kiconv_sysctl.c revision 331722 
1/*-
2 * Copyright (c) 2005 Ryuichiro Imura
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/lib/libkiconv/kiconv_sysctl.c 331722 2018-03-29 02:50:57Z eadler $
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
38int
39kiconv_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	}
61	return (ENOENT);
62}
63
64int
65kiconv_lookupcs(const char *tocode, const char *fromcode)
66{
67	size_t i, size;
68	struct iconv_cspair_info *csi, *csip;
69
70	if (sysctlbyname("kern.iconv.cslist", NULL, &size, NULL, 0) == -1)
71		return (errno);
72	if (size > 0) {
73		csi = malloc(size);
74		if (csi == NULL)
75			return (ENOMEM);
76		if (sysctlbyname("kern.iconv.cslist", csi, &size, NULL, 0) == -1) {
77			free(csi);
78			return (errno);
79		}
80		for (i = 0, csip = csi; i < (size/sizeof(*csi)); i++, csip++){
81			if (strcmp(csip->cs_to, tocode) == 0 &&
82			    strcmp(csip->cs_from, fromcode) == 0) {
83				free(csi);
84				return (0);
85			}
86		}
87	}
88	return (ENOENT);
89}
90