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[] =
  24     "@(#) $Header: /tcpdump/master/tcpdump/print-sunrpc.c,v 1.39 2000-10-07 05:53:13 itojun Exp $ (LBL)";
  25 #endif
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include <sys/param.h>
  32 #include <sys/time.h>
  33 #include <sys/socket.h>
  34
  35 struct mbuf;
  36 struct rtentry;
  37
  38 #include <netinet/in.h>
  39
  40 #include <rpc/rpc.h>
  41 #ifdef HAVE_RPC_RPCENT_H
  42 #include <rpc/rpcent.h>
  43 #endif
  44 #include <rpc/pmap_prot.h>
  45
  46 #include <ctype.h>
  47 #include <netdb.h>
  48 #include <stdio.h>
  49 #include <string.h>
  50
  51 #include "interface.h"
  52 #include "addrtoname.h"
  53
  54 #include "ip.h"
  55 #ifdef INET6
  56 #include "ip6.h"
  57 #endif
  58
  59 static struct tok proc2str[] = {
  60         { PMAPPROC_NULL,        "null" },
  61         { PMAPPROC_SET,         "set" },
  62         { PMAPPROC_UNSET,       "unset" },
  63         { PMAPPROC_GETPORT,     "getport" },
  64         { PMAPPROC_DUMP,        "dump" },
  65         { PMAPPROC_CALLIT,      "call" },
  66         { 0,                    NULL }
  67 };
  68
  69 /* Forwards */
  70 static char *progstr(u_int32_t);
  71
  72 void
  73 sunrpcrequest_print(register const u_char *bp, register u_int length,
  74                     register const u_char *bp2)
  75 {
  76         register const struct rpc_msg *rp;
  77         register const struct ip *ip;
  78 #ifdef INET6
  79         register const struct ip6_hdr *ip6;
  80 #endif
  81         u_int32_t x;
  82         char srcid[20], dstid[20];      /*fits 32bit*/
  83
  84         rp = (struct rpc_msg *)bp;
  85
  86         if (!nflag) {
  87                 snprintf(srcid, sizeof(srcid), "0x%x",
  88                     (u_int32_t)ntohl(rp->rm_xid));
  89                 strlcpy(dstid, "sunrpc", sizeof(dstid));
  90         } else {
  91                 snprintf(srcid, sizeof(srcid), "0x%x",
  92                     (u_int32_t)ntohl(rp->rm_xid));
  93                 snprintf(dstid, sizeof(dstid), "0x%x", PMAPPORT);
  94         }
  95
  96         switch (IP_V((struct ip *)bp2)) {
  97         case 4:
  98                 ip = (struct ip *)bp2;
  99                 printf("%s.%s > %s.%s: %d",
 100                     ipaddr_string(&ip->ip_src), srcid,
 101                     ipaddr_string(&ip->ip_dst), dstid, length);
 102                 break;
 103 #ifdef INET6
 104         case 6:
 105                 ip6 = (struct ip6_hdr *)bp2;
 106                 printf("%s.%s > %s.%s: %d",
 107                     ip6addr_string(&ip6->ip6_src), srcid,
 108                     ip6addr_string(&ip6->ip6_dst), dstid, length);
 109                 break;
 110 #endif
 111         default:
 112                 printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
 113                 break;
 114         }
 115
 116         printf(" %s", tok2str(proc2str, " proc #%u",
 117             (u_int32_t)ntohl(rp->rm_call.cb_proc)));
 118         x = ntohl(rp->rm_call.cb_rpcvers);
 119         if (x != 2)
 120                 printf(" [rpcver %u]", x);
 121
 122         switch (ntohl(rp->rm_call.cb_proc)) {
 123
 124         case PMAPPROC_SET:
 125         case PMAPPROC_UNSET:
 126         case PMAPPROC_GETPORT:
 127         case PMAPPROC_CALLIT:
 128                 x = ntohl(rp->rm_call.cb_prog);
 129                 if (!nflag)
 130                         printf(" %s", progstr(x));
 131                 else
 132                         printf(" %u", x);
 133                 printf(".%u", (u_int32_t)ntohl(rp->rm_call.cb_vers));
 134                 break;
 135         }
 136 }
 137
 138 static char *
 139 progstr(prog)
 140         u_int32_t prog;
 141 {
 142         register struct rpcent *rp;
 143         static char buf[32];
 144         static int lastprog = 0;
 145
 146         if (lastprog != 0 && prog == lastprog)
 147                 return (buf);
 148         rp = getrpcbynumber(prog);
 149         if (rp == NULL)
 150                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 151         else
 152                 strlcpy(buf, rp->r_name, sizeof(buf));
 153         return (buf);
 154 }