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ioq3quest/code/qcommon/net_ip.c
Tony J. White = e46fe24426 * rewrite of the win32 dedicated console: 
1) NET_Sleep() no longer watches for input, Sys_Sleep() added for waiting
     on input.
  2) Added "CtrlHandler" for trapping Ctrl-C and other quit methods not
     handled by signals on windows
  3) Added history support
  4) Added tab completion
  5) Removed automatic cursor/scroll adjustment (too problematic)
  6) Enable mousewheel scrolling
  7) Stop using the InputBuffer for editing

  This seems to work pretty well now, but I jumped the gun on a previous
  commit message by saying you can scroll now without locking up your server.
  That was only true up until the point that a server tried to print to
  the console, at that point it will hang until you release the scroll bar :(
  It may be possible to get around this by using a seperate thread for
  console output, but that's a whole new can of worms.
2007-09-15 02:22:58 +00:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena 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 2 of the License,
or (at your option) any later version.
Quake III Arena 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "../qcommon/q_shared.h"
#include "../qcommon/qcommon.h"
#ifdef _WIN32
#include <winsock.h>
typedef int socklen_t;
#define EAGAIN WSAEWOULDBLOCK
#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#define ECONNRESET WSAECONNRESET
#define socketError WSAGetLastError( )
static WSADATA winsockdata;
static qboolean winsockInitialized = qfalse;
#else
#if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
// needed for socklen_t on OSX 10.2
# define _BSD_SOCKLEN_T_
#endif
#include <arpa/inet.h>
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef MACOS_X
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h> // for 'struct sockaddr_dl'
#endif
#ifdef __sun
#include <sys/filio.h>
#endif
typedef int SOCKET;
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
#define closesocket close
#define ioctlsocket ioctl
#define socketError errno
#endif
static qboolean usingSocks = qfalse;
static qboolean networkingEnabled = qfalse;
static cvar_t *net_noudp;
static cvar_t *net_socksEnabled;
static cvar_t *net_socksServer;
static cvar_t *net_socksPort;
static cvar_t *net_socksUsername;
static cvar_t *net_socksPassword;
static struct sockaddr socksRelayAddr;
static SOCKET ip_socket;
static SOCKET socks_socket;
#define MAX_IPS 16
static int numIP;
static byte localIP[MAX_IPS][4];
//=============================================================================
/*
====================
NET_ErrorString
====================
*/
char *NET_ErrorString( void ) {
#ifdef _WIN32
//FIXME: replace with FormatMessage?
switch( socketError ) {
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 "WSWSAECONNABORTEDAEINTR";
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";
}
#else
return strerror (errno);
#endif
}
static void NetadrToSockadr( netadr_t *a, struct sockaddr *s ) {
memset( s, 0, sizeof(*s) );
if( a->type == NA_BROADCAST ) {
((struct sockaddr_in *)s)->sin_family = AF_INET;
((struct sockaddr_in *)s)->sin_port = a->port;
((struct sockaddr_in *)s)->sin_addr.s_addr = INADDR_BROADCAST;
}
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_port = a->port;
}
}
static void SockadrToNetadr( struct sockaddr *s, netadr_t *a ) {
if (s->sa_family == AF_INET) {
a->type = NA_IP;
*(int *)&a->ip = ((struct sockaddr_in *)s)->sin_addr.s_addr;
a->port = ((struct sockaddr_in *)s)->sin_port;
}
}
/*
=============
Sys_StringToSockaddr
=============
*/
static qboolean Sys_StringToSockaddr( const char *s, struct sockaddr *sadr ) {
struct hostent *h;
memset( sadr, 0, sizeof( *sadr ) );
((struct sockaddr_in *)sadr)->sin_family = AF_INET;
((struct sockaddr_in *)sadr)->sin_port = 0;
if( s[0] >= '0' && s[0] <= '9' ) {
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = inet_addr(s);
} else {
if( ( h = gethostbyname( s ) ) == 0 ) {
