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doom3-bfg/neo/sys/win32/win_net.cpp

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/*
===========================================================================
Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#pragma hdrstop
#include "../../idlib/precompiled.h"
/*
================================================================================================
Contains the NetworkSystem implementation specific to Win32.
================================================================================================
*/
#include <iptypes.h>
#include <iphlpapi.h>
static WSADATA winsockdata;
static bool winsockInitialized = false;
static bool usingSocks = false;
//lint -e569 ioctl macros trigger this
// force these libs to be included, so users of idLib don't need to add them to every project
#pragma comment(lib, "iphlpapi.lib" )
#pragma comment(lib, "wsock32.lib" )
/*
================================================================================================
Network CVars
================================================================================================
*/
idCVar net_socksServer( "net_socksServer", "", CVAR_ARCHIVE, "" );
idCVar net_socksPort( "net_socksPort", "1080", CVAR_ARCHIVE | CVAR_INTEGER, "" );
idCVar net_socksUsername( "net_socksUsername", "", CVAR_ARCHIVE, "" );
idCVar net_socksPassword( "net_socksPassword", "", CVAR_ARCHIVE, "" );
idCVar net_ip( "net_ip", "localhost", 0, "local IP address" );
static struct sockaddr_in socksRelayAddr;
static SOCKET ip_socket;
static SOCKET socks_socket;
static char socksBuf[4096];
typedef struct
{
unsigned long ip;
unsigned long mask;
char addr[16];
} net_interface;
#define MAX_INTERFACES 32
int num_interfaces = 0;
net_interface netint[MAX_INTERFACES];
/*
================================================================================================
Free Functions
================================================================================================
*/
/*
========================
NET_ErrorString
========================
*/
char* NET_ErrorString()
{
int code;
code = WSAGetLastError();
switch( code )
{
case WSAEINTR:
return "WSAEINTR";
case WSAEBADF:
return "WSAEBADF";
case WSAEACCES:
return "WSAEACCES";
case WSAEDISCON:
return "WSAEDISCON";
case WSAEFAULT:
return "WSAEFAULT";
case WSAEINVAL:
return "WSAEINVAL";
case WSAEMFILE:
return "WSAEMFILE";
case WSAEWOULDBLOCK:
return "WSAEWOULDBLOCK";
case WSAEINPROGRESS:
return "WSAEINPROGRESS";
case WSAEALREADY:
return "WSAEALREADY";
case WSAENOTSOCK:
return "WSAENOTSOCK";
case WSAEDESTADDRREQ:
return "WSAEDESTADDRREQ";
case WSAEMSGSIZE:
return "WSAEMSGSIZE";
case WSAEPROTOTYPE:
return "WSAEPROTOTYPE";
case WSAENOPROTOOPT:
return "WSAENOPROTOOPT";
case WSAEPROTONOSUPPORT:
return "WSAEPROTONOSUPPORT";
case WSAESOCKTNOSUPPORT:
return "WSAESOCKTNOSUPPORT";
case WSAEOPNOTSUPP:
return "WSAEOPNOTSUPP";
case WSAEPFNOSUPPORT:
return "WSAEPFNOSUPPORT";
case WSAEAFNOSUPPORT:
return "WSAEAFNOSUPPORT";
case WSAEADDRINUSE:
return "WSAEADDRINUSE";
case WSAEADDRNOTAVAIL:
return "WSAEADDRNOTAVAIL";
case WSAENETDOWN:
return "WSAENETDOWN";
case WSAENETUNREACH:
return "WSAENETUNREACH";
case WSAENETRESET:
return "WSAENETRESET";
case WSAECONNABORTED:
return "WSAECONNABORTED";
case WSAECONNRESET:
