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