zoneconf.c revision 5f80c1428b9b7235fc9c1c80aa505457c3043504
/*
* Copyright (C) 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <config.h>
#include <isc/string.h> /* Required for HP/UX (and others?) */
#include <isc/util.h>
#include <dns/acl.h>
#include <dns/zone.h>
#include <dns/zoneconf.h>
#include <dns/ssu.h>
/*
* These are BIND9 server defaults, not necessarily identical to the
* library defaults defined in zone.c.
*/
#define MAX_XFER_TIME (2*3600) /* Documented default is 2 hours. */
#define DNS_DEFAULT_IDLEIN 3600 /* 1 hour */
#define DNS_DEFAULT_IDLEOUT 3600 /* 1 hour */
#define RETERR(x) do { \
isc_result_t _r = (x); \
if (_r != ISC_R_SUCCESS) \
return (_r); \
} while (0)
/*
* Convenience function for configuring a single zone ACL.
*/
static isc_result_t
configure_zone_acl(dns_c_zone_t *czone, dns_c_ctx_t *cctx, dns_c_view_t *cview,
dns_aclconfctx_t *aclconfctx, dns_zone_t *zone,
isc_result_t (*getcacl)(dns_c_zone_t *,
dns_c_ipmatchlist_t **),
isc_result_t (*getviewcacl)(dns_c_view_t *
, dns_c_ipmatchlist_t **),
isc_result_t (*getglobalcacl)(dns_c_ctx_t *,
dns_c_ipmatchlist_t **),
void (*setzacl)(dns_zone_t *, dns_acl_t *),
void (*clearzacl)(dns_zone_t *))
{
isc_result_t result;
dns_c_ipmatchlist_t *cacl;
dns_acl_t *dacl = NULL;
result = (*getcacl)(czone, &cacl);
if (result == ISC_R_NOTFOUND && getviewcacl != NULL && cview != NULL) {
result = (*getviewcacl)(cview, &cacl);
}
if (result == ISC_R_NOTFOUND && getglobalcacl != NULL) {
result = (*getglobalcacl)(cctx, &cacl);
}
if (result == ISC_R_SUCCESS) {
result = dns_acl_fromconfig(cacl, cctx, aclconfctx,
dns_zone_getmctx(zone), &dacl);
dns_c_ipmatchlist_detach(&cacl);
if (result != ISC_R_SUCCESS)
return (result);
(*setzacl)(zone, dacl);
dns_acl_detach(&dacl);
return (ISC_R_SUCCESS);
} else if (result == ISC_R_NOTFOUND) {
(*clearzacl)(zone);
return (ISC_R_SUCCESS);
} else {
return (result);
}
}
/*
* Conver a config file zone type into a server zone type.
*/
static dns_zonetype_t
dns_zonetype_fromconf(dns_c_zonetype_t cztype) {
switch (cztype) {
case dns_c_zone_master:
return dns_zone_master;
case dns_c_zone_slave:
return dns_zone_slave;
case dns_c_zone_stub:
return dns_zone_stub;
default:
/*
* Hint and forward zones are not really zones;
* they should never get this far.
*/
INSIST(0);
return (dns_zone_none); /*NOTREACHED*/
}
}
isc_result_t
dns_zone_configure(dns_c_ctx_t *cctx, dns_c_view_t *cview,
dns_c_zone_t *czone, dns_aclconfctx_t *ac,
dns_zone_t *zone)
{
isc_result_t result;
isc_boolean_t boolean;
const char *filename = NULL;
#ifdef notyet
dns_c_severity_t severity;
#endif
dns_c_iplist_t *iplist = NULL;
isc_sockaddr_t sockaddr;
isc_int32_t maxxfr;
isc_sockaddr_t sockaddr_any4, sockaddr_any6;
dns_ssutable_t *ssutable = NULL;
isc_sockaddr_any(&sockaddr_any4);
isc_sockaddr_any6(&sockaddr_any6);
/*
* Configure values common to all zone types.
*/
dns_zone_setclass(zone, czone->zclass);
dns_zone_settype(zone, dns_zonetype_fromconf(czone->ztype));
/* XXX needs to be an zone option */
RETERR(dns_zone_setdbtype(zone, "rbt"));
RETERR(dns_c_zone_getfile(czone, &filename));
RETERR(dns_zone_setdatabase(zone, filename));
#ifdef notyet
result = dns_c_zone_getchecknames(czone, &severity);
if (result == ISC_R_SUCCESS)
dns_zone_setchecknames(zone, severity);
else
dns_zone_setchecknames(zone, dns_c_severity_warn);
#endif
/*
* XXXAG This probably does not make sense for stubs.
*/
RETERR(configure_zone_acl(czone, cctx, cview, ac, zone,
dns_c_zone_getallowquery,
dns_c_view_getallowquery,
dns_c_ctx_getallowquery,
dns_zone_setqueryacl,
dns_zone_clearqueryacl));
result = dns_c_zone_getdialup(czone, &boolean);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getdialup(cctx, &boolean);
if (result != ISC_R_SUCCESS)
boolean = ISC_FALSE;
dns_zone_setoption(zone, DNS_ZONE_O_DIALUP, boolean);
/*
* Configure master functionality. This applies
* to primary masters (type "master") and slaves
* acting as masters (type "slave"), but not to stubs.
