/*
 * 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_IP_ADDR_H__
#define __LWIP_IP_ADDR_H__

#include "opt.h"
#include "def.h"

#include "ip4_addr.h"
#include "ip6_addr.h"

#ifdef __cplusplus
extern "C" {
#endif

#if LWIP_IPV6
/* A union struct for both IP version's addresses. */
typedef union {
  ip_addr_t ip4;
  ip6_addr_t ip6;
} ipX_addr_t;

/** These functions only exist for type-safe conversion from ip_addr_t to
    ip6_addr_t and back */
#ifdef LWIP_ALLOW_STATIC_FN_IN_HEADER
static ip_addr_t* ip_2_ip4(ip_addr_t *ipaddr)
{ return (ip_addr_t*)ipaddr;}
static ip6_addr_t* ip_2_ip6(ip_addr_t *ipaddr)
{ return (ip6_addr_t*)ipaddr;}
static ip_addr_t* ip6_2_ip(ip6_addr_t *ip6addr)
{ return (ip_addr_t*)ip6addr; }
static ipX_addr_t* ip_2_ipX(ip_addr_t *ipaddr)
{ return (ipX_addr_t*)ipaddr; }
static ipX_addr_t* ip6_2_ipX(ip6_addr_t *ip6addr)
{ return (ipX_addr_t*)ip6addr; }
#else /* LWIP_ALLOW_STATIC_FN_IN_HEADER */
#define ip_2_ip4(ipaddr)   ((ip_addr_t*)(ipaddr))
#define ip_2_ip6(ipaddr)   ((ip6_addr_t*)(ipaddr))
#define ip6_2_ip(ip6addr)  ((ip_addr_t*)(ip6addr))
#define ip_2_ipX(ipaddr)   ((ipX_addr_t*)ipaddr)
#define ip6_2_ipX(ip6addr) ((ipX_addr_t*)ip6addr)
#endif /* LWIP_ALLOW_STATIC_FN_IN_HEADER*/
#define ipX_2_ip6(ip6addr) (&((ip6addr)->ip6))
#define ipX_2_ip(ipaddr)   (&((ipaddr)->ip4))
#define IP_IS_V4(ipaddr)  (((((ip6_addr_t*)ipaddr)->addr[0] != 0) && \
                            (((ip6_addr_t*)ipaddr)->addr[1] == 0) && \
                            (((ip6_addr_t*)ipaddr)->addr[2] == 0) && \
                            (((ip6_addr_t*)ipaddr)->addr[3] == 0)))

#define ipX_addr_copy(is_ipv6, dest, src)      do{if(is_ipv6){ \
  ip6_addr_copy((dest).ip6, (src).ip6); }else{ \
  ip_addr_copy((dest).ip4, (src).ip4); }}while(0)
#define ipX_addr_set(is_ipv6, dest, src) do{if(is_ipv6){ \
  ip6_addr_set(ipX_2_ip6(dest), ipX_2_ip6(src)); }else{ \
  ip_addr_set(ipX_2_ip(dest), ipX_2_ip(src)); }}while(0)
#define ipX_addr_set_ipaddr(is_ipv6, dest, src) do{if(is_ipv6){ \
  ip6_addr_set(ipX_2_ip6(dest), ip_2_ip6(src)); }else{ \
  ip_addr_set(ipX_2_ip(dest), src); }}while(0)
#define ipX_addr_set_zero(is_ipv6, ipaddr)     do{if(is_ipv6){ \
  ip6_addr_set_zero(ipX_2_ip6(ipaddr)); }else{ \
  ip_addr_set_zero(ipX_2_ip(ipaddr)); }}while(0)
#define ipX_addr_set_any(is_ipv6, ipaddr)      do{if(is_ipv6){ \
  ip6_addr_set_any(ipX_2_ip6(ipaddr)); }else{ \
  ip_addr_set_any(ipX_2_ip(ipaddr)); }}while(0)
#define ipX_addr_set_loopback(is_ipv6, ipaddr) do{if(is_ipv6){ \
  ip6_addr_set_loopback(ipX_2_ip6(ipaddr)); }else{ \
  ip_addr_set_loopback(ipX_2_ip(ipaddr)); }}while(0)
#define ipX_addr_set_hton(is_ipv6, dest, src)  do{if(is_ipv6){ \
  ip6_addr_set_hton(ipX_2_ip6(ipaddr), (src)) ;}else{ \
  ip_addr_set_hton(ipX_2_ip(ipaddr), (src));}}while(0)
#define ipX_addr_cmp(is_ipv6, addr1, addr2)    ((is_ipv6) ? \
  ip6_addr_cmp(ipX_2_ip6(addr1), ipX_2_ip6(addr2)) : \
  ip_addr_cmp(ipX_2_ip(addr1), ipX_2_ip(addr2)))
#define ipX_addr_cmp_netif(is_ipv6, addr1, netif) ((is_ipv6) ? \
  ip6_addr_cmp(ipX_2_ip6(addr1), ip6_netif_get_local_ip6(netif, ipX_2_ip6(addr1))) : \
  ip_addr_cmp(ipX_2_ip(addr1), ip_netif_get_local_ip(netif)))
#define ipX_addr_isany(is_ipv6, ipaddr)        ((is_ipv6) ? \
  ip6_addr_isany(ipX_2_ip6(ipaddr)) : \
  ip_addr_isany(ipX_2_ip(ipaddr)))
#define ipX_addr_ismulticast(is_ipv6, ipaddr)  ((is_ipv6) ? \
  ip6_addr_ismulticast(ipX_2_ip6(ipaddr)) : \
  ip_addr_ismulticast(ipX_2_ip(ipaddr)))

