1 /*
2 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
4 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include "lint.h"
30 #include "file64.h"
31 #include <sys/types.h>
32 #include <sys/stat.h>
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <limits.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <stdio.h>
40
41 #include "libc.h"
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,
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 /*
61 * Slurp the locale file into the cache.
62 */
63 namesize = strlen(name) + 1;
64
65 /* 'PathLocale' must be already set & checked. */
66
67 (void) snprintf(filename, sizeof (filename), "%s/%s/%s/LCL_DATA",
68 _PathLocale, name, category_filename);
69
70 if ((fd = open(filename, O_RDONLY)) < 0)
71 return (_LDP_ERROR);
72 if (fstat(fd, &st) != 0)
73 goto bad_locale;
74 if (st.st_size <= 0) {
75 errno = EINVAL;
76 goto bad_locale;
77 }
78 bufsize = namesize + st.st_size;
79 if ((lbuf = libc_malloc(bufsize)) == NULL) {
80 errno = ENOMEM;
81 goto bad_locale;
82 }
83 (void) strcpy(lbuf, name);
84 p = lbuf + namesize;
85 plim = p + st.st_size;
86 if (read(fd, p, (size_t)st.st_size) != st.st_size)
87 goto bad_lbuf;
88 /*
89 * Parse the locale file into localebuf.
90 */
91 if (plim[-1] != '\n') {
92 errno = EINVAL;
93 goto bad_lbuf;
94 }
95 num_lines = split_lines(p, plim);
96 if (num_lines >= locale_buf_size_max)
97 num_lines = locale_buf_size_max;
98 else if (num_lines >= locale_buf_size_min)
99 num_lines = locale_buf_size_min;
100 else {
101 errno = EINVAL;
102 goto bad_lbuf;
103 }
104 (void) close(fd);
105 /*
106 * Record the successful parse in the cache.
107 */
108 *locale_buf = lbuf;
109 for (p = *locale_buf, i = 0; i < num_lines; i++)
110 dst_localebuf[i] = (p += strlen(p) + 1);
111 for (i = num_lines; i < locale_buf_size_max; i++)
112 dst_localebuf[i] = NULL;
113
114 return (_LDP_LOADED);
115
116 bad_lbuf:
117 saverr = errno;
118 free(lbuf);
119 errno = saverr;
120 bad_locale:
121 saverr = errno;
122 (void) close(fd);
123 errno = saverr;
124
125 return (_LDP_ERROR);
126 }
127
128 static int
129 split_lines(char *p, const char *plim)
130 {
131 int i;
132
133 i = 0;
134 while (p < plim) {
135 if (*p == '\n') {
136 *p = '\0';
137 i++;
138 }
139 p++;
140 }
141 return (i);
142 }