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 1.33 2000-07-01 03:39:10 assar 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 #include <net/if.h>
  38
  39 #include <netinet/in.h>
  40 #include <netinet/if_ether.h>
  41 #include <netinet/in_systm.h>
  42 #include <netinet/ip.h>
  43 #include <netinet/ip_var.h>
  44 #ifdef INET6
  45 #include <netinet/ip6.h>
  46 #endif
  47
  48 #include <rpc/rpc.h>
  49 #ifdef HAVE_RPC_RPCENT_H
  50 #include <rpc/rpcent.h>
  51 #endif
  52 #include <rpc/pmap_prot.h>
  53
  54 #include <ctype.h>
  55 #include <netdb.h>
  56 #include <stdio.h>
  57 #include <string.h>
  58
  59 #include "interface.h"
  60 #include "addrtoname.h"
  61
  62 static struct tok proc2str[] = {
  63         { PMAPPROC_NULL,        "null" },
  64         { PMAPPROC_SET,         "set" },
  65         { PMAPPROC_UNSET,       "unset" },
  66         { PMAPPROC_GETPORT,     "getport" },
  67         { PMAPPROC_DUMP,        "dump" },
  68         { PMAPPROC_CALLIT,      "call" },
  69         { 0,                    NULL }
  70 };
  71
  72 /* Forwards */
  73 static char *progstr(u_int32_t);
  74
  75 void
  76 sunrpcrequest_print(register const u_char *bp, register u_int length,
  77                     register const u_char *bp2)
  78 {
  79         register const struct rpc_msg *rp;
  80         register const struct ip *ip;
  81 #ifdef INET6
  82         register const struct ip6_hdr *ip6;
  83 #endif
  84         u_int32_t x;
  85         char srcid[20], dstid[20];      /*fits 32bit*/
  86
  87         rp = (struct rpc_msg *)bp;
  88
  89         if (!nflag) {
  90                 snprintf(srcid, sizeof(srcid), "0x%x",
  91                     (u_int32_t)ntohl(rp->rm_xid));
  92                 strlcpy(dstid, "sunrpc", sizeof(dstid));
  93         } else {
  94                 snprintf(srcid, sizeof(srcid), "0x%x",
  95                     (u_int32_t)ntohl(rp->rm_xid));
  96                 snprintf(dstid, sizeof(dstid), "0x%x", PMAPPORT);
  97         }
  98
  99         switch (((struct ip *)bp2)->ip_v) {
 100         case 4:
 101                 ip = (struct ip *)bp2;
 102                 printf("%s.%s > %s.%s: %d",
 103                     ipaddr_string(&ip->ip_src), srcid,
 104                     ipaddr_string(&ip->ip_dst), dstid, length);
 105                 break;
 106 #ifdef INET6
 107         case 6:
 108                 ip6 = (struct ip6_hdr *)bp2;
 109                 printf("%s.%s > %s.%s: %d",
 110                     ip6addr_string(&ip6->ip6_src), srcid,
 111                     ip6addr_string(&ip6->ip6_dst), dstid, length);
 112                 break;
 113 #endif
 114         default:
 115                 printf("%s.%s > %s.%s: %d", "?", srcid, "?", dstid, length);
 116                 break;
 117         }
 118
 119         printf(" %s", tok2str(proc2str, " proc #%u",
 120             (u_int32_t)ntohl(rp->rm_call.cb_proc)));
 121         x = ntohl(rp->rm_call.cb_rpcvers);
 122         if (x != 2)
 123                 printf(" [rpcver %u]", x);
 124
 125         switch (ntohl(rp->rm_call.cb_proc)) {
 126
 127         case PMAPPROC_SET:
 128         case PMAPPROC_UNSET:
 129         case PMAPPROC_GETPORT:
 130         case PMAPPROC_CALLIT:
 131                 x = ntohl(rp->rm_call.cb_prog);
 132                 if (!nflag)
 133                         printf(" %s", progstr(x));
 134                 else
 135                         printf(" %u", x);
 136                 printf(".%u", (u_int32_t)ntohl(rp->rm_call.cb_vers));
 137                 break;
 138         }
 139 }
 140
 141 static char *
 142 progstr(prog)
 143         u_int32_t prog;
 144 {
 145         register struct rpcent *rp;
 146         static char buf[32];
 147         static int lastprog = 0;
 148
 149         if (lastprog != 0 && prog == lastprog)
 150                 return (buf);
 151         rp = getrpcbynumber(prog);
 152         if (rp == NULL)
 153                 (void) snprintf(buf, sizeof(buf), "#%u", prog);
 154         else
 155                 strlcpy(buf, rp->r_name, sizeof(buf));
 156         return (buf);
 157 }