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/*
Unix SMB/CIFS implementation.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Luke Kenneth Casson Leighton 1994-1998
Copyright (C) Jeremy Allison 1994-2003
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "nmbd/nmbd.h"
/****************************************************************************
Deal with a successful node status response.
****************************************************************************/
static void node_status_response(struct subnet_record *subrec,
struct response_record *rrec, struct packet_struct *p)
{
struct nmb_packet *nmb = &p->packet.nmb;
struct nmb_name *question_name = &rrec->packet->packet.nmb.question.question_name;
struct nmb_name *answer_name = &nmb->answers->rr_name;
/* Sanity check. Ensure that the answer name in the incoming packet is the
same as the requested name in the outgoing packet. */
if(!nmb_name_equal(question_name, answer_name)) {
DEBUG(0,("node_status_response: Answer name %s differs from question \
name %s.\n", nmb_namestr(answer_name), nmb_namestr(question_name)));
return;
}
DEBUG(5,("node_status_response: response from name %s on subnet %s.\n",
nmb_namestr(answer_name), subrec->subnet_name));
/* Just send the whole answer resource record for the success function to parse. */
if(rrec->success_fn)
(*(node_status_success_function)rrec->success_fn)(subrec, rrec->userdata, nmb->answers, p->ip);
/* Ensure we don't retry. */
remove_response_record(subrec, rrec);
}
/****************************************************************************
Deal with a timeout when requesting a node status.
****************************************************************************/
static void node_status_timeout_response(struct subnet_record *subrec,
struct response_record *rrec)
{
struct nmb_packet *sent_nmb = &rrec->packet->packet.nmb;
struct nmb_name *question_name = &sent_nmb->question.question_name;
DEBUG(5,("node_status_timeout_response: failed to get node status from name %s on subnet %s\n",
nmb_namestr(question_name), subrec->subnet_name));
if( rrec->fail_fn)
(*rrec->fail_fn)(subrec, rrec);
/* Ensure we don't retry. */
remove_response_record(subrec, rrec);
}
/****************************************************************************
Try and do a node status to a name - given the name & IP address.
****************************************************************************/
bool node_status(struct subnet_record *subrec, struct nmb_name *nmbname,
struct in_addr send_ip, node_status_success_function success_fn,
node_status_fail_function fail_fn, struct userdata_struct *userdata)
{
if(queue_node_status( subrec, node_status_response, node_status_timeout_response,
success_fn, fail_fn, userdata, nmbname, send_ip)==NULL) {
DEBUG(0,("node_status: Failed to send packet trying to get node status for \
name %s, IP address %s\n", nmb_namestr(nmbname), inet_ntoa(send_ip)));
return True;
}
return False;
}
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