OpenBSD-4.6/lib/libc/locale/rune.c
/* $OpenBSD: rune.c,v 1.2 2006/04/02 21:38:57 djm Exp $ */
/* $NetBSD: rune.c,v 1.26 2004/05/09 11:26:33 kleink Exp $ */
/*-
* Copyright (c)1999 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*-
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Paul Borman at Krystal Technologies.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <wchar.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "rune.h"
#include "rune_local.h"
static int readrange(_RuneLocale *, _RuneRange *, _FileRuneRange *, void *, FILE *);
static void _freeentry(_RuneRange *);
static void _wctype_init(_RuneLocale *rl);
static int
readrange(_RuneLocale *rl, _RuneRange *rr, _FileRuneRange *frr, void *lastp,
FILE *fp)
{
uint32_t i;
_RuneEntry *re;
_FileRuneEntry fre;
re = (_RuneEntry *)rl->rl_variable;
rr->rr_nranges = ntohl(frr->frr_nranges);
if (rr->rr_nranges == 0) {
rr->rr_rune_ranges = NULL;
return 0;
}
rr->rr_rune_ranges = re;
for (i = 0; i < rr->rr_nranges; i++) {
if (fread(&fre, sizeof(fre), 1, fp) != 1)
return -1;
re->re_min = ntohl((u_int32_t)fre.fre_min);
re->re_max = ntohl((u_int32_t)fre.fre_max);
re->re_map = ntohl((u_int32_t)fre.fre_map);
re++;
if ((void *)re > lastp)
return -1;
}
rl->rl_variable = re;
return 0;
}
static int
readentry(_RuneRange *rr, FILE *fp)
{
_RuneEntry *re;
size_t l, i, j;
int error;
re = rr->rr_rune_ranges;
for (i = 0; i < rr->rr_nranges; i++) {
if (re[i].re_map != 0) {
re[i].re_rune_types = NULL;
continue;
}
l = re[i].re_max - re[i].re_min + 1;
re[i].re_rune_types = calloc(l, sizeof(_RuneType));
if (!re[i].re_rune_types) {
error = ENOMEM;
goto fail;
}
if (fread(re[i].re_rune_types, sizeof(_RuneType), l, fp) != l)
goto fail2;
for (j = 0; j < l; j++)
re[i].re_rune_types[j] = ntohl(re[i].re_rune_types[j]);
}
return 0;
fail:
for (j = 0; j < i; j++) {
free(re[j].re_rune_types);
re[j].re_rune_types = NULL;
}
return error;
fail2:
for (j = 0; j <= i; j++) {
free(re[j].re_rune_types);
re[j].re_rune_types = NULL;
}
return errno;
}
/* XXX: temporary implementation */
static void
find_codeset(_RuneLocale *rl)
{
char *top, *codeset, *tail, *ep;
/* end of rl_variable region */
ep = (char *)rl->rl_variable;
ep += rl->rl_variable_len;
rl->rl_codeset = NULL;
if (!(top = strstr(rl->rl_variable, _RUNE_CODESET)))
return;
tail = strpbrk(top, " \t");
codeset = top + sizeof(_RUNE_CODESET) - 1;
if (tail) {
*top = *tail;
*tail = '\0';
rl->rl_codeset = strdup(codeset);
strlcpy(top + 1, tail + 1, (unsigned)(ep - (top + 1)));
} else {
*top = '\0';
rl->rl_codeset = strdup(codeset);
}
}
void
_freeentry(_RuneRange *rr)
{
_RuneEntry *re;
uint32_t i;
re = rr->rr_rune_ranges;
for (i = 0; i < rr->rr_nranges; i++) {
if (re[i].re_rune_types)
free(re[i].re_rune_types);
