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
+ Copyright (C) Jeremy Allison 1994-2003
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-
-extern char **my_netbios_names;
-extern fstring global_myworkgroup;
+#include "nmbd/nmbd.h"
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));
+ 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 one subnet
Also add the magic Samba names.
- **************************************************************************/
+**************************************************************************/
+
void register_my_workgroup_one_subnet(struct subnet_record *subrec)
{
int i;
struct work_record *work;
/* Create the workgroup on the subnet. */
- if((work = create_workgroup_on_subnet(subrec, global_myworkgroup,
+ if((work = create_workgroup_on_subnet(subrec, lp_workgroup(),
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));
+Exiting.\n", lp_workgroup(), subrec->subnet_name));
return;
}
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,
+ 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,
+ 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,
+ register_name(subrec, my_netbios_names(i),0x00,samba_nb_type,
NULL,
my_name_register_failed, NULL);
}
static void insert_refresh_name_into_unicast( struct subnet_record *subrec,
struct nmb_name *nmbname, uint16 nb_type )
{
- struct name_record *namerec;
-
- if (!we_are_a_wins_client()) {
- insert_permanent_name_into_unicast(subrec, nmbname, nb_type);
- return;
- }
-
- if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL)
- {
- /* The name needs to be created on the unicast subnet. */
- (void)add_name_to_subnet( unicast_subnet, nmbname->name,
- nmbname->name_type, nb_type,
- MIN(lp_max_ttl(), MAX_REFRESH_TIME), SELF_NAME, 1, &subrec->myip);
- }
- else
- {
- /* The name already exists on the unicast subnet. Add our local
- IP for the given broadcast subnet to the name. */
- add_ip_to_name_record( namerec, subrec->myip);
- }
+ struct name_record *namerec;
+
+ if (!we_are_a_wins_client()) {
+ insert_permanent_name_into_unicast(subrec, nmbname, nb_type);
+ return;
+ }
+
+ if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL) {
+ unstring name;
+ pull_ascii_nstring(name, sizeof(name), nmbname->name);
+ /* The name needs to be created on the unicast subnet. */
+ (void)add_name_to_subnet( unicast_subnet, name,
+ nmbname->name_type, nb_type,
+ MIN(lp_max_ttl(), MAX_REFRESH_TIME), SELF_NAME, 1, &subrec->myip);
+ } else {
+ /* The name already exists on the unicast subnet. Add our local
+ IP for the given broadcast subnet to the name. */
+ add_ip_to_name_record( namerec, subrec->myip);
+ }
}
/****************************************************************************
Add my workgroup and my given names to the subnet lists.
Also add the magic Samba names.
- **************************************************************************/
+**************************************************************************/
-BOOL register_my_workgroup_and_names(void)
+bool register_my_workgroup_and_names(void)
{
- struct subnet_record *subrec;
- int i;
-
- for(subrec = FIRST_SUBNET;
- subrec;
- subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
- {
- register_my_workgroup_one_subnet(subrec);
- }
-
- /* 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. */
-
- 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);
- insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
-
- make_nmb_name(&nmbname, my_netbios_names[i],0x3);
- insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
-
- make_nmb_name(&nmbname, my_netbios_names[i],0x0);
- insert_refresh_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);
- insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
-
- make_nmb_name(&nmbname, global_myworkgroup, 0x1e);
- insert_refresh_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;
+ struct subnet_record *subrec;
+ int i;
+ const char **cluster_addresses = NULL;
+
+ for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
+ register_my_workgroup_one_subnet(subrec);
+ }
+
+ /* 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. */
+
+ 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);
+ insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+
+ make_nmb_name(&nmbname, my_netbios_names(i),0x3);
+ insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+
+ make_nmb_name(&nmbname, my_netbios_names(i),0x0);
+ insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+ }
+ }
+
+ /*
+ * add in any cluster addresses. We need to response to these,
+ * but not listen on them. This allows us to run nmbd on every
+ * node in the cluster, and have all of them register with a
+ * WINS server correctly
+ */
+ if (lp_clustering()) {
+ cluster_addresses = lp_cluster_addresses();
+ }
+ if (cluster_addresses) {
+ int a, n;
+ unsigned name_types[] = {0x20, 0x3, 0x0};
+
+ for (i=0; my_netbios_names(i); i++) {
+ for(subrec = FIRST_SUBNET; subrec; subrec = subrec->next) {
+ for (n=0;n<ARRAY_SIZE(name_types);n++) {
+ struct name_record *namerec;
+ struct nmb_name nmbname;
+ struct in_addr ip;
+ make_nmb_name(&nmbname, my_netbios_names(i), name_types[n]);
+ namerec = find_name_on_subnet(unicast_subnet, &nmbname, FIND_SELF_NAME);
+ if (namerec == NULL) continue;
+ for (a=0;cluster_addresses[a];a++) {
+ ip = interpret_addr2(cluster_addresses[a]);
+ add_ip_to_name_record(namerec, ip);
+ }
+ }
+ }
+ }
+ }
+
+ /*
+ * 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, lp_workgroup(), 0x0);
+ insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
+
+ make_nmb_name(&nmbname, lp_workgroup(), 0x1e);
+ insert_refresh_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)
+void release_wins_names(void)
{
-#if 0 /*JRR: do WINS server only, otherwise clients ignore us when we come back up*/
- struct subnet_record *subrec;
-
- for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
-#else
- struct subnet_record *subrec = unicast_subnet;
-#endif
- {
- 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);
- }
- }
+ struct subnet_record *subrec = unicast_subnet;
+ struct name_record *namerec, *nextnamerec;
+
+ for (namerec = subrec->namelist; namerec; namerec = nextnamerec) {
+ nextnamerec = namerec->next;
+ if( (namerec->data.source == SELF_NAME)
+ && !NAME_IS_DEREGISTERING(namerec) )
+ release_name( subrec, namerec, standard_success_release,
+ NULL, NULL);
+ }
}
/*******************************************************************
- Refresh our registered names.
- ******************************************************************/
+ Refresh our registered names with WINS
+******************************************************************/
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;
-
- /* B nodes don't send out name refresh requests, see RFC 1001, 15.5.1 */
- if (subrec != unicast_subnet)
- continue;
-
- 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 = t + lp_max_ttl();
- namerec->data.refresh_time = t + MIN(lp_max_ttl(), MAX_REFRESH_TIME);
- }
- }
- }
+ struct name_record *namerec;
+
+ if (wins_srv_count() < 1)
+ return;
+
+ for (namerec = unicast_subnet->namelist; namerec; namerec = namerec->next) {
+ /* 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(unicast_subnet, namerec)) {
+ wins_refresh_name(namerec);
+ }
+ namerec->data.death_time = t + lp_max_ttl();
+ namerec->data.refresh_time = t + MIN(lp_max_ttl()/2, MAX_REFRESH_TIME);
+ }
+ }
}
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