return "WSAECONNRESET";
case WSAENOBUFS:
return "WSAENOBUFS";
case WSAEISCONN:
return "WSAEISCONN";
case WSAENOTCONN:
return "WSAENOTCONN";
case WSAESHUTDOWN:
return "WSAESHUTDOWN";
case WSAETOOMANYREFS:
return "WSAETOOMANYREFS";
case WSAETIMEDOUT:
return "WSAETIMEDOUT";
case WSAECONNREFUSED:
return "WSAECONNREFUSED";
case WSAELOOP:
return "WSAELOOP";
case WSAENAMETOOLONG:
return "WSAENAMETOOLONG";
case WSAEHOSTDOWN:
return "WSAEHOSTDOWN";
case WSASYSNOTREADY:
return "WSASYSNOTREADY";
case WSAVERNOTSUPPORTED:
return "WSAVERNOTSUPPORTED";
case WSANOTINITIALISED:
return "WSANOTINITIALISED";
case WSAHOST_NOT_FOUND:
return "WSAHOST_NOT_FOUND";
case WSATRY_AGAIN:
return "WSATRY_AGAIN";
case WSANO_RECOVERY:
return "WSANO_RECOVERY";
case WSANO_DATA:
return "WSANO_DATA";
default:
return "NO ERROR";
}
}
/*
========================
Net_NetadrToSockadr
========================
*/
void Net_NetadrToSockadr( const netadr_t* a, sockaddr_in* s )
{
memset( s, 0, sizeof( *s ) );
if( a->type == NA_BROADCAST )
{
s->sin_family = AF_INET;
s->sin_addr.s_addr = INADDR_BROADCAST;
}
else if( a->type == NA_IP || a->type == NA_LOOPBACK )
{
s->sin_family = AF_INET;
s->sin_addr.s_addr = *( int* )a->ip;
}
s->sin_port = htons( ( short )a->port );
}
/*
========================
Net_SockadrToNetadr
========================
*/
void Net_SockadrToNetadr( sockaddr_in* s, netadr_t* a )
{
unsigned int ip;
if( s->sin_family == AF_INET )
{
ip = s->sin_addr.s_addr;
*( unsigned int* )a->ip = ip;
a->port = htons( s->sin_port );
// we store in network order, that loopback test is host order..
ip = ntohl( ip );
if( ip == INADDR_LOOPBACK )
{
a->type = NA_LOOPBACK;
}
else
{
a->type = NA_IP;
}
}
}
/*
========================
Net_ExtractPort
========================
*/
static bool Net_ExtractPort( const char* src, char* buf, int bufsize, int* port )
{
char* p;
strncpy( buf, src, bufsize );
p = buf;
p += Min( bufsize - 1, idStr::Length( src ) );
*p = '\0';
p = strchr( buf, ':' );
if( !p )
{
return false;
}
*p = '\0';
*port = strtol( p + 1, NULL, 10 );
if( errno == ERANGE )
{
return false;
}
return true;
}
/*
========================
Net_StringToSockaddr
========================
*/
static bool Net_StringToSockaddr( const char* s, sockaddr_in* sadr, bool doDNSResolve )
{
struct hostent* h;
char buf[256];
int port;
memset( sadr, 0, sizeof( *sadr ) );
sadr->sin_family = AF_INET;
sadr->sin_port = 0;
if( s[0] >= '0' && s[0] <= '9' )
{
unsigned long ret = inet_addr( s );
if( ret != INADDR_NONE )
{
*( int* )&sadr->sin_addr = ret;
}
else
{
// check for port
if( !Net_ExtractPort( s, buf, sizeof( buf ), &port ) )
{
return false;
}
ret = inet_addr( buf );
if( ret == INADDR_NONE )
{
return false;
}
*( int* )&sadr->sin_addr = ret;
sadr->sin_port = htons( port );
}
}
else if( doDNSResolve )
{
// try to remove the port first, otherwise the DNS gets confused into multiple timeouts
// failed or not failed, buf is expected to contain the appropriate host to resolve
if( Net_ExtractPort( s, buf, sizeof( buf ), &port ) )
{
sadr->sin_port = htons( port );
}
h = gethostbyname( buf );
if( h == 0 )
{
return false;
}
*( int* )&sadr->sin_addr = *( int* )h->h_addr_list[0];
}
return true;
}
/*
========================
NET_IPSocket
========================
*/
int NET_IPSocket( const char* net_interface, int port, netadr_t* bound_to )
