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228f8c4f8b
Suggested by: phantom
291 lines
8.0 KiB
C
291 lines
8.0 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Paul Borman at Krystal Technologies.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)rune.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <arpa/inet.h>
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#include <errno.h>
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#include <runetype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "un-namespace.h"
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#include "runefile.h"
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_RuneLocale *_Read_RuneMagi(FILE *);
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_RuneLocale *
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_Read_RuneMagi(FILE *fp)
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{
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char *fdata, *data;
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void *lastp;
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_FileRuneLocale *frl;
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_RuneLocale *rl;
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_FileRuneEntry *frr;
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_RuneEntry *rr;
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struct stat sb;
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int x, saverr;
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void *variable;
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_FileRuneEntry *runetype_ext_ranges;
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_FileRuneEntry *maplower_ext_ranges;
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_FileRuneEntry *mapupper_ext_ranges;
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int runetype_ext_len = 0;
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if (_fstat(fileno(fp), &sb) < 0)
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return (NULL);
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if ((size_t)sb.st_size < sizeof(_FileRuneLocale)) {
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errno = EFTYPE;
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return (NULL);
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}
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if ((fdata = malloc(sb.st_size)) == NULL)
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return (NULL);
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errno = 0;
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rewind(fp); /* Someone might have read the magic number once already */
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if (errno) {
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saverr = errno;
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free(fdata);
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errno = saverr;
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return (NULL);
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}
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if (fread(fdata, sb.st_size, 1, fp) != 1) {
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saverr = errno;
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free(fdata);
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errno = saverr;
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return (NULL);
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}
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frl = (_FileRuneLocale *)fdata;
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lastp = fdata + sb.st_size;
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variable = frl + 1;
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if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof(frl->magic))) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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frl->variable_len = ntohl(frl->variable_len);
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frl->runetype_ext_nranges = ntohl(frl->runetype_ext_nranges);
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frl->maplower_ext_nranges = ntohl(frl->maplower_ext_nranges);
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frl->mapupper_ext_nranges = ntohl(frl->mapupper_ext_nranges);
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for (x = 0; x < _CACHED_RUNES; ++x) {
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frl->runetype[x] = ntohl(frl->runetype[x]);
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frl->maplower[x] = ntohl(frl->maplower[x]);
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frl->mapupper[x] = ntohl(frl->mapupper[x]);
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}
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runetype_ext_ranges = (_FileRuneEntry *)variable;
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variable = runetype_ext_ranges + frl->runetype_ext_nranges;
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if (variable > lastp) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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maplower_ext_ranges = (_FileRuneEntry *)variable;
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variable = maplower_ext_ranges + frl->maplower_ext_nranges;
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if (variable > lastp) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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mapupper_ext_ranges = (_FileRuneEntry *)variable;
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variable = mapupper_ext_ranges + frl->mapupper_ext_nranges;
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if (variable > lastp) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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frr = runetype_ext_ranges;
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for (x = 0; x < frl->runetype_ext_nranges; ++x) {
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uint32_t *types;
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frr[x].min = ntohl(frr[x].min);
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frr[x].max = ntohl(frr[x].max);
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frr[x].map = ntohl(frr[x].map);
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if (frr[x].map == 0) {
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int len = frr[x].max - frr[x].min + 1;
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types = variable;
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variable = types + len;
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runetype_ext_len += len;
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if (variable > lastp) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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while (len-- > 0)
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types[len] = ntohl(types[len]);
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}
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}
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frr = maplower_ext_ranges;
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for (x = 0; x < frl->maplower_ext_nranges; ++x) {
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frr[x].min = ntohl(frr[x].min);
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frr[x].max = ntohl(frr[x].max);
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frr[x].map = ntohl(frr[x].map);
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}
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frr = mapupper_ext_ranges;
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for (x = 0; x < frl->mapupper_ext_nranges; ++x) {
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frr[x].min = ntohl(frr[x].min);
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frr[x].max = ntohl(frr[x].max);
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frr[x].map = ntohl(frr[x].map);
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}
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if ((char *)variable + frl->variable_len > (char *)lastp) {
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free(fdata);
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errno = EFTYPE;
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return (NULL);
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}
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/*
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* Convert from disk format to host format.
