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 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 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 #include "setlocale.h" 44 #include "ldpart.h" 45 46 #include "libc_private.h" 47 48 int __collate_load_error = 1; 49 int __collate_substitute_nontrivial; 50 51 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 52 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 53 struct __collate_st_chain_pri *__collate_chain_pri_table; 54 55 void __collate_err(int ex, const char *f) __dead2; 56 57 int 58 __collate_load_tables(const char *encoding) 59 { 60 FILE *fp; 61 int i, saverr, chains; 62 uint32_t u32; 63 char strbuf[STR_LEN], buf[PATH_MAX]; 64 void *TMP_substitute_table, *TMP_char_pri_table, *TMP_chain_pri_table; 65 static char collate_encoding[ENCODING_LEN + 1]; 66 67 /* 'encoding' must be already checked. */ 68 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 69 __collate_load_error = 1; 70 return (_LDP_CACHE); 71 } 72 73 /* 74 * If the locale name is the same as our cache, use the cache. 75 */ 76 if (strcmp(encoding, collate_encoding) == 0) { 77 __collate_load_error = 0; 78 return (_LDP_CACHE); 79 } 80 81 /* 82 * Slurp the locale file into the cache. 83 */ 84 85 /* 'PathLocale' must be already set & checked. */ 86 /* Range checking not needed, encoding has fixed size */ 87 (void)strcpy(buf, _PathLocale); 88 (void)strcat(buf, "/"); 89 (void)strcat(buf, encoding); 90 (void)strcat(buf, "/LC_COLLATE"); 91 if ((fp = fopen(buf, "r")) == NULL) 92 return (_LDP_ERROR); 93 94 if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) { 95 saverr = errno; 96 (void)fclose(fp); 97 errno = saverr; 98 return (_LDP_ERROR); 99 } 100 chains = -1; 101 if (strcmp(strbuf, COLLATE_VERSION) == 0) 102 chains = 0; 103 else if (strcmp(strbuf, COLLATE_VERSION1_1) == 0) 104 chains = 1; 105 if (chains < 0) { 106 (void)fclose(fp); 107 errno = EFTYPE; 108 return (_LDP_ERROR); 109 } 110 if (chains) { 111 if (fread(&u32, sizeof(u32), 1, fp) != 1) { 112 saverr = errno; 113 (void)fclose(fp); 114 errno = saverr; 115 return (_LDP_ERROR); 116 } 117 if ((chains = (int)ntohl(u32)) < 1) { 118 (void)fclose(fp); 119 errno = EFTYPE; 120 return (_LDP_ERROR); 121 } 122 } else 123 chains = TABLE_SIZE; 124 125 if ((TMP_substitute_table = 126 malloc(sizeof(__collate_substitute_table))) == NULL) { 127 saverr = errno; 128 (void)fclose(fp); 129 errno = saverr; 130 return (_LDP_ERROR); 131 } 132 if ((TMP_char_pri_table = 133 malloc(sizeof(__collate_char_pri_table))) == NULL) { 134 saverr = errno; 135 free(TMP_substitute_table); 136 (void)fclose(fp); 137 errno = saverr; 138 return (_LDP_ERROR); 139 } 140 if ((TMP_chain_pri_table = 141 malloc(sizeof(*__collate_chain_pri_table) * chains)) == NULL) { 142 saverr = errno; 143 free(TMP_substitute_table); 144 free(TMP_char_pri_table); 145 (void)fclose(fp); 146 errno = saverr; 147 return (_LDP_ERROR); 148 } 149 150 #define FREAD(a, b, c, d) \ 151 { \ 152 if (fread(a, b, c, d) != c) { \ 153 saverr = errno; \ 154 free(TMP_substitute_table); \ 155 free(TMP_char_pri_table); \ 156 free(TMP_chain_pri_table); \ 157 (void)fclose(d); \ 158 errno = saverr; \ 159 return (_LDP_ERROR); \ 160 } \ 161 } 162 163 FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp); 164 FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp); 165 FREAD(TMP_chain_pri_table, 166 sizeof(*__collate_chain_pri_table), chains, fp); 167 (void)fclose(fp); 168 169 (void)strcpy(collate_encoding, encoding); 170 if (__collate_substitute_table_ptr != NULL) 171 free(__collate_substitute_table_ptr); 172 __collate_substitute_table_ptr = TMP_substitute_table; 173 if (__collate_char_pri_table_ptr != NULL) 174 free(__collate_char_pri_table_ptr); 175 __collate_char_pri_table_ptr = TMP_char_pri_table; 176 if (__collate_chain_pri_table != NULL) 177 free(__collate_chain_pri_table); 178 __collate_chain_pri_table = TMP_chain_pri_table; 179 180 __collate_substitute_nontrivial = 0; 181 for (i = 0; i < UCHAR_MAX + 1; i++) { 182 if (__collate_substitute_table[i][0] != i || 183 __collate_substitute_table[i][1] != 0) { 184 __collate_substitute_nontrivial = 1; 185 break; 186 } 187 } 188 __collate_load_error = 0; 189 190 return (_LDP_LOADED); 191 } 192 193 u_char * 194 __collate_substitute(s) 195 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, __FUNCTION__); 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, __FUNCTION__); 214 } 215 (void)strcpy(dest_str + len, __collate_substitute_table[*s++]); 216 len = nlen; 217 } 218 return (dest_str); 219 } 220 221 void 222 __collate_lookup(t, len, prim, sec) 223 const u_char *t; 224 int *len, *prim, *sec; 225 { 226 struct __collate_st_chain_pri *p2; 227 228 *len = 1; 229 *prim = *sec = 0; 230 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) { 231 if (*t == p2->str[0] && 232 strncmp(t, p2->str, strlen(p2->str)) == 0) { 233 *len = strlen(p2->str); 234 *prim = p2->prim; 235 *sec = p2->sec; 236 return; 237 } 238 } 239 *prim = __collate_char_pri_table[*t].prim; 240 *sec = __collate_char_pri_table[*t].sec; 241 } 242 243 u_char * 244 __collate_strdup(s) 245 u_char *s; 246 { 247 u_char *t = strdup(s); 248 249 if (t == NULL) 250 __collate_err(EX_OSERR, __FUNCTION__); 251 return (t); 252 } 253 254 void 255 __collate_err(int ex, const char *f) 256 { 257 const char *s; 258 int serrno = errno; 259 260 s = _getprogname(); 261 _write(STDERR_FILENO, s, strlen(s)); 262 _write(STDERR_FILENO, ": ", 2); 263 s = f; 264 _write(STDERR_FILENO, s, strlen(s)); 265 _write(STDERR_FILENO, ": ", 2); 266 s = strerror(serrno); 267 _write(STDERR_FILENO, s, strlen(s)); 268 _write(STDERR_FILENO, "\n", 1); 269 exit(ex); 270 } 271 272 #ifdef COLLATE_DEBUG 273 void 274 __collate_print_tables() 275 { 276 int i; 277 struct __collate_st_chain_pri *p2; 278 279 printf("Substitute table:\n"); 280 for (i = 0; i < UCHAR_MAX + 1; i++) 281 if (i != *__collate_substitute_table[i]) 282 printf("\t'%c' --> \"%s\"\n", i, 283 __collate_substitute_table[i]); 284 printf("Chain priority table:\n"); 285 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) 286 printf("\t\"%s\" : %d %d\n", p2->str, p2->prim, p2->sec); 287 printf("Char priority table:\n"); 288 for (i = 0; i < UCHAR_MAX + 1; i++) 289 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 290 __collate_char_pri_table[i].sec); 291 } 292 #endif 293