{
SOCKET newsocket;
sockaddr_in address;
unsigned long _true = 1;
int i = 1;
int err;
if( port != PORT_ANY )
{
if( net_interface )
{
idLib::Printf( "Opening IP socket: %s:%i\n", net_interface, port );
}
else
{
idLib::Printf( "Opening IP socket: localhost:%i\n", port );
}
}
if( ( newsocket = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET )
{
err = WSAGetLastError();
if( err != WSAEAFNOSUPPORT )
{
idLib::Printf( "WARNING: UDP_OpenSocket: socket: %s\n", NET_ErrorString() );
}
return 0;
}
// make it non-blocking
if( ioctlsocket( newsocket, FIONBIO, &_true ) == SOCKET_ERROR )
{
idLib::Printf( "WARNING: UDP_OpenSocket: ioctl FIONBIO: %s\n", NET_ErrorString() );
closesocket( newsocket );
return 0;
}
// make it broadcast capable
if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, ( char* )&i, sizeof( i ) ) == SOCKET_ERROR )
{
idLib::Printf( "WARNING: UDP_OpenSocket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() );
closesocket( newsocket );
return 0;
}
if( !net_interface || !net_interface[0] || !idStr::Icmp( net_interface, "localhost" ) )
{
address.sin_addr.s_addr = INADDR_ANY;
}
else
{
Net_StringToSockaddr( net_interface, &address, true );
}
if( port == PORT_ANY )
{
address.sin_port = 0;
}
else
{
address.sin_port = htons( ( short )port );
}
address.sin_family = AF_INET;
if( bind( newsocket, ( const sockaddr* )&address, sizeof( address ) ) == SOCKET_ERROR )
{
idLib::Printf( "WARNING: UDP_OpenSocket: bind: %s\n", NET_ErrorString() );
closesocket( newsocket );
return 0;
}
// if the port was PORT_ANY, we need to query again to know the real port we got bound to
// ( this used to be in idUDP::InitForPort )
if( bound_to )
{
int len = sizeof( address );
getsockname( newsocket, ( sockaddr* )&address, &len );
Net_SockadrToNetadr( &address, bound_to );
}
return newsocket;
}
/*
========================
NET_OpenSocks
========================
*/
void NET_OpenSocks( int port )
{
sockaddr_in address;
struct hostent* h;
int len;
bool rfc1929;
unsigned char buf[64];
usingSocks = false;
idLib::Printf( "Opening connection to SOCKS server.\n" );
if( ( socks_socket = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP ) ) == INVALID_SOCKET )
{
idLib::Printf( "WARNING: NET_OpenSocks: socket: %s\n", NET_ErrorString() );
return;
}
h = gethostbyname( net_socksServer.GetString() );
if( h == NULL )
{
idLib::Printf( "WARNING: NET_OpenSocks: gethostbyname: %s\n", NET_ErrorString() );
return;
}
if( h->h_addrtype != AF_INET )
{
idLib::Printf( "WARNING: NET_OpenSocks: gethostbyname: address type was not AF_INET\n" );
return;
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = *( int* )h->h_addr_list[0];
address.sin_port = htons( ( short )net_socksPort.GetInteger() );
if( connect( socks_socket, ( sockaddr* )&address, sizeof( address ) ) == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: connect: %s\n", NET_ErrorString() );
return;
}
// send socks authentication handshake
if( *net_socksUsername.GetString() || *net_socksPassword.GetString() )
{
rfc1929 = true;
}
else
{
rfc1929 = false;
}
buf[0] = 5; // SOCKS version
// method count
if( rfc1929 )
{
buf[1] = 2;
len = 4;
}
else
{
buf[1] = 1;
len = 3;
}
buf[2] = 0; // method #1 - method id #00: no authentication
if( rfc1929 )
{
buf[2] = 2; // method #2 - method id #02: username/password
}
