contrib/tcpdump/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 #include "netdissect.h"
  56 #include "addrtoname.h"
  57 #include "extract.h"
  58
  59 #include "ip.h"
  60 #include "ip6.h"
  61
  62 #include "rpc_auth.h"
  63 #include "rpc_msg.h"
  64
  65 /*
  66  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  67  * unrestricted use provided that this legend is included on all tape
  68  * media and as a part of the software program in whole or part.  Users
  69  * may copy or modify Sun RPC without charge, but are not authorized
  70  * to license or distribute it to anyone else except as part of a product or
  71  * program developed by the user.
  72  *
  73  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  74  * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  75  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  76  *
  77  * Sun RPC is provided with no support and without any obligation on the
  78  * part of Sun Microsystems, Inc. to assist in its use, correction,
  79  * modification or enhancement.
  80  *
  81  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  82  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  83  * OR ANY PART THEREOF.
  84  *
  85  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  86  * or profits or other special, indirect and consequential damages, even if
  87  * Sun has been advised of the possibility of such damages.
  88  *
  89  * Sun Microsystems, Inc.
  90  * 2550 Garcia Avenue
  91  * Mountain View, California  94043
  92  *
  93  *      from: @(#)pmap_prot.h 1.14 88/02/08 SMI
  94  *      from: @(#)pmap_prot.h   2.1 88/07/29 4.0 RPCSRC
  95  * $FreeBSD: src/include/rpc/pmap_prot.h,v 1.9.2.1 1999/08/29 14:39:05 peter Exp $
  96  */
  97
  98 /*
  99  * pmap_prot.h
 100  * Protocol for the local binder service, or pmap.
 101  *
 102  * Copyright (C) 1984, Sun Microsystems, Inc.
 103  *
 104  * The following procedures are supported by the protocol:
 105  *
 106  * PMAPPROC_NULL() returns ()
 107  *      takes nothing, returns nothing
 108  *
 109  * PMAPPROC_SET(struct pmap) returns (bool_t)
 110  *      TRUE is success, FALSE is failure.  Registers the tuple
 111  *      [prog, vers, prot, port].
 112  *
 113  * PMAPPROC_UNSET(struct pmap) returns (bool_t)
 114  *      TRUE is success, FALSE is failure.  Un-registers pair
 115  *      [prog, vers].  prot and port are ignored.
 116  *
 117  * PMAPPROC_GETPORT(struct pmap) returns (long unsigned).
 118  *      0 is failure.  Otherwise returns the port number where the pair
 119  *      [prog, vers] is registered.  It may lie!
 120  *
 121  * PMAPPROC_DUMP() RETURNS (struct pmaplist *)
 122  *
 123  * PMAPPROC_CALLIT(unsigned, unsigned, unsigned, string<>)
 124  *      RETURNS (port, string<>);
 125  * usage: encapsulatedresults = PMAPPROC_CALLIT(prog, vers, proc, encapsulatedargs);
 126  *      Calls the procedure on the local machine.  If it is not registered,
 127  *      this procedure is quite; ie it does not return error information!!!
 128  *      This procedure only is supported on rpc/udp and calls via
 129  *      rpc/udp.  This routine only passes null authentication parameters.
 130  *      This file has no interface to xdr routines for PMAPPROC_CALLIT.
 131  *
 132  * The service supports remote procedure calls on udp/ip or tcp/ip socket 111.
