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 38 #if defined(LIBC_SCCS) && !defined(lint) 39 static char sccsid[] = "@(#)setlocale.c 8.1 (Berkeley) 7/4/93"; 40 #endif /* LIBC_SCCS and not lint */ 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include <errno.h> 47 #include <limits.h> 48 #include <locale.h> 49 #include <paths.h> /* for _PATH_LOCALE */ 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include "collate.h" 54 #include "lmonetary.h" /* for __monetary_load_locale() */ 55 #include "lnumeric.h" /* for __numeric_load_locale() */ 56 #include "lmessages.h" /* for __messages_load_locale() */ 57 #include "setlocale.h" 58 #include "ldpart.h" 59 #include "../stdtime/timelocal.h" /* for __time_load_locale() */ 60 61 /* 62 * Category names for getenv() 63 */ 64 static char *categories[_LC_LAST] = { 65 "LC_ALL", 66 "LC_COLLATE", 67 "LC_CTYPE", 68 "LC_MONETARY", 69 "LC_NUMERIC", 70 "LC_TIME", 71 "LC_MESSAGES", 72 }; 73 74 /* 75 * Current locales for each category 76 */ 77 static char current_categories[_LC_LAST][ENCODING_LEN + 1] = { 78 "C", 79 "C", 80 "C", 81 "C", 82 "C", 83 "C", 84 "C", 85 }; 86 87 /* 88 * Path to locale storage directory 89 */ 90 char *_PathLocale; 91 92 /* 93 * The locales we are going to try and load 94 */ 95 static char new_categories[_LC_LAST][ENCODING_LEN + 1]; 96 static char saved_categories[_LC_LAST][ENCODING_LEN + 1]; 97 98 static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)]; 99 100 static char *currentlocale(void); 101 static char *loadlocale(int); 102 103 char * 104 setlocale(category, locale) 105 int category; 106 const char *locale; 107 { 108 int i, j, len, saverr; 109 char *env, *r; 110 111 if (category < LC_ALL || category >= _LC_LAST) { 112 errno = EINVAL; 113 return (NULL); 114 } 115 116 if (locale == NULL) 117 return (category != LC_ALL ? 118 current_categories[category] : currentlocale()); 119 120 /* 121 * Default to the current locale for everything. 122 */ 123 for (i = 1; i < _LC_LAST; ++i) 124 (void)strcpy(new_categories[i], current_categories[i]); 125 126 /* 127 * Now go fill up new_categories from the locale argument 128 */ 129 if (!*locale) { 130 env = getenv("LC_ALL"); 131 132 if (category != LC_ALL && (env == NULL || !*env)) 133 env = getenv(categories[category]); 134 135 if (env == NULL || !*env) 136 env = getenv("LANG"); 137 138 if (env == NULL || !*env) 139 env = "C"; 140 141 if (strlen(env) > ENCODING_LEN) { 142 errno = EINVAL; 143 return (NULL); 144 } 145 (void)strcpy(new_categories[category], env); 146 147 if (category == LC_ALL) { 148 for (i = 1; i < _LC_LAST; ++i) { 149 if ((env = getenv(categories[i])) == NULL || 150 !*env) 151 env = new_categories[LC_ALL]; 152 else if (strlen(env) > ENCODING_LEN) { 153 errno = EINVAL; 154 return (NULL); 155 } 156 (void)strcpy(new_categories[i], env); 157 } 158 } 159 } else if (category != LC_ALL) { 160 if (strlen(locale) > ENCODING_LEN) { 161 errno = EINVAL; 162 return (NULL); 163 } 164 (void)strcpy(new_categories[category], locale); 165 } else { 166 if ((r = strchr(locale, '/')) == NULL) { 167 if (strlen(locale) > ENCODING_LEN) { 168 errno = EINVAL; 169 return (NULL); 170 } 171 for (i = 1; i < _LC_LAST; ++i) 172 (void)strcpy(new_categories[i], locale); 173 } else { 174 for (i = 1; r[1] == '/'; ++r) 175 ; 176 if (!r[1]) { 177 errno = EINVAL; 178 return (NULL); /* Hmm, just slashes... */ 179 } 180 do { 181 if (i == _LC_LAST) 182 break; /* Too many slashes... */ 183 if ((len = r - locale) > ENCODING_LEN) { 184 errno = EINVAL; 185 return (NULL); 186 } 187 (void)strlcpy(new_categories[i], locale, 188 len + 1); 189 i++; 190 locale = r; 191 while (*locale == '/') 192 ++locale; 193 while (*++r && *r != '/') 194 ; 195 } while (*locale); 196 while (i < _LC_LAST) { 197 (void)strcpy(new_categories[i], 198 new_categories[i-1]); 199 i++; 200 } 201 } 202 } 203 204 if (category != LC_ALL) 205 return (loadlocale(category)); 206 207 for (i = 1; i < _LC_LAST; ++i) { 208 (void)strcpy(saved_categories[i], current_categories[i]); 209 if (loadlocale(i) == NULL) { 210 saverr = errno; 211 for (j = 1; j < i; j++) { 212 (void)strcpy(new_categories[j], 213 saved_categories[j]); 214 if (loadlocale(j) == NULL) { 215 (void)strcpy(new_categories[j], "C"); 216 (void)loadlocale(j); 217 } 218 } 219 errno = saverr; 220 return (NULL); 221 } 222 } 223 return (currentlocale()); 224 } 225 226 static char * 227 currentlocale() 228 { 229 int i; 230 231 (void)strcpy(current_locale_string, current_categories[1]); 232 233 for (i = 2; i < _LC_LAST; ++i) 234 if (strcmp(current_categories[1], current_categories[i])) { 235 for (i = 2; i < _LC_LAST; ++i) { 236 (void)strcat(current_locale_string, "/"); 237 (void)strcat(current_locale_string, 238 current_categories[i]); 239 } 240 break; 241 } 242 return (current_locale_string); 243 } 244 245 static char * 246 loadlocale(category) 247 int category; 248 { 249 char *new = new_categories[category]; 250 char *old = current_categories[category]; 251 int (*func)(const char *); 252 int saved_errno; 253 254 if ((new[0] == '.' && 255 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) || 256 strchr(new, '/') != NULL) { 257 errno = EINVAL; 258 return (NULL); 259 } 260 261 saved_errno = errno; 262 errno = __detect_path_locale(); 263 if (errno != 0) 264 return (NULL); 265 errno = saved_errno; 266 267 switch (category) { 268 case LC_CTYPE: 269 func = __wrap_setrunelocale; 270 break; 271 case LC_COLLATE: 272 func = __collate_load_tables; 273 break; 274 case LC_TIME: 275 func = __time_load_locale; 276 break; 277 case LC_NUMERIC: 278 func = __numeric_load_locale; 279 break; 280 case LC_MONETARY: 281 func = __monetary_load_locale; 282 break; 283 case LC_MESSAGES: 284 func = __messages_load_locale; 285 break; 286 default: 287 errno = EINVAL; 288 return (NULL); 289 } 290 291 if (strcmp(new, old) == 0) 292 return (old); 293 294 if (func(new) != _LDP_ERROR) { 295 (void)strcpy(old, new); 296 return (old); 297 } 298 299 return (NULL); 300 } 301 302 /* 303 * Detect locale storage location and store its value to _PathLocale variable 304 */ 305 int 306 __detect_path_locale(void) 307 { 308 if (_PathLocale == NULL) { 309 char *p = getenv("PATH_LOCALE"); 310 311 if (p != NULL 312 #ifndef __NETBSD_SYSCALLS 313 && !issetugid() 314 #endif 315 ) { 316 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + 317 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) 318 return (ENAMETOOLONG); 319 _PathLocale = strdup(p); 320 if (_PathLocale == NULL) 321 return (errno == 0 ? ENOMEM : errno); 322 } else 323 _PathLocale = _PATH_LOCALE; 324 } 325 return (0); 326 } 327 328