb));
memset(&l->wcsnrtombs, 0, sizeof(l->wcsnrtombs));
memset(&l->wcsrtombs, 0, sizeof(l->wcsrtombs));
memset(&l->wctomb, 0, sizeof(l->wctomb));
} else {
/* Restore the saved version if this failed. */
memcpy(l, &saved, sizeof(struct xlocale_ctype));
free(rl);
}
return (ret);
}
int
__wrap_setrunelocale(const char *locale)
{
int ret = __setrunelocale(&__xlocale_global_ctype, locale);
if (ret != 0) {
errno = ret;
return (_LDP_ERROR);
}
__mb_cur_max = __xlocale_global_ctype.__mb_cur_max;
__mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit;
_CurrentRuneLocale = __xlocale_global_ctype.runes;
return (_LDP_LOADED);
}
void
__set_thread_rune_locale(locale_t loc)
{
if (loc == NULL) {
_ThreadRuneLocale = &_DefaultRuneLocale;
} else if (loc == LC_GLOBAL_LOCALE) {
_ThreadRuneLocale = 0;
} else {
_ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes;
}
}
void *
__ctype_load(const char *locale, locale_t unused __unused)
{
struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1);
if (l == NULL)
return (NULL);
l->header.header.destructor = destruct_ctype;
if (__setrunelocale(l, locale)) {
free(l);
return (NULL);
}
return (l);
}
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