422 lines
12 KiB
C
Executable file
422 lines
12 KiB
C
Executable file
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include "types.h"
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#include "config.h"
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#include "args.h"
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#include "text.h"
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#include "network.h"
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#include "mono.h"
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#include "ipx.h"
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#include "ipx_drv.h"
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//added 05/17/99 Matt Mueller - needed to redefine FD_* so that no asm is used
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#include "checker.h"
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//end addition -MM
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#define MAX_IPX_DATA 576
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ubyte broadcast_addr[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
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ubyte null_addr[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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//int ipx_fd;
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//ipx_socket_t ipx_socket_data;
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ubyte ipx_installed=0;
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ubyte ipx_atexit_installed=0;
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//ushort ipx_socket = 0;
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u_int32_t ipx_network = 0;
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ubyte ipx_MyAddress[10];
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int ipx_packetnum = 0; /* Sequence number */
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/* User defined routing stuff */
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typedef struct user_address {
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ubyte network[4];
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ubyte node[6];
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ubyte address[6];
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} user_address;
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#define MAX_USERS 64
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int Ipx_num_users = 0;
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user_address Ipx_users[MAX_USERS];
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#define MAX_NETWORKS 64
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int Ipx_num_networks = 0;
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uint Ipx_networks[MAX_NETWORKS];
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void ipx_close(void);
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int ipx_general_PacketReady(int fd) {
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fd_set set;
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struct timeval tv;
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FD_ZERO(&set);
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FD_SET(fd, &set);
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tv.tv_sec = tv.tv_usec = 0;
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if (select(fd + 1, &set, NULL, NULL, &tv) > 0)
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return 1;
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else
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return 0;
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}
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struct ipx_driver *driver = NULL;
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ubyte * ipx_get_my_server_address()
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{
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return (ubyte *)&ipx_network;
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}
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ubyte * ipx_get_my_local_address()
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{
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return (ubyte *)(ipx_MyAddress + 4);
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}
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//---------------------------------------------------------------
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// Initializes all IPX internals.
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// If socket_number==0, then opens next available socket.
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// Returns: 0 if successful.
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// -1 if socket already open.
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// -2 if socket table full.
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// -3 if IPX not installed.
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// -4 if couldn't allocate low dos memory
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// -5 if error with getting internetwork address
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int ipx_init( int socket_number )
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{
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int i;
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if (!driver) return -1;
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memset(ipx_MyAddress,0,10);
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if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
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unsigned long n = strtol(Args[i + 1], NULL, 16);
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ipx_MyAddress[0] = n >> 24; ipx_MyAddress[1] = (n >> 16) & 255;
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ipx_MyAddress[2] = (n >> 8) & 255; ipx_MyAddress[3] = n & 255;
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printf("IPX: Using network %08x\n", (unsigned int)n);
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}
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if (driver->OpenSocket(socket_number)) {
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return -3;
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}
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// if (driver->GetMyAddress)
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// driver->GetMyAddress();
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memcpy(&ipx_network, ipx_MyAddress, 4);
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Ipx_num_networks = 0;
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memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
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ipx_installed = 1;
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if (ipx_atexit_installed==0){
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atexit(ipx_close);
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ipx_atexit_installed=1;
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}
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return 0;
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}
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void ipx_close()
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{
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if (ipx_installed)
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driver->CloseSocket();
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ipx_installed = 0;
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}
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//########printfs??
