1 /* 2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 3 * Copyright (c) 1996 - 2002 FreeBSD Project 4 * Copyright (c) 1991, 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 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "lint.h" 36 #include <sys/types.h> 37 #include <sys/stat.h> 38 #include <errno.h> 39 #include <limits.h> 40 #include <locale.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <alloca.h> 45 #include <stdio.h> 46 #include "collate.h" 47 #include "lmonetary.h" /* for __monetary_load_locale() */ 48 #include "lnumeric.h" /* for __numeric_load_locale() */ 49 #include "lmessages.h" /* for __messages_load_locale() */ 50 #include "setlocale.h" 51 #include "ldpart.h" 52 #include "timelocal.h" /* for __time_load_locale() */ 53 #include "../i18n/_loc_path.h" 54 55 /* 56 * Category names for getenv() Note that this was modified 57 * for Solaris. See <iso/locale_iso.h>. 58 */ 59 #define NUM_CATS 7 60 static char *categories[7] = { 61 "LC_CTYPE", 62 "LC_NUMERIC", 63 "LC_TIME", 64 "LC_COLLATE", 65 "LC_MONETARY", 66 "LC_MESSAGES", 67 "LC_ALL", 68 }; 69 70 /* 71 * Current locales for each category 72 */ 73 static char current_categories[NUM_CATS][ENCODING_LEN + 1] = { 74 "C", 75 "C", 76 "C", 77 "C", 78 "C", 79 "C", 80 "C", 81 }; 82 83 /* 84 * Path to locale storage directory. See ../i18n/_loc_path.h 85 */ 86 char *_PathLocale = _DFLT_LOC_PATH; 87 88 /* 89 * The locales we are going to try and load 90 */ 91 static char new_categories[NUM_CATS][ENCODING_LEN + 1]; 92 static char saved_categories[NUM_CATS][ENCODING_LEN + 1]; 93 static char current_locale_string[NUM_CATS * (ENCODING_LEN + 1 + 1)]; 94 95 static char *currentlocale(void); 96 static char *loadlocale(int); 97 static const char *__get_locale_env(int); 98 99 char * 100 setlocale(int category, const char *locale) 101 { 102 int i, j, saverr; 103 const char *env, *r; 104 105 if (category < 0 || category >= NUM_CATS) { 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 = 0; i < NUM_CATS; ++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 if (category == LC_ALL) { 125 for (i = 0; i < NUM_CATS; ++i) { 126 if (i == LC_ALL) 127 continue; 128 env = __get_locale_env(i); 129 if (strlen(env) > ENCODING_LEN) { 130 errno = EINVAL; 131 return (NULL); 132 } 133 (void) strcpy(new_categories[i], env); 134 } 135 } else { 136 env = __get_locale_env(category); 137 if (strlen(env) > ENCODING_LEN) { 138 errno = EINVAL; 139 return (NULL); 140 } 141 (void) strcpy(new_categories[category], env); 142 } 143 } else if (category != LC_ALL) { 144 if (strlen(locale) > ENCODING_LEN) { 145 errno = EINVAL; 146 return (NULL); 147 } 148 (void) strcpy(new_categories[category], locale); 149 } else { 150 if ((r = strchr(locale, '/')) == NULL) { 151 if (strlen(locale) > ENCODING_LEN) { 152 errno = EINVAL; 153 return (NULL); 154 } 155 for (i = 0; i < NUM_CATS; ++i) 156 (void) strcpy(new_categories[i], locale); 157 } else { 158 char *buf; 159 char *save; 160 161 buf = alloca(strlen(locale) + 1); 162 (void) strcpy(buf, locale); 163 164 save = NULL; 165 r = strtok_r(buf, "/", &save); 166 for (i = 0; i < NUM_CATS; i++) { 167 if (i == LC_ALL) 168 continue; 169 if (r == NULL) { 170 /* 171 * Composite Locale is inadequately 172 * specified! (Or with empty fields.) 173 * The old code would fill fields 174 * out from the last one, but I think 175 * this is suboptimal. 