File: //usr/local/ssl/include/dns/zone.h
/*
* Copyright (C) 2004, 2006 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2003 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 ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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: zone.h,v 1.106.2.7.4.18 2006/08/01 03:44:00 marka Exp $ */
#ifndef DNS_ZONE_H
#define DNS_ZONE_H 1
/***
*** Imports
***/
#include <stdio.h>
#include <isc/formatcheck.h>
#include <isc/lang.h>
#include <isc/rwlock.h>
#include <dns/types.h>
typedef enum {
dns_zone_none,
dns_zone_master,
dns_zone_slave,
dns_zone_stub
} dns_zonetype_t;
#define DNS_ZONEOPT_SERVERS 0x00000001U /* perform server checks */
#define DNS_ZONEOPT_PARENTS 0x00000002U /* perform parent checks */
#define DNS_ZONEOPT_CHILDREN 0x00000004U /* perform child checks */
#define DNS_ZONEOPT_NOTIFY 0x00000008U /* perform NOTIFY */
#define DNS_ZONEOPT_MANYERRORS 0x00000010U /* return many errors on load */
#define DNS_ZONEOPT_IXFRFROMDIFFS 0x00000020U /* calculate differences */
#define DNS_ZONEOPT_NOMERGE 0x00000040U /* don't merge journal */
#define DNS_ZONEOPT_CHECKNS 0x00000080U /* check if NS's are addresses */
#define DNS_ZONEOPT_FATALNS 0x00000100U /* DNS_ZONEOPT_CHECKNS is fatal */
#define DNS_ZONEOPT_MULTIMASTER 0x00000200U /* this zone has multiple masters */
#define DNS_ZONEOPT_USEALTXFRSRC 0x00000400U /* use alternate transfer sources */
#define DNS_ZONEOPT_CHECKNAMES 0x00000800U /* check-names */
#define DNS_ZONEOPT_CHECKNAMESFAIL 0x00001000U /* fatal check-name failures */
#ifndef NOMINUM_PUBLIC
/*
* Nominum specific options build down.
*/
#define DNS_ZONEOPT_NOTIFYFORWARD 0x80000000U /* forward notify to master */
#endif /* NOMINUM_PUBLIC */
#ifndef DNS_ZONE_MINREFRESH
#define DNS_ZONE_MINREFRESH 300 /* 5 minutes */
#endif
#ifndef DNS_ZONE_MAXREFRESH
#define DNS_ZONE_MAXREFRESH 2419200 /* 4 weeks */
#endif
#ifndef DNS_ZONE_DEFAULTREFRESH
#define DNS_ZONE_DEFAULTREFRESH 3600 /* 1 hour */
#endif
#ifndef DNS_ZONE_MINRETRY
#define DNS_ZONE_MINRETRY 300 /* 5 minutes */
#endif
#ifndef DNS_ZONE_MAXRETRY
#define DNS_ZONE_MAXRETRY 1209600 /* 2 weeks */
#endif
#ifndef DNS_ZONE_DEFAULTRETRY
#define DNS_ZONE_DEFAULTRETRY 60 /* 1 minute, subject to
exponential backoff */
#endif
#define DNS_ZONESTATE_XFERRUNNING 1
#define DNS_ZONESTATE_XFERDEFERRED 2
#define DNS_ZONESTATE_SOAQUERY 3
#define DNS_ZONESTATE_ANY 4
ISC_LANG_BEGINDECLS
/***
*** Functions
***/
isc_result_t
dns_zone_create(dns_zone_t **zonep, isc_mem_t *mctx);
/*
* Creates a new empty zone and attach '*zonep' to it.
*
* Requires:
* 'zonep' to point to a NULL pointer.
* 'mctx' to be a valid memory context.
*
* Ensures:
* '*zonep' refers to a valid zone.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* ISC_R_UNEXPECTED
*/
void
dns_zone_setclass(dns_zone_t *zone, dns_rdataclass_t rdclass);
/*
* Sets the class of a zone. This operation can only be performed
* once on a zone.
*
* Require:
* 'zone' to be a valid zone.
* dns_zone_setclass() not to have been called since the zone was
* created.
* 'rdclass' != dns_rdataclass_none.
*/
dns_rdataclass_t
dns_zone_getclass(dns_zone_t *zone);
/*
* Returns the current zone class.
