| /* This example is in the public domain. */ |
| #include <stdlib.h> |
| #include <time.h> |
| #include <string.h> |
| #include <netinet/in.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; |
| struct nfct_helper_policy *p; |
| int ret; |
| |
| if (argc != 3) { |
| printf("Usage: %s [helper-name] [queue-num]\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]); |
| nfct_helper_attr_set_u32(nfct_helper, NFCTH_ATTR_QUEUE_NUM, atoi(argv[2])); |
| nfct_helper_attr_set_u16(nfct_helper, NFCTH_ATTR_PROTO_L3NUM, AF_INET); |
| nfct_helper_attr_set_u8(nfct_helper, NFCTH_ATTR_PROTO_L4NUM, IPPROTO_TCP); |
| |
| p = nfct_helper_policy_alloc(); |
| if (p == NULL) { |
| perror("OOM"); |
| exit(EXIT_FAILURE); |
| } |
| nfct_helper_policy_attr_set(p, NFCTH_ATTR_POLICY_NAME, "test"); |
| nfct_helper_policy_attr_set_u32(p, NFCTH_ATTR_POLICY_TIMEOUT, 100); |
| nfct_helper_policy_attr_set_u32(p, NFCTH_ATTR_POLICY_MAX, 100); |
| |
| nfct_helper_attr_set(nfct_helper, NFCTH_ATTR_POLICY, p); |
| |
| seq = time(NULL); |
| nlh = nfct_helper_nlmsg_build_hdr(buf, NFNL_MSG_CTHELPER_NEW, |
| NLM_F_CREATE | NLM_F_ACK, seq); |
| nfct_helper_nlmsg_build_payload(nlh, nfct_helper); |
| |
| nfct_helper_free(nfct_helper); |
| nfct_helper_policy_free(p); |
| |
| 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; |
| } |