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 <rune.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 44 #include "libc_private.h" 45 46 int __collate_load_error = 1; 47 int __collate_substitute_nontrivial; 48 char __collate_version[STR_LEN]; 49 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 50 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 51 struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE]; 52 53 #define FREAD(a, b, c, d) \ 54 do { \ 55 if (fread(a, b, c, d) != c) { \ 56 fclose(d); \ 57 return -1; \ 58 } \ 59 } while(0) 60 61 void __collate_err(int ex, const char *f) __dead2; 62 63 int 64 __collate_load_tables(encoding) 65 char *encoding; 66 { 67 char buf[PATH_MAX]; 68 FILE *fp; 69 int i, save_load_error; 70 71 save_load_error = __collate_load_error; 72 __collate_load_error = 1; 73 if (!encoding) { 74 __collate_load_error = save_load_error; 75 return -1; 76 } 77 if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) 78 return 0; 79 if (!_PathLocale) { 80 __collate_load_error = save_load_error; 81 return -1; 82 } 83 /* Range checking not needed, encoding has fixed size */ 84 (void) strcpy(buf, _PathLocale); 85 (void) strcat(buf, "/"); 86 (void) strcat(buf, encoding); 87 (void) strcat(buf, "/LC_COLLATE"); 88 if ((fp = fopen(buf, "r")) == NULL) { 89 __collate_load_error = save_load_error; 90 return -1; 91 } 92 FREAD(__collate_version, sizeof(__collate_version), 1, fp); 93 if (strcmp(__collate_version, COLLATE_VERSION) != 0) { 94 fclose(fp); 95 return -1; 96 } 97 FREAD(__collate_substitute_table, sizeof(__collate_substitute_table), 98 1, fp); 99 FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1, 100 fp); 101 FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1, 102 fp); 103 fclose(fp); 104 __collate_load_error = 0; 105 106 __collate_substitute_nontrivial = 0; 107 for (i = 0; i < UCHAR_MAX + 1; i++) { 108 if (__collate_substitute_table[i][0] != i || 109 __collate_substitute_table[i][1] != 0) { 110 __collate_substitute_nontrivial = 1; 111 break; 112 } 113 } 114 115 return 0; 116 } 117 118 u_char * 119 __collate_substitute(s) 120 const u_char *s; 121 { 122 int dest_len, len, nlen; 123 int delta = strlen(s); 124 u_char *dest_str = NULL; 125 126 if(s == NULL || *s == '\0') 127 return __collate_strdup(""); 128 delta += delta / 8; 129 dest_str = malloc(dest_len = delta); 130 if(dest_str == NULL) 131 __collate_err(EX_OSERR, __FUNCTION__); 132 len = 0; 133 while(*s) { 134 nlen = len + strlen(__collate_substitute_table[*s]); 135 if (dest_len <= nlen) { 136 dest_str = reallocf(dest_str, dest_len = nlen + delta); 137 if(dest_str == NULL) 138 __collate_err(EX_OSERR, __FUNCTION__); 139 } 140 strcpy(dest_str + len, __collate_substitute_table[*s++]); 141 len = nlen; 142 } 143 return dest_str; 144 } 145 146 void 147 __collate_lookup(t, len, prim, sec) 148 const u_char *t; 149 int *len, *prim, *sec; 150 { 151 struct __collate_st_chain_pri *p2; 152 153 *len = 1; 154 *prim = *sec = 0; 155 for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) { 156 if(strncmp(t, p2->str, strlen(p2->str)) == 0) { 157 *len = strlen(p2->str); 158 *prim = p2->prim; 159 *sec = p2->sec; 160 return; 161 } 162 } 163 *prim = __collate_char_pri_table[*t].prim; 164 *sec = __collate_char_pri_table[*t].sec; 165 } 166 167 u_char * 168 __collate_strdup(s) 169 u_char *s; 170 { 171 u_char *t = strdup(s); 172 173 if (t == NULL) 174 __collate_err(EX_OSERR, __FUNCTION__); 175 return t; 176 } 177 178 void 179 __collate_err(int ex, const char *f) 180 { 181 const char *s; 182 int serrno = errno; 183 184 s = _getprogname(); 185 _write(STDERR_FILENO, s, strlen(s)); 186 _write(STDERR_FILENO, ": ", 2); 187 s = f; 188 _write(STDERR_FILENO, s, strlen(s)); 189 _write(STDERR_FILENO, ": ", 2); 190 s = strerror(serrno); 191 _write(STDERR_FILENO, s, strlen(s)); 192 _write(STDERR_FILENO, "\n", 1); 193 exit(ex); 194 } 195 196 #ifdef COLLATE_DEBUG 197 void 198 __collate_print_tables() 199 { 200 int i; 201 struct __collate_st_chain_pri *p2; 202 203 printf("Substitute table:\n"); 204 for (i = 0; i < UCHAR_MAX + 1; i++) 205 if (i != *__collate_substitute_table[i]) 206 printf("\t'%c' --> \"%s\"\n", i, 207 __collate_substitute_table[i]); 208 printf("Chain priority table:\n"); 209 for (p2 = __collate_chain_pri_table; p2->str[0]; p2++) 210 printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec); 211 printf("Char priority table:\n"); 212 for (i = 0; i < UCHAR_MAX + 1; i++) 213 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 214 __collate_char_pri_table[i].sec); 215 } 216 #endif 217