return 0;
}
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = *(int *)h->h_addr_list[0];
}
return qtrue;
}
/*
=============
Sys_StringToAdr
=============
*/
qboolean Sys_StringToAdr( const char *s, netadr_t *a ) {
struct sockaddr sadr;
if ( !Sys_StringToSockaddr( s, &sadr ) ) {
return qfalse;
}
SockadrToNetadr( &sadr, a );
return qtrue;
}
//=============================================================================
/*
==================
Sys_GetPacket
Never called by the game logic, just the system event queing
==================
*/
#ifdef _DEBUG
int recvfromCount;
#endif
qboolean Sys_GetPacket( netadr_t *net_from, msg_t *net_message ) {
int ret;
struct sockaddr from;
socklen_t fromlen;
int err;
if( !ip_socket ) {
return qfalse;
}
fromlen = sizeof(from);
#ifdef _DEBUG
recvfromCount++; // performance check
#endif
ret = recvfrom( ip_socket, net_message->data, net_message->maxsize, 0, (struct sockaddr *)&from, &fromlen );
if (ret == SOCKET_ERROR)
{
err = socketError;
if( err == EAGAIN || err == ECONNRESET ) {
return qfalse;
}
Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() );
return qfalse;
}
memset( ((struct sockaddr_in *)&from)->sin_zero, 0, 8 );
if ( usingSocks && memcmp( &from, &socksRelayAddr, fromlen ) == 0 ) {
if ( ret < 10 || net_message->data[0] != 0 || net_message->data[1] != 0 || net_message->data[2] != 0 || net_message->data[3] != 1 ) {
return qfalse;
}
net_from->type = NA_IP;
net_from->ip[0] = net_message->data[4];
net_from->ip[1] = net_message->data[5];
net_from->ip[2] = net_message->data[6];
net_from->ip[3] = net_message->data[7];
net_from->port = *(short *)&net_message->data[8];
net_message->readcount = 10;
}
else {
SockadrToNetadr( &from, net_from );
net_message->readcount = 0;
}
if( ret == net_message->maxsize ) {
Com_Printf( "Oversize packet from %s\n", NET_AdrToString (*net_from) );
return qfalse;
}
net_message->cursize = ret;
return qtrue;
}
//=============================================================================
static char socksBuf[4096];
/*
==================
Sys_SendPacket
==================
*/
void Sys_SendPacket( int length, const void *data, netadr_t to ) {
int ret;
struct sockaddr addr;
if( to.type != NA_BROADCAST && to.type != NA_IP ) {
Com_Error( ERR_FATAL, "Sys_SendPacket: bad address type" );
return;
}
if( !ip_socket ) {
return;
}
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] = ((struct sockaddr_in *)&addr)->sin_addr.s_addr;
*(short *)&socksBuf[8] = ((struct sockaddr_in *)&addr)->sin_port;
memcpy( &socksBuf[10], data, length );
ret = sendto( ip_socket, socksBuf, length+10, 0, &socksRelayAddr, sizeof(socksRelayAddr) );
}
else {
ret = sendto( ip_socket, data, length, 0, &addr, sizeof(addr) );
}
if( ret == SOCKET_ERROR ) {
int err = socketError;
// wouldblock is silent
if( err == EAGAIN ) {
return;
}
// some PPP links do not allow broadcasts and return an error
if( ( err == EADDRNOTAVAIL ) && ( ( to.type == NA_BROADCAST ) ) ) {
return;
}
Com_Printf( "NET_SendPacket: %s\n", NET_ErrorString() );
}
}
//=============================================================================
/*
==================
Sys_IsLANAddress
LAN clients will have their rate var ignored
==================
*/
qboolean Sys_IsLANAddress( netadr_t adr ) {
int i;
if( adr.type == NA_LOOPBACK ) {
return qtrue;
}
if( adr.type != NA_IP ) {
return qfalse;
}
// RFC1918:
// 10.0.0.0 - 10.255.255.255 (10/8 prefix)
// 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
// 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
if(adr.ip[0] == 10)
return qtrue;
if(adr.ip[0] == 172 && (adr.ip[1]&0xf0) == 16)
return qtrue;
if(adr.ip[0] == 192 && adr.ip[1] == 168)
return qtrue;
// choose which comparison to use based on the class of the address being tested
// any local adresses of a different class than the address being tested will fail based on the first byte
// FIXME tma 28/08/07 Try and make this work for arbitrary subnet masks somehow
if( adr.ip[0] == 127 && adr.ip[1] == 0 && adr.ip[2] == 0 && adr.ip[3] == 1 ) {
