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/* This example is in the public domain. */
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <libmnl/libmnl.h>
#include <libnetfilter_cthelper/libnetfilter_cthelper.h>
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_helper *nfct_helper;
int ret;
if (argc != 2) {
fprintf(stderr, "Usage: %s [name]\n", argv[0]);
exit(EXIT_FAILURE);
}
nfct_helper = nfct_helper_alloc();
if (nfct_helper == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
nfct_helper_attr_set(nfct_helper, NFCTH_ATTR_NAME, argv[1]);
seq = time(NULL);
nlh = nfct_helper_nlmsg_build_hdr(buf, NFNL_MSG_CTHELPER_DEL,
NLM_F_ACK, seq);
nfct_helper_nlmsg_build_payload(nlh, nfct_helper);
nfct_helper_free(nfct_helper);
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, NULL, 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;
}
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