contrib/bind-9.2.4rc7/bin/named/lwaddr.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000, 2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: lwaddr.c,v 1.3.2.1 2004/03/09 06:09:18 marka Exp $ */
  19
  20 #include <config.h>
  21
  22 #include <string.h>
  23
  24 #include <isc/result.h>
  25 #include <isc/netaddr.h>
  26 #include <isc/sockaddr.h>
  27
  28 #include <lwres/lwres.h>
  29
  30 #include <named/lwaddr.h>
  31
  32 /*
  33  * Convert addresses from lwres to isc format.
  34  */
  35 isc_result_t
  36 lwaddr_netaddr_fromlwresaddr(isc_netaddr_t *na, lwres_addr_t *la) {
  37         if (la->family != LWRES_ADDRTYPE_V4 && la->family != LWRES_ADDRTYPE_V6)
  38                 return (ISC_R_FAMILYNOSUPPORT);
  39
  40         if (la->family == LWRES_ADDRTYPE_V4) {
  41                 struct in_addr ina;
  42                 memcpy(&ina.s_addr, la->address, 4);
  43                 isc_netaddr_fromin(na, &ina);
  44         } else {
  45                 struct in6_addr ina6;
  46                 memcpy(&ina6.s6_addr, la->address, 16);
  47                 isc_netaddr_fromin6(na, &ina6);
  48         }
  49         return (ISC_R_SUCCESS);
  50 }
  51
  52 isc_result_t
  53 lwaddr_sockaddr_fromlwresaddr(isc_sockaddr_t *sa, lwres_addr_t *la,
  54                               in_port_t port)
  55 {
  56         isc_netaddr_t na;
  57         isc_result_t result;
  58
  59         result = lwaddr_netaddr_fromlwresaddr(&na, la);
  60         if (result != ISC_R_SUCCESS)
  61                 return (result);
  62         isc_sockaddr_fromnetaddr(sa, &na, port);
  63         return (ISC_R_SUCCESS);
  64 }
  65
  66 /*
  67  * Convert addresses from isc to lwres format.
  68  */
  69
  70 isc_result_t
  71 lwaddr_lwresaddr_fromnetaddr(lwres_addr_t *la, isc_netaddr_t *na) {
  72         if (na->family != AF_INET && na->family != AF_INET6)
  73                 return (ISC_R_FAMILYNOSUPPORT);
  74
  75         if (na->family == AF_INET) {
  76                 la->family = LWRES_ADDRTYPE_V4;
  77                 la->length = 4;
  78                 memcpy(la->address, &na->type.in, 4);
  79         } else {
  80                 la->family = LWRES_ADDRTYPE_V6;
  81                 la->length = 16;
  82                 memcpy(la->address, &na->type.in, 16);
  83         }
  84         return (ISC_R_SUCCESS);
  85 }
  86
  87 isc_result_t
  88 lwaddr_lwresaddr_fromsockaddr(lwres_addr_t *la, isc_sockaddr_t *sa) {
  89         isc_netaddr_t na;
  90         isc_netaddr_fromsockaddr(&na, sa);
  91         return (lwaddr_lwresaddr_fromnetaddr(la, &na));
  92 }