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 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 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_local 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_load_error (table->__collate_load_error) 71 #define __collate_substitute_nontrivial (table->__collate_substitute_nontrivial) 72 #define __collate_substitute_table_ptr (table->__collate_substitute_table_ptr) 73 #define __collate_char_pri_table_ptr (table->__collate_char_pri_table_ptr) 74 #define __collate_chain_pri_table (table->__collate_chain_pri_table) 75 76 77 static void destruct_ctype(void *v) 78 { 79 struct xlocale_ctype *l = v; 80 if (strcmp(l->runes->__encoding, "EUC") == 0) 81 free(l->runes->__variable); 82 if (&_DefaultRuneLocale != l->runes) 83 free(l->runes); 84 free(l); 85 } 86 87 const _RuneLocale *__getCurrentRuneLocale(void) 88 { 89 return XLOCALE_CTYPE(__get_locale())->runes; 90 } 91 92 static int 93 __setrunelocale(struct xlocale_ctype *l, const char *encoding) 94 { 95 FILE *fp; 96 char name[PATH_MAX]; 97 _RuneLocale *rl; 98 int saverr, ret; 99 struct xlocale_ctype saved = *l; 100 101 /* 102 * The "C" and "POSIX" locale are always here. 103 */ 104 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 105 (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); 106 return (0); 107 } 108 109 /* Range checking not needed, encoding length already checked before */ 110 (void) strcpy(name, _PathLocale); 111 (void) strcat(name, "/"); 112 (void) strcat(name, encoding); 113 (void) strcat(name, "/LC_CTYPE"); 114 115 if ((fp = fopen(name, "r")) == NULL) 116 return (errno == 0 ? ENOENT : errno); 117 118 if ((rl = _Read_RuneMagi(fp)) == NULL) { 119 saverr = (errno == 0 ? EFTYPE : errno); 120 (void)fclose(fp); 121 return (saverr); 122 } 123 (void)fclose(fp); 124 125 l->__mbrtowc = NULL; 126 l->__mbsinit = NULL; 127 l->__mbsnrtowcs = __mbsnrtowcs_std; 128 l->__wcrtomb = NULL; 129 l->__wcsnrtombs = __wcsnrtombs_std; 130 131 rl->__sputrune = NULL; 132 rl->__sgetrune = NULL; 133 if (strcmp(rl->__encoding, "NONE") == 0) 134 ret = _none_init(l, rl); 135 else if (strcmp(rl->__encoding, "ASCII") == 0) 136 ret = _ascii_init(l, rl); 137 else if (strcmp(rl->__encoding, "UTF-8") == 0) 138 ret = _UTF8_init(l, rl); 139 else if (strcmp(rl->__encoding, "EUC") == 0) 140 ret = _EUC_init(l, rl); 141 else if (strcmp(rl->__encoding, "GB18030") == 0) 142 ret = _GB18030_init(l, rl); 143 else if (strcmp(rl->__encoding, "GB2312") == 0) 144 ret = _GB2312_init(l, rl); 145 else if (strcmp(rl->__encoding, "GBK") == 0) 146 ret = _GBK_init(l, rl); 147 else if (strcmp(rl->__encoding, "BIG5") == 0) 148 ret = _BIG5_init(l, rl); 149 else if (strcmp(rl->__encoding, "MSKanji") == 0) 150 ret = _MSKanji_init(l, rl); 151 else 152 ret = EFTYPE; 153 154 if (ret == 0) { 155 /* Free the old runes if it exists. */ 156 /* FIXME: The "EUC" check here is a hideous abstraction violation. */ 157 if ((saved.runes != &_DefaultRuneLocale) && (saved.runes)) { 158 if (strcmp(saved.runes->__encoding, "EUC") == 0) { 159 free(saved.runes->__variable); 160 } 161 free(saved.runes); 162 } 163 } else { 164 /* Restore the saved version if this failed. */ 165 memcpy(l, &saved, sizeof(struct xlocale_ctype)); 166 free(rl); 167 } 168 169 return (ret); 170 } 171 172 int 173 __wrap_setrunelocale(const char *locale) 174 { 175 int ret = __setrunelocale(&__xlocale_global_ctype, locale); 176 177 if (ret != 0) { 178 errno = ret; 179 return (_LDP_ERROR); 180 } 181 __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; 182 __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; 183 _CurrentRuneLocale = __xlocale_global_ctype.runes; 184 return (_LDP_LOADED); 185 } 186 187 #ifndef __NO_TLS 188 void 189 __set_thread_rune_locale(locale_t loc) { 190 191 if (loc == NULL) { 192 _ThreadRuneLocale = &_DefaultRuneLocale; 193 } else { 194 _ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes; 195 } 196 } 197 #endif 198 199 void * 200 __ctype_load(const char *locale, locale_t unused) 201 { 202 struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); 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