usr/src/cmd/ipf/lib/common/getportproto.c

   1 /*
   2  * Copyright (C) 1993-2005  by Darren Reed.
   3  * See the IPFILTER.LICENCE file for details on licencing.
   4  */
   5
   6 #include <ctype.h>
   7 #include "ipf.h"
   8
   9 int getportproto(name, proto)
  10 char *name;
  11 int proto;
  12 {
  13         struct servent *s;
  14         struct protoent *p;
  15
  16         if (ISDIGIT(*name)) {
  17                 int number;
  18                 char *s;
  19
  20                 for (s = name; *s != '\0'; s++)
  21                         if (!ISDIGIT(*s))
  22                                 return -1;
  23
  24                 number = atoi(name);
  25                 if (number < 0 || number > 65535)
  26                         return -1;
  27                 return htons(number);
  28         }
  29
  30         p = getprotobynumber(proto);
  31         s = getservbyname(name, p ? p->p_name : NULL);
  32         if (s != NULL)
  33                 return s->s_port;
  34         return -1;
  35 }