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 #define NETDISSECT_REWORKED
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 /*
  28  * At least on HP-UX:
  29  *
  30  *      1) getrpcbynumber() is declared in <netdb.h>, not any of the RPC
  31  *         header files
  32  *
  33  * and
  34  *
  35  *      2) if _XOPEN_SOURCE_EXTENDED is defined, <netdb.h> doesn't declare
  36  *         it
  37  *
  38  * so we undefine it.
  39  */
  40 #undef _XOPEN_SOURCE_EXTENDED
  41
  42 #include <tcpdump-stdinc.h>
  43
  44 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
  45 #include <rpc/rpc.h>
  46 #ifdef HAVE_RPC_RPCENT_H
  47 #include <rpc/rpcent.h>
  48 #endif /* HAVE_RPC_RPCENT_H */
  49 #endif /* defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H) */
  50
  51 #include <stdio.h>
  52 #include <string.h>
  53
  54 #include "interface.h"
  55 #include "addrtoname.h"
  56 #include "extract.h"
  57
  58 #include "ip.h"
  59 #ifdef INET6
  60 #include "ip6.h"
  61 #endif
  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_PMAPPROG         ((uint32_t)100000)
 138 #define SUNRPC_PMAPVERS         ((uint32_t)2)
 139 #define SUNRPC_PMAPVERS_PROTO   ((uint32_t)2)
 140 #define SUNRPC_PMAPVERS_ORIG    ((uint32_t)1)
 141 #define SUNRPC_PMAPPROC_NULL    ((uint32_t)0)
 142 #define SUNRPC_PMAPPROC_SET     ((uint32_t)1)
 143 #define SUNRPC_PMAPPROC_UNSET   ((uint32_t)2)
 144 #define SUNRPC_PMAPPROC_GETPORT ((uint32_t)3)
 145 #define SUNRPC_PMAPPROC_DUMP    ((uint32_t)4)
 146 #define SUNRPC_PMAPPROC_CALLIT  ((uint32_t)5)
 147
 148 struct sunrpc_pmap {
 149         uint32_t pm_prog;
 150         uint32_t pm_vers;
 151         uint32_t pm_prot;
 152         uint32_t pm_port;
 153 };
 154
 155 static const struct tok proc2str[] = {
 156         { SUNRPC_PMAPPROC_NULL,         "null" },
 157         { SUNRPC_PMAPPROC_SET,          "set" },
 158         { SUNRPC_PMAPPROC_UNSET,        "unset" },
 159         { SUNRPC_PMAPPROC_GETPORT,      "getport" },
 160         { SUNRPC_PMAPPROC_DUMP,         "dump" },
 161         { SUNRPC_PMAPPROC_CALLIT,       "call" },
 162         { 0,                            NULL }
 163 };
 164
 165 /* Forwards */
 166 static char *progstr(uint32_t);
 167
 168 void
 169 sunrpcrequest_print(netdissect_options *ndo, register const u_char *bp,
 170                     register u_int length, register const u_char *bp2)
 171 {
 172         register const struct sunrpc_msg *rp;
 173         register const struct ip *ip;
 174 #ifdef INET6
 175         register const struct ip6_hdr *ip6;
 176 #endif
 177         uint32_t x;
 178         char srcid[20], dstid[20];      /*fits 32bit*/
 179
 180         rp = (struct sunrpc_msg *)bp;
 181
 182         if (!ndo->ndo_nflag) {
 183                 snprintf(srcid, sizeof(srcid), "0x%x",
 184                     EXTRACT_32BITS(&rp->rm_xid));
 185                 strlcpy(dstid, "sunrpc", sizeof(dstid));
 186         } else {
 187                 snprintf(srcid, sizeof(srcid), "0x%x",
 188                     EXTRACT_32BITS(&rp->rm_xid));
 189                 snprintf(dstid, sizeof(dstid), "0x%x", SUNRPC_PMAPPORT);
 190         }
 191
 192         switch (IP_V((struct ip *)bp2)) {
 193         case 4:
 194                 ip = (struct ip *)bp2;
 195                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 196                     ipaddr_string(ndo, &ip->ip_src), srcid,
 197                     ipaddr_string(ndo, &ip->ip_dst), dstid, length));
 198                 break;
 199 #ifdef INET6
 200         case 6:
 201                 ip6 = (struct ip6_hdr *)bp2;
 202                 ND_PRINT((ndo, "%s.%s > %s.%s: %d",
 203                     ip6addr_string(ndo, &ip6->ip6_src), srcid,
 204                     ip6addr_string(ndo, &ip6->ip6_dst), dstid, length));
 205                 break;
 206 #endif
 207         default:
 208                 ND_PRINT((ndo, "%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length));
 209                 break;
 210         }
 211
 212         ND_PRINT((ndo, " %s", tok2str(proc2str, " proc #%u",
 213             EXTRACT_32BITS(&rp->rm_call.cb_proc))));
 214         x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
 215         if (x != 2)
 216                 ND_PRINT((ndo, " [rpcver %u]", x));
 217
 218         switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
 219
 220         case SUNRPC_PMAPPROC_SET:
 221         case SUNRPC_PMAPPROC_UNSET:
 222         case SUNRPC_PMAPPROC_GETPORT:
 223         case SUNRPC_PMAPPROC_CALLIT:
 224                 x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
 225                 if (!ndo->ndo_nflag)
 226                         ND_PRINT((ndo, " %s", progstr(x)));
 227                 else
 228                         ND_PRINT((ndo, " %u", x));
 229                 ND_PRINT((ndo, ".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers)));
 230                 break;
 231         }
 232 }
 233
 234 static char *
 235 progstr(uint32_t prog)
 236 {
 237 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 238         register struct rpcent *rp;
 239 #endif
 240         static char buf[32];
 241         static uint32_t lastprog = 0;
 242
 243         if (lastprog != 0 && prog == lastprog)
 244                 return (buf);
 245 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 246         rp = getrpcbynumber(prog);
 247         if (rp == NULL)
 248 #endif
 249                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 250 #if defined(HAVE_GETRPCBYNUMBER) && defined(HAVE_RPC_RPC_H)
 251         else
 252                 strlcpy(buf, rp->r_name, sizeof(buf));
 253 #endif
 254         return (buf);
 255 }