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 "ldpart.h"
42 #include "setlocale.h"
43
44 static int split_lines(char *, const char *);
45
46 int
47 __part_load_locale(const char *name,
48 char **locale_buf, const char *category_filename,
49 int locale_buf_size_max, int locale_buf_size_min,
50 const char **dst_localebuf)
51 {
52 int saverr, fd, i, num_lines;
53 char *lbuf, *p;
54 const char *plim;
55 char filename[PATH_MAX];
56 struct stat st;
57 size_t namesize, bufsize;
58
59 /*
60 * Slurp the locale file into the cache.
61 */
62 namesize = strlen(name) + 1;
63
64 /* 'PathLocale' must be already set & checked. */
65
66 (void) snprintf(filename, sizeof (filename), "%s/%s/%s/LCL_DATA",
67 _PathLocale, name, category_filename);
68
69 if ((fd = open(filename, O_RDONLY)) < 0)
70 return (_LDP_ERROR);
71 if (fstat(fd, &st) != 0)
72 goto bad_locale;
73 if (st.st_size <= 0) {
74 errno = EINVAL;
75 goto bad_locale;
76 }
77 bufsize = namesize + st.st_size;
78 if ((lbuf = malloc(bufsize)) == NULL) {
79 errno = ENOMEM;
80 goto bad_locale;
81 }
82 (void) strcpy(lbuf, name);
83 p = lbuf + namesize;
84 plim = p + st.st_size;
85 if (read(fd, p, (size_t)st.st_size) != st.st_size)
86 goto bad_lbuf;
87 /*
88 * Parse the locale file into localebuf.
89 */
90 if (plim[-1] != '\n') {
91 errno = EINVAL;
92 goto bad_lbuf;
93 }
94 num_lines = split_lines(p, plim);
95 if (num_lines >= locale_buf_size_max)
96 num_lines = locale_buf_size_max;
97 else if (num_lines >= locale_buf_size_min)
98 num_lines = locale_buf_size_min;
99 else {
100 errno = EINVAL;
101 goto bad_lbuf;
102 }
103 (void) close(fd);
104 /*
105 * Record the successful parse in the cache.
106 */
107 *locale_buf = lbuf;
108 for (p = *locale_buf, i = 0; i < num_lines; i++)
109 dst_localebuf[i] = (p += strlen(p) + 1);
110 for (i = num_lines; i < locale_buf_size_max; i++)
111 dst_localebuf[i] = NULL;
112
113 return (_LDP_LOADED);
114
115 bad_lbuf:
116 saverr = errno;
117 free(lbuf);
118 errno = saverr;
119 bad_locale:
120 saverr = errno;
121 (void) close(fd);
122 errno = saverr;
123
124 return (_LDP_ERROR);
125 }
126
127 static int
128 split_lines(char *p, const char *plim)
129 {
130 int i;
131
132 i = 0;
133 while (p < plim) {
134 if (*p == '\n') {
135 *p = '\0';
136 i++;
137 }
138 p++;
139 }
140 return (i);
141 }