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         { ROLE_IPA_DC, "ROLE_IPA_DC"},
  46         { 0, NULL }
  47 };
  48
  49 const char* server_role_str(uint32_t role)
  50 {
  51         int i = 0;
  52         for (i=0; srv_role_tab[i].role_str; i++) {
  53                 if (role == srv_role_tab[i].role) {
  54                         return srv_role_tab[i].role_str;
  55                 }
  56         }
  57         return NULL;
  58 }
  59
  60 /**
  61  * Set the server role based on security, domain logons and domain master
  62  */
  63 int lp_find_server_role(int server_role, int security, int domain_logons, int domain_master)
  64 {
  65         int role;
  66
  67         if (server_role != ROLE_AUTO) {
  68                 if (lp_is_security_and_server_role_valid(server_role, security)) {
  69                         return server_role;
  70                 }
  71         }
  72
  73         /* If server_role is set to ROLE_AUTO, or conflicted with the
  74          * chosen security setting, figure out the correct role */
  75         role = ROLE_STANDALONE;
  76
  77         switch (security) {
  78                 case SEC_DOMAIN:
  79                 case SEC_ADS:
  80                         role = ROLE_DOMAIN_MEMBER;
  81                         break;
  82                 case SEC_AUTO:
  83                 case SEC_USER:
  84                         if (domain_logons) {
  85
  86                                 if (domain_master) {
  87                                         role = ROLE_DOMAIN_PDC;
  88                                 } else {
  89                                         role = ROLE_DOMAIN_BDC;
  90                                 }
  91                         }
  92                         break;
  93                 default:
  94                         DEBUG(0, ("Server's Role undefined due to unknown security mode\n"));
  95                         break;
  96         }
  97
  98         return role;
  99 }
 100
 101 /**
 102  * Set the server role based on security, domain logons and domain master
 103  */
 104 int lp_find_security(int server_role, int security)
 105 {
 106         if (security != SEC_AUTO) {
 107                 return security;
 108         }
 109
 110         switch (server_role) {
 111         case ROLE_DOMAIN_MEMBER:
 112                 return SEC_ADS;
 113         default:
 114                 return SEC_USER;
 115         }
 116 }
 117
 118
 119 /**
 120  * Check if server role and security parameters are contradictory
 121  */
 122 bool lp_is_security_and_server_role_valid(int server_role, int security)
 123 {
 124         bool valid = false;
 125
 126         if (security == SEC_AUTO) {
 127                 return true;
 128         }
 129
 130         switch (server_role) {
 131         case ROLE_AUTO:
 132                 valid = true;
 133                 break;
 134         case ROLE_DOMAIN_MEMBER:
 135                 if (security == SEC_ADS || security == SEC_DOMAIN) {
 136                         valid = true;
 137                 }
 138                 break;
 139
 140         case ROLE_STANDALONE:
 141         case ROLE_DOMAIN_PDC:
 142         case ROLE_DOMAIN_BDC:
 143         case ROLE_ACTIVE_DIRECTORY_DC:
 144         case ROLE_IPA_DC:
 145                 if (security == SEC_USER) {
 146                         valid = true;
 147                 }
 148                 break;
 149
 150         default:
 151                 break;
 152         }
 153
 154         return valid;
 155 }