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 <rune.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include <stdlib.h> 49 #include <sys/types.h> 50 #include <sys/stat.h> 51 #include "un-namespace.h" 52 53 _RuneLocale * 54 _Read_RuneMagi(fp) 55 FILE *fp; 56 { 57 char *data; 58 void *lastp; 59 _RuneLocale *rl; 60 _RuneEntry *rr; 61 struct stat sb; 62 int x; 63 64 if (_fstat(fileno(fp), &sb) < 0) 65 return(0); 66 67 if (sb.st_size < sizeof(_RuneLocale)) 68 return(0); 69 70 if ((data = malloc(sb.st_size)) == NULL) 71 return(0); 72 73 rewind(fp); /* Someone might have read the magic number once already */ 74 75 if (fread(data, sb.st_size, 1, fp) != 1) { 76 free(data); 77 return(0); 78 } 79 80 rl = (_RuneLocale *)data; 81 lastp = data + sb.st_size; 82 83 rl->variable = rl + 1; 84 85 if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) { 86 free(data); 87 return(0); 88 } 89 90 rl->invalid_rune = ntohl(rl->invalid_rune); 91 rl->variable_len = ntohl(rl->variable_len); 92 rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges); 93 rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges); 94 rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges); 95 96 for (x = 0; x < _CACHED_RUNES; ++x) { 97 rl->runetype[x] = ntohl(rl->runetype[x]); 98 rl->maplower[x] = ntohl(rl->maplower[x]); 99 rl->mapupper[x] = ntohl(rl->mapupper[x]); 100 } 101 102 rl->runetype_ext.ranges = (_RuneEntry *)rl->variable; 103 rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges; 104 if (rl->variable > lastp) { 105 free(data); 106 return(0); 107 } 108 109 rl->maplower_ext.ranges = (_RuneEntry *)rl->variable; 110 rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges; 111 if (rl->variable > lastp) { 112 free(data); 113 return(0); 114 } 115 116 rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable; 117 rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges; 118 if (rl->variable > lastp) { 119 free(data); 120 return(0); 121 } 122 123 for (x = 0; x < rl->runetype_ext.nranges; ++x) { 124 rr = rl->runetype_ext.ranges; 125 126 rr[x].min = ntohl(rr[x].min); 127 rr[x].max = ntohl(rr[x].max); 128 if ((rr[x].map = ntohl(rr[x].map)) == 0) { 129 int len = rr[x].max - rr[x].min + 1; 130 rr[x].types = rl->variable; 131 rl->variable = rr[x].types + len; 132 if (rl->variable > lastp) { 133 free(data); 134 return(0); 135 } 136 while (len-- > 0) 137 rr[x].types[len] = ntohl(rr[x].types[len]); 138 } else 139 rr[x].types = 0; 140 } 141 142 for (x = 0; x < rl->maplower_ext.nranges; ++x) { 143 rr = rl->maplower_ext.ranges; 144 145 rr[x].min = ntohl(rr[x].min); 146 rr[x].max = ntohl(rr[x].max); 147 rr[x].map = ntohl(rr[x].map); 148 } 149 150 for (x = 0; x < rl->mapupper_ext.nranges; ++x) { 151 rr = rl->mapupper_ext.ranges; 152 153 rr[x].min = ntohl(rr[x].min); 154 rr[x].max = ntohl(rr[x].max); 155 rr[x].map = ntohl(rr[x].map); 156 } 157 if (((char *)rl->variable) + rl->variable_len > (char *)lastp) { 158 free(data); 159 return(0); 160 } 161 162 /* 163 * Go out and zero pointers that should be zero. 164 */ 165 if (!rl->variable_len) 166 rl->variable = 0; 167 168 if (!rl->runetype_ext.nranges) 169 rl->runetype_ext.ranges = 0; 170 171 if (!rl->maplower_ext.nranges) 172 rl->maplower_ext.ranges = 0; 173 174 if (!rl->mapupper_ext.nranges) 175 rl->mapupper_ext.ranges = 0; 176 177 return(rl); 178 } 179