1/* 2 Unix SMB/CIFS implementation. 3 NBT netbios routines and daemon - version 2 4 Copyright (C) Andrew Tridgell 1994-1998 5 Copyright (C) Luke Kenneth Casson Leighton 1994-1998 6 Copyright (C) Jeremy Allison 1994-2003 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. 20 21*/ 22 23#include "includes.h" 24 25/**************************************************************************** 26 Deal with a successful node status response. 27****************************************************************************/ 28 29static void node_status_response(struct subnet_record *subrec, 30 struct response_record *rrec, struct packet_struct *p) 31{ 32 struct nmb_packet *nmb = &p->packet.nmb; 33 struct nmb_name *question_name = &rrec->packet->packet.nmb.question.question_name; 34 struct nmb_name *answer_name = &nmb->answers->rr_name; 35 36 /* Sanity check. Ensure that the answer name in the incoming packet is the 37 same as the requested name in the outgoing packet. */ 38 39 if(!nmb_name_equal(question_name, answer_name)) { 40 DEBUG(0,("node_status_response: Answer name %s differs from question \ 41name %s.\n", nmb_namestr(answer_name), nmb_namestr(question_name))); 42 return; 43 } 44 45 DEBUG(5,("node_status_response: response from name %s on subnet %s.\n", 46 nmb_namestr(answer_name), subrec->subnet_name)); 47 48 /* Just send the whole answer resource record for the success function to parse. */ 49 if(rrec->success_fn) 50 (*(node_status_success_function)rrec->success_fn)(subrec, rrec->userdata, nmb->answers, p->ip); 51 52 /* Ensure we don't retry. */ 53 remove_response_record(subrec, rrec); 54} 55 56/**************************************************************************** 57 Deal with a timeout when requesting a node status. 58****************************************************************************/ 59 60static void node_status_timeout_response(struct subnet_record *subrec, 61 struct response_record *rrec) 62{ 63 struct nmb_packet *sent_nmb = &rrec->packet->packet.nmb; 64 struct nmb_name *question_name = &sent_nmb->question.question_name; 65 66 DEBUG(5,("node_status_timeout_response: failed to get node status from name %s on subnet %s\n", 67 nmb_namestr(question_name), subrec->subnet_name)); 68 69 if( rrec->fail_fn) 70 (*rrec->fail_fn)(subrec, rrec); 71 72 /* Ensure we don't retry. */ 73 remove_response_record(subrec, rrec); 74} 75 76/**************************************************************************** 77 Try and do a node status to a name - given the name & IP address. 78****************************************************************************/ 79 80bool node_status(struct subnet_record *subrec, struct nmb_name *nmbname, 81 struct in_addr send_ip, node_status_success_function success_fn, 82 node_status_fail_function fail_fn, struct userdata_struct *userdata) 83{ 84 if(queue_node_status( subrec, node_status_response, node_status_timeout_response, 85 success_fn, fail_fn, userdata, nmbname, send_ip)==NULL) { 86 DEBUG(0,("node_status: Failed to send packet trying to get node status for \ 87name %s, IP address %s\n", nmb_namestr(nmbname), inet_ntoa(send_ip))); 88 return True; 89 } 90 return False; 91} 92