xref: /openbsd-src/usr.sbin/tcpdump/print-sunrpc.c (revision 46035553bfdd96e63c94e32da0210227ec2e3cf1)
1 /*	$OpenBSD: print-sunrpc.c,v 1.20 2015/11/16 00:16:39 mmcc Exp $	*/
2 
3 /*
4  * Copyright (c) 1992, 1993, 1994, 1995, 1996
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that: (1) source code distributions
9  * retain the above copyright notice and this paragraph in its entirety, (2)
10  * distributions including binary code include the above copyright notice and
11  * this paragraph in its entirety in the documentation or other materials
12  * provided with the distribution, and (3) all advertising materials mentioning
13  * features or use of this software display the following acknowledgement:
14  * ``This product includes software developed by the University of California,
15  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16  * the University nor the names of its contributors may be used to endorse
17  * or promote products derived from this software without specific prior
18  * written permission.
19  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22  */
23 
24 #include <sys/time.h>
25 #include <sys/socket.h>
26 
27 struct mbuf;
28 struct rtentry;
29 #include <net/if.h>
30 
31 #include <netinet/in.h>
32 #include <netinet/if_ether.h>
33 #include <netinet/ip.h>
34 #include <netinet/ip_var.h>
35 
36 #include <rpc/rpc.h>
37 #ifdef HAVE_RPC_RPCENT_H
38 #include <rpc/rpcent.h>
39 #endif
40 #include <rpc/pmap_prot.h>
41 
42 #include <ctype.h>
43 #include <netdb.h>
44 #include <stdio.h>
45 #include <string.h>
46 
47 #include "interface.h"
48 #include "addrtoname.h"
49 #include "privsep.h"
50 
51 static struct tok proc2str[] = {
52 	{ PMAPPROC_NULL,	"null" },
53 	{ PMAPPROC_SET,		"set" },
54 	{ PMAPPROC_UNSET,	"unset" },
55 	{ PMAPPROC_GETPORT,	"getport" },
56 	{ PMAPPROC_DUMP,	"dump" },
57 	{ PMAPPROC_CALLIT,	"call" },
58 	{ 0,			NULL }
59 };
60 
61 /* Forwards */
62 static char *progstr(u_int32_t);
63 
64 void
65 sunrpcrequest_print(const u_char *bp, u_int length, const u_char *bp2)
66 {
67 	const struct rpc_msg *rp;
68 	const struct ip *ip;
69 	u_int32_t x;
70 
71 	rp = (struct rpc_msg *)bp;
72 	ip = (struct ip *)bp2;
73 
74 	printf("xid 0x%x %d", (u_int32_t)ntohl(rp->rm_xid), length);
75 	printf(" %s", tok2str(proc2str, " proc #%u",
76 	    (u_int32_t)ntohl(rp->rm_call.cb_proc)));
77 	x = ntohl(rp->rm_call.cb_rpcvers);
78 	if (x != 2)
79 		printf(" [rpcver %u]", x);
80 
81 	switch (ntohl(rp->rm_call.cb_proc)) {
82 
83 	case PMAPPROC_SET:
84 	case PMAPPROC_UNSET:
85 	case PMAPPROC_GETPORT:
86 	case PMAPPROC_CALLIT:
87 		x = ntohl(rp->rm_call.cb_prog);
88 		if (!nflag)
89 			printf(" %s", progstr(x));
90 		else
91 			printf(" %u", x);
92 		printf(".%u", (u_int32_t)ntohl(rp->rm_call.cb_vers));
93 		break;
94 	}
95 }
96 
97 static char *
98 progstr(prog)
99 	u_int32_t prog;
100 {
101 	char progname[32];
102 	static char buf[32];
103 	static int lastprog = 0;
104 
105 	if (lastprog != 0 && prog == lastprog)
106 		return (buf);
107 	lastprog = prog;
108         if (priv_getrpcbynumber(prog, progname, sizeof(progname)) == 0)
109 		snprintf(buf, sizeof(buf), "#%u", prog);
110 	else
111 		strlcpy(buf, progname, sizeof(buf));
112 	return (buf);
113 }
114