*
* Requires:
* 'zone' to be a valid zone.
*/
void
dns_zone_settype(dns_zone_t *zone, dns_zonetype_t type);
/*
* Sets the zone type. This operation can only be performed once on
* a zone.
*
* Requires:
* 'zone' to be a valid zone.
* dns_zone_settype() not to have been called since the zone was
* created.
* 'type' != dns_zone_none
*/
void
dns_zone_setview(dns_zone_t *zone, dns_view_t *view);
/*
* Associate the zone with a view.
*
* Require:
* 'zone' to be a valid zone.
*/
dns_view_t *
dns_zone_getview(dns_zone_t *zone);
/*
* Returns the zone's associated view.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setorigin(dns_zone_t *zone, const dns_name_t *origin);
/*
* Sets the zones origin to 'origin'.
*
* Require:
* 'zone' to be a valid zone.
* 'origin' to be non NULL.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
*/
dns_name_t *
dns_zone_getorigin(dns_zone_t *zone);
/*
* Returns the value of the origin.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setfile(dns_zone_t *zone, const char *file);
/*
* Sets the name of the master file from which the zone
* loads its database to 'file'. For zones that have
* no associated master file, 'file' will be NULL.
*
* For zones with persistent databases, the file name
* setting is ignored.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* ISC_R_NOMEMORY
* ISC_R_SUCCESS
*/
const char *
dns_zone_getfile(dns_zone_t *zone);
/*
* Gets the name of the zone's master file, if any.
*
* Requires:
* 'zone' to be valid initialised zone.
*
* Returns:
* Pointer to null-terminated file name, or NULL.
*/
isc_result_t
dns_zone_load(dns_zone_t *zone);
isc_result_t
dns_zone_loadnew(dns_zone_t *zone);
/*
* Cause the database to be loaded from its backing store.
* Confirm that the minimum requirements for the zone type are
* met, otherwise DNS_R_BADZONE is returned.
*
* dns_zone_loadnew() only loads zones that are not yet loaded.
* dns_zone_load() also loads zones that are already loaded and
* and whose master file has changed since the last load.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* ISC_R_UNEXPECTED
* ISC_R_SUCCESS
* DNS_R_CONTINUE Incremental load has been queued.
* DNS_R_UPTODATE The zone has already been loaded based on
* file system timestamps.
* DNS_R_BADZONE
* Any result value from dns_db_load().
*/
void
dns_zone_attach(dns_zone_t *source, dns_zone_t **target);
/*
* Attach '*target' to 'source' incrementing its external
* reference count.
*
* Require:
* 'zone' to be a valid zone.
* 'target' to be non NULL and '*target' to be NULL.
*/
void
dns_zone_detach(dns_zone_t **zonep);
/*
* Detach from a zone decrementing its external reference count.
* If this was the last external reference to the zone it will be
* shut down and eventually freed.
*
* Require:
* 'zonep' to point to a valid zone.
*/
void
dns_zone_iattach(dns_zone_t *source, dns_zone_t **target);
/*
* Attach '*target' to 'source' incrementing its internal
* reference count. This is intended for use by operations
* such as zone transfers that need to prevent the zone
* object from being freed but not from shutting down.
*
* Require:
* The caller is running in the context of the zone's task.
* 'zone' to be a valid zone.
* 'target' to be non NULL and '*target' to be NULL.
*/
void
dns_zone_idetach(dns_zone_t **zonep);
/*
* Detach from a zone decrementing its internal reference count.
* If there are no more internal or external references to the
* zone, it will be freed.
*
* Require:
* The caller is running in the context of the zone's task.
* 'zonep' to point to a valid zone.
*/
void
dns_zone_setflag(dns_zone_t *zone, unsigned int flags, isc_boolean_t value);
/*
* Sets ('value' == 'ISC_TRUE') / clears ('value' == 'IS_FALSE')
* zone flags. Valid flag bits are DNS_ZONE_F_*.
*
* Requires
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_getdb(dns_zone_t *zone, dns_db_t **dbp);
/*
* Attach '*dbp' to the database to if it exists otherwise
* return DNS_R_NOTLOADED.
*
* Require:
* 'zone' to be a valid zone.
* 'dbp' to be != NULL && '*dbp' == NULL.
