/*
register a name with our WINS servers
*/
void nbtd_winsclient_register(struct nbtd_iface_name *iname)
{
struct nbtd_interface *iface = iname->iface;
struct nbt_name_register_wins io;
struct composite_context *c;
/* setup a wins name register request */
io.in.name = iname->name;
io.in.wins_port = lp_nbt_port(iname->iface->nbtsrv->task->lp_ctx);
io.in.wins_servers = lp_wins_server_list(iname->iface->nbtsrv->task->lp_ctx);
io.in.addresses = nbtd_address_list(iface, iname);
io.in.nb_flags = iname->nb_flags;
io.in.ttl = iname->ttl;
if (!io.in.addresses) {
return;
}
c = nbt_name_register_wins_send(wins_socket(iface), &io);
if (c == NULL) {
talloc_free(io.in.addresses);
return;
}
talloc_steal(c, io.in.addresses);
c->async.fn = nbtd_wins_register_handler;
c->async.private_data = iname;
}
/*
refresh a WINS name registration
*/
static void nbtd_wins_refresh(struct tevent_context *ev, struct tevent_timer *te,
struct timeval t, void *private_data)
{
struct nbtd_iface_name *iname = talloc_get_type(private_data, struct nbtd_iface_name);
struct nbtd_interface *iface = iname->iface;
struct nbt_name_refresh_wins io;
struct composite_context *c;
TALLOC_CTX *tmp_ctx = talloc_new(iname);
/* setup a wins name refresh request */
io.in.name = iname->name;
io.in.wins_servers = (const char **)str_list_make_single(tmp_ctx, iname->wins_server);
io.in.wins_port = lp_nbt_port(iface->nbtsrv->task->lp_ctx);
io.in.addresses = nbtd_address_list(iface, tmp_ctx);
io.in.nb_flags = iname->nb_flags;
io.in.ttl = iname->ttl;
if (!io.in.addresses) {
talloc_free(tmp_ctx);
return;
}
c = nbt_name_refresh_wins_send(wins_socket(iface), &io);
if (c == NULL) {
talloc_free(tmp_ctx);
return;
}
talloc_steal(c, io.in.addresses);
c->async.fn = nbtd_wins_refresh_handler;
c->async.private_data = iname;
talloc_free(tmp_ctx);
}
/*
answer a name query
*/
void nbtd_request_query(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
struct socket_address *src)
{
struct nbtd_iface_name *iname;
struct nbt_name *name;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private_data,
struct nbtd_interface);
/* see if its a node status query */
if (packet->qdcount == 1 &&
packet->questions[0].question_type == NBT_QTYPE_STATUS) {
nbtd_query_status(nbtsock, packet, src);
return;
}
NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
NBTD_ASSERT_PACKET(packet, src,
packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
NBTD_ASSERT_PACKET(packet, src,
packet->questions[0].question_class == NBT_QCLASS_IP);
/* see if we have the requested name on this interface */
name = &packet->questions[0].name;
iname = nbtd_find_iname(iface, name, 0);
if (iname == NULL) {
/* don't send negative replies to broadcast queries */
if (packet->operation & NBT_FLAG_BROADCAST) {
return;
}
if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
nbtd_winsserver_request(nbtsock, packet, src);
return;
}
/* otherwise send a negative reply */
nbtd_negative_name_query_reply(nbtsock, packet, src);
return;
}
/*
* normally we should forward all queries with the
* recursion desired flag to the wins server, but this
* breaks are winsclient code, when doing mhomed registrations
*/
if (!(packet->operation & NBT_FLAG_BROADCAST) &&
(packet->operation & NBT_FLAG_RECURSION_DESIRED) &&
(iname->nb_flags & NBT_NM_GROUP) &&
lpcfg_wins_support(iface->nbtsrv->task->lp_ctx)) {
nbtd_winsserver_request(nbtsock, packet, src);
return;
}
/* if the name is not yet active and its a broadcast query then
ignore it for now */
if (!(iname->nb_flags & NBT_NM_ACTIVE) &&
(packet->operation & NBT_FLAG_BROADCAST)) {
DEBUG(7,("Query for %s from %s - name not active yet on %s\n",
nbt_name_string(packet, name), src->addr, iface->ip_address));
return;
}
nbtd_name_query_reply(nbtsock, packet, src,
&iname->name, iname->ttl, iname->nb_flags,
nbtd_address_list(iface, packet));
}
