1 /*- 2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 3 * at Electronni Visti IA, Kiev, Ukraine. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/lib/libc/locale/collate.c,v 1.21.2.4 2002/10/11 10:36:47 ache Exp $ 28 * $DragonFly: src/lib/libc/locale/collate.c,v 1.7 2005/11/13 01:20:49 swildner Exp $ 29 */ 30 31 #include "namespace.h" 32 #include <arpa/inet.h> 33 #include <rune.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <errno.h> 38 #include <unistd.h> 39 #include <sysexits.h> 40 #include "un-namespace.h" 41 42 #include "collate.h" 43 44 #define ENCODING_LEN 31 45 #define _LDP_LOADED 0 46 #define _LDP_ERROR (-1) 47 #define _LDP_CACHE 1 48 49 int __collate_load_error = 1; 50 int __collate_substitute_nontrivial; 51 52 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 53 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 54 struct __collate_st_chain_pri *__collate_chain_pri_table; 55 56 void __collate_err(int ex, const char *f) __dead2; 57 58 int 59 __collate_load_tables(const char *encoding) 60 { 61 FILE *fp; 62 int i, saverr, chains; 63 uint32_t u32; 64 char strbuf[STR_LEN], buf[PATH_MAX]; 65 void *TMP_substitute_table, *TMP_char_pri_table, *TMP_chain_pri_table; 66 static char collate_encoding[ENCODING_LEN + 1]; 67 68 /* 'encoding' must be already checked. */ 69 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 70 __collate_load_error = 1; 71 return (_LDP_CACHE); 72 } 73 74 /* 75 * If the locale name is the same as our cache, use the cache. 76 */ 77 if (strcmp(encoding, collate_encoding) == 0) { 78 __collate_load_error = 0; 79 return (_LDP_CACHE); 80 } 81 82 /* 83 * Slurp the locale file into the cache. 84 */ 85 86 /* 'PathLocale' must be already set & checked. */ 87 /* Range checking not needed, encoding has fixed size */ 88 strcpy(buf, _PathLocale); 89 strcat(buf, "/"); 90 strcat(buf, encoding); 91 strcat(buf, "/LC_COLLATE"); 92 if ((fp = fopen(buf, "r")) == NULL) 93 return (_LDP_ERROR); 94 95 if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) { 96 saverr = errno; 97 fclose(fp); 98 errno = saverr; 99 return (_LDP_ERROR); 100 } 101 chains = -1; 102 if (strcmp(strbuf, COLLATE_VERSION) == 0) 103 chains = 0; 104 else if (strcmp(strbuf, COLLATE_VERSION1_1) == 0) 105 chains = 1; 106 if (chains < 0) { 107 fclose(fp); 108 errno = EFTYPE; 109 return (_LDP_ERROR); 110 } 111 if (chains) { 112 if (fread(&u32, sizeof(u32), 1, fp) != 1) { 113 saverr = errno; 114 fclose(fp); 115 errno = saverr; 116 return (_LDP_ERROR); 117 } 118 if ((chains = (int)ntohl(u32)) < 1) { 119 fclose(fp); 120 errno = EFTYPE; 121 return (_LDP_ERROR); 122 } 123 } else 124 chains = TABLE_SIZE; 125 126 if ((TMP_substitute_table = 127 malloc(sizeof(__collate_substitute_table))) == NULL) { 128 saverr = errno; 129 fclose(fp); 130 errno = saverr; 131 return (_LDP_ERROR); 132 } 133 if ((TMP_char_pri_table = 134 malloc(sizeof(__collate_char_pri_table))) == NULL) { 135 saverr = errno; 136 free(TMP_substitute_table); 137 fclose(fp); 138 errno = saverr; 139 return (_LDP_ERROR); 140 } 141 if ((TMP_chain_pri_table = 142 malloc(sizeof(*__collate_chain_pri_table) * chains)) == NULL) { 143 saverr = errno; 144 free(TMP_substitute_table); 145 free(TMP_char_pri_table); 146 fclose(fp); 147 errno = saverr; 148 return (_LDP_ERROR); 149 } 150 151 #define FREAD(a, b, c, d) \ 152 { \ 153 if ( fread(a, b, c, d) != c) { \ 154 saverr = errno; \ 155 free(TMP_substitute_table); \ 156 free(TMP_char_pri_table); \ 157 free(TMP_chain_pri_table); \ 158 fclose(d); \ 159 errno = saverr; \ 160 return (_LDP_ERROR); \ 161 } \ 162 } 163 164 FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp); 165 FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp); 166 FREAD(TMP_chain_pri_table, 167 sizeof(*__collate_chain_pri_table), chains, fp); 168 fclose(fp); 169 170 strcpy(collate_encoding, encoding); 171 if (__collate_substitute_table_ptr != NULL) 172 free(__collate_substitute_table_ptr); 173 __collate_substitute_table_ptr = TMP_substitute_table; 174 if (__collate_char_pri_table_ptr != NULL) 175 free(__collate_char_pri_table_ptr); 176 __collate_char_pri_table_ptr = TMP_char_pri_table; 177 if (__collate_chain_pri_table != NULL) 178 free(__collate_chain_pri_table); 179 __collate_chain_pri_table = TMP_chain_pri_table; 180 181 __collate_substitute_nontrivial = 0; 182 for (i = 0; i < UCHAR_MAX + 1; i++) { 183 if (__collate_substitute_table[i][0] != i || 184 __collate_substitute_table[i][1] != 0) { 185 __collate_substitute_nontrivial = 1; 186 break; 187 } 188 } 189 __collate_load_error = 0; 190 191 return (_LDP_LOADED); 192 } 193 194 u_char * 195 __collate_substitute(const u_char *s) 196 { 197 int dest_len, len, nlen; 198 int delta = strlen(s); 199 u_char *dest_str = NULL; 200 201 if (s == NULL || *s == '\0') 202 return (__collate_strdup("")); 203 delta += delta / 8; 204 dest_str = malloc(dest_len = delta); 205 if (dest_str == NULL) 206 __collate_err(EX_OSERR, __func__); 207 len = 0; 208 while (*s) { 209 nlen = len + strlen(__collate_substitute_table[*s]); 210 if (dest_len <= nlen) { 211 dest_str = reallocf(dest_str, dest_len = nlen + delta); 212 if (dest_str == NULL) 213 __collate_err(EX_OSERR, __func__); 214 } 215 strcpy(dest_str + len, __collate_substitute_table[*s++]); 216 len = nlen; 217 } 218 return (dest_str); 219 } 220 221 void 222 __collate_lookup(const u_char *t, int *len, int *prim, int *sec) 223 { 224 struct __collate_st_chain_pri *p2; 225 226 *len = 1; 227 *prim = *sec = 0; 228 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) { 229 if (*t == p2->str[0] && 230 strncmp(t, p2->str, strlen(p2->str)) == 0) { 231 *len = strlen(p2->str); 232 *prim = p2->prim; 233 *sec = p2->sec; 234 return; 235 } 236 } 237 *prim = __collate_char_pri_table[*t].prim; 238 *sec = __collate_char_pri_table[*t].sec; 239 } 240 241 u_char * 242 __collate_strdup(u_char *s) 243 { 244 u_char *t = strdup(s); 245 246 if (t == NULL) 247 __collate_err(EX_OSERR, __func__); 248 return (t); 249 } 250 251 void 252 __collate_err(int ex, const char *f) 253 { 254 const char *progname; 255 int serrno = errno; 256 257 progname = getprogname(); 258 _write(STDERR_FILENO, progname, strlen(progname)); 259 _write(STDERR_FILENO, ": ", 2); 260 _write(STDERR_FILENO, f, strlen(f)); 261 _write(STDERR_FILENO, ": ", 2); 262 f = strerror(serrno); 263 _write(STDERR_FILENO, f, strlen(f)); 264 _write(STDERR_FILENO, "\n", 1); 265 exit(ex); 266 } 267 268 #ifdef COLLATE_DEBUG 269 void 270 __collate_print_tables(void) 271 { 272 int i; 273 struct __collate_st_chain_pri *p2; 274 275 printf("Substitute table:\n"); 276 for (i = 0; i < UCHAR_MAX + 1; i++) 277 if (i != *__collate_substitute_table[i]) 278 printf("\t'%c' --> \"%s\"\n", i, 279 __collate_substitute_table[i]); 280 printf("Chain priority table:\n"); 281 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) 282 printf("\t\"%s\" : %d %d\n", p2->str, p2->prim, p2->sec); 283 printf("Char priority table:\n"); 284 for (i = 0; i < UCHAR_MAX + 1; i++) 285 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 286 __collate_char_pri_table[i].sec); 287 } 288 #endif 289