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 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <tcpdump-stdinc.h>
34
35 #include <stdio.h>
36 #include <string.h>
37
38 #include "netdissect.h"
39 #include "addrtoname.h"
40 #include "extract.h"
41
42 struct msnlb_heartbeat_pkt {
43 u_int32_t unknown1;
44 u_int32_t unknown2;
45 u_int32_t host_prio; /* little-endian */
46 u_int32_t virtual_ip;
47 u_int32_t host_ip;
48 /* the protocol is undocumented so we ignore the rest */
49 };
50
51 void
msnlb_print(netdissect_options * ndo,const u_char * bp)52 msnlb_print(netdissect_options *ndo, const u_char *bp)
53 {
54 const struct msnlb_heartbeat_pkt *hb;
55
56 hb = (struct msnlb_heartbeat_pkt *)bp;
57 ND_TCHECK(*hb);
58
59 ND_PRINT((ndo, "MS NLB heartbeat, host priority: %u,",
60 EXTRACT_LE_32BITS(&(hb->host_prio))));
61 ND_PRINT((ndo, " cluster IP: %s,", ipaddr_string(&(hb->virtual_ip))));
62 ND_PRINT((ndo, " host IP: %s", ipaddr_string(&(hb->host_ip))));
63 return;
64 trunc:
65 ND_PRINT((ndo, "[|MS NLB]"));
66 }
67