dist/ipf/lib/getportproto.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2002-2005 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  * Id: getportproto.c,v 1.2.4.4 2006/06/16 17:21:00 darrenr Exp
   9  */
  10
  11 #include <ctype.h>
  12 #include "ipf.h"
  13
  14 int getportproto(name, proto)
  15 char *name;
  16 int proto;
  17 {
  18         struct servent *s;
  19         struct protoent *p;
  20
  21         if (ISDIGIT(*name)) {
  22                 int number;
  23                 char *s;
  24
  25                 for (s = name; *s != '\0'; s++)
  26                         if (!ISDIGIT(*s))
  27                                 return -1;
  28
  29                 number = atoi(name);
  30                 if (number < 0 || number > 65535)
  31                         return -1;
  32                 return htons(number);
  33         }
  34
  35         p = getprotobynumber(proto);
  36         s = getservbyname(name, p ? p->p_name : NULL);
  37         if (s != NULL)
  38                 return s->s_port;
  39         return -1;
  40 }