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 * $FreeBSD: src/lib/libc/locale/ldpart.c,v 1.7.2.3 2002/08/12 11:17:37 ache Exp $ 27 * $DragonFly: src/lib/libc/locale/Attic/ldpart.c,v 1.2 2003/06/17 04:26:44 dillon Exp $ 28 */ 29 30 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <sys/syslimits.h> 33 #include <errno.h> 34 #include <fcntl.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #include "setlocale.h" 40 #include "ldpart.h" 41 42 static int split_lines(char *, const char *); 43 44 int 45 __part_load_locale(const char *name, 46 int *using_locale, 47 char *locale_buf, 48 const char *category_filename, 49 int locale_buf_size_max, 50 int locale_buf_size_min, 51 const char **dst_localebuf) 52 { 53 int saverr, fd, i, num_lines; 54 char *lbuf, *p; 55 const char *plim; 56 char filename[PATH_MAX]; 57 struct stat st; 58 size_t namesize, bufsize; 59 60 /* 'name' must be already checked. */ 61 if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) { 62 *using_locale = 0; 63 return (_LDP_CACHE); 64 } 65 66 /* 67 * If the locale name is the same as our cache, use the cache. 68 */ 69 if (locale_buf != NULL && strcmp(name, locale_buf) == 0) { 70 *using_locale = 1; 71 return (_LDP_CACHE); 72 } 73 74 /* 75 * Slurp the locale file into the cache. 76 */ 77 namesize = strlen(name) + 1; 78 79 /* 'PathLocale' must be already set & checked. */ 80 /* Range checking not needed, 'name' size is limited */ 81 strcpy(filename, _PathLocale); 82 strcat(filename, "/"); 83 strcat(filename, name); 84 strcat(filename, "/"); 85 strcat(filename, category_filename); 86 if ((fd = _open(filename, O_RDONLY)) < 0) 87 return (_LDP_ERROR); 88 if (_fstat(fd, &st) != 0) 89 goto bad_locale; 90 if (st.st_size <= 0) { 91 errno = EFTYPE; 92 goto bad_locale; 93 } 94 bufsize = namesize + st.st_size; 95 if ((lbuf = malloc(bufsize)) == NULL) { 96 errno = ENOMEM; 97 goto bad_locale; 98 } 99 (void)strcpy(lbuf, name); 100 p = lbuf + namesize; 101 plim = p + st.st_size; 102 if (_read(fd, p, (size_t) st.st_size) != st.st_size) 103 goto bad_lbuf; 104 /* 105 * Parse the locale file into localebuf. 106 */ 107 if (plim[-1] != '\n') { 108 errno = EFTYPE; 109 goto bad_lbuf; 110 } 111 num_lines = split_lines(p, plim); 112 if (num_lines >= locale_buf_size_max) 113 num_lines = locale_buf_size_max; 114 else if (num_lines >= locale_buf_size_min) 115 num_lines = locale_buf_size_min; 116 else { 117 errno = EFTYPE; 118 goto bad_lbuf; 119 } 120 (void)_close(fd); 121 /* 122 * Record the successful parse in the cache. 123 */ 124 if (locale_buf != NULL) 125 free(locale_buf); 126 locale_buf = lbuf; 127 for (p = locale_buf, i = 0; i < num_lines; i++) 128 dst_localebuf[i] = (p += strlen(p) + 1); 129 for (i = num_lines; i < locale_buf_size_max; i++) 130 dst_localebuf[i] = NULL; 131 *using_locale = 1; 132 133 return (_LDP_LOADED); 134 135 bad_lbuf: 136 saverr = errno; 137 free(lbuf); 138 errno = saverr; 139 bad_locale: 140 saverr = errno; 141 (void)_close(fd); 142 errno = saverr; 143 144 return (_LDP_ERROR); 145 } 146 147 static int 148 split_lines(char *p, const char *plim) 149 { 150 int i; 151 152 for (i = 0; p < plim; i++) { 153 p = strchr(p, '\n'); 154 *p++ = '\0'; 155 } 156 return (i); 157 } 158 159