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 1.42 2002-09-05 00:00:22 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
  47 #include "ip.h"
  48 #ifdef INET6
  49 #include "ip6.h"
  50 #endif
  51
  52 static struct tok proc2str[] = {
  53         { PMAPPROC_NULL,        "null" },
  54         { PMAPPROC_SET,         "set" },
  55         { PMAPPROC_UNSET,       "unset" },
  56         { PMAPPROC_GETPORT,     "getport" },
  57         { PMAPPROC_DUMP,        "dump" },
  58         { PMAPPROC_CALLIT,      "call" },
  59         { 0,                    NULL }
  60 };
  61
  62 /* Forwards */
  63 static char *progstr(u_int32_t);
  64
  65 void
  66 sunrpcrequest_print(register const u_char *bp, register u_int length,
  67                     register const u_char *bp2)
  68 {
  69         register const struct rpc_msg *rp;
  70         register const struct ip *ip;
  71 #ifdef INET6
  72         register const struct ip6_hdr *ip6;
  73 #endif
  74         u_int32_t x;
  75         char srcid[20], dstid[20];      /*fits 32bit*/
  76
  77         rp = (struct rpc_msg *)bp;
  78
  79         if (!nflag) {
  80                 snprintf(srcid, sizeof(srcid), "0x%x",
  81                     (u_int32_t)ntohl(rp->rm_xid));
  82                 strlcpy(dstid, "sunrpc", sizeof(dstid));
  83         } else {
  84                 snprintf(srcid, sizeof(srcid), "0x%x",
  85                     (u_int32_t)ntohl(rp->rm_xid));
  86                 snprintf(dstid, sizeof(dstid), "0x%x", PMAPPORT);
  87         }
  88
  89         switch (IP_V((struct ip *)bp2)) {
  90         case 4:
  91                 ip = (struct ip *)bp2;
  92                 printf("%s.%s > %s.%s: %d",
  93                     ipaddr_string(&ip->ip_src), srcid,
  94                     ipaddr_string(&ip->ip_dst), dstid, length);
  95                 break;
  96 #ifdef INET6
  97         case 6:
  98                 ip6 = (struct ip6_hdr *)bp2;
  99                 printf("%s.%s > %s.%s: %d",
 100                     ip6addr_string(&ip6->ip6_src), srcid,
 101                     ip6addr_string(&ip6->ip6_dst), dstid, length);
 102                 break;
 103 #endif
 104         default:
 105                 printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
 106                 break;
 107         }
 108
 109         printf(" %s", tok2str(proc2str, " proc #%u",
 110             (u_int32_t)ntohl(rp->rm_call.cb_proc)));
 111         x = ntohl(rp->rm_call.cb_rpcvers);
 112         if (x != 2)
 113                 printf(" [rpcver %u]", x);
 114
 115         switch (ntohl(rp->rm_call.cb_proc)) {
 116
 117         case PMAPPROC_SET:
 118         case PMAPPROC_UNSET:
 119         case PMAPPROC_GETPORT:
 120         case PMAPPROC_CALLIT:
 121                 x = ntohl(rp->rm_call.cb_prog);
 122                 if (!nflag)
 123                         printf(" %s", progstr(x));
 124                 else
 125                         printf(" %u", x);
 126                 printf(".%u", (u_int32_t)ntohl(rp->rm_call.cb_vers));
 127                 break;
 128         }
 129 }
 130
 131 static char *
 132 progstr(prog)
 133         u_int32_t prog;
 134 {
 135 #ifndef WIN32
 136         register struct rpcent *rp;
 137 #endif
 138         static char buf[32];
 139         static u_int32_t lastprog = 0;
 140
 141         if (lastprog != 0 && prog == lastprog)
 142                 return (buf);
 143 #ifndef WIN32
 144         rp = getrpcbynumber(prog);
 145         if (rp == NULL)
 146 #endif /* WIN32 */
 147                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 148 #ifndef WIN32
 149         else
 150                 strlcpy(buf, rp->r_name, sizeof(buf));
 151 #endif
 152         return (buf);
 153 }