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

   1 /*
   2  * Copyright (C) 1993-2005  by Darren Reed.
   3  *
   4  * See the IPFILTER.LICENCE file for details on licencing.
   5  *
   6  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   7  * Use is subject to license terms.
   8  */
   9
  10 #pragma ident   "%Z%%M% %I%     %E% SMI"
  11
  12 #include "ipf.h"
  13
  14 int gethost(name, hostp, use_inet6)
  15 char *name;
  16 i6addr_t *hostp;
  17 int use_inet6;
  18 {
  19         struct addrinfo hints, *ai;
  20         struct netent *n;
  21         int error;
  22
  23         if (!strcmp(name, "test.host.dots")) {
  24                 hostp->in4.s_addr = htonl(0xfedcba98);
  25                 return 0;
  26         }
  27
  28         if (!strcmp(name, "<thishost>"))
  29                 name = thishost;
  30
  31         bzero(&hints, sizeof (hints));
  32         if (use_inet6 == 0)
  33                 hints.ai_family = AF_INET;
  34         else
  35                 hints.ai_family = AF_INET6;
  36
  37         error = getaddrinfo(name, NULL, &hints, &ai);
  38
  39         if ((error == 0) && (ai != NULL) && (ai->ai_addr != NULL)) {
  40                 switch (ai->ai_family)
  41                 {
  42                         case AF_INET:
  43                                 hostp->in4 = ((struct sockaddr_in *)
  44                                     ai->ai_addr)->sin_addr;
  45                                 break;
  46                         case AF_INET6:
  47                                 hostp->in6 = ((struct sockaddr_in6 *)
  48                                     ai->ai_addr)->sin6_addr;
  49                                 break;
  50                         default:
  51                                 break;
  52                 }
  53                 freeaddrinfo(ai);
  54                 return 0;
  55         }
  56
  57         if (ai != NULL)
  58                 freeaddrinfo(ai);
  59
  60         if (use_inet6 == 0) {
  61                 n = getnetbyname(name);
  62                 if (n != NULL) {
  63                         hostp->in4.s_addr = htonl(n->n_net);
  64                         return 0;
  65                 }
  66         }
  67         return -1;
  68 }