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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #if defined(LIBC_SCCS) && !defined(lint) 38 static char sccsid[] = "@(#)rune.c 8.1 (Berkeley) 6/4/93"; 39 #endif /* LIBC_SCCS and not lint */ 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include "namespace.h" 44 #include <arpa/inet.h> 45 #include <errno.h> 46 #include <rune.h> 47 #include <stdio.h> 48 #include <string.h> 49 #include <stdlib.h> 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 #include "un-namespace.h" 53 54 _RuneLocale * 55 _Read_RuneMagi(fp) 56 FILE *fp; 57 { 58 char *data; 59 void *lastp; 60 _RuneLocale *rl; 61 _RuneEntry *rr; 62 struct stat sb; 63 int x, saverr; 64 65 if (_fstat(fileno(fp), &sb) < 0) 66 return (NULL); 67 68 if (sb.st_size < sizeof(_RuneLocale)) { 69 errno = EFTYPE; 70 return (NULL); 71 } 72 73 if ((data = 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(data); 81 errno = saverr; 82 return (NULL); 83 } 84 85 if (fread(data, sb.st_size, 1, fp) != 1) { 86 saverr = errno; 87 free(data); 88 errno = saverr; 89 return (NULL); 90 } 91 92 rl = (_RuneLocale *)data; 93 lastp = data + sb.st_size; 94 95 rl->variable = rl + 1; 96 97 if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) { 98 free(data); 99 errno = EFTYPE; 100 return (NULL); 101 } 102 103 rl->invalid_rune = ntohl(rl->invalid_rune); 104 rl->variable_len = ntohl(rl->variable_len); 105 rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges); 106 rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges); 107 rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges); 108 109 for (x = 0; x < _CACHED_RUNES; ++x) { 110 rl->runetype[x] = ntohl(rl->runetype[x]); 111 rl->maplower[x] = ntohl(rl->maplower[x]); 112 rl->mapupper[x] = ntohl(rl->mapupper[x]); 113 } 114 115 rl->runetype_ext.ranges = (_RuneEntry *)rl->variable; 116 rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges; 117 if (rl->variable > lastp) { 118 free(data); 119 errno = EFTYPE; 120 return (NULL); 121 } 122 123 rl->maplower_ext.ranges = (_RuneEntry *)rl->variable; 124 rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges; 125 if (rl->variable > lastp) { 126 free(data); 127 errno = EFTYPE; 128 return (NULL); 129 } 130 131 rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable; 132 rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges; 133 if (rl->variable > lastp) { 134 free(data); 135 errno = EFTYPE; 136 return (NULL); 137 } 138 139 for (x = 0; x < rl->runetype_ext.nranges; ++x) { 140 rr = rl->runetype_ext.ranges; 141 142 rr[x].min = ntohl(rr[x].min); 143 rr[x].max = ntohl(rr[x].max); 144 if ((rr[x].map = ntohl(rr[x].map)) == 0) { 145 int len = rr[x].max - rr[x].min + 1; 146 rr[x].types = rl->variable; 147 rl->variable = rr[x].types + len; 148 if (rl->variable > lastp) { 149 free(data); 150 errno = EFTYPE; 151 return (NULL); 152 } 153 while (len-- > 0) 154 rr[x].types[len] = ntohl(rr[x].types[len]); 155 } else 156 rr[x].types = 0; 157 } 158 159 for (x = 0; x < rl->maplower_ext.nranges; ++x) { 160 rr = rl->maplower_ext.ranges; 161 162 rr[x].min = ntohl(rr[x].min); 163 rr[x].max = ntohl(rr[x].max); 164 rr[x].map = ntohl(rr[x].map); 165 } 166 167 for (x = 0; x < rl->mapupper_ext.nranges; ++x) { 168 rr = rl->mapupper_ext.ranges; 169 170 rr[x].min = ntohl(rr[x].min); 171 rr[x].max = ntohl(rr[x].max); 172 rr[x].map = ntohl(rr[x].map); 173 } 174 if (((char *)rl->variable) + rl->variable_len > (char *)lastp) { 175 free(data); 176 errno = EFTYPE; 177 return (NULL); 178 } 179 180 /* 181 * Go out and zero pointers that should be zero. 182 */ 183 if (!rl->variable_len) 184 rl->variable = 0; 185 186 if (!rl->runetype_ext.nranges) 187 rl->runetype_ext.ranges = 0; 188 189 if (!rl->maplower_ext.nranges) 190 rl->maplower_ext.ranges = 0; 191 192 if (!rl->mapupper_ext.nranges) 193 rl->mapupper_ext.ranges = 0; 194 195 return (rl); 196 } 197