1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005 Ryuichiro Imura
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 <sys/types.h>
30 #include <sys/iconv.h>
31 #include <sys/sysctl.h>
32
33 #include <ctype.h>
34 #include <errno.h>
35 #include <stdlib.h>
36 #include <string.h>
37
38 int
kiconv_lookupconv(const char * drvname)39 kiconv_lookupconv(const char *drvname)
40 {
41 size_t size;
42
43 if (sysctlbyname("kern.iconv.drvlist", NULL, &size, NULL, 0) == -1)
44 return (errno);
45 if (size > 0) {
46 char *drivers, *drvp;
47
48 drivers = malloc(size);
49 if (drivers == NULL)
50 return (ENOMEM);
51 if (sysctlbyname("kern.iconv.drvlist", drivers, &size, NULL, 0) == -1) {
52 free(drivers);
53 return (errno);
54 }
55 for (drvp = drivers; *drvp != '\0'; drvp += strlen(drvp) + 1)
56 if (strcmp(drvp, drvname) == 0) {
57 free(drivers);
58 return (0);
59 }
60 free(drivers);
61 }
62 return (ENOENT);
63 }
64
65 int
kiconv_lookupcs(const char * tocode,const char * fromcode)66 kiconv_lookupcs(const char *tocode, const char *fromcode)
67 {
68 size_t i, size;
69 struct iconv_cspair_info *csi, *csip;
70
71 if (sysctlbyname("kern.iconv.cslist", NULL, &size, NULL, 0) == -1)
72 return (errno);
73 if (size > 0) {
74 csi = malloc(size);
75 if (csi == NULL)
76 return (ENOMEM);
77 if (sysctlbyname("kern.iconv.cslist", csi, &size, NULL, 0) == -1) {
78 free(csi);
79 return (errno);
80 }
81 for (i = 0, csip = csi; i < (size/sizeof(*csi)); i++, csip++){
82 if (strcmp(csip->cs_to, tocode) == 0 &&
83 strcmp(csip->cs_from, fromcode) == 0) {
84 free(csi);
85 return (0);
86 }
87 }
88 free(csi);
89 }
90 return (ENOENT);
91 }
92