176 */ 177 errno = EINVAL; 178 return (NULL); 179 } 180 (void) strlcpy(new_categories[i], r, 181 ENCODING_LEN); 182 r = strtok_r(NULL, "/", &save); 183 } 184 if (r != NULL) { 185 /* 186 * Too many components - we had left over 187 * data in the LC_ALL. It is malformed. 188 */ 189 errno = EINVAL; 190 return (NULL); 191 } 192 } 193 } 194 195 if (category != LC_ALL) 196 return (loadlocale(category)); 197 198 for (i = 0; i < NUM_CATS; ++i) { 199 (void) strcpy(saved_categories[i], current_categories[i]); 200 if (i == LC_ALL) 201 continue; 202 if (loadlocale(i) == NULL) { 203 saverr = errno; 204 for (j = 0; j < i; j++) { 205 (void) strcpy(new_categories[j], 206 saved_categories[j]); 207 if (i == LC_ALL) 208 continue; 209 if (loadlocale(j) == NULL) { 210 (void) strcpy(new_categories[j], "C"); 211 (void) loadlocale(j); 212 } 213 } 214 errno = saverr; 215 return (NULL); 216 } 217 } 218 return (currentlocale()); 219 } 220 221 static char * 222 currentlocale(void) 223 { 224 int i; 225 int composite = 0; 226 227 /* Look to see if any category is different */ 228 for (i = 1; i < NUM_CATS; ++i) { 229 if (i == LC_ALL) 230 continue; 231 if (strcmp(current_categories[0], current_categories[i])) { 232 composite = 1; 233 break; 234 } 235 } 236 237 if (composite) { 238 /* 239 * Note ordering of these follows the numeric order, 240 * if the order is changed, then setlocale() will need 241 * to be changed as well. 242 */ 243 (void) snprintf(current_locale_string, 244 sizeof (current_locale_string), 245 "%s/%s/%s/%s/%s/%s", 246 current_categories[LC_CTYPE], 247 current_categories[LC_NUMERIC], 248 current_categories[LC_TIME], 249 current_categories[LC_COLLATE], 250 current_categories[LC_MONETARY], 251 current_categories[LC_MESSAGES]); 252 } else { 253 (void) strlcpy(current_locale_string, current_categories[0], 254 sizeof (current_locale_string)); 255 } 256 return (current_locale_string); 257 } 258 259 static char * 260 loadlocale(int category) 261 { 262 char *new = new_categories[category]; 263 char *old = current_categories[category]; 264 int (*func)(const char *); 265 266 if ((new[0] == '.' && 267 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) || 268 strchr(new, '/') != NULL) { 269 errno = EINVAL; 270 return (NULL); 271 } 272 273 switch (category) { 274 case LC_CTYPE: 275 func = __wrap_setrunelocale; 276 break; 277 case LC_COLLATE: 278 func = _collate_load_tables; 279 break; 280 case LC_TIME: 281 func = __time_load_locale; 282 break; 283 case LC_NUMERIC: 284 func = __numeric_load_locale; 285 break; 286 case LC_MONETARY: 287 func = __monetary_load_locale; 288 break; 289 case LC_MESSAGES: 290 func = __messages_load_locale; 291 break; 292 default: 293 errno = EINVAL; 294 return (NULL); 295 } 296 297 if (strcmp(new, old) == 0) 298 return (old); 299 300 if (func(new) != _LDP_ERROR) { 301 (void) strcpy(old, new); 302 return (old); 303 } 304 305 return (NULL); 306 } 307 308 static const char * 309 __get_locale_env(int category) 310 { 311 const char *env; 312 313 /* 1. check LC_ALL. */ 314 env = getenv(categories[LC_ALL]); 315 316 /* 2. check LC_* */ 317 if (env == NULL || !*env) 318 env = getenv(categories[category]); 319 320 /* 3. check LANG */ 321 if (env == NULL || !*env) 322 env = getenv("LANG"); 323 324 /* 4. if none is set, fall to "C" */ 325 if (env == NULL || !*env) 326 env = "C"; 327 328 return (env); 329 } 330