util: Remove 32bit macros breaking strict aliasing.
[Samba.git] / source3 / nmbd / nmbd_mynames.c
blobe3798507c219766a4e1bbde2bed5250ac298051f
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
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.
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.
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/>.
23 #include "includes.h"
24 #include "nmbd/nmbd.h"
26 extern uint16 samba_nb_type; /* Samba's NetBIOS type. */
28 /****************************************************************************
29 Fail funtion when registering my netbios names.
30 **************************************************************************/
32 static void my_name_register_failed(struct subnet_record *subrec,
33 struct response_record *rrec, struct nmb_name *nmbname)
35 DEBUG(0,("my_name_register_failed: Failed to register my name %s on subnet %s.\n",
36 nmb_namestr(nmbname), subrec->subnet_name));
40 /****************************************************************************
41 Add my workgroup and my given names to one subnet
42 Also add the magic Samba names.
43 **************************************************************************/
45 void register_my_workgroup_one_subnet(struct subnet_record *subrec)
47 int i;
49 struct work_record *work;
51 /* Create the workgroup on the subnet. */
52 if((work = create_workgroup_on_subnet(subrec, lp_workgroup(),
53 PERMANENT_TTL)) == NULL) {
54 DEBUG(0,("register_my_workgroup_and_names: Failed to create my workgroup %s on subnet %s. \
55 Exiting.\n", lp_workgroup(), subrec->subnet_name));
56 return;
59 /* Each subnet entry, except for the wins_server_subnet has
60 the magic Samba names. */
61 add_samba_names_to_subnet(subrec);
63 /* Register all our names including aliases. */
64 for (i=0; my_netbios_names(i); i++) {
65 register_name(subrec, my_netbios_names(i),0x20,samba_nb_type,
66 NULL,
67 my_name_register_failed, NULL);
68 register_name(subrec, my_netbios_names(i),0x03,samba_nb_type,
69 NULL,
70 my_name_register_failed, NULL);
71 register_name(subrec, my_netbios_names(i),0x00,samba_nb_type,
72 NULL,
73 my_name_register_failed, NULL);
76 /* Initiate election processing, register the workgroup names etc. */
77 initiate_myworkgroup_startup(subrec, work);
80 /*******************************************************************
81 Utility function to add a name to the unicast subnet, or add in
82 our IP address if it already exists.
83 ******************************************************************/
85 static void insert_refresh_name_into_unicast( struct subnet_record *subrec,
86 struct nmb_name *nmbname, uint16 nb_type )
88 struct name_record *namerec;
90 if (!we_are_a_wins_client()) {
91 insert_permanent_name_into_unicast(subrec, nmbname, nb_type);
92 return;
95 if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL) {
96 unstring name;
97 pull_ascii_nstring(name, sizeof(name), nmbname->name);
98 /* The name needs to be created on the unicast subnet. */
99 (void)add_name_to_subnet( unicast_subnet, name,
100 nmbname->name_type, nb_type,
101 MIN(lp_max_ttl(), MAX_REFRESH_TIME), SELF_NAME, 1, &subrec->myip);
102 } else {
103 /* The name already exists on the unicast subnet. Add our local
104 IP for the given broadcast subnet to the name. */
105 add_ip_to_name_record( namerec, subrec->myip);
109 /****************************************************************************
110 Add my workgroup and my given names to the subnet lists.
111 Also add the magic Samba names.
112 **************************************************************************/
114 bool register_my_workgroup_and_names(void)
116 struct subnet_record *subrec;
117 int i;
118 const char **cluster_addresses = NULL;
120 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
121 register_my_workgroup_one_subnet(subrec);
124 /* We still need to add the magic Samba
125 names and the netbios names to the unicast subnet directly. This is
126 to allow unicast node status requests and queries to still work
127 in a broadcast only environment. */
129 add_samba_names_to_subnet(unicast_subnet);
131 for (i=0; my_netbios_names(i); i++) {
132 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
134 * Ensure all the IP addresses are added if we are multihomed.
136 struct nmb_name nmbname;
138 make_nmb_name(&nmbname, my_netbios_names(i),0x20);
139 insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
141 make_nmb_name(&nmbname, my_netbios_names(i),0x3);
142 insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
144 make_nmb_name(&nmbname, my_netbios_names(i),0x0);
145 insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
150 * add in any cluster addresses. We need to response to these,
151 * but not listen on them. This allows us to run nmbd on every
152 * node in the cluster, and have all of them register with a
153 * WINS server correctly
155 if (lp_clustering()) {
156 cluster_addresses = lp_cluster_addresses();
158 if (cluster_addresses) {
159 int a, n;
160 unsigned name_types[] = {0x20, 0x3, 0x0};
162 for (i=0; my_netbios_names(i); i++) {
163 for(subrec = FIRST_SUBNET; subrec; subrec = subrec->next) {
164 for (n=0;n<ARRAY_SIZE(name_types);n++) {
165 struct name_record *namerec;
166 struct nmb_name nmbname;
167 struct in_addr ip;
168 make_nmb_name(&nmbname, my_netbios_names(i), name_types[n]);
169 namerec = find_name_on_subnet(unicast_subnet, &nmbname, FIND_SELF_NAME);
170 if (namerec == NULL) continue;
171 for (a=0;cluster_addresses[a];a++) {
172 ip = interpret_addr2(cluster_addresses[a]);
173 add_ip_to_name_record(namerec, ip);
181 * Add the WORKGROUP<0> and WORKGROUP<1e> group names to the unicast subnet
182 * also for the same reasons.
185 for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
187 * Ensure all the IP addresses are added if we are multihomed.
189 struct nmb_name nmbname;
191 make_nmb_name(&nmbname, lp_workgroup(), 0x0);
192 insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
194 make_nmb_name(&nmbname, lp_workgroup(), 0x1e);
195 insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
199 * We need to add the Samba names to the remote broadcast subnet,
200 * as NT 4.x does directed broadcast requests to the *<0x0> name.
203 add_samba_names_to_subnet(remote_broadcast_subnet);
205 return True;
208 /****************************************************************************
209 Remove all the names we registered.
210 **************************************************************************/
212 void release_wins_names(void)
214 struct subnet_record *subrec = unicast_subnet;
215 struct name_record *namerec, *nextnamerec;
217 for (namerec = subrec->namelist; namerec; namerec = nextnamerec) {
218 nextnamerec = namerec->next;
219 if( (namerec->data.source == SELF_NAME)
220 && !NAME_IS_DEREGISTERING(namerec) )
221 release_name( subrec, namerec, standard_success_release,
222 NULL, NULL);
226 /*******************************************************************
227 Refresh our registered names with WINS
228 ******************************************************************/
230 void refresh_my_names(time_t t)
232 struct name_record *namerec;
234 if (wins_srv_count() < 1)
235 return;
237 for (namerec = unicast_subnet->namelist; namerec; namerec = namerec->next) {
238 /* Each SELF name has an individual time to be refreshed. */
239 if ((namerec->data.source == SELF_NAME) &&
240 (namerec->data.refresh_time < t) &&
241 (namerec->data.death_time != PERMANENT_TTL)) {
242 /* We cheat here and pretend the refresh is going to be
243 successful & update the refresh times. This stops
244 multiple refresh calls being done. We actually
245 deal with refresh failure in the fail_fn.
247 if (!is_refresh_already_queued(unicast_subnet, namerec)) {
248 wins_refresh_name(namerec);
250 namerec->data.death_time = t + lp_max_ttl();
251 namerec->data.refresh_time = t + MIN(lp_max_ttl()/2, MAX_REFRESH_TIME);