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Diffstat (limited to 'code/qcommon/net_ip.c')
| -rw-r--r-- | code/qcommon/net_ip.c | 1681 |
1 files changed, 1681 insertions, 0 deletions
diff --git a/code/qcommon/net_ip.c b/code/qcommon/net_ip.c new file mode 100644 index 0000000..1c03e1b --- /dev/null +++ b/code/qcommon/net_ip.c @@ -0,0 +1,1681 @@ +/* +=========================================================================== +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 <winsock2.h> +# include <ws2tcpip.h> +# if WINVER < 0x501 +# ifdef __MINGW32__ + // wspiapi.h isn't available on MinGW, so if it's + // present it's because the end user has added it + // and we should look for it in our tree +# include "wspiapi.h" +# else +# include <wspiapi.h> +# endif +# else +# include <ws2spi.h> +# endif + +typedef int socklen_t; +# ifdef ADDRESS_FAMILY +# define sa_family_t ADDRESS_FAMILY +# else +typedef unsigned short sa_family_t; +# endif + +# 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/socket.h> +# include <net/if.h> +# include <sys/ioctl.h> +# include <sys/types.h> +# include <sys/time.h> +# include <unistd.h> +# if !defined(__sun) && !defined(__sgi) +# include <ifaddrs.h> +# 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 int networkingEnabled = 0; + +static cvar_t *net_enabled; + +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 cvar_t *net_ip; +static cvar_t *net_ip6; +static cvar_t *net_port; +static cvar_t *net_port6; +static cvar_t *net_mcast6addr; +static cvar_t *net_mcast6iface; + +static struct sockaddr socksRelayAddr; + +static SOCKET ip_socket = INVALID_SOCKET; +static SOCKET ip6_socket = INVALID_SOCKET; +static SOCKET socks_socket = INVALID_SOCKET; +static SOCKET multicast6_socket = INVALID_SOCKET; + +// Keep track of currently joined multicast group. +static struct ipv6_mreq curgroup; +// And the currently bound address. +static struct sockaddr_in6 boundto; + +#ifndef IF_NAMESIZE + #define IF_NAMESIZE 16 +#endif + +// use an admin local address per default so that network admins can decide on how to handle quake3 traffic. +#define NET_MULTICAST_IP6 "ff04::696f:7175:616b:6533" + +#define MAX_IPS 32 + +typedef struct +{ + char ifname[IF_NAMESIZE]; + + netadrtype_t type; + sa_family_t family; + struct sockaddr_storage addr; + struct sockaddr_storage netmask; +} nip_localaddr_t; + +static nip_localaddr_t localIP[MAX_IPS]; +static int numIP; + + +//============================================================================= + + +/* +==================== +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 ) { + 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; + } + else if( a->type == NA_IP6 ) { + ((struct sockaddr_in6 *)s)->sin6_family = AF_INET6; + ((struct sockaddr_in6 *)s)->sin6_addr = * ((struct in6_addr *) &a->ip6); + ((struct sockaddr_in6 *)s)->sin6_port = a->port; + ((struct sockaddr_in6 *)s)->sin6_scope_id = a->scope_id; + } + else if(a->type == NA_MULTICAST6) + { + ((struct sockaddr_in6 *)s)->sin6_family = AF_INET6; + ((struct sockaddr_in6 *)s)->sin6_addr = curgroup.ipv6mr_multiaddr; + ((struct sockaddr_in6 *)s)->sin6_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; + } + else if(s->sa_family == AF_INET6) + { + a->type = NA_IP6; + memcpy(a->ip6, &((struct sockaddr_in6 *)s)->sin6_addr, sizeof(a->ip6)); + a->port = ((struct sockaddr_in6 *)s)->sin6_port; + a->scope_id = ((struct sockaddr_in6 *)s)->sin6_scope_id; + } +} + + +static struct addrinfo *SearchAddrInfo(struct addrinfo *hints, sa_family_t family) +{ + while(hints) + { + if(hints->ai_family == family) + return hints; + + hints = hints->ai_next; + } + + return