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 #ifndef lint
  23 static const char rcsid[] _U_ =
  24     "@(#) $Header: /tcpdump/master/tcpdump/print-sunrpc.c,v 1.43.2.2 2003-11-16 08:51:47 guy Exp $ (LBL)";
  25 #endif
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include <tcpdump-stdinc.h>
  32
  33 #include <rpc/rpc.h>
  34 #ifdef HAVE_RPC_RPCENT_H
  35 #include <rpc/rpcent.h>
  36 #endif
  37 #ifndef WIN32
  38 #include <rpc/pmap_prot.h>
  39 #endif /* WIN32 */
  40
  41 #include <stdio.h>
  42 #include <string.h>
  43
  44 #include "interface.h"
  45 #include "addrtoname.h"
  46 #include "extract.h"
  47
  48 #include "ip.h"
  49 #ifdef INET6
  50 #include "ip6.h"
  51 #endif
  52
  53 static struct tok proc2str[] = {
  54         { PMAPPROC_NULL,        "null" },
  55         { PMAPPROC_SET,         "set" },
  56         { PMAPPROC_UNSET,       "unset" },
  57         { PMAPPROC_GETPORT,     "getport" },
  58         { PMAPPROC_DUMP,        "dump" },
  59         { PMAPPROC_CALLIT,      "call" },
  60         { 0,                    NULL }
  61 };
  62
  63 /* Forwards */
  64 static char *progstr(u_int32_t);
  65
  66 void
  67 sunrpcrequest_print(register const u_char *bp, register u_int length,
  68                     register const u_char *bp2)
  69 {
  70         register const struct rpc_msg *rp;
  71         register const struct ip *ip;
  72 #ifdef INET6
  73         register const struct ip6_hdr *ip6;
  74 #endif
  75         u_int32_t x;
  76         char srcid[20], dstid[20];      /*fits 32bit*/
  77
  78         rp = (struct rpc_msg *)bp;
  79
  80         if (!nflag) {
  81                 snprintf(srcid, sizeof(srcid), "0x%x",
  82                     EXTRACT_32BITS(&rp->rm_xid));
  83                 strlcpy(dstid, "sunrpc", sizeof(dstid));
  84         } else {
  85                 snprintf(srcid, sizeof(srcid), "0x%x",
  86                     EXTRACT_32BITS(&rp->rm_xid));
  87                 snprintf(dstid, sizeof(dstid), "0x%x", PMAPPORT);
  88         }
  89
  90         switch (IP_V((struct ip *)bp2)) {
  91         case 4:
  92                 ip = (struct ip *)bp2;
  93                 printf("%s.%s > %s.%s: %d",
  94                     ipaddr_string(&ip->ip_src), srcid,
  95                     ipaddr_string(&ip->ip_dst), dstid, length);
  96                 break;
  97 #ifdef INET6
  98         case 6:
  99                 ip6 = (struct ip6_hdr *)bp2;
 100                 printf("%s.%s > %s.%s: %d",
 101                     ip6addr_string(&ip6->ip6_src), srcid,
 102                     ip6addr_string(&ip6->ip6_dst), dstid, length);
 103                 break;
 104 #endif
 105         default:
 106                 printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
 107                 break;
 108         }
 109
 110         printf(" %s", tok2str(proc2str, " proc #%u",
 111             EXTRACT_32BITS(&rp->rm_call.cb_proc)));
 112         x = EXTRACT_32BITS(&rp->rm_call.cb_rpcvers);
 113         if (x != 2)
 114                 printf(" [rpcver %u]", x);
 115
 116         switch (EXTRACT_32BITS(&rp->rm_call.cb_proc)) {
 117
 118         case PMAPPROC_SET:
 119         case PMAPPROC_UNSET:
 120         case PMAPPROC_GETPORT:
 121         case PMAPPROC_CALLIT:
 122                 x = EXTRACT_32BITS(&rp->rm_call.cb_prog);
 123                 if (!nflag)
 124                         printf(" %s", progstr(x));
 125                 else
 126                         printf(" %u", x);
 127                 printf(".%u", EXTRACT_32BITS(&rp->rm_call.cb_vers));
 128                 break;
 129         }
 130 }
 131
 132 static char *
 133 progstr(prog)
 134         u_int32_t prog;
 135 {
 136 #ifndef WIN32
 137         register struct rpcent *rp;
 138 #endif
 139         static char buf[32];
 140         static u_int32_t lastprog = 0;
 141
 142         if (lastprog != 0 && prog == lastprog)
 143                 return (buf);
 144 #ifndef WIN32
 145         rp = getrpcbynumber(prog);
 146         if (rp == NULL)
 147 #endif /* WIN32 */
 148                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 149 #ifndef WIN32
 150         else
 151                 strlcpy(buf, rp->r_name, sizeof(buf));
 152 #endif
 153         return (buf);
 154 }