1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Luke Kenneth Casson Leighton 1994-1998
Copyright (C) Jeremy Allison 1994-1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
extern int DEBUGLEVEL;
extern char **my_netbios_names;
extern fstring global_myworkgroup;
extern pstring scope;
extern uint16 samba_nb_type; /* Samba's NetBIOS type. */
/****************************************************************************
Fail funtion when registering my netbios names.
**************************************************************************/
static void my_name_register_failed(struct subnet_record *subrec,
struct response_record *rrec, struct nmb_name *nmbname)
{
DEBUG(0,("my_name_register_failed: Failed to register my name %s on subnet %s.\n",
nmb_namestr(nmbname), subrec->subnet_name));
}
/****************************************************************************
Add my workgroup and my given names to the subnet lists.
Also add the magic Samba names.
**************************************************************************/
BOOL register_my_workgroup_and_names(void)
{
struct subnet_record *subrec;
struct work_record *work;
int i;
for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
{
/* Create the workgroup on the subnet. */
if((work = create_workgroup_on_subnet(subrec, global_myworkgroup, PERMANENT_TTL)) == NULL)
{
DEBUG(0,("register_my_workgroup_and_names: Failed to create my workgroup %s on subnet %s. \
Exiting.\n", global_myworkgroup, subrec->subnet_name));
return False;
}
/* Each subnet entry, except for the wins_server_subnet has the magic Samba names. */
add_samba_names_to_subnet(subrec);
/* Register all our names including aliases. */
for (i=0; my_netbios_names[i]; i++)
{
register_name(subrec, my_netbios_names[i],0x20,samba_nb_type,
NULL,
my_name_register_failed, NULL);
register_name(subrec, my_netbios_names[i],0x03,samba_nb_type,
NULL,
my_name_register_failed, NULL);
register_name(subrec, my_netbios_names[i],0x00,samba_nb_type,
NULL,
my_name_register_failed, NULL);
}
/* Initiate election processing, register the workgroup names etc. */
initiate_myworkgroup_startup(subrec, work);
}
/* If we are not a WINS client, we still need to add the magic Samba
names and the netbios names to the unicast subnet directly. This is
to allow unicast node status requests and queries to still work
in a broadcast only environment. */
if(we_are_a_wins_client() == False)
{
add_samba_names_to_subnet(unicast_subnet);
for (i=0; my_netbios_names[i]; i++)
{
for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
{
/*
* Ensure all the IP addresses are added if we are multihomed.
*/
struct nmb_name nmbname;
make_nmb_name(&nmbname, my_netbios_names[i],0x20, scope);
insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
make_nmb_name(&nmbname, my_netbios_names[i],0x3, scope);
insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
make_nmb_name(&nmbname, my_netbios_names[i],0x0, scope);
insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
}
}
/*
* Add the WORKGROUP<0> and WORKGROUP<1e> group names to the unicast subnet
* also for the same reasons.
*/
for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
{
/*
* Ensure all the IP addresses are added if we are multihomed.
*/
struct nmb_name nmbname;
make_nmb_name(&nmbname, global_myworkgroup, 0x0, scope);
insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
make_nmb_name(&nmbname, global_myworkgroup, 0x1e, scope);
insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
}
}
/*
* We need to add the Samba names to the remote broadcast subnet,
* as NT 4.x does directed broadcast requests to the *<0x0> name.
*/
add_samba_names_to_subnet(remote_broadcast_subnet);
return True;
}
/****************************************************************************
Remove all the names we registered.
**************************************************************************/
void release_my_names(void)
{
struct subnet_record *subrec;
for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
{
struct name_record *namerec, *nextnamerec;
for (namerec = (struct name_record *)ubi_trFirst( subrec->namelist );
namerec;
namerec = nextnamerec)
{
nextnamerec = (struct name_record *)ubi_trNext( namerec );
if( (namerec->data.source == SELF_NAME)
&& !NAME_IS_DEREGISTERING(namerec) )
release_name( subrec, namerec, standard_success_release,
NULL, NULL);
}
}
}
/*******************************************************************
Refresh our registered names.
******************************************************************/
void refresh_my_names(time_t t)
{
struct subnet_record *subrec;
for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
{
struct name_record *namerec;
for( namerec = (struct name_record *)ubi_trFirst( subrec->namelist );
namerec;
namerec = (struct name_record *)ubi_trNext( namerec ) )
{
/* Each SELF name has an individual time to be refreshed. */
if( (namerec->data.source == SELF_NAME)
&& (namerec->data.refresh_time < t)
&& ( namerec->data.death_time != PERMANENT_TTL) )
{
/* We cheat here and pretend the refresh is going to be
successful & update the refresh times. This stops
multiple refresh calls being done. We actually
deal with refresh failure in the fail_fn.
*/
if( !is_refresh_already_queued( subrec, namerec) )
refresh_name( subrec, namerec, NULL, NULL, NULL );
namerec->data.death_time += lp_max_ttl();
namerec->data.refresh_time += MIN(lp_max_ttl(), MAX_REFRESH_TIME);
}
}
}
}
|
