lib/param/loadparm_server_role.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Parameter loading functions
   4    Copyright (C) Karl Auer 1993-1998
   5
   6    Largely re-written by Andrew Tridgell, September 1994
   7
   8    Copyright (C) Simo Sorce 2001
   9    Copyright (C) Alexander Bokovoy 2002
  10    Copyright (C) Stefan (metze) Metzmacher 2002
  11    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
  12    Copyright (C) Michael Adam 2008
  13    Copyright (C) Andrew Bartlett 2010
  14
  15    This program is free software; you can redistribute it and/or modify
  16    it under the terms of the GNU General Public License as published by
  17    the Free Software Foundation; either version 3 of the License, or
  18    (at your option) any later version.
  19
  20    This program is distributed in the hope that it will be useful,
  21    but WITHOUT ANY WARRANTY; without even the implied warranty of
  22    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23    GNU General Public License for more details.
  24
  25    You should have received a copy of the GNU General Public License
  26    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  27 */
  28 #include "includes.h"
  29 #include "lib/param/loadparm.h"
  30 #include "libds/common/roles.h"
  31
  32 /*******************************************************************
  33  Set the server type we will announce as via nmbd.
  34 ********************************************************************/
  35
  36 static const struct srv_role_tab {
  37         uint32_t role;
  38         const char *role_str;
  39 } srv_role_tab [] = {
  40         { ROLE_STANDALONE, "ROLE_STANDALONE" },
  41         { ROLE_DOMAIN_MEMBER, "ROLE_DOMAIN_MEMBER" },
  42         { ROLE_DOMAIN_BDC, "ROLE_DOMAIN_BDC" },
  43         { ROLE_DOMAIN_PDC, "ROLE_DOMAIN_PDC" },
  44         { ROLE_ACTIVE_DIRECTORY_DC, "ROLE_ACTIVE_DIRECTORY_DC" },
  45         { 0, NULL }
  46 };
  47
  48 const char* server_role_str(uint32_t role)
  49 {
  50         int i = 0;
  51         for (i=0; srv_role_tab[i].role_str; i++) {
  52                 if (role == srv_role_tab[i].role) {
  53                         return srv_role_tab[i].role_str;
  54                 }
  55         }
  56         return NULL;
  57 }
  58
  59 /**
  60  * Set the server role based on security, domain logons and domain master
  61  */
  62 int lp_find_server_role(int server_role, int security, int domain_logons, int domain_master)
  63 {
  64         int role;
  65
  66         if (server_role != ROLE_AUTO) {
  67                 if (lp_is_security_and_server_role_valid(server_role, security)) {
  68                         return server_role;
  69                 }
  70         }
  71
  72         /* If server_role is set to ROLE_AUTO, or conflicted with the
  73          * chosen security setting, figure out the correct role */
  74         role = ROLE_STANDALONE;
  75
  76         switch (security) {
  77                 case SEC_DOMAIN:
  78                         if (domain_logons) {
  79                                 DEBUG(1, ("Server's Role (logon server) NOT ADVISED with domain-level security\n"));
  80                                 role = ROLE_DOMAIN_BDC;
  81                                 break;
  82                         }
  83                         role = ROLE_DOMAIN_MEMBER;
  84                         break;
  85                 case SEC_ADS:
  86                         if (domain_logons) {
  87                                 role = ROLE_DOMAIN_BDC;
  88                                 break;
  89                         }
  90                         role = ROLE_DOMAIN_MEMBER;
  91                         break;
  92                 case SEC_AUTO:
  93                 case SEC_USER:
  94                         if (domain_logons) {
  95
  96                                 if (domain_master) {
  97                                         role = ROLE_DOMAIN_PDC;
  98                                 } else {
  99                                         role = ROLE_DOMAIN_BDC;
 100                                 }
 101                         }
 102                         break;
 103                 default:
 104                         DEBUG(0, ("Server's Role undefined due to unknown security mode\n"));
 105                         break;
 106         }
 107
 108         return role;
 109 }
 110
 111 /**
 112  * Set the server role based on security, domain logons and domain master
 113  */
 114 int lp_find_security(int server_role, int security)
 115 {
 116         if (security != SEC_AUTO) {
 117                 return security;
 118         }
 119
 120         switch (server_role) {
 121         case ROLE_DOMAIN_MEMBER:
 122 #if (defined(HAVE_ADS) || _SAMBA_BUILD_ >= 4)
 123                 return SEC_ADS;
 124 #else
 125                 return SEC_DOMAIN;
 126 #endif
 127         default:
 128                 return SEC_USER;
 129         }
 130 }
 131
 132
 133 /**
 134  * Check if server role and security parameters are contradictory
 135  */
 136 bool lp_is_security_and_server_role_valid(int server_role, int security)
 137 {
 138         bool valid = false;
 139
 140         if (security == SEC_AUTO) {
 141                 return true;
 142         }
 143
 144         switch (server_role) {
 145         case ROLE_AUTO:
 146                 valid = true;
 147                 break;
 148         case ROLE_STANDALONE:
 149                 if (security == SEC_USER) {
 150                         valid = true;
 151                 }
 152                 break;
 153
 154         case ROLE_DOMAIN_MEMBER:
 155                 if (security == SEC_ADS || security == SEC_DOMAIN) {
 156                         valid = true;
 157                 }
 158                 break;
 159
 160         case ROLE_DOMAIN_PDC:
 161         case ROLE_DOMAIN_BDC:
 162         case ROLE_ACTIVE_DIRECTORY_DC:
 163                 if (security == SEC_USER || security == SEC_ADS || security == SEC_DOMAIN) {
 164                         valid = true;
 165                 }
 166                 break;
 167
 168         default:
 169                 break;
 170         }
 171
 172         return valid;
 173 }