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: src/lib/libc/locale/setlocale.c,v 1.25.2.8 2002/08/12 11:17:38 ache Exp $"); 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 <rune.h> 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 * The locales we are going to try and load 89 */ 90 static char new_categories[_LC_LAST][ENCODING_LEN + 1]; 91 static char saved_categories[_LC_LAST][ENCODING_LEN + 1]; 92 93 static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)]; 94 95 static char *currentlocale(void); 96 static int wrap_setrunelocale(const char *); 97 static char *loadlocale(int); 98 99 char * 100 setlocale(category, locale) 101 int category; 102 const char *locale; 103 { 104 int i, j, len, saverr; 105 char *env, *r; 106 107 if (category < LC_ALL || category >= _LC_LAST) { 108 errno = EINVAL; 109 return (NULL); 110 } 111 112 if (locale == NULL) 113 return (category != LC_ALL ? 114 current_categories[category] : currentlocale()); 115 116 /* 117 * Default to the current locale for everything. 118 */ 119 for (i = 1; i < _LC_LAST; ++i) 120 (void)strcpy(new_categories[i], current_categories[i]); 121 122 /* 123 * Now go fill up new_categories from the locale argument 124 */ 125 if (!*locale) { 126 env = getenv("LC_ALL"); 127 128 if (category != LC_ALL && (env == NULL || !*env)) 129 env = getenv(categories[category]); 130 131 if (env == NULL || !*env) 132 env = getenv("LANG"); 133 134 if (env == NULL || !*env) 135 env = "C"; 136 137 if (strlen(env) > ENCODING_LEN) { 138 errno = EINVAL; 139 return (NULL); 140 } 141 (void)strcpy(new_categories[category], env); 142 143 if (category == LC_ALL) { 144 for (i = 1; i < _LC_LAST; ++i) { 145 if ((env = getenv(categories[i])) == NULL || 146 !*env) 147 env = new_categories[LC_ALL]; 148 else if (strlen(env) > ENCODING_LEN) { 149 errno = EINVAL; 150 return (NULL); 151 } 152 (void)strcpy(new_categories[i], env); 153 } 154 } 155 } else if (category != LC_ALL) { 156 if (strlen(locale) > ENCODING_LEN) { 157 errno = EINVAL; 158 return (NULL); 159 } 160 (void)strcpy(new_categories[category], locale); 161 } else { 162 if ((r = strchr(locale, '/')) == NULL) { 163 if (strlen(locale) > ENCODING_LEN) { 164 errno = EINVAL; 165 return (NULL); 166 } 167 for (i = 1; i < _LC_LAST; ++i) 168 (void)strcpy(new_categories[i], locale); 169 } else { 170 for (i = 1; r[1] == '/'; ++r) 171 ; 172 if (!r[1]) { 173 errno = EINVAL; 174 return (NULL); /* Hmm, just slashes... */ 175 } 176 do { 177 if (i == _LC_LAST) 178 break; /* Too many slashes... */ 179 if ((len = r - locale) > ENCODING_LEN) { 180 errno = EINVAL; 181 return (NULL); 182 } 183 (void)strlcpy(new_categories[i], locale, 184 len + 1); 185 i++; 186 locale = r; 187 while (*locale == '/') 188 ++locale; 189 while (*++r && *r != '/') 190 ; 191 } while (*locale); 192 while (i < _LC_LAST) { 193 (void)strcpy(new_categories[i], 194 new_categories[i-1]); 195 i++; 196 } 197 } 198 } 199 200 if (category != LC_ALL) 201 return (loadlocale(category)); 202 203 for (i = 1; i < _LC_LAST; ++i) { 204 (void)strcpy(saved_categories[i], current_categories[i]); 205 if (loadlocale(i) == NULL) { 206 saverr = errno; 207 for (j = 1; j < i; j++) { 208 (void)strcpy(new_categories[j], 209 saved_categories[j]); 210 if (loadlocale(j) == NULL) { 211 (void)strcpy(new_categories[j], "C"); 212 (void)loadlocale(j); 213 } 214 } 215 errno = saverr; 216 return (NULL); 217 } 218 } 219 return (currentlocale()); 220 } 221 222 static char * 223 currentlocale() 224 { 225 int i; 226 227 (void)strcpy(current_locale_string, current_categories[1]); 228 229 for (i = 2; i < _LC_LAST; ++i) 230 if (strcmp(current_categories[1], current_categories[i])) { 231 for (i = 2; i < _LC_LAST; ++i) { 232 (void)strcat(current_locale_string, "/"); 233 (void)strcat(current_locale_string, 234 current_categories[i]); 235 } 236 break; 237 } 238 return (current_locale_string); 239 } 240 241 static int 242 wrap_setrunelocale(const char *locale) 243 { 244 int ret = setrunelocale((char *)locale); 245 246 if (ret != 0) { 247 errno = ret; 248 return (_LDP_ERROR); 249 } 250 return (_LDP_LOADED); 251 } 252 253 static char * 254 loadlocale(category) 255 int category; 256 { 257 char *new = new_categories[category]; 258 char *old = current_categories[category]; 259 int (*func)(const char *); 260 261 if ((new[0] == '.' && 262 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) || 263 strchr(new, '/') != NULL) { 264 errno = EINVAL; 265 return (NULL); 266 } 267 268 if (_PathLocale == NULL) { 269 char *p = getenv("PATH_LOCALE"); 270 271 if (p != NULL 272 #ifndef __NETBSD_SYSCALLS 273 && !issetugid() 274 #endif 275 ) { 276 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + 277 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) { 278 errno = ENAMETOOLONG; 279 return (NULL); 280 } 281 _PathLocale = strdup(p); 282 if (_PathLocale == NULL) { 283 errno = ENOMEM; 284 return (NULL); 285 } 286 } else 287 _PathLocale = _PATH_LOCALE; 288 } 289 290 switch (category) { 291 case LC_CTYPE: 292 func = wrap_setrunelocale; 293 break; 294 case LC_COLLATE: 295 func = __collate_load_tables; 296 break; 297 case LC_TIME: 298 func = __time_load_locale; 299 break; 300 case LC_NUMERIC: 301 func = __numeric_load_locale; 302 break; 303 case LC_MONETARY: 304 func = __monetary_load_locale; 305 break; 306 case LC_MESSAGES: 307 func = __messages_load_locale; 308 break; 309 default: 310 errno = EINVAL; 311 return (NULL); 312 } 313 314 if (strcmp(new, old) == 0) 315 return (old); 316 317 if (func(new) != _LDP_ERROR) { 318 (void)strcpy(old, new); 319 return (old); 320 } 321 322 return (NULL); 323 } 324 325