return qtrue;
}
// Class A
if( (adr.ip[0] & 0x80) == 0x00 ) {
for ( i = 0 ; i < numIP ; i++ ) {
if( adr.ip[0] == localIP[i][0] ) {
return qtrue;
}
}
return qfalse;
}
// Class B
if( (adr.ip[0] & 0xc0) == 0x80 ) {
for ( i = 0 ; i < numIP ; i++ ) {
if( adr.ip[0] == localIP[i][0] && adr.ip[1] == localIP[i][1] ) {
return qtrue;
}
}
return qfalse;
}
// Class C
for ( i = 0 ; i < numIP ; i++ ) {
if( adr.ip[0] == localIP[i][0] && adr.ip[1] == localIP[i][1] && adr.ip[2] == localIP[i][2] ) {
return qtrue;
}
}
return qfalse;
}
/*
==================
Sys_ShowIP
==================
*/
void Sys_ShowIP(void) {
int i;
for (i = 0; i < numIP; i++) {
Com_Printf( "IP: %i.%i.%i.%i\n", localIP[i][0], localIP[i][1], localIP[i][2], localIP[i][3] );
}
}
//=============================================================================
/*
====================
NET_IPSocket
====================
*/
int NET_IPSocket( char *net_interface, int port ) {
SOCKET newsocket;
struct sockaddr_in address;
qboolean _true = qtrue;
int i = 1;
int err;
if( net_interface ) {
Com_Printf( "Opening IP socket: %s:%i\n", net_interface, port );
}
else {
Com_Printf( "Opening IP socket: localhost:%i\n", port );
}
if( ( newsocket = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) {
err = socketError;
if( err != EAFNOSUPPORT ) {
Com_Printf( "WARNING: UDP_OpenSocket: socket: %s\n", NET_ErrorString() );
}
return 0;
}
// make it non-blocking
if( ioctlsocket( newsocket, FIONBIO, (u_long *)&_true ) == SOCKET_ERROR ) {
Com_Printf( "WARNING: UDP_OpenSocket: ioctl FIONBIO: %s\n", NET_ErrorString() );
return 0;
}
// make it broadcast capable
if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i) ) == SOCKET_ERROR ) {
Com_Printf( "WARNING: UDP_OpenSocket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() );
return 0;
}
if( !net_interface || !net_interface[0] || !Q_stricmp(net_interface, "localhost") ) {
address.sin_addr.s_addr = INADDR_ANY;
}
else {
Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address );
}
if( port == PORT_ANY ) {
address.sin_port = 0;
}
else {
address.sin_port = htons( (short)port );
}
address.sin_family = AF_INET;
if( bind( newsocket, (void *)&address, sizeof(address) ) == SOCKET_ERROR ) {
Com_Printf( "WARNING: UDP_OpenSocket: bind: %s\n", NET_ErrorString() );
closesocket( newsocket );
return 0;
}
return newsocket;
}
/*
====================
NET_OpenSocks
====================
*/
void NET_OpenSocks( int port ) {
struct sockaddr_in address;
int err;
struct hostent *h;
int len;
qboolean rfc1929;
unsigned char buf[64];
usingSocks = qfalse;
Com_Printf( "Opening connection to SOCKS server.\n" );
if ( ( socks_socket = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP ) ) == INVALID_SOCKET ) {
err = socketError;
Com_Printf( "WARNING: NET_OpenSocks: socket: %s\n", NET_ErrorString() );
return;
}
h = gethostbyname( net_socksServer->string );
if ( h == NULL ) {
err = socketError;
Com_Printf( "WARNING: NET_OpenSocks: gethostbyname: %s\n", NET_ErrorString() );
return;
}
if ( h->h_addrtype != AF_INET ) {
Com_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->integer );
if ( connect( socks_socket, (struct sockaddr *)&address, sizeof( address ) ) == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: connect: %s\n", NET_ErrorString() );
return;
}
// send socks authentication handshake
if ( *net_socksUsername->string || *net_socksPassword->string ) {
rfc1929 = qtrue;
}
else {
rfc1929 = qfalse;
}
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, buf, len, 0 ) == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, buf, 64, 0 );
if ( len == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if ( len != 2 || buf[0] != 5 ) {
Com_Printf( "NET_OpenSocks: bad response\n" );
return;
}
switch( buf[1] ) {
case 0: // no authentication
break;
case 2: // username/password authentication
break;
default:
Com_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 = strlen( net_socksUsername->string );
