115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
/*
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Copyright (C) 1997-2001 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef NET_ADR_H
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#define NET_ADR_H
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#include STDINT_H
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// net.h -- quake's interface to the networking layer
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// a1ba: copied from Quake-2/qcommon/qcommon.h and modified to support IPv6
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#define PORT_ANY -1
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typedef enum netadrtype_e
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{
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NA_UNDEFINED = 0,
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NA_LOOPBACK,
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NA_BROADCAST,
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NA_IP,
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NA_IPX,
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NA_BROADCAST_IPX,
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NA_IP6,
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NA_MULTICAST_IP6
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} netadrtype_t;
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/*
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Original Quake-2 structure:
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typedef struct
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{
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netadrtype_t type;
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byte ip[4];
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byte ipx[10];
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unsigned short port;
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} netadr_t;
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*/
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#pragma pack( push, 1 )
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typedef struct netadr_s
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{
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// the reason we do this evil thing, is that when this struct contains IPv6
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// address the `type` is 2-byte wide, but when it doesn't `type` must 4-byte
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// wide _and_ ip6_0 must be zeroed, to keep it binary compatible.
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#if XASH_LITTLE_ENDIAN
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uint16_t type;
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uint8_t ip6_0[2];
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#elif XASH_BIG_ENDIAN
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uint8_t ip6_0[2];
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uint16_t type;
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#else
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#error
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#endif
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union
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{
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// IPv6 struct
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uint8_t ip6_1[14];
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struct
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{
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union
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{
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uint8_t ip[4];
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uint32_t ip4; // for easier conversions
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};
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uint8_t ipx[10];
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};
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};
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uint16_t port;
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} netadr_t;
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#pragma pack( pop )
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static inline netadrtype_t NET_NetadrType( const netadr_t *a )
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{
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if( a->type == NA_IP6 || a->type == NA_MULTICAST_IP6 )
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return (netadrtype_t)a->type;
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if( a->ip6_0[0] || a->ip6_0[1] )
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return NA_UNDEFINED;
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return (netadrtype_t)a->type;
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}
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static inline void NET_NetadrSetType( netadr_t *a, netadrtype_t type )
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{
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if( type == NA_IP6 || type == NA_MULTICAST_IP6 )
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{
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a->type = type;
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return;
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}
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a->ip6_0[0] = a->ip6_0[1] = 0;
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a->type = type;
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}
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STATIC_CHECK_SIZEOF( netadr_t, 20, 20 );
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#endif // NET_ADR_H
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