1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD$
29 */
30
31 #include <sys/types.h>
32 #include <sys/iconv.h>
33 #include <sys/sysctl.h>
34
35 #include <ctype.h>
36 #include <errno.h>
37 #include <stdlib.h>
38 #include <string.h>
39
40 int
kiconv_lookupconv(const char * drvname)41 kiconv_lookupconv(const char *drvname)
42 {
43 size_t size;
44
45 if (sysctlbyname("kern.iconv.drvlist", NULL, &size, NULL, 0) == -1)
46 return (errno);
47 if (size > 0) {
48 char *drivers, *drvp;
49
50 drivers = malloc(size);
51 if (drivers == NULL)
52 return (ENOMEM);
53 if (sysctlbyname("kern.iconv.drvlist", drivers, &size, NULL, 0) == -1) {
54 free(drivers);
55 return (errno);
56 }
57 for (drvp = drivers; *drvp != '\0'; drvp += strlen(drvp) + 1)
58 if (strcmp(drvp, drvname) == 0) {
59 free(drivers);
60 return (0);
61 }
62 }
63 return (ENOENT);
64 }
65
66 int
kiconv_lookupcs(const char * tocode,const char * fromcode)67 kiconv_lookupcs(const char *tocode, const char *fromcode)
68 {
69 size_t i, size;
70 struct iconv_cspair_info *csi, *csip;
71
72 if (sysctlbyname("kern.iconv.cslist", NULL, &size, NULL, 0) == -1)
73 return (errno);
74 if (size > 0) {
75 csi = malloc(size);
76 if (csi == NULL)
77 return (ENOMEM);
78 if (sysctlbyname("kern.iconv.cslist", csi, &size, NULL, 0) == -1) {
79 free(csi);
80 return (errno);
81 }
82 for (i = 0, csip = csi; i < (size/sizeof(*csi)); i++, csip++){
83 if (strcmp(csip->cs_to, tocode) == 0 &&
84 strcmp(csip->cs_from, fromcode) == 0) {
85 free(csi);
86 return (0);
87 }
88 }
89 }
90 return (ENOENT);
91 }
92