dist/smbfs/lib/smb/kiconv.c

   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  * from: Id: kiconv.c,v 1.3 2001/08/22 03:31:36 bp Exp
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __RCSID("$NetBSD$");
  37
  38 #include <sys/param.h>
  39 #include <sys/types.h>
  40 #include <sys/sysctl.h>
  41 #include <ctype.h>
  42 #include <errno.h>
  43 #include <netsmb/iconv.h>
  44
  45 #ifdef APPLE
  46 #include <sys/types.h>
  47 extern uid_t real_uid, eff_uid;
  48 #endif
  49
  50 int
  51 kiconv_add_xlat_table(const char *to, const char *from, const u_char *table)
  52 {
  53 #ifdef __NetBSD__
  54         /* XXX not supported on NetBSD (yet) */
  55         return (0);
  56 #else
  57         struct iconv_add_in din;
  58         struct iconv_add_out dout;
  59         int olen;
  60
  61         if (strlen(from) > ICONV_CSNMAXLEN || strlen(to) > ICONV_CSNMAXLEN)
  62                 return EINVAL;
  63         din.ia_version = ICONV_ADD_VER;
  64         strcpy(din.ia_converter, "xlat");
  65         strcpy(din.ia_from, from);
  66         strcpy(din.ia_to, to);
  67         din.ia_data = table;
  68         din.ia_datalen = 256;
  69         olen = sizeof(dout);
  70 #ifdef APPLE
  71         seteuid(eff_uid); /* restore setuid root briefly */
  72         if (sysctlbyname("net.smb.fs.iconv.add", &dout, &olen, &din, sizeof(din)) == -1) {
  73                 seteuid(real_uid); /* and back to real user */
  74                 return errno;
  75         }
  76         seteuid(real_uid); /* and back to real user */
  77 #else
  78         if (sysctlbyname("kern.iconv.add", &dout, &olen, &din, sizeof(din)) == -1)
  79                 return errno;
  80 #endif
  81         return 0;
  82 #endif
  83 }
  84