1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Paul Borman at Krystal Technologies. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)rune.c 8.1 (Berkeley) 6/4/93 33 * $FreeBSD: head/lib/libc/locale/rune.c 165903 2007-01-09 00:28:16Z imp $ 34 */ 35 36 37 #include "namespace.h" 38 #include <arpa/inet.h> 39 #include <errno.h> 40 #include <runetype.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <stdlib.h> 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include "un-namespace.h" 47 48 #include "runefile.h" 49 50 _RuneLocale *_Read_RuneMagi(FILE *); 51 52 _RuneLocale * 53 _Read_RuneMagi(FILE *fp) 54 { 55 char *fdata, *data; 56 void *lastp; 57 _FileRuneLocale *frl; 58 _RuneLocale *rl; 59 _FileRuneEntry *frr; 60 _RuneEntry *rr; 61 struct stat sb; 62 int x, saverr; 63 void *variable; 64 _FileRuneEntry *runetype_ext_ranges; 65 _FileRuneEntry *maplower_ext_ranges; 66 _FileRuneEntry *mapupper_ext_ranges; 67 int runetype_ext_len = 0; 68 69 if (_fstat(fileno(fp), &sb) < 0) 70 return (NULL); 71 72 if ((size_t)sb.st_size < sizeof(_FileRuneLocale)) { 73 errno = EFTYPE; 74 return (NULL); 75 } 76 77 if ((fdata = malloc(sb.st_size)) == NULL) 78 return (NULL); 79 80 errno = 0; 81 rewind(fp); /* Someone might have read the magic number once already */ 82 if (errno) { 83 saverr = errno; 84 free(fdata); 85 errno = saverr; 86 return (NULL); 87 } 88 89 if (fread(fdata, sb.st_size, 1, fp) != 1) { 90 saverr = errno; 91 free(fdata); 92 errno = saverr; 93 return (NULL); 94 } 95 96 frl = (_FileRuneLocale *)fdata; 97 lastp = fdata + sb.st_size; 98 99 variable = frl + 1; 100 101 if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof(frl->magic))) { 102 free(fdata); 103 errno = EFTYPE; 104 return (NULL); 105 } 106 107 frl->variable_len = ntohl(frl->variable_len); 108 frl->runetype_ext_nranges = ntohl(frl->runetype_ext_nranges); 109 frl->maplower_ext_nranges = ntohl(frl->maplower_ext_nranges); 110 frl->mapupper_ext_nranges = ntohl(frl->mapupper_ext_nranges); 111 112 for (x = 0; x < _CACHED_RUNES; ++x) { 113 frl->runetype[x] = ntohl(frl->runetype[x]); 114 frl->maplower[x] = ntohl(frl->maplower[x]); 115 frl->mapupper[x] = ntohl(frl->mapupper[x]); 116 } 117 118 runetype_ext_ranges = (_FileRuneEntry *)variable; 119 variable = runetype_ext_ranges + frl->runetype_ext_nranges; 120 if (variable > lastp) { 121 free(fdata); 122 errno = EFTYPE; 123 return (NULL); 124 } 125 126 maplower_ext_ranges = (_FileRuneEntry *)variable; 127 variable = maplower_ext_ranges + frl->maplower_ext_nranges; 128 if (variable > lastp) { 129 free(fdata); 130 errno = EFTYPE; 131 return (NULL); 132 } 133 134 mapupper_ext_ranges = (_FileRuneEntry *)variable; 135 variable = mapupper_ext_ranges + frl->mapupper_ext_nranges; 136 if (variable > lastp) { 137 free(fdata); 138 errno = EFTYPE; 139 return (NULL); 140 } 141 142 frr = runetype_ext_ranges; 143 for (x = 0; x < frl->runetype_ext_nranges; ++x) { 144 uint32_t *types; 145 146 frr[x].min = ntohl(frr[x].min); 147 frr[x].max = ntohl(frr[x].max); 148 frr[x].map = ntohl(frr[x].map); 149 if (frr[x].map == 0) { 150 int len = frr[x].max - frr[x].min + 1; 151 types = variable; 152 variable = types + len; 153 runetype_ext_len += len; 154 if (variable > lastp) { 155 free(fdata); 156 errno = EFTYPE; 157 return (NULL); 158 } 159 while (len-- > 0) 160 types[len] = ntohl(types[len]); 161 } 162 } 163 164 frr = maplower_ext_ranges; 165 for (x = 0; x < frl->maplower_ext_nranges; ++x) { 166 frr[x].min = ntohl(frr[x].min); 167 frr[x].max = ntohl(frr[x].max); 168 frr[x].map = ntohl(frr[x].map); 169 } 170 171 frr = mapupper_ext_ranges; 172 for (x = 0; x < frl->mapupper_ext_nranges; ++x) { 173 frr[x].min = ntohl(frr[x].min); 174 frr[x].max = ntohl(frr[x].max); 175 frr[x].map = ntohl(frr[x].map); 176 } 177 if ((char *)variable + frl->variable_len > (char *)lastp) { 178 free(fdata); 179 errno = EFTYPE; 180 return (NULL); 181 } 182 183 /* 184 * Convert from disk format to host format. 