/*
 * netlink-events.c
 * This file is part of Network-inador
 *
 * Copyright (C) 2019, 2020 - Félix Arreola Rodríguez
 *
 * Network-inador is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Network-inador is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Network-inador; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, 
 * Boston, MA  02110-1301  USA
 */

#include <stdio.h>
#include <unistd.h>

#include <netlink/socket.h>
#include <netlink/msg.h>

#include <linux/nl80211.h>

#include <fcntl.h>

#include "network-inador-private.h"
#include "interfaces.h"
#include "ip-address.h"
#include "routes.h"

int netlink_events_route_dispatcher (struct nl_msg *msg, void *arg) {
	struct nlmsghdr *reply;
	
	reply = nlmsg_hdr (msg);
	
	switch (reply->nlmsg_type) {
		case RTM_NEWLINK:
			return interface_receive_message_newlink (msg, arg);
			break;
		case RTM_DELLINK:
			return interface_receive_message_dellink (msg, arg);
			break;
		case RTM_NEWADDR:
			return ip_address_receive_message_newaddr (msg, arg);
			break;
		case RTM_DELADDR:
			return ip_address_receive_message_deladdr (msg, arg);
			break;
		case RTM_NEWROUTE:
			return routes_receive_message_newroute (msg, arg);
			break;
		case RTM_DELROUTE:
			return routes_receive_message_delroute (msg, arg);
			break;
	}
	
	return NL_SKIP;
}

void netlink_events_route_events_handle_read (void *data, int fd, int condition) {
	NetworkInadorHandle *handle = (NetworkInadorHandle *) data;
	
	nl_recvmsgs_default (handle->route_events.nl_sock);
}

void netlink_events_pipe_route_handle_read (void *data, int fd, int condition) {
	NetworkInadorHandle *handle = (NetworkInadorHandle *) data;
	char buffer[8192];
	int ret;
	
	ret = read (handle->pipe_routes[0], buffer, sizeof (buffer));
	
	if (ret > 0) {
		/* Leimos algo en el aviso de re-procesar rutas */
		routes_ask (handle);
	} else if (ret == 0) {
		/* Cerrar el pipe */
		close (handle->pipe_routes[0]);
		handle->pipe_routes[0] = -1;
		handle->ops.input_remove (handle->source_pipe_routes);
		handle->source_pipe_routes = 0;
	}
}