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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 /* setrunelocale() is obsolete in FreeBSD 6 -- use ANSI functions instead. */ 38 #define OBSOLETE_IN_6 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <rune.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 extern int _none_init(_RuneLocale *); 56 extern int _UTF2_init(_RuneLocale *); 57 extern int _UTF8_init(_RuneLocale *); 58 extern int _EUC_init(_RuneLocale *); 59 extern int _GB18030_init(_RuneLocale *); 60 extern int _GB2312_init(_RuneLocale *); 61 extern int _GBK_init(_RuneLocale *); 62 extern int _BIG5_init(_RuneLocale *); 63 extern int _MSKanji_init(_RuneLocale *); 64 extern _RuneLocale *_Read_RuneMagi(FILE *); 65 66 static int __setrunelocale(const char *); 67 68 __warn_references(setrunelocale, "warning: setrunelocale() is deprecated. See setrunelocale(3)."); 69 int 70 setrunelocale(char *encoding) 71 { 72 int ret; 73 74 if (!encoding || !*encoding || strlen(encoding) > ENCODING_LEN || 75 (encoding[0] == '.' && 76 (encoding[1] == '\0' || 77 (encoding[1] == '.' && encoding[2] == '\0'))) || 78 strchr(encoding, '/') != NULL) 79 return (EINVAL); 80 81 ret = __detect_path_locale(); 82 if (ret != 0) 83 return (ret); 84 85 return (__setrunelocale((const char *)encoding)); 86 } 87 88 static int 89 __setrunelocale(const char *encoding) 90 { 91 FILE *fp; 92 char name[PATH_MAX]; 93 _RuneLocale *rl; 94 int saverr, ret; 95 static char ctype_encoding[ENCODING_LEN + 1]; 96 static _RuneLocale *CachedRuneLocale; 97 static int Cached__mb_cur_max; 98 static size_t (*Cached__mbrtowc)(wchar_t * __restrict, 99 const char * __restrict, size_t, mbstate_t * __restrict); 100 static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t, 101 mbstate_t * __restrict); 102 static int (*Cached__mbsinit)(const mbstate_t *); 103 static size_t (*Cached__mbsrtowcs)(wchar_t * __restrict, 104 const char ** __restrict, size_t, mbstate_t * __restrict); 105 static size_t (*Cached__wcsrtombs)(char * __restrict, 106 const wchar_t ** __restrict, size_t, mbstate_t * __restrict); 107 108 /* 109 * The "C" and "POSIX" locale are always here. 110 */ 111 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 112 _CurrentRuneLocale = &_DefaultRuneLocale; 113 __mb_cur_max = 1; 114 __mbrtowc = _none_mbrtowc; 115 __mbsinit = _none_mbsinit; 116 __mbsrtowcs = _none_mbsrtowcs; 117 __wcrtomb = _none_wcrtomb; 118 __wcsrtombs = _none_wcsrtombs; 119 return (0); 120 } 121 122 /* 123 * If the locale name is the same as our cache, use the cache. 124 */ 125 if (CachedRuneLocale != NULL && 126 strcmp(encoding, ctype_encoding) == 0) { 127 _CurrentRuneLocale = CachedRuneLocale; 128 __mb_cur_max = Cached__mb_cur_max; 129 __mbrtowc = Cached__mbrtowc; 130 __mbsinit = Cached__mbsinit; 131 __mbsrtowcs = Cached__mbsrtowcs; 132 __wcrtomb = Cached__wcrtomb; 133 __wcsrtombs = Cached__wcsrtombs; 134 return (0); 135 } 136 137 /* 138 * Slurp the locale file into the cache. 139 */ 140 141 /* Range checking not needed, encoding length already checked before */ 142 (void) strcpy(name, _PathLocale); 143 (void) strcat(name, "/"); 144 (void) strcat(name, encoding); 145 (void) strcat(name, "/LC_CTYPE"); 146 147 if ((fp = fopen(name, "r")) == NULL) 148 return (errno == 0 ? ENOENT : errno); 149 150 if ((rl = _Read_RuneMagi(fp)) == NULL) { 151 saverr = (errno == 0 ? EFTYPE : errno); 152 (void)fclose(fp); 153 return (saverr); 154 } 155 (void)fclose(fp); 156 157 __mbrtowc = NULL; 158 __mbsinit = NULL; 159 __mbsrtowcs = __mbsrtowcs_std; 160 __wcrtomb = NULL; 161 __wcsrtombs = __wcsrtombs_std; 162 rl->__sputrune = __emulated_sputrune; 163 rl->__sgetrune = __emulated_sgetrune; 164 if (strcmp(rl->__encoding, "NONE") == 0) 165 ret = _none_init(rl); 166 else if (strcmp(rl->__encoding, "UTF2") == 0) 167 ret = _UTF2_init(rl); 168 else if (strcmp(rl->__encoding, "UTF-8") == 0) 169 ret = _UTF8_init(rl); 170 else if (strcmp(rl->__encoding, "EUC") == 0) 171 ret = _EUC_init(rl); 172 else if (strcmp(rl->__encoding, "GB18030") == 0) 173 ret = _GB18030_init(rl); 174 else if (strcmp(rl->__encoding, "GB2312") == 0) 175 ret = _GB2312_init(rl); 176 else if (strcmp(rl->__encoding, "GBK") == 0) 177 ret = _GBK_init(rl); 178 else if (strcmp(rl->__encoding, "BIG5") == 0) 179 ret = _BIG5_init(rl); 180 else if (strcmp(rl->__encoding, "MSKanji") == 0) 181 ret = _MSKanji_init(rl); 182 else 183 ret = EFTYPE; 184 if (ret == 0) { 185 if (CachedRuneLocale != NULL) { 186 /* See euc.c */ 187 if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) 188 free(CachedRuneLocale->__variable); 189 free(CachedRuneLocale); 190 } 191 CachedRuneLocale = _CurrentRuneLocale; 192 Cached__mb_cur_max = __mb_cur_max; 193 Cached__mbrtowc = __mbrtowc; 194 Cached__mbsinit = __mbsinit; 195 Cached__mbsrtowcs = __mbsrtowcs; 196 Cached__wcrtomb = __wcrtomb; 197 Cached__wcsrtombs = __wcsrtombs; 198 (void)strcpy(ctype_encoding, encoding); 199 } else 200 free(rl); 201 202 return (ret); 203 } 204 205 int 206 __wrap_setrunelocale(const char *locale) 207 { 208 int ret = __setrunelocale(locale); 209 210 if (ret != 0) { 211 errno = ret; 212 return (_LDP_ERROR); 213 } 214 return (_LDP_LOADED); 215 } 216 217