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 2 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, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 22*/ 23 24#include "includes.h" 25 26/**************************************************************************** 27 Deal with a successful node status response. 28****************************************************************************/ 29 30static void node_status_response(struct subnet_record *subrec, 31 struct response_record *rrec, struct packet_struct *p) 32{ 33 struct nmb_packet *nmb = &p->packet.nmb; 34 struct nmb_name *question_name = &rrec->packet->packet.nmb.question.question_name; 35 struct nmb_name *answer_name = &nmb->answers->rr_name; 36 37 /* Sanity check. Ensure that the answer name in the incoming packet is the 38 same as the requested name in the outgoing packet. */ 39 40 if(!nmb_name_equal(question_name, answer_name)) { 41 DEBUG(0,("node_status_response: Answer name %s differs from question \ 42name %s.\n", nmb_namestr(answer_name), nmb_namestr(question_name))); 43 return; 44 } 45 46 DEBUG(5,("node_status_response: response from name %s on subnet %s.\n", 47 nmb_namestr(answer_name), subrec->subnet_name)); 48 49 /* Just send the whole answer resource record for the success function to parse. */ 50 if(rrec->success_fn) 51 (*(node_status_success_function)rrec->success_fn)(subrec, rrec->userdata, nmb->answers, p->ip); 52 53 /* Ensure we don't retry. */ 54 remove_response_record(subrec, rrec); 55} 56 57/**************************************************************************** 58 Deal with a timeout when requesting a node status. 59****************************************************************************/ 60 61static void node_status_timeout_response(struct subnet_record *subrec, 62 struct response_record *rrec) 63{ 64 struct nmb_packet *sent_nmb = &rrec->packet->packet.nmb; 65 struct nmb_name *question_name = &sent_nmb->question.question_name; 66 67 DEBUG(5,("node_status_timeout_response: failed to get node status from name %s on subnet %s\n", 68 nmb_namestr(question_name), subrec->subnet_name)); 69 70 if( rrec->fail_fn) 71 (*rrec->fail_fn)(subrec, rrec); 72 73 /* Ensure we don't retry. */ 74 remove_response_record(subrec, rrec); 75} 76 77/**************************************************************************** 78 Try and do a node status to a name - given the name & IP address. 79****************************************************************************/ 80 81BOOL node_status(struct subnet_record *subrec, struct nmb_name *nmbname, 82 struct in_addr send_ip, node_status_success_function success_fn, 83 node_status_fail_function fail_fn, struct userdata_struct *userdata) 84{ 85 if(queue_node_status( subrec, node_status_response, node_status_timeout_response, 86 success_fn, fail_fn, userdata, nmbname, send_ip)==NULL) { 87 DEBUG(0,("node_status: Failed to send packet trying to get node status for \ 88name %s, IP address %s\n", nmb_namestr(nmbname), inet_ntoa(send_ip))); 89 return True; 90 } 91 return False; 92} 93