libnetfilter_cttimeout 1.0.1
nfct-timeout-get.c
1/*
2 * (C) 2005-2012 by Pablo Neira Ayuso <pablo@netfilter.org>
3 * (C) 2012 by Vyatta Inc. <http://www.vyatta.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10#include <stdlib.h>
11#include <time.h>
12#include <string.h>
13#include <netinet/in.h>
14
15#include <linux/netfilter/nfnetlink_cttimeout.h>
16#include <libmnl/libmnl.h>
17#include <libnetfilter_cttimeout/libnetfilter_cttimeout.h>
18
19static int timeout_cb(const struct nlmsghdr *nlh, void *data)
20{
21 struct nfct_timeout *t;
22 char buf[4096];
23
25 if (t == NULL) {
26 perror("OOM");
27 goto err;
28 }
29
30 if (nfct_timeout_nlmsg_parse_payload(nlh, t) < 0) {
31 perror("nfct_timeout_nlmsg_parse_payload");
32 goto err_free;
33 }
34
35 nfct_timeout_snprintf(buf, sizeof(buf), t, NFCT_TIMEOUT_O_DEFAULT, 0);
36 printf("%s\n", buf);
37
38err_free:
40err:
41 return MNL_CB_OK;
42}
43
44int main(int argc, char *argv[])
45{
46 struct mnl_socket *nl;
47 char buf[MNL_SOCKET_BUFFER_SIZE];
48 struct nlmsghdr *nlh;
49 uint32_t portid, seq;
50 struct nfct_timeout *t = NULL;
51 int ret;
52
53 if (argc == 2) {
55 if (t == NULL) {
56 perror("OOM");
57 exit(EXIT_FAILURE);
58 }
59 }
60
61 seq = time(NULL);
62 if (t == NULL) {
63 nlh = nfct_timeout_nlmsg_build_hdr(buf, IPCTNL_MSG_TIMEOUT_GET,
64 NLM_F_DUMP, seq);
65 } else {
66 nlh = nfct_timeout_nlmsg_build_hdr(buf, IPCTNL_MSG_TIMEOUT_GET,
67 NLM_F_ACK, seq);
68 nfct_timeout_attr_set(t, NFCT_TIMEOUT_ATTR_NAME, argv[1]);
71 }
72
73 nl = mnl_socket_open(NETLINK_NETFILTER);
74 if (nl == NULL) {
75 perror("mnl_socket_open");
76 exit(EXIT_FAILURE);
77 }
78
79 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
80 perror("mnl_socket_bind");
81 exit(EXIT_FAILURE);
82 }
83 portid = mnl_socket_get_portid(nl);
84
85 if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
86 perror("mnl_socket_send");
87 exit(EXIT_FAILURE);
88 }
89
90 ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
91 while (ret > 0) {
92 ret = mnl_cb_run(buf, ret, seq, portid, timeout_cb, NULL);
93 if (ret <= 0)
94 break;
95 ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
96 }
97 if (ret == -1) {
98 perror("error");
99 exit(EXIT_FAILURE);
100 }
101 mnl_socket_close(nl);
102
103 return EXIT_SUCCESS;
104}
int nfct_timeout_snprintf(char *buf, size_t size, const struct nfct_timeout *, unsigned int type, unsigned int flags)
void nfct_timeout_free(struct nfct_timeout *)
struct nfct_timeout * nfct_timeout_alloc(void)
int nfct_timeout_attr_set(struct nfct_timeout *t, uint32_t type, const void *data)
struct nlmsghdr * nfct_timeout_nlmsg_build_hdr(char *buf, uint8_t cmd, uint16_t flags, uint32_t seq)
void nfct_timeout_nlmsg_build_payload(struct nlmsghdr *, const struct nfct_timeout *)
int nfct_timeout_nlmsg_parse_payload(const struct nlmsghdr *nlh, struct nfct_timeout *)