The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kgssapi/gssd_prot.c

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    1 /*-
    2  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
    3  * Authors: Doug Rabson <dfr@rabson.org>
    4  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/11.2/sys/kgssapi/gssd_prot.c 298655 2016-04-26 18:11:45Z cem $");
   30 
   31 #ifdef _KERNEL
   32 #include <sys/malloc.h>
   33 #else
   34 #include <stdlib.h>
   35 #include <string.h>
   36 #endif
   37 
   38 #include <rpc/rpc.h>
   39 #include <rpc/rpc_com.h>
   40 
   41 #include "gssd.h"
   42 
   43 bool_t
   44 xdr_gss_buffer_desc(XDR *xdrs, gss_buffer_desc *buf)
   45 {
   46         char *val;
   47         u_int len;
   48 
   49         len = buf->length;
   50         val = buf->value;
   51         if (!xdr_bytes(xdrs, &val, &len, ~0))
   52                 return (FALSE);
   53         buf->length = len;
   54         buf->value = val;
   55 
   56         return (TRUE);
   57 }
   58 
   59 bool_t
   60 xdr_gss_OID_desc(XDR *xdrs, gss_OID_desc *oid)
   61 {
   62         char *val;
   63         u_int len;
   64 
   65         len = oid->length;
   66         val = oid->elements;
   67         if (!xdr_bytes(xdrs, &val, &len, ~0))
   68                 return (FALSE);
   69         oid->length = len;
   70         oid->elements = val;
   71 
   72         return (TRUE);
   73 }
   74 
   75 bool_t
   76 xdr_gss_OID(XDR *xdrs, gss_OID *oidp)
   77 {
   78         gss_OID oid;
   79         bool_t is_null;
   80 
   81         switch (xdrs->x_op) {
   82         case XDR_ENCODE:
   83                 oid = *oidp;
   84                 if (oid) {
   85                         is_null = FALSE;
   86                         if (!xdr_bool(xdrs, &is_null)
   87                             || !xdr_gss_OID_desc(xdrs, oid))
   88                                 return (FALSE);
   89                 } else {
   90                         is_null = TRUE;
   91                         if (!xdr_bool(xdrs, &is_null))
   92                                 return (FALSE);
   93                 }
   94                 break;
   95 
   96         case XDR_DECODE:
   97                 if (!xdr_bool(xdrs, &is_null))
   98                         return (FALSE);
   99                 if (is_null) {
  100                         *oidp = GSS_C_NO_OID;
  101                 } else {
  102                         oid = mem_alloc(sizeof(gss_OID_desc));
  103                         memset(oid, 0, sizeof(*oid));
  104                         if (!xdr_gss_OID_desc(xdrs, oid)) {
  105                                 mem_free(oid, sizeof(gss_OID_desc));
  106                                 return (FALSE);
  107                         }
  108                         *oidp = oid;
  109                 }
  110                 break;
  111 
  112         case XDR_FREE:
  113                 oid = *oidp;
  114                 if (oid) {
  115                         xdr_gss_OID_desc(xdrs, oid);
  116                         mem_free(oid, sizeof(gss_OID_desc));
  117                 }
  118         }
  119 
  120         return (TRUE);
  121 }
  122 
  123 bool_t
  124 xdr_gss_OID_set_desc(XDR *xdrs, gss_OID_set_desc *set)
  125 {
  126         caddr_t addr;
  127         u_int len;
  128 
  129         len = set->count;
  130         addr = (caddr_t) set->elements;
  131         if (!xdr_array(xdrs, &addr, &len, ~0, sizeof(gss_OID_desc),
  132                 (xdrproc_t) xdr_gss_OID_desc))
  133                 return (FALSE);
  134         set->count = len;
  135         set->elements = (gss_OID) addr;
  136 
  137         return (TRUE);
  138 }
  139 
  140 bool_t
  141 xdr_gss_OID_set(XDR *xdrs, gss_OID_set *setp)
  142 {
  143         gss_OID_set set;
  144         bool_t is_null;
  145 
  146         switch (xdrs->x_op) {
  147         case XDR_ENCODE:
  148                 set = *setp;
  149                 if (set) {
  150                         is_null = FALSE;
  151                         if (!xdr_bool(xdrs, &is_null)
  152                             || !xdr_gss_OID_set_desc(xdrs, set))
  153                                 return (FALSE);
  154                 } else {
