1/* 2 Unix SMB/CIFS implementation. 3 NBT netbios routines and daemon - version 2 4 Copyright (C) Andrew Tridgell 1994-1998 5 Copyright (C) Luke Kenneth Casson Leighton 1994-1998 6 Copyright (C) Jeremy Allison 1994-2003 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 22*/ 23 24#include "includes.h" 25 26extern struct in_addr allones_ip; 27 28extern uint16 samba_nb_type; /* Samba's NetBIOS type. */ 29 30/**************************************************************************** 31 Fail to become a Logon server on a subnet. 32****************************************************************************/ 33 34static void become_logon_server_fail(struct subnet_record *subrec, 35 struct response_record *rrec, 36 struct nmb_name *fail_name) 37{ 38 unstring failname; 39 struct work_record *work; 40 struct server_record *servrec; 41 42 pull_ascii_nstring(failname, sizeof(failname), fail_name->name); 43 work = find_workgroup_on_subnet(subrec, failname); 44 if(!work) { 45 DEBUG(0,("become_logon_server_fail: Error - cannot find \ 46workgroup %s on subnet %s\n", failname, subrec->subnet_name)); 47 return; 48 } 49 50 if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) { 51 DEBUG(0,("become_logon_server_fail: Error - cannot find server %s \ 52in workgroup %s on subnet %s\n", 53 global_myname(), failname, subrec->subnet_name)); 54 work->log_state = LOGON_NONE; 55 return; 56 } 57 58 /* Set the state back to LOGON_NONE. */ 59 work->log_state = LOGON_NONE; 60 61 servrec->serv.type &= ~SV_TYPE_DOMAIN_CTRL; 62 63 DEBUG(0,("become_logon_server_fail: Failed to become a domain master for \ 64workgroup %s on subnet %s. Couldn't register name %s.\n", 65 work->work_group, subrec->subnet_name, nmb_namestr(fail_name))); 66 67} 68 69/**************************************************************************** 70 Become a Logon server on a subnet. 71 ****************************************************************************/ 72 73static void become_logon_server_success(struct subnet_record *subrec, 74 struct userdata_struct *userdata, 75 struct nmb_name *registered_name, 76 uint16 nb_flags, 77 int ttl, struct in_addr registered_ip) 78{ 79 unstring reg_name; 80 struct work_record *work; 81 struct server_record *servrec; 82 83 pull_ascii_nstring(reg_name, sizeof(reg_name), registered_name->name); 84 work = find_workgroup_on_subnet( subrec, reg_name); 85 if(!work) { 86 DEBUG(0,("become_logon_server_success: Error - cannot find \ 87workgroup %s on subnet %s\n", reg_name, subrec->subnet_name)); 88 return; 89 } 90 91 if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) { 92 DEBUG(0,("become_logon_server_success: Error - cannot find server %s \ 93in workgroup %s on subnet %s\n", 94 global_myname(), reg_name, subrec->subnet_name)); 95 work->log_state = LOGON_NONE; 96 return; 97 } 98 99 /* Set the state in the workgroup structure. */ 100 work->log_state = LOGON_SRV; /* Become domain master. */ 101 102 /* Update our server status. */ 103 servrec->serv.type |= (SV_TYPE_NT|SV_TYPE_DOMAIN_MEMBER); 104 /* To allow Win95 policies to load we need to set type domain 105 controller. 106 */ 107 servrec->serv.type |= SV_TYPE_DOMAIN_CTRL; 108 109 /* Tell the namelist writer to write out a change. */ 110 subrec->work_changed = True; 111 112 /* 113 * Add the WORKGROUP<1C> name to the UNICAST subnet with the IP address 114 * for this subnet so we will respond to queries on this name. 115 */ 116 117 { 118 struct nmb_name nmbname; 119 make_nmb_name(&nmbname,lp_workgroup(),0x1c); 120 insert_permanent_name_into_unicast(subrec, &nmbname, 0x1c); 121 } 122 123 DEBUG(0,("become_logon_server_success: Samba is now a logon server \ 124for workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name)); 125} 126 127/******************************************************************* 128 Become a logon server by attempting to register the WORKGROUP<1c> 129 group name. 130******************************************************************/ 131 132static void become_logon_server(struct subnet_record *subrec, 133 struct work_record *work) 134{ 135 DEBUG(2,("become_logon_server: Atempting to become logon server for workgroup %s \ 136on subnet %s\n", work->work_group,subrec->subnet_name)); 137 138 DEBUG(3,("become_logon_server: go to first stage: register %s<1c> name\n", 139 work->work_group)); 140 work->log_state = LOGON_WAIT; 141 142 register_name(subrec, work->work_group,0x1c,samba_nb_type|NB_GROUP, 143 become_logon_server_success, 144 become_logon_server_fail, NULL); 145} 146 147/***************************************************************************** 148 Add the internet group <1c> logon names by unicast and broadcast. 149 ****************************************************************************/ 150 151void add_logon_names(void) 152{ 153 struct subnet_record *subrec; 154 155 for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) { 156 struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup()); 157 158 if (work && (work->log_state == LOGON_NONE)) { 159 struct nmb_name nmbname; 160 make_nmb_name(&nmbname,lp_workgroup(),0x1c); 161 162 if (find_name_on_subnet(subrec, &nmbname, FIND_SELF_NAME) == NULL) { 163 if( DEBUGLVL( 0 ) ) { 164 dbgtext( "add_domain_logon_names:\n" ); 165 dbgtext( "Attempting to become logon server " ); 166 dbgtext( "for workgroup %s ", lp_workgroup() ); 167 dbgtext( "on subnet %s\n", subrec->subnet_name ); 168 } 169 become_logon_server(subrec, work); 170 } 171 } 172 } 173} 174