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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <runetype.h> 41 #include <errno.h> 42 #include <limits.h> 43 #include <string.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include <wchar.h> 48 #include "ldpart.h" 49 #include "mblocal.h" 50 #include "setlocale.h" 51 52 extern _RuneLocale *_Read_RuneMagi(FILE *); 53 54 static int __setrunelocale(const char *); 55 56 static int 57 __setrunelocale(const char *encoding) 58 { 59 FILE *fp; 60 char name[PATH_MAX]; 61 _RuneLocale *rl; 62 int saverr, ret; 63 static char ctype_encoding[ENCODING_LEN + 1]; 64 static _RuneLocale *CachedRuneLocale; 65 static int Cached__mb_cur_max; 66 static size_t (*Cached__mbrtowc)(wchar_t * __restrict, 67 const char * __restrict, size_t, mbstate_t * __restrict); 68 static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t, 69 mbstate_t * __restrict); 70 static int (*Cached__mbsinit)(const mbstate_t *); 71 static size_t (*Cached__mbsnrtowcs)(wchar_t * __restrict, 72 const char ** __restrict, size_t, size_t, mbstate_t * __restrict); 73 static size_t (*Cached__wcsnrtombs)(char * __restrict, 74 const wchar_t ** __restrict, size_t, size_t, 75 mbstate_t * __restrict); 76 77 /* 78 * The "C" and "POSIX" locale are always here. 79 */ 80 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 81 _none_init(&_DefaultRuneLocale); 82 return (0); 83 } 84 85 /* 86 * If the locale name is the same as our cache, use the cache. 87 */ 88 if (CachedRuneLocale != NULL && 89 strcmp(encoding, ctype_encoding) == 0) { 90 _CurrentRuneLocale = CachedRuneLocale; 91 __mb_cur_max = Cached__mb_cur_max; 92 __mbrtowc = Cached__mbrtowc; 93 __mbsinit = Cached__mbsinit; 94 __mbsnrtowcs = Cached__mbsnrtowcs; 95 __wcrtomb = Cached__wcrtomb; 96 __wcsnrtombs = Cached__wcsnrtombs; 97 return (0); 98 } 99 100 /* 101 * Slurp the locale file into the cache. 102 */ 103 104 /* Range checking not needed, encoding length already checked before */ 105 (void) strcpy(name, _PathLocale); 106 (void) strcat(name, "/"); 107 (void) strcat(name, encoding); 108 (void) strcat(name, "/LC_CTYPE"); 109 110 if ((fp = fopen(name, "r")) == NULL) 111 return (errno == 0 ? ENOENT : errno); 112 113 if ((rl = _Read_RuneMagi(fp)) == NULL) { 114 saverr = (errno == 0 ? EFTYPE : errno); 115 (void)fclose(fp); 116 return (saverr); 117 } 118 (void)fclose(fp); 119 120 __mbrtowc = NULL; 121 __mbsinit = NULL; 122 __mbsnrtowcs = __mbsnrtowcs_std; 123 __wcrtomb = NULL; 124 __wcsnrtombs = __wcsnrtombs_std; 125 rl->__sputrune = NULL; 126 rl->__sgetrune = NULL; 127 if (strcmp(rl->__encoding, "NONE") == 0) 128 ret = _none_init(rl); 129 else if (strcmp(rl->__encoding, "UTF-8") == 0) 130 ret = _UTF8_init(rl); 131 else if (strcmp(rl->__encoding, "EUC") == 0) 132 ret = _EUC_init(rl); 133 else if (strcmp(rl->__encoding, "GB18030") == 0) 134 ret = _GB18030_init(rl); 135 else if (strcmp(rl->__encoding, "GB2312") == 0) 136 ret = _GB2312_init(rl); 137 else if (strcmp(rl->__encoding, "GBK") == 0) 138 ret = _GBK_init(rl); 139 else if (strcmp(rl->__encoding, "BIG5") == 0) 140 ret = _BIG5_init(rl); 141 else if (strcmp(rl->__encoding, "MSKanji") == 0) 142 ret = _MSKanji_init(rl); 143 else 144 ret = EFTYPE; 145 if (ret == 0) { 146 if (CachedRuneLocale != NULL) { 147 /* See euc.c */ 148 if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) 149 free(CachedRuneLocale->__variable); 150 free(CachedRuneLocale); 151 } 152 CachedRuneLocale = _CurrentRuneLocale; 153 Cached__mb_cur_max = __mb_cur_max; 154 Cached__mbrtowc = __mbrtowc; 155 Cached__mbsinit = __mbsinit; 156 Cached__mbsnrtowcs = __mbsnrtowcs; 157 Cached__wcrtomb = __wcrtomb; 158 Cached__wcsnrtombs = __wcsnrtombs; 159 (void)strcpy(ctype_encoding, encoding); 160 } else 161 free(rl); 162 163 return (ret); 164 } 165 166 int 167 __wrap_setrunelocale(const char *locale) 168 { 169 int ret = __setrunelocale(locale); 170 171 if (ret != 0) { 172 errno = ret; 173 return (_LDP_ERROR); 174 } 175 return (_LDP_LOADED); 176 } 177 178