filter.c
/*
* (C) 2005-2011 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.
*/
#include "internal/internal.h"
static void filter_attr_l4proto(struct nfct_filter *filter, const void *value)
{
int protonum;
if (filter->l4proto_len >= __FILTER_L4PROTO_MAX)
return;
protonum = *(int *)value;
if (protonum >= IPPROTO_MAX)
return;
set_bit(protonum, filter->l4proto_map);
filter->l4proto_len++;
}
#ifndef BITS_PER_BYTE
#define BITS_PER_BYTE 8
#endif
static void
filter_attr_l4proto_state(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_proto *this = value;
if (this->state >= sizeof(filter->l4proto_state[0].map) * BITS_PER_BYTE)
return;
set_bit_u16(this->state, &filter->l4proto_state[this->proto].map);
filter->l4proto_state[this->proto].len++;
}
static void filter_attr_src_ipv4(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_ipv4 *this = value;
if (filter->l3proto_elems[0] >= __FILTER_ADDR_MAX)
return;
filter->l3proto[0][filter->l3proto_elems[0]].addr = this->addr;
filter->l3proto[0][filter->l3proto_elems[0]].mask = this->mask;
filter->l3proto_elems[0]++;
}
static void filter_attr_dst_ipv4(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_ipv4 *this = value;
if (filter->l3proto_elems[1] >= __FILTER_ADDR_MAX)
return;
filter->l3proto[1][filter->l3proto_elems[1]].addr = this->addr;
filter->l3proto[1][filter->l3proto_elems[1]].mask = this->mask;
filter->l3proto_elems[1]++;
}
static void filter_attr_src_ipv6(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_ipv6 *this = value;
if (filter->l3proto_elems_ipv6[0] >= __FILTER_IPV6_MAX)
return;
memcpy(filter->l3proto_ipv6[0][filter->l3proto_elems_ipv6[0]].addr,
this->addr, sizeof(uint32_t)*4);
memcpy(filter->l3proto_ipv6[0][filter->l3proto_elems_ipv6[0]].mask,
this->mask, sizeof(uint32_t)*4);
filter->l3proto_elems_ipv6[0]++;
}
static void filter_attr_dst_ipv6(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_ipv6 *this = value;
if (filter->l3proto_elems_ipv6[1] >= __FILTER_IPV6_MAX)
return;
memcpy(filter->l3proto_ipv6[1][filter->l3proto_elems_ipv6[1]].addr,
this->addr, sizeof(uint32_t)*4);
memcpy(filter->l3proto_ipv6[1][filter->l3proto_elems_ipv6[1]].mask,
this->mask, sizeof(uint32_t)*4);
filter->l3proto_elems_ipv6[1]++;
}
static void filter_attr_mark(struct nfct_filter *filter, const void *value)
{
const struct nfct_filter_dump_mark *this = value;
if (filter->mark_elems >= __FILTER_MARK_MAX)
return;
filter->mark[filter->mark_elems].val = this->val;
filter->mark[filter->mark_elems].mask = this->mask;
filter->mark_elems++;
}
static void filter_attr_zone(struct nfct_filter *filter, const void *value)
{
if (filter->zone_elems >= __FILTER_ZONE_MAX)
return;
filter->zone[filter->zone_elems] = *(uint16_t *) value;
filter->zone_elems++;
}
const filter_attr filter_attr_array[NFCT_FILTER_MAX] = {
[NFCT_FILTER_L4PROTO] = filter_attr_l4proto,
[NFCT_FILTER_L4PROTO_STATE] = filter_attr_l4proto_state,
[NFCT_FILTER_SRC_IPV4] = filter_attr_src_ipv4,
[NFCT_FILTER_DST_IPV4] = filter_attr_dst_ipv4,
[NFCT_FILTER_SRC_IPV6] = filter_attr_src_ipv6,
[NFCT_FILTER_DST_IPV6] = filter_attr_dst_ipv6,
[NFCT_FILTER_MARK] = filter_attr_mark,
[NFCT_FILTER_ZONE] = filter_attr_zone,
};
nfct_filter_dump_mark
Definition libnetfilter_conntrack.h:543
nfct_filter_ipv4
Definition libnetfilter_conntrack.h:497
nfct_filter_ipv6
Definition libnetfilter_conntrack.h:501
nfct_filter_proto
Definition libnetfilter_conntrack.h:493