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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 /* setrunelocale() is obsolete in FreeBSD 6 -- use ANSI functions instead.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__mbsnrtowcs)(wchar_t * __restrict, 104 const char ** __restrict, size_t, size_t, mbstate_t * __restrict); 105 static size_t (*Cached__wcsnrtombs)(char * __restrict, 106 const wchar_t ** __restrict, size_t, size_t, 107 mbstate_t * __restrict); 108 109 /* 110 * The "C" and "POSIX" locale are always here. 111 */ 112 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 113 _CurrentRuneLocale = &_DefaultRuneLocale; 114 __mb_cur_max = 1; 115 __mbrtowc = _none_mbrtowc; 116 __mbsinit = _none_mbsinit; 117 __mbsnrtowcs = _none_mbsnrtowcs; 118 __wcrtomb = _none_wcrtomb; 119 __wcsnrtombs = _none_wcsnrtombs; 120 return (0); 121 } 122 123 /* 124 * If the locale name is the same as our cache, use the cache. 125 */ 126 if (CachedRuneLocale != NULL && 127 strcmp(encoding, ctype_encoding) == 0) { 128 _CurrentRuneLocale = CachedRuneLocale; 129 __mb_cur_max = Cached__mb_cur_max; 130 __mbrtowc = Cached__mbrtowc; 131 __mbsinit = Cached__mbsinit; 132 __mbsnrtowcs = Cached__mbsnrtowcs; 133 __wcrtomb = Cached__wcrtomb; 134 __wcsnrtombs = Cached__wcsnrtombs; 135 return (0); 136 } 137 138 /* 139 * Slurp the locale file into the cache. 140 */ 141 142 /* Range checking not needed, encoding length already checked before */ 143 (void) strcpy(name, _PathLocale); 144 (void) strcat(name, "/"); 145 (void) strcat(name, encoding); 146 (void) strcat(name, "/LC_CTYPE"); 147 148 if ((fp = fopen(name, "r")) == NULL) 149 return (errno == 0 ? ENOENT : errno); 150 151 if ((rl = _Read_RuneMagi(fp)) == NULL) { 152 saverr = (errno == 0 ? EFTYPE : errno); 153 (void)fclose(fp); 154 return (saverr); 155 } 156 (void)fclose(fp); 157 158 __mbrtowc = NULL; 159 __mbsinit = NULL; 160 __mbsnrtowcs = __mbsnrtowcs_std; 161 __wcrtomb = NULL; 162 __wcsnrtombs = __wcsnrtombs_std; 163 rl->__sputrune = __emulated_sputrune; 164 rl->__sgetrune = __emulated_sgetrune; 165 if (strcmp(rl->__encoding, "NONE") == 0) 166 ret = _none_init(rl); 167 else if (strcmp(rl->__encoding, "UTF2") == 0) 168 ret = _UTF2_init(rl); 169 else if (strcmp(rl->__encoding, "UTF-8") == 0) 170 ret = _UTF8_init(rl); 171 else if (strcmp(rl->__encoding, "EUC") == 0) 172 ret = _EUC_init(rl); 173 else if (strcmp(rl->__encoding, "GB18030") == 0) 174 ret = _GB18030_init(rl); 175 else if (strcmp(rl->__encoding, "GB2312") == 0) 176 ret = _GB2312_init(rl); 177 else if (strcmp(rl->__encoding, "GBK") == 0) 178 ret = _GBK_init(rl); 179 else if (strcmp(rl->__encoding, "BIG5") == 0) 180 ret = _BIG5_init(rl); 181 else if (strcmp(rl->__encoding, "MSKanji") == 0) 182 ret = _MSKanji_init(rl); 183 else 184 ret = EFTYPE; 185 if (ret == 0) { 186 if (CachedRuneLocale != NULL) { 187 /* See euc.c */ 188 if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) 189 free(CachedRuneLocale->__variable); 190 free(CachedRuneLocale); 191 } 192 CachedRuneLocale = _CurrentRuneLocale; 193 Cached__mb_cur_max = __mb_cur_max; 194 Cached__mbrtowc = __mbrtowc; 195 Cached__mbsinit = __mbsinit; 196 Cached__mbsnrtowcs = __mbsnrtowcs; 197 Cached__wcrtomb = __wcrtomb; 198 Cached__wcsnrtombs = __wcsnrtombs; 199 (void)strcpy(ctype_encoding, encoding); 200 } else 201 free(rl); 202 203 return (ret); 204 } 205 206 int 207 __wrap_setrunelocale(const char *locale) 208 { 209 int ret = __setrunelocale(locale); 210 211 if (ret != 0) { 212 errno = ret; 213 return (_LDP_ERROR); 214 } 215 return (_LDP_LOADED); 216 } 217 218