nfct-timeout-get.c
/*
* (C) 2005-2012 by Pablo Neira Ayuso <pablo@netfilter.org>
* (C) 2012 by Vyatta Inc. <http://www.vyatta.com>
*
* 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 <stdlib.h>
#include <time.h>
#include <string.h>
#include <netinet/in.h>
#include <linux/netfilter/nfnetlink_cttimeout.h>
#include <libmnl/libmnl.h>
#include <libnetfilter_cttimeout/libnetfilter_cttimeout.h>
static int timeout_cb(const struct nlmsghdr *nlh, void *data)
{
struct nfct_timeout *t;
char buf[4096];
t = nfct_timeout_alloc();
if (t == NULL) {
perror("OOM");
goto err;
}
if (nfct_timeout_nlmsg_parse_payload(nlh, t) < 0) {
perror("nfct_timeout_nlmsg_parse_payload");
goto err_free;
}
nfct_timeout_snprintf(buf, sizeof(buf), t, NFCT_TIMEOUT_O_DEFAULT, 0);
printf("%s\n", buf);
err_free:
nfct_timeout_free(t);
err:
return MNL_CB_OK;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
uint32_t portid, seq;
struct nfct_timeout *t = NULL;
int ret;
if (argc == 2) {
t = nfct_timeout_alloc();
if (t == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
}
seq = time(NULL);
if (t == NULL) {
nlh = nfct_timeout_nlmsg_build_hdr(buf, IPCTNL_MSG_TIMEOUT_GET,
NLM_F_DUMP, seq);
} else {
nlh = nfct_timeout_nlmsg_build_hdr(buf, IPCTNL_MSG_TIMEOUT_GET,
NLM_F_ACK, seq);
nfct_timeout_attr_set(t, NFCT_TIMEOUT_ATTR_NAME, argv[1]);
nfct_timeout_nlmsg_build_payload(nlh, t);
nfct_timeout_free(t);
}
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, timeout_cb, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
nfct_timeout_snprintf
int nfct_timeout_snprintf(char *buf, size_t size, const struct nfct_timeout *, unsigned int type, unsigned int flags)
Definition: libnetfilter_cttimeout.c:441
nfct_timeout_free
void nfct_timeout_free(struct nfct_timeout *)
Definition: libnetfilter_cttimeout.c:206
nfct_timeout_alloc
struct nfct_timeout * nfct_timeout_alloc(void)
Definition: libnetfilter_cttimeout.c:190
nfct_timeout_attr_set
int nfct_timeout_attr_set(struct nfct_timeout *t, uint32_t type, const void *data)
Definition: libnetfilter_cttimeout.c:221
nfct_timeout_nlmsg_build_payload
void nfct_timeout_nlmsg_build_payload(struct nlmsghdr *, const struct nfct_timeout *)
Definition: libnetfilter_cttimeout.c:507
nfct_timeout_nlmsg_parse_payload
int nfct_timeout_nlmsg_parse_payload(const struct nlmsghdr *nlh, struct nfct_timeout *)
Definition: libnetfilter_cttimeout.c:633
nfct_timeout_nlmsg_build_hdr
struct nlmsghdr * nfct_timeout_nlmsg_build_hdr(char *buf, uint8_t cmd, uint16_t flags, uint32_t seq)
Definition: libnetfilter_cttimeout.c:481