libnetfilter_cthelper 1.0.1
nfct-helper-del.c
1/* This example is in the public domain. */
2#include <stdlib.h>
3#include <time.h>
4#include <string.h>
5#include <libmnl/libmnl.h>
6#include <libnetfilter_cthelper/libnetfilter_cthelper.h>
7
8int main(int argc, char *argv[])
9{
10 struct mnl_socket *nl;
11 char buf[MNL_SOCKET_BUFFER_SIZE];
12 struct nlmsghdr *nlh;
13 uint32_t portid, seq;
15 int ret;
16
17 if (argc != 2) {
18 fprintf(stderr, "Usage: %s [name]\n", argv[0]);
19 exit(EXIT_FAILURE);
20 }
21
23 if (nfct_helper == NULL) {
24 perror("OOM");
25 exit(EXIT_FAILURE);
26 }
27
28 nfct_helper_attr_set(nfct_helper, NFCTH_ATTR_NAME, argv[1]);
29
30 seq = time(NULL);
31 nlh = nfct_helper_nlmsg_build_hdr(buf, NFNL_MSG_CTHELPER_DEL,
32 NLM_F_ACK, seq);
34
36
37 nl = mnl_socket_open(NETLINK_NETFILTER);
38 if (nl == NULL) {
39 perror("mnl_socket_open");
40 exit(EXIT_FAILURE);
41 }
42
43 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
44 perror("mnl_socket_bind");
45 exit(EXIT_FAILURE);
46 }
47 portid = mnl_socket_get_portid(nl);
48
49 if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
50 perror("mnl_socket_send");
51 exit(EXIT_FAILURE);
52 }
53
54 ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
55 while (ret > 0) {
56 ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
57 if (ret <= 0)
58 break;
59 ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
60 }
61 if (ret == -1) {
62 perror("error");
63 exit(EXIT_FAILURE);
64 }
65 mnl_socket_close(nl);
66
67 return EXIT_SUCCESS;
68}
struct nfct_helper * nfct_helper_alloc(void)
void nfct_helper_free(struct nfct_helper *h)
void nfct_helper_attr_set(struct nfct_helper *nfct_helper, enum nfct_helper_attr_type type, const void *data)
void nfct_helper_nlmsg_build_payload(struct nlmsghdr *nlh, struct nfct_helper *nfct_helper)
struct nlmsghdr * nfct_helper_nlmsg_build_hdr(char *buf, uint8_t cmd, uint16_t flags, uint32_t seq)