static void obj_input(struct nl_object *obj, void *arg)
{
struct nl_dump_params dp = {
.dp_type = NL_DUMP_STATS,
.dp_fd = stdout,
.dp_dump_msgtype = 1,
};
nl_object_dump(obj, &dp);
}
static int event_input(struct nl_msg *msg, void *arg)
{
if (nl_msg_parse(msg, &obj_input, NULL) < 0)
fprintf(stderr, "<<EVENT>> Unknown message type\n");
/* Exit nl_recvmsgs_def() and return to the main select() */
return NL_STOP;
}
int main(int argc, char *argv[])
{
struct nl_sock *nf_sock;
struct nl_sock *rt_sock;
struct nl_cache *link_cache;
struct nfnl_log *log;
enum nfnl_log_copy_mode copy_mode;
uint32_t copy_range;
int err;
int family;
nf_sock = nl_cli_alloc_socket();
nl_socket_disable_seq_check(nf_sock);
nl_socket_modify_cb(nf_sock, NL_CB_VALID, NL_CB_CUSTOM, event_input, NULL);
if ((argc > 1 && !strcasecmp(argv[1], "-h")) || argc < 3) {
printf("Usage: nf-log family group [ copy_mode ] "
"[copy_range] \n");
return 2;
}
nl_cli_connect(nf_sock, NETLINK_NETFILTER);
family = nl_str2af(argv[1]);
if (family == AF_UNSPEC)
nl_cli_fatal(NLE_INVAL, "Unknown family \"%s\": %s",
argv[1], nl_geterror(family));
nfnl_log_pf_unbind(nf_sock, family);
if ((err = nfnl_log_pf_bind(nf_sock, family)) < 0)
nl_cli_fatal(err, "Unable to bind logger: %s",
nl_geterror(err));
log = alloc_log();
nfnl_log_set_group(log, atoi(argv[2]));
copy_mode = NFNL_LOG_COPY_META;
if (argc > 3) {
copy_mode = nfnl_log_str2copy_mode(argv[3]);
if (copy_mode < 0)
nl_cli_fatal(copy_mode,
"Unable to parse copy mode \"%s\": %s",
argv[3], nl_geterror(copy_mode));
}
nfnl_log_set_copy_mode(log, copy_mode);
copy_range = 0xFFFF;
if (argc > 4)
copy_mode = atoi(argv[4]);
nfnl_log_set_copy_range(log, copy_range);
if ((err = nfnl_log_create(nf_sock, log)) < 0)
nl_cli_fatal(err, "Unable to bind instance: %s",
nl_geterror(err));
{
struct nl_dump_params dp = {
.dp_type = NL_DUMP_STATS,
.dp_fd = stdout,
.dp_dump_msgtype = 1,
};
printf("log params: ");
nl_object_dump((struct nl_object *) log, &dp);
}
rt_sock = nl_cli_alloc_socket();
nl_cli_connect(rt_sock, NETLINK_ROUTE);
link_cache = nl_cli_link_alloc_cache(rt_sock);
while (1) {
fd_set rfds;
int nffd, rtfd, maxfd, retval;
FD_ZERO(&rfds);
maxfd = nffd = nl_socket_get_fd(nf_sock);
FD_SET(nffd, &rfds);
rtfd = nl_socket_get_fd(rt_sock);
FD_SET(rtfd, &rfds);
if (maxfd < rtfd)
maxfd = rtfd;
/* wait for an incoming message on the netlink nf_socket */
retval = select(maxfd+1, &rfds, NULL, NULL, NULL);
if (retval) {
if (FD_ISSET(nffd, &rfds))
nl_recvmsgs_default(nf_sock);
if (FD_ISSET(rtfd, &rfds))
nl_recvmsgs_default(rt_sock);
}
}
return 0;
}
void
iface_mon_event(void)
{
nl_recvmsgs_default(iface_mon_sock);
}
void CNL80211::readNlMessage() {
//this function should call the apropriate call back functions
nl_recvmsgs_default(m_nlSocket);
}
static void obj_input(struct nl_object *obj, void *arg)
{
struct nl_dump_params dp = {
.dp_type = NL_DUMP_STATS,
.dp_fd = stdout,
.dp_dump_msgtype = 1,
};
nl_object_dump(obj, &dp);
}
static int event_input(struct nl_msg *msg, void *arg)
{
if (nl_msg_parse(msg, &obj_input, NULL) < 0)
fprintf(stderr, "<<EVENT>> Unknown message type\n");
/* Exit nl_recvmsgs_def() and return to the main select() */
return NL_STOP;
}
int main(int argc, char *argv[])
{
struct nl_handle *nlh;
int err = 1;
int i, idx;
static const struct {
enum nfnetlink_groups gr_id;
const char* gr_name;
} known_groups[] = {
{ NFNLGRP_CONNTRACK_NEW, "ct-new" },
{ NFNLGRP_CONNTRACK_UPDATE, "ct-update" },
{ NFNLGRP_CONNTRACK_DESTROY, "ct-destroy" },
{ NFNLGRP_NONE, NULL }
};
if (nltool_init(argc, argv) < 0)
return -1;
nlh = nltool_alloc_handle();
if (nlh == NULL)
return -1;
nl_disable_sequence_check(nlh);
nl_socket_modify_cb(nlh, NL_CB_VALID, NL_CB_CUSTOM, event_input, NULL);
if (argc > 1 && !strcasecmp(argv[1], "-h")) {
printf("Usage: nf-monitor [<groups>]\n");
printf("Known groups:");
for (i = 0; known_groups[i].gr_id != NFNLGRP_NONE; i++)
printf(" %s", known_groups[i].gr_name);
printf("\n");
return 2;
}
if (nfnl_connect(nlh) < 0) {
fprintf(stderr, "%s\n", nl_geterror());
goto errout;
}
for (idx = 1; argc > idx; idx++) {
for (i = 0; known_groups[i].gr_id != NFNLGRP_NONE; i++) {
if (!strcmp(argv[idx], known_groups[i].gr_name)) {
if (nl_socket_add_membership(nlh, known_groups[i].gr_id) < 0) {
fprintf(stderr, "%s: %s\n", argv[idx], nl_geterror());
goto errout;
}
break;
}
}
if (known_groups[i].gr_id == NFNLGRP_NONE)
fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
}
while (1) {
fd_set rfds;
int fd, retval;
fd = nl_socket_get_fd(nlh);
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
/* wait for an incoming message on the netlink socket */
retval = select(fd+1, &rfds, NULL, NULL, NULL);
if (retval) {
/* FD_ISSET(fd, &rfds) will be true */
nl_recvmsgs_default(nlh);
}
}
nl_close(nlh);
errout:
return err;
}