*
* Returns:
* ISC_R_SUCCESS
* DNS_R_NOTLOADED
*/
isc_result_t
dns_zone_setdbtype(dns_zone_t *zone,
unsigned int dbargc, const char * const *dbargv);
/*
* Sets the database type to dbargv[0] and database arguments
* to subsequent dbargv elements.
* 'db_type' is not checked to see if it is a valid database type.
*
* Require:
* 'zone' to be a valid zone.
* 'database' to be non NULL.
* 'dbargc' to be >= 1
* 'dbargv' to point to dbargc NULL-terminated strings
*
* Returns:
* ISC_R_NOMEMORY
* ISC_R_SUCCESS
*/
void
dns_zone_markdirty(dns_zone_t *zone);
/*
* Mark a zone as 'dirty'.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_expire(dns_zone_t *zone);
/*
* Mark the zone as expired. If the zone requires dumping cause it to
* be initiated. Set the refresh and retry intervals to there default
* values and unload the zone.
*
* Require
* 'zone' to be a valid zone.
*/
void
dns_zone_refresh(dns_zone_t *zone);
/*
* Initiate zone up to date checks. The zone must already be being
* managed.
*
* Require
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_flush(dns_zone_t *zone);
/*
* Write the zone to database if there are uncommited changes.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_dump(dns_zone_t *zone);
/*
* Write the zone to database.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_dumptostream(dns_zone_t *zone, FILE *fd);
/*
* Write the zone to stream 'fd'.
*
* Require:
* 'zone' to be a valid zone.
* 'fd' to be a stream open for writing.
*/
isc_result_t
dns_zone_fulldumptostream(dns_zone_t *zone, FILE *fd);
/*
* The same as dns_zone_dumptostream, but dumps the zone with
* different dump settings (dns_master_style_full).
*
* Require:
* 'zone' to be a valid zone.
* 'fd' to be a stream open for writing.
*/
void
dns_zone_maintenance(dns_zone_t *zone);
/*
* Perform regular maintenace on the zone. This is called as a
* result of a zone being managed.
*
* Require
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setmasters(dns_zone_t *zone, const isc_sockaddr_t *masters,
isc_uint32_t count);
isc_result_t
dns_zone_setmasterswithkeys(dns_zone_t *zone,
const isc_sockaddr_t *masters,
dns_name_t **keynames,
isc_uint32_t count);
/*
* Set the list of master servers for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'masters' array of isc_sockaddr_t with port set or NULL.
* 'count' the number of masters.
* 'keynames' array of dns_name_t's for tsig keys or NULL.
*
* dns_zone_setmasters() is just a wrapper to setmasterswithkeys(),
* passing NULL in the keynames field.
*
* If 'masters' is NULL then 'count' must be zero.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
* Any result dns_name_dup() can return, if keynames!=NULL
*/
isc_result_t
dns_zone_setalsonotify(dns_zone_t *zone, const isc_sockaddr_t *notify,
isc_uint32_t count);
/*
* Set the list of additional servers to be notified when
* a zone changes. To clear the list use 'count = 0'.
*
* Require:
* 'zone' to be a valid zone.
* 'notify' to be non-NULL if count != 0.
* 'count' to be the number of notifyees.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
*/
void
dns_zone_unload(dns_zone_t *zone);
/*
* detach the database from the zone structure.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_setoption(dns_zone_t *zone, unsigned int option, isc_boolean_t value);
/*
* Set given options on ('value' == ISC_TRUE) or off ('value' ==
* ISC_FALSE).
*
* Require:
* 'zone' to be a valid zone.
*/
unsigned int
dns_zone_getoptions(dns_zone_t *zone);
/*
* Returns the current zone options.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_setminrefreshtime(dns_zone_t *zone, isc_uint32_t val);
/*
* Set the minimum refresh time.
*
* Requires:
* 'zone' is valid.
* val > 0.
*/
void
dns_zone_setmaxrefreshtime(dns_zone_t *zone, isc_uint32_t val);
/*
* Set the maximum refresh time.
*
* Requires:
* 'zone' is valid.
* val > 0.
*/
void
dns_zone_setminretrytime(dns_zone_t *zone, isc_uint32_t val);
/*
* Set the minimum retry time.
*
* Requires:
* 'zone' is valid.
* val > 0.
*/
void
dns_zone_setmaxretrytime(dns_zone_t *zone, isc_uint32_t val);
/*
* Set the maximum retry time.
