mirror of
https://github.com/samba-team/samba.git
synced 2024-12-23 17:34:34 +03:00
eead6d310b
our winsserver and don't defend our local name against
our own register packets...
this won gave quite confusing logmessages...
metze
(This used to be commit 31ce24d7b1)
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
defend our names against name registration requests
|
|
|
|
Copyright (C) Andrew Tridgell 2005
|
|
|
|
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"
|
|
#include "dlinklist.h"
|
|
#include "system/network.h"
|
|
#include "nbt_server/nbt_server.h"
|
|
#include "nbt_server/wins/winsserver.h"
|
|
#include "lib/socket/socket.h"
|
|
|
|
|
|
/*
|
|
defend our registered names against registration or name refresh
|
|
requests
|
|
*/
|
|
void nbtd_request_defense(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,
|
|
struct nbtd_interface);
|
|
|
|
/*
|
|
* if the packet comes from one of our interfaces
|
|
* it must be our winsclient trying to reach the winsserver
|
|
*/
|
|
if (nbtd_self_packet(nbtsock, packet, src)) {
|
|
nbtd_winsserver_request(nbtsock, packet, src);
|
|
return;
|
|
}
|
|
|
|
NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
|
|
NBTD_ASSERT_PACKET(packet, src, packet->arcount == 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);
|
|
NBTD_ASSERT_PACKET(packet, src,
|
|
packet->additional[0].rr_type == NBT_QTYPE_NETBIOS);
|
|
NBTD_ASSERT_PACKET(packet, src,
|
|
packet->additional[0].rr_class == NBT_QCLASS_IP);
|
|
NBTD_ASSERT_PACKET(packet, src,
|
|
packet->additional[0].rdata.netbios.length == 6);
|
|
|
|
/* see if we have the requested name on this interface */
|
|
name = &packet->questions[0].name;
|
|
|
|
iname = nbtd_find_iname(iface, name, NBT_NM_ACTIVE);
|
|
if (iname != NULL &&
|
|
!(name->type == NBT_NAME_LOGON || iname->nb_flags & NBT_NM_GROUP)) {
|
|
DEBUG(2,("Defending name %s on %s against %s\n",
|
|
nbt_name_string(packet, name),
|
|
iface->bcast_address, src->addr));
|
|
nbtd_name_registration_reply(nbtsock, packet, src, NBT_RCODE_ACT);
|
|
} else {
|
|
nbtd_winsserver_request(nbtsock, packet, src);
|
|
}
|
|
}
|