1 /* 2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Paul Borman at Krystal Technologies. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "lint.h" 35 #include "file64.h" 36 #include <errno.h> 37 #include <stdio.h> 38 #include <string.h> 39 #include <stdlib.h> 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 43 #include "runetype.h" 44 #include "runefile.h" 45 46 _RuneLocale *_Read_RuneMagi(FILE *); 47 48 _RuneLocale * 49 _Read_RuneMagi(FILE *fp) 50 { 51 char *fdata, *data; 52 void *lastp; 53 _FileRuneLocale *frl; 54 _RuneLocale *rl; 55 _FileRuneEntry *frr; 56 _RuneEntry *rr; 57 struct stat sb; 58 int x, saverr; 59 void *variable; 60 _FileRuneEntry *runetype_ext_ranges; 61 _FileRuneEntry *maplower_ext_ranges; 62 _FileRuneEntry *mapupper_ext_ranges; 63 int runetype_ext_len = 0; 64 65 if (fstat(fileno(fp), &sb) < 0) 66 return (NULL); 67 68 if ((size_t)sb.st_size < sizeof (_FileRuneLocale)) { 69 errno = EINVAL; 70 return (NULL); 71 } 72 73 if ((fdata = malloc(sb.st_size)) == NULL) 74 return (NULL); 75 76 errno = 0; 77 rewind(fp); /* Someone might have read the magic number once already */ 78 if (errno) { 79 saverr = errno; 80 free(fdata); 81 errno = saverr; 82 return (NULL); 83 } 84 85 if (fread(fdata, sb.st_size, 1, fp) != 1) { 86 saverr = errno; 87 free(fdata); 88 errno = saverr; 89 return (NULL); 90 } 91 92 frl = (_FileRuneLocale *)(void *)fdata; 93 lastp = fdata + sb.st_size; 94 95 variable = frl + 1; 96 97 if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof (frl->magic))) { 98 free(fdata); 99 errno = EINVAL; 100 return (NULL); 101 } 102 103 runetype_ext_ranges = (_FileRuneEntry *)variable; 104 variable = runetype_ext_ranges + frl->runetype_ext_nranges; 105 if (variable > lastp) { 106 free(fdata); 107 errno = EINVAL; 108 return (NULL); 109 } 110 111 maplower_ext_ranges = (_FileRuneEntry *)variable; 112 variable = maplower_ext_ranges + frl->maplower_ext_nranges; 113 if (variable > lastp) { 114 free(fdata); 115 errno = EINVAL; 116 return (NULL); 117 } 118 119 mapupper_ext_ranges = (_FileRuneEntry *)variable; 120 variable = mapupper_ext_ranges + frl->mapupper_ext_nranges; 121 if (variable > lastp) { 122 free(fdata); 123 errno = EINVAL; 124 return (NULL); 125 } 126 127 frr = runetype_ext_ranges; 128 for (x = 0; x < frl->runetype_ext_nranges; ++x) { 129 uint32_t *types; 130 131 if (frr[x].map == 0) { 132 int len = frr[x].max - frr[x].min + 1; 133 types = variable; 134 variable = types + len; 135 runetype_ext_len += len; 136 if (variable > lastp) { 137 free(fdata); 138 errno = EINVAL; 139 return (NULL); 140 } 141 } 142 } 143 144 if ((char *)variable + frl->variable_len > (char *)lastp) { 145 free(fdata); 146 errno = EINVAL; 147 return (NULL); 148 } 149 150 /* 151 * Convert from disk format to host format. 152 */ 153 data = malloc(sizeof (_RuneLocale) + 154 (frl->runetype_ext_nranges + frl->maplower_ext_nranges + 155 frl->mapupper_ext_nranges) * sizeof (_RuneEntry) + 156 runetype_ext_len * sizeof (*rr->__types) + 157 frl->variable_len); 158 if (data == NULL) { 159 saverr = errno; 160 free(fdata); 161 errno = saverr; 162 return (NULL); 163 } 164 165 rl = (_RuneLocale *)(void *)data; 166 rl->__variable = rl + 1; 167 168 (void) memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof (rl->__magic)); 169 (void) memcpy(rl->__encoding, frl->encoding, sizeof (rl->__encoding)); 170 171 rl->__variable_len = frl->variable_len; 172 rl->__runetype_ext.__nranges = frl->runetype_ext_nranges; 173 rl->__maplower_ext.__nranges = frl->maplower_ext_nranges; 174 rl->__mapupper_ext.__nranges = frl->mapupper_ext_nranges; 175 176 for (x = 0; x < _CACHED_RUNES; ++x) { 177 rl->__runetype[x] = frl->runetype[x]; 178 rl->__maplower[x] = frl->maplower[x]; 179 rl->__mapupper[x] = frl->mapupper[x]; 180 } 181 182 rl->__runetype_ext.__ranges = (_RuneEntry *)rl->__variable; 183 rl->__variable = rl->__runetype_ext.__ranges + 184 rl->__runetype_ext.__nranges; 185 186 rl->__maplower_ext.__ranges = (_RuneEntry *)rl->__variable; 187 rl->__variable = rl->__maplower_ext.__ranges + 188 rl->__maplower_ext.__nranges; 189 190 rl->__mapupper_ext.__ranges = (_RuneEntry *)rl->__variable; 191 rl->__variable = rl->__mapupper_ext.__ranges + 192 rl->__mapupper_ext.__nranges; 193 194 variable = mapupper_ext_ranges + frl->mapupper_ext_nranges; 195 frr = runetype_ext_ranges; 196 rr = rl->__runetype_ext.__ranges; 197 for (x = 0; x < rl->__runetype_ext.__nranges; ++x) { 198 uint32_t *types; 199 200 rr[x].__min = frr[x].min; 201 rr[x].__max = frr[x].max; 202 rr[x].__map = frr[x].map; 203 if (rr[x].__map == 0) { 204 int len = rr[x].__max - rr[x].__min + 1; 205 types = variable; 206 variable = types + len; 207 rr[x].__types = rl->__variable; 208 rl->__variable = rr[x].__types + len; 209 while (len-- > 0) 210 rr[x].__types[len] = types[len]; 211 } else 212 rr[x].__types = NULL; 213 } 214 215 frr = maplower_ext_ranges; 216 rr = rl->__maplower_ext.__ranges; 217 for (x = 0; x < rl->__maplower_ext.__nranges; ++x) { 218 rr[x].__min = frr[x].min; 219 rr[x].__max = frr[x].max; 220 rr[x].__map = frr[x].map; 221 } 222 223 frr = mapupper_ext_ranges; 224 rr = rl->__mapupper_ext.__ranges; 225 for (x = 0; x < rl->__mapupper_ext.__nranges; ++x) { 226 rr[x].__min = frr[x].min; 227 rr[x].__max = frr[x].max; 228 rr[x].__map = frr[x].map; 229 } 230 231 (void) memcpy(rl->__variable, variable, rl->__variable_len); 232 free(fdata); 233 234 /* 235 * Go out and zero pointers that should be zero. 236 */ 237 if (!rl->__variable_len) 238 rl->__variable = NULL; 239 240 if (!rl->__runetype_ext.__nranges) 241 rl->__runetype_ext.__ranges = NULL; 242 243 if (!rl->__maplower_ext.__nranges) 244 rl->__maplower_ext.__ranges = NULL; 245 246 if (!rl->__mapupper_ext.__nranges) 247 rl->__mapupper_ext.__ranges = NULL; 248 249 return (rl); 250 } 251