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7b8f58c37c
as a human readable string. The format is designed to be able to be
used as the DN for the WINS database as well, while coping with
arbitrary bytes in the name (except nul bytes)
(This used to be commit aac3090e35)
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*
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Unix SMB/CIFS implementation.
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answer name queries
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Copyright (C) Andrew Tridgell 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "dlinklist.h"
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#include "system/network.h"
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#include "nbt_server/nbt_server.h"
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/*
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answer a name query
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*/
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void nbtd_request_query(struct nbt_name_socket *nbtsock,
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struct nbt_name_packet *packet,
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const char *src_address, int src_port)
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{
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struct nbtd_iface_name *iname;
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struct nbt_name *name;
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struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
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struct nbtd_interface);
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/* see if its a node status query */
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if (packet->qdcount == 1 &&
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packet->questions[0].question_type == NBT_QTYPE_STATUS) {
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nbtd_query_status(nbtsock, packet, src_address, src_port);
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return;
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}
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NBTD_ASSERT_PACKET(packet, src_address, packet->qdcount == 1);
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NBTD_ASSERT_PACKET(packet, src_address,
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packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
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NBTD_ASSERT_PACKET(packet, src_address,
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packet->questions[0].question_class == NBT_QCLASS_IP);
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/* see if we have the requested name on this interface */
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name = &packet->questions[0].name;
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iname = nbtd_find_iname(iface, name, 0);
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if (iname == NULL) {
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/* don't send negative replies to broadcast queries */
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if (packet->operation & NBT_FLAG_BROADCAST) {
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return;
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}
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/* if the name does not exist, then redirect to WINS
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server if recursion has been asked for */
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if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
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nbtd_winsserver_request(nbtsock, packet, src_address, src_port);
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return;
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}
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/* otherwise send a negative reply */
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nbtd_negative_name_query_reply(nbtsock, packet,
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src_address, src_port);
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return;
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}
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/* if the name is not yet active and its a broadcast query then
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ignore it for now */
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if (!(iname->nb_flags & NBT_NM_ACTIVE) &&
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(packet->operation & NBT_FLAG_BROADCAST)) {
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DEBUG(7,("Query for %s from %s - name not active yet on %s\n",
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nbt_name_string(packet, name), src_address, iface->ip_address));
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return;
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}
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nbtd_name_query_reply(nbtsock, packet, src_address, src_port,
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&iname->name, iname->ttl, iname->nb_flags,
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nbtd_address_list(iface, packet));
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}
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