*
* Requires:
* 'zone' is valid.
* val > 0.
*/
isc_result_t
dns_zone_setxfrsource4(dns_zone_t *zone, const isc_sockaddr_t *xfrsource);
isc_result_t
dns_zone_setaltxfrsource4(dns_zone_t *zone,
const isc_sockaddr_t *xfrsource);
/*
* Set the source address to be used in IPv4 zone transfers.
*
* Require:
* 'zone' to be a valid zone.
* 'xfrsource' to contain the address.
*
* Returns:
* ISC_R_SUCCESS
*/
isc_sockaddr_t *
dns_zone_getxfrsource4(dns_zone_t *zone);
isc_sockaddr_t *
dns_zone_getaltxfrsource4(dns_zone_t *zone);
/*
* Returns the source address set by a previous dns_zone_setxfrsource4
* call, or the default of inaddr_any, port 0.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setxfrsource6(dns_zone_t *zone, const isc_sockaddr_t *xfrsource);
isc_result_t
dns_zone_setaltxfrsource6(dns_zone_t *zone,
const isc_sockaddr_t *xfrsource);
/*
* Set the source address to be used in IPv6 zone transfers.
*
* Require:
* 'zone' to be a valid zone.
* 'xfrsource' to contain the address.
*
* Returns:
* ISC_R_SUCCESS
*/
isc_sockaddr_t *
dns_zone_getxfrsource6(dns_zone_t *zone);
isc_sockaddr_t *
dns_zone_getaltxfrsource6(dns_zone_t *zone);
/*
* Returns the source address set by a previous dns_zone_setxfrsource6
* call, or the default of in6addr_any, port 0.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setnotifysrc4(dns_zone_t *zone, const isc_sockaddr_t *notifysrc);
/*
* Set the source address to be used with IPv4 NOTIFY messages.
*
* Require:
* 'zone' to be a valid zone.
* 'notifysrc' to contain the address.
*
* Returns:
* ISC_R_SUCCESS
*/
isc_sockaddr_t *
dns_zone_getnotifysrc4(dns_zone_t *zone);
/*
* Returns the source address set by a previous dns_zone_setnotifysrc4
* call, or the default of inaddr_any, port 0.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setnotifysrc6(dns_zone_t *zone, const isc_sockaddr_t *notifysrc);
/*
* Set the source address to be used with IPv6 NOTIFY messages.
*
* Require:
* 'zone' to be a valid zone.
* 'notifysrc' to contain the address.
*
* Returns:
* ISC_R_SUCCESS
*/
isc_sockaddr_t *
dns_zone_getnotifysrc6(dns_zone_t *zone);
/*
* Returns the source address set by a previous dns_zone_setnotifysrc6
* call, or the default of in6addr_any, port 0.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_setnotifyacl(dns_zone_t *zone, dns_acl_t *acl);
/*
* Sets the notify acl list for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'acl' to be a valid acl.
*/
void
dns_zone_setqueryacl(dns_zone_t *zone, dns_acl_t *acl);
/*
* Sets the query acl list for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'acl' to be a valid acl.
*/
void
dns_zone_setupdateacl(dns_zone_t *zone, dns_acl_t *acl);
/*
* Sets the update acl list for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'acl' to be valid acl.
*/
void
dns_zone_setforwardacl(dns_zone_t *zone, dns_acl_t *acl);
/*
* Sets the forward unsigned updates acl list for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'acl' to be valid acl.
*/
void
dns_zone_setxfracl(dns_zone_t *zone, dns_acl_t *acl);
/*
* Sets the transfer acl list for the zone.
*
* Require:
* 'zone' to be a valid zone.
* 'acl' to be valid acl.
*/
dns_acl_t *
dns_zone_getnotifyacl(dns_zone_t *zone);
/*
* Returns the current notify acl or NULL.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* acl a pointer to the acl.
* NULL
*/
dns_acl_t *
dns_zone_getqueryacl(dns_zone_t *zone);
/*
* Returns the current query acl or NULL.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* acl a pointer to the acl.
* NULL
*/
dns_acl_t *
dns_zone_getupdateacl(dns_zone_t *zone);
/*
* Returns the current update acl or NULL.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* acl a pointer to the acl.
