--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ 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 1994-2003
+
+ 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
+ (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 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 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, lp_workgroup(),
+ PERMANENT_TTL)) == NULL) {
+ DEBUG(0,("register_my_workgroup_and_names: Failed to create my workgroup %s on subnet %s. \
+Exiting.\n", lp_workgroup(), subrec->subnet_name));
+ return;
+ }
+
+ /* 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);
+}
+
+/*******************************************************************
+ Utility function to add a name to the unicast subnet, or add in
+ our IP address if it already exists.
+******************************************************************/
+
+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) {
+ 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)
+{
+ 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, 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_wins_names(void)
+{
+ struct subnet_record *subrec = unicast_subnet;
+ 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 with WINS
+******************************************************************/
+
+void refresh_my_names(time_t t)
+{
+ struct name_record *namerec;
+
+ if (wins_srv_count() < 1)
+ return;
+
+ for (namerec = (struct name_record *)ubi_trFirst(unicast_subnet->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(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);
+ }
+ }
+}
projects / samba / blobdiff