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         if (!strcmp(name, "test.host.dots")) {
  23                 if (family == AF_INET) {
  24                         hostp->in4.s_addr = htonl(0xfedcba98);
  25                 }
  26 #ifdef USE_INET6
  27                 if (family == AF_INET6) {
  28                         hostp->i6[0] = 0xfe80aa55;
  29                         hostp->i6[1] = 0x12345678;
  30                         hostp->i6[2] = 0x5a5aa5a5;
  31                         hostp->i6[3] = 0xfedcba98;
  32                 }
  33 #endif
  34                 return 0;
  35         }
  36
  37         if (!strcmp(name, "<thishost>"))
  38                 name = thishost;
  39
  40         if (family == AF_INET) {
  41                 h = gethostbyname(name);
  42                 if (h != NULL) {
  43                         if ((h->h_addr != NULL) &&
  44                             (h->h_length == sizeof(addr))) {
  45                                 bcopy(h->h_addr, (char *)&addr, sizeof(addr));
  46                                 hostp->in4.s_addr = addr;
  47                                 return 0;
  48                         }
  49                 }
  50
  51                 n = getnetbyname(name);
  52                 if (n != NULL) {
  53                         hostp->in4.s_addr = htonl(n->n_net & 0xffffffff);
  54                         return 0;
  55                 }
  56         }
  57 #ifdef USE_INET6
  58         if (family == AF_INET6) {
  59                 struct addrinfo hints, *res;
  60                 struct sockaddr_in6 *sin6;
  61
  62                 bzero((char *)&hints, sizeof(hints));
  63                 hints.ai_family = PF_INET6;
  64
  65                 getaddrinfo(name, NULL, &hints, &res);
  66                 if (res != NULL) {
  67                         sin6 = (struct sockaddr_in6 *)res->ai_addr;
  68                         hostp->in6 = sin6->sin6_addr;
  69                         freeaddrinfo(res);
  70                         return 0;
  71                 }
  72         }
  73 #endif
  74         return -1;
  75 }