re[i].re_rune_types = NULL;
}
}
void
_wctype_init(_RuneLocale *rl)
{
memcpy(&rl->rl_wctype, &_DefaultRuneLocale.rl_wctype,
sizeof(rl->rl_wctype));
}
_RuneLocale *
_Read_RuneMagi(FILE *fp)
{
/* file */
_FileRuneLocale frl;
/* host data */
char *hostdata;
size_t hostdatalen;
void *lastp;
_RuneLocale *rl;
struct stat sb;
int x;
if (fstat(fileno(fp), &sb) < 0)
return NULL;
if (sb.st_size < sizeof(_FileRuneLocale))
return NULL;
/* XXX more validation? */
/* Someone might have read the magic number once already */
rewind(fp);
if (fread(&frl, sizeof(frl), 1, fp) != 1)
return NULL;
if (memcmp(frl.frl_magic, _RUNE_MAGIC_1, sizeof(frl.frl_magic)))
return NULL;
hostdatalen = sizeof(*rl) + ntohl((u_int32_t)frl.frl_variable_len) +
ntohl(frl.frl_runetype_ext.frr_nranges) * sizeof(_RuneEntry) +
ntohl(frl.frl_maplower_ext.frr_nranges) * sizeof(_RuneEntry) +
ntohl(frl.frl_mapupper_ext.frr_nranges) * sizeof(_RuneEntry);
if ((hostdata = malloc(hostdatalen)) == NULL)
return NULL;
memset(hostdata, 0, hostdatalen);
lastp = hostdata + hostdatalen;
rl = (_RuneLocale *)hostdata;
rl->rl_variable = rl + 1;
memcpy(rl->rl_magic, frl.frl_magic, sizeof(rl->rl_magic));
memcpy(rl->rl_encoding, frl.frl_encoding, sizeof(rl->rl_encoding));
rl->rl_invalid_rune = ntohl((u_int32_t)frl.frl_invalid_rune);
rl->rl_variable_len = ntohl((u_int32_t)frl.frl_variable_len);
for (x = 0; x < _CACHED_RUNES; ++x) {
rl->rl_runetype[x] = ntohl(frl.frl_runetype[x]);
/* XXX assumes rune_t = u_int32_t */
rl->rl_maplower[x] = ntohl((u_int32_t)frl.frl_maplower[x]);
rl->rl_mapupper[x] = ntohl((u_int32_t)frl.frl_mapupper[x]);
}
if (readrange(rl, &rl->rl_runetype_ext, &frl.frl_runetype_ext, lastp, fp))
{
free(hostdata);
return NULL;
}
if (readrange(rl, &rl->rl_maplower_ext, &frl.frl_maplower_ext, lastp, fp))
{
free(hostdata);
return NULL;
}
if (readrange(rl, &rl->rl_mapupper_ext, &frl.frl_mapupper_ext, lastp, fp))
{
free(hostdata);
return NULL;
}
if (readentry(&rl->rl_runetype_ext, fp) != 0) {
free(hostdata);
return NULL;
}
if ((u_int8_t *)rl->rl_variable + rl->rl_variable_len >
(u_int8_t *)lastp) {
_freeentry(&rl->rl_runetype_ext);
free(hostdata);
return NULL;
}
if (rl->rl_variable_len == 0)
rl->rl_variable = NULL;
else if (fread(rl->rl_variable, rl->rl_variable_len, 1, fp) != 1) {
_freeentry(&rl->rl_runetype_ext);
free(hostdata);
return NULL;
}
find_codeset(rl);
_wctype_init(rl);
/*
* error if we have junk at the tail,
* or if we can't allocate memory.
*/
if (ftell(fp) != sb.st_size || __make_ctype_tabs(rl) == -1) {
_freeentry(&rl->rl_runetype_ext);
free(hostdata);
return NULL;
}
return(rl);
}
void
_NukeRune(_RuneLocale *rl)
{
if (rl != &_DefaultRuneLocale) {
_freeentry(&rl->rl_runetype_ext);
free(rl->rl_tabs);
free(rl->rl_codeset);
free(rl);
}
}