190423eceSAlexey Zelkin /* 274f2b975SAlexey Zelkin * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org> 390423eceSAlexey Zelkin * All rights reserved. 490423eceSAlexey Zelkin * 590423eceSAlexey Zelkin * Redistribution and use in source and binary forms, with or without 690423eceSAlexey Zelkin * modification, are permitted provided that the following conditions 790423eceSAlexey Zelkin * are met: 890423eceSAlexey Zelkin * 1. Redistributions of source code must retain the above copyright 990423eceSAlexey Zelkin * notice, this list of conditions and the following disclaimer. 1090423eceSAlexey Zelkin * 2. Redistributions in binary form must reproduce the above copyright 1190423eceSAlexey Zelkin * notice, this list of conditions and the following disclaimer in the 1290423eceSAlexey Zelkin * documentation and/or other materials provided with the distribution. 1390423eceSAlexey Zelkin * 1490423eceSAlexey Zelkin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1590423eceSAlexey Zelkin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1690423eceSAlexey Zelkin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1790423eceSAlexey Zelkin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1890423eceSAlexey Zelkin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1990423eceSAlexey Zelkin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2090423eceSAlexey Zelkin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2190423eceSAlexey Zelkin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2290423eceSAlexey Zelkin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2390423eceSAlexey Zelkin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2490423eceSAlexey Zelkin * SUCH DAMAGE. 2590423eceSAlexey Zelkin * 2690423eceSAlexey Zelkin * $FreeBSD$ 2790423eceSAlexey Zelkin */ 2890423eceSAlexey Zelkin 297d2cc62bSAlexey Zelkin #include "namespace.h" 3090423eceSAlexey Zelkin #include <sys/types.h> 3190423eceSAlexey Zelkin #include <sys/stat.h> 3290423eceSAlexey Zelkin #include <sys/syslimits.h> 3390423eceSAlexey Zelkin #include <fcntl.h> 3490423eceSAlexey Zelkin #include <stdlib.h> 3590423eceSAlexey Zelkin #include <string.h> 36278d1a20SDaniel Eischen #include <unistd.h> 37278d1a20SDaniel Eischen #include "un-namespace.h" 3874f2b975SAlexey Zelkin 3990423eceSAlexey Zelkin #include "setlocale.h" 4090423eceSAlexey Zelkin #include "ldpart.h" 4190423eceSAlexey Zelkin 4290423eceSAlexey Zelkin static int split_lines(char *, const char *); 4390423eceSAlexey Zelkin static void set_from_buf(const char *, int, const char **); 4490423eceSAlexey Zelkin 4590423eceSAlexey Zelkin int 4690423eceSAlexey Zelkin __part_load_locale(const char *name, 4790423eceSAlexey Zelkin int* using_locale, 4890423eceSAlexey Zelkin char *locale_buf, 4990423eceSAlexey Zelkin const char *category_name, 50fc38c1e5SAlexey Zelkin int locale_buf_size_max, 51fc38c1e5SAlexey Zelkin int locale_buf_size_min, 5290423eceSAlexey Zelkin const char **dst_localebuf) { 5390423eceSAlexey Zelkin 5490423eceSAlexey Zelkin static char locale_buf_C[] = "C"; 5590423eceSAlexey Zelkin static int num_lines; 5690423eceSAlexey Zelkin 5790423eceSAlexey Zelkin int fd; 5890423eceSAlexey Zelkin char * lbuf; 5990423eceSAlexey Zelkin char * p; 6090423eceSAlexey Zelkin const char * plim; 6190423eceSAlexey Zelkin char filename[PATH_MAX]; 6290423eceSAlexey Zelkin struct stat st; 6390423eceSAlexey Zelkin size_t namesize; 6490423eceSAlexey Zelkin size_t bufsize; 6590423eceSAlexey Zelkin int save_using_locale; 6690423eceSAlexey Zelkin 6790423eceSAlexey Zelkin save_using_locale = *using_locale; 6890423eceSAlexey Zelkin *using_locale = 0; 6990423eceSAlexey Zelkin 7090423eceSAlexey Zelkin if (name == NULL) 7190423eceSAlexey Zelkin goto no_locale; 7290423eceSAlexey Zelkin 7390423eceSAlexey Zelkin if (!strcmp(name, "C") || !strcmp(name, "POSIX")) 7490423eceSAlexey Zelkin return 0; 7590423eceSAlexey Zelkin 7690423eceSAlexey Zelkin /* 7774f2b975SAlexey Zelkin * If the locale name is the same as our cache, use the cache. 