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 #include <runetype.h> 42 #include <errno.h> 43 #include <limits.h> 44 #include <string.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <unistd.h> 48 #include <wchar.h> 49 #include "ldpart.h" 50 #include "mblocal.h" 51 #include "setlocale.h" 52 53 extern int __mb_sb_limit; 54 55 extern _RuneLocale *_Read_RuneMagi(FILE *); 56 57 static int __setrunelocale(struct xlocale_ctype *l, const char *); 58 59 #define __collate_load_error (table->__collate_load_error) 60 #define __collate_substitute_nontrivial (table->__collate_substitute_nontrivial) 61 #define __collate_substitute_table_ptr (table->__collate_substitute_table_ptr) 62 #define __collate_char_pri_table_ptr (table->__collate_char_pri_table_ptr) 63 #define __collate_chain_pri_table (table->__collate_chain_pri_table) 64 65 66 static void destruct_ctype(void *v) 67 { 68 struct xlocale_ctype *l = v; 69 if (strcmp(l->runes->__encoding, "EUC") == 0) 70 free(l->runes->__variable); 71 if (&_DefaultRuneLocale != l->runes) 72 free(l->runes); 73 free(l); 74 } 75 _RuneLocale *__getCurrentRuneLocale(void) 76 { 77 return XLOCALE_CTYPE(__get_locale())->runes; 78 } 79 80 static int 81 __setrunelocale(struct xlocale_ctype *l, const char *encoding) 82 { 83 FILE *fp; 84 char name[PATH_MAX]; 85 _RuneLocale *rl; 86 int saverr, ret; 87 struct xlocale_ctype saved = *l; 88 89 /* 90 * The "C" and "POSIX" locale are always here. 91 */ 92 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 93 (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); 94 return (0); 95 } 96 97 /* Range checking not needed, encoding length already checked before */ 98 (void) strcpy(name, _PathLocale); 99 (void) strcat(name, "/"); 100 (void) strcat(name, encoding); 101 (void) strcat(name, "/LC_CTYPE"); 102 103 if ((fp = fopen(name, "r")) == NULL) 104 return (errno == 0 ? ENOENT : errno); 105 106 if ((rl = _Read_RuneMagi(fp)) == NULL) { 107 saverr = (errno == 0 ? EFTYPE : errno); 108 (void)fclose(fp); 109 return (saverr); 110 } 111 (void)fclose(fp); 112 113 l->__mbrtowc = NULL; 114 l->__mbsinit = NULL; 115 l->__mbsnrtowcs = __mbsnrtowcs_std; 116 l->__wcrtomb = NULL; 117 l->__wcsnrtombs = __wcsnrtombs_std; 118 119 rl->__sputrune = NULL; 120 rl->__sgetrune = NULL; 121 if (strcmp(rl->__encoding, "NONE") == 0) 122 ret = _none_init(l, rl); 123 else if (strcmp(rl->__encoding, "ASCII") == 0) 124 ret = _ascii_init(l, rl); 125 else if (strcmp(rl->__encoding, "UTF-8") == 0) 126 ret = _UTF8_init(l, rl); 127 else if (strcmp(rl->__encoding, "EUC") == 0) 128 ret = _EUC_init(l, rl); 129 else if (strcmp(rl->__encoding, "GB18030") == 0) 130 ret = _GB18030_init(l, rl); 131 else if (strcmp(rl->__encoding, "GB2312") == 0) 132 ret = _GB2312_init(l, rl); 133 else if (strcmp(rl->__encoding, "GBK") == 0) 134 ret = _GBK_init(l, rl); 135 else if (strcmp(rl->__encoding, "BIG5") == 0) 136 ret = _BIG5_init(l, rl); 137 else if (strcmp(rl->__encoding, "MSKanji") == 0) 138 ret = _MSKanji_init(l, rl); 139 else 140 ret = EFTYPE; 141 142 if (ret == 0) { 143 /* Free the old runes if it exists. */ 144 /* FIXME: The "EUC" check here is a hideous abstraction violation. */ 145 if ((saved.runes != &_DefaultRuneLocale) && (saved.runes)) { 146 if (strcmp(saved.runes->__encoding, "EUC") == 0) { 147 free(saved.runes->__variable); 148 } 149 free(saved.runes); 150 } 151 } else { 152 /* Restore the saved version if this failed. */ 153 memcpy(l, &saved, sizeof(struct xlocale_ctype)); 154 free(rl); 155 } 156 157 return (ret); 158 } 159 160 int 161 __wrap_setrunelocale(const char *locale) 162 { 163 int ret = __setrunelocale(&__xlocale_global_ctype, locale); 164 165 if (ret != 0) { 166 errno = ret; 167 return (_LDP_ERROR); 168 } 169 __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; 170 __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; 171 return (_LDP_LOADED); 172 } 173 void *__ctype_load(const char *locale, locale_t unused) 174 { 175 struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); 176 l->header.header.destructor = destruct_ctype; 177 if (__setrunelocale(l, locale)) 178 { 179 free(l); 180 return NULL; 181 } 182 return l; 183 } 184