FWGS
/
xash3d-fwgs
mirror of https://github.com/FWGS/xash3d-fwgs
2
0
Fork 0
Code Issues 2 Projects Releases Wiki Activity

engine: bring back simple netadr_t, as we don't care about IPv4-to-IPv6 mapped addresses anymore

This commit is contained in:
Alibek Omarov 2022-03-28 04:07:40 +03:00
parent bd1bfea695
commit b0a889d1a1
3 changed files with 53 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
common/netadr.h
View File

@ -50,20 +50,21 @@ typedef struct netadr_s
struct
{
uint32_t type;
uint8_t ip[4]; // or last 4 IPv6 octets
uint8_t ipx[10]; // or first 10 IPv6 octets
};
struct
{
#if XASH_LITTLE_ENDIAN
uint16_t type6;
uint8_t ip6_10[2]; // or 10-th two IPv6 octets
uint8_t ip6[16];
#elif XASH_BIG_ENDIAN
uint8_t ip6_10[2]; // or 10-th two IPv6 octets
uint8_t ip6_0[2];
uint16_t type6;
uint8_t ip6_2[14];
#endif
};
};
uint8_t ip[4]; // or last 4 IPv6 octets
uint8_t ipx[10]; // or first 10 IPv6 octets
uint16_t port;
} netadr_t;
#pragma pack( pop )

66
engine/common/net_ws.c
View File

@ -206,18 +206,36 @@ _inline qboolean NET_IsSocketValid( int socket )
#endif
}
_inline void NET_NetadrToIP6Bytes( uint8_t *ip6, const netadr_t *adr )
void NET_NetadrToIP6Bytes( uint8_t *ip6, const netadr_t *adr )
{
memcpy( ip6, adr->ipx, 10 );
memcpy( ip6 + 10, adr->ip6_10, 2 );
memcpy( ip6 + 12, adr->ip, 4 );
#if XASH_LITTLE_ENDIAN
memcpy( ip6, adr->ip6, sizeof( adr->ip6 ));
#elif XASH_BIG_ENDIAN
memcpy( ip6, adr->ip6_0, sizeof( adr->ip6_0 ));
memcpy( ip6 + sizeof( adr->ip6_0 ), adr->ip6_2, sizeof( adr->ip6_2 ));
#endif
}
_inline void NET_IP6BytesToNetadr( netadr_t *adr, const uint8_t *ip6 )
void NET_IP6BytesToNetadr( netadr_t *adr, const uint8_t *ip6 )
{
memcpy( adr->ipx, ip6, 10 );
memcpy( adr->ip6_10, ip6 + 10, 2 );
memcpy( adr->ip, ip6 + 12, 4 );
#if XASH_LITTLE_ENDIAN
memcpy( adr->ip6, ip6, sizeof( adr->ip6 ) );
#elif XASH_BIG_ENDIAN
memcpy( adr->ip6_0, ip6, sizeof( adr->ip6_0 ));
memcpy( adr->ip6_2, ip6 + sizeof( adr->ip6_0 ), sizeof( adr->ip6_2 ));
#endif
}
_inline int NET_NetadrIP6Compare( const netadr_t *a, const netadr_t *b )
{
#if XASH_LITTLE_ENDIAN
return memcmp( a->ip6, b->ip6, sizeof( a->ip6 ));
#elif XASH_BIG_ENDIAN
int ret = memcmp( a->ip6_0, b->ip6_0, sizeof( a->ip6_0 ));
if( !ret )
return memcmp( a->ip6_2, b->ip6_2, sizeof( a->ip6_2 ));
return ret;
#endif
}
/*
@ -235,17 +253,30 @@ static void NET_NetadrToSockadr( netadr_t *a, struct sockaddr_storage *s )
((struct sockaddr_in *)s)->sin_port = a->port;
((struct sockaddr_in *)s)->sin_addr.s_addr = INADDR_BROADCAST;
}
else if( a->type == NA_IP || a->type == (0xffff0000 | NA_IP6) )
else if( a->type == NA_IP )
{
((struct sockaddr_in *)s)->sin_family = AF_INET;
((struct sockaddr_in *)s)->sin_addr.s_addr = *(int *)&a->ip;
((struct sockaddr_in *)s)->sin_addr.s_addr = *(uint32_t *)&a->ip;
((struct sockaddr_in *)s)->sin_port = a->port;
}
else if( a->type6 == NA_IP6 )
{
((struct sockaddr_in6 *)s)->sin6_family = AF_INET6;
NET_NetadrToIP6Bytes(((struct sockaddr_in6 *)s)->sin6_addr.s6_addr, a );
((struct sockaddr_in6 *)s)->sin6_port = a->port;
struct in6_addr ip6;
NET_NetadrToIP6Bytes( ip6.s6_addr, a );
if( IN6_IS_ADDR_V4MAPPED( &ip6 ))
{
((struct sockaddr_in *)s)->sin_family = AF_INET;
((struct sockaddr_in *)s)->sin_addr.s_addr = *(uint32_t *)(ip6.s6_addr + 12);
((struct sockaddr_in *)s)->sin_port = a->port;
}
else
{
((struct sockaddr_in6 *)s)->sin6_family = AF_INET6;
memcpy( &((struct sockaddr_in6 *)s)->sin6_addr, &ip6, sizeof( struct in6_addr ));
((struct sockaddr_in6 *)s)->sin6_port = a->port;
}
}
else if( a->type6 == NA_MULTICAST_IP6 )
{
@ -618,9 +649,7 @@ qboolean NET_CompareBaseAdr( const netadr_t a, const netadr_t b )
if( a.type6 == NA_IP6 )
{
if( !memcmp( a.ip, b.ip, 4 ) &&
!memcmp( a.ip6_10, b.ip6_10, 2 ) &&
!memcmp( a.ipx, b.ipx, 10 ))
if( !NET_NetadrIP6Compare( &a, &b ))
return true;
}
@ -725,10 +754,7 @@ qboolean NET_CompareAdr( const netadr_t a, const netadr_t b )
if( a.type6 == NA_IP6 )
{
if( !memcmp( a.ip, b.ip, 4 ) &&
!memcmp( a.ip6_10, b.ip6_10, 2 ) &&
!memcmp( a.ipx, b.ipx, 10 ) &&
a.port == b.port )
if( a.port == b.port && !NET_NetadrIP6Compare( &a, &b ))
return true;
}

2
engine/common/net_ws.h
View File

@ -67,6 +67,8 @@ qboolean NET_BufferToBufferDecompress( byte *dest, uint *destLen, byte *source,
void NET_SendPacket( netsrc_t sock, size_t length, const void *data, netadr_t to );
void NET_SendPacketEx( netsrc_t sock, size_t length, const void *data, netadr_t to, size_t splitsize );
void NET_ClearLagData( qboolean bClient, qboolean bServer );
void NET_IP6BytesToNetadr( netadr_t *adr, const uint8_t *ip6 );
void NET_NetadrToIP6Bytes( uint8_t *ip6, const netadr_t *adr );
#if !XASH_DEDICATED
qboolean CL_LegacyMode( void );