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 /* \summary: Sun Remote Procedure Call printer */
23
24 #include <config.h>
25
26 /*
27 * At least on HP-UX:
28 *
29 * 1) getrpcbynumber() is declared in <netdb.h>, not any of the RPC
30 * header files
31 *
32 * and
33 *
34 * 2) if _XOPEN_SOURCE_EXTENDED is defined, <netdb.h> doesn't declare
35 * it
36 *
37 * so we undefine it.
38 */
39 #undef _XOPEN_SOURCE_EXTENDED
40
41 #include "netdissect-stdinc.h"
42
43 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
44 #include <rpc/rpc.h>
45 #ifdef HAVE_RPC_RPCENT_H
46 #include <rpc/rpcent.h>
47 #endif /* HAVE_RPC_RPCENT_H */
48 #endif /* defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H) */
49
50 #include <stdio.h>
51 #include <string.h>
52
53 #define ND_LONGJMP_FROM_TCHECK
54 #include "netdissect.h"
55 #include "addrtoname.h"
56 #include "extract.h"
57
58 #include "ip.h"
59 #include "ip6.h"
60
61 #include "rpc_auth.h"
62 #include "rpc_msg.h"
63
64 /*
65 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
66 * unrestricted use provided that this legend is included on all tape
67 * media and as a part of the software program in whole or part. Users
68 * may copy or modify Sun RPC without charge, but are not authorized
69 * to license or distribute it to anyone else except as part of a product or
70 * program developed by the user.
71 *
72 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
73 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
74 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
75 *
76 * Sun RPC is provided with no support and without any obligation on the
77 * part of Sun Microsystems, Inc. to assist in its use, correction,
78 * modification or enhancement.
79 *
80 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
81 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
82 * OR ANY PART THEREOF.
83 *
84 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
85 * or profits or other special, indirect and consequential damages, even if
86 * Sun has been advised of the possibility of such damages.
87 *
88 * Sun Microsystems, Inc.
89 * 2550 Garcia Avenue
90 * Mountain View, California 94043
91 *
92 * from: @(#)pmap_prot.h 1.14 88/02/08 SMI
93 * from: @(#)pmap_prot.h 2.1 88/07/29 4.0 RPCSRC
94 * $FreeBSD: projects/clang400-import/contrib/tcpdump/print-sunrpc.c 276788 2015-01-07 19:55:18Z delphij $
95 */
96
97 /*
98 * pmap_prot.h
99 * Protocol for the local binder service, or pmap.
100 *
101 * Copyright (C) 1984, Sun Microsystems, Inc.
102 *
103 * The following procedures are supported by the protocol:
104 *
105 * PMAPPROC_NULL() returns ()
106 * takes nothing, returns nothing
107 *
108 * PMAPPROC_SET(struct pmap) returns (bool_t)
109 * TRUE is success, FALSE is failure. Registers the tuple
110 * [prog, vers, prot, port].
111 *
112 * PMAPPROC_UNSET(struct pmap) returns (bool_t)
113 * TRUE is success, FALSE is failure. Un-registers pair
114 * [prog, vers]. prot and port are ignored.
115 *
116 * PMAPPROC_GETPORT(struct pmap) returns (long unsigned).
117 * 0 is failure. Otherwise returns the port number where the pair
118 * [prog, vers] is registered. It may lie!
119 *
120 * PMAPPROC_DUMP() RETURNS (struct pmaplist *)
121 *
122 * PMAPPROC_CALLIT(unsigned, unsigned, unsigned, string<>)
123 * RETURNS (port, string<>);
124 * usage: encapsulatedresults = PMAPPROC_CALLIT(prog, vers, proc, encapsulatedargs);
125 * Calls the procedure on the local machine. If it is not registered,
126 * this procedure is quite; ie it does not return error information!!!
127 * This procedure only is supported on rpc/udp and calls via
128 * rpc/udp. This routine only passes null authentication parameters.
129 * This file has no interface to xdr routines for PMAPPROC_CALLIT.
130 *
131 * The service supports remote procedure calls on udp/ip or tcp/ip socket 111.
