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  *
   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  * Character conversion routines
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/9.0/sys/netncp/ncp_nls.c 206361 2010-04-07 16:50:38Z joel $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/errno.h>
   34 #include <sys/systm.h>
   35 
   36 #include <netncp/ncp.h>
   37 #include <netncp/ncp_nls.h>
   38 
   39 /*
   40  * 0 - character disallowed in NetWare file name.
   41  */
   42 static u_char ncp_u2n[256] = {
   43         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   44         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   45         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
   46         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   47         0x20, 0x21, 0x00, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
   48         0x28, 0x29, 0x00, 0x00, 0x00, 0x2d, 0x2e, 0x00,
   49         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
   50         0x38, 0x39, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00,
   51         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40 */
   52         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
   53         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50 */
   54         0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x5e, 0x5f,
   55         0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
   56         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
   57         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
   58         0x78, 0x79, 0x7a, 0x7b, 0x00, 0x7d, 0x7e, 0x00,
   59         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
   60         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
   61         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
   62         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
   63         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
   64         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
   65         0xb0, 0xbf, 0xbf, 0xbf, 0xbf, 0xb1, 0xb2, 0xb7, /* 0xb0 */
   66         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
   67         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
   68         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
   69         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
   70         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
   71         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
   72         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
   73         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
   74         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
   75 };
   76 
   77 static u_char ncp_n2u[256] = {
   78         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, /* 0x00 */
   79         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
   80         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, /* 0x10 */
   81         0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
   82         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
   83         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
   84         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
   85         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x5f,
   86         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40 */
   87         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
   88         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50 */
   89         0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
   90         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
   91         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
   92         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
   93         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
   94         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
   95         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
   96         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
   97         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
   98         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
   99         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  100         0xb0, 0xbf, 0xbf, 0xbf, 0xbf, 0xb1, 0xb2, 0xb7, /* 0xb0 */
  101         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  102         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  103         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  104         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  105         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  106         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  107         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  108         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  109         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  110 };
  111 
  112 static u_char ncp_u2l[256] = {
  113         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00 */
  114         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  115         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10 */
  116         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  117         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20 */
  118         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  119         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30 */
  120         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  121         0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40 */
  122         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  123         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50 */
  124         0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  125         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60 */
  126         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  127         0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70 */
  128         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
  129         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
  130         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  131         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
  132         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  133         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
  134         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  135         0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0 */
  136         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  137         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  138         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  139         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  140         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  141         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  142         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  143         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  144         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  145 };
  146 
  147 static u_char ncp_l2u[256] = {
  148         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00 */
  149         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  150         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 10-17 */
  151         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  152         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 20-27 */
  153         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  154         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 30-37 */
  155         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  156         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 40-47 */
  157         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  158         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 50-57 */
  159         0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  160         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 60-67 */
  161         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  162         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 70-77 */
  163         0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
  164         0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80 */
  165         0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  166         0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90 */
  167         0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  168         0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0 */
  169         0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  170         0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0 */
  171         0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  172         0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0 */
  173         0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  174         0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0 */
  175         0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
  176         0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0 */
  177         0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  178         0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0 */
  179         0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
  180 };
  181 
  182 struct ncp_nlstables ncp_defnls = {
  183         ncp_u2l, ncp_l2u, ncp_n2u, ncp_u2n, 0
  184 };
  185 
  186 void ncp_str_upper(char *name) {
  187         while (*name) {
  188                 *name = ncp_defnls.to_upper[(u_char)*name];
  189                 name++;
  190         }
  191 }
  192 
  193 void ncp_str_lower(char *name) {
  194         while (*name) {
  195                 *name = ncp_defnls.to_lower[(u_char)*name];
  196                 name++;
  197         }
  198 }
  199 
  200 /*
  201  * Check if pathname is valid under given conditions.
  202  */
  203 int
  204 ncp_pathcheck(char *s, int len, struct ncp_nlstables *nt, int strict) {
  205         u_char *tbl = NULL,  sc;
  206         int opt = nt->opt;
  207 
  208         if (opt & (NWHP_UPPER | NWHP_LOWER))
  209                 tbl = (opt & NWHP_UPPER) ? nt->to_upper : nt->to_lower;
  210         if ((opt & NWHP_DOS) == 0) {
  211                 while (len--) {
  212                         sc = (u_char)*(s++);
  213                         if (nt->u2n[sc] == 0)   /* illegal char */
  214                                 return EINVAL;
  215                         if (tbl && strict && tbl[sc] != sc)
  216                                 return EINVAL;
  217                 }
  218                 return 0;
  219         }
  220         while (len--) {
  221                 sc = (u_char)*(s++);
  222                 if (nt->u2n[sc] == 0)   /* illegal char */
  223                         return EINVAL;
  224                 if (sc == ' ') return EINVAL;
  225                 if (tbl && strict && tbl[sc] != sc) {
  226                         return EINVAL;
  227                 }
  228         }
  229         return 0;
  230 }
  231 /*
  232  * Convert name from Unix to NetWare representation.
  233  * XXX: it should be complementary with path2unix, but for now
  234  * leave it as is.
  235  */
  236 void
  237 ncp_pathcopy(const char *src, char *dst, int len, struct ncp_nlstables *nt)
  238 {
  239         int     donls;
  240         u_char  c;
  241 /*      char *d = dst, *s = src;*/
  242 
  243         if (nt == NULL) {
  244                 ovbcopy(src, dst, len);
  245                 return;
  246         }
  247         donls = (nt->opt & NWHP_NLS);
  248         if ((nt->opt & (NWHP_UPPER | NWHP_LOWER)) == 0) {
  249                 while (len--) {
  250                         *dst = donls ? nt->u2n[(u_char)*src] : *src;
  251                         dst++;
  252                         src++;
  253                 }
  254         } else if (nt->opt & NWHP_DOS) {
  255                 while (len--) {
  256                     c = nt->to_upper[(u_char)*src];
  257                     *dst = donls ? nt->u2n[c] : c;
  258                     dst++;
  259                     src++;
  260                 }
  261                 return;
  262         } else {        /* probably incorrect... */
  263                 while (len--) {
  264                         *dst = donls ? nt->u2n[(u_char)*src] : *src;
  265                         dst++;
  266                         src++;
  267                 }
  268         }
  269 /*      printf("fromux: %s:%s\n", s, d);*/
  270 }
  271 
  272 /*
  273  * Convert NetWare filename to Unix with optional conversions
  274  */
  275 void
  276 ncp_path2unix(char *src, char *dst, int len, struct ncp_nlstables *nt) {
  277         int     donls;
  278         u_char  c, *tbl;
  279 /*      char *d = dst, *s = src;*/
  280 
  281 /*      printf("toux(%02x): %s:",nt->opt, s);*/
  282         if (nt == NULL) {
  283                 ovbcopy(src, dst, len);
  284                 return;
  285         }
  286         donls = (nt->opt & NWHP_NLS);
  287         if ((nt->opt & (NWHP_UPPER | NWHP_LOWER)) == 0) {
  288                 while (len--) {
  289                         c = *src;
  290                         *dst = donls ? nt->n2u[c] : c;
  291                         dst++;
  292                         src++;
  293                 }
  294                 return;
  295         }
  296         tbl = (nt->opt & NWHP_LOWER) ? nt->to_lower : nt->to_upper;
  297         while (len--) {
  298                 c = *src;
  299                 *dst = tbl[donls ? nt->n2u[c] : c];
  300                 dst++;
  301                 src++;
  302         }
  303 /*      printf("%s\n", d);*/
  304 }

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