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/*
* Copyright (C) 2014 John Crispin <blogic@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _CACHE_H__
#define _CACHE_H__
#include <libubox/avl.h>
#include <libubox/list.h>
#include <libubox/blob.h>
#include "dns.h"
#include "interface.h"
struct cache_service {
struct avl_node avl;
const char *entry;
const char *host;
uint32_t ttl;
time_t time;
struct interface *iface;
int refresh;
};
struct cache_record {
struct avl_node avl;
const char *record;
uint16_t type;
uint32_t ttl;
int port;
const char *txt;
const uint8_t *rdata;
uint16_t rdlength;
time_t time;
struct interface *iface;
struct sockaddr_storage from;
int refresh;
};
extern struct avl_tree services;
extern struct avl_tree records;
int cache_init(void);
void cache_update(void);
void cache_cleanup(struct interface *iface);
void cache_answer(struct interface *iface, struct sockaddr *from, uint8_t *base,
int blen, char *name, struct dns_answer *a, uint8_t *rdata,
int flush);
int cache_host_is_known(char *record);
void cache_dump_records(struct blob_buf *buf, const char *name, int array,
const char **hostname);
void cache_dump_recursive(struct blob_buf *b, const char *name, uint16_t type, struct interface *iface);
#endif
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