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/*
Unix SMB/CIFS implementation.
packet utility functions
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 "nbt_server/nbt_server.h"
/*
we received a badly formed packet - log it
*/
void nbtd_bad_packet(struct nbt_name_packet *packet,
const char *src_address, const char *reason)
{
DEBUG(2,("nbtd: bad packet '%s' from %s\n", reason, src_address));
if (DEBUGLVL(5)) {
NDR_PRINT_DEBUG(nbt_name_packet, packet);
}
}
/*
see if an incoming packet is a broadcast packet from one of our own
interfaces
*/
BOOL nbtd_self_packet(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
const char *src_address, int src_port)
{
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
struct nbtd_server *nbtsrv = iface->nbtsrv;
/* if its not a broadcast then its not considered a self packet */
if (!(packet->operation & NBT_FLAG_BROADCAST)) {
return False;
}
/* if its not from the nbt port, then it wasn't a broadcast from us */
if (src_port != lp_nbt_port()) {
return False;
}
/* this uses the fact that iface->nbtsock is our non-broadcast
listen address */
if (iface->nbtsock == nbtsock &&
iface != iface->nbtsrv->bcast_interface) {
return False;
}
/* we have to loop over our interface list, seeing if its from
one of our own interfaces */
for (iface=nbtsrv->interfaces;iface;iface=iface->next) {
if (strcmp(src_address, iface->ip_address) == 0) {
return True;
}
}
return False;
}
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