2 Unix SMB/Netbios implementation.
4 NBT netbios routines and daemon - version 2
5 Copyright (C) Andrew Tridgell 1994-1998
6 Copyright (C) Luke Kenneth Casson Leighton 1994-1998
7 Copyright (C) Jeremy Allison 1994-1998
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 extern int DEBUGLEVEL;
29 extern char **my_netbios_names;
30 extern fstring global_myworkgroup;
33 extern uint16 samba_nb_type; /* Samba's NetBIOS type. */
35 /****************************************************************************
36 Fail funtion when registering my netbios names.
37 **************************************************************************/
39 static void my_name_register_failed(struct subnet_record *subrec,
40 struct response_record *rrec, struct nmb_name *nmbname)
42 DEBUG(0,("my_name_register_failed: Failed to register my name %s on subnet %s.\n",
43 namestr(nmbname), subrec->subnet_name));
46 /****************************************************************************
47 Add my workgroup and my given names to the subnet lists.
48 Also add the magic Samba names.
49 **************************************************************************/
51 BOOL register_my_workgroup_and_names(void)
53 struct subnet_record *subrec;
54 struct work_record *work;
57 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
59 /* Create the workgroup on the subnet. */
60 if((work = create_workgroup_on_subnet(subrec, global_myworkgroup, PERMANENT_TTL)) == NULL)
62 DEBUG(0,("register_my_workgroup_and_names: Failed to create my workgroup %s on subnet %s. \
63 Exiting.\n", global_myworkgroup, subrec->subnet_name));
67 /* Each subnet entry, except for the wins_server_subnet has the magic Samba names. */
68 add_samba_names_to_subnet(subrec);
70 /* Register all our names including aliases. */
71 for (i=0; my_netbios_names[i]; i++)
73 register_name(subrec, my_netbios_names[i],0x20,samba_nb_type,
75 my_name_register_failed, NULL);
76 register_name(subrec, my_netbios_names[i],0x03,samba_nb_type,
78 my_name_register_failed, NULL);
79 register_name(subrec, my_netbios_names[i],0x00,samba_nb_type,
81 my_name_register_failed, NULL);
84 /* Initiate election processing, register the workgroup names etc. */
85 initiate_myworkgroup_startup(subrec, work);
88 /* If we are not a WINS client, we still need to add the magic Samba
89 names and the netbios names to the unicast subnet directly. This is
90 to allow unicast node status requests and queries to still work
91 in a broadcast only environment. */
93 if(we_are_a_wins_client() == False)
95 add_samba_names_to_subnet(unicast_subnet);
97 for (i=0; my_netbios_names[i]; i++)
99 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
102 * Ensure all the IP addresses are added if we are multihomed.
104 struct nmb_name nmbname;
106 make_nmb_name(&nmbname, my_netbios_names[i],0x20, scope);
107 insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
109 make_nmb_name(&nmbname, my_netbios_names[i],0x3, scope);
110 insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
112 make_nmb_name(&nmbname, my_netbios_names[i],0x0, scope);
113 insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type);
118 * Add the WORKGROUP<0> and WORKGROUP<1e> group names to the unicast subnet
119 * also for the same reasons.
122 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
125 * Ensure all the IP addresses are added if we are multihomed.
127 struct nmb_name nmbname;
129 make_nmb_name(&nmbname, global_myworkgroup, 0x0, scope);
130 insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
132 make_nmb_name(&nmbname, global_myworkgroup, 0x1e, scope);
133 insert_permanent_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
138 * We need to add the Samba names to the remote broadcast subnet,
139 * as NT 4.x does directed broadcast requests to the *<0x0> name.
141 add_samba_names_to_subnet(remote_broadcast_subnet);
146 /****************************************************************************
147 Remove all the names we registered.
148 **************************************************************************/
150 void release_my_names(void)
152 struct subnet_record *subrec;
154 for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
156 struct name_record *namerec, *nextnamerec;
158 for (namerec = (struct name_record *)ubi_trFirst( subrec->namelist );
160 namerec = nextnamerec)
162 nextnamerec = (struct name_record *)ubi_trNext( namerec );
163 if( (namerec->data.source == SELF_NAME)
164 && !NAME_IS_DEREGISTERING(namerec) )
165 release_name( subrec, namerec, standard_success_release,
171 /*******************************************************************
172 Refresh our registered names.
173 ******************************************************************/
175 void refresh_my_names(time_t t)
177 struct subnet_record *subrec;
179 for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
181 struct name_record *namerec;
183 for( namerec = (struct name_record *)ubi_trFirst( subrec->namelist );
185 namerec = (struct name_record *)ubi_trNext( namerec ) )
187 /* Each SELF name has an individual time to be refreshed. */
188 if( (namerec->data.source == SELF_NAME)
189 && (namerec->data.refresh_time < t)
190 && ( namerec->data.death_time != PERMANENT_TTL) )
192 /* We cheat here and pretend the refresh is going to be
193 successful & update the refresh times. This stops
194 multiple refresh calls being done. We actually
195 deal with refresh failure in the fail_fn.
197 if( !is_refresh_already_queued( subrec, namerec) )
198 refresh_name( subrec, namerec, NULL, NULL, NULL );
199 namerec->data.death_time += lp_max_ttl();
200 namerec->data.refresh_time += MIN(lp_max_ttl(), MAX_REFRESH_TIME);