plen = strlen( net_socksPassword->string );
buf[0] = 1; // username/password authentication version
buf[1] = ulen;
if ( ulen ) {
memcpy( &buf[2], net_socksUsername->string, ulen );
}
buf[2 + ulen] = plen;
if ( plen ) {
memcpy( &buf[3 + ulen], net_socksPassword->string, plen );
}
// send it
if ( send( socks_socket, buf, 3 + ulen + plen, 0 ) == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, buf, 64, 0 );
if ( len == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if ( len != 2 || buf[0] != 1 ) {
Com_Printf( "NET_OpenSocks: bad response\n" );
return;
}
if ( buf[1] != 0 ) {
Com_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, buf, 10, 0 ) == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() );
return;
}
// get the response
len = recv( socks_socket, buf, 64, 0 );
if( len == SOCKET_ERROR ) {
err = socketError;
Com_Printf( "NET_OpenSocks: recv: %s\n", NET_ErrorString() );
return;
}
if( len < 2 || buf[0] != 5 ) {
Com_Printf( "NET_OpenSocks: bad response\n" );
return;
}
// check completion code
if( buf[1] != 0 ) {
Com_Printf( "NET_OpenSocks: request denied: %i\n", buf[1] );
return;
}
if( buf[3] != 1 ) {
Com_Printf( "NET_OpenSocks: relay address is not IPV4: %i\n", buf[3] );
return;
}
((struct sockaddr_in *)&socksRelayAddr)->sin_family = AF_INET;
((struct sockaddr_in *)&socksRelayAddr)->sin_addr.s_addr = *(int *)&buf[4];
((struct sockaddr_in *)&socksRelayAddr)->sin_port = *(short *)&buf[8];
memset( ((struct sockaddr_in *)&socksRelayAddr)->sin_zero, 0, 8 );
usingSocks = qtrue;
}
/*
=====================
NET_GetLocalAddress
=====================
*/
#ifdef MACOS_X
// Don't do a forward mapping from the hostname of the machine to the IP.
// The reason is that we might have obtained an IP address from DHCP and
// there might not be any name registered for the machine. On Mac OS X,
// the machine name defaults to 'localhost' and NetInfo has 127.0.0.1
// listed for this name. Instead, we want to get a list of all the IP
// network interfaces on the machine. This code adapted from
// OmniNetworking.
#ifdef _SIZEOF_ADDR_IFREQ
// tjw: OSX 10.4 does not have sa_len
#define IFR_NEXT(ifr) \
((struct ifreq *) ((char *) ifr + _SIZEOF_ADDR_IFREQ(*ifr)))
#else
// tjw: assume that once upon a time some version did have sa_len
#define IFR_NEXT(ifr) \
((struct ifreq *) ((char *) (ifr) + sizeof(*(ifr)) + \
MAX(0, (int) (ifr)->ifr_addr.sa_len - (int) sizeof((ifr)->ifr_addr))))
#endif
void NET_GetLocalAddress( void ) {
struct ifreq requestBuffer[MAX_IPS], *linkInterface, *inetInterface;
struct ifconf ifc;
struct ifreq ifr;
struct sockaddr_dl *sdl;
int interfaceSocket;
int family;
// Set this early so we can just return if there is an error
numIP = 0;
ifc.ifc_len = sizeof(requestBuffer);
ifc.ifc_buf = (caddr_t)requestBuffer;
// Since we get at this info via an ioctl, we need a temporary little socket.
// This will only get AF_INET interfaces, but we probably don't care about
// anything else. If we do end up caring later, we should add a
// ONAddressFamily and at a -interfaces method to it.
family = AF_INET;
if ((interfaceSocket = socket(family, SOCK_DGRAM, 0)) < 0) {
Com_Printf("NET_GetLocalAddress: Unable to create temporary socket, errno = %d\n", errno);
return;
}
if (ioctl(interfaceSocket, SIOCGIFCONF, &ifc) != 0) {
Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces, errno = %d\n", errno);
return;
}
linkInterface = (struct ifreq *) ifc.ifc_buf;
while ((char *) linkInterface < &ifc.ifc_buf[ifc.ifc_len]) {
unsigned int nameLength;
// The ioctl returns both the entries having the address (AF_INET)
// and the link layer entries (AF_LINK). The AF_LINK entry has the
// link layer address which contains the interface type. This is the
// only way I can see to get this information. We cannot assume that
// we will get bot an AF_LINK and AF_INET entry since the interface
// may not be configured. For example, if you have a 10Mb port on
// the motherboard and a 100Mb card, you may not configure the
// motherboard port.