7890423eceSAlexey Zelkin */ 7990423eceSAlexey Zelkin lbuf = locale_buf; 8090423eceSAlexey Zelkin if (lbuf != NULL && strcmp(name, lbuf) == 0) { 8190423eceSAlexey Zelkin set_from_buf(lbuf, num_lines, dst_localebuf); 8290423eceSAlexey Zelkin *using_locale = 1; 8390423eceSAlexey Zelkin return 0; 8490423eceSAlexey Zelkin } 8590423eceSAlexey Zelkin /* 8674f2b975SAlexey Zelkin * Slurp the locale file into the cache. 8790423eceSAlexey Zelkin */ 8890423eceSAlexey Zelkin namesize = strlen(name) + 1; 8990423eceSAlexey Zelkin 9090423eceSAlexey Zelkin if (!_PathLocale) 9190423eceSAlexey Zelkin goto no_locale; 9290423eceSAlexey Zelkin /* Range checking not needed, 'name' size is limited */ 9390423eceSAlexey Zelkin strcpy(filename, _PathLocale); 9490423eceSAlexey Zelkin strcat(filename, "/"); 9590423eceSAlexey Zelkin strcat(filename, name); 9690423eceSAlexey Zelkin strcat(filename, "/"); 9790423eceSAlexey Zelkin strcat(filename, category_name); 9890423eceSAlexey Zelkin fd = _open(filename, O_RDONLY); 9990423eceSAlexey Zelkin if (fd < 0) 10090423eceSAlexey Zelkin goto no_locale; 1013b5b529fSDaniel Eischen if (_fstat(fd, &st) != 0) 10290423eceSAlexey Zelkin goto bad_locale; 10390423eceSAlexey Zelkin if (st.st_size <= 0) 10490423eceSAlexey Zelkin goto bad_locale; 10590423eceSAlexey Zelkin bufsize = namesize + st.st_size; 10690423eceSAlexey Zelkin locale_buf = NULL; 10790423eceSAlexey Zelkin lbuf = (lbuf == NULL || lbuf == locale_buf_C) ? 10890423eceSAlexey Zelkin malloc(bufsize) : reallocf(lbuf, bufsize); 10990423eceSAlexey Zelkin if (lbuf == NULL) 11090423eceSAlexey Zelkin goto bad_locale; 11190423eceSAlexey Zelkin (void) strcpy(lbuf, name); 11290423eceSAlexey Zelkin p = lbuf + namesize; 11390423eceSAlexey Zelkin plim = p + st.st_size; 11490423eceSAlexey Zelkin if (_read(fd, p, (size_t) st.st_size) != st.st_size) 11590423eceSAlexey Zelkin goto bad_lbuf; 11690423eceSAlexey Zelkin if (_close(fd) != 0) 11790423eceSAlexey Zelkin goto bad_lbuf; 11890423eceSAlexey Zelkin /* 11974f2b975SAlexey Zelkin * Parse the locale file into localebuf. 12090423eceSAlexey Zelkin */ 12190423eceSAlexey Zelkin if (plim[-1] != '\n') 12290423eceSAlexey Zelkin goto bad_lbuf; 12390423eceSAlexey Zelkin num_lines = split_lines(p, plim); 124fc38c1e5SAlexey Zelkin if (num_lines >= locale_buf_size_max) 125fc38c1e5SAlexey Zelkin num_lines = locale_buf_size_max; 126fc38c1e5SAlexey Zelkin else if (num_lines >= locale_buf_size_min) 127fc38c1e5SAlexey Zelkin num_lines = locale_buf_size_min; 12890423eceSAlexey Zelkin else 12990423eceSAlexey Zelkin goto reset_locale; 13090423eceSAlexey Zelkin set_from_buf(lbuf, num_lines, dst_localebuf); 13190423eceSAlexey Zelkin /* 13290423eceSAlexey Zelkin ** Record the successful parse in the cache. 13390423eceSAlexey Zelkin */ 13490423eceSAlexey Zelkin locale_buf = lbuf; 13590423eceSAlexey Zelkin 13690423eceSAlexey Zelkin *using_locale = 1; 13790423eceSAlexey Zelkin return 0; 13890423eceSAlexey Zelkin 13990423eceSAlexey Zelkin reset_locale: 14090423eceSAlexey Zelkin locale_buf = locale_buf_C; 14190423eceSAlexey Zelkin save_using_locale = 0; 14290423eceSAlexey Zelkin bad_lbuf: 14390423eceSAlexey Zelkin free(lbuf); 14490423eceSAlexey Zelkin bad_locale: 14590423eceSAlexey Zelkin (void)_close(fd); 14690423eceSAlexey Zelkin no_locale: 14790423eceSAlexey Zelkin *using_locale = save_using_locale; 14890423eceSAlexey Zelkin return -1; 14990423eceSAlexey Zelkin } 15090423eceSAlexey Zelkin 15190423eceSAlexey Zelkin static int 15290423eceSAlexey Zelkin split_lines(char *p, const char *plim) 15390423eceSAlexey Zelkin { 15490423eceSAlexey Zelkin int i; 15590423eceSAlexey Zelkin 15690423eceSAlexey Zelkin for (i = 0; p < plim; i++) { 15790423eceSAlexey Zelkin p = strchr(p, '\n'); 15890423eceSAlexey Zelkin *p++ = '\0'; 15990423eceSAlexey Zelkin } 16090423eceSAlexey Zelkin return i; 16190423eceSAlexey Zelkin } 16290423eceSAlexey Zelkin 16390423eceSAlexey Zelkin static void 16490423eceSAlexey Zelkin set_from_buf(const char *p, int num_lines, const char **dst_localebuf) 16590423eceSAlexey Zelkin { 16690423eceSAlexey Zelkin const char **ap; 16790423eceSAlexey Zelkin int i; 16890423eceSAlexey Zelkin 16990423eceSAlexey Zelkin for (ap = dst_localebuf, i = 0; i < num_lines; ++ap, ++i) 17090423eceSAlexey Zelkin *ap = p += strlen(p) + 1; 17190423eceSAlexey Zelkin } 17290423eceSAlexey Zelkin 173