NULL; +} + +/* +============= +Sys_StringToSockaddr +============= +*/ +static qboolean Sys_StringToSockaddr(const char *s, struct sockaddr *sadr, int sadr_len, sa_family_t family) +{ + struct addrinfo hints; + struct addrinfo *res = NULL; + struct addrinfo *search = NULL; + struct addrinfo *hintsp; + int retval; + + memset(sadr, '\0', sizeof(*sadr)); + memset(&hints, '\0', sizeof(hints)); + + hintsp = &hints; + hintsp->ai_family = family; + hintsp->ai_socktype = SOCK_DGRAM; + + retval = getaddrinfo(s, NULL, hintsp, &res); + + if(!retval) + { + if(family == AF_UNSPEC) + { + // Decide here and now which protocol family to use + if(net_enabled->integer & NET_PRIOV6) + { + if(net_enabled->integer & NET_ENABLEV6) + search = SearchAddrInfo(res, AF_INET6); + + if(!search && (net_enabled->integer & NET_ENABLEV4)) + search = SearchAddrInfo(res, AF_INET); + } + else + { + if(net_enabled->integer & NET_ENABLEV4) + search = SearchAddrInfo(res, AF_INET); + + if(!search && (net_enabled->integer & NET_ENABLEV6)) + search = SearchAddrInfo(res, AF_INET6); + } + } + else + search = SearchAddrInfo(res, family); + + if(search) + { + if(res->ai_addrlen > sadr_len) + res->ai_addrlen = sadr_len; + + memcpy(sadr, res->ai_addr, res->ai_addrlen); + freeaddrinfo(res); + + return qtrue; + } + else + Com_Printf("Sys_StringToSockaddr: Error resolving %s: No address of required type found.\n", s); + } + else + Com_Printf("Sys_StringToSockaddr: Error resolving %s: %s\n", s, gai_strerror(retval)); + + if(res) + freeaddrinfo(res); + + return qfalse; +} + +/* +============= +Sys_SockaddrToString +============= +*/ +static void Sys_SockaddrToString(char *dest, int destlen, struct sockaddr *input) +{ + socklen_t inputlen; + + if (input->sa_family == AF_INET6) + inputlen = sizeof(struct sockaddr_in6); + else + inputlen = sizeof(struct sockaddr_in); + + if(getnameinfo(input, inputlen, dest, destlen, NULL, 0, NI_NUMERICHOST) && destlen > 0) + *dest = '\0'; +} + +/* +============= +Sys_StringToAdr +============= +*/ +qboolean Sys_StringToAdr( const char *s, netadr_t *a, netadrtype_t family ) { + struct sockaddr_storage sadr; + sa_family_t fam; + + switch(family) + { + case NA_IP: + fam = AF_INET; + break; + case NA_IP6: + fam = AF_INET6; + break; + default: + fam = AF_UNSPEC; + break; + } + if( !Sys_StringToSockaddr(s, (struct sockaddr *) &sadr, sizeof(sadr), fam ) ) { + return qfalse; + } + + SockadrToNetadr( (struct sockaddr *) &sadr, a ); + return qtrue; +} + +/* +=================== +NET_CompareBaseAdrMask + +Compare without port, and up to the bit number given in netmask. +=================== +*/ +qboolean NET_CompareBaseAdrMask(netadr_t a, netadr_t b, int netmask) +{ + qboolean differed; + byte cmpmask, *addra, *addrb; + int curbyte; + + if (a.type != b.type) + return qfalse; + + if (a.type == NA_LOOPBACK) + return qtrue; + + if(a.type == NA_IP) + { + addra = (byte *) &a.ip; + addrb = (byte *) &b.ip; + + if(netmask < 0 || netmask > 32) + netmask = 32; + } + else if(a.type == NA_IP6) + { + addra = (byte *) &a.ip6; + addrb = (byte *) &b.ip6; + + if(netmask < 0 || netmask > 128) + netmask = 128; + } + else + { + Com_Printf ("NET_CompareBaseAdr: bad address type\n"); + return qfalse; + } + + differed = qfalse; + curbyte = 0; + + while(netmask > 7) + { + if(addra[curbyte] != addrb[curbyte]) + { + differed = qtrue; + break; + } + + curbyte++; + netmask -= 8; + } + + if(differed) + return qfalse; + + if(netmask) + { + cmpmask = (1 << netmask) - 1; + cmpmask <<= 8 - netmask; + + if((addra[curbyte] & cmpmask) == (addrb[curbyte] & cmpmask)) + return qtrue; + } + else + return qtrue; + + return qfalse; +} + + +/* +=================== +NET_CompareBaseAdr + +Compares