src/kauth/kaaux.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include <afs/param.h>
  12
  13 #include <roken.h>
  14
  15 #include <rx/xdr.h>
  16 #include <afs/kauth.h>
  17
  18 #define MAXBS   2048            /* try to avoid horrible allocs */
  19
  20 int
  21 xdr_ka_CBS(XDR * x, struct ka_CBS *abbs)
  22 {
  23     afs_int32 len;
  24     if (x->x_op == XDR_FREE) {
  25         free(abbs->SeqBody);
  26         return TRUE;
  27     }
  28
  29     if (x->x_op == XDR_ENCODE) {
  30         xdr_afs_int32(x, &abbs->SeqLen);
  31         xdr_opaque(x, abbs->SeqBody, abbs->SeqLen);
  32         return TRUE;
  33     } else {
  34         xdr_afs_int32(x, &len);
  35         if (len < 0 || len > MAXBS)
  36             return FALSE;
  37         if (!abbs->SeqBody)
  38             abbs->SeqBody = malloc(len);
  39         abbs->SeqLen = len;
  40         xdr_opaque(x, abbs->SeqBody, len);
  41         return TRUE;
  42     }
  43 }
  44
  45 int
  46 xdr_ka_BBS(XDR * x, struct ka_BBS *abbs)
  47 {
  48     afs_int32 maxLen, len;
  49     if (x->x_op == XDR_FREE) {
  50         free(abbs->SeqBody);
  51         return TRUE;
  52     }
  53
  54     if (x->x_op == XDR_ENCODE) {
  55         if (!xdr_afs_int32(x, &abbs->MaxSeqLen)
  56             || !xdr_afs_int32(x, &abbs->SeqLen)
  57             || !xdr_opaque(x, abbs->SeqBody, abbs->SeqLen))
  58             return FALSE;
  59         return TRUE;
  60     } else {
  61         if (!xdr_afs_int32(x, &maxLen) || !xdr_afs_int32(x, &len) || (len < 0)
  62             || (len > MAXBS) || (len > maxLen))
  63             return FALSE;
  64         if (!abbs->SeqBody)
  65             abbs->SeqBody = malloc(maxLen);
  66         abbs->MaxSeqLen = maxLen;
  67         abbs->SeqLen = len;
  68         if (!xdr_opaque(x, abbs->SeqBody, len))
  69             return FALSE;
  70         return TRUE;
  71     }
  72 }