if( send( socks_socket, ( const char* )buf, len, 0 ) == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, ( char* )buf, 64, 0 );
if( len == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if( len != 2 || buf[0] != 5 )
{
idLib::Printf( "NET_OpenSocks: bad response\n" );
return;
}
switch( buf[1] )
{
case 0: // no authentication
break;
case 2: // username/password authentication
break;
default:
idLib::Printf( "NET_OpenSocks: request denied\n" );
return;
}
// do username/password authentication if needed
if( buf[1] == 2 )
{
int ulen;
int plen;
// build the request
ulen = idStr::Length( net_socksUsername.GetString() );
plen = idStr::Length( net_socksPassword.GetString() );
buf[0] = 1; // username/password authentication version
buf[1] = ulen;
if( ulen )
{
memcpy( &buf[2], net_socksUsername.GetString(), ulen );
}
buf[2 + ulen] = plen;
if( plen )
{
memcpy( &buf[3 + ulen], net_socksPassword.GetString(), plen );
}
// send it
if( send( socks_socket, ( const char* )buf, 3 + ulen + plen, 0 ) == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, ( char* )buf, 64, 0 );
if( len == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if( len != 2 || buf[0] != 1 )
{
idLib::Printf( "NET_OpenSocks: bad response\n" );
return;
}
if( buf[1] != 0 )
{
idLib::Printf( "NET_OpenSocks: authentication failed\n" );
return;
}
}
// send the UDP associate request
buf[0] = 5; // SOCKS version
buf[1] = 3; // command: UDP associate
buf[2] = 0; // reserved
buf[3] = 1; // address type: IPV4
*( int* )&buf[4] = INADDR_ANY;
*( short* )&buf[8] = htons( ( short )port ); // port
if( send( socks_socket, ( const char* )buf, 10, 0 ) == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, ( char* )buf, 64, 0 );
if( len == SOCKET_ERROR )
{
idLib::Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if( len < 2 || buf[0] != 5 )
{
idLib::Printf( "NET_OpenSocks: bad response\n" );
return;
}
// check completion code
if( buf[1] != 0 )
{
idLib::Printf( "NET_OpenSocks: request denied: %i\n", buf[1] );
return;
}
if( buf[3] != 1 )
{
idLib::Printf( "NET_OpenSocks: relay address is not IPV4: %i\n", buf[3] );
return;
}
socksRelayAddr.sin_family = AF_INET;
socksRelayAddr.sin_addr.s_addr = *( int* )&buf[4];
socksRelayAddr.sin_port = *( short* )&buf[8];
memset( socksRelayAddr.sin_zero, 0, sizeof( socksRelayAddr.sin_zero ) );
usingSocks = true;
}
/*
========================
Net_WaitForData
========================
*/
bool Net_WaitForData( int netSocket, int timeout )
{
int ret;
fd_set set;
struct timeval tv;
if( !netSocket )
{
return false;
}
if( timeout < 0 )
{
return true;
}
FD_ZERO( &set );
FD_SET( static_cast<unsigned int>( netSocket ), &set );
tv.tv_sec = 0;
tv.tv_usec = timeout * 1000;
ret = select( netSocket + 1, &set, NULL, NULL, &tv );
if( ret == -1 )
{
idLib::Printf( "Net_WaitForData select(): %s\n", strerror( errno ) );
return false;
}
// timeout with no data
if( ret == 0 )
{
return false;
}
return true;
}
/*
========================
Net_GetUDPPacket
========================
*/
bool Net_GetUDPPacket( int netSocket, netadr_t& net_from, char* data, int& size, int maxSize )
{
int ret;
sockaddr_in from;
int fromlen;
int err;
if( !netSocket )
{
return false;
}
fromlen = sizeof( from );
ret = recvfrom( netSocket, data, maxSize, 0, ( sockaddr* )&from, &fromlen );
if( ret == SOCKET_ERROR )
{
err = WSAGetLastError();