* NULL
*/
dns_acl_t *
dns_zone_getforwardacl(dns_zone_t *zone);
/*
* Returns the current forward unsigned updates acl or NULL.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* acl a pointer to the acl.
* NULL
*/
dns_acl_t *
dns_zone_getxfracl(dns_zone_t *zone);
/*
* Returns the current transfer acl or NULL.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* acl a pointer to the acl.
* NULL
*/
void
dns_zone_clearupdateacl(dns_zone_t *zone);
/*
* Clear the current update acl.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_clearforwardacl(dns_zone_t *zone);
/*
* Clear the current forward unsigned updates acl.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_clearnotifyacl(dns_zone_t *zone);
/*
* Clear the current notify acl.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_clearqueryacl(dns_zone_t *zone);
/*
* Clear the current query acl.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_clearxfracl(dns_zone_t *zone);
/*
* Clear the current transfer acl.
*
* Require:
* 'zone' to be a valid zone.
*/
isc_boolean_t
dns_zone_getupdatedisabled(dns_zone_t *zone);
void
dns_zone_setupdatedisabled(dns_zone_t *zone, isc_boolean_t state);
void
dns_zone_setchecknames(dns_zone_t *zone, dns_severity_t severity);
/*
* Set the severity of name checking when loading a zone.
*
* Require:
* 'zone' to be a valid zone.
*/
dns_severity_t
dns_zone_getchecknames(dns_zone_t *zone);
/*
* Return the current severity of name checking.
*
* Require:
* 'zone' to be a valid zone.
*/
void
dns_zone_setjournalsize(dns_zone_t *zone, isc_int32_t size);
/*
* Sets the journal size for the zone.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_int32_t
dns_zone_getjournalsize(dns_zone_t *zone);
/*
* Return the journal size as set with a previous call to
* dns_zone_setjournalsize().
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_notifyreceive(dns_zone_t *zone, isc_sockaddr_t *from,
dns_message_t *msg);
/*
* Tell the zone that it has recieved a NOTIFY message from another
* server. This may cause some zone maintainence activity to occur.
*
* Requires:
* 'zone' to be a valid zone.
* '*from' to contain the address of the server from which 'msg'
* was recieved.
* 'msg' a message with opcode NOTIFY and qr clear.
*
* Returns:
* DNS_R_REFUSED
* DNS_R_NOTIMP
* DNS_R_FORMERR
* DNS_R_SUCCESS
*/
void
dns_zone_setmaxxfrin(dns_zone_t *zone, isc_uint32_t maxxfrin);
/*
* Set the maximum time (in seconds) that a zone transfer in (AXFR/IXFR)
* of this zone will use before being aborted.
*
* Requires:
* 'zone' to be valid initialised zone.
*/
isc_uint32_t
dns_zone_getmaxxfrin(dns_zone_t *zone);
/*
* Returns the maximum transfer time for this zone. This will be
* either the value set by the last call to dns_zone_setmaxxfrin() or
* the default value of 1 hour.
*
* Requires:
* 'zone' to be valid initialised zone.
*/
void
dns_zone_setmaxxfrout(dns_zone_t *zone, isc_uint32_t maxxfrout);
/*
* Set the maximum time (in seconds) that a zone transfer out (AXFR/IXFR)
* of this zone will use before being aborted.
*
* Requires:
* 'zone' to be valid initialised zone.
*/
isc_uint32_t
dns_zone_getmaxxfrout(dns_zone_t *zone);
/*
* Returns the maximum transfer time for this zone. This will be
* either the value set by the last call to dns_zone_setmaxxfrout() or
* the default value of 1 hour.
*
* Requires:
* 'zone' to be valid initialised zone.
*/
isc_result_t
dns_zone_setjournal(dns_zone_t *zone, const char *journal);
/*
* Sets the filename used for journaling updates / IXFR transfers.
* The default journal name is set by dns_zone_setfile() to be
* "file.jnl". If 'journal' is NULL, the zone will have no
* journal name.
*
* Requires:
* 'zone' to be a valid zone.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_NOMEMORY
*/
char *
dns_zone_getjournal(dns_zone_t *zone);
/*
* Returns the journal name associated with this zone.
* If no journal has been set this will be NULL.
*
* Requires:
* 'zone' to be valid initialised zone.
*/
dns_zonetype_t
dns_zone_gettype(dns_zone_t *zone);
/*
* Returns the type of the zone (master/slave/etc.)