132 */
133
134 #define SUNRPC_PMAPPORT ((uint16_t)111)
135 #define SUNRPC_PMAPPROC_NULL ((uint32_t)0)
136 #define SUNRPC_PMAPPROC_SET ((uint32_t)1)
137 #define SUNRPC_PMAPPROC_UNSET ((uint32_t)2)
138 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
139 #define SUNRPC_PMAPPROC_DUMP ((uint32_t)4)
140 #define SUNRPC_PMAPPROC_CALLIT ((uint32_t)5)
141
142 static const struct tok proc2str[] = {
143 { SUNRPC_PMAPPROC_NULL, "null" },
144 { SUNRPC_PMAPPROC_SET, "set" },
145 { SUNRPC_PMAPPROC_UNSET, "unset" },
146 { SUNRPC_PMAPPROC_GETPORT, "getport" },
147 { SUNRPC_PMAPPROC_DUMP, "dump" },
148 { SUNRPC_PMAPPROC_CALLIT, "call" },
149 { 0, NULL }
150 };
151
152 /* Forwards */
153 static char *progstr(uint32_t);
154
155 void
sunrpc_print(netdissect_options * ndo,const u_char * bp,u_int length,const u_char * bp2)156 sunrpc_print(netdissect_options *ndo, const u_char *bp,
157 u_int length, const u_char *bp2)
158 {
159 const struct sunrpc_msg *rp;
160 const struct ip *ip;
161 const struct ip6_hdr *ip6;
162 uint32_t x;
163 char srcid[20], dstid[20]; /*fits 32bit*/
164
165 ndo->ndo_protocol = "sunrpc";
166 rp = (const struct sunrpc_msg *)bp;
167 ND_TCHECK_SIZE(rp);
168
169 if (!ndo->ndo_nflag) {
170 snprintf(srcid, sizeof(srcid), "0x%x",
171 GET_BE_U_4(rp->rm_xid));
172 strlcpy(dstid, "sunrpc", sizeof(dstid));
173 } else {
174 snprintf(srcid, sizeof(srcid), "0x%x",
175 GET_BE_U_4(rp->rm_xid));
176 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
177 }
178
179 switch (IP_V((const struct ip *)bp2)) {
180 case 4:
181 ip = (const struct ip *)bp2;
182 ND_PRINT("%s.%s > %s.%s: %u",
183 GET_IPADDR_STRING(ip->ip_src), srcid,
184 GET_IPADDR_STRING(ip->ip_dst), dstid, length);
185 break;
186 case 6:
187 ip6 = (const struct ip6_hdr *)bp2;
188 ND_PRINT("%s.%s > %s.%s: %u",
189 GET_IP6ADDR_STRING(ip6->ip6_src), srcid,
190 GET_IP6ADDR_STRING(ip6->ip6_dst), dstid, length);
191 break;
192 default:
193 ND_PRINT("%s.%s > %s.%s: %u", "?", srcid, "?", dstid, length);
194 break;
195 }
196
197 ND_PRINT(" %s", tok2str(proc2str, " proc #%u",
198 GET_BE_U_4(rp->rm_call.cb_proc)));
199 x = GET_BE_U_4(rp->rm_call.cb_rpcvers);
200 if (x != SUNRPC_MSG_VERSION)
201 ND_PRINT(" [rpcver %u]", x);
202
203 switch (GET_BE_U_4(rp->rm_call.cb_proc)) {
204
205 case SUNRPC_PMAPPROC_SET:
206 case SUNRPC_PMAPPROC_UNSET:
207 case SUNRPC_PMAPPROC_GETPORT:
208 case SUNRPC_PMAPPROC_CALLIT:
209 x = GET_BE_U_4(rp->rm_call.cb_prog);
210 if (!ndo->ndo_nflag)
211 ND_PRINT(" %s", progstr(x));
212 else
213 ND_PRINT(" %u", x);
214 ND_PRINT(".%u", GET_BE_U_4(rp->rm_call.cb_vers));
215 break;
216 }
217 }
218
219 static char *
progstr(uint32_t prog)220 progstr(uint32_t prog)
221 {
222 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
223 struct rpcent *rp;
224 #endif
225 static char buf[32];
226 static uint32_t lastprog = 0;
227
228 if (lastprog != 0 && prog == lastprog)
229 return (buf);
230 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
231 rp = getrpcbynumber(prog);
232 if (rp != NULL)
233 strlcpy(buf, rp->r_name, sizeof(buf));
234 else
235 #endif
236 (void) snprintf(buf, sizeof(buf), "#%u", prog);
237 lastprog = prog;
238 return (buf);
239 }
240