1 /* 2 * Copyright (c) 1996 - 2002 FreeBSD Project 3 * Copyright (c) 1991, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Paul Borman at Krystal Technologies. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)setlocale.c 8.1 (Berkeley) 7/4/93 38 * $FreeBSD: src/lib/libc/locale/setlocale.c,v 1.25.2.8 2002/08/12 11:17:38 ache Exp $ 39 * $DragonFly: src/lib/libc/locale/setlocale.c,v 1.2 2003/06/17 04:26:44 dillon Exp $ 40 */ 41 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <errno.h> 45 #include <limits.h> 46 #include <locale.h> 47 #include <rune.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 #include "collate.h" 52 #include "lmonetary.h" /* for __monetary_load_locale() */ 53 #include "lnumeric.h" /* for __numeric_load_locale() */ 54 #include "lmessages.h" /* for __messages_load_locale() */ 55 #include "setlocale.h" 56 #include "ldpart.h" 57 #include "../stdtime/timelocal.h" /* for __time_load_locale() */ 58 59 /* 60 * Category names for getenv() 61 */ 62 static char *categories[_LC_LAST] = { 63 "LC_ALL", 64 "LC_COLLATE", 65 "LC_CTYPE", 66 "LC_MONETARY", 67 "LC_NUMERIC", 68 "LC_TIME", 69 "LC_MESSAGES", 70 }; 71 72 /* 73 * Current locales for each category 74 */ 75 static char current_categories[_LC_LAST][ENCODING_LEN + 1] = { 76 "C", 77 "C", 78 "C", 79 "C", 80 "C", 81 "C", 82 "C", 83 }; 84 85 /* 86 * The locales we are going to try and load 87 */ 88 static char new_categories[_LC_LAST][ENCODING_LEN + 1]; 89 static char saved_categories[_LC_LAST][ENCODING_LEN + 1]; 90 91 static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)]; 92 93 static char *currentlocale(void); 94 static int wrap_setrunelocale(const char *); 95 static char *loadlocale(int); 96 97 char * 98 setlocale(category, locale) 99 int category; 100 const char *locale; 101 { 102 int i, j, len, saverr; 103 char *env, *r; 104 105 if (category < LC_ALL || category >= _LC_LAST) { 106 errno = EINVAL; 107 return (NULL); 108 } 109 110 if (locale == NULL) 111 return (category != LC_ALL ? 112 current_categories[category] : currentlocale()); 113 114 /* 115 * Default to the current locale for everything. 116 */ 117 for (i = 1; i < _LC_LAST; ++i) 118 (void)strcpy(new_categories[i], current_categories[i]); 119 120 /* 121 * Now go fill up new_categories from the locale argument 122 */ 123 if (!*locale) { 124 env = getenv("LC_ALL"); 125 126 if (category != LC_ALL && (env == NULL || !*env)) 127 env = getenv(categories[category]); 128 129 if (env == NULL || !*env) 130 env = getenv("LANG"); 131 132 if (env == NULL || !*env) 133 env = "C"; 134 135 if (strlen(env) > ENCODING_LEN) { 136 errno = EINVAL; 137 return (NULL); 138 } 139 (void)strcpy(new_categories[category], env); 140 141 if (category == LC_ALL) { 142 for (i = 1; i < _LC_LAST; ++i) { 143 if ((env = getenv(categories[i])) == NULL || 144 !*env) 145 env = new_categories[LC_ALL]; 146 else if (strlen(env) > ENCODING_LEN) { 147 errno = EINVAL; 148 return (NULL); 149 } 150 (void)strcpy(new_categories[i], env); 151 } 152 } 153 } else if (category != LC_ALL) { 154 if (strlen(locale) > ENCODING_LEN) { 155 errno = EINVAL; 156 return (NULL); 157 } 158 (void)strcpy(new_categories[category], locale); 159 } else { 160 if ((r = strchr(locale, '/')) == NULL) { 161 if (strlen(locale) > ENCODING_LEN) { 162 errno = EINVAL; 163 return (NULL); 164 } 165 for (i = 1; i < _LC_LAST; ++i) 166 (void)strcpy(new_categories[i], locale); 167 } else { 168 for (i = 1; r[1] == '/'; ++r) 169 ; 170 if (!r[1]) { 171 errno = EINVAL; 172 return (NULL); /* Hmm, just slashes... */ 173 } 174 do { 175 if (i == _LC_LAST) 176 break; /* Too many slashes... */ 177 if ((len = r - locale) > ENCODING_LEN) { 178 errno = EINVAL; 179 return (NULL); 180 } 181 (void)strlcpy(new_categories[i], locale, 182 len + 1); 183 i++; 184 locale = r; 185 while (*locale == '/') 186 ++locale; 187 while (*++r && *r != '/') 188 ; 189 } while (*locale); 190 while (i < _LC_LAST) { 191 (void)strcpy(new_categories[i], 192 new_categories[i-1]); 193 i++; 194 } 195 } 196 } 197 198 if (category != LC_ALL) 199 return (loadlocale(category)); 200 201 for (i = 1; i < _LC_LAST; ++i) { 202 (void)strcpy(saved_categories[i], current_categories[i]); 203 if (loadlocale(i) == NULL) { 204 saverr = errno; 205 for (j = 1; j < i; j++) { 206 (void)strcpy(new_categories[j], 207 saved_categories[j]); 208 if (loadlocale(j) == NULL) { 209 (void)strcpy(new_categories[j], "C"); 210 (void)loadlocale(j); 211 } 212 } 213 errno = saverr; 214 return (NULL); 215 } 216 } 217 return (currentlocale()); 218 } 219 220 static char * 221 currentlocale() 222 { 223 int i; 224 225 (void)strcpy(current_locale_string, current_categories[1]); 226 227 for (i = 2; i < _LC_LAST; ++i) 228 if (strcmp(current_categories[1], current_categories[i])) { 229 for (i = 2; i < _LC_LAST; ++i) { 230 (void)strcat(current_locale_string, "/"); 231 (void)strcat(current_locale_string, 232 current_categories[i]); 233 } 234 break; 235 } 236 return (current_locale_string); 237 } 238 239 static int 240 wrap_setrunelocale(const char *locale) 241 { 242 int ret = setrunelocale((char *)locale); 243 244 if (ret != 0) { 245 errno = ret; 246 return (_LDP_ERROR); 247 } 248 return (_LDP_LOADED); 249 } 250 251 static char * 252 loadlocale(category) 253 int category; 254 { 255 char *new = new_categories[category]; 256 char *old = current_categories[category]; 257 int (*func)(const char *); 258 259 if ((new[0] == '.' && 260 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) || 261 strchr(new, '/') != NULL) { 262 errno = EINVAL; 263 return (NULL); 264 } 265 266 if (_PathLocale == NULL) { 267 char *p = getenv("PATH_LOCALE"); 268 269 if (p != NULL 270 #ifndef __NETBSD_SYSCALLS 271 && !issetugid() 272 #endif 273 ) { 274 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + 275 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) { 276 errno = ENAMETOOLONG; 277 return (NULL); 278 } 279 _PathLocale = strdup(p); 280 if (_PathLocale == NULL) { 281 errno = ENOMEM; 282 return (NULL); 283 } 284 } else 285 _PathLocale = _PATH_LOCALE; 286 } 287 288 switch (category) { 289 case LC_CTYPE: 290 func = wrap_setrunelocale; 291 break; 292 case LC_COLLATE: 293 func = __collate_load_tables; 294 break; 295 case LC_TIME: 296 func = __time_load_locale; 297 break; 298 case LC_NUMERIC: 299 func = __numeric_load_locale; 300 break; 301 case LC_MONETARY: 302 func = __monetary_load_locale; 303 break; 304 case LC_MESSAGES: 305 func = __messages_load_locale; 306 break; 307 default: 308 errno = EINVAL; 309 return (NULL); 310 } 311 312 if (strcmp(new, old) == 0) 313 return (old); 314 315 if (func(new) != _LDP_ERROR) { 316 (void)strcpy(old, new); 317 return (old); 318 } 319 320 return (NULL); 321 } 322 323