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 <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <errno.h> 37 #include <unistd.h> 38 #include <sysexits.h> 39 #include "un-namespace.h" 40 41 #include "collate.h" 42 #include "setlocale.h" 43 #include "ldpart.h" 44 45 #include "libc_private.h" 46 47 int __collate_load_error = 1; 48 int __collate_substitute_nontrivial; 49 50 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 51 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 52 struct __collate_st_chain_pri *__collate_chain_pri_table; 53 54 void __collate_err(int ex, const char *f) __dead2; 55 56 int 57 __collate_load_tables(const char *encoding) 58 { 59 FILE *fp; 60 int i, saverr, chains; 61 uint32_t u32; 62 char strbuf[STR_LEN], buf[PATH_MAX]; 63 void *TMP_substitute_table, *TMP_char_pri_table, *TMP_chain_pri_table; 64 static char collate_encoding[ENCODING_LEN + 1]; 65 66 /* 'encoding' must be already checked. */ 67 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 68 __collate_load_error = 1; 69 return (_LDP_CACHE); 70 } 71 72 /* 73 * If the locale name is the same as our cache, use the cache. 74 */ 75 if (strcmp(encoding, collate_encoding) == 0) { 76 __collate_load_error = 0; 77 return (_LDP_CACHE); 78 } 79 80 /* 81 * Slurp the locale file into the cache. 82 */ 83 84 /* 'PathLocale' must be already set & checked. */ 85 /* Range checking not needed, encoding has fixed size */ 86 (void)strcpy(buf, _PathLocale); 87 (void)strcat(buf, "/"); 88 (void)strcat(buf, encoding); 89 (void)strcat(buf, "/LC_COLLATE"); 90 if ((fp = fopen(buf, "r")) == NULL) 91 return (_LDP_ERROR); 92 93 if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) { 94 saverr = errno; 95 (void)fclose(fp); 96 errno = saverr; 97 return (_LDP_ERROR); 98 } 99 chains = -1; 100 if (strcmp(strbuf, COLLATE_VERSION) == 0) 101 chains = 0; 102 else if (strcmp(strbuf, COLLATE_VERSION1_2) == 0) 103 chains = 1; 104 if (chains < 0) { 105 (void)fclose(fp); 106 errno = EFTYPE; 107 return (_LDP_ERROR); 108 } 109 if (chains) { 110 if (fread(&u32, sizeof(u32), 1, fp) != 1) { 111 saverr = errno; 112 (void)fclose(fp); 113 errno = saverr; 114 return (_LDP_ERROR); 115 } 116 if ((chains = (int)ntohl(u32)) < 1) { 117 (void)fclose(fp); 118 errno = EFTYPE; 119 return (_LDP_ERROR); 120 } 121 } else 122 chains = TABLE_SIZE; 123 124 if ((TMP_substitute_table = 125 malloc(sizeof(__collate_substitute_table))) == NULL) { 126 saverr = errno; 127 (void)fclose(fp); 128 errno = saverr; 129 return (_LDP_ERROR); 130 } 131 if ((TMP_char_pri_table = 132 malloc(sizeof(__collate_char_pri_table))) == NULL) { 133 saverr = errno; 134 free(TMP_substitute_table); 135 (void)fclose(fp); 136 errno = saverr; 137 return (_LDP_ERROR); 138 } 139 if ((TMP_chain_pri_table = 140 malloc(sizeof(*__collate_chain_pri_table) * chains)) == NULL) { 141 saverr = errno; 142 free(TMP_substitute_table); 143 free(TMP_char_pri_table); 144 (void)fclose(fp); 145 errno = saverr; 146 return (_LDP_ERROR); 147 } 148 149 #define FREAD(a, b, c, d) \ 150 { \ 151 if (fread(a, b, c, d) != c) { \ 152 saverr = errno; \ 153 free(TMP_substitute_table); \ 154 free(TMP_char_pri_table); \ 155 free(TMP_chain_pri_table); \ 156 (void)fclose(d); \ 157 errno = saverr; \ 158 return (_LDP_ERROR); \ 159 } \ 160 } 161 162 FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp); 163 FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp); 164 FREAD(TMP_chain_pri_table, 165 sizeof(*__collate_chain_pri_table), chains, fp); 166 (void)fclose(fp); 167 168 (void)strcpy(collate_encoding, encoding); 169 if (__collate_substitute_table_ptr != NULL) 170 free(__collate_substitute_table_ptr); 171 __collate_substitute_table_ptr = TMP_substitute_table; 172 if (__collate_char_pri_table_ptr != NULL) 173 free(__collate_char_pri_table_ptr); 174 __collate_char_pri_table_ptr = TMP_char_pri_table; 175 for (i = 0; i < UCHAR_MAX + 1; i++) { 176 __collate_char_pri_table[i].prim = 177 ntohl(__collate_char_pri_table[i].prim); 178 __collate_char_pri_table[i].sec = 179 ntohl(__collate_char_pri_table[i].sec); 180 } 181 if (__collate_chain_pri_table != NULL) 182 free(__collate_chain_pri_table); 183 __collate_chain_pri_table = TMP_chain_pri_table; 184 for (i = 0; i < chains; i++) { 185 __collate_chain_pri_table[i].prim = 186 ntohl(__collate_chain_pri_table[i].prim); 187 __collate_chain_pri_table[i].sec = 188 ntohl(__collate_chain_pri_table[i].sec); 189 } 190 __collate_substitute_nontrivial = 0; 191 for (i = 0; i < UCHAR_MAX + 1; i++) { 192 if (__collate_substitute_table[i][0] != i || 193 __collate_substitute_table[i][1] != 0) { 194 __collate_substitute_nontrivial = 1; 195 break; 196 } 197 } 198 __collate_load_error = 0; 199 200 return (_LDP_LOADED); 201 } 202 203 u_char * 204 __collate_substitute(const u_char *s) 205 { 206 int dest_len, len, nlen; 207 int delta = strlen(s); 208 u_char *dest_str = NULL; 209 210 if (s == NULL || *s == '\0') 211 return (__collate_strdup("")); 212 delta += delta / 8; 213 dest_str = malloc(dest_len = delta); 214 if (dest_str == NULL) 215 __collate_err(EX_OSERR, __func__); 216 len = 0; 217 while (*s) { 218 nlen = len + strlen(__collate_substitute_table[*s]); 219 if (dest_len <= nlen) { 220 dest_str = reallocf(dest_str, dest_len = nlen + delta); 221 if (dest_str == NULL) 222 __collate_err(EX_OSERR, __func__); 223 } 224 (void)strcpy(dest_str + len, __collate_substitute_table[*s++]); 225 len = nlen; 226 } 227 return (dest_str); 228 } 229 230 void 231 __collate_lookup(const u_char *t, int *len, int *prim, int *sec) 232 { 233 struct __collate_st_chain_pri *p2; 234 235 *len = 1; 236 *prim = *sec = 0; 237 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) { 238 if (*t == p2->str[0] && 239 strncmp(t, p2->str, strlen(p2->str)) == 0) { 240 *len = strlen(p2->str); 241 *prim = p2->prim; 242 *sec = p2->sec; 243 return; 244 } 245 } 246 *prim = __collate_char_pri_table[*t].prim; 247 *sec = __collate_char_pri_table[*t].sec; 248 } 249 250 u_char * 251 __collate_strdup(u_char *s) 252 { 253 u_char *t = strdup(s); 254 255 if (t == NULL) 256 __collate_err(EX_OSERR, __func__); 257 return (t); 258 } 259 260 void 261 __collate_err(int ex, const char *f) 262 { 263 const char *s; 264 int serrno = errno; 265 266 s = _getprogname(); 267 _write(STDERR_FILENO, s, strlen(s)); 268 _write(STDERR_FILENO, ": ", 2); 269 s = f; 270 _write(STDERR_FILENO, s, strlen(s)); 271 _write(STDERR_FILENO, ": ", 2); 272 s = strerror(serrno); 273 _write(STDERR_FILENO, s, strlen(s)); 274 _write(STDERR_FILENO, "\n", 1); 275 exit(ex); 276 } 277 278 #ifdef COLLATE_DEBUG 279 void 280 __collate_print_tables() 281 { 282 int i; 283 struct __collate_st_chain_pri *p2; 284 285 printf("Substitute table:\n"); 286 for (i = 0; i < UCHAR_MAX + 1; i++) 287 if (i != *__collate_substitute_table[i]) 288 printf("\t'%c' --> \"%s\"\n", i, 289 __collate_substitute_table[i]); 290 printf("Chain priority table:\n"); 291 for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) 292 printf("\t\"%s\" : %d %d\n", p2->str, p2->prim, p2->sec); 293 printf("Char priority table:\n"); 294 for (i = 0; i < UCHAR_MAX + 1; i++) 295 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 296 __collate_char_pri_table[i].sec); 297 } 298 #endif 299