1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Paul Borman at Krystal Technologies. 7 * 8 * Copyright (c) 2011 The FreeBSD Foundation 9 * All rights reserved. 10 * Portions of this software were developed by David Chisnall 11 * under sponsorship from the FreeBSD Foundation. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: head/lib/libc/locale/setrunelocale.c 264038 2014-04-02 11:10:46Z theraven $ 38 */ 39 40 41 #define __RUNETYPE_INTERNAL 1 42 43 #include <runetype.h> 44 #include <errno.h> 45 #include <limits.h> 46 #include <string.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <unistd.h> 50 #include <wchar.h> 51 #include "ldpart.h" 52 #include "mblocal.h" 53 #include "setlocale.h" 54 55 #undef _CurrentRuneLocale 56 extern _RuneLocale const *_CurrentRuneLocale; 57 #ifndef __NO_TLS 58 /* 59 * A cached version of the runes for this thread. Used by ctype.h 60 */ 61 __thread const _RuneLocale *_ThreadRuneLocale; 62 #endif 63 64 extern int __mb_sb_limit; 65 66 extern _RuneLocale *_Read_RuneMagi(const char *); 67 68 static int __setrunelocale(struct xlocale_ctype *l, const char *); 69 70 static void 71 destruct_ctype(void *v) 72 { 73 struct xlocale_ctype *l = v; 74 75 if (&_DefaultRuneLocale != l->runes) 76 free(l->runes); 77 free(l); 78 } 79 80 const _RuneLocale * 81 __getCurrentRuneLocale(void) 82 { 83 84 return XLOCALE_CTYPE(__get_locale())->runes; 85 } 86 87 static void 88 free_runes(_RuneLocale *rl) 89 { 90 if ((rl != &_DefaultRuneLocale) && (rl)) { 91 free(rl); 92 } 93 } 94 95 static int 96 __setrunelocale(struct xlocale_ctype *l, const char *encoding) 97 { 98 _RuneLocale *rl; 99 int ret; 100 char path[PATH_MAX]; 101 struct xlocale_ctype saved = *l; 102 103 /* 104 * The "C" and "POSIX" locale are always here. 105 */ 106 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 107 free_runes(saved.runes); 108 (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); 109 return (0); 110 } 111 112 /* Range checking not needed, encoding length already checked before */ 113 (void) snprintf(path, sizeof (path), "%s/%s/LC_CTYPE", 114 _PathLocale, encoding); 115 116 if ((rl = _Read_RuneMagi(path)) == NULL) { 117 errno = EINVAL; 118 return (errno); 119 } 120 121 l->__mbrtowc = NULL; 122 l->__mbsinit = NULL; 123 l->__mbsnrtowcs = NULL; 124 l->__wcrtomb = NULL; 125 l->__wcsnrtombs = NULL; 126 127 rl->__sputrune = NULL; 128 rl->__sgetrune = NULL; 129 if (strcmp(rl->__encoding, "NONE:US-ASCII") == 0) 130 ret = _ascii_init(l, rl); 131 else if (strncmp(rl->__encoding, "NONE", 4) == 0) 132 ret = _none_init(l, rl); 133 else if (strcmp(rl->__encoding, "UTF-8") == 0) 134 ret = _UTF8_init(l, rl); 135 else if (strcmp(rl->__encoding, "EUC-CN") == 0) 136 ret = _EUC_CN_init(l, rl); 137 else if (strcmp(rl->__encoding, "EUC-JP") == 0) 138 ret = _EUC_JP_init(l, rl); 139 else if (strcmp(rl->__encoding, "EUC-KR") == 0) 140 ret = _EUC_KR_init(l, rl); 141 else if (strcmp(rl->__encoding, "EUC-TW") == 0) 142 ret = _EUC_TW_init(l, rl); 143 else if (strcmp(rl->__encoding, "GB18030") == 0) 144 ret = _GB18030_init(l, rl); 145 else if (strcmp(rl->__encoding, "GB2312") == 0) 146 ret = _GB2312_init(l, rl); 147 else if (strcmp(rl->__encoding, "GBK") == 0) 148 ret = _GBK_init(l, rl); 149 else if (strcmp(rl->__encoding, "BIG5") == 0) 150 ret = _BIG5_init(l, rl); 151 else if (strcmp(rl->__encoding, "MSKanji") == 0) 152 ret = _MSKanji_init(l, rl); 153 else 154 ret = EFTYPE; 155 156 if (ret == 0) { 157 /* Free the old runes if it exists. */ 158 free_runes(saved.runes); 159 } else { 160 /* Restore the saved version if this failed. */ 161 memcpy(l, &saved, sizeof(struct xlocale_ctype)); 162 free(rl); 163 } 164 165 return (ret); 166 } 167 168 int 169 __wrap_setrunelocale(const char *locale) 170 { 171 int ret = __setrunelocale(&__xlocale_global_ctype, locale); 172 173 if (ret != 0) { 174 errno = ret; 175 return (_LDP_ERROR); 176 } 177 __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; 178 __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; 179 _CurrentRuneLocale = __xlocale_global_ctype.runes; 180 return (_LDP_LOADED); 181 } 182 183 #ifndef __NO_TLS 184 void 185 __set_thread_rune_locale(locale_t loc) 186 { 187 188 if (loc == NULL) { 189 _ThreadRuneLocale = &_DefaultRuneLocale; 190 } else if (loc == LC_GLOBAL_LOCALE) { 191 _ThreadRuneLocale = 0; 192 } else { 193 _ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes; 194 } 195 } 196 #endif 197 198 void * 199 __ctype_load(const char *locale, __unused locale_t unused) 200 { 201 struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); 202 203 l->header.header.destructor = destruct_ctype; 204 if (__setrunelocale(l, locale)) 205 { 206 free(l); 207 return NULL; 208 } 209 return l; 210 } 211