185 */ 186 data = malloc(sizeof(_RuneLocale) + 187 (frl->runetype_ext_nranges + frl->maplower_ext_nranges + 188 frl->mapupper_ext_nranges) * sizeof(_RuneEntry) + 189 runetype_ext_len * sizeof(*rr->__types) + 190 frl->variable_len); 191 if (data == NULL) { 192 saverr = errno; 193 free(fdata); 194 errno = saverr; 195 return (NULL); 196 } 197 198 rl = (_RuneLocale *)data; 199 rl->__variable = rl + 1; 200 201 memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof(rl->__magic)); 202 memcpy(rl->__encoding, frl->encoding, sizeof(rl->__encoding)); 203 rl->__invalid_rune = 0; 204 205 rl->__variable_len = frl->variable_len; 206 rl->__runetype_ext.__nranges = frl->runetype_ext_nranges; 207 rl->__maplower_ext.__nranges = frl->maplower_ext_nranges; 208 rl->__mapupper_ext.__nranges = frl->mapupper_ext_nranges; 209 210 for (x = 0; x < _CACHED_RUNES; ++x) { 211 rl->__runetype[x] = frl->runetype[x]; 212 rl->__maplower[x] = frl->maplower[x]; 213 rl->__mapupper[x] = frl->mapupper[x]; 214 } 215 216 rl->__runetype_ext.__ranges = (_RuneEntry *)rl->__variable; 217 rl->__variable = rl->__runetype_ext.__ranges + 218 rl->__runetype_ext.__nranges; 219 220 rl->__maplower_ext.__ranges = (_RuneEntry *)rl->__variable; 221 rl->__variable = rl->__maplower_ext.__ranges + 222 rl->__maplower_ext.__nranges; 223 224 rl->__mapupper_ext.__ranges = (_RuneEntry *)rl->__variable; 225 rl->__variable = rl->__mapupper_ext.__ranges + 226 rl->__mapupper_ext.__nranges; 227 228 variable = mapupper_ext_ranges + frl->mapupper_ext_nranges; 229 frr = runetype_ext_ranges; 230 rr = rl->__runetype_ext.__ranges; 231 for (x = 0; x < rl->__runetype_ext.__nranges; ++x) { 232 uint32_t *types; 233 234 rr[x].__min = frr[x].min; 235 rr[x].__max = frr[x].max; 236 rr[x].__map = frr[x].map; 237 if (rr[x].__map == 0) { 238 int len = rr[x].__max - rr[x].__min + 1; 239 types = variable; 240 variable = types + len; 241 rr[x].__types = rl->__variable; 242 rl->__variable = rr[x].__types + len; 243 while (len-- > 0) 244 rr[x].__types[len] = types[len]; 245 } else 246 rr[x].__types = NULL; 247 } 248 249 frr = maplower_ext_ranges; 250 rr = rl->__maplower_ext.__ranges; 251 for (x = 0; x < rl->__maplower_ext.__nranges; ++x) { 252 rr[x].__min = frr[x].min; 253 rr[x].__max = frr[x].max; 254 rr[x].__map = frr[x].map; 255 } 256 257 frr = mapupper_ext_ranges; 258 rr = rl->__mapupper_ext.__ranges; 259 for (x = 0; x < rl->__mapupper_ext.__nranges; ++x) { 260 rr[x].__min = frr[x].min; 261 rr[x].__max = frr[x].max; 262 rr[x].__map = frr[x].map; 263 } 264 265 memcpy(rl->__variable, variable, rl->__variable_len); 266 free(fdata); 267 268 /* 269 * Go out and zero pointers that should be zero. 270 */ 271 if (!rl->__variable_len) 272 rl->__variable = NULL; 273 274 if (!rl->__runetype_ext.__nranges) 275 rl->__runetype_ext.__ranges = NULL; 276 277 if (!rl->__maplower_ext.__nranges) 278 rl->__maplower_ext.__ranges = NULL; 279 280 if (!rl->__mapupper_ext.__nranges) 281 rl->__mapupper_ext.__ranges = NULL; 282 283 return (rl); 284 } 285