contrib/ipfilter/lib/gethost.c

   1 /*      $FreeBSD$       */
   2
   3 /*
   4  * Copyright (C) 2012 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  * $Id$
   9  */
  10
  11 #include "ipf.h"
  12
  13 int gethost(family, name, hostp)
  14         int family;
  15         char *name;
  16         i6addr_t *hostp;
  17 {
  18         struct hostent *h;
  19         struct netent *n;
  20         u_32_t addr;
  21
  22         bzero(hostp, sizeof(*hostp));
  23         if (!strcmp(name, "test.host.dots")) {
  24                 if (family == AF_INET) {
  25                         hostp->in4.s_addr = htonl(0xfedcba98);
  26                 }
  27 #ifdef USE_INET6
  28                 if (family == AF_INET6) {
  29                         hostp->i6[0] = htonl(0xfe80aa55);
  30                         hostp->i6[1] = htonl(0x12345678);
  31                         hostp->i6[2] = htonl(0x5a5aa5a5);
  32                         hostp->i6[3] = htonl(0xfedcba98);
  33                 }
  34 #endif
  35                 return 0;
  36         }
  37
  38         if (!strcmp(name, "<thishost>"))
  39                 name = thishost;
  40
  41         if (family == AF_INET) {
  42                 h = gethostbyname(name);
  43                 if (h != NULL) {
  44                         if ((h->h_addr != NULL) &&
  45                             (h->h_length == sizeof(addr))) {
  46                                 bcopy(h->h_addr, (char *)&addr, sizeof(addr));
  47                                 hostp->in4.s_addr = addr;
  48                                 return 0;
  49                         }
  50                 }
  51
  52                 n = getnetbyname(name);
  53                 if (n != NULL) {
  54                         hostp->in4.s_addr = htonl(n->n_net & 0xffffffff);
  55                         return 0;
  56                 }
  57         }
  58 #ifdef USE_INET6
  59         if (family == AF_INET6) {
  60                 struct addrinfo hints, *res;
  61                 struct sockaddr_in6 *sin6;
  62
  63                 bzero((char *)&hints, sizeof(hints));
  64                 hints.ai_family = PF_INET6;
  65
  66                 getaddrinfo(name, NULL, &hints, &res);
  67                 if (res != NULL) {
  68                         sin6 = (struct sockaddr_in6 *)res->ai_addr;
  69                         hostp->in6 = sin6->sin6_addr;
  70                         freeaddrinfo(res);
  71                         return 0;
  72                 }
  73         }
  74 #endif
  75         return -1;
  76 }