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Commit	Line	Data
	1	/*
	2	* Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	15	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	16	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	17	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	18	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	19	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	20	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	21	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	22	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	23	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	24	* SUCH DAMAGE.
	25	*/
	26
	27	#include <sys/cdefs.h>
	28	__FBSDID("$FreeBSD: src/lib/libc/locale/ldpart.c,v 1.15 2004/04/25 19:56:50 ache Exp $");
	29
	30	#include "xlocale_private.h"
	31
	32	#include "namespace.h"
	33	#include <sys/types.h>
	34	#include <sys/stat.h>
	35
	36	#include <errno.h>
	37	#include <fcntl.h>
	38	#include <limits.h>
	39	#include <stdlib.h>
	40	#include <string.h>
	41	#include <unistd.h>
	42	#include "un-namespace.h"
	43
	44	#include "ldpart.h"
	45	#include "setlocale.h"
	46
	47	static int split_lines(char , const char );
	48
	49	__private_extern__ int
	50	__part_load_locale(const char *name,
	51	unsigned char *using_locale,
	52	char **locale_buf,
	53	const char *category_filename,
	54	int locale_buf_size_max,
	55	int locale_buf_size_min,
	56	const char **dst_localebuf)
	57	{
	58	int saverr, fd, i, num_lines;
	59	char lbuf, p;
	60	const char *plim;
	61	char filename[PATH_MAX];
	62	struct stat st;
	63	size_t namesize, bufsize;
	64
	65	/*
	66	* Slurp the locale file into the cache.
	67	*/
	68	namesize = strlen(name) + 1;
	69
	70	/* 'PathLocale' must be already set & checked. */
	71
	72	/* Range checking not needed, 'name' size is limited */
	73	strcpy(filename, name);
	74	strcat(filename, "/");
	75	strcat(filename, category_filename);
	76	if ((fd = __open_path_locale(filename)) < 0)
	77	return (_LDP_ERROR);
	78	if (_fstat(fd, &st) != 0)
	79	goto bad_locale;
	80	if (st.st_size <= 0) {
	81	errno = EFTYPE;
	82	goto bad_locale;
	83	}
	84	bufsize = namesize + st.st_size;
	85	if ((lbuf = malloc(bufsize)) == NULL) {
	86	errno = ENOMEM;
	87	goto bad_locale;
	88	}
	89	(void)strcpy(lbuf, name);
	90	p = lbuf + namesize;
	91	plim = p + st.st_size;
	92	if (_read(fd, p, (size_t) st.st_size) != st.st_size)
	93	goto bad_lbuf;
	94	/*
	95	* Parse the locale file into localebuf.
	96	*/
	97	if (plim[-1] != '\n') {
	98	errno = EFTYPE;
	99	goto bad_lbuf;
	100	}
	101	num_lines = split_lines(p, plim);
	102	if (num_lines >= locale_buf_size_max)
	103	num_lines = locale_buf_size_max;
	104	else if (num_lines < locale_buf_size_min) {
	105	errno = EFTYPE;
	106	goto bad_lbuf;
	107	}
	108	(void)_close(fd);
	109	/*
	110	* Record the successful parse in the cache.
	111	*/
	112	if (*locale_buf != NULL)
	113	free(*locale_buf);
	114	*locale_buf = lbuf;
	115	for (p = *locale_buf, i = 0; i < num_lines; i++)
	116	dst_localebuf[i] = (p += strlen(p) + 1);
	117	for (i = num_lines; i < locale_buf_size_max; i++)
	118	dst_localebuf[i] = NULL;
	119	*using_locale = 1;
	120
	121	return (_LDP_LOADED);
	122
	123	bad_lbuf:
	124	saverr = errno;
	125	free(lbuf);
	126	errno = saverr;
	127	bad_locale:
	128	saverr = errno;
	129	(void)_close(fd);
	130	errno = saverr;
	131
	132	return (_LDP_ERROR);
	133	}
	134
	135	static int
	136	split_lines(char p, const char plim)
	137	{
	138	int i;
	139
	140	i = 0;
	141	while (p < plim) {
	142	if (*p == '\n') {
	143	*p = '\0';
	144	i++;
	145	}
	146	p++;
	147	}
	148	return (i);
	149	}
	150
	151	__private_extern__ void
	152	__ldpart_free_extra(struct __xlocale_st_ldpart *lp)
	153	{
	154	if (lp)
	155	free(lp->_locale_buf);
	156	}