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/*
* Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 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: keytable.h,v 1.11.18.3 2005/12/05 00:00:03 marka Exp $ */
#ifndef DNS_KEYTABLE_H
#define DNS_KEYTABLE_H 1
/*****
***** Module Info
*****/
/*! \file
* \brief
* The keytable module provides services for storing and retrieving DNSSEC
* trusted keys, as well as the ability to find the deepest matching key
* for a given domain name.
*
* MP:
*\li The module ensures appropriate synchronization of data structures it
* creates and manipulates.
*
* Resources:
*\li TBS
*
* Security:
*\li No anticipated impact.
*/
#include <isc/lang.h>
#include <dns/types.h>
#include <dst/dst.h>
ISC_LANG_BEGINDECLS
isc_result_t
dns_keytable_create(isc_mem_t *mctx, dns_keytable_t **keytablep);
/*%<
* Create a keytable.
*
* Requires:
*
*\li 'mctx' is a valid memory context.
*
*\li keytablep != NULL && *keytablep == NULL
*
* Ensures:
*
*\li On success, *keytablep is a valid, empty key table.
*
* Returns:
*
*\li ISC_R_SUCCESS
*
*\li Any other result indicates failure.
*/
void
dns_keytable_attach(dns_keytable_t *source, dns_keytable_t **targetp);
/*%<
* Attach *targetp to source.
*
* Requires:
*
*\li 'source' is a valid keytable.
*
*\li 'targetp' points to a NULL dns_keytable_t *.
*
* Ensures:
*
*\li *targetp is attached to source.
*/
void
dns_keytable_detach(dns_keytable_t **keytablep);
/*%<
* Detach *keytablep from its keytable.
*
* Requires:
*
*\li 'keytablep' points to a valid keytable.
*
* Ensures:
*
*\li *keytablep is NULL.
*
*\li If '*keytablep' is the last reference to the keytable,
* all resources used by the keytable will be freed
*/
isc_result_t
dns_keytable_add(dns_keytable_t *keytable, dst_key_t **keyp);
/*%<
* Add '*keyp' to 'keytable'.
*
* Notes:
*
*\li Ownership of *keyp is transferred to the keytable.
*
* Requires:
*
*\li keyp != NULL && *keyp is a valid dst_key_t *.
*
* Ensures:
*
*\li On success, *keyp == NULL
*
* Returns:
*
*\li ISC_R_SUCCESS
*
*\li Any other result indicates failure.
*/
isc_result_t
dns_keytable_findkeynode(dns_keytable_t *keytable, dns_name_t *name,
dns_secalg_t algorithm, dns_keytag_t tag,
dns_keynode_t **keynodep);
/*%<
* Search for a key named 'name', matching 'algorithm' and 'tag' in
* 'keytable'. This finds the first instance which matches. Use
* dns_keytable_findnextkeynode() to find other instances.
*
* Requires:
*
*\li 'keytable' is a valid keytable.
*
*\li 'name' is a valid absolute name.
*
*\li keynodep != NULL && *keynodep == NULL
*
* Returns:
*
*\li ISC_R_SUCCESS
*\li DNS_R_PARTIALMATCH the name existed in the keytable.
*\li ISC_R_NOTFOUND
*
*\li Any other result indicates an error.
*/
isc_result_t
dns_keytable_findnextkeynode(dns_keytable_t *keytable, dns_keynode_t *keynode,
dns_keynode_t **nextnodep);
/*%<
* Search for the next key with the same properties as 'keynode' in
* 'keytable' as found by dns_keytable_findkeynode().
*
* Requires:
*
*\li 'keytable' is a valid keytable.
*
*\li 'keynode' is a valid keynode.
*
*\li nextnodep != NULL && *nextnodep == NULL
*
* Returns:
*
*\li ISC_R_SUCCESS
*\li ISC_R_NOTFOUND
*
*\li Any other result indicates an error.
*/
isc_result_t
dns_keytable_finddeepestmatch(dns_keytable_t *keytable, dns_name_t *name,
dns_name_t *foundname);
/*%<
* Search for the deepest match of 'name' in 'keytable'.
*
* Requires:
*
*\li 'keytable' is a valid keytable.
*
*\li 'name' is a valid absolute name.
*
*\li 'foundname' is a name with a dedicated buffer.
*
* Returns:
*
*\li ISC_R_SUCCESS
*\li ISC_R_NOTFOUND
*
*\li Any other result indicates an error.
*/
void
dns_keytable_detachkeynode(dns_keytable_t *keytable,
dns_keynode_t **keynodep);
/*%<
* Give back a keynode found via dns_keytable_findkeynode().
*
* Requires:
*
*\li 'keytable' is a valid keytable.
*
*\li *keynodep is a valid keynode returned by a call to
* dns_keytable_findkeynode().
*
* Ensures:
*
*\li *keynodep == NULL
*/
isc_result_t
dns_keytable_issecuredomain(dns_keytable_t *keytable, dns_name_t *name,
isc_boolean_t *wantdnssecp);
/*%<
* Is 'name' at or beneath a trusted key?
*
* Requires:
*
*\li 'keytable' is a valid keytable.
*
*\li 'name' is a valid absolute name.
*
*\li '*wantsdnssecp' is a valid isc_boolean_t.
*
* Ensures:
*
*\li On success, *wantsdnssecp will be ISC_TRUE if and only if 'name'
* is at or beneath a trusted key.
*
* Returns:
*
*\li ISC_R_SUCCESS
*
*\li Any other result is an error.
*/
dst_key_t *
dns_keynode_key(dns_keynode_t *keynode);
/*%<
* Get the DST key associated with keynode.
*/
ISC_LANG_ENDDECLS
#endif /* DNS_KEYTABLE_H */
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