| 0,0 → 1,191 |
|---|
| /* |
| * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org> |
| * 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. |
| */ |
| |
| #include <sys/cdefs.h> |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/syslimits.h> |
| #include <fcntl.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "setlocale.h" |
| #include "ldpart.h" |
| |
| static int split_lines(char *, const char *); |
| static void set_from_buf(const char *, int, const char **); |
| |
| int |
| __part_load_locale(const char *name, |
| int *using_locale, |
| char *locale_buf, |
| const char *category_filename, |
| int locale_buf_size_max, |
| int locale_buf_size_min, |
| const char **dst_localebuf) { |
| |
| static char locale_buf_C[] = "C"; |
| static int num_lines; |
| |
| int fd; |
| char *lbuf; |
| char *p; |
| const char *plim; |
| char filename[PATH_MAX]; |
| #ifdef __USE_INTERNAL_STAT64 |
| struct stat64 st; |
| #else |
| struct stat st; |
| #endif |
| size_t namesize; |
| size_t bufsize; |
| int save_using_locale; |
| char *nptr; |
| |
| save_using_locale = *using_locale; |
| *using_locale = 0; |
| |
| if (name == NULL) |
| goto no_locale; |
| |
| if (!strcmp(name, "C") || !strcmp(name, "POSIX")) |
| return 0; |
| |
| /* |
| * If the locale name is the same as our cache, use the cache. |
| */ |
| lbuf = locale_buf; |
| if (lbuf != NULL && strcmp(name, lbuf) == 0) { |
| set_from_buf(lbuf, num_lines, dst_localebuf); |
| *using_locale = 1; |
| return 0; |
| } |
| |
| /* |
| * Slurp the locale file into the cache. |
| */ |
| namesize = strlen(name) + 1; |
| |
| if (!_PathLocale) |
| goto no_locale; |
| /* Range checking not needed, 'name' size is limited */ |
| strcpy(filename, _PathLocale); |
| strcat(filename, "/"); |
| strcat(filename, name); |
| strcat(filename, "/"); |
| strcat(filename, category_filename); |
| fd = open(filename, O_RDONLY); |
| if (fd < 0) |
| goto no_locale; |
| #ifdef __USE_INTERNAL_STAT64 |
| if (fstat64(fd, &st) != 0) |
| #else |
| if (fstat(fd, &st) != 0) |
| #endif |
| goto bad_locale; |
| if (st.st_size <= 0) |
| goto bad_locale; |
| bufsize = namesize + st.st_size; |
| locale_buf = NULL; |
| |
| if (lbuf == NULL || lbuf == locale_buf_C) |
| { |
| lbuf = malloc(bufsize); |
| } |
| else |
| { |
| nptr = realloc(lbuf, bufsize); |
| if (!nptr && lbuf) |
| free (lbuf); |
| lbuf = nptr; |
| } |
| |
| if (lbuf == NULL) |
| goto bad_locale; |
| (void) strcpy(lbuf, name); |
| p = lbuf + namesize; |
| plim = p + st.st_size; |
| if (read(fd, p, (size_t) st.st_size) != st.st_size) |
| goto bad_lbuf; |
| if (close(fd) != 0) |
| goto bad_lbuf; |
| /* |
| * Parse the locale file into localebuf. |
| */ |
| if (plim[-1] != '\n') |
| goto bad_lbuf; |
| num_lines = split_lines(p, plim); |
| if (num_lines >= locale_buf_size_max) |
| num_lines = locale_buf_size_max; |
| else if (num_lines >= locale_buf_size_min) |
| num_lines = locale_buf_size_min; |
| else |
| goto reset_locale; |
| set_from_buf(lbuf, num_lines, dst_localebuf); |
| /* |
| * Record the successful parse in the cache. |
| */ |
| locale_buf = lbuf; |
| |
| *using_locale = 1; |
| return 0; |
| |
| reset_locale: |
| locale_buf = locale_buf_C; |
| save_using_locale = 0; |
| bad_lbuf: |
| free(lbuf); |
| bad_locale: |
| (void)close(fd); |
| no_locale: |
| *using_locale = save_using_locale; |
| return -1; |
| } |
| |
| static int |
| split_lines(char *p, const char *plim) { |
| |
| int i; |
| |
| for (i = 0; p < plim; i++) { |
| p = strchr(p, '\n'); |
| *p++ = '\0'; |
| } |
| return i; |
| } |
| |
| static void |
| set_from_buf(const char *p, int num_lines, const char **dst_localebuf) { |
| |
| const char **ap; |
| int i; |
| |
| for (ap = dst_localebuf, i = 0; i < num_lines; ++ap, ++i) |
| *ap = p += strlen(p) + 1; |
| } |
| |