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 33 /* 34 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 35 * Use is subject to license terms. 36 */ 37 38 #include "lint.h" 39 #include "file64.h" 40 #include <errno.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 <netinet/in.h> 47 48 #include "runetype.h" 49 #include "runefile.h" 50 51 _RuneLocale *_Read_RuneMagi(FILE *); 52 53 _RuneLocale * 54 _Read_RuneMagi(FILE *fp) 55 { 56 char *fdata, *data; 57 void *lastp; 58 _FileRuneLocale *frl; 59 _RuneLocale *rl; 60 _FileRuneEntry *frr; 61 _RuneEntry *rr; 62 struct stat sb; 63 int x, saverr; 64 void *variable; 65 _FileRuneEntry *runetype_ext_ranges; 66 _FileRuneEntry *maplower_ext_ranges; 67 _FileRuneEntry *mapupper_ext_ranges; 68 int runetype_ext_len = 0; 69 70 if (fstat(fileno(fp), &sb) < 0) 71 return (NULL); 72 73 if ((size_t)sb.st_size < sizeof (_FileRuneLocale)) { 74 errno = EINVAL; 75 return (NULL); 76 } 77 78 if ((fdata = malloc(sb.st_size)) == NULL) 79 return (NULL); 80 81 errno = 0; 82 rewind(fp); /* Someone might have read the magic number once already */ 83 if (errno) { 84 saverr = errno; 85 free(fdata); 86 errno = saverr; 87 return (NULL); 88 } 89 90 if (fread(fdata, sb.st_size, 1, fp) != 1) { 91 saverr = errno; 92 free(fdata); 93 errno = saverr; 94 return (NULL); 95 } 96 97 frl = (_FileRuneLocale *)(void *)fdata; 98 lastp = fdata + sb.st_size; 99 100 variable = frl + 1; 101 102 if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof (frl->magic))) { 103 free(fdata); 104 errno = EINVAL; 105 return (NULL); 106 } 107 108 frl->variable_len = ntohl(frl->variable_len); 109 frl->runetype_ext_nranges = ntohl(frl->runetype_ext_nranges); 110 frl->maplower_ext_nranges = ntohl(frl->maplower_ext_nranges); 111 frl->mapupper_ext_nranges = ntohl(frl->mapupper_ext_nranges); 112 113 for (x = 0; x < _CACHED_RUNES; ++x) { 114 frl->runetype[x] = ntohl(frl->runetype[x]); 115 frl->maplower[x] = ntohl(frl->maplower[x]); 116 frl->mapupper[x] = ntohl(frl->mapupper[x]); 117 } 118 119 runetype_ext_ranges = (_FileRuneEntry *)variable; 120 variable = runetype_ext_ranges + frl->runetype_ext_nranges; 121 if (variable > lastp) { 122 free(fdata); 123 errno = EINVAL; 124 return (NULL); 125 } 126 127 maplower_ext_ranges = (_FileRuneEntry *)variable; 128 variable = maplower_ext_ranges + frl->maplower_ext_nranges; 129 if (variable > lastp) { 130 free(fdata); 131 errno = EINVAL; 132 return (NULL); 133 } 134 135 mapupper_ext_ranges = (_FileRuneEntry *)variable; 136 variable = mapupper_ext_ranges + frl->mapupper_ext_nranges; 137 if (variable > lastp) { 138 free(fdata); 139 errno = EINVAL; 140 return (NULL); 141 } 142 143 frr = runetype_ext_ranges; 144 for (x = 0; x < frl->runetype_ext_nranges; ++x) { 145 uint32_t *types; 146 147 frr[x].min = ntohl(frr[x].min); 148 frr[x].max = ntohl(frr[x].max); 149 frr[x].map = ntohl(frr[x].map); 150 if (frr[x].map == 0) { 151 int len = frr[x].max - frr[x].min + 1; 152 types = variable; 153 variable = types + len; 154 runetype_ext_len += len; 155 if (variable > lastp) { 156 free(fdata); 157 errno = EINVAL; 158 return (NULL); 159 } 160 while (len-- > 0) 161 types[len] = ntohl(types[len]); 162 } 163 } 164 165 frr = maplower_ext_ranges; 166 for (x = 0; x < frl->maplower_ext_nranges; ++x) { 167 frr[x].min = ntohl(frr[x].min); 168 frr[x].max = ntohl(frr[x].max); 169 frr[x].map = ntohl(frr[x].map); 170 } 171 172 frr = mapupper_ext_ranges; 173 for (x = 0; x < frl->mapupper_ext_nranges; ++x) { 174 frr[x].min = ntohl(frr[x].min); 175 frr[x].max = ntohl(frr[x].max); 176 frr[x].map = ntohl(frr[x].map); 177 } 178 if ((char *)variable + frl->variable_len > (char *)lastp) { 179 free(fdata); 180 errno = EINVAL; 181 return (NULL); 182 } 183 184 /* 185 * Convert from disk format to host format. 186 */ 187 data = malloc(sizeof (_RuneLocale) + 188 (frl->runetype_ext_nranges + frl->maplower_ext_nranges + 189 frl->mapupper_ext_nranges) * sizeof (_RuneEntry) + 190 runetype_ext_len * sizeof (*rr->__types) + 191 frl->variable_len); 192 if (data == NULL) { 193 saverr = errno; 194 free(fdata); 195 errno = saverr; 196 return (NULL); 197 } 198 199 rl = (_RuneLocale *)(void *)data; 200 rl->__variable = rl + 1; 201 202 (void) memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof (rl->__magic)); 203 (void) memcpy(rl->__encoding, frl->encoding, sizeof (rl->__encoding)); 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 (void) 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