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int ipx_set_driver(char *arg)
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{
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ipx_close();
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if (!FindArg( "-nonetwork" )) {
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int socket=0;
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int ipx_error;
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int t;
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if (Inferno_verbose) printf( "\n%s ", TXT_INITIALIZING_NETWORK);
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if ((t=FindArg("-socket")))
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socket = atoi( Args[t+1] );
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if ((t=FindArg("-pps")) && (t = atoi(Args[t+1])) && (t >= 2) && (t <= 20)) {
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Network_initial_pps = t;
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}
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if ( FindArg("-shortpackets") )
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Network_initial_shortpackets = 1;
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#ifdef SUPPORTS_NET_IP
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if (strcmp(arg,"ip")==0){
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driver=&ipx_ip;
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}else
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#endif
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driver=arch_ipx_set_driver(arg);
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if ((ipx_error=ipx_init(IPX_DEFAULT_SOCKET+socket))==0) {
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if (Inferno_verbose) printf( "%s %d.\n", TXT_IPX_CHANNEL, socket );
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Network_active = 1;
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} else {
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switch( ipx_error ) {
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case 3: if (Inferno_verbose) printf( "%s\n", TXT_NO_NETWORK); break;
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case -2: if (Inferno_verbose) printf( "%s 0x%x.\n", TXT_SOCKET_ERROR, IPX_DEFAULT_SOCKET+socket); break;
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case -4: if (Inferno_verbose) printf( "%s\n", TXT_MEMORY_IPX ); break;
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default:
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if (Inferno_verbose) printf( "%s %d", TXT_ERROR_IPX, ipx_error );
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}
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if (Inferno_verbose) printf( "%s\n",TXT_NETWORK_DISABLED);
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Network_active = 0; // Assume no network
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}
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ipx_read_user_file( "descent.usr" );
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ipx_read_network_file( "descent.net" );
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//if ( FindArg( "-dynamicsockets" ))
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// Network_allow_socket_changes = 1;
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//else
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// Network_allow_socket_changes = 0;
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} else {
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if (Inferno_verbose) printf( "%s\n", TXT_NETWORK_DISABLED);
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Network_active = 0; // Assume no network
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}
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return ipx_installed?0:-1;
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}
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int ipx_get_packet_data( ubyte * data )
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{
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if (driver->GetPacketData)
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return driver->GetPacketData(data);
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else {
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struct ipx_recv_data rd;
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char *buf;
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int size;
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if (driver->usepacketnum)
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buf=alloca(MAX_IPX_DATA);
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else
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buf=data;
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//edited 04/12/99 Matt Mueller - duh, we don't want to throw all that data away!
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while (driver->PacketReady()) {
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if ((size = driver->ReceivePacket(buf, MAX_IPX_DATA, &rd)) > 4) {
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if (!memcmp(rd.src_network, ipx_MyAddress, 10)) {
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mprintf((0,"dumped my own packet\n"));
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continue; /* don't get own pkts */
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}
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if (driver->usepacketnum){
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memcpy(data, buf + 4, size - 4);
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return size-4;
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}else{
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return size;
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}
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}
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}
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return 0;
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}
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}
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void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
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{
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if (driver->SendPacketData)
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driver->SendPacketData(data,datasize,network,address,immediate_address);
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else{
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IPXPacket_t ipx_header;
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memcpy(ipx_header.Destination.Network, network, 4);
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memcpy(ipx_header.Destination.Node, immediate_address, 6);
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// *(ushort *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
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ipx_header.PacketType = 4; /* Packet Exchange */
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if (driver->usepacketnum){
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ubyte buf[MAX_IPX_DATA];
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*(uint *)buf = ipx_packetnum++;
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memcpy(buf + 4, data, datasize);
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driver->SendPacket(&ipx_header, buf, datasize + 4);
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}else
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driver->SendPacket(&ipx_header, data, datasize);//we can save 4 bytes
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}
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}
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void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
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{
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if (driver->GetLocalTarget)
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driver->GetLocalTarget(server,node,local_target);
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else
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// let's hope Linux knows how to route it
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memcpy( local_target, node, 6 );
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}
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void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
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{
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int i, j;
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ubyte local_address[6];
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// Set to all networks besides mine
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for (i=0; i<Ipx_num_networks; i++ ) {
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if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
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ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast_addr, local_address );
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ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast_addr, local_address );
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} else {
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ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast_addr, broadcast_addr );
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}
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}
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//OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast_addr, broadcast_addr );
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// Send directly to all users not on my network or in the network list.
