// // Copyright 2020 Electronic Arts Inc. // // TiberianDawn.DLL and RedAlert.dll and corresponding 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. // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed // in the hope that it will be useful, but with permitted additional restrictions // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT // distributed with this program. You should have received a copy of the // GNU General Public License along with permitted additional restrictions // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection /* $Header: F:\projects\c&c\vcs\code\ipxaddr.cpv 2.17 16 Oct 1995 16:50:58 JOE_BOSTIC $ */ /*************************************************************************** ** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ** *************************************************************************** * * * Project Name : Command & Conquer * * * * File Name : IPXADDR.CPP * * * * Programmer : Bill Randolph * * * * Start Date : December 19, 1994 * * * * Last Update : December 19, 1994 [BR] * * * *-------------------------------------------------------------------------* * Functions: * * IPXAddressClass::IPXAddressClass -- class constructor * * IPXAddressClass::IPXAddressClass -- class constructor form 2 * * IPXAddressClass::IPXAddressClass -- class constructor form 3 * * IPXAddressClass::Set_Address -- sets the IPX address values * * IPXAddressClass::Set_Address -- sets the IPX values from a header * * IPXAddressClass::Get_Address -- retrieves the IPX address values * * IPXAddressClass::Get_Address -- copies address into an IPX header * * IPXAddressClass::Is_Broadcast -- tells if this is a broadcast address * * IPXAddressClass::operator== -- overloaded comparison operator * * IPXAddressClass::operator!= -- overloaded comparison operator * * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ #include "function.h" #include "tcpip.h" /*************************************************************************** * IPXAddressClass::IPXAddressClass -- class constructor * * * * This default constructor generates a broadcast address. * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ IPXAddressClass::IPXAddressClass(void) { NetworkNumber[0] = 0xff; NetworkNumber[1] = 0xff; NetworkNumber[2] = 0xff; NetworkNumber[3] = 0xff; NodeAddress[0] = 0xff; NodeAddress[1] = 0xff; NodeAddress[2] = 0xff; NodeAddress[3] = 0xff; NodeAddress[4] = 0xff; NodeAddress[5] = 0xff; } /* end of IPXAddressClass */ /*************************************************************************** * IPXAddressClass::IPXAddressClass -- class constructor form 2 * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ IPXAddressClass::IPXAddressClass(NetNumType net, NetNodeType node) { memcpy(NetworkNumber,net,4); memcpy(NodeAddress,node,6); } /* end of IPXAddressClass */ /*************************************************************************** * IPXAddressClass::IPXAddressClass -- class constructor form 3 * * * * This form of the constructor takes an IPX header as an argument. It * * extracts the address from the Source address fields in the header. * * * * INPUT: * * header Header from which to extract the address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ IPXAddressClass::IPXAddressClass(IPXHeaderType *header) { memcpy(NetworkNumber,header->SourceNetworkNumber,4); memcpy(NodeAddress,header->SourceNetworkNode,6); } /* end of IPXAddressClass */ /*************************************************************************** * IPXAddressClass::Set_Address -- sets the IPX address values * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ void IPXAddressClass::Set_Address(NetNumType net, NetNodeType node) { memcpy(NetworkNumber,net,4); memcpy(NodeAddress,node,6); } /* end of Set_Address */ /*************************************************************************** * IPXAddressClass::Set_Address -- sets the IPX values from a header * * * * This routine extracts the source addresses from the given IPX header. * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ void IPXAddressClass::Set_Address(IPXHeaderType *header) { #ifdef VIRTUAL_SUBNET_SERVER if (Winsock.Get_Connected()){ memset(NetworkNumber, 1 ,4); memset(NodeAddress, 0, 6); unsigned short target_mask = *(unsigned short*)header; /* ** If this is a head to head game (no VSS) -- ** If mask is 0 then this packet was broadcast from the other player ** Otherwise exclusive or with 3 to get other players mask */ if (!UseVirtualSubnetServer){ if (target_mask == 0){ target_mask = 1 << PlanetWestwoodIsHost; } target_mask ^= 3; } *(unsigned short*) &NodeAddress[0] = target_mask; }else{ memcpy(NetworkNumber,header->SourceNetworkNumber,4); memcpy(NodeAddress,header->SourceNetworkNode,6); } #else //VIRTUAL_SUBNET_SERVER if (header){ memcpy(NetworkNumber,header->SourceNetworkNumber,4); memcpy(NodeAddress,header->SourceNetworkNode,6); }else{ /* ** Address is meaningless when using winsock */ memset(NetworkNumber, 1 ,4); memset(NodeAddress, 1, 6); } #endif //VIRTUAL_SUBNET_SERVER } /* end of Set_Address */ /*************************************************************************** * IPXAddressClass::Get_Address -- retrieves the IPX address values * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ void IPXAddressClass::Get_Address(NetNumType net, NetNodeType node) { memcpy(net,NetworkNumber,4); memcpy(node,NodeAddress,6); } /* end of Get_Address */ /*************************************************************************** * IPXAddressClass::Get_Address -- copies address into an IPX header * * * * INPUT: * * net Network Number for this address * * node Node Address for this address * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ void IPXAddressClass::Get_Address(IPXHeaderType *header) { memcpy(header->DestNetworkNumber,NetworkNumber,4); memcpy(header->DestNetworkNode,NodeAddress,6); } /* end of Get_Address */ /*************************************************************************** * IPXAddressClass::Is_Broadcast -- tells if this is a broadcast address * * * * INPUT: * * none. * * * * OUTPUT: * * none. * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ bool IPXAddressClass::Is_Broadcast(void) { if ( NetworkNumber[0] == 0xff && NetworkNumber[1] == 0xff && NetworkNumber[2] == 0xff && NetworkNumber[3] == 0xff && NodeAddress[0] == 0xff && NodeAddress[1] == 0xff && NodeAddress[2] == 0xff && NodeAddress[3] == 0xff && NodeAddress[4] == 0xff && NodeAddress[5] == 0xff) { return(true); } else { return(false); } } /*************************************************************************** * IPXAddressClass::operator== -- overloaded comparison operator * * * * Since, if NETX isn't running, the network number on a received packet * * can be bogus (all 0's), only the node address is used for comparison * * purposes here. * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * 0 = not equal, 1 = equal * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator == (IPXAddressClass & addr) { /*------------------------------------------------------------------------ If either Network Number is all 0's (which can happen if the system is not running NETX), compare only the Node Addresses. ------------------------------------------------------------------------*/ if ( (NetworkNumber[0]==0 && NetworkNumber[1]==0 && NetworkNumber[2]==0 && NetworkNumber[3]==0) || (addr.NetworkNumber[0]==0 && addr.NetworkNumber[1]==0 && addr.NetworkNumber[2]==0 && addr.NetworkNumber[3]==0) ) { if (memcmp(NodeAddress,addr.NodeAddress,6)==0) { return(true); } else { return(false); } } else { /*------------------------------------------------------------------------ Otherwise, compare both the Network Numbers and Node Addresses ------------------------------------------------------------------------*/ if (memcmp(NodeAddress,addr.NodeAddress,6)==0 && memcmp(NetworkNumber,addr.NetworkNumber,4)==0) { return(true); } else { return(false); } } } /*************************************************************************** * IPXAddressClass::operator!= -- overloaded comparison operator * * * * Since, if NETX isn't running, the network number on a received packet * * can be bogus (all 0's), only the node address is used for comparison * * purposes here. * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * 0 = equal, 1 = not equal * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator != (IPXAddressClass & addr) { /*------------------------------------------------------------------------ If either Network Number is all 0's (which can happen if the system is not running NETX), compare only the Node Addresses. ------------------------------------------------------------------------*/ if ( (NetworkNumber[0]==0 && NetworkNumber[1]==0 && NetworkNumber[2]==0 && NetworkNumber[3]==0) || (addr.NetworkNumber[0]==0 && addr.NetworkNumber[1]==0 && addr.NetworkNumber[2]==0 && addr.NetworkNumber[3]==0) ) { if (memcmp(NodeAddress,addr.NodeAddress,6)==0) { return(false); } else { return(true); } } else { /*------------------------------------------------------------------------ Otherwise, compare both the Network Numbers and Node Addresses ------------------------------------------------------------------------*/ if (memcmp(NodeAddress,addr.NodeAddress,6)==0 && memcmp(NetworkNumber,addr.NetworkNumber,4)==0) { return(false); } else { return(true); } } } /*************************************************************************** * IPXAddressClass::operator > -- overloaded comparison operator * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * TRUE = greater, FALSE = not * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator > (IPXAddressClass & addr) { return(memcmp(this, &addr, 10) > 0); } /* end of operator != */ /*************************************************************************** * IPXAddressClass::operator < -- overloaded comparison operator * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * TRUE = less, FALSE = not * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator < (IPXAddressClass & addr) { return(memcmp(this, &addr, 10) < 0); } /* end of operator != */ /*************************************************************************** * IPXAddressClass::operator >= -- overloaded comparison operator * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * TRUE = greater or equal, FALSE = not * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator >= (IPXAddressClass & addr) { return(memcmp(this, &addr, 10) >= 0); } /* end of operator != */ /*************************************************************************** * IPXAddressClass::operator <= -- overloaded comparison operator * * * * INPUT: * * addr address to compare to * * * * OUTPUT: * * TRUE = less or equal, FALSE = not * * * * WARNINGS: * * none. * * * * HISTORY: * * 12/19/1994 BR : Created. * *=========================================================================*/ int IPXAddressClass::operator <= (IPXAddressClass & addr) { return(memcmp(this, &addr, 10) <= 0); } /* end of operator != */