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 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  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 #include "netdissect.h"
  54 #include "addrtoname.h"
  55 #include "extract.h"
  56
  57 #include "ip.h"
  58 #include "ip6.h"
  59
  60 #include "rpc_auth.h"
  61 #include "rpc_msg.h"
  62
  63 /*
  64  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  65  * unrestricted use provided that this legend is included on all tape
  66  * media and as a part of the software program in whole or part.  Users
  67  * may copy or modify Sun RPC without charge, but are not authorized
  68  * to license or distribute it to anyone else except as part of a product or
  69  * program developed by the user.
  70  *
  71  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  72  * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  73  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  74  *
  75  * Sun RPC is provided with no support and without any obligation on the
  76  * part of Sun Microsystems, Inc. to assist in its use, correction,
  77  * modification or enhancement.
  78  *
  79  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  80  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  81  * OR ANY PART THEREOF.
  82  *
  83  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  84  * or profits or other special, indirect and consequential damages, even if
  85  * Sun has been advised of the possibility of such damages.
  86  *
  87  * Sun Microsystems, Inc.
  88  * 2550 Garcia Avenue
  89  * Mountain View, California  94043
  90  *
  91  *      from: @(#)pmap_prot.h 1.14 88/02/08 SMI
  92  *      from: @(#)pmap_prot.h   2.1 88/07/29 4.0 RPCSRC
  93  * $FreeBSD: src/include/rpc/pmap_prot.h,v 1.9.2.1 1999/08/29 14:39:05 peter Exp $
  94  */
  95
  96 /*
  97  * pmap_prot.h
  98  * Protocol for the local binder service, or pmap.
  99  *
 100  * Copyright (C) 1984, Sun Microsystems, Inc.
 101  *
 102  * The following procedures are supported by the protocol:
 103  *
 104  * PMAPPROC_NULL() returns ()
 105  *      takes nothing, returns nothing
 106  *
 107  * PMAPPROC_SET(struct pmap) returns (bool_t)
 108  *      TRUE is success, FALSE is failure.  Registers the tuple
 109  *      [prog, vers, prot, port].
 110  *
 111  * PMAPPROC_UNSET(struct pmap) returns (bool_t)
 112  *      TRUE is success, FALSE is failure.  Un-registers pair
 113  *      [prog, vers].  prot and port are ignored.
 114  *
 115  * PMAPPROC_GETPORT(struct pmap) returns (long unsigned).
 116  *      0 is failure.  Otherwise returns the port number where the pair
 117  *      [prog, vers] is registered.  It may lie!
 118  *
 119  * PMAPPROC_DUMP() RETURNS (struct pmaplist *)
 120  *
 121  * PMAPPROC_CALLIT(unsigned, unsigned, unsigned, string<>)
 122  *      RETURNS (port, string<>);
 123  * usage: encapsulatedresults = PMAPPROC_CALLIT(prog, vers, proc, encapsulatedargs);
 124  *      Calls the procedure on the local machine.  If it is not registered,
 125  *      this procedure is quite; ie it does not return error information!!!
 126  *      This procedure only is supported on rpc/udp and calls via
 127  *      rpc/udp.  This routine only passes null authentication parameters.
 128  *      This file has no interface to xdr routines for PMAPPROC_CALLIT.
 129  *
 130  * The service supports remote procedure calls on udp/ip or tcp/ip socket 111.
