/* 
 * dhcpcd - DHCP client daemon
 * Copyright (c) 2006-2010 Roy Marples <roy@marples.name>
 * All rights reserved

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef DHCPCD_H
#define DHCPCD_H

#include <sys/socket.h>
#include <net/if.h>

#include <limits.h>

#include "dhcp.h"
#include "if-options.h"

#define HWADDR_LEN 20
#define IF_SSIDSIZE 33
#define PROFILE_LEN 64

enum DHS {
        DHS_INIT,
        DHS_DISCOVER,
        DHS_REQUEST,
        DHS_BOUND,
        DHS_RENEW,
        DHS_REBIND,
        DHS_REBOOT,
        DHS_INFORM,
        DHS_RENEW_REQUESTED,
        DHS_INIT_IPV4LL,
        DHS_PROBE
};

#define LINK_UP         1
#define LINK_UNKNOWN    0
#define LINK_DOWN       -1

struct if_state {
        enum DHS state;
        char profile[PROFILE_LEN];
        struct if_options *options;
        struct dhcp_message *sent;
        struct dhcp_message *offer;
        struct dhcp_message *new;
        struct dhcp_message *old;
        struct dhcp_lease lease;
        const char *reason;
        time_t interval;
        time_t nakoff;
        uint32_t xid;
        int socket;
        int probes;
        int claims;
        int conflicts;
        time_t defend;
        struct in_addr fail;
        size_t arping_index;
};

struct interface {
        char name[IF_NAMESIZE];
        struct if_state *state;

        int flags;
        sa_family_t family;
        unsigned char hwaddr[HWADDR_LEN];
        size_t hwlen;
        int metric;
        int carrier;
        int wireless;
        char ssid[IF_SSIDSIZE];

        int raw_fd;
        int udp_fd;
        int arp_fd;
        size_t buffer_size, buffer_len, buffer_pos;
        unsigned char *buffer;

        struct in_addr addr;
        struct in_addr net;
        struct in_addr dst;

        char leasefile[PATH_MAX];
        time_t start_uptime;

        unsigned char *clientid;

        struct interface *next;
};

extern int pidfd;
extern int options;
extern int ifac;
extern char **ifav;
extern int ifdc;
extern char **ifdv;
extern struct interface *ifaces;

#endif