source/include/msdfs.h

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    MSDfs services for Samba
   5    Copyright (C) Shirish Kalele 2000
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 */
  22
  23 #ifndef _MSDFS_H
  24 #define _MSDFS_H
  25
  26 #define REFERRAL_TTL 600
  27
  28 /* Flags used in trans2 Get Referral reply */
  29 #define DFSREF_REFERRAL_SERVER 0x1
  30 #define DFSREF_STORAGE_SERVER  0x2
  31
  32 /* Referral sizes */
  33 #define VERSION2_REFERRAL_SIZE 0x16
  34 #define VERSION3_REFERRAL_SIZE 0x22
  35 #define REFERRAL_HEADER_SIZE 0x08
  36
  37 /* Maximum number of referrals for each Dfs volume */
  38 #define MAX_REFERRAL_COUNT   256
  39
  40 struct referral
  41 {
  42         pstring alternate_path; /* contains the path referred */
  43         uint32 proximity;
  44         uint32 ttl; /* how long should client cache referral */
  45 };
  46
  47 struct junction_map
  48 {
  49   pstring service_name;
  50   pstring volume_name;
  51   int referral_count;
  52   struct referral* referral_list;
  53 };
  54
  55 struct dfs_path
  56 {
  57         pstring hostname;
  58         pstring servicename;
  59         pstring reqpath;
  60 };
  61
  62 #define RESOLVE_DFSPATH(name, conn, inbuf, outbuf)              \
  63 { if ((SVAL(inbuf,smb_flg2) & FLAGS2_DFS_PATHNAMES) &&          \
  64       lp_host_msdfs() && lp_msdfs_root(SNUM(conn)) &&           \
  65       dfs_redirect(name,conn,False))                            \
  66              return ERROR_BOTH(NT_STATUS_PATH_NOT_COVERED,      \
  67                                ERRSRV, ERRbadpath);; }
  68
  69 #define RESOLVE_FINDFIRST_DFSPATH(name, conn, inbuf, outbuf)            \
  70 { if ( (SVAL(inbuf,smb_flg2) & FLAGS2_DFS_PATHNAMES) ||                 \
  71        ((get_remote_arch() == RA_WIN95) && lp_msdfs_root(SNUM(conn))) ) \
  72          if (lp_host_msdfs() && dfs_redirect(name,conn,True))           \
  73                  return ERROR_BOTH(NT_STATUS_PATH_NOT_COVERED,          \
  74                                    ERRSRV, ERRbadpath);; }
  75
  76
  77 #define init_dfsroot(conn, inbuf, outbuf)                       \
  78 { if (lp_msdfs_root(SNUM(conn)) && lp_host_msdfs()) {           \
  79         DEBUG(2,("Serving %s as a Dfs root\n",                  \
  80                  lp_servicename(SNUM(conn)) ));                 \
  81         SSVAL(outbuf, smb_vwv2, SMB_SHARE_IN_DFS                \
  82               | SVAL(outbuf, smb_vwv2));                        \
  83 } }
  84
  85 #endif /* _MSDFS_H */