zoneconf.c revision 886b96ebfd555cfeaf37ae46fc08421a41c61392
/*
* 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.
*/
/* $Id: zoneconf.c,v 1.55 2000/08/10 00:53:34 gson Exp $ */
#include <config.h>
#include <isc/mem.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*/
}
}
/*
* Helper function for strtoargv(). Pardon the gratuitous recursion.
*/
static isc_result_t
strtoargvsub(isc_mem_t *mctx, char *s, int *argcp, char ***argvp, int n) {
isc_result_t result;
/* Discard leading whitespace. */
while (*s == ' ' || *s == '\t')
s++;
if (*s == '\0') {
/* We have reached the end of the string. */
*argcp = n;
*argvp = isc_mem_get(mctx, n * sizeof(char *));
if (*argvp == NULL)
return (ISC_R_NOMEMORY);
} else {
char *p = s;
while (*p != ' ' && *p != '\t' && *p != '\0')
p++;
if (*p != '\0')
*p++ = '\0';
result = strtoargvsub(mctx, p, argcp, argvp, n + 1);
if (result != ISC_R_SUCCESS)
return (result);
(*argvp)[n] = s;
}
return (ISC_R_SUCCESS);
}
/*
* Tokenize the string "s" into whitespace-separated words,
* return the number of words in '*argcp' and an array
* of pointers to the words in '*argvp'. The caller
* must free the array using isc_mem_put(). The string
* is modified in-place.
*/
static isc_result_t
strtoargv(isc_mem_t *mctx, char *s, int *argcp, char ***argvp) {
return (strtoargvsub(mctx, s, argcp, argvp, 0));
}
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;
dns_notifytype_t notifytype;
#ifdef notyet
dns_c_severity_t severity;
#endif
dns_c_iplist_t *iplist;
isc_sockaddr_t sockaddr;
isc_uint32_t uintval;
isc_sockaddr_t sockaddr_any4, sockaddr_any6;
dns_ssutable_t *ssutable = NULL;
char *cpval;
unsigned int dbargc;
char **dbargv;
static char default_dbtype[] = "rbt";
isc_mem_t *mctx = dns_zone_getmctx(zone);
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));
cpval = NULL;
result = dns_c_zone_getdatabase(czone, &cpval);
#ifdef notyet
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getdatabase(cview, &cpval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getdatabase(cview, &cpval);
#endif
if (result != ISC_R_SUCCESS)
cpval = default_dbtype;
RETERR(strtoargv(mctx, cpval, &dbargc, &dbargv));
RETERR(dns_zone_setdbtype(zone, dbargc, dbargv));
isc_mem_put(mctx, dbargv, dbargc * sizeof(*dbargv));
result = dns_c_zone_getfile(czone, &filename);
if (result == ISC_R_SUCCESS)
RETERR(dns_zone_setdatabase(zone, filename));
else if (czone->ztype != dns_c_zone_slave &&
czone->ztype != dns_c_zone_stub)
return (result);
#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_ZONEOPT_DIALUP, boolean);
#ifndef NOMINUM_PUBLIC
result = dns_c_zone_getmaxnames(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxnames(cview, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxnames(cctx, &uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_ZONE_MINRETRY;
dns_zone_setmaxnames(zone, uintval);
#endif /* NOMINUM_PUBLIC */
/*
* 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, &notifytype);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getnotify(cview, &notifytype);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getnotify(cctx, &notifytype);
if (result != ISC_R_SUCCESS)
notifytype = dns_notifytype_yes;
dns_zone_setnotifytype(zone, notifytype);
iplist = NULL;
result = dns_c_zone_getalsonotify(czone, &iplist);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getalsonotify(cview, &iplist);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getalsonotify(cctx, &iplist);
if (result == ISC_R_SUCCESS) {
result = dns_zone_setalsonotify(zone, iplist->ips,
iplist->nextidx);
dns_c_iplist_detach(&iplist);
if (result != ISC_R_SUCCESS)
return (result);
} 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, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxtransfertimeout(cview,
&uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransfertimeout(cctx,
&uintval);
if (result != ISC_R_SUCCESS)
uintval = MAX_XFER_TIME;
dns_zone_setmaxxfrout(zone, uintval);
result = dns_c_zone_getmaxtransidleout(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxtransferidleout(cview,
&uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransferidleout(cctx,
&uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_DEFAULT_IDLEOUT;
dns_zone_setidleout(zone, uintval);
}
/*
* 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);
}
result = dns_c_zone_getsigvalidityinterval(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getsigvalidityinterval(cview,
&uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getsigvalidityinterval(cctx,
&uintval);
if (result != ISC_R_SUCCESS)
uintval = 30 * 24 * 3600;
dns_zone_setsigvalidityinterval(zone, uintval);
}
/*
* Configure slave functionality.
*/
switch (czone->ztype) {
case dns_c_zone_slave:
case dns_c_zone_stub:
iplist = NULL;
result = dns_c_zone_getmasterips(czone, &iplist);
if (result == ISC_R_SUCCESS)
#ifndef NOMINUM_PUBLIC
result = dns_zone_setmasterswithkeys(zone,
iplist->ips,
iplist->keys,
iplist->nextidx);
#else /* NOMINUM_PUBLIC */
result = dns_zone_setmasters(zone, iplist->ips,
iplist->nextidx);
#endif /* NOMINUM_PUBLIC */
else
result = dns_zone_setmasters(zone, NULL, 0);
RETERR(result);
result = dns_c_zone_getmaxtranstimein(czone, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransfertimein(cctx,
&uintval);
if (result != ISC_R_SUCCESS)
uintval = MAX_XFER_TIME;
dns_zone_setmaxxfrin(zone, uintval);
result = dns_c_zone_getmaxtransidlein(czone, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxtransferidlein(cctx,
&uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_DEFAULT_IDLEIN;
dns_zone_setidlein(zone, uintval);
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);
result = dns_c_zone_getmaxrefreshtime(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxrefreshtime(cview, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxrefreshtime(cctx, &uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_ZONE_MAXREFRESH;
dns_zone_setmaxrefreshtime(zone, uintval);
result = dns_c_zone_getminrefreshtime(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getminrefreshtime(cview, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getminrefreshtime(cctx, &uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_ZONE_MINREFRESH;
dns_zone_setminrefreshtime(zone, uintval);
result = dns_c_zone_getmaxretrytime(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getmaxretrytime(cview, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getmaxretrytime(cctx, &uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_ZONE_MAXRETRY;
dns_zone_setmaxretrytime(zone, uintval);
result = dns_c_zone_getminretrytime(czone, &uintval);
if (result != ISC_R_SUCCESS && cview != NULL)
result = dns_c_view_getminretrytime(cview, &uintval);
if (result != ISC_R_SUCCESS)
result = dns_c_ctx_getminretrytime(cctx, &uintval);
if (result != ISC_R_SUCCESS)
uintval = DNS_ZONE_MINRETRY;
dns_zone_setminretrytime(zone, uintval);
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);
return (ISC_TRUE);
}
isc_result_t
dns_zonemgr_configure(dns_c_ctx_t *cctx, dns_zonemgr_t *zmgr) {
isc_uint32_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);
}