1 #include <netlink/cli/utils.h> 2 3 static void change_cb(struct nl_cache *cache, struct nl_object *obj, 4 int action, void *data) 5 { 6 struct nfnl_ct *ct = (struct nfnl_ct *) obj; 7 static struct nl_addr *hack = NULL; 8 9 if (!hack) 10 nl_addr_parse("194.88.212.233", AF_INET, &hack); 11 12 if (!nl_addr_cmp(hack, nfnl_ct_get_src(ct, 1)) || 13 !nl_addr_cmp(hack, nfnl_ct_get_dst(ct, 1))) { 14 struct nl_dump_params dp = { 15 .dp_type = NL_DUMP_LINE, 16 .dp_fd = stdout, 17 }; 18 19 printf("UPDATE "); 20 nl_object_dump(obj, &dp); 21 } 22 } 23 24 int main(int argc, char *argv[]) 25 { 26 struct nl_cache_mngr *mngr; 27 struct nl_sock *sock; 28 struct nl_cache *ct; 29 int err; 30 31 sock = nl_cli_alloc_socket(); 32 33 err = nl_cache_mngr_alloc(sock, NETLINK_NETFILTER, NL_AUTO_PROVIDE, &mngr); 34 if (err < 0) { 35 nl_perror(err, "nl_cache_mngr_alloc"); 36 return -1; 37 } 38 39 err = nl_cache_mngr_add(mngr, "netfilter/ct", &change_cb, NULL, &ct); 40 if (err < 0) { 41 nl_perror(err, "nl_cache_mngr_add(netfilter/ct)"); 42 return -1; 43 } 44 45 for (;;) { 46 int err = nl_cache_mngr_poll(mngr, 5000); 47 if (err < 0) { 48 nl_perror(err, "nl_cache_mngr_poll()"); 49 return -1; 50 } 51 52 } 53 54 nl_cache_mngr_free(mngr); 55 56 return 0; 57 } 58
