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 #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  * Copyright (c) 2009, Sun Microsystems, Inc.
  66  * All rights reserved.
  67  *
  68  * Redistribution and use in source and binary forms, with or without
  69  * modification, are permitted provided that the following conditions are met:
  70  * - Redistributions of source code must retain the above copyright notice,
  71  *   this list of conditions and the following disclaimer.
  72  * - Redistributions in binary form must reproduce the above copyright notice,
  73  *   this list of conditions and the following disclaimer in the documentation
  74  *   and/or other materials provided with the distribution.
  75  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  76  *   contributors may be used to endorse or promote products derived
  77  *   from this software without specific prior written permission.
  78  *
  79  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  80  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  81  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  82  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  83  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  84  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  85  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  86  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  87  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  88  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  89  * POSSIBILITY OF SUCH DAMAGE.
  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_PMAPPROC_NULL    ((uint32_t)0)
 135 #define SUNRPC_PMAPPROC_SET     ((uint32_t)1)
 136 #define SUNRPC_PMAPPROC_UNSET   ((uint32_t)2)
 137 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
 138 #define SUNRPC_PMAPPROC_DUMP    ((uint32_t)4)
 139 #define SUNRPC_PMAPPROC_CALLIT  ((uint32_t)5)
 140
 141 static const struct tok proc2str[] = {
 142         { SUNRPC_PMAPPROC_NULL,         "null" },
 143         { SUNRPC_PMAPPROC_SET,          "set" },
 144         { SUNRPC_PMAPPROC_UNSET,        "unset" },
 145         { SUNRPC_PMAPPROC_GETPORT,      "getport" },
 146         { SUNRPC_PMAPPROC_DUMP,         "dump" },
 147         { SUNRPC_PMAPPROC_CALLIT,       "call" },
 148         { 0,                            NULL }
 149 };
 150
 151 /* Forwards */
 152 static char *progstr(uint32_t);
 153
 154 void
 155 sunrpc_print(netdissect_options *ndo, const u_char *bp,
 156                     u_int length, const u_char *bp2)
 157 {
 158         const struct sunrpc_msg *rp;
 159         const struct ip *ip;
 160         const struct ip6_hdr *ip6;
 161         uint32_t x;
 162         char srcid[20], dstid[20];      /*fits 32bit*/
 163
 164         ndo->ndo_protocol = "sunrpc";
 165         rp = (const struct sunrpc_msg *)bp;
 166         ND_TCHECK_SIZE(rp);
 167
 168         if (!ndo->ndo_nflag) {
 169                 snprintf(srcid, sizeof(srcid), "0x%x",
 170                     GET_BE_U_4(rp->rm_xid));
 171                 strlcpy(dstid, "sunrpc", sizeof(dstid));
 172         } else {
 173                 snprintf(srcid, sizeof(srcid), "0x%x",
 174                     GET_BE_U_4(rp->rm_xid));
 175                 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
 176         }
 177
 178         switch (IP_V((const struct ip *)bp2)) {
 179         case 4:
 180                 ip = (const struct ip *)bp2;
 181                 ND_PRINT("%s.%s > %s.%s: %u",
 182                     GET_IPADDR_STRING(ip->ip_src), srcid,
 183                     GET_IPADDR_STRING(ip->ip_dst), dstid, length);
 184                 break;
 185         case 6:
 186                 ip6 = (const struct ip6_hdr *)bp2;
 187                 ND_PRINT("%s.%s > %s.%s: %u",
 188                     GET_IP6ADDR_STRING(ip6->ip6_src), srcid,
 189                     GET_IP6ADDR_STRING(ip6->ip6_dst), dstid, length);
 190                 break;
 191         default:
 192                 ND_PRINT("%s.%s > %s.%s: %u", "?", srcid, "?", dstid, length);
 193                 break;
 194         }
 195
 196         ND_PRINT(" %s", tok2str(proc2str, " proc #%u",
 197             GET_BE_U_4(rp->rm_call.cb_proc)));
 198         x = GET_BE_U_4(rp->rm_call.cb_rpcvers);
 199         if (x != SUNRPC_MSG_VERSION)
 200                 ND_PRINT(" [rpcver %u]", x);
 201
 202         switch (GET_BE_U_4(rp->rm_call.cb_proc)) {
 203
 204         case SUNRPC_PMAPPROC_SET:
 205         case SUNRPC_PMAPPROC_UNSET:
 206         case SUNRPC_PMAPPROC_GETPORT:
 207         case SUNRPC_PMAPPROC_CALLIT:
 208                 x = GET_BE_U_4(rp->rm_call.cb_prog);
 209                 if (!ndo->ndo_nflag)
 210                         ND_PRINT(" %s", progstr(x));
 211                 else
 212                         ND_PRINT(" %u", x);
 213                 ND_PRINT(".%u", GET_BE_U_4(rp->rm_call.cb_vers));
 214                 break;
 215         }
 216 }
 217
 218 static char *
 219 progstr(uint32_t prog)
 220 {
 221 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 222         struct rpcent *rp;
 223 #endif
 224         static char buf[32];
 225         static uint32_t lastprog = 0;
 226
 227         if (lastprog != 0 && prog == lastprog)
 228                 return (buf);
 229 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 230         rp = getrpcbynumber(prog);
 231         if (rp != NULL)
 232                 strlcpy(buf, rp->r_name, sizeof(buf));
 233         else
 234 #endif
 235                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 236         lastprog = prog;
 237         return (buf);
 238 }