 133  */
 134
 135 #define SUNRPC_PMAPPORT         ((uint16_t)111)
 136 #define SUNRPC_PMAPPROG         ((uint32_t)100000)
 137 #define SUNRPC_PMAPVERS         ((uint32_t)2)
 138 #define SUNRPC_PMAPVERS_PROTO   ((uint32_t)2)
 139 #define SUNRPC_PMAPVERS_ORIG    ((uint32_t)1)
 140 #define SUNRPC_PMAPPROC_NULL    ((uint32_t)0)
 141 #define SUNRPC_PMAPPROC_SET     ((uint32_t)1)
 142 #define SUNRPC_PMAPPROC_UNSET   ((uint32_t)2)
 143 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
 144 #define SUNRPC_PMAPPROC_DUMP    ((uint32_t)4)
 145 #define SUNRPC_PMAPPROC_CALLIT  ((uint32_t)5)
 146
 147 struct sunrpc_pmap {
 148         uint32_t pm_prog;
 149         uint32_t pm_vers;
 150         uint32_t pm_prot;
 151         uint32_t pm_port;
 152 };
 153
 154 static const struct tok proc2str[] = {
 155         { SUNRPC_PMAPPROC_NULL,         "null" },
 156         { SUNRPC_PMAPPROC_SET,          "set" },
 157         { SUNRPC_PMAPPROC_UNSET,        "unset" },
 158         { SUNRPC_PMAPPROC_GETPORT,      "getport" },
 159         { SUNRPC_PMAPPROC_DUMP,         "dump" },
 160         { SUNRPC_PMAPPROC_CALLIT,       "call" },
 161         { 0,                            NULL }
 162 };
 163
 164 /* Forwards */
 165 static char *progstr(uint32_t);
 166
 167 void
 168 sunrpcrequest_print(netdissect_options *ndo, register const u_char *bp,
 169                     register u_int length, register const u_char *bp2)
 170 {
 171         register const struct sunrpc_msg *rp;
 172         register const struct ip *ip;
 173         register const struct ip6_hdr *ip6;
 174         uint32_t x;
 175         char srcid[20], dstid[20];      /*fits 32bit*/
 176
 177         rp = (const struct sunrpc_msg *)bp;
 178
 179         if (!ndo->ndo_nflag) {
 180                 snprintf(srcid, sizeof(srcid), "0x%x",
 181                     EXTRACT_32BITS(&rp->rm_xid));
 182                 strlcpy(dstid, "sunrpc", sizeof(dstid));
 183         } else {
 184                 snprintf(srcid, sizeof(srcid), "0x%x",
 185                     EXTRACT_32BITS(&rp->rm_xid));
 186                 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
 187         }
 188
 189         switch (IP_V((const struct ip *)bp2)) {
 190         case 4:
 191                 ip = (const struct ip *)bp2;
 192                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 193                     ipaddr_string(ndo, &ip->ip_src), srcid,
 194                     ipaddr_string(ndo, &ip->ip_dst), dstid, length));
 195                 break;
 196         case 6:
 197                 ip6 = (const struct ip6_hdr *)bp2;
 198                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 199                     ip6addr_string(ndo, &ip6->ip6_src), srcid,
 200                     ip6addr_string(ndo, &ip6->ip6_dst), dstid, length));
 201                 break;
 202         default:
 203                 ND_PRINT((ndo, "%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length));
 204                 break;
 205         }
 206
 207         ND_PRINT((ndo, " %s", tok2str(proc2str, " proc #%u",
 208             EXTRACT_32BITS(&rp->rm_call.cb_proc))));
 209         x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
 210         if (x != 2)
 211                 ND_PRINT((ndo, " [rpcver %u]", x));
 212
 213         switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
 214
 215         case SUNRPC_PMAPPROC_SET:
 216         case SUNRPC_PMAPPROC_UNSET:
 217         case SUNRPC_PMAPPROC_GETPORT:
 218         case SUNRPC_PMAPPROC_CALLIT:
 219                 x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
 220                 if (!ndo->ndo_nflag)
 221                         ND_PRINT((ndo, " %s", progstr(x)));
 222                 else
 223                         ND_PRINT((ndo, " %u", x));
 224                 ND_PRINT((ndo, ".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers)));
 225                 break;
 226         }
 227 }
 228
 229 static char *
 230 progstr(uint32_t prog)
 231 {
 232 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 233         register struct rpcent *rp;
 234 #endif
 235         static char buf[32];
 236         static uint32_t lastprog = 0;
 237
 238         if (lastprog != 0 && prog == lastprog)
 239                 return (buf);
 240 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 241         rp = getrpcbynumber(prog);
 242         if (rp == NULL)
 243 #endif
 244                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 245 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 246         else
 247                 strlcpy(buf, rp->r_name, sizeof(buf));
 248 #endif
 249         return (buf);
 250 }