source: branches/samba-3.2.x/source/nmbd/nmbd_logonnames.c@ 232

Last change on this file since 232 was 133, checked in by Paul Smedley, 18 years ago

Update trunk to 3.2.0pre3
File size: 5.9 KB
Line 
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}
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