port/locale/ldpart.c

4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore * Copyright 2013 Garrett D'Amore <garrett@damore.org>
6b5e5868e7ebf1aff3a5abd7d0c4ef0e5fbf3648Garrett D'Amore * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Redistribution and use in source and binary forms, with or without
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * modification, are permitted provided that the following conditions
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * are met:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 1. Redistributions of source code must retain the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    notice, this list of conditions and the following disclaimer.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 2. Redistributions in binary form must reproduce the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    notice, this list of conditions and the following disclaimer in the
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    documentation and/or other materials provided with the distribution.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * SUCH DAMAGE.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include "lint.h"
eda71b4a8fb1d0b34d0f08c47b43af49428d24c3Garrett D'Amore#include "file64.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <sys/types.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <sys/stat.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <errno.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <fcntl.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <limits.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <stdlib.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <string.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <unistd.h>
6da5aa940d1e163c6f244b5523c22d545bfb954bGarrett D'Amore#include <stdio.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore#include "libc.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include "ldpart.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include "setlocale.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic int split_lines(char *, const char *);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoreint
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore__part_load_locale(const char *name,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    char **locale_buf, const char *category_filename,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int locale_buf_size_max, int locale_buf_size_min,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    const char **dst_localebuf)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int     saverr, fd, i, num_lines;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    char        *lbuf, *p;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    const char  *plim;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    char        filename[PATH_MAX];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    struct stat st;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    size_t      namesize, bufsize;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     * Slurp the locale file into the cache.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    namesize = strlen(name) + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    /* 'PathLocale' must be already set & checked. */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
6da5aa940d1e163c6f244b5523c22d545bfb954bGarrett D'Amore    (void) snprintf(filename, sizeof (filename), "%s/%s/%s/LCL_DATA",
6da5aa940d1e163c6f244b5523c22d545bfb954bGarrett D'Amore        _PathLocale, name, category_filename);
6da5aa940d1e163c6f244b5523c22d545bfb954bGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if ((fd = open(filename, O_RDONLY)) < 0)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return (_LDP_ERROR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (fstat(fd, &st) != 0)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_locale;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (st.st_size <= 0) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = EINVAL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_locale;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    bufsize = namesize + st.st_size;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    if ((lbuf = libc_malloc(bufsize)) == NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = ENOMEM;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_locale;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    (void) strcpy(lbuf, name);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    p = lbuf + namesize;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    plim = p + st.st_size;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (read(fd, p, (size_t)st.st_size) != st.st_size)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_lbuf;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     * Parse the locale file into localebuf.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (plim[-1] != '\n') {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = EINVAL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_lbuf;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    num_lines = split_lines(p, plim);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (num_lines >= locale_buf_size_max)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        num_lines = locale_buf_size_max;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    else if (num_lines >= locale_buf_size_min)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        num_lines = locale_buf_size_min;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = EINVAL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        goto bad_lbuf;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    (void) close(fd);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     * Record the successful parse in the cache.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore     */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    *locale_buf = lbuf;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    for (p = *locale_buf, i = 0; i < num_lines; i++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        dst_localebuf[i] = (p += strlen(p) + 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    for (i = num_lines; i < locale_buf_size_max; i++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        dst_localebuf[i] = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    return (_LDP_LOADED);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorebad_lbuf:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    saverr = errno;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    free(lbuf);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    errno = saverr;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorebad_locale:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    saverr = errno;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    (void) close(fd);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    errno = saverr;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    return (_LDP_ERROR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic int
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoresplit_lines(char *p, const char *plim)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    i = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    while (p < plim) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        if (*p == '\n') {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore            *p = '\0';
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore            i++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        p++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    return (i);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}