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 3 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, see <http://www.gnu.org/licenses/>. 20 21*/ 22 23#include "includes.h" 24 25extern uint16 samba_nb_type; /* Samba's NetBIOS type. */ 26 27/**************************************************************************** 28 Fail to become a Logon server on a subnet. 29****************************************************************************/ 30 31static void become_logon_server_fail(struct subnet_record *subrec, 32 struct response_record *rrec, 33 struct nmb_name *fail_name) 34{ 35 unstring failname; 36 struct work_record *work; 37 struct server_record *servrec; 38 39 pull_ascii_nstring(failname, sizeof(failname), fail_name->name); 40 work = find_workgroup_on_subnet(subrec, failname); 41 if(!work) { 42 DEBUG(0,("become_logon_server_fail: Error - cannot find \ 43workgroup %s on subnet %s\n", failname, subrec->subnet_name)); 44 return; 45 } 46 47 if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) { 48 DEBUG(0,("become_logon_server_fail: Error - cannot find server %s \ 49in workgroup %s on subnet %s\n", 50 global_myname(), failname, subrec->subnet_name)); 51 work->log_state = LOGON_NONE; 52 return; 53 } 54 55 /* Set the state back to LOGON_NONE. */ 56 work->log_state = LOGON_NONE; 57 58 servrec->serv.type &= ~SV_TYPE_DOMAIN_CTRL; 59 60 DEBUG(0,("become_logon_server_fail: Failed to become a domain master for \ 61workgroup %s on subnet %s. Couldn't register name %s.\n", 62 work->work_group, subrec->subnet_name, nmb_namestr(fail_name))); 63 64} 65 66/**************************************************************************** 67 Become a Logon server on a subnet. 68 ****************************************************************************/ 69 70static void become_logon_server_success(struct subnet_record *subrec, 71 struct userdata_struct *userdata, 72 struct nmb_name *registered_name, 73 uint16 nb_flags, 74 int ttl, struct in_addr registered_ip) 75{ 76 unstring reg_name; 77 struct work_record *work; 78 struct server_record *servrec; 79 80 pull_ascii_nstring(reg_name, sizeof(reg_name), registered_name->name); 81 work = find_workgroup_on_subnet( subrec, reg_name); 82 if(!work) { 83 DEBUG(0,("become_logon_server_success: Error - cannot find \ 84workgroup %s on subnet %s\n", reg_name, subrec->subnet_name)); 85 return; 86 } 87 88 if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) { 89 DEBUG(0,("become_logon_server_success: Error - cannot find server %s \ 90in workgroup %s on subnet %s\n", 91 global_myname(), reg_name, subrec->subnet_name)); 92 work->log_state = LOGON_NONE; 93 return; 94 } 95 96 /* Set the state in the workgroup structure. */ 97 work->log_state = LOGON_SRV; /* Become domain master. */ 98 99 /* Update our server status. */ 100 servrec->serv.type |= (SV_TYPE_NT|SV_TYPE_DOMAIN_MEMBER); 101 /* To allow Win95 policies to load we need to set type domain 102 controller. 103 */ 104 servrec->serv.type |= SV_TYPE_DOMAIN_CTRL; 105 106 /* Tell the namelist writer to write out a change. */ 107 subrec->work_changed = True; 108 109 /* 110 * Add the WORKGROUP<1C> name to the UNICAST subnet with the IP address 111 * for this subnet so we will respond to queries on this name. 112 */ 113 114 { 115 struct nmb_name nmbname; 116 make_nmb_name(&nmbname,lp_workgroup(),0x1c); 117 insert_permanent_name_into_unicast(subrec, &nmbname, 0x1c); 118 } 119 120 DEBUG(0,("become_logon_server_success: Samba is now a logon server \ 121for workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name)); 122} 123 124/******************************************************************* 125 Become a logon server by attempting to register the WORKGROUP<1c> 126 group name. 127******************************************************************/ 128 129static void become_logon_server(struct subnet_record *subrec, 130 struct work_record *work) 131{ 132 DEBUG(2,("become_logon_server: Atempting to become logon server for workgroup %s \ 133on subnet %s\n", work->work_group,subrec->subnet_name)); 134 135 DEBUG(3,("become_logon_server: go to first stage: register %s<1c> name\n", 136 work->work_group)); 137 work->log_state = LOGON_WAIT; 138 139 register_name(subrec, work->work_group,0x1c,samba_nb_type|NB_GROUP, 140 become_logon_server_success, 141 become_logon_server_fail, NULL); 142} 143 144/***************************************************************************** 145 Add the internet group <1c> logon names by unicast and broadcast. 146 ****************************************************************************/ 147 148void add_logon_names(void) 149{ 150 struct subnet_record *subrec; 151 152 for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) { 153 struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup()); 154 155 if (work && (work->log_state == LOGON_NONE)) { 156 struct nmb_name nmbname; 157 make_nmb_name(&nmbname,lp_workgroup(),0x1c); 158 159 if (find_name_on_subnet(subrec, &nmbname, FIND_SELF_NAME) == NULL) { 160 if( DEBUGLVL( 0 ) ) { 161 dbgtext( "add_domain_logon_names:\n" ); 162 dbgtext( "Attempting to become logon server " ); 163 dbgtext( "for workgroup %s ", lp_workgroup() ); 164 dbgtext( "on subnet %s\n", subrec->subnet_name ); 165 } 166 become_logon_server(subrec, work); 167 } 168 } 169 } 170} 171