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*/
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data = malloc(sizeof(_RuneLocale) +
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(frl->runetype_ext_nranges + frl->maplower_ext_nranges +
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frl->mapupper_ext_nranges) * sizeof(_RuneEntry) +
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runetype_ext_len * sizeof(*rr->__types) +
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frl->variable_len);
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if (data == NULL) {
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saverr = errno;
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free(fdata);
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errno = saverr;
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return (NULL);
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}
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rl = (_RuneLocale *)data;
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rl->__variable = rl + 1;
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memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof(rl->__magic));
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memcpy(rl->__encoding, frl->encoding, sizeof(rl->__encoding));
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rl->__invalid_rune = 0;
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rl->__variable_len = frl->variable_len;
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rl->__runetype_ext.__nranges = frl->runetype_ext_nranges;
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rl->__maplower_ext.__nranges = frl->maplower_ext_nranges;
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rl->__mapupper_ext.__nranges = frl->mapupper_ext_nranges;
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for (x = 0; x < _CACHED_RUNES; ++x) {
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rl->__runetype[x] = frl->runetype[x];
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rl->__maplower[x] = frl->maplower[x];
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rl->__mapupper[x] = frl->mapupper[x];
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}
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rl->__runetype_ext.__ranges = (_RuneEntry *)rl->__variable;
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rl->__variable = rl->__runetype_ext.__ranges +
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rl->__runetype_ext.__nranges;
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rl->__maplower_ext.__ranges = (_RuneEntry *)rl->__variable;
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rl->__variable = rl->__maplower_ext.__ranges +
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rl->__maplower_ext.__nranges;
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rl->__mapupper_ext.__ranges = (_RuneEntry *)rl->__variable;
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rl->__variable = rl->__mapupper_ext.__ranges +
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rl->__mapupper_ext.__nranges;
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variable = mapupper_ext_ranges + frl->mapupper_ext_nranges;
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frr = runetype_ext_ranges;
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rr = rl->__runetype_ext.__ranges;
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for (x = 0; x < rl->__runetype_ext.__nranges; ++x) {
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uint32_t *types;
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rr[x].__min = frr[x].min;
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rr[x].__max = frr[x].max;
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rr[x].__map = frr[x].map;
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if (rr[x].__map == 0) {
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int len = rr[x].__max - rr[x].__min + 1;
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types = variable;
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variable = types + len;
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rr[x].__types = rl->__variable;
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rl->__variable = rr[x].__types + len;
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while (len-- > 0)
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rr[x].__types[len] = types[len];
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} else
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rr[x].__types = NULL;
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}
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frr = maplower_ext_ranges;
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rr = rl->__maplower_ext.__ranges;
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for (x = 0; x < rl->__maplower_ext.__nranges; ++x) {
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rr[x].__min = frr[x].min;
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rr[x].__max = frr[x].max;
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rr[x].__map = frr[x].map;
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}
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frr = mapupper_ext_ranges;
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rr = rl->__mapupper_ext.__ranges;
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for (x = 0; x < rl->__mapupper_ext.__nranges; ++x) {
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rr[x].__min = frr[x].min;
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rr[x].__max = frr[x].max;
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rr[x].__map = frr[x].map;
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}
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memcpy(rl->__variable, variable, rl->__variable_len);
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free(fdata);
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/*
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* Go out and zero pointers that should be zero.
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*/
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if (!rl->__variable_len)
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rl->__variable = NULL;
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if (!rl->__runetype_ext.__nranges)
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rl->__runetype_ext.__ranges = NULL;
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if (!rl->__maplower_ext.__nranges)
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rl->__maplower_ext.__ranges = NULL;
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if (!rl->__mapupper_ext.__nranges)
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rl->__mapupper_ext.__ranges = NULL;
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return (rl);
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}
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