xref: /freebsd/contrib/smbfs/lib/smb/kiconv.c (revision 02e9120893770924227138ba49df1edb3896112a)
1 /*
2  * Copyright (c) 2000-2001, Boris Popov
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  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *    This product includes software developed by Boris Popov.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $Id: kiconv.c,v 1.3 2001/08/22 03:31:36 bp Exp $
33  * $FreeBSD$
34  */
35 
36 #include <sys/types.h>
37 #include <sys/iconv.h>
38 #include <sys/sysctl.h>
39 #include <ctype.h>
40 #include <errno.h>
41 #include <string.h>
42 
43 #ifdef APPLE
44 #include <sys/types.h>
45 extern uid_t real_uid, eff_uid;
46 #endif
47 
48 int
49 kiconv_add_xlat_table(const char *to, const char *from, const u_char *table)
50 {
51 	struct iconv_add_in din;
52 	struct iconv_add_out dout;
53 	size_t olen;
54 
55 	if (strlen(from) >= ICONV_CSNMAXLEN || strlen(to) >= ICONV_CSNMAXLEN)
56 		return EINVAL;
57 	din.ia_version = ICONV_ADD_VER;
58 	strcpy(din.ia_converter, "xlat");
59 	strcpy(din.ia_from, from);
60 	strcpy(din.ia_to, to);
61 	din.ia_data = table;
62 	din.ia_datalen = 256;
63 	olen = sizeof(dout);
64 #ifdef APPLE
65         seteuid(eff_uid); /* restore setuid root briefly */
66 	if (sysctlbyname("net.smb.fs.iconv.add", &dout, &olen, &din, sizeof(din)) == -1) {
67         	seteuid(real_uid); /* and back to real user */
68 		return errno;
69 	}
70         seteuid(real_uid); /* and back to real user */
71 #else
72 	if (sysctlbyname("kern.iconv.add", &dout, &olen, &din, sizeof(din)) == -1)
73 		return errno;
74 #endif
75 	return 0;
76 }
77 
78