external/bsd/bind/dist/bin/named/lwaddr.c

   1 /*      $NetBSD: lwaddr.c,v 1.5 2014/12/10 04:37:51 christos Exp $      */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2008, 2014  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2000, 2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: lwaddr.c,v 1.10 2008/01/11 23:46:56 tbox Exp  */
  21
  22 /*! \file */
  23
  24 #include <config.h>
  25
  26 #include <string.h>
  27
  28 #include <isc/result.h>
  29 #include <isc/netaddr.h>
  30 #include <isc/sockaddr.h>
  31
  32 #include <lwres/lwres.h>
  33
  34 #include <named/lwaddr.h>
  35
  36 /*%
  37  * Convert addresses from lwres to isc format.
  38  */
  39 isc_result_t
  40 lwaddr_netaddr_fromlwresaddr(isc_netaddr_t *na, lwres_addr_t *la) {
  41         if (la->family != LWRES_ADDRTYPE_V4 && la->family != LWRES_ADDRTYPE_V6)
  42                 return (ISC_R_FAMILYNOSUPPORT);
  43
  44         if (la->family == LWRES_ADDRTYPE_V4) {
  45                 struct in_addr ina;
  46                 memmove(&ina.s_addr, la->address, 4);
  47                 isc_netaddr_fromin(na, &ina);
  48         } else {
  49                 struct in6_addr ina6;
  50                 memmove(&ina6.s6_addr, la->address, 16);
  51                 isc_netaddr_fromin6(na, &ina6);
  52         }
  53         return (ISC_R_SUCCESS);
  54 }
  55
  56 isc_result_t
  57 lwaddr_sockaddr_fromlwresaddr(isc_sockaddr_t *sa, lwres_addr_t *la,
  58                               in_port_t port)
  59 {
  60         isc_netaddr_t na;
  61         isc_result_t result;
  62
  63         result = lwaddr_netaddr_fromlwresaddr(&na, la);
  64         if (result != ISC_R_SUCCESS)
  65                 return (result);
  66         isc_sockaddr_fromnetaddr(sa, &na, port);
  67         return (ISC_R_SUCCESS);
  68 }
  69
  70 /*%
  71  * Convert addresses from isc to lwres format.
  72  */
  73
  74 isc_result_t
  75 lwaddr_lwresaddr_fromnetaddr(lwres_addr_t *la, isc_netaddr_t *na) {
  76         if (na->family != AF_INET && na->family != AF_INET6)
  77                 return (ISC_R_FAMILYNOSUPPORT);
  78
  79         if (na->family == AF_INET) {
  80                 la->family = LWRES_ADDRTYPE_V4;
  81                 la->length = 4;
  82                 memmove(la->address, &na->type.in, 4);
  83         } else {
  84                 la->family = LWRES_ADDRTYPE_V6;
  85                 la->length = 16;
  86                 memmove(la->address, &na->type.in6, 16);
  87         }
  88         return (ISC_R_SUCCESS);
  89 }
  90
  91 isc_result_t
  92 lwaddr_lwresaddr_fromsockaddr(lwres_addr_t *la, isc_sockaddr_t *sa) {
  93         isc_netaddr_t na;
  94         isc_netaddr_fromsockaddr(&na, sa);
  95         return (lwaddr_lwresaddr_fromnetaddr(la, &na));
  96 }