if( err == WSAEWOULDBLOCK || err == WSAECONNRESET )
{
return false;
}
char buf[1024];
sprintf( buf, "Net_GetUDPPacket: %s\n", NET_ErrorString() );
idLib::Printf( buf );
return false;
}
if( static_cast<unsigned int>( netSocket ) == ip_socket )
{
memset( from.sin_zero, 0, sizeof( from.sin_zero ) );
}
if( usingSocks && static_cast<unsigned int>( netSocket ) == ip_socket && memcmp( &from, &socksRelayAddr, fromlen ) == 0 )
{
if( ret < 10 || data[0] != 0 || data[1] != 0 || data[2] != 0 || data[3] != 1 )
{
return false;
}
net_from.type = NA_IP;
net_from.ip[0] = data[4];
net_from.ip[1] = data[5];
net_from.ip[2] = data[6];
net_from.ip[3] = data[7];
net_from.port = *( short* )&data[8];
memmove( data, &data[10], ret - 10 );
}
else
{
Net_SockadrToNetadr( &from, &net_from );
}
if( ret > maxSize )
{
char buf[1024];
sprintf( buf, "Net_GetUDPPacket: oversize packet from %s\n", Sys_NetAdrToString( net_from ) );
idLib::Printf( buf );
return false;
}
size = ret;
return true;
}
/*
========================
Net_SendUDPPacket
========================
*/
void Net_SendUDPPacket( int netSocket, int length, const void* data, const netadr_t to )
{
int ret;
sockaddr_in addr;
if( !netSocket )
{
return;
}
Net_NetadrToSockadr( &to, &addr );
if( usingSocks && to.type == NA_IP )
{
socksBuf[0] = 0; // reserved
socksBuf[1] = 0;
socksBuf[2] = 0; // fragment (not fragmented)
socksBuf[3] = 1; // address type: IPV4
*( int* )&socksBuf[4] = addr.sin_addr.s_addr;
*( short* )&socksBuf[8] = addr.sin_port;
memcpy( &socksBuf[10], data, length );
ret = sendto( netSocket, socksBuf, length + 10, 0, ( sockaddr* )&socksRelayAddr, sizeof( socksRelayAddr ) );
}
else
{
ret = sendto( netSocket, ( const char* )data, length, 0, ( sockaddr* )&addr, sizeof( addr ) );
}
if( ret == SOCKET_ERROR )
{
int err = WSAGetLastError();
// some PPP links do not allow broadcasts and return an error
if( ( err == WSAEADDRNOTAVAIL ) && ( to.type == NA_BROADCAST ) )
{
return;
}
// NOTE: WSAEWOULDBLOCK used to be silently ignored,
// but that means the packet will be dropped so I don't feel it's a good thing to ignore
idLib::Printf( "UDP sendto error - packet dropped: %s\n", NET_ErrorString() );
}
}
/*
========================
Sys_InitNetworking
========================
*/
void Sys_InitNetworking()
{
int r;
if( winsockInitialized )
{
return;
}
r = WSAStartup( MAKEWORD( 1, 1 ), &winsockdata );
if( r )
{
idLib::Printf( "WARNING: Winsock initialization failed, returned %d\n", r );
return;
}
winsockInitialized = true;
idLib::Printf( "Winsock Initialized\n" );
PIP_ADAPTER_INFO pAdapterInfo;
PIP_ADAPTER_INFO pAdapter = NULL;
DWORD dwRetVal = 0;
PIP_ADDR_STRING pIPAddrString;
ULONG ulOutBufLen;
bool foundloopback;
num_interfaces = 0;
foundloopback = false;
pAdapterInfo = ( IP_ADAPTER_INFO* )malloc( sizeof( IP_ADAPTER_INFO ) );
if( !pAdapterInfo )
{
idLib::FatalError( "Sys_InitNetworking: Couldn't malloc( %d )", sizeof( IP_ADAPTER_INFO ) );
}
ulOutBufLen = sizeof( IP_ADAPTER_INFO );
// Make an initial call to GetAdaptersInfo to get
// the necessary size into the ulOutBufLen variable
if( GetAdaptersInfo( pAdapterInfo, &ulOutBufLen ) == ERROR_BUFFER_OVERFLOW )
{
free( pAdapterInfo );
pAdapterInfo = ( IP_ADAPTER_INFO* )malloc( ulOutBufLen );
if( !pAdapterInfo )
{
idLib::FatalError( "Sys_InitNetworking: Couldn't malloc( %ld )", ulOutBufLen );