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for (i=0; i<Ipx_num_users; i++ ) {
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if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
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for (j=0; j<Ipx_num_networks; j++ ) {
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if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
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goto SkipUser;
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}
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ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
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SkipUser:
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j = 0;
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}
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}
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}
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// Sends a non-localized packet... needs 4 byte server, 6 byte address
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void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
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{
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ubyte local_address[6];
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if ( (*(uint *)server) != 0 ) {
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ipx_get_local_target( server, address, local_address );
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ipx_send_packet_data( data, datasize, server, address, local_address );
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} else {
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// Old method, no server info.
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ipx_send_packet_data( data, datasize, server, address, address );
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}
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}
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int ipx_check_ready_to_join(ubyte *server, ubyte *node){
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if (!driver->CheckReadyToJoin)
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return 1;
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return driver->CheckReadyToJoin(server,node);
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}
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int ipx_change_default_socket( ushort socket_number )
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{
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if ( !ipx_installed ) return -3;
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driver->CloseSocket();
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if (driver->OpenSocket(socket_number)) {
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return -3;
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}
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return 0;
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}
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void ipx_read_user_file(char * filename)
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{
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FILE * fp;
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user_address tmp;
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char temp_line[132], *p1;
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int n, ln=0, x;
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if (!filename) return;
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Ipx_num_users = 0;
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fp = fopen( filename, "rt" );
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if ( !fp ) return;
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printf( "Broadcast Users:\n" );
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while (fgets(temp_line, 132, fp)) {
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ln++;
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p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
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p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
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#if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
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if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
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for (n = 0; n < 4; n++) {
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if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
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break;
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tmp.network[n] = x;
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}
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if (n != 4)
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continue;
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for (n = 0; n < 6; n++) {
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if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
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break;
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tmp.node[n] = x;
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}
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if (n != 6)
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continue;
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} else
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continue;
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#else
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n = sscanf( temp_line, "%2x%2x%2x%2x/%2x%2x%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3], &tmp.node[0], &tmp.node[1], &tmp.node[2],&tmp.node[3], &tmp.node[4], &tmp.node[5] );
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if ( n != 10 ) continue;
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#endif
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if ( Ipx_num_users < MAX_USERS ) {
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ubyte * ipx_real_buffer = (ubyte *)&tmp;
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ipx_get_local_target( tmp.network, tmp.node, tmp.address );
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Ipx_users[Ipx_num_users++] = tmp;
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printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
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printf( "%02X%02X%02X%02X%02X%02X\n", ipx_real_buffer[4],ipx_real_buffer[5],ipx_real_buffer[6],ipx_real_buffer[7],ipx_real_buffer[8],ipx_real_buffer[9] );
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} else {
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printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
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fclose(fp);
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return;
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}
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}
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fclose(fp);
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}
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void ipx_read_network_file(char * filename)
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{
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FILE * fp;
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user_address tmp;
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char temp_line[132], *p1;
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int i, n, ln=0, x;
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if (!filename) return;
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fp = fopen( filename, "rt" );
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if ( !fp ) return;
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printf( "Using Networks:\n" );
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for (i=0; i<Ipx_num_networks; i++ ) {
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ubyte * n1 = (ubyte *)&Ipx_networks[i];
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printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
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}
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while (fgets(temp_line, 132, fp)) {
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ln++;
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p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
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p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
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#if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
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if (strlen(temp_line) >= 8) {
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for (n = 0; n < 4; n++) {
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if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
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break;
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tmp.network[n] = x;
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}
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if (n != 4)
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continue;
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} else
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continue;
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#else
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n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
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if ( n != 4 ) continue;
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#endif
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if ( Ipx_num_networks < MAX_NETWORKS ) {
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int j;
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for (j=0; j<Ipx_num_networks; j++ )
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if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
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break;
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if ( j >= Ipx_num_networks ) {
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memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
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printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
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}
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} else {
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printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );
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fclose(fp);
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return;
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}
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}
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fclose(fp);
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}
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