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msdfs.h

/* 
   Unix SMB/Netbios implementation.
   Version 3.0
   MSDfs services for Samba
   Copyright (C) Shirish Kalele 2000

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   
*/

#ifndef _MSDFS_H
#define _MSDFS_H

#define REFERRAL_TTL 600

/* Flags used in trans2 Get Referral reply */
#define DFSREF_REFERRAL_SERVER 0x1
#define DFSREF_STORAGE_SERVER  0x2

/* Referral sizes */
#define VERSION2_REFERRAL_SIZE 0x16
#define VERSION3_REFERRAL_SIZE 0x22
#define REFERRAL_HEADER_SIZE 0x08

/* Maximum number of referrals for each Dfs volume */
#define MAX_REFERRAL_COUNT   256

struct referral
{
      pstring alternate_path; /* contains the path referred */
      uint32 proximity;
      uint32 ttl; /* how long should client cache referral */
};

struct junction_map
{
  pstring service_name;
  pstring volume_name;
  int referral_count;
  struct referral* referral_list;
};

struct dfs_path
{
      pstring hostname;
      pstring servicename;
      pstring reqpath;
};

#ifdef WITH_MSDFS

#define RESOLVE_DFSPATH(name, conn, inbuf, outbuf)                \
{ if ((SVAL(inbuf,smb_flg2) & FLAGS2_DFS_PATHNAMES) &&            \
      lp_host_msdfs() && lp_msdfs_root(SNUM(conn)) &&       \
      dfs_redirect(name,conn,False))                        \
             return(dfs_path_error(inbuf,outbuf)); }

#define RESOLVE_FINDFIRST_DFSPATH(name, conn, inbuf, outbuf)            \
{ if ( (SVAL(inbuf,smb_flg2) & FLAGS2_DFS_PATHNAMES) ||                 \
       ((get_remote_arch() == RA_WIN95) && lp_msdfs_root(SNUM(conn))) ) \
       if (lp_host_msdfs() && dfs_redirect(name,conn,True))             \
               return(dfs_path_error(inbuf,outbuf)); }
 
#define init_dfsroot(conn, inbuf, outbuf)                         \
{ if (lp_msdfs_root(SNUM(conn)) && lp_host_msdfs()) {             \
        DEBUG(2,("Serving %s as a Dfs root\n",              \
             lp_servicename(SNUM(conn)) ));           \
      SSVAL(outbuf, smb_vwv2, SMB_SHARE_IN_DFS        \
            | SVAL(outbuf, smb_vwv2));                \
} }

#else
/* Stub macros */
#define RESOLVE_DFSPATH(name, conn, inbuf, outbuf) ;
#define RESOLVE_FINDFIRST_DFSPATH(name, conn, inbuf, outbuf) ;
#define init_dfsroot(conn, inbuf, outbuf) ;

#endif

#endif /* _MSDFS_H */

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