}
}
if( ( dwRetVal = GetAdaptersInfo( pAdapterInfo, &ulOutBufLen ) ) != NO_ERROR )
{
// happens if you have no network connection
idLib::Printf( "Sys_InitNetworking: GetAdaptersInfo failed (%ld).\n", dwRetVal );
}
else
{
pAdapter = pAdapterInfo;
while( pAdapter )
{
idLib::Printf( "Found interface: %s %s - ", pAdapter->AdapterName, pAdapter->Description );
pIPAddrString = &pAdapter->IpAddressList;
while( pIPAddrString )
{
unsigned long ip_a, ip_m;
if( !idStr::Icmp( "127.0.0.1", pIPAddrString->IpAddress.String ) )
{
foundloopback = true;
}
ip_a = ntohl( inet_addr( pIPAddrString->IpAddress.String ) );
ip_m = ntohl( inet_addr( pIPAddrString->IpMask.String ) );
//skip null netmasks
if( !ip_m )
{
idLib::Printf( "%s NULL netmask - skipped\n", pIPAddrString->IpAddress.String );
pIPAddrString = pIPAddrString->Next;
continue;
}
idLib::Printf( "%s/%s\n", pIPAddrString->IpAddress.String, pIPAddrString->IpMask.String );
netint[num_interfaces].ip = ip_a;
netint[num_interfaces].mask = ip_m;
idStr::Copynz( netint[num_interfaces].addr, pIPAddrString->IpAddress.String, sizeof( netint[num_interfaces].addr ) );
num_interfaces++;
if( num_interfaces >= MAX_INTERFACES )
{
idLib::Printf( "Sys_InitNetworking: MAX_INTERFACES(%d) hit.\n", MAX_INTERFACES );
free( pAdapterInfo );
return;
}
pIPAddrString = pIPAddrString->Next;
}
pAdapter = pAdapter->Next;
}
}
// for some retarded reason, win32 doesn't count loopback as an adapter...
if( !foundloopback && num_interfaces < MAX_INTERFACES )
{
idLib::Printf( "Sys_InitNetworking: adding loopback interface\n" );
netint[num_interfaces].ip = ntohl( inet_addr( "127.0.0.1" ) );
netint[num_interfaces].mask = ntohl( inet_addr( "255.0.0.0" ) );
num_interfaces++;
}
free( pAdapterInfo );
}
/*
========================
Sys_ShutdownNetworking
========================
*/
void Sys_ShutdownNetworking()
{
if( !winsockInitialized )
{
return;
}
WSACleanup();
winsockInitialized = false;
}
/*
========================
Sys_StringToNetAdr
========================
*/
bool Sys_StringToNetAdr( const char* s, netadr_t* a, bool doDNSResolve )
{
sockaddr_in sadr;
if( !Net_StringToSockaddr( s, &sadr, doDNSResolve ) )
{
return false;
}
Net_SockadrToNetadr( &sadr, a );
return true;
}
/*
========================
Sys_NetAdrToString
========================
*/
const char* Sys_NetAdrToString( const netadr_t a )
{
static int index = 0;
static char buf[ 4 ][ 64 ]; // flip/flop
char* s;
s = buf[index];
index = ( index + 1 ) & 3;
if( a.type == NA_LOOPBACK )
{
if( a.port )
{
idStr::snPrintf( s, 64, "localhost:%i", a.port );
}
else
{
idStr::snPrintf( s, 64, "localhost" );
}
}
else if( a.type == NA_IP )
{
idStr::snPrintf( s, 64, "%i.%i.%i.%i:%i", a.ip[0], a.ip[1], a.ip[2], a.ip[3], a.port );
}
return s;
}
/*
========================
Sys_IsLANAddress
========================
*/
bool Sys_IsLANAddress( const netadr_t adr )
{
if( adr.type == NA_LOOPBACK )
{
return true;
}
if( adr.type != NA_IP )
{
return false;
}
if( num_interfaces )
{
int i;
unsigned long* p_ip;
unsigned long ip;
p_ip = ( unsigned long* )&adr.ip[0];
ip = ntohl( *p_ip );
for( i = 0; i < num_interfaces; i++ )
{
if( ( netint[i].ip & netint[i].mask ) == ( ip & netint[i].mask ) )
{
return true;
}
}
}
return false;
}
/*
========================
Sys_CompareNetAdrBase
Compares without the port.