*/
if (czone->ztype != dns_c_zone_stub) {
result = dns_c_zone_getnotify(czone, &boolean);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getnotify(cview, &boolean);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getnotify(cctx, &boolean);
if (result != ISC_R_SUCCESS)
boolean = ISC_TRUE;
dns_zone_setoption(zone, DNS_ZONE_O_NOTIFY, boolean);
result = dns_c_zone_getalsonotify(czone, &iplist);
if (result == ISC_R_SUCCESS)
RETERR(dns_zone_setalsonotify(zone, iplist->ips,
iplist->nextidx));
else
RETERR(dns_zone_setalsonotify(zone, NULL, 0));
RETERR(configure_zone_acl(czone, cctx, cview, ac, zone,
dns_c_zone_getallowtransfer,
dns_c_view_gettransferacl,
dns_c_ctx_getallowtransfer,
dns_zone_setxfracl,
dns_zone_clearxfracl));
result = dns_c_zone_getmaxtranstimeout(czone, &maxxfr);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxtransfertimeout(cview,
&maxxfr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransfertimeout(cctx,
&maxxfr);
if (result != ISC_R_SUCCESS)
maxxfr = MAX_XFER_TIME;
dns_zone_setmaxxfrout(zone, maxxfr);
result = dns_c_zone_getmaxtransidleout(czone, &maxxfr);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxtransferidleout(cview,
&maxxfr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransferidleout(cctx,
&maxxfr);
if (result != ISC_R_SUCCESS)
maxxfr = DNS_DEFAULT_IDLEOUT;
dns_zone_setidleout(zone, maxxfr);
}
/*
* Configure update-related options. These apply to
* primary masters only.
*/
if (czone->ztype == dns_c_zone_master) {
RETERR(configure_zone_acl(czone, cctx, NULL, ac, zone,
dns_c_zone_getallowupd,
NULL, NULL,
dns_zone_setupdateacl,
dns_zone_clearupdateacl));
dns_zone_getssutable(zone, &ssutable);
if (ssutable != NULL)
dns_ssutable_detach(&ssutable);
result = dns_c_zone_getssuauth(czone, &ssutable);
if (result == ISC_R_SUCCESS) {
dns_ssutable_t *newssutable = NULL;
dns_ssutable_attach(ssutable, &newssutable);
dns_zone_setssutable(zone, newssutable);
}
}
/*
* Configure slave functionality.
*/
switch (czone->ztype) {
case dns_c_zone_slave:
case dns_c_zone_stub:
result = dns_c_zone_getmasterips(czone, &iplist);
if (result == ISC_R_SUCCESS)
result = dns_zone_setmasters(zone, iplist->ips,
iplist->nextidx);
else
result = dns_zone_setmasters(zone, NULL, 0);
RETERR(result);
result = dns_c_zone_getmaxtranstimein(czone, &maxxfr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransfertimein(cctx, &maxxfr);
if (result != ISC_R_SUCCESS)
maxxfr = MAX_XFER_TIME;
dns_zone_setmaxxfrin(zone, maxxfr);
result = dns_c_zone_getmaxtransidlein(czone, &maxxfr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransferidlein(cctx, &maxxfr);
if (result != ISC_R_SUCCESS)
maxxfr = DNS_DEFAULT_IDLEIN;
dns_zone_setidlein(zone, maxxfr);
result = dns_c_zone_gettransfersource(czone, &sockaddr);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_gettransfersource(cview,
&sockaddr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_gettransfersource(cctx, &sockaddr);
if (result != ISC_R_SUCCESS)
sockaddr = sockaddr_any4;
dns_zone_setxfrsource4(zone, &sockaddr);
result = dns_c_zone_gettransfersourcev6(czone, &sockaddr);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_gettransfersourcev6(cview,
&sockaddr);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_gettransfersourcev6(cctx,
&sockaddr);
if (result != ISC_R_SUCCESS)
sockaddr = sockaddr_any6;
dns_zone_setxfrsource6(zone, &sockaddr);
break;
default:
break;
}
return (ISC_R_SUCCESS);
}
isc_boolean_t
dns_zone_reusable(dns_zone_t *zone, dns_c_zone_t *czone) {
const char *cfilename;
const char *zfilename;
if (dns_zonetype_fromconf(czone->ztype) != dns_zone_gettype(zone))
return (ISC_FALSE);
cfilename = NULL;
(void) dns_c_zone_getfile(czone, &cfilename);
zfilename = dns_zone_getdatabase(zone);
if (cfilename == NULL || zfilename == NULL ||
strcmp(cfilename, zfilename) != 0)
return (ISC_FALSE);
/* XXX Compare masters, too. */
return (ISC_TRUE);
}
isc_result_t
dns_zonemgr_configure(dns_c_ctx_t *cctx, dns_zonemgr_t *zmgr) {
isc_int32_t val;
isc_result_t result;
result = dns_c_ctx_gettransfersin(cctx, &val);
if (result != ISC_R_SUCCESS)
val = 10;
dns_zonemgr_settransfersin(zmgr, val);
result = dns_c_ctx_gettransfersperns(cctx, &val);
if (result != ISC_R_SUCCESS)
val = 2;
dns_zonemgr_settransfersperns(zmgr, val);
return (ISC_R_SUCCESS);
}