// For each AF_LINK entry...
if (linkInterface->ifr_addr.sa_family == AF_LINK) {
// if there is a matching AF_INET entry
inetInterface = (struct ifreq *) ifc.ifc_buf;
while ((char *) inetInterface < &ifc.ifc_buf[ifc.ifc_len]) {
if (inetInterface->ifr_addr.sa_family == AF_INET &&
!strncmp(inetInterface->ifr_name, linkInterface->ifr_name,
sizeof(linkInterface->ifr_name))) {
for (nameLength = 0; nameLength < IFNAMSIZ; nameLength++)
if (!linkInterface->ifr_name[nameLength])
break;
sdl = (struct sockaddr_dl *)&linkInterface->ifr_addr;
// Skip loopback interfaces
if (sdl->sdl_type != IFT_LOOP) {
// Get the local interface address
strncpy(ifr.ifr_name, inetInterface->ifr_name, sizeof(ifr.ifr_name));
if (ioctl(interfaceSocket, OSIOCGIFADDR, (caddr_t)&ifr) < 0) {
Com_Printf("NET_GetLocalAddress: Unable to get local address "
"for interface '%s', errno = %d\n", inetInterface->ifr_name, errno);
} else {
struct sockaddr_in *sin;
int ip;
sin = (struct sockaddr_in *)&ifr.ifr_addr;
ip = ntohl(sin->sin_addr.s_addr);
localIP[ numIP ][0] = (ip >> 24) & 0xff;
localIP[ numIP ][1] = (ip >> 16) & 0xff;
localIP[ numIP ][2] = (ip >> 8) & 0xff;
localIP[ numIP ][3] = (ip >> 0) & 0xff;
Com_Printf( "IP: %i.%i.%i.%i (%s)\n",
localIP[ numIP ][0], localIP[ numIP ][1],
localIP[ numIP ][2], localIP[ numIP ][3],
inetInterface->ifr_name);
numIP++;
}
}
// We will assume that there is only one AF_INET entry per AF_LINK entry.
// What happens when we have an interface that has multiple IP addresses, or
// can that even happen?
// break;
}
inetInterface = IFR_NEXT(inetInterface);
}
}
linkInterface = IFR_NEXT(linkInterface);
}
close(interfaceSocket);
}
#else
void NET_GetLocalAddress( void ) {
char hostname[256];
struct hostent *hostInfo;
int error;
char *p;
int ip;
int n;
if( gethostname( hostname, 256 ) == SOCKET_ERROR ) {
error = socketError;
return;
}
hostInfo = gethostbyname( hostname );
if( !hostInfo ) {
error = socketError;
return;
}
Com_Printf( "Hostname: %s\n", hostInfo->h_name );
n = 0;
while( ( p = hostInfo->h_aliases[n++] ) != NULL ) {
Com_Printf( "Alias: %s\n", p );
}
if ( hostInfo->h_addrtype != AF_INET ) {
return;
}
numIP = 0;
while( ( p = hostInfo->h_addr_list[numIP] ) != NULL && numIP < MAX_IPS ) {
ip = ntohl( *(int *)p );
localIP[ numIP ][0] = p[0];
localIP[ numIP ][1] = p[1];
localIP[ numIP ][2] = p[2];
localIP[ numIP ][3] = p[3];
Com_Printf( "IP: %i.%i.%i.%i\n", ( ip >> 24 ) & 0xff, ( ip >> 16 ) & 0xff, ( ip >> 8 ) & 0xff, ip & 0xff );
numIP++;
}
}
#endif
/*
====================
NET_OpenIP
====================
*/
void NET_OpenIP( void ) {
cvar_t *ip;
int port;
int i;
ip = Cvar_Get( "net_ip", "localhost", CVAR_LATCH );
port = Cvar_Get( "net_port", va( "%i", PORT_SERVER ), CVAR_LATCH )->integer;
// automatically scan for a valid port, so multiple
// dedicated servers can be started without requiring
// a different net_port for each one
for( i = 0 ; i < 10 ; i++ ) {
ip_socket = NET_IPSocket( ip->string, port + i );
if ( ip_socket ) {
Cvar_SetValue( "net_port", port + i );
if ( net_socksEnabled->integer ) {
NET_OpenSocks( port + i );
}
NET_GetLocalAddress();
return;
}
}
Com_Printf( "WARNING: Couldn't allocate IP port\n");
}
//===================================================================
/*
====================
NET_GetCvars
====================