========================
*/
bool Sys_CompareNetAdrBase( const netadr_t a, const netadr_t b )
{
if( a.type != b.type )
{
return false;
}
if( a.type == NA_LOOPBACK )
{
if( a.port == b.port )
{
return true;
}
return false;
}
if( a.type == NA_IP )
{
if( a.ip[0] == b.ip[0] && a.ip[1] == b.ip[1] && a.ip[2] == b.ip[2] && a.ip[3] == b.ip[3] )
{
return true;
}
return false;
}
idLib::Printf( "Sys_CompareNetAdrBase: bad address type\n" );
return false;
}
/*
========================
Sys_GetLocalIPCount
========================
*/
int Sys_GetLocalIPCount()
{
return num_interfaces;
}
/*
========================
Sys_GetLocalIP
========================
*/
const char* Sys_GetLocalIP( int i )
{
if( ( i < 0 ) || ( i >= num_interfaces ) )
{
return NULL;
}
return netint[i].addr;
}
/*
================================================================================================
idUDP
================================================================================================
*/
/*
========================
idUDP::idUDP
========================
*/
idUDP::idUDP()
{
netSocket = 0;
memset( &bound_to, 0, sizeof( bound_to ) );
silent = false;
packetsRead = 0;
bytesRead = 0;
packetsWritten = 0;
bytesWritten = 0;
}
/*
========================
idUDP::~idUDP
========================
*/
idUDP::~idUDP()
{
Close();
}
/*
========================
idUDP::InitForPort
========================
*/
bool idUDP::InitForPort( int portNumber )
{
netSocket = NET_IPSocket( net_ip.GetString(), portNumber, &bound_to );
if( netSocket <= 0 )
{
netSocket = 0;
memset( &bound_to, 0, sizeof( bound_to ) );
return false;
}
return true;
}
/*
========================
idUDP::Close
========================
*/
void idUDP::Close()
{
if( netSocket )
{
closesocket( netSocket );
netSocket = 0;
memset( &bound_to, 0, sizeof( bound_to ) );
}
}
/*
========================
idUDP::GetPacket
========================
*/
bool idUDP::GetPacket( netadr_t& from, void* data, int& size, int maxSize )
{
bool ret;
while( 1 )
{
ret = Net_GetUDPPacket( netSocket, from, ( char* )data, size, maxSize );
if( !ret )
{
break;
}
packetsRead++;
bytesRead += size;
break;
}
return ret;
}
/*
========================
idUDP::GetPacketBlocking
========================
*/
bool idUDP::GetPacketBlocking( netadr_t& from, void* data, int& size, int maxSize, int timeout )
{
if( !Net_WaitForData( netSocket, timeout ) )
{
return false;
}
if( GetPacket( from, data, size, maxSize ) )
{
return true;
}
return false;
}
/*
========================
idUDP::SendPacket
========================
*/
void idUDP::SendPacket( const netadr_t to, const void* data, int size )
{
if( to.type == NA_BAD )
{
idLib::Warning( "idUDP::SendPacket: bad address type NA_BAD - ignored" );
return;
}
packetsWritten++;
bytesWritten += size;
if( silent )
{
return;
}
Net_SendUDPPacket( netSocket, size, data, to );
}
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