*
* Requires:
* 'zone' to be valid initialised zone.
*/
void
dns_zone_settask(dns_zone_t *zone, isc_task_t *task);
/*
* Give a zone a task to work with. Any current task will be detached.
*
* Requires:
* 'zone' to be valid.
* 'task' to be valid.
*/
void
dns_zone_gettask(dns_zone_t *zone, isc_task_t **target);
/*
* Attach '*target' to the zone's task.
*
* Requires:
* 'zone' to be valid initialised zone.
* 'zone' to have a task.
* 'target' to be != NULL && '*target' == NULL.
*/
void
dns_zone_notify(dns_zone_t *zone);
/*
* Generate notify events for this zone.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_replacedb(dns_zone_t *zone, dns_db_t *db, isc_boolean_t dump);
/*
* Replace the database of "zone" with a new database "db".
*
* If "dump" is ISC_TRUE, then the new zone contents are dumped
* into to the zone's master file for persistence. When replacing
* a zone database by one just loaded from a master file, set
* "dump" to ISC_FALSE to avoid a redunant redump of the data just
* loaded. Otherwise, it should be set to ISC_TRUE.
*
* If the "diff-on-reload" option is enabled in the configuration file,
* the differences between the old and the new database are added to the
* journal file, and the master file dump is postponed.
*
* Requires:
* 'zone' to be a valid zone.
*
* Returns:
* DNS_R_SUCCESS
* DNS_R_BADZONE zone failed basic consistancy checks:
* * a single SOA must exist
* * some NS records must exist.
* Others
*/
isc_uint32_t
dns_zone_getidlein(dns_zone_t *zone);
/*
* Requires:
* 'zone' to be a valid zone.
*
* Returns:
* number of seconds of idle time before we abort the transfer in.
*/
void
dns_zone_setidlein(dns_zone_t *zone, isc_uint32_t idlein);
/*
* Set the idle timeout for transfer the.
* Zero set the default value, 1 hour.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_uint32_t
dns_zone_getidleout(dns_zone_t *zone);
/*
*
* Requires:
* 'zone' to be a valid zone.
*
* Returns:
* number of seconds of idle time before we abort a transfer out.
*/
void
dns_zone_setidleout(dns_zone_t *zone, isc_uint32_t idleout);
/*
* Set the idle timeout for transfers out.
* Zero set the default value, 1 hour.
*
* Requires:
* 'zone' to be a valid zone.
*/
void
dns_zone_getssutable(dns_zone_t *zone, dns_ssutable_t **table);
/*
* Get the simple-secure-update policy table.
*
* Requires:
* 'zone' to be a valid zone.
*/
void
dns_zone_setssutable(dns_zone_t *zone, dns_ssutable_t *table);
/*
* Set / clear the simple-secure-update policy table.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_mem_t *
dns_zone_getmctx(dns_zone_t *zone);
/*
* Get the memory context of a zone.
*
* Requires:
* 'zone' to be a valid zone.
*/
dns_zonemgr_t *
dns_zone_getmgr(dns_zone_t *zone);
/*
* If 'zone' is managed return the zone manager otherwise NULL.
*
* Requires:
* 'zone' to be a valid zone.
*/
void
dns_zone_setsigvalidityinterval(dns_zone_t *zone, isc_uint32_t interval);
/*
* Set the zone's SIG validity interval. This is the length of time
* for which DNSSEC signatures created as a result of dynamic updates
* to secure zones will remain valid, in seconds.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_uint32_t
dns_zone_getsigvalidityinterval(dns_zone_t *zone);
/*
* Get the zone's SIG validity interval.
*
* Requires:
* 'zone' to be a valid zone.
*/
void
dns_zone_setnotifytype(dns_zone_t *zone, dns_notifytype_t notifytype);
/*
* Sets zone notify method to "notifytype"
*/
isc_result_t
dns_zone_forwardupdate(dns_zone_t *zone, dns_message_t *msg,
dns_updatecallback_t callback, void *callback_arg);
/*
* Forward 'msg' to each master in turn until we get an answer or we
* have exausted the list of masters. 'callback' will be called with
* ISC_R_SUCCESS if we get an answer and the returned message will be
* passed as 'answer_message', otherwise a non ISC_R_SUCCESS result code
* will be passed and answer_message will be NULL. The callback function
* is responsible for destroying 'answer_message'.