without the port +=================== +*/ +qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b) +{ + return NET_CompareBaseAdrMask(a, b, -1); +} + +const char *NET_AdrToString (netadr_t a) +{ + static char s[NET_ADDRSTRMAXLEN]; + + if (a.type == NA_LOOPBACK) + Com_sprintf (s, sizeof(s), "loopback"); + else if (a.type == NA_BOT) + Com_sprintf (s, sizeof(s), "bot"); + else if (a.type == NA_IP || a.type == NA_IP6) + { + struct sockaddr_storage sadr; + + memset(&sadr, 0, sizeof(sadr)); + NetadrToSockadr(&a, (struct sockaddr *) &sadr); + Sys_SockaddrToString(s, sizeof(s), (struct sockaddr *) &sadr); + } + + return s; +} + +const char *NET_AdrToStringwPort (netadr_t a) +{ + static char s[NET_ADDRSTRMAXLEN]; + + if (a.type == NA_LOOPBACK) + Com_sprintf (s, sizeof(s), "loopback"); + else if (a.type == NA_BOT) + Com_sprintf (s, sizeof(s), "bot"); + else if(a.type == NA_IP) + Com_sprintf(s, sizeof(s), "%s:%hu", NET_AdrToString(a), ntohs(a.port)); + else if(a.type == NA_IP6) + Com_sprintf(s, sizeof(s), "[%s]:%hu", NET_AdrToString(a), ntohs(a.port)); + + return s; +} + + +qboolean NET_CompareAdr (netadr_t a, netadr_t b) +{ + if(!NET_CompareBaseAdr(a, b)) + return qfalse; + + if (a.type == NA_IP || a.type == NA_IP6) + { + if (a.port == b.port) + return qtrue; + } + else + return qtrue; + + return qfalse; +} + + +qboolean NET_IsLocalAddress( netadr_t adr ) { + return adr.type == NA_LOOPBACK; +} + +//============================================================================= + +/* +================== +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_storage from; + socklen_t fromlen; + int err; + +#ifdef _DEBUG + recvfromCount++; // performance check +#endif + + if(ip_socket != INVALID_SOCKET) + { + fromlen = sizeof(from); + ret = recvfrom( ip_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen ); + + if (ret == SOCKET_ERROR) + { + err = socketError; + + if( err != EAGAIN && err != ECONNRESET ) + Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() ); + } + else + { + + 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( (struct sockaddr *) &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; + } + } + + if(ip6_socket != INVALID_SOCKET) + { + fromlen = sizeof(from); + ret = recvfrom(ip6_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen); + + if (ret == SOCKET_ERROR) + { + err = socketError; + + if( err != EAGAIN && err != ECONNRESET ) + Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() ); + } + else + { + SockadrToNetadr((struct sockaddr *) &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; + } + } + + if(multicast6_socket != INVALID_SOCKET && multicast6_socket != ip6_socket) + { + fromlen = sizeof(from); + ret = recvfrom(multicast6_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen); + + if (ret == SOCKET_ERROR) + { + err = socketError; + + if( err != EAGAIN && err != ECONNRESET ) + Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() ); + } + else + { + SockadrToNetadr((struct sockaddr *) &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; + } + } + + + return qfalse; +} + +//============================================================================= + +static char socksBuf[4096]; + +/* +================== +Sys_SendPacket +================== +*/ +void Sys_SendPacket( int length, const void *data, netadr_t to ) { + int ret = SOCKET_ERROR; + struct sockaddr_storage addr; + + if( to.type != NA_BROADCAST && to.type != NA_IP && to.type != NA_IP6 && to.type != NA_MULTICAST6) + { + Com_Error( ERR_FATAL, "Sys_SendPacket: bad address type" ); + return; + } + + if( (ip_socket == INVALID_SOCKET && to.type == NA_IP) || + (ip6_socket == INVALID_SOCKET && to.type == NA_IP6) || + (ip6_socket == INVALID_SOCKET && to.type == NA_MULTICAST6) ) + return; + + if(to.type == NA_MULTICAST6 && (net_enabled->integer & NET_DISABLEMCAST)) + return; + + memset(&addr, 0, sizeof(addr)); + NetadrToSockadr( &to, (struct sockaddr *) &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 { + if(addr.ss_family == AF_INET) + ret = sendto( ip_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(struct sockaddr_in) ); + else if(addr.ss_family == AF_INET6) + ret = sendto( ip6_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(struct sockaddr_in6) ); + } + 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 index, run, addrsize; + qboolean differed; + byte *compareadr, *comparemask, *compareip; + + if( adr.type == NA_LOOPBACK ) { + return qtrue; + } + + if( adr.type == NA_IP ) + { + // 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; + + if(adr.ip[0] == 127) + return qtrue; + } + else if(adr.type == NA_IP6) + { + if(adr.ip6[0] == 0xfe && (adr.ip6[1] & 0xc0) == 0x80) + return qtrue; + if((adr.ip6[0] & 0xfe) == 0xfc) + return qtrue; + } + + // Now compare against the networks this computer is member of. + for(index = 0; index < numIP; index++) + { + if(localIP[index].type == adr.type) + { + if(adr.type == NA_IP) + { + compareip = (byte *) &((struct sockaddr_in *) &localIP[index].addr)->sin_addr.s_addr; + comparemask = (byte *) &((struct sockaddr_in *) &localIP[index].netmask)->sin_addr.s_addr; + compareadr = adr.ip; + + addrsize = sizeof(adr.ip); + } + else + { + // TODO? should we check the scope_id here? + + compareip = (byte *) &((struct sockaddr_in6 *) &localIP[index].addr)->sin6_addr; + comparemask = (byte *) &((struct sockaddr_in6 *) &localIP[index].netmask)->sin6_addr; + compareadr = adr.ip6; + + addrsize = sizeof(adr.ip6); + } + + differed = qfalse; + for(run = 0; run < addrsize; run++) + { + if((compareip[run] & comparemask[run]) != (compareadr[run] & comparemask[run])) + { + differed = qtrue; + break; + } + } + + if(!differed) + return qtrue; + + } + } + + return qfalse; +} + +/* +================== +Sys_ShowIP +================== +*/ +void Sys_ShowIP(void) { + int i; + char addrbuf[NET_ADDRSTRMAXLEN]; + + for(i = 0; i < numIP; i++) + { + Sys_SockaddrToString(addrbuf, sizeof(addrbuf), (struct sockaddr *) &localIP[i].addr); + + if(localIP[i].type == NA_IP) + Com_Printf( "IP: %s\n", addrbuf); + else if(localIP[i].type == NA_IP6) + Com_Printf( "IP6: %s\n", addrbuf); + } +} + + +//============================================================================= + + +/* +==================== +NET_IPSocket +==================== +*/ +int NET_IPSocket( char *net_interface, int port, int *err ) { + SOCKET newsocket; + struct sockaddr_in address; + u_long _true = 1; + int i = 1; + + *err = 0; + + if( net_interface ) { + Com_Printf( "Opening IP socket: %s:%i\n", net_interface, port ); + } + else { + Com_Printf( "Opening IP socket: 0.0.0.0:%i\n", port ); + } + + if( ( newsocket = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) { + *err = socketError; + Com_Printf( "WARNING: NET_IPSocket: socket: %s\n", NET_ErrorString() ); + return newsocket; + } + // make it non-blocking + if( ioctlsocket( newsocket, FIONBIO, &_true ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IPSocket: ioctl FIONBIO: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket(newsocket); + return INVALID_SOCKET; + } + + // make it broadcast capable + if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, (char *) &i, sizeof(i) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IPSocket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() ); + } + + if( !net_interface || !net_interface[0]) { + address.sin_family = AF_INET; + address.sin_addr.s_addr = INADDR_ANY; + } + else + { + if(!Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address, sizeof(address), AF_INET)) + { + closesocket(newsocket); + return INVALID_SOCKET; + } + } + + if( port == PORT_ANY ) { + address.sin_port = 0; + } + else { + address.sin_port = htons( (short)port ); + } + + if( bind( newsocket, (void *)&address, sizeof(address) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IPSocket: bind: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket( newsocket ); + return INVALID_SOCKET; + } + + return newsocket; +} + +/* +==================== +NET_IP6Socket +==================== +*/ +int NET_IP6Socket( char *net_interface, int port, struct sockaddr_in6 *bindto, int *err ) { + SOCKET newsocket; + struct sockaddr_in6 address; + u_long _true = 1; + + *err = 0; + + if( net_interface ) + { + // Print the name in brackets if there is a colon: + if(Q_CountChar(net_interface, ':')) + Com_Printf( "Opening IP6 socket: [%s]:%i\n", net_interface, port ); + else + Com_Printf( "Opening IP6 socket: %s:%i\n", net_interface, port ); + } + else + Com_Printf( "Opening IP6 socket: [::]:%i\n", port ); + + if( ( newsocket = socket( PF_INET6, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) { + *err = socketError; + Com_Printf( "WARNING: NET_IP6Socket: socket: %s\n", NET_ErrorString() ); + return newsocket; + } + + // make it non-blocking + if( ioctlsocket( newsocket, FIONBIO, &_true ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IP6Socket: ioctl FIONBIO: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket(newsocket); + return INVALID_SOCKET; + } + +#ifdef IPV6_V6ONLY + { + int i = 1; + + // ipv4 addresses should not be allowed to connect via this socket. + if(setsockopt(newsocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *) &i, sizeof(i)) == SOCKET_ERROR) + { + // win32 systems don't seem to support this anyways. + Com_DPrintf("WARNING: NET_IP6Socket: setsockopt IPV6_V6ONLY: %s\n", NET_ErrorString()); + } + } +#endif + + if( !net_interface || !net_interface[0]) { + address.sin6_family = AF_INET6; + address.sin6_addr = in6addr_any; + } + else + { + if(!Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address, sizeof(address), AF_INET6)) + { + closesocket(newsocket); + return INVALID_SOCKET; + } + } + + if( port == PORT_ANY ) { + address.sin6_port = 0; + } + else { + address.sin6_port = htons( (short)port ); + } + + if( bind( newsocket, (void *)&address, sizeof(address) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IP6Socket: bind: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket( newsocket ); + return INVALID_SOCKET; + } + + if(bindto) + *bindto = address; + + return newsocket; +} + +/* +==================== +NET_SetMulticast +Set the current multicast group +==================== +*/ +void NET_SetMulticast6(void) +{ + struct sockaddr_in6 addr; + + if(!*net_mcast6addr->string || !Sys_StringToSockaddr(net_mcast6addr->string, (struct sockaddr *) &addr, sizeof(addr), AF_INET6)) + { + Com_Printf("WARNING: NET_JoinMulticast6: Incorrect multicast address given, " + "please set cvar %s to a sane value.