Line data Source code
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 : #include "../librpc/gen_ndr/svcctl.h"
25 : #include "nmbd/nmbd.h"
26 :
27 : extern uint16_t samba_nb_type; /* Samba's NetBIOS type. */
28 :
29 : /****************************************************************************
30 : Fail to become a Logon server on a subnet.
31 : ****************************************************************************/
32 :
33 0 : static void become_logon_server_fail(struct subnet_record *subrec,
34 : struct response_record *rrec,
35 : struct nmb_name *fail_name)
36 : {
37 : unstring failname;
38 : struct work_record *work;
39 : struct server_record *servrec;
40 :
41 0 : pull_ascii_nstring(failname, sizeof(failname), fail_name->name);
42 0 : work = find_workgroup_on_subnet(subrec, failname);
43 0 : if(!work) {
44 0 : DEBUG(0,("become_logon_server_fail: Error - cannot find \
45 : workgroup %s on subnet %s\n", failname, subrec->subnet_name));
46 0 : return;
47 : }
48 :
49 0 : if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) {
50 0 : DEBUG(0,("become_logon_server_fail: Error - cannot find server %s \
51 : in workgroup %s on subnet %s\n",
52 : lp_netbios_name(), failname, subrec->subnet_name));
53 0 : work->log_state = LOGON_NONE;
54 0 : return;
55 : }
56 :
57 : /* Set the state back to LOGON_NONE. */
58 0 : work->log_state = LOGON_NONE;
59 :
60 0 : servrec->serv.type &= ~SV_TYPE_DOMAIN_CTRL;
61 :
62 0 : DEBUG(0,("become_logon_server_fail: Failed to become a domain master for \
63 : workgroup %s on subnet %s. Couldn't register name %s.\n",
64 : work->work_group, subrec->subnet_name, nmb_namestr(fail_name)));
65 :
66 : }
67 :
68 : /****************************************************************************
69 : Become a Logon server on a subnet.
70 : ****************************************************************************/
71 :
72 14 : static void become_logon_server_success(struct subnet_record *subrec,
73 : struct userdata_struct *userdata,
74 : struct nmb_name *registered_name,
75 : uint16_t nb_flags,
76 : int ttl, struct in_addr registered_ip)
77 : {
78 : unstring reg_name;
79 : struct work_record *work;
80 : struct server_record *servrec;
81 :
82 14 : pull_ascii_nstring(reg_name, sizeof(reg_name), registered_name->name);
83 14 : work = find_workgroup_on_subnet( subrec, reg_name);
84 14 : if(!work) {
85 0 : DEBUG(0,("become_logon_server_success: Error - cannot find \
86 : workgroup %s on subnet %s\n", reg_name, subrec->subnet_name));
87 0 : return;
88 : }
89 :
90 14 : if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) {
91 0 : DEBUG(0,("become_logon_server_success: Error - cannot find server %s \
92 : in workgroup %s on subnet %s\n",
93 : lp_netbios_name(), reg_name, subrec->subnet_name));
94 0 : work->log_state = LOGON_NONE;
95 0 : return;
96 : }
97 :
98 : /* Set the state in the workgroup structure. */
99 14 : work->log_state = LOGON_SRV; /* Become domain master. */
100 :
101 : /* Update our server status. */
102 14 : servrec->serv.type |= (SV_TYPE_NT|SV_TYPE_DOMAIN_MEMBER);
103 : /* To allow Win95 policies to load we need to set type domain
104 : controller.
105 : */
106 14 : servrec->serv.type |= SV_TYPE_DOMAIN_CTRL;
107 :
108 : /* Tell the namelist writer to write out a change. */
109 14 : subrec->work_changed = True;
110 :
111 : /*
112 : * Add the WORKGROUP<1C> name to the UNICAST subnet with the IP address
113 : * for this subnet so we will respond to queries on this name.
114 : */
115 :
116 : {
117 : struct nmb_name nmbname;
118 14 : make_nmb_name(&nmbname,lp_workgroup(),0x1c);
119 14 : insert_permanent_name_into_unicast(subrec, &nmbname, 0x1c);
120 : }
121 :
122 14 : DEBUG(0,("become_logon_server_success: Samba is now a logon server \
123 : for workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name));
124 : }
125 :
126 : /*******************************************************************
127 : Become a logon server by attempting to register the WORKGROUP<1c>
128 : group name.
129 : ******************************************************************/
130 :
131 14 : static void become_logon_server(struct subnet_record *subrec,
132 : struct work_record *work)
133 : {
134 14 : DEBUG(2,("become_logon_server: Attempting to become logon server for workgroup %s \
135 : on subnet %s\n", work->work_group,subrec->subnet_name));
136 :
137 14 : DEBUG(3,("become_logon_server: go to first stage: register %s<1c> name\n",
138 : work->work_group));
139 14 : work->log_state = LOGON_WAIT;
140 :
141 14 : register_name(subrec, work->work_group,0x1c,samba_nb_type|NB_GROUP,
142 : become_logon_server_success,
143 : become_logon_server_fail, NULL);
144 14 : }
145 :
146 : /*****************************************************************************
147 : Add the internet group <1c> logon names by unicast and broadcast.
148 : ****************************************************************************/
149 :
150 62 : void add_logon_names(void)
151 : {
152 : struct subnet_record *subrec;
153 :
154 124 : for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
155 62 : struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup());
156 :
157 62 : if (work && (work->log_state == LOGON_NONE)) {
158 : struct nmb_name nmbname;
159 14 : make_nmb_name(&nmbname,lp_workgroup(),0x1c);
160 :
161 14 : if (find_name_on_subnet(subrec, &nmbname, FIND_SELF_NAME) == NULL) {
162 14 : if( DEBUGLVL( 0 ) ) {
163 14 : dbgtext( "add_domain_logon_names:\n" );
164 14 : dbgtext( "Attempting to become logon server " );
165 14 : dbgtext( "for workgroup %s ", lp_workgroup() );
166 14 : dbgtext( "on subnet %s\n", subrec->subnet_name );
167 : }
168 14 : become_logon_server(subrec, work);
169 : }
170 : }
171 : }
172 62 : }
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