The Tcpdump Group git mirrors - tcpdump/blob - print-sunrpc.c

   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 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 /*
  29  * At least on HP-UX:
  30  *
  31  *      1) getrpcbynumber() is declared in <netdb.h>, not any of the RPC
  32  *         header files
  33  *
  34  * and
  35  *
  36  *      2) if _XOPEN_SOURCE_EXTENDED is defined, <netdb.h> doesn't declare
  37  *         it
  38  *
  39  * so we undefine it.
  40  */
  41 #undef _XOPEN_SOURCE_EXTENDED
  42
  43 #include "netdissect-stdinc.h"
  44
  45 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
  46 #include <rpc/rpc.h>
  47 #ifdef HAVE_RPC_RPCENT_H
  48 #include <rpc/rpcent.h>
  49 #endif /* HAVE_RPC_RPCENT_H */
  50 #endif /* defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H) */
  51
  52 #include <stdio.h>
  53 #include <string.h>
  54
  55 #define ND_LONGJMP_FROM_TCHECK
  56 #include "netdissect.h"
  57 #include "addrtoname.h"
  58 #include "extract.h"
  59
  60 #include "ip.h"
  61 #include "ip6.h"
  62
  63 #include "rpc_auth.h"
  64 #include "rpc_msg.h"
  65
  66 /*
  67  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  68  * unrestricted use provided that this legend is included on all tape
  69  * media and as a part of the software program in whole or part.  Users
  70  * may copy or modify Sun RPC without charge, but are not authorized
  71  * to license or distribute it to anyone else except as part of a product or
  72  * program developed by the user.
  73  *
  74  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  75  * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  76  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  77  *
  78  * Sun RPC is provided with no support and without any obligation on the
  79  * part of Sun Microsystems, Inc. to assist in its use, correction,
  80  * modification or enhancement.
  81  *
  82  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  83  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  84  * OR ANY PART THEREOF.
  85  *
  86  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  87  * or profits or other special, indirect and consequential damages, even if
  88  * Sun has been advised of the possibility of such damages.
  89  *
  90  * Sun Microsystems, Inc.
  91  * 2550 Garcia Avenue
  92  * Mountain View, California  94043
  93  *
  94  *      from: @(#)pmap_prot.h 1.14 88/02/08 SMI
  95  *      from: @(#)pmap_prot.h   2.1 88/07/29 4.0 RPCSRC
  96  * $FreeBSD: src/include/rpc/pmap_prot.h,v 1.9.2.1 1999/08/29 14:39:05 peter Exp $
  97  */
  98
  99 /*
 100  * pmap_prot.h
 101  * Protocol for the local binder service, or pmap.
 102  *
 103  * Copyright (C) 1984, Sun Microsystems, Inc.
 104  *
 105  * The following procedures are supported by the protocol:
 106  *
 107  * PMAPPROC_NULL() returns ()
 108  *      takes nothing, returns nothing
 109  *
 110  * PMAPPROC_SET(struct pmap) returns (bool_t)
 111  *      TRUE is success, FALSE is failure.  Registers the tuple
 112  *      [prog, vers, prot, port].
 113  *
 114  * PMAPPROC_UNSET(struct pmap) returns (bool_t)
 115  *      TRUE is success, FALSE is failure.  Un-registers pair
 116  *      [prog, vers].  prot and port are ignored.
 117  *
 118  * PMAPPROC_GETPORT(struct pmap) returns (long unsigned).
 119  *      0 is failure.  Otherwise returns the port number where the pair
 120  *      [prog, vers] is registered.  It may lie!
 121  *
 122  * PMAPPROC_DUMP() RETURNS (struct pmaplist *)
 123  *
 124  * PMAPPROC_CALLIT(unsigned, unsigned, unsigned, string<>)
 125  *      RETURNS (port, string<>);
 126  * usage: encapsulatedresults = PMAPPROC_CALLIT(prog, vers, proc, encapsulatedargs);
 127  *      Calls the procedure on the local machine.  If it is not registered,
 128  *      this procedure is quite; ie it does not return error information!!!
 129  *      This procedure only is supported on rpc/udp and calls via
 130  *      rpc/udp.  This routine only passes null authentication parameters.
 131  *      This file has no interface to xdr routines for PMAPPROC_CALLIT.
 132  *
 133  * The service supports remote procedure calls on udp/ip or tcp/ip socket 111.
