119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
/*
|
|
* validator/val_kcache.h - validator key shared cache with validated keys
|
|
*
|
|
* Copyright (c) 2007, NLnet Labs. All rights reserved.
|
|
*
|
|
* This software is open source.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of the NLNET LABS nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* This file contains functions for caching validated key entries.
|
|
*/
|
|
|
|
#ifndef VALIDATOR_VAL_KCACHE_H
|
|
#define VALIDATOR_VAL_KCACHE_H
|
|
#include "util/storage/slabhash.h"
|
|
struct key_entry_key;
|
|
struct key_entry_data;
|
|
struct config_file;
|
|
struct regional;
|
|
struct module_qstate;
|
|
|
|
/**
|
|
* Key cache
|
|
*/
|
|
struct key_cache {
|
|
/** uses slabhash for storage, type key_entry_key, key_entry_data */
|
|
struct slabhash* slab;
|
|
};
|
|
|
|
/**
|
|
* Create the key cache
|
|
* @param cfg: config settings for the key cache.
|
|
* @return new key cache or NULL on malloc failure.
|
|
*/
|
|
struct key_cache* key_cache_create(struct config_file* cfg);
|
|
|
|
/**
|
|
* Delete the key cache
|
|
* @param kcache: to delete
|
|
*/
|
|
void key_cache_delete(struct key_cache* kcache);
|
|
|
|
/**
|
|
* Insert or update a key cache entry. Note that the insert may silently
|
|
* fail if there is not enough memory.
|
|
*
|
|
* @param kcache: the key cache.
|
|
* @param kkey: key entry key, assumed malloced in a region, is copied
|
|
* to perform update or insertion. Its data pointer is also copied.
|
|
* @param qstate: store errinf reason in case its bad.
|
|
*/
|
|
void key_cache_insert(struct key_cache* kcache, struct key_entry_key* kkey,
|
|
struct module_qstate* qstate);
|
|
|
|
/**
|
|
* Remove an entry from the key cache.
|
|
* @param kcache: the key cache.
|
|
* @param name: for what name to look; uncompressed wireformat
|
|
* @param namelen: length of the name.
|
|
* @param key_class: class of the key.
|
|
*/
|
|
void key_cache_remove(struct key_cache* kcache,
|
|
uint8_t* name, size_t namelen, uint16_t key_class);
|
|
|
|
/**
|
|
* Lookup key entry in the cache. Looks up the closest key entry above the
|
|
* given name.
|
|
* @param kcache: the key cache.
|
|
* @param name: for what name to look; uncompressed wireformat
|
|
* @param namelen: length of the name.
|
|
* @param key_class: class of the key.
|
|
* @param region: a copy of the key_entry is allocated in this region.
|
|
* @param now: current time.
|
|
* @return pointer to a newly allocated key_entry copy in the region, if
|
|
* a key entry could be found, and allocation succeeded and TTL was OK.
|
|
* Otherwise, NULL is returned.
|
|
*/
|
|
struct key_entry_key* key_cache_obtain(struct key_cache* kcache,
|
|
uint8_t* name, size_t namelen, uint16_t key_class,
|
|
struct regional* region, time_t now);
|
|
|
|
/**
|
|
* Get memory in use by the key cache.
|
|
* @param kcache: the key cache.
|
|
* @return memory in use in bytes.
|
|
*/
|
|
size_t key_cache_get_mem(struct key_cache* kcache);
|
|
|
|
#endif /* VALIDATOR_VAL_KCACHE_H */
|