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/*
* (C) 2007 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "conntrackd.h"
#include "cache.h"
#include "netlink.h"
#include "us-conntrack.h"
#include "log.h"
#include <string.h>
#include <errno.h>
static void add_wt(struct us_conntrack *u)
{
int ret;
char __ct[nfct_maxsize()];
struct nf_conntrack *ct = (struct nf_conntrack *)(void*) __ct;
ret = nl_exist_conntrack(STATE(request), u->ct);
switch (ret) {
case -1:
dlog(LOG_ERR, "cache_wt problem: %s", strerror(errno));
dlog_ct(STATE(log), u->ct, NFCT_O_PLAIN);
break;
case 0:
memcpy(ct, u->ct, nfct_maxsize());
if (nl_create_conntrack(STATE(dump), ct) == -1) {
dlog(LOG_ERR, "cache_wt create: %s", strerror(errno));
dlog_ct(STATE(log), u->ct, NFCT_O_PLAIN);
}
break;
case 1:
memcpy(ct, u->ct, nfct_maxsize());
if (nl_update_conntrack(STATE(dump), ct) == -1) {
dlog(LOG_ERR, "cache_wt crt-upd: %s", strerror(errno));
dlog_ct(STATE(log), u->ct, NFCT_O_PLAIN);
}
break;
}
}
static void upd_wt(struct us_conntrack *u)
{
char __ct[nfct_maxsize()];
struct nf_conntrack *ct = (struct nf_conntrack *)(void*) __ct;
memcpy(ct, u->ct, nfct_maxsize());
if (nl_update_conntrack(STATE(dump), ct) == -1) {
dlog(LOG_ERR, "cache_wt update:%s", strerror(errno));
dlog_ct(STATE(log), u->ct, NFCT_O_PLAIN);
}
}
static void writethrough_add(struct us_conntrack *u, void *data)
{
add_wt(u);
}
static void writethrough_update(struct us_conntrack *u, void *data)
{
upd_wt(u);
}
static void writethrough_destroy(struct us_conntrack *u, void *data)
{
nl_destroy_conntrack(STATE(dump), u->ct);
}
struct cache_feature writethrough_feature = {
.add = writethrough_add,
.update = writethrough_update,
.destroy = writethrough_destroy,
};
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