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