/**
 * @file
 * This file (together with sockets.h) aims to provide structs and functions from
 * - arpa/inet.h
 * - netinet/in.h
 *
 */

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef LWIP_HDR_INET_H
#define LWIP_HDR_INET_H

#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/ip_addr.h"
#include "lwip/ip6_addr.h"

#ifdef __cplusplus
extern "C" {
#endif

/* If your port already typedef's in_addr_t, define IN_ADDR_T_DEFINED
   to prevent this code from redefining it. */
#if !defined(in_addr_t) && !defined(IN_ADDR_T_DEFINED)
typedef u32_t in_addr_t;
#endif

struct in_addr {
  in_addr_t s_addr;
};

struct in6_addr {
  union {
    u32_t u32_addr[4];
    u8_t  u8_addr[16];
  } un;
#define s6_addr  un.u8_addr
};

/** 255.255.255.255 */
#define INADDR_NONE         IPADDR_NONE
/** 127.0.0.1 */
#define INADDR_LOOPBACK     IPADDR_LOOPBACK
/** 0.0.0.0 */
#define INADDR_ANY          IPADDR_ANY
/** 255.255.255.255 */
#define INADDR_BROADCAST    IPADDR_BROADCAST

/** This macro can be used to initialize a variable of type struct in6_addr
    to the IPv6 wildcard address. */
#define IN6ADDR_ANY_INIT {{{0,0,0,0}}}
/** This macro can be used to initialize a variable of type struct in6_addr
    to the IPv6 loopback address. */
#define IN6ADDR_LOOPBACK_INIT {{{0,0,0,PP_HTONL(1)}}}
/** This variable is initialized by the system to contain the wildcard IPv6 address. */
extern const struct in6_addr in6addr_any;

/* Definitions of the bits in an (IPv4) Internet address integer.

   On subnets, host and network parts are found according to
   the subnet mask, not these masks.  */
#define IN_CLASSA(a)        IP_CLASSA(a)
#define IN_CLASSA_NET       IP_CLASSA_NET
#define IN_CLASSA_NSHIFT    IP_CLASSA_NSHIFT
#define IN_CLASSA_HOST      IP_CLASSA_HOST
#define IN_CLASSA_MAX       IP_CLASSA_MAX

#define IN_CLASSB(b)        IP_CLASSB(b)
#define IN_CLASSB_NET       IP_CLASSB_NET
#define IN_CLASSB_NSHIFT    IP_CLASSB_NSHIFT
#define IN_CLASSB_HOST      IP_CLASSB_HOST
#define IN_CLASSB_MAX       IP_CLASSB_MAX

#define IN_CLASSC(c)        IP_CLASSC(c)
#define IN_CLASSC_NET       IP_CLASSC_NET
#define IN_CLASSC_NSHIFT    IP_CLASSC_NSHIFT
#define IN_CLASSC_HOST      IP_CLASSC_HOST
#define IN_CLASSC_MAX       IP_CLASSC_MAX

#define IN_CLASSD(d)        IP_CLASSD(d)
#define IN_CLASSD_NET       IP_CLASSD_NET     /* These ones aren't really */
#define IN_CLASSD_NSHIFT    IP_CLASSD_NSHIFT  /*   net and host fields, but */
#define IN_CLASSD_HOST      IP_CLASSD_HOST    /*   routing needn't know. */
#define IN_CLASSD_MAX       IP_CLASSD_MAX

#define IN_MULTICAST(a)     IP_MULTICAST(a)

#define IN_EXPERIMENTAL(a)  IP_EXPERIMENTAL(a)
#define IN_BADCLASS(a)      IP_BADCLASS(a)

#define IN_LOOPBACKNET      IP_LOOPBACKNET


#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN     IP4ADDR_STRLEN_MAX
#endif
#if LWIP_IPV6
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN    IP6ADDR_STRLEN_MAX
#endif
#endif

#if LWIP_IPV4

#define inet_addr_from_ip4addr(target_inaddr, source_ipaddr) ((target_inaddr)->s_addr = ip4_addr_get_u32(source_ipaddr))
#define inet_addr_to_ip4addr(target_ipaddr, source_inaddr)   (ip4_addr_set_u32(target_ipaddr, (source_inaddr)->s_addr))
/* ATTENTION: the next define only works because both s_addr and ip4_addr_t are an u32_t effectively! */
#define inet_addr_to_ip4addr_p(target_ip4addr_p, source_inaddr)   ((target_ip4addr_p) = (ip4_addr_t*)&((source_inaddr)->s_addr))

/* directly map this to the lwip internal functions */
#define inet_addr(cp)                   ipaddr_addr(cp)
#define inet_aton(cp, addr)             ip4addr_aton(cp, (ip4_addr_t*)addr)
#define inet_ntoa(addr)                 ip4addr_ntoa((const ip4_addr_t*)&(addr))
#define inet_ntoa_r(addr, buf, buflen)  ip4addr_ntoa_r((const ip4_addr_t*)&(addr), buf, buflen)

#endif /* LWIP_IPV4 */

#if LWIP_IPV6
#define inet6_addr_from_ip6addr(target_in6addr, source_ip6addr) {(target_in6addr)->un.u32_addr[0] = (source_ip6addr)->addr[0]; \
                                                                 (target_in6addr)->un.u32_addr[1] = (source_ip6addr)->addr[1]; \
                                                                 (target_in6addr)->un.u32_addr[2] = (source_ip6addr)->addr[2]; \
                                                                 (target_in6addr)->un.u32_addr[3] = (source_ip6addr)->addr[3];}
#define inet6_addr_to_ip6addr(target_ip6addr, source_in6addr)   {(target_ip6addr)->addr[0] = (source_in6addr)->un.u32_addr[0]; \
                                                                 (target_ip6addr)->addr[1] = (source_in6addr)->un.u32_addr[1]; \
                                                                 (target_ip6addr)->addr[2] = (source_in6addr)->un.u32_addr[2]; \
                                                                 (target_ip6addr)->addr[3] = (source_in6addr)->un.u32_addr[3];}
/* ATTENTION: the next define only works because both in6_addr and ip6_addr_t are an u32_t[4] effectively! */
#define inet6_addr_to_ip6addr_p(target_ip6addr_p, source_in6addr)   ((target_ip6addr_p) = (ip6_addr_t*)(source_in6addr))

/* directly map this to the lwip internal functions */
#define inet6_aton(cp, addr)            ip6addr_aton(cp, (ip6_addr_t*)addr)
#define inet6_ntoa(addr)                ip6addr_ntoa((const ip6_addr_t*)&(addr))
#define inet6_ntoa_r(addr, buf, buflen) ip6addr_ntoa_r((const ip6_addr_t*)&(addr), buf, buflen)

#endif /* LWIP_IPV6 */


#ifdef __cplusplus
}
#endif

#endif /* LWIP_HDR_INET_H */
