libnetfilter_conntrack 1.1.0
filter_dump.c
1/*
2 * (C) 2005-2012 by Pablo Neira Ayuso <pablo@netfilter.org>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#include "internal/internal.h"
11#include <libmnl/libmnl.h>
12
13static void
14set_filter_dump_attr_mark(struct nfct_filter_dump *filter_dump,
15 const void *value)
16{
17 const struct nfct_filter_dump_mark *this = value;
18
19 filter_dump->mark.val = this->val;
20 filter_dump->mark.mask = this->mask;
21}
22
23static void
24set_filter_dump_attr_status(struct nfct_filter_dump *filter_dump,
25 const void *value)
26{
27 const struct nfct_filter_dump_mark *this = value;
28
29 filter_dump->status.val = this->val;
30 filter_dump->status.mask = this->mask;
31}
32
33static void
34set_filter_dump_attr_family(struct nfct_filter_dump *filter_dump,
35 const void *value)
36{
37 filter_dump->l3num = *((uint8_t *)value);
38}
39
40static void
41set_filter_dump_attr_zone(struct nfct_filter_dump *filter_dump,
42 const void *value)
43{
44 filter_dump->zone = *((uint16_t *)value);
45}
46
47static void
48set_filter_dump_attr_tuple(struct nfct_filter_dump *filter_dump,
49 const void *value)
50{
51 memcpy(&filter_dump->ct, value, sizeof(struct nf_conntrack));
52}
53
54const set_filter_dump_attr set_filter_dump_attr_array[NFCT_FILTER_DUMP_MAX] = {
55 [NFCT_FILTER_DUMP_MARK] = set_filter_dump_attr_mark,
56 [NFCT_FILTER_DUMP_L3NUM] = set_filter_dump_attr_family,
57 [NFCT_FILTER_DUMP_STATUS] = set_filter_dump_attr_status,
58 [NFCT_FILTER_DUMP_ZONE] = set_filter_dump_attr_zone,
59 [NFCT_FILTER_DUMP_TUPLE] = set_filter_dump_attr_tuple,
60};
61
62int __build_filter_dump(struct nfnlhdr *req, size_t size,
63 const struct nfct_filter_dump *filter_dump)
64{
65 return nfct_nlmsg_build_filter(&req->nlh, filter_dump);
66}
67
68int __build_filter_flush(struct nfnlhdr *req, size_t size,
69 const struct nfct_filter_dump *filter_dump)
70{
71 if (filter_dump->set & (1 << NFCT_FILTER_DUMP_TUPLE)) {
72 errno = ENOTSUP;
73 return -1;
74 }
75 return nfct_nlmsg_build_filter(&req->nlh, filter_dump);
76}