1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Paul Borman at Krystal Technologies. 9 * 10 * Copyright (c) 2011 The FreeBSD Foundation 11 * 12 * Portions of this software were developed by David Chisnall 13 * under sponsorship from the FreeBSD Foundation. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #define __RUNETYPE_INTERNAL 1 41 42 #include <runetype.h> 43 #include <errno.h> 44 #include <limits.h> 45 #include <string.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 #include <wchar.h> 50 #include "ldpart.h" 51 #include "mblocal.h" 52 #include "setlocale.h" 53 54 #undef _CurrentRuneLocale 55 extern _RuneLocale const *_CurrentRuneLocale; 56 /* 57 * A cached version of the runes for this thread. Used by ctype.h 58 */ 59 _Thread_local const _RuneLocale *_ThreadRuneLocale; 60 61 extern int __mb_sb_limit; 62 63 extern _RuneLocale *_Read_RuneMagi(const char *); 64 65 static int __setrunelocale(struct xlocale_ctype *l, const char *); 66 67 static void 68 destruct_ctype(void *v) 69 { 70 struct xlocale_ctype *l = v; 71 72 if (&_DefaultRuneLocale != l->runes) 73 free(l->runes); 74 free(l); 75 } 76 77 const _RuneLocale * 78 __getCurrentRuneLocale(void) 79 { 80 81 return (XLOCALE_CTYPE(__get_locale())->runes); 82 } 83 84 static void 85 free_runes(_RuneLocale *rl) 86 { 87 if ((rl != &_DefaultRuneLocale) && (rl)) { 88 free(rl); 89 } 90 } 91 92 static int 93 __setrunelocale(struct xlocale_ctype *l, const char *encoding) 94 { 95 _RuneLocale *rl; 96 int ret; 97 char *path; 98 struct xlocale_ctype saved = *l; 99 100 /* 101 * The "C" and "POSIX" locale are always here. 102 */ 103 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 104 free_runes(saved.runes); 105 (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); 106 return (0); 107 } 108 109 /* Range checking not needed, encoding length already checked before */ 110 if (asprintf(&path, "%s/%s/LC_CTYPE", _PathLocale, encoding) == -1) 111 return (errno); 112 113 if ((rl = _Read_RuneMagi(path)) == NULL) { 114 free(path); 115 errno = EINVAL; 116 return (errno); 117 } 118 free(path); 119 120 l->__mbrtowc = NULL; 121 l->__mbsinit = NULL; 122 l->__mbsnrtowcs = NULL; 123 l->__wcrtomb = NULL; 124 l->__wcsnrtombs = NULL; 125 126 rl->__sputrune = NULL; 127 rl->__sgetrune = NULL; 128 if (strcmp(rl->__encoding, "NONE:US-ASCII") == 0) 129 ret = _ascii_init(l, rl); 130 else if (strncmp(rl->__encoding, "NONE", 4) == 0) 131 ret = _none_init(l, rl); 132 else if (strcmp(rl->__encoding, "UTF-8") == 0) 133 ret = _UTF8_init(l, rl); 134 else if (strcmp(rl->__encoding, "EUC-CN") == 0) 135 ret = _EUC_CN_init(l, rl); 136 else if (strcmp(rl->__encoding, "EUC-JP") == 0) 137 ret = _EUC_JP_init(l, rl); 138 else if (strcmp(rl->__encoding, "EUC-KR") == 0) 139 ret = _EUC_KR_init(l, rl); 140 else if (strcmp(rl->__encoding, "EUC-TW") == 0) 141 ret = _EUC_TW_init(l, rl); 142 else if (strcmp(rl->__encoding, "GB18030") == 0) 143 ret = _GB18030_init(l, rl); 144 else if (strcmp(rl->__encoding, "GB2312") == 0) 145 ret = _GB2312_init(l, rl); 146 else if (strcmp(rl->__encoding, "GBK") == 0) 147 ret = _GBK_init(l, rl); 148 else if (strcmp(rl->__encoding, "BIG5") == 0) 149 ret = _BIG5_init(l, rl); 150 else if (strcmp(rl->__encoding, "MSKanji") == 0) 151 ret = _MSKanji_init(l, rl); 152 else 153 ret = EFTYPE; 154 155 if (ret == 0) { 156 /* Free the old runes if it exists. */ 157 free_runes(saved.runes); 158 /* Reset the mbstates */ 159 memset(&l->c16rtomb, 0, sizeof(l->c16rtomb)); 160 memset(&l->c32rtomb, 0, sizeof(l->c32rtomb)); 161 memset(&l->mblen, 0, sizeof(l->mblen)); 162 memset(&l->mbrlen, 0, sizeof(l->mbrlen)); 163 memset(&l->mbrtoc16, 0, sizeof(l->mbrtoc16)); 164 memset(&l->mbrtoc32, 0, sizeof(l->mbrtoc32)); 165 memset(&l->mbrtowc, 0, sizeof(l->mbrtowc)); 166 memset(&l->mbsnrtowcs, 0, sizeof(l->mbsnrtowcs)); 167 memset(&l->mbsrtowcs, 0, sizeof(l->mbsrtowcs)); 168 memset(&l->mbtowc, 0, sizeof(l->mbtowc)); 169 memset(&l->wcrtomb, 0, sizeof(l->wcrtomb)); 170 memset(&l->wcsnrtombs, 0, sizeof(l->wcsnrtombs)); 171 memset(&l->wcsrtombs, 0, sizeof(l->wcsrtombs)); 172 memset(&l->wctomb, 0, sizeof(l->wctomb)); 173 } else { 174 /* Restore the saved version if this failed. */ 175 memcpy(l, &saved, sizeof(struct xlocale_ctype)); 176 free(rl); 177 } 178 179 return (ret); 180 } 181 182 int 183 __wrap_setrunelocale(const char *locale) 184 { 185 int ret = __setrunelocale(&__xlocale_global_ctype, locale); 186 187 if (ret != 0) { 188 errno = ret; 189 return (_LDP_ERROR); 190 } 191 __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; 192 __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; 193 _CurrentRuneLocale = __xlocale_global_ctype.runes; 194 return (_LDP_LOADED); 195 } 196 197 void 198 __set_thread_rune_locale(locale_t loc) 199 { 200 201 if (loc == NULL) { 202 _ThreadRuneLocale = &_DefaultRuneLocale; 203 } else if (loc == LC_GLOBAL_LOCALE) { 204 _ThreadRuneLocale = 0; 205 } else { 206 _ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes; 207 } 208 } 209 210 void * 211 __ctype_load(const char *locale, locale_t unused __unused) 212 { 213 struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); 214 if (l == NULL) 215 return (NULL); 216 217 l->header.header.destructor = destruct_ctype; 218 if (__setrunelocale(l, locale)) { 219 free(l); 220 return (NULL); 221 } 222 return (l); 223 } 224