1 /* 2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 3 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include "lint.h" 29 #include "file64.h" 30 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <errno.h> 33 #include <fcntl.h> 34 #include <limits.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 #include <stdio.h> 39 40 #include "ldpart.h" 41 #include "setlocale.h" 42 43 static int split_lines(char *, const char *); 44 45 int 46 __part_load_locale(const char *name, int *using_locale, 47 char **locale_buf, const char *category_filename, 48 int locale_buf_size_max, int locale_buf_size_min, 49 const char **dst_localebuf) 50 { 51 int saverr, fd, i, num_lines; 52 char *lbuf, *p; 53 const char *plim; 54 char filename[PATH_MAX]; 55 struct stat st; 56 size_t namesize, bufsize; 57 58 /* 'name' must be already checked. */ 59 if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) { 60 *using_locale = 0; 61 return (_LDP_CACHE); 62 } 63 64 /* 65 * If the locale name is the same as our cache, use the cache. 66 */ 67 if (*locale_buf != NULL && strcmp(name, *locale_buf) == 0) { 68 *using_locale = 1; 69 return (_LDP_CACHE); 70 } 71 72 /* 73 * Slurp the locale file into the cache. 74 */ 75 namesize = strlen(name) + 1; 76 77 /* 'PathLocale' must be already set & checked. */ 78 79 (void) snprintf(filename, sizeof (filename), "%s/%s/%s/LCL_DATA", 80 _PathLocale, name, category_filename); 81 82 if ((fd = open(filename, O_RDONLY)) < 0) 83 return (_LDP_ERROR); 84 if (fstat(fd, &st) != 0) 85 goto bad_locale; 86 if (st.st_size <= 0) { 87 errno = EINVAL; 88 goto bad_locale; 89 } 90 bufsize = namesize + st.st_size; 91 if ((lbuf = malloc(bufsize)) == NULL) { 92 errno = ENOMEM; 93 goto bad_locale; 94 } 95 (void) strcpy(lbuf, name); 96 p = lbuf + namesize; 97 plim = p + st.st_size; 98 if (read(fd, p, (size_t)st.st_size) != st.st_size) 99 goto bad_lbuf; 100 /* 101 * Parse the locale file into localebuf. 102 */ 103 if (plim[-1] != '\n') { 104 errno = EINVAL; 105 goto bad_lbuf; 106 } 107 num_lines = split_lines(p, plim); 108 if (num_lines >= locale_buf_size_max) 109 num_lines = locale_buf_size_max; 110 else if (num_lines >= locale_buf_size_min) 111 num_lines = locale_buf_size_min; 112 else { 113 errno = EINVAL; 114 goto bad_lbuf; 115 } 116 (void) close(fd); 117 /* 118 * Record the successful parse in the cache. 119 */ 120 if (*locale_buf != NULL) 121 free(*locale_buf); 122 *locale_buf = lbuf; 123 for (p = *locale_buf, i = 0; i < num_lines; i++) 124 dst_localebuf[i] = (p += strlen(p) + 1); 125 for (i = num_lines; i < locale_buf_size_max; i++) 126 dst_localebuf[i] = NULL; 127 *using_locale = 1; 128 129 return (_LDP_LOADED); 130 131 bad_lbuf: 132 saverr = errno; 133 free(lbuf); 134 errno = saverr; 135 bad_locale: 136 saverr = errno; 137 (void) close(fd); 138 errno = saverr; 139 140 return (_LDP_ERROR); 141 } 142 143 static int 144 split_lines(char *p, const char *plim) 145 { 146 int i; 147 148 i = 0; 149 while (p < plim) { 150 if (*p == '\n') { 151 *p = '\0'; 152 i++; 153 } 154 p++; 155 } 156 return (i); 157 } 158