The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netncp/ncp_nls.c

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    1 /*
    2  * Copyright (c) 1999, 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  * Character conversion routines
   33  *
   34  * $FreeBSD: releng/5.0/sys/netncp/ncp_nls.c 74060 2001-03-10 05:24:45Z bp $
   35  */
   36 #include <sys/param.h>
   37 #include <sys/errno.h>
   38 
   39 #include <netncp/ncp.h>
   40 #include <netncp/ncp_nls.h>
   41 
   42 /*
   43  * 0 - character disallowed in NetWare file name.
   44  */
   45 static u_char ncp_u2n[256] = {
   46         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   47         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   48         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
   49         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   50         0x20, 0x21, 0x00, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
   51         0x28, 0x29, 0x00, 0x00, 0x00, 0x2d, 0x2e, 0x00,
   52         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
   53         0x38, 0x39, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00,
   54         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40 */
   55         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
   56         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50 */
   57         0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x5e, 0x5f,
   58         0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
   59         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
   60         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
   61         0x78, 0x79, 0x7a, 0x7b, 0x00, 0x7d, 0x7e, 0x00,
   62         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
   63         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
   64         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
   65         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
   66         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
   67         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
   68         0xb0, 0xbf, 0xbf, 0xbf, 0xbf, 0xb1, 0xb2, 0xb7, /* 0xb0 */
   69         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
   70         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
   71         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
   72         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
   73         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
   74         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
   75         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
   76         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
   77         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
   78 };
   79 
   80 static u_char ncp_n2u[256] = {
   81         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, /* 0x00 */
   82         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
   83         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, /* 0x10 */
   84         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
   85         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
   86         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
   87         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
   88         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x5f,
   89         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40 */
   90         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
   91         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50 */
   92         0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
   93         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
   94         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
   95         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
   96         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
   97         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
   98         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
   99         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
  100         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  101         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
  102         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  103         0xb0, 0xbf, 0xbf, 0xbf, 0xbf, 0xb1, 0xb2, 0xb7, /* 0xb0 */
  104         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  105         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  106         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  107         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  108         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  109         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  110         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  111         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  112         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  113 };
  114 
  115 static u_char ncp_u2l[256] = {
  116         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00 */
  117         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  118         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10 */
  119         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  120         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
  121         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  122         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
  123         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  124         0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40 */
  125         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  126         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50 */
  127         0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  128         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
  129         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  130         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
  131         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
  132         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
  133         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  134         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
  135         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  136         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
  137         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  138         0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0 */
  139         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  140         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  141         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  142         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  143         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  144         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  145         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  146         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  147         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  148 };
  149 
  150 static u_char ncp_l2u[256] = {
  151         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00 */
  152         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  153         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 10-17 */
  154         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  155         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */
  156         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  157         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */
  158         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  159         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 40-47 */
  160         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  161         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 50-57 */
  162         0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  163         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 60-67 */
  164         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  165         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 70-77 */
  166         0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
  167         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
  168         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  169         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
  170         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  171         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
  172         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  173         0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0 */
  174         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  175         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  176         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  177         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  178         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  179         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  180         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  181         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  182         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  183 };
  184 
  185 struct ncp_nlstables ncp_defnls = {
  186         ncp_u2l, ncp_l2u, ncp_n2u, ncp_u2n, 0
  187 };
  188 
  189 void ncp_str_upper(char *name) {
  190         while (*name) {
  191                 *name = ncp_defnls.to_upper[(u_char)*name];
  192                 name++;
  193         }
  194 }
  195 
  196 void ncp_str_lower(char *name) {
  197         while (*name) {
  198                 *name = ncp_defnls.to_lower[(u_char)*name];
  199                 name++;
  200         }
  201 }
  202 
  203 /*
  204  * Check if pathname is valid under given conditions.
  205  */
  206 int
  207 ncp_pathcheck(char *s, int len, struct ncp_nlstables *nt, int strict) {
  208         u_char *tbl = NULL,  sc;
  209         int opt = nt->opt;
  210 
  211         if (opt & (NWHP_UPPER | NWHP_LOWER))
  212                 tbl = (opt & NWHP_UPPER) ? nt->to_upper : nt->to_lower;
  213         if ((opt & NWHP_DOS) == 0) {
  214                 while (len--) {
  215                         sc = (u_char)*(s++);
  216                         if (nt->u2n[sc] == 0)   /* illegal char */
  217                                 return EINVAL;
  218                         if (tbl && strict && tbl[sc] != sc)
  219                                 return EINVAL;
  220                 }
  221                 return 0;
  222         }
  223         while (len--) {
  224                 sc = (u_char)*(s++);
  225                 if (nt->u2n[sc] == 0)   /* illegal char */
  226                         return EINVAL;
  227                 if (sc == ' ') return EINVAL;
  228                 if (tbl && strict && tbl[sc] != sc) {
  229                         return EINVAL;
  230                 }
  231         }
  232         return 0;
  233 }
  234 /*
  235  * Convert name from Unix to NetWare representation.
  236  * XXX: it should be complementary with path2unix, but for now
  237  * leave it as is.
  238  */
  239 void
  240 ncp_pathcopy(const char *src, char *dst, int len, struct ncp_nlstables *nt)
  241 {
  242         int     donls;
  243         u_char  c;
  244 /*      char *d = dst, *s = src;*/
  245 
  246         donls = (nt && (nt->opt & NWHP_NLS));
  247         if ((nt->opt & (NWHP_UPPER | NWHP_LOWER)) == 0) {
  248                 while (len--) {
  249                         *dst = donls ? nt->u2n[(u_char)*src] : *src;
  250                         dst++;
  251                         src++;
  252                 }
  253         } else if (nt->opt & NWHP_DOS) {
  254                 while (len--) {
  255                     c = nt->to_upper[(u_char)*src];
  256                     *dst = donls ? nt->u2n[c] : c;
  257                     dst++;
  258                     src++;
  259                 }
  260                 return;
  261         } else {        /* probably incorrect... */
  262                 while (len--) {
  263                         *dst = donls ? nt->u2n[(u_char)*src] : *src;
  264                         dst++;
  265                         src++;
  266                 }
  267         }
  268 /*      printf("fromux: %s:%s\n", s, d);*/
  269 }
  270 
  271 /*
  272  * Convert NetWare filename to Unix with optional conversions
  273  */
  274 void
  275 ncp_path2unix(char *src, char *dst, int len, struct ncp_nlstables *nt) {
  276         int     donls;
  277         u_char  c, *tbl;
  278 /*      char *d = dst, *s = src;*/
  279 
  280 /*      printf("toux(%02x): %s:",nt->opt, s);*/
  281         donls = (nt && (nt->opt & NWHP_NLS));
  282         if ((nt->opt & (NWHP_UPPER | NWHP_LOWER)) == 0) {
  283                 while (len--) {
  284                         c = *src;
  285                         *dst = donls ? nt->n2u[c] : c;
  286                         dst++;
  287                         src++;
  288                 }
  289                 return;
  290         }
  291         tbl = (nt->opt & NWHP_LOWER) ? nt->to_lower : nt->to_upper;
  292         while (len--) {
  293                 c = *src;
  294                 *dst = tbl[donls ? nt->n2u[c] : c];
  295                 dst++;
  296                 src++;
  297         }
  298 /*      printf("%s\n", d);*/
  299 }

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