 134  */
 135
 136 #define SUNRPC_PMAPPORT         ((uint16_t)111)
 137 #define SUNRPC_PMAPPROC_NULL    ((uint32_t)0)
 138 #define SUNRPC_PMAPPROC_SET     ((uint32_t)1)
 139 #define SUNRPC_PMAPPROC_UNSET   ((uint32_t)2)
 140 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
 141 #define SUNRPC_PMAPPROC_DUMP    ((uint32_t)4)
 142 #define SUNRPC_PMAPPROC_CALLIT  ((uint32_t)5)
 143
 144 static const struct tok proc2str[] = {
 145         { SUNRPC_PMAPPROC_NULL,         "null" },
 146         { SUNRPC_PMAPPROC_SET,          "set" },
 147         { SUNRPC_PMAPPROC_UNSET,        "unset" },
 148         { SUNRPC_PMAPPROC_GETPORT,      "getport" },
 149         { SUNRPC_PMAPPROC_DUMP,         "dump" },
 150         { SUNRPC_PMAPPROC_CALLIT,       "call" },
 151         { 0,                            NULL }
 152 };
 153
 154 /* Forwards */
 155 static char *progstr(uint32_t);
 156
 157 void
 158 sunrpc_print(netdissect_options *ndo, const u_char *bp,
 159                     u_int length, const u_char *bp2)
 160 {
 161         const struct sunrpc_msg *rp;
 162         const struct ip *ip;
 163         const struct ip6_hdr *ip6;
 164         uint32_t x;
 165         char srcid[20], dstid[20];      /*fits 32bit*/
 166
 167         ndo->ndo_protocol = "sunrpc";
 168         rp = (const struct sunrpc_msg *)bp;
 169         ND_TCHECK_SIZE(rp);
 170
 171         if (!ndo->ndo_nflag) {
 172                 snprintf(srcid, sizeof(srcid), "0x%x",
 173                     GET_BE_U_4(rp->rm_xid));
 174                 strlcpy(dstid, "sunrpc", sizeof(dstid));
 175         } else {
 176                 snprintf(srcid, sizeof(srcid), "0x%x",
 177                     GET_BE_U_4(rp->rm_xid));
 178                 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
 179         }
 180
 181         switch (IP_V((const struct ip *)bp2)) {
 182         case 4:
 183                 ip = (const struct ip *)bp2;
 184                 ND_PRINT("%s.%s > %s.%s: %u",
 185                     GET_IPADDR_STRING(ip->ip_src), srcid,
 186                     GET_IPADDR_STRING(ip->ip_dst), dstid, length);
 187                 break;
 188         case 6:
 189                 ip6 = (const struct ip6_hdr *)bp2;
 190                 ND_PRINT("%s.%s > %s.%s: %u",
 191                     GET_IP6ADDR_STRING(ip6->ip6_src), srcid,
 192                     GET_IP6ADDR_STRING(ip6->ip6_dst), dstid, length);
 193                 break;
 194         default:
 195                 ND_PRINT("%s.%s > %s.%s: %u", "?", srcid, "?", dstid, length);
 196                 break;
 197         }
 198
 199         ND_PRINT(" %s", tok2str(proc2str, " proc #%u",
 200             GET_BE_U_4(rp->rm_call.cb_proc)));
 201         x = GET_BE_U_4(rp->rm_call.cb_rpcvers);
 202         if (x != SUNRPC_MSG_VERSION)
 203                 ND_PRINT(" [rpcver %u]", x);
 204
 205         switch (GET_BE_U_4(rp->rm_call.cb_proc)) {
 206
 207         case SUNRPC_PMAPPROC_SET:
 208         case SUNRPC_PMAPPROC_UNSET:
 209         case SUNRPC_PMAPPROC_GETPORT:
 210         case SUNRPC_PMAPPROC_CALLIT:
 211                 x = GET_BE_U_4(rp->rm_call.cb_prog);
 212                 if (!ndo->ndo_nflag)
 213                         ND_PRINT(" %s", progstr(x));
 214                 else
 215                         ND_PRINT(" %u", x);
 216                 ND_PRINT(".%u", GET_BE_U_4(rp->rm_call.cb_vers));
 217                 break;
 218         }
 219 }
 220
 221 static char *
 222 progstr(uint32_t prog)
 223 {
 224 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 225         struct rpcent *rp;
 226 #endif
 227         static char buf[32];
 228         static uint32_t lastprog = 0;
 229
 230         if (lastprog != 0 && prog == lastprog)
 231                 return (buf);
 232 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 233         rp = getrpcbynumber(prog);
 234         if (rp != NULL)
 235                 strlcpy(buf, rp->r_name, sizeof(buf));
 236         else
 237 #endif
 238                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 239         lastprog = prog;
 240         return (buf);
 241 }