print-sunrpc.c revision 190207 
1/*
2 * Copyright (c) 1992, 1993, 1994, 1995, 1996
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * $FreeBSD: head/contrib/tcpdump/print-sunrpc.c 190207 2009-03-21 18:30:25Z rpaulo $
22 */
23
24#ifndef lint
25static const char rcsid[] _U_ =
26    "@(#) $Header: /tcpdump/master/tcpdump/print-sunrpc.c,v 1.47 2005-04-27 21:43:48 guy Exp $ (LBL)";
27#endif
28
29#ifdef HAVE_CONFIG_H
30#include "config.h"
31#endif
32
33#include <tcpdump-stdinc.h>
34
35#ifdef HAVE_GETRPCBYNUMBER
36#include <rpc/rpc.h>
37#ifdef HAVE_RPC_RPCENT_H
38#include <rpc/rpcent.h>
39#endif /* HAVE_RPC_RPCENT_H */
40#endif /* HAVE_GETRPCBYNUMBER */
41
42#include <stdio.h>
43#include <string.h>
44
45#include "interface.h"
46#include "addrtoname.h"
47#include "extract.h"
48
49#include "ip.h"
50#ifdef INET6
51#include "ip6.h"
52#endif
53
54#include "rpc_auth.h"
55#include "rpc_msg.h"
56#include "pmap_prot.h"
57
58static struct tok proc2str[] = {
59	{ SUNRPC_PMAPPROC_NULL,		"null" },
60	{ SUNRPC_PMAPPROC_SET,		"set" },
61	{ SUNRPC_PMAPPROC_UNSET,	"unset" },
62	{ SUNRPC_PMAPPROC_GETPORT,	"getport" },
63	{ SUNRPC_PMAPPROC_DUMP,		"dump" },
64	{ SUNRPC_PMAPPROC_CALLIT,	"call" },
65	{ 0,				NULL }
66};
67
68/* Forwards */
69static char *progstr(u_int32_t);
70
71void
72sunrpcrequest_print(register const u_char *bp, register u_int length,
73		    register const u_char *bp2)
74{
75	register const struct sunrpc_msg *rp;
76	register const struct ip *ip;
77#ifdef INET6
78	register const struct ip6_hdr *ip6;
79#endif
80	u_int32_t x;
81	char srcid[20], dstid[20];	/*fits 32bit*/
82
83	rp = (struct sunrpc_msg *)bp;
84
85	if (!nflag) {
86		snprintf(srcid, sizeof(srcid), "0x%x",
87		    EXTRACT_32BITS(&rp->rm_xid));
88		strlcpy(dstid, "sunrpc", sizeof(dstid));
89	} else {
90		snprintf(srcid, sizeof(srcid), "0x%x",
91		    EXTRACT_32BITS(&rp->rm_xid));
92		snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
93	}
94
95	switch (IP_V((struct ip *)bp2)) {
96	case 4:
97		ip = (struct ip *)bp2;
98		printf("%s.%s > %s.%s: %d",
99		    ipaddr_string(&ip->ip_src), srcid,
100		    ipaddr_string(&ip->ip_dst), dstid, length);
101		break;
102#ifdef INET6
103	case 6:
104		ip6 = (struct ip6_hdr *)bp2;
105		printf("%s.%s > %s.%s: %d",
106		    ip6addr_string(&ip6->ip6_src), srcid,
107		    ip6addr_string(&ip6->ip6_dst), dstid, length);
108		break;
109#endif
110	default:
111		printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
112		break;
113	}
114
115	printf(" %s", tok2str(proc2str, " proc #%u",
116	    EXTRACT_32BITS(&rp->rm_call.cb_proc)));
117	x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
118	if (x != 2)
119		printf(" [rpcver %u]", x);
120
121	switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
122
123	case SUNRPC_PMAPPROC_SET:
124	case SUNRPC_PMAPPROC_UNSET:
125	case SUNRPC_PMAPPROC_GETPORT:
126	case SUNRPC_PMAPPROC_CALLIT:
127		x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
128		if (!nflag)
129			printf(" %s", progstr(x));
130		else
131			printf(" %u", x);
132		printf(".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers));
133		break;
134	}
135}
136
137static char *
138progstr(prog)
139	u_int32_t prog;
140{
141#ifdef HAVE_GETRPCBYNUMBER
142	register struct rpcent *rp;
143#endif
144	static char buf[32];
145	static u_int32_t lastprog = 0;
146
147	if (lastprog != 0 && prog == lastprog)
148		return (buf);
149#ifdef HAVE_GETRPCBYNUMBER
150	rp = getrpcbynumber(prog);
151	if (rp == NULL)
152#endif
153		(void) snprintf(buf, sizeof(buf), "#%u", prog);
154#ifdef HAVE_GETRPCBYNUMBER
155	else
156		strlcpy(buf, rp->r_name, sizeof(buf));
157#endif
158	return (buf);
159}
160