* (callback)(callback_arg, result, answer_message);
*
* Require:
* 'zone' to be valid
* 'msg' to be valid.
* 'callback' to be non NULL.
* Returns:
* ISC_R_SUCCESS if the message has been forwarded,
* ISC_R_NOMEMORY
* Others
*/
isc_result_t
dns_zone_next(dns_zone_t *zone, dns_zone_t **next);
/*
* Find the next zone in the list of managed zones.
*
* Requires:
* 'zone' to be valid
* The zone manager for the indicated zone MUST be locked
* by the caller. This is not checked.
* 'next' be non-NULL, and '*next' be NULL.
*
* Ensures:
* 'next' points to a valid zone (result ISC_R_SUCCESS) or to NULL
* (result ISC_R_NOMORE).
*/
isc_result_t
dns_zone_first(dns_zonemgr_t *zmgr, dns_zone_t **first);
/*
* Find the first zone in the list of managed zones.
*
* Requires:
* 'zonemgr' to be valid
* The zone manager for the indicated zone MUST be locked
* by the caller. This is not checked.
* 'first' be non-NULL, and '*first' be NULL
*
* Ensures:
* 'first' points to a valid zone (result ISC_R_SUCCESS) or to NULL
* (result ISC_R_NOMORE).
*/
isc_result_t
dns_zone_setkeydirectory(dns_zone_t *zone, const char *directory);
/*
* Sets the name of the directory where private keys used for
* online signing of dynamic zones are found.
*
* Require:
* 'zone' to be a valid zone.
*
* Returns:
* ISC_R_NOMEMORY
* ISC_R_SUCCESS
*/
const char *
dns_zone_getkeydirectory(dns_zone_t *zone);
/*
* Gets the name of the directory where private keys used for
* online signing of dynamic zones are found.
*
* Requires:
* 'zone' to be valid initialised zone.
*
* Returns:
* Pointer to null-terminated file name, or NULL.
*/
isc_result_t
dns_zonemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr,
isc_timermgr_t *timermgr, isc_socketmgr_t *socketmgr,
dns_zonemgr_t **zmgrp);
/*
* Create a zone manager.
*
* Requires:
* 'mctx' to be a valid memory context.
* 'taskmgr' to be a valid task manager.
* 'timermgr' to be a valid timer manager.
* 'zmgrp' to point to a NULL pointer.
*/
isc_result_t
dns_zonemgr_managezone(dns_zonemgr_t *zmgr, dns_zone_t *zone);
/*
* Bring the zone under control of a zone manager.
*
* Require:
* 'zmgr' to be a valid zone manager.
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zonemgr_forcemaint(dns_zonemgr_t *zmgr);
/*
* Force zone maintenance of all zones managed by 'zmgr' at its
* earliest conveniene.
*/
void
dns_zonemgr_resumexfrs(dns_zonemgr_t *zmgr);
/*
* Attempt to start any stalled zone transfers.
*/
void
dns_zonemgr_shutdown(dns_zonemgr_t *zmgr);
/*
* Shut down the zone manager.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
void
dns_zonemgr_attach(dns_zonemgr_t *source, dns_zonemgr_t **target);
/*
* Attach '*target' to 'source' incrementing its external
* reference count.
*
* Require:
* 'zone' to be a valid zone.
* 'target' to be non NULL and '*target' to be NULL.
*/
void
dns_zonemgr_detach(dns_zonemgr_t **zmgrp);
/*
* Detach from a zone manager.
*
* Requires:
* '*zmgrp' is a valid, non-NULL zone manager pointer.
*
* Ensures:
* '*zmgrp' is NULL.
*/
void
dns_zonemgr_releasezone(dns_zonemgr_t *zmgr, dns_zone_t *zone);
/*
* Release 'zone' from the managed by 'zmgr'. 'zmgr' is implicitly
* detached from 'zone'.
*
* Requires:
* 'zmgr' to be a valid zone manager.
* 'zone' to be a valid zone.
