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 /* 28 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 29 * Use is subject to license terms. 30 */ 31 32 #include "lint.h" 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <limits.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include "ldpart.h" 43 #include "setlocale.h" 44 45 static int split_lines(char *, const char *); 46 47 int 48 __part_load_locale(const char *name, int *using_locale, 49 char **locale_buf, const char *category_filename, 50 int locale_buf_size_max, 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 81 /* Range checking not needed, 'name' size is limited */ 82 (void) strcpy(filename, _PathLocale); 83 (void) strcat(filename, "/"); 84 (void) strcat(filename, name); 85 (void) strcat(filename, "/"); 86 (void) strcat(filename, category_filename); 87 if ((fd = open(filename, O_RDONLY)) < 0) 88 return (_LDP_ERROR); 89 if (fstat(fd, &st) != 0) 90 goto bad_locale; 91 if (st.st_size <= 0) { 92 errno = EINVAL; 93 goto bad_locale; 94 } 95 bufsize = namesize + st.st_size; 96 if ((lbuf = malloc(bufsize)) == NULL) { 97 errno = ENOMEM; 98 goto bad_locale; 99 } 100 (void) strcpy(lbuf, name); 101 p = lbuf + namesize; 102 plim = p + st.st_size; 103 if (read(fd, p, (size_t)st.st_size) != st.st_size) 104 goto bad_lbuf; 105 /* 106 * Parse the locale file into localebuf. 107 */ 108 if (plim[-1] != '\n') { 109 errno = EINVAL; 110 goto bad_lbuf; 111 } 112 num_lines = split_lines(p, plim); 113 if (num_lines >= locale_buf_size_max) 114 num_lines = locale_buf_size_max; 115 else if (num_lines >= locale_buf_size_min) 116 num_lines = locale_buf_size_min; 117 else { 118 errno = EINVAL; 119 goto bad_lbuf; 120 } 121 (void) close(fd); 122 /* 123 * Record the successful parse in the cache. 124 */ 125 if (*locale_buf != NULL) 126 free(*locale_buf); 127 *locale_buf = lbuf; 128 for (p = *locale_buf, i = 0; i < num_lines; i++) 129 dst_localebuf[i] = (p += strlen(p) + 1); 130 for (i = num_lines; i < locale_buf_size_max; i++) 131 dst_localebuf[i] = NULL; 132 *using_locale = 1; 133 134 return (_LDP_LOADED); 135 136 bad_lbuf: 137 saverr = errno; 138 free(lbuf); 139 errno = saverr; 140 bad_locale: 141 saverr = errno; 142 (void) close(fd); 143 errno = saverr; 144 145 return (_LDP_ERROR); 146 } 147 148 static int 149 split_lines(char *p, const char *plim) 150 { 151 int i; 152 153 i = 0; 154 while (p < plim) { 155 if (*p == '\n') { 156 *p = '\0'; 157 i++; 158 } 159 p++; 160 } 161 return (i); 162 } 163