2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2005
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 "lib/util/dlinklist.h"
24 #include "system/network.h"
25 #include "nbt_server/nbt_server.h"
26 #include "nbt_server/wins/winsserver.h"
27 #include "librpc/gen_ndr/ndr_nbt.h"
28 #include "lib/socket/socket.h"
33 void nbtd_request_query(struct nbt_name_socket *nbtsock,
34 struct nbt_name_packet *packet,
35 struct socket_address *src)
37 struct nbtd_iface_name *iname;
38 struct nbt_name *name;
39 struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
40 struct nbtd_interface);
42 /* see if its a node status query */
43 if (packet->qdcount == 1 &&
44 packet->questions[0].question_type == NBT_QTYPE_STATUS) {
45 nbtd_query_status(nbtsock, packet, src);
49 NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
50 NBTD_ASSERT_PACKET(packet, src,
51 packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
52 NBTD_ASSERT_PACKET(packet, src,
53 packet->questions[0].question_class == NBT_QCLASS_IP);
55 /* see if we have the requested name on this interface */
56 name = &packet->questions[0].name;
58 iname = nbtd_find_iname(iface, name, 0);
60 /* don't send negative replies to broadcast queries */
61 if (packet->operation & NBT_FLAG_BROADCAST) {
65 if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
66 nbtd_winsserver_request(nbtsock, packet, src);
70 /* otherwise send a negative reply */
71 nbtd_negative_name_query_reply(nbtsock, packet, src);
76 * normally we should forward all queries with the
77 * recursion desired flag to the wins server, but this
78 * breaks are winsclient code, when doing mhomed registrations
80 if (!(packet->operation & NBT_FLAG_BROADCAST) &&
81 (packet->operation & NBT_FLAG_RECURSION_DESIRED) &&
82 (iname->nb_flags & NBT_NM_GROUP) &&
84 nbtd_winsserver_request(nbtsock, packet, src);
88 /* if the name is not yet active and its a broadcast query then
90 if (!(iname->nb_flags & NBT_NM_ACTIVE) &&
91 (packet->operation & NBT_FLAG_BROADCAST)) {
92 DEBUG(7,("Query for %s from %s - name not active yet on %s\n",
93 nbt_name_string(packet, name), src->addr, iface->ip_address));
97 nbtd_name_query_reply(nbtsock, packet, src,
98 &iname->name, iname->ttl, iname->nb_flags,
99 nbtd_address_list(iface, packet));