* 'zmgr' == 'zone->zmgr'
*
* Ensures:
* 'zone->zmgr' == NULL;
*/
void
dns_zonemgr_settransfersin(dns_zonemgr_t *zmgr, isc_uint32_t value);
/*
* Set the maximum number of simultaneous transfers in allowed by
* the zone manager.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
isc_uint32_t
dns_zonemgr_getttransfersin(dns_zonemgr_t *zmgr);
/*
* Return the the maximum number of simultaneous transfers in allowed.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
void
dns_zonemgr_settransfersperns(dns_zonemgr_t *zmgr, isc_uint32_t value);
/*
* Set the number of zone transfers allowed per nameserver.
*
* Requires:
* 'zmgr' to be a valid zone manager
*/
isc_uint32_t
dns_zonemgr_getttransfersperns(dns_zonemgr_t *zmgr);
/*
* Return the number of transfers allowed per nameserver.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
void
dns_zonemgr_setiolimit(dns_zonemgr_t *zmgr, isc_uint32_t iolimit);
/*
* Set the number of simultaneous file descriptors available for
* reading and writing masterfiles.
*
* Requires:
* 'zmgr' to be a valid zone manager.
* 'iolimit' to be positive.
*/
isc_uint32_t
dns_zonemgr_getiolimit(dns_zonemgr_t *zmgr);
/*
* Get the number of simultaneous file descriptors available for
* reading and writing masterfiles.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
void
dns_zonemgr_setserialqueryrate(dns_zonemgr_t *zmgr, unsigned int value);
/*
* Set the number of SOA queries sent per second.
*
* Requires:
* 'zmgr' to be a valid zone manager
*/
unsigned int
dns_zonemgr_getserialqueryrate(dns_zonemgr_t *zmgr);
/*
* Return the number of SOA queries sent per second.
*
* Requires:
* 'zmgr' to be a valid zone manager.
*/
unsigned int
dns_zonemgr_getcount(dns_zonemgr_t *zmgr, int state);
/*
* Returns the number of zones in the specified state.
*
* Requires:
* 'zmgr' to be a valid zone manager.
* 'state' to be a valid DNS_ZONESTATE_ constant.
*/
void
dns_zone_forcereload(dns_zone_t *zone);
/*
* Force a reload of specified zone.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_boolean_t
dns_zone_isforced(dns_zone_t *zone);
/*
* Check if the zone is waiting a forced reload.
*
* Requires:
* 'zone' to be a valid zone.
*/
isc_result_t
dns_zone_setstatistics(dns_zone_t *zone, isc_boolean_t on);
/*
* Make the zone keep or not keep an array of statistics
* counter.
*
* Requires:
* zone be a valid zone.
*/
isc_uint64_t *
dns_zone_getstatscounters(dns_zone_t *zone);
/*
* Requires:
* zone be a valid zone.
*
* Returns:
* A pointer to the zone's array of statistics counters,
* or NULL if it has none.
*/
void
dns_zone_dialup(dns_zone_t *zone);
/*
* Perform dialup-time maintenance on 'zone'.
*/
void
dns_zone_setdialup(dns_zone_t *zone, dns_dialuptype_t dialup);
/*
* Set the dialup type of 'zone' to 'dialup'.
*
* Requires:
* 'zone' to be valid initialised zone.
* 'dialup' to be a valid dialup type.
*/
void
dns_zone_log(dns_zone_t *zone, int level, const char *msg, ...)
ISC_FORMAT_PRINTF(3, 4);
/*
* Log the message 'msg...' at 'level', including text that identifies
* the message as applying to 'zone'.
*/
void
dns_zone_logc(dns_zone_t *zone, isc_logcategory_t *category, int level,
const char *msg, ...) ISC_FORMAT_PRINTF(4, 5);
/*
* Log the message 'msg...' at 'level', including text that identifies
* the message as applying to 'zone'.
*/
void
dns_zone_name(dns_zone_t *zone, char *buf, size_t len);
/*
* Return the name of the zone with class and view.
*
* Requires:
* 'zone' to be valid.
* 'buf' to be non NULL.
*/
isc_result_t
dns_zone_checknames(dns_zone_t *zone, dns_name_t *name, dns_rdata_t *rdata);
/*
* Check if this record meets the check-names policy.
*
* Requires:
* 'zone' to be valid.
* 'name' to be valid.
* 'rdata' to be valid.
*
* Returns:
* DNS_R_SUCCESS passed checks.
* DNS_R_BADOWNERNAME failed ownername checks.
* DNS_R_BADNAME failed rdata checks.
*/
ISC_LANG_ENDDECLS
#endif /* DNS_ZONE_H */