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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <runetype.h> 37 #include <errno.h> 38 #include <limits.h> 39 #include <string.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <unistd.h> 43 #include <wchar.h> 44 #include "ldpart.h" 45 #include "mblocal.h" 46 #include "setlocale.h" 47 48 extern _RuneLocale *_Read_RuneMagi(FILE *); 49 50 static int __setrunelocale(const char *); 51 52 static int 53 __setrunelocale(const char *encoding) 54 { 55 FILE *fp; 56 char name[PATH_MAX]; 57 _RuneLocale *rl; 58 int saverr, ret; 59 static char ctype_encoding[ENCODING_LEN + 1]; 60 static _RuneLocale *CachedRuneLocale; 61 static int Cached__mb_cur_max; 62 static size_t (*Cached__mbrtowc)(wchar_t * __restrict, 63 const char * __restrict, size_t, mbstate_t * __restrict); 64 static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t, 65 mbstate_t * __restrict); 66 static int (*Cached__mbsinit)(const mbstate_t *); 67 static size_t (*Cached__mbsnrtowcs)(wchar_t * __restrict, 68 const char ** __restrict, size_t, size_t, mbstate_t * __restrict); 69 static size_t (*Cached__wcsnrtombs)(char * __restrict, 70 const wchar_t ** __restrict, size_t, size_t, 71 mbstate_t * __restrict); 72 73 /* 74 * The "C" and "POSIX" locale are always here. 75 */ 76 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 77 _none_init(&_DefaultRuneLocale); 78 return (0); 79 } 80 81 /* 82 * If the locale name is the same as our cache, use the cache. 83 */ 84 if (CachedRuneLocale != NULL && 85 strcmp(encoding, ctype_encoding) == 0) { 86 _CurrentRuneLocale = CachedRuneLocale; 87 __mb_cur_max = Cached__mb_cur_max; 88 __mbrtowc = Cached__mbrtowc; 89 __mbsinit = Cached__mbsinit; 90 __mbsnrtowcs = Cached__mbsnrtowcs; 91 __wcrtomb = Cached__wcrtomb; 92 __wcsnrtombs = Cached__wcsnrtombs; 93 return (0); 94 } 95 96 /* 97 * Slurp the locale file into the cache. 98 */ 99 100 /* Range checking not needed, encoding length already checked before */ 101 (void) strcpy(name, _PathLocale); 102 (void) strcat(name, "/"); 103 (void) strcat(name, encoding); 104 (void) strcat(name, "/LC_CTYPE"); 105 106 if ((fp = fopen(name, "r")) == NULL) 107 return (errno == 0 ? ENOENT : errno); 108 109 if ((rl = _Read_RuneMagi(fp)) == NULL) { 110 saverr = (errno == 0 ? EFTYPE : errno); 111 (void)fclose(fp); 112 return (saverr); 113 } 114 (void)fclose(fp); 115 116 __mbrtowc = NULL; 117 __mbsinit = NULL; 118 __mbsnrtowcs = __mbsnrtowcs_std; 119 __wcrtomb = NULL; 120 __wcsnrtombs = __wcsnrtombs_std; 121 rl->__sputrune = NULL; 122 rl->__sgetrune = NULL; 123 if (strcmp(rl->__encoding, "NONE") == 0) 124 ret = _none_init(rl); 125 else if (strcmp(rl->__encoding, "UTF-8") == 0) 126 ret = _UTF8_init(rl); 127 else if (strcmp(rl->__encoding, "EUC") == 0) 128 ret = _EUC_init(rl); 129 else if (strcmp(rl->__encoding, "GB18030") == 0) 130 ret = _GB18030_init(rl); 131 else if (strcmp(rl->__encoding, "GB2312") == 0) 132 ret = _GB2312_init(rl); 133 else if (strcmp(rl->__encoding, "GBK") == 0) 134 ret = _GBK_init(rl); 135 else if (strcmp(rl->__encoding, "BIG5") == 0) 136 ret = _BIG5_init(rl); 137 else if (strcmp(rl->__encoding, "MSKanji") == 0) 138 ret = _MSKanji_init(rl); 139 else 140 ret = EFTYPE; 141 if (ret == 0) { 142 if (CachedRuneLocale != NULL) { 143 /* See euc.c */ 144 if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) 145 free(CachedRuneLocale->__variable); 146 free(CachedRuneLocale); 147 } 148 CachedRuneLocale = _CurrentRuneLocale; 149 Cached__mb_cur_max = __mb_cur_max; 150 Cached__mbrtowc = __mbrtowc; 151 Cached__mbsinit = __mbsinit; 152 Cached__mbsnrtowcs = __mbsnrtowcs; 153 Cached__wcrtomb = __wcrtomb; 154 Cached__wcsnrtombs = __wcsnrtombs; 155 (void)strcpy(ctype_encoding, encoding); 156 } else 157 free(rl); 158 159 return (ret); 160 } 161 162 int 163 __wrap_setrunelocale(const char *locale) 164 { 165 int ret = __setrunelocale(locale); 166 167 if (ret != 0) { 168 errno = ret; 169 return (_LDP_ERROR); 170 } 171 return (_LDP_LOADED); 172 } 173 174