*/
static qboolean NET_GetCvars( void ) {
qboolean modified;
modified = qfalse;
if( net_noudp && net_noudp->modified ) {
modified = qtrue;
}
net_noudp = Cvar_Get( "net_noudp", "0", CVAR_LATCH | CVAR_ARCHIVE );
if( net_socksEnabled && net_socksEnabled->modified ) {
modified = qtrue;
}
net_socksEnabled = Cvar_Get( "net_socksEnabled", "0", CVAR_LATCH | CVAR_ARCHIVE );
if( net_socksServer && net_socksServer->modified ) {
modified = qtrue;
}
net_socksServer = Cvar_Get( "net_socksServer", "", CVAR_LATCH | CVAR_ARCHIVE );
if( net_socksPort && net_socksPort->modified ) {
modified = qtrue;
}
net_socksPort = Cvar_Get( "net_socksPort", "1080", CVAR_LATCH | CVAR_ARCHIVE );
if( net_socksUsername && net_socksUsername->modified ) {
modified = qtrue;
}
net_socksUsername = Cvar_Get( "net_socksUsername", "", CVAR_LATCH | CVAR_ARCHIVE );
if( net_socksPassword && net_socksPassword->modified ) {
modified = qtrue;
}
net_socksPassword = Cvar_Get( "net_socksPassword", "", CVAR_LATCH | CVAR_ARCHIVE );
return modified;
}
/*
====================
NET_Config
====================
*/
void NET_Config( qboolean enableNetworking ) {
qboolean modified;
qboolean stop;
qboolean start;
// get any latched changes to cvars
modified = NET_GetCvars();
if( net_noudp->integer ) {
enableNetworking = qfalse;
}
// if enable state is the same and no cvars were modified, we have nothing to do
if( enableNetworking == networkingEnabled && !modified ) {
return;
}
if( enableNetworking == networkingEnabled ) {
if( enableNetworking ) {
stop = qtrue;
start = qtrue;
}
else {
stop = qfalse;
start = qfalse;
}
}
else {
if( enableNetworking ) {
stop = qfalse;
start = qtrue;
}
else {
stop = qtrue;
start = qfalse;
}
networkingEnabled = enableNetworking;
}
if( stop ) {
if ( ip_socket && ip_socket != INVALID_SOCKET ) {
closesocket( ip_socket );
ip_socket = 0;
}
if ( socks_socket && socks_socket != INVALID_SOCKET ) {
closesocket( socks_socket );
socks_socket = 0;
}
}
if( start ) {
if (! net_noudp->integer ) {
NET_OpenIP();
}
}
}
/*
====================
NET_Init
====================
*/
void NET_Init( void ) {
#ifdef _WIN32
int r;
r = WSAStartup( MAKEWORD( 1, 1 ), &winsockdata );
if( r ) {
Com_Printf( "WARNING: Winsock initialization failed, returned %d\n", r );
return;
}
winsockInitialized = qtrue;
Com_Printf( "Winsock Initialized\n" );
#endif
// this is really just to get the cvars registered
NET_GetCvars();
NET_Config( qtrue );
}
/*
====================
NET_Shutdown
====================
*/
void NET_Shutdown( void ) {
if ( !networkingEnabled ) {
return;
}
NET_Config( qfalse );
#ifdef _WIN32
WSACleanup();
winsockInitialized = qfalse;
#endif
}
/*
====================
NET_Sleep
Sleeps msec or until something happens on the network
====================
*/
void NET_Sleep( int msec ) {
struct timeval timeout;
fd_set fdset;
if (!com_dedicated->integer)
return; // we're not a server, just run full speed
if (!ip_socket)
return;
if (msec < 0 )
return;
FD_ZERO(&fdset);
FD_SET(ip_socket, &fdset);
timeout.tv_sec = msec/1000;
timeout.tv_usec = (msec%1000)*1000;
select(ip_socket+1, &fdset, NULL, NULL, &timeout);
}
/*
====================
NET_Restart_f
====================
*/
void NET_Restart( void ) {
NET_Config( networkingEnabled );
}
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