\n", net_mcast6addr->name); + + Cvar_SetValue(net_enabled->name, net_enabled->integer | NET_DISABLEMCAST); + + return; + } + + memcpy(&curgroup.ipv6mr_multiaddr, &addr.sin6_addr, sizeof(curgroup.ipv6mr_multiaddr)); + + if(*net_mcast6iface->string) + { +#ifdef _WIN32 + curgroup.ipv6mr_interface = net_mcast6iface->integer; +#else + curgroup.ipv6mr_interface = if_nametoindex(net_mcast6iface->string); +#endif + } + else + curgroup.ipv6mr_interface = 0; +} + +/* +==================== +NET_JoinMulticast +Join an ipv6 multicast group +==================== +*/ +void NET_JoinMulticast6(void) +{ + int err; + + if(ip6_socket == INVALID_SOCKET || multicast6_socket != INVALID_SOCKET || (net_enabled->integer & NET_DISABLEMCAST)) + return; + + if(IN6_IS_ADDR_MULTICAST(&boundto.sin6_addr) || IN6_IS_ADDR_UNSPECIFIED(&boundto.sin6_addr)) + { + // The way the socket was bound does not prohibit receiving multi-cast packets. So we don't need to open a new one. + multicast6_socket = ip6_socket; + } + else + { + if((multicast6_socket = NET_IP6Socket(net_mcast6addr->string, ntohs(boundto.sin6_port), NULL, &err)) == INVALID_SOCKET) + { + // If the OS does not support binding to multicast addresses, like WinXP, at least try with the normal file descriptor. + multicast6_socket = ip6_socket; + } + } + + if(curgroup.ipv6mr_interface) + { + if (setsockopt(multicast6_socket, IPPROTO_IPV6, IPV6_MULTICAST_IF, + (char *) &curgroup.ipv6mr_interface, sizeof(curgroup.ipv6mr_interface)) < 0) + { + Com_Printf("NET_JoinMulticast6: Couldn't set scope on multicast socket: %s\n", NET_ErrorString()); + + if(multicast6_socket != ip6_socket) + { + closesocket(multicast6_socket); + multicast6_socket = INVALID_SOCKET; + return; + } + } + } + + if (setsockopt(multicast6_socket, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *) &curgroup, sizeof(curgroup))) + { + Com_Printf("NET_JoinMulticast6: Couldn't join multicast group: %s\n", NET_ErrorString()); + + if(multicast6_socket != ip6_socket) + { + closesocket(multicast6_socket); + multicast6_socket = INVALID_SOCKET; + return; + } + } +} + +void NET_LeaveMulticast6() +{ + if(multicast6_socket != INVALID_SOCKET) + { + if(multicast6_socket != ip6_socket) + closesocket(multicast6_socket); + else + setsockopt(multicast6_socket, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *) &curgroup, sizeof(curgroup)); + + multicast6_socket = INVALID_SOCKET; + } +} + +/* +==================== +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, (void *)buf, len, 0 ) == SOCKET_ERROR ) { + err = socketError; + Com_Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() ); + return; + } + + // get the response + len = recv( socks_socket, (void *)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, (void *)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, (void *)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, (void *)buf, 10, 0 ) == SOCKET_ERROR ) { + err = socketError; + Com_Printf( "NET_OpenSocks: send: %s\n", NET_ErrorString() ); + return; + } + + // get the response + len = recv( socks_socket, (void *)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_AddLocalAddress +===================== +*/ +static void NET_AddLocalAddress(char *ifname, struct sockaddr *addr, struct sockaddr *netmask) +{ + int addrlen; + sa_family_t family; + + // only add addresses that have all required info. + if(!addr || !netmask || !ifname) + return; + + family = addr->sa_family; + + if(numIP < MAX_IPS) + { + if(family == AF_INET) + { + addrlen = sizeof(struct sockaddr_in); + localIP[numIP].type = NA_IP; + } + else if(family == AF_INET6) + { + addrlen = sizeof(struct sockaddr_in6); + localIP[numIP].type = NA_IP6; + } + else + return; + + Q_strncpyz(localIP[numIP].ifname, ifname, sizeof(localIP[numIP].ifname)); + + localIP[numIP].family = family; + + memcpy(&localIP[numIP].addr, addr, addrlen); + memcpy(&localIP[numIP].netmask, netmask, addrlen); + + numIP++; + } +} + +#if defined(__linux__) || defined(MACOSX) || defined(__BSD__) +static void NET_GetLocalAddress(void) +{ + struct ifaddrs *ifap, *search; + + if(getifaddrs(&ifap)) + Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces: %s\n", NET_ErrorString()); + else + { + for(search = ifap; search; search = search->ifa_next) + { + // Only add interfaces that are up. + if(ifap->ifa_flags & IFF_UP) + NET_AddLocalAddress(search->ifa_name, search->ifa_addr, search->ifa_netmask); + } + + freeifaddrs(ifap); + + Sys_ShowIP(); + } +} +#else +static void NET_GetLocalAddress( void ) { + char hostname[256]; + struct addrinfo hint; + struct addrinfo *res = NULL; + + if(gethostname( hostname, 256 ) == SOCKET_ERROR) + return; + + Com_Printf( "Hostname: %s\n", hostname ); + + memset(&hint, 0, sizeof(hint)); + + hint.ai_family = AF_UNSPEC; + hint.ai_socktype = SOCK_DGRAM; + + if(!getaddrinfo(hostname, NULL, &hint, &res)) + { + struct sockaddr_in mask4; + struct sockaddr_in6 mask6; + struct addrinfo *search; + + /* On operating systems where it's more difficult to find out the configured interfaces, we'll just assume a + * netmask with all bits set. */ + + memset(&mask4, 0, sizeof(mask4)); + memset(&mask6, 0, sizeof(mask6)); + mask4.sin_family = AF_INET; + memset(&mask4.sin_addr.s_addr, 0xFF, sizeof(mask4.sin_addr.s_addr)); + mask6.sin6_family = AF_INET6; + memset(&mask6.sin6_addr, 0xFF, sizeof(mask6.sin6_addr)); + + // add all IPs from returned list. + for(search = res; search; search = search->ai_next) + { + if(search->ai_family == AF_INET) + NET_AddLocalAddress("", search->ai_addr, (struct sockaddr *) &mask4); + else if(search->ai_family == AF_INET6) + NET_AddLocalAddress("", search->ai_addr, (struct sockaddr *) &mask6); + } + + Sys_ShowIP(); + } + + if(res) + freeaddrinfo(res); +} +#endif + +/* +==================== +NET_OpenIP +==================== +*/ +void NET_OpenIP( void ) { + int i; + int err; + int port; + int port6; + + port = net_port->integer; + port6 = net_port6->integer; + + NET_GetLocalAddress(); + + // automatically scan for a valid port, so multiple + // dedicated servers can be started without requiring + // a different net_port for each one + + if(net_enabled->integer & NET_ENABLEV6) + { + for( i = 0 ; i < 10 ; i++ ) + { + ip6_socket = NET_IP6Socket(net_ip6->string, port6 + i, &boundto, &err); + if (ip6_socket != INVALID_SOCKET) + { + Cvar_SetValue( "net_port6", port6 + i ); + break; + } + else + { + if(err == EAFNOSUPPORT) + break; + } + } + if(ip6_socket == INVALID_SOCKET) + Com_Printf( "WARNING: Couldn't bind to a v6 ip address.\n"); + } + + if(net_enabled->integer & NET_ENABLEV4) + { + for( i = 0 ; i < 10 ; i++ ) { + ip_socket = NET_IPSocket( net_ip->string, port + i, &err ); + if (ip_socket != INVALID_SOCKET) { + Cvar_SetValue( "net_port", port + i ); + + if (net_socksEnabled->integer) + NET_OpenSocks( port + i ); + + break; + } + else + { + if(err == EAFNOSUPPORT) + break; + } + } + + if(ip_socket == INVALID_SOCKET) + Com_Printf( "WARNING: Couldn't bind to a v4 ip address.\n"); + } +} + + +//=================================================================== + + +/* +==================== +NET_GetCvars +==================== +*/ +static qboolean NET_GetCvars( void ) { + int modified; + +#ifdef DEDICATED + // I want server owners to explicitly turn on ipv6 support. + net_enabled = Cvar_Get( "net_enabled", "1", CVAR_LATCH | CVAR_ARCHIVE ); +#else + /* End users have it enabled so they can connect to ipv6-only hosts, but ipv4 will be + * used if available due to ping */ + net_enabled = Cvar_Get( "net_enabled", "3", CVAR_LATCH | CVAR_ARCHIVE ); +#endif + modified = net_enabled->modified; + net_enabled->modified = qfalse; + + net_ip = Cvar_Get( "net_ip", "0.0.0.0", CVAR_LATCH ); + modified += net_ip->modified; + net_ip->modified = qfalse; + + net_ip6 = Cvar_Get( "net_ip6", "::", CVAR_LATCH ); + modified += net_ip6->modified; + net_ip6->modified = qfalse; + + net_port = Cvar_Get( "net_port", va( "%i", PORT_SERVER ), CVAR_LATCH ); + modified += net_port->modified; + net_port->modified = qfalse; + + net_port6 = Cvar_Get( "net_port6", va( "%i", PORT_SERVER ), CVAR_LATCH ); + modified += net_port6->modified; + net_port6->modified = qfalse; + + // Some cvars for configuring multicast options which facilitates scanning for servers on local subnets. + net_mcast6addr = Cvar_Get( "net_mcast6addr", NET_MULTICAST_IP6, CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_mcast6addr->modified; + net_mcast6addr->modified = qfalse; + +#ifdef _WIN32 + net_mcast6iface = Cvar_Get( "net_mcast6iface", "0", CVAR_LATCH | CVAR_ARCHIVE ); +#else + net_mcast6iface = Cvar_Get( "net_mcast6iface", "", CVAR_LATCH | CVAR_ARCHIVE ); +#endif + modified += net_mcast6iface->modified; + net_mcast6iface->modified = qfalse; + + net_socksEnabled = Cvar_Get( "net_socksEnabled", "0", CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_socksEnabled->modified; + net_socksEnabled->modified = qfalse; + + net_socksServer = Cvar_Get( "net_socksServer", "", CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_socksServer->modified; + net_socksServer->modified = qfalse; + + net_socksPort = Cvar_Get( "net_socksPort", "1080", CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_socksPort->modified; + net_socksPort->modified = qfalse; + + net_socksUsername = Cvar_Get( "net_socksUsername", "", CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_socksUsername->modified; + net_socksUsername->modified = qfalse; + + net_socksPassword = Cvar_Get( "net_socksPassword", "", CVAR_LATCH | CVAR_ARCHIVE ); + modified += net_socksPassword->modified; + net_socksPassword->modified = qfalse; + + return modified ? qtrue : qfalse; +} + + +/* +==================== +NET_Config +==================== +*/ +void NET_Config( qboolean enableNetworking ) { + qboolean modified; + qboolean stop; + qboolean start; + + // get any latched changes to cvars + modified = NET_GetCvars(); + + if( !net_enabled->integer ) { + enableNetworking = 0; + } + + // 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 != INVALID_SOCKET ) { + closesocket( ip_socket ); + ip_socket = INVALID_SOCKET; + } + + if(multicast6_socket) + { + if(multicast6_socket != ip6_socket) + closesocket(multicast6_socket); + + multicast6_socket = INVALID_SOCKET; + } + + if ( ip6_socket != INVALID_SOCKET ) { + closesocket( ip6_socket ); + ip6_socket = INVALID_SOCKET; + } + + if ( socks_socket != INVALID_SOCKET ) { + closesocket( socks_socket ); + socks_socket = INVALID_SOCKET; + } + + } + + if( start ) + { + if (net_enabled->integer) + { + NET_OpenIP(); + NET_SetMulticast6(); + } + } +} + + +/* +==================== +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 + + NET_Config( qtrue ); + + Cmd_AddCommand ("net_restart", NET_Restart_f); +} + + +/* +==================== +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; + int highestfd = -1; + + if (!com_dedicated->integer) + return; // we're not a server, just run full speed + + if (ip_socket == INVALID_SOCKET && ip6_socket == INVALID_SOCKET) + return; + + if (msec < 0 ) + return; + + FD_ZERO(&fdset); + + if(ip_socket != INVALID_SOCKET) + { + FD_SET(ip_socket, &fdset); + + highestfd = ip_socket; + } + if(ip6_socket != INVALID_SOCKET) + { + FD_SET(ip6_socket, &fdset); + + if(ip6_socket > highestfd) + highestfd = ip6_socket; + } + + timeout.tv_sec = msec/1000; + timeout.tv_usec = (msec%1000)*1000; + select(highestfd + 1, &fdset, NULL, NULL, &timeout); +} + + +/* +==================== +NET_Restart_f +==================== +*/ +void NET_Restart_f( void ) { + NET_Config( networkingEnabled ); +} |