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 "file64.h" 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 #include <limits.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #include "ldpart.h" 44 #include "setlocale.h" 45 46 static int split_lines(char *, const char *); 47 48 int 49 __part_load_locale(const char *name, int *using_locale, 50 char **locale_buf, const char *category_filename, 51 int locale_buf_size_max, int locale_buf_size_min, 52 const char **dst_localebuf) 53 { 54 int saverr, fd, i, num_lines; 55 char *lbuf, *p; 56 const char *plim; 57 char filename[PATH_MAX]; 58 struct stat st; 59 size_t namesize, bufsize; 60 61 /* 'name' must be already checked. */ 62 if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) { 63 *using_locale = 0; 64 return (_LDP_CACHE); 65 } 66 67 /* 68 * If the locale name is the same as our cache, use the cache. 69 */ 70 if (*locale_buf != NULL && strcmp(name, *locale_buf) == 0) { 71 *using_locale = 1; 72 return (_LDP_CACHE); 73 } 74 75 /* 76 * Slurp the locale file into the cache. 77 */ 78 namesize = strlen(name) + 1; 79 80 /* 'PathLocale' must be already set & checked. */ 81 82 /* Range checking not needed, 'name' size is limited */ 83 (void) strcpy(filename, _PathLocale); 84 (void) strcat(filename, "/"); 85 (void) strcat(filename, name); 86 (void) strcat(filename, "/"); 87 (void) strcat(filename, category_filename); 88 if ((fd = open(filename, O_RDONLY)) < 0) 89 return (_LDP_ERROR); 90 if (fstat(fd, &st) != 0) 91 goto bad_locale; 92 if (st.st_size <= 0) { 93 errno = EINVAL; 94 goto bad_locale; 95 } 96 bufsize = namesize + st.st_size; 97 if ((lbuf = malloc(bufsize)) == NULL) { 98 errno = ENOMEM; 99 goto bad_locale; 100 } 101 (void) strcpy(lbuf, name); 102 p = lbuf + namesize; 103 plim = p + st.st_size; 104 if (read(fd, p, (size_t)st.st_size) != st.st_size) 105 goto bad_lbuf; 106 /* 107 * Parse the locale file into localebuf. 108 */ 109 if (plim[-1] != '\n') { 110 errno = EINVAL; 111 goto bad_lbuf; 112 } 113 num_lines = split_lines(p, plim); 114 if (num_lines >= locale_buf_size_max) 115 num_lines = locale_buf_size_max; 116 else if (num_lines >= locale_buf_size_min) 117 num_lines = locale_buf_size_min; 118 else { 119 errno = EINVAL; 120 goto bad_lbuf; 121 } 122 (void) close(fd); 123 /* 124 * Record the successful parse in the cache. 125 */ 126 if (*locale_buf != NULL) 127 free(*locale_buf); 128 *locale_buf = lbuf; 129 for (p = *locale_buf, i = 0; i < num_lines; i++) 130 dst_localebuf[i] = (p += strlen(p) + 1); 131 for (i = num_lines; i < locale_buf_size_max; i++) 132 dst_localebuf[i] = NULL; 133 *using_locale = 1; 134 135 return (_LDP_LOADED); 136 137 bad_lbuf: 138 saverr = errno; 139 free(lbuf); 140 errno = saverr; 141 bad_locale: 142 saverr = errno; 143 (void) close(fd); 144 errno = saverr; 145 146 return (_LDP_ERROR); 147 } 148 149 static int 150 split_lines(char *p, const char *plim) 151 { 152 int i; 153 154 i = 0; 155 while (p < plim) { 156 if (*p == '\n') { 157 *p = '\0'; 158 i++; 159 } 160 p++; 161 } 162 return (i); 163 } 164