xref: /freebsd/contrib/tcpdump/print-sunrpc.c (revision 61afd5bb22d787b0641523e7b9b95c964d669bd5)
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 #ifndef lint
23 static char rcsid[] =
24     "@(#) $Header: print-sunrpc.c,v 1.24 96/07/23 14:17:27 leres Exp $ (LBL)";
25 #endif
26 
27 #include <sys/param.h>
28 #include <sys/time.h>
29 #include <sys/socket.h>
30 
31 #if __STDC__
32 struct mbuf;
33 struct rtentry;
34 #endif
35 #include <net/if.h>
36 
37 #include <netinet/in.h>
38 #include <net/ethernet.h>
39 #include <netinet/in_systm.h>
40 #include <netinet/ip.h>
41 #include <netinet/ip_var.h>
42 
43 #include <rpc/rpc.h>
44 #ifdef HAVE_RPC_RPCENT_H
45 #include <rpc/rpcent.h>
46 #endif
47 #include <rpc/pmap_prot.h>
48 
49 #include <ctype.h>
50 #include <netdb.h>
51 #include <stdio.h>
52 #include <string.h>
53 
54 #include "interface.h"
55 #include "addrtoname.h"
56 
57 static struct tok proc2str[] = {
58 	{ PMAPPROC_NULL,	"null" },
59 	{ PMAPPROC_SET,		"set" },
60 	{ PMAPPROC_UNSET,	"unset" },
61 	{ PMAPPROC_GETPORT,	"getport" },
62 	{ PMAPPROC_DUMP,	"dump" },
63 	{ PMAPPROC_CALLIT,	"call" },
64 	{ 0,			NULL }
65 };
66 
67 /* Forwards */
68 static char *progstr(u_int32_t);
69 
70 void
71 sunrpcrequest_print(register const u_char *bp, register u_int length,
72 		    register const u_char *bp2)
73 {
74 	register const struct rpc_msg *rp;
75 	register const struct ip *ip;
76 	u_int32_t x;
77 
78 	rp = (struct rpc_msg *)bp;
79 	ip = (struct ip *)bp2;
80 
81 	if (!nflag)
82 		(void)printf("%s.%x > %s.sunrpc: %d",
83 			     ipaddr_string(&ip->ip_src),
84 			     (u_int32_t)ntohl(rp->rm_xid),
85 			     ipaddr_string(&ip->ip_dst),
86 			     length);
87 	else
88 		(void)printf("%s.%x > %s.%x: %d",
89 			     ipaddr_string(&ip->ip_src),
90 			     (u_int32_t)ntohl(rp->rm_xid),
91 			     ipaddr_string(&ip->ip_dst),
92 			     PMAPPORT,
93 			     length);
94 	printf(" %s", tok2str(proc2str, " proc #%u",
95 	    (u_int32_t)ntohl(rp->rm_call.cb_proc)));
96 	x = ntohl(rp->rm_call.cb_rpcvers);
97 	if (x != 2)
98 		printf(" [rpcver %u]", x);
99 
100 	switch (ntohl(rp->rm_call.cb_proc)) {
101 
102 	case PMAPPROC_SET:
103 	case PMAPPROC_UNSET:
104 	case PMAPPROC_GETPORT:
105 	case PMAPPROC_CALLIT:
106 		x = ntohl(rp->rm_call.cb_prog);
107 		if (!nflag)
108 			printf(" %s", progstr(x));
109 		else
110 			printf(" %u", x);
111 		printf(".%u", (u_int32_t)ntohl(rp->rm_call.cb_vers));
112 		break;
113 	}
114 }
115 
116 static char *
117 progstr(prog)
118 	u_int32_t prog;
119 {
120 	register struct rpcent *rp;
121 	static char buf[32];
122 	static lastprog = 0;
123 
124 	if (lastprog != 0 && prog == lastprog)
125 		return (buf);
126 	rp = getrpcbynumber(prog);
127 	if (rp == NULL)
128 		(void) sprintf(buf, "#%u", prog);
129 	else
130 		strcpy(buf, rp->r_name);
131 	return (buf);
132 }
133