Initial import

[samba] / source / nmbd / nmbd_nodestatus.c

diff --git a/source/nmbd/nmbd_nodestatus.c b/source/nmbd/nmbd_nodestatus.c
new file mode 100644 (file)
index 0000000..0ea5d6a
--- /dev/null
+++ b/source/nmbd/nmbd_nodestatus.c
@@ -0,0 +1,92 @@
+/* 
+   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 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"
+
+/****************************************************************************
+ 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;
+}