1 /*
2 * Copyright (c) 2013 Romain Francoise <romain@orebokech.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the project nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 /* \summary: MS Network Load Balancing's (NLB) heartbeat printer */
30
31 #ifdef HAVE_CONFIG_H
32 #include <config.h>
33 #endif
34
35 #include "netdissect-stdinc.h"
36
37 #include "netdissect.h"
38 #include "addrtoname.h"
39 #include "extract.h"
40
41 struct msnlb_heartbeat_pkt {
42 nd_byte unknown1[4];
43 nd_byte unknown2[4];
44 nd_uint32_t host_prio; /* little-endian */
45 nd_ipv4 virtual_ip;
46 nd_ipv4 host_ip;
47 /* the protocol is undocumented so we ignore the rest */
48 };
49
50 void
msnlb_print(netdissect_options * ndo,const u_char * bp)51 msnlb_print(netdissect_options *ndo, const u_char *bp)
52 {
53 const struct msnlb_heartbeat_pkt *hb;
54
55 ndo->ndo_protocol = "msnlb";
56 hb = (const struct msnlb_heartbeat_pkt *)bp;
57
58 ND_PRINT("MS NLB heartbeat");
59 ND_PRINT(", host priority: %u", GET_LE_U_4((hb->host_prio)));
60 ND_PRINT(", cluster IP: %s", GET_IPADDR_STRING(hb->virtual_ip));
61 ND_PRINT(", host IP: %s", GET_IPADDR_STRING(hb->host_ip));
62 }
63