print-sunrpc.c revision 1.3 
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
22#include <sys/cdefs.h>
23#ifndef lint
24#if 0
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#else
28__RCSID("$NetBSD: print-sunrpc.c,v 1.3 2013/04/06 19:33:08 christos Exp $");
29#endif
30#endif
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
36/*
37 * At least on HP-UX:
38 *
39 *	1) getrpcbynumber() is declared in <netdb.h>, not any of the RPC
40 *	   header files
41 *
42 * and
43 *
44 *	2) if _XOPEN_SOURCE_EXTENDED is defined, <netdb.h> doesn't declare
45 *	   it
46 *
47 * so we undefine it.
48 */
49#undef _XOPEN_SOURCE_EXTENDED
50
51#include <tcpdump-stdinc.h>
52
53#if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
54#include <rpc/rpc.h>
55#ifdef HAVE_RPC_RPCENT_H
56#include <rpc/rpcent.h>
57#endif /* HAVE_RPC_RPCENT_H */
58#endif /* defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H) */
59
60#include <stdio.h>
61#include <string.h>
62
63#include "interface.h"
64#include "addrtoname.h"
65#include "extract.h"
66
67#include "ip.h"
68#ifdef INET6
69#include "ip6.h"
70#endif
71
72#include "rpc_auth.h"
73#include "rpc_msg.h"
74#include "pmap_prot.h"
75
76static struct tok proc2str[] = {
77	{ SUNRPC_PMAPPROC_NULL,		"null" },
78	{ SUNRPC_PMAPPROC_SET,		"set" },
79	{ SUNRPC_PMAPPROC_UNSET,	"unset" },
80	{ SUNRPC_PMAPPROC_GETPORT,	"getport" },
81	{ SUNRPC_PMAPPROC_DUMP,		"dump" },
82	{ SUNRPC_PMAPPROC_CALLIT,	"call" },
83	{ 0,				NULL }
84};
85
86/* Forwards */
87static char *progstr(u_int32_t);
88
89void
90sunrpcrequest_print(register const u_char *bp, register u_int length,
91		    register const u_char *bp2)
92{
93	register const struct sunrpc_msg *rp;
94	register const struct ip *ip;
95#ifdef INET6
96	register const struct ip6_hdr *ip6;
97#endif
98	u_int32_t x;
99	char srcid[20], dstid[20];	/*fits 32bit*/
100
101	rp = (struct sunrpc_msg *)bp;
102
103	if (!nflag) {
104		snprintf(srcid, sizeof(srcid), "0x%x",
105		    EXTRACT_32BITS(&rp->rm_xid));
106		strlcpy(dstid, "sunrpc", sizeof(dstid));
107	} else {
108		snprintf(srcid, sizeof(srcid), "0x%x",
109		    EXTRACT_32BITS(&rp->rm_xid));
110		snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
111	}
112
113	switch (IP_V((struct ip *)bp2)) {
114	case 4:
115		ip = (struct ip *)bp2;
116		printf("%s.%s > %s.%s: %d",
117		    ipaddr_string(&ip->ip_src), srcid,
118		    ipaddr_string(&ip->ip_dst), dstid, length);
119		break;
120#ifdef INET6
121	case 6:
122		ip6 = (struct ip6_hdr *)bp2;
123		printf("%s.%s > %s.%s: %d",
124		    ip6addr_string(&ip6->ip6_src), srcid,
125		    ip6addr_string(&ip6->ip6_dst), dstid, length);
126		break;
127#endif
128	default:
129		printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
130		break;
131	}
132
133	printf(" %s", tok2str(proc2str, " proc #%u",
134	    EXTRACT_32BITS(&rp->rm_call.cb_proc)));
135	x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
136	if (x != 2)
137		printf(" [rpcver %u]", x);
138
139	switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
140
141	case SUNRPC_PMAPPROC_SET:
142	case SUNRPC_PMAPPROC_UNSET:
143	case SUNRPC_PMAPPROC_GETPORT:
144	case SUNRPC_PMAPPROC_CALLIT:
145		x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
146		if (!nflag)
147			printf(" %s", progstr(x));
148		else
149			printf(" %u", x);
150		printf(".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers));
151		break;
152	}
153}
154
155static char *
156progstr(prog)
157	u_int32_t prog;
158{
159#if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
160	register struct rpcent *rp;
161#endif
162	static char buf[32];
163	static u_int32_t lastprog = 0;
164
165	if (lastprog != 0 && prog == lastprog)
166		return (buf);
167#if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
168	rp = getrpcbynumber(prog);
169	if (rp == NULL)
170#endif
171		(void) snprintf(buf, sizeof(buf), "#%u", prog);
172#if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
173	else
174		strlcpy(buf, rp->r_name, sizeof(buf));
175#endif
176	return (buf);
177}
178