#define ipX_addr_debug_print(is_ipv6, debug, ipaddr) do { if(is_ipv6) { \
    LWIP_DEBUGF(debug, ("%x:%x:%x:%x:%x:%x:%x:%x", \
                      ipaddr != NULL ? IP6_ADDR_BLOCK1(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK2(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK3(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK4(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK5(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK6(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK7(ipX_2_ip6(ipaddr)) : 0,    \
                      ipaddr != NULL ? IP6_ADDR_BLOCK8(ipX_2_ip6(ipaddr)) : 0)); } else { \
    LWIP_DEBUGF(debug, ("%u.%u.%u.%u",             \
                      ipaddr != NULL ? ip4_addr1_16(ipX_2_ip(ipaddr)) : 0,       \
                      ipaddr != NULL ? ip4_addr2_16(ipX_2_ip(ipaddr)) : 0,       \
                      ipaddr != NULL ? ip4_addr3_16(ipX_2_ip(ipaddr)) : 0,       \
                      ipaddr != NULL ? ip4_addr4_16(ipX_2_ip(ipaddr)) : 0)); }}while(0)
#if 0
#define ipX_addr_debug_print(is_ipv6, debug, cat3, ipaddr) do { if(is_ipv6) { \
  ip6_addr_debug_print(debug, cat3, ipX_2_ip6(ipaddr)); } else { \
  ip_addr_debug_print(debug, cat3, ipX_2_ip(ipaddr)); }}while(0)
#endif

/*tag-201605251531, begin*/
#define ipX_srcaddr_islocal(is_ipv6, src)        ((is_ipv6) ? \
  ip6_srcaddr_islocal((src).ip6) : \
  ip_srcaddr_islocal((src).ip4))
/*tag-201605251531, end*/

/** @ingroup ipaddr */
#define ip4_2_ipv4_mapped_ipv6(ip6addr, ip4addr) do { \
  (ip6addr)->addr[3] = (ip4addr)->addr; \
  (ip6addr)->addr[2] = PP_HTONL(0x0000FFFFUL); \
  (ip6addr)->addr[1] = 0; \
  (ip6addr)->addr[0] = 0; \
  } while(0);

/** @ingroup ipaddr */
#define unmap_ipv4_mapped_ipv6(ip4addr, ip6addr) \
  (ip4addr)->addr = (ip6addr)->addr[3];

#else /* LWIP_IPV6 */

typedef ip_addr_t ipX_addr_t;
#define ipX_2_ip(ipaddr) (ipaddr)
#define ip_2_ipX(ipaddr) (ipaddr)

#define ipX_addr_copy(is_ipv6, dest, src)       ip_addr_copy(dest, src)
#define ipX_addr_set(is_ipv6, dest, src)        ip_addr_set(dest, src)
#define ipX_addr_set_ipaddr(is_ipv6, dest, src) ip_addr_set(dest, src)
#define ipX_addr_set_zero(is_ipv6, ipaddr)      ip_addr_set_zero(ipaddr)
#define ipX_addr_set_any(is_ipv6, ipaddr)       ip_addr_set_any(ipaddr)
#define ipX_addr_set_loopback(is_ipv6, ipaddr)  ip_addr_set_loopback(ipaddr)
#define ipX_addr_set_hton(is_ipv6, dest, src)   ip_addr_set_hton(dest, src)
#define ipX_addr_cmp(is_ipv6, addr1, addr2)     ip_addr_cmp(addr1, addr2)
#define ipX_addr_isany(is_ipv6, ipaddr)         ip_addr_isany(ipaddr)
#define ipX_addr_ismulticast(is_ipv6, ipaddr)   ip_addr_ismulticast(ipaddr)
#define ipX_addr_debug_print(is_ipv6, debug, ipaddr) ip_addr_debug_print(debug, ipaddr)

#endif /* LWIP_IPV6 */

#ifdef __cplusplus
}
#endif

#endif /* __LWIP_IP_ADDR_H__ */