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 * 4. 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 244126 2012-12-11 22:52:56Z jilles $ 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(FILE *); 67 68 static int __setrunelocale(struct xlocale_ctype *l, const char *); 69 70 #define __collate_substitute_nontrivial (table->__collate_substitute_nontrivial) 71 #define __collate_substitute_table_ptr (table->__collate_substitute_table_ptr) 72 #define __collate_char_pri_table_ptr (table->__collate_char_pri_table_ptr) 73 #define __collate_chain_pri_table (table->__collate_chain_pri_table) 74 75 76 static void 77 destruct_ctype(void *v) 78 { 79 struct xlocale_ctype *l = v; 80 81 if (strcmp(l->runes->__encoding, "EUC") == 0) 82 free(l->runes->__variable); 83 if (&_DefaultRuneLocale != l->runes) 84 free(l->runes); 85 free(l); 86 } 87 88 const _RuneLocale * 89 __getCurrentRuneLocale(void) 90 { 91 92 return XLOCALE_CTYPE(__get_locale())->runes; 93 } 94 95 static void 96 free_runes(_RuneLocale *rl) 97 { 98 99 /* FIXME: The "EUC" check here is a hideous abstraction violation. */ 100 if ((rl != &_DefaultRuneLocale) && (rl)) { 101 if (strcmp(rl->__encoding, "EUC") == 0) { 102 free(rl->__variable); 103 } 104 free(rl); 105 } 106 } 107 108 static int 109 __setrunelocale(struct xlocale_ctype *l, const char *encoding) 110 { 111 FILE *fp; 112 char name[PATH_MAX]; 113 _RuneLocale *rl; 114 int saverr, ret; 115 struct xlocale_ctype saved = *l; 116 117 /* 118 * The "C" and "POSIX" locale are always here. 119 */ 120 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 121 free_runes(saved.runes); 122 (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); 123 return (0); 124 } 125 126 /* Range checking not needed, encoding length already checked before */ 127 (void) strcpy(name, _PathLocale); 128 (void) strcat(name, "/"); 129 (void) strcat(name, encoding); 130 (void) strcat(name, "/LC_CTYPE"); 131 132 if ((fp = fopen(name, "re")) == NULL) 133 return (errno == 0 ? ENOENT : errno); 134 135 if ((rl = _Read_RuneMagi(fp)) == NULL) { 136 saverr = (errno == 0 ? EFTYPE : errno); 137 (void)fclose(fp); 138 return (saverr); 139 } 140 (void)fclose(fp); 141 142 l->__mbrtowc = NULL; 143 l->__mbsinit = NULL; 144 l->__mbsnrtowcs = __mbsnrtowcs_std; 145 l->__wcrtomb = NULL; 146 l->__wcsnrtombs = __wcsnrtombs_std; 147 148 rl->__sputrune = NULL; 149 rl->__sgetrune = NULL; 150 if (strcmp(rl->__encoding, "NONE") == 0) 151 ret = _none_init(l, rl); 152 else if (strcmp(rl->__encoding, "ASCII") == 0) 153 ret = _ascii_init(l, rl); 154 else if (strcmp(rl->__encoding, "UTF-8") == 0) 155 ret = _UTF8_init(l, rl); 156 else if (strcmp(rl->__encoding, "EUC") == 0) 157 ret = _EUC_init(l, rl); 158 else if (strcmp(rl->__encoding, "GB18030") == 0) 159 ret = _GB18030_init(l, rl); 160 else if (strcmp(rl->__encoding, "GB2312") == 0) 161 ret = _GB2312_init(l, rl); 162 else if (strcmp(rl->__encoding, "GBK") == 0) 163 ret = _GBK_init(l, rl); 164 else if (strcmp(rl->__encoding, "BIG5") == 0) 165 ret = _BIG5_init(l, rl); 166 else if (strcmp(rl->__encoding, "MSKanji") == 0) 167 ret = _MSKanji_init(l, rl); 168 else 169 ret = EFTYPE; 170 171 if (ret == 0) { 172 /* Free the old runes if it exists. */ 173 free_runes(saved.runes); 174 } else { 175 /* Restore the saved version if this failed. */ 176 memcpy(l, &saved, sizeof(struct xlocale_ctype)); 177 free(rl); 178 } 179 180 return (ret); 181 } 182 183 int 184 __wrap_setrunelocale(const char *locale) 185 { 186 int ret = __setrunelocale(&__xlocale_global_ctype, locale); 187 188 if (ret != 0) { 189 errno = ret; 190 return (_LDP_ERROR); 191 } 192 __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; 193 __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; 194 _CurrentRuneLocale = __xlocale_global_ctype.runes; 195 return (_LDP_LOADED); 196 } 197 198 #ifndef __NO_TLS 199 void 200 __set_thread_rune_locale(locale_t loc) 201 { 202 203 if (loc == NULL) { 204 _ThreadRuneLocale = &_DefaultRuneLocale; 205 } else { 206 _ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes; 207 } 208 } 209 #endif 210 211 void * 212 __ctype_load(const char *locale, __unused locale_t unused) 213 { 214 struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); 215 216 l->header.header.destructor = destruct_ctype; 217 if (__setrunelocale(l, locale)) 218 { 219 free(l); 220 return NULL; 221 } 222 return l; 223 } 224