 131  */
 132
 133 #define SUNRPC_PMAPPORT         ((uint16_t)111)
 134 #define SUNRPC_PMAPPROG         ((uint32_t)100000)
 135 #define SUNRPC_PMAPVERS         ((uint32_t)2)
 136 #define SUNRPC_PMAPVERS_PROTO   ((uint32_t)2)
 137 #define SUNRPC_PMAPVERS_ORIG    ((uint32_t)1)
 138 #define SUNRPC_PMAPPROC_NULL    ((uint32_t)0)
 139 #define SUNRPC_PMAPPROC_SET     ((uint32_t)1)
 140 #define SUNRPC_PMAPPROC_UNSET   ((uint32_t)2)
 141 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
 142 #define SUNRPC_PMAPPROC_DUMP    ((uint32_t)4)
 143 #define SUNRPC_PMAPPROC_CALLIT  ((uint32_t)5)
 144
 145 struct sunrpc_pmap {
 146         uint32_t pm_prog;
 147         uint32_t pm_vers;
 148         uint32_t pm_prot;
 149         uint32_t pm_port;
 150 };
 151
 152 static const struct tok proc2str[] = {
 153         { SUNRPC_PMAPPROC_NULL,         "null" },
 154         { SUNRPC_PMAPPROC_SET,          "set" },
 155         { SUNRPC_PMAPPROC_UNSET,        "unset" },
 156         { SUNRPC_PMAPPROC_GETPORT,      "getport" },
 157         { SUNRPC_PMAPPROC_DUMP,         "dump" },
 158         { SUNRPC_PMAPPROC_CALLIT,       "call" },
 159         { 0,                            NULL }
 160 };
 161
 162 /* Forwards */
 163 static char *progstr(uint32_t);
 164
 165 void
 166 sunrpcrequest_print(netdissect_options *ndo, register const u_char *bp,
 167                     register u_int length, register const u_char *bp2)
 168 {
 169         register const struct sunrpc_msg *rp;
 170         register const struct ip *ip;
 171         register const struct ip6_hdr *ip6;
 172         uint32_t x;
 173         char srcid[20], dstid[20];      /*fits 32bit*/
 174
 175         rp = (const struct sunrpc_msg *)bp;
 176
 177         if (!ndo->ndo_nflag) {
 178                 snprintf(srcid, sizeof(srcid), "0x%x",
 179                     EXTRACT_32BITS(&rp->rm_xid));
 180                 strlcpy(dstid, "sunrpc", sizeof(dstid));
 181         } else {
 182                 snprintf(srcid, sizeof(srcid), "0x%x",
 183                     EXTRACT_32BITS(&rp->rm_xid));
 184                 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
 185         }
 186
 187         switch (IP_V((const struct ip *)bp2)) {
 188         case 4:
 189                 ip = (const struct ip *)bp2;
 190                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 191                     ipaddr_string(ndo, &ip->ip_src), srcid,
 192                     ipaddr_string(ndo, &ip->ip_dst), dstid, length));
 193                 break;
 194         case 6:
 195                 ip6 = (const struct ip6_hdr *)bp2;
 196                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 197                     ip6addr_string(ndo, &ip6->ip6_src), srcid,
 198                     ip6addr_string(ndo, &ip6->ip6_dst), dstid, length));
 199                 break;
 200         default:
 201                 ND_PRINT((ndo, "%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length));
 202                 break;
 203         }
 204
 205         ND_PRINT((ndo, " %s", tok2str(proc2str, " proc #%u",
 206             EXTRACT_32BITS(&rp->rm_call.cb_proc))));
 207         x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
 208         if (x != 2)
 209                 ND_PRINT((ndo, " [rpcver %u]", x));
 210
 211         switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
 212
 213         case SUNRPC_PMAPPROC_SET:
 214         case SUNRPC_PMAPPROC_UNSET:
 215         case SUNRPC_PMAPPROC_GETPORT:
 216         case SUNRPC_PMAPPROC_CALLIT:
 217                 x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
 218                 if (!ndo->ndo_nflag)
 219                         ND_PRINT((ndo, " %s", progstr(x)));
 220                 else
 221                         ND_PRINT((ndo, " %u", x));
 222                 ND_PRINT((ndo, ".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers)));
 223                 break;
 224         }
 225 }
 226
 227 static char *
 228 progstr(uint32_t prog)
 229 {
 230 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 231         register struct rpcent *rp;
 232 #endif
 233         static char buf[32];
 234         static uint32_t lastprog = 0;
 235
 236         if (lastprog != 0 && prog == lastprog)
 237                 return (buf);
 238 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 239         rp = getrpcbynumber(prog);
 240         if (rp == NULL)
 241 #endif
 242                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 243 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 244         else
 245                 strlcpy(buf, rp->r_name, sizeof(buf));
 246 #endif
 247         return (buf);
 248 }