  155                         is_null = TRUE;
  156                         if (!xdr_bool(xdrs, &is_null))
  157                                 return (FALSE);
  158                 }
  159                 break;
  160 
  161         case XDR_DECODE:
  162                 if (!xdr_bool(xdrs, &is_null))
  163                         return (FALSE);
  164                 if (is_null) {
  165                         *setp = GSS_C_NO_OID_SET;
  166                 } else {
  167                         set = mem_alloc(sizeof(gss_OID_set_desc));
  168                         memset(set, 0, sizeof(*set));
  169                         if (!xdr_gss_OID_set_desc(xdrs, set)) {
  170                                 mem_free(set, sizeof(gss_OID_set_desc));
  171                                 return (FALSE);
  172                         }
  173                         *setp = set;
  174                 }
  175                 break;
  176 
  177         case XDR_FREE:
  178                 set = *setp;
  179                 if (set) {
  180                         xdr_gss_OID_set_desc(xdrs, set);
  181                         mem_free(set, sizeof(gss_OID_set_desc));
  182                 }
  183         }
  184 
  185         return (TRUE);
  186 }
  187 
  188 bool_t
  189 xdr_gss_channel_bindings_t(XDR *xdrs, gss_channel_bindings_t *chp)
  190 {
  191         gss_channel_bindings_t ch;
  192         bool_t is_null;
  193 
  194         switch (xdrs->x_op) {
  195         case XDR_ENCODE:
  196                 ch = *chp;
  197                 if (ch) {
  198                         is_null = FALSE;
  199                         if (!xdr_bool(xdrs, &is_null)
  200                             || !xdr_uint32_t(xdrs, &ch->initiator_addrtype)
  201                             || !xdr_gss_buffer_desc(xdrs,
  202                                 &ch->initiator_address)
  203                             || !xdr_uint32_t(xdrs, &ch->acceptor_addrtype)
  204                             || !xdr_gss_buffer_desc(xdrs,
  205                                 &ch->acceptor_address)
  206                             || !xdr_gss_buffer_desc(xdrs,
  207                                 &ch->application_data))
  208                                 return (FALSE);
  209                 } else {
  210                         is_null = TRUE;
  211                         if (!xdr_bool(xdrs, &is_null))
  212                                 return (FALSE);
  213                 }
  214                 break;
  215 
  216         case XDR_DECODE:
  217                 if (!xdr_bool(xdrs, &is_null))
  218                         return (FALSE);
  219                 if (is_null) {
  220                         *chp = GSS_C_NO_CHANNEL_BINDINGS;
  221                 } else {
  222                         ch = mem_alloc(sizeof(*ch));
  223                         memset(ch, 0, sizeof(*ch));
  224                         if (!xdr_uint32_t(xdrs, &ch->initiator_addrtype)
  225                             || !xdr_gss_buffer_desc(xdrs,
  226                                 &ch->initiator_address)
  227                             || !xdr_uint32_t(xdrs, &ch->acceptor_addrtype)
  228                             || !xdr_gss_buffer_desc(xdrs,
  229                                 &ch->acceptor_address)
  230                             || !xdr_gss_buffer_desc(xdrs,
  231                                 &ch->application_data)) {
  232                                 mem_free(ch, sizeof(*ch));
  233                                 return (FALSE);
  234                         }
  235                         *chp = ch;
  236                 }
  237                 break;
  238 
  239         case XDR_FREE:
  240                 ch = *chp;
  241                 if (ch) {
  242                         xdr_gss_buffer_desc(xdrs, &ch->initiator_address);
  243                         xdr_gss_buffer_desc(xdrs, &ch->acceptor_address);
  244                         xdr_gss_buffer_desc(xdrs, &ch->application_data);
  245                         mem_free(ch, sizeof(*ch));
  246                 }
  247         }
  248 
  249         return (TRUE);
  250 }

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