contrib/ipfilter/lib/printproto.c

   1 /*
   2  * Copyright (C) 2012 by Darren Reed.
   3  *
   4  * See the IPFILTER.LICENCE file for details on licencing.
   5  */
   6
   7 #include "ipf.h"
   8
   9
  10 #if !defined(lint)
  11 static const char rcsid[] = "@(#)$Id$";
  12 #endif
  13
  14
  15 void
  16 printproto(pr, p, np)
  17         struct protoent *pr;
  18         int p;
  19         ipnat_t *np;
  20 {
  21         if (np != NULL) {
  22                 if ((np->in_flags & IPN_TCPUDP) == IPN_TCPUDP)
  23                         PRINTF("tcp/udp");
  24                 else if (np->in_flags & IPN_TCP)
  25                         PRINTF("tcp");
  26                 else if (np->in_flags & IPN_UDP)
  27                         PRINTF("udp");
  28                 else if (np->in_flags & IPN_ICMPQUERY)
  29                         PRINTF("icmp");
  30 #ifdef _AIX51
  31                 /*
  32                  * To make up for "ip = 252" and "hopopt = 0" in /etc/protocols
  33                  * The IANA has doubled up on the definition of 0 - it is now
  34                  * also used for IPv6 hop-opts, so we can no longer rely on
  35                  * /etc/protocols providing the correct name->number mapping.
  36                  */
  37 #endif
  38                 else if (np->in_pr[0] == 0)
  39                         PRINTF("ip");
  40                 else if (pr != NULL)
  41                         PRINTF("%s", pr->p_name);
  42                 else
  43                         PRINTF("%d", np->in_pr[0]);
  44         } else {
  45 #ifdef _AIX51
  46                 if (p == 0)
  47                         PRINTF("ip");
  48                 else
  49 #endif
  50                 if (pr != NULL)
  51                         PRINTF("%s", pr->p_name);
  52                 else
  53                         PRINTF("%d", p);
  54         }
  55 }