1 /* $Id: linuxnet.c,v 1.7 2003-01-01 00:56:24 btb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
29 #include <sys/types.h>
31 #include <netinet/in.h> /* for htons & co. */
41 //added 05/17/99 Matt Mueller - needed to redefine FD_* so that no asm is used
42 //#include "checker.h"
44 #define MAX_IPX_DATA 576
47 ipx_socket_t ipx_socket_data;
48 ubyte ipx_installed=0;
49 ushort ipx_socket = 0;
51 ubyte ipx_MyAddress[10];
52 int ipx_packetnum = 0; /* Sequence number */
53 //int ipx_packettotal=0,ipx_lastspeed=0;
55 /* User defined routing stuff */
56 typedef struct user_address {
62 int Ipx_num_users = 0;
63 user_address Ipx_users[MAX_USERS];
65 #define MAX_NETWORKS 64
66 int Ipx_num_networks = 0;
67 uint Ipx_networks[MAX_NETWORKS];
71 int ipx_general_PacketReady(ipx_socket_t *s) {
77 tv.tv_sec = tv.tv_usec = 0;
78 if (select(s->fd + 1, &set, NULL, NULL, &tv) > 0)
84 struct ipx_driver *driver = &ipx_bsd;
86 ubyte * ipx_get_my_server_address()
88 return (ubyte *)&ipx_network;
91 ubyte * ipx_get_my_local_address()
93 return (ubyte *)(ipx_MyAddress + 4);
96 //---------------------------------------------------------------
97 // Initializes all IPX internals.
98 // If socket_number==0, then opens next available socket.
99 // Returns: 0 if successful.
100 // -1 if socket already open.
101 // -2 if socket table full.
102 // -3 if IPX not installed.
103 // -4 if couldn't allocate low dos memory
104 // -5 if error with getting internetwork address
105 int ipx_init( int socket_number, int show_address )
109 if (FindArg("-kali")) {
110 printf("Using Kali for network games\n");
112 //added on 12/20/98 by Jan Kratochvil for direct TCP/IP games
113 } else if (FindArg("-udp")) {
114 printf("Using native TCP/IP (UDP) for network games\n");
116 //end this section addition - JK
118 printf("Using real IPX for network games\n");
121 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
122 unsigned long n = strtol(Args[i + 1], NULL, 16);
123 ipx_MyAddress[0] = n >> 24; ipx_MyAddress[1] = (n >> 16) & 255;
124 ipx_MyAddress[2] = (n >> 8) & 255; ipx_MyAddress[3] = n & 255;
125 printf("IPX: Using network %08x\n", (unsigned int)n);
127 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
130 driver->GetMyAddress();
131 memcpy(&ipx_network, ipx_MyAddress, 4);
132 Ipx_num_networks = 0;
133 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
142 driver->CloseSocket(&ipx_socket_data);
146 int ipx_get_packet_data( ubyte * data )
148 struct ipx_recv_data rd;
149 char buf[MAX_IPX_DATA];
150 //killed 6-15-99 to get rid of compile warnings - OE
156 //edited 04/12/99 Matt Mueller - duh, we don't want to throw all that data away!
157 //--killed-- Like the original, only take latest packet, throw away rest
158 //do _NOT_ throw them away!
159 while (driver->PacketReady(&ipx_socket_data)) {
161 driver->ReceivePacket(&ipx_socket_data, buf,
162 sizeof(buf), &rd)) > 4) {
163 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
164 continue; /* don't get own pkts */
165 //--killed-- pkt_num = *(uint *)buf;
166 //--killed-- if (pkt_num >= best_id) {
167 memcpy(data, buf + 4, size - 4);
169 //--killed-- best_id = pkt_num;
170 //--killed-- best_size = size - 4;
178 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
180 u_char buf[MAX_IPX_DATA];
181 IPXPacket_t ipx_header;
183 memcpy(ipx_header.Destination.Network, network, 4);
184 memcpy(ipx_header.Destination.Node, immediate_address, 6);
185 *(u_short *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
186 ipx_header.PacketType = 4; /* Packet Exchange */
187 *(uint *)buf = ipx_packetnum++;
188 //ipx_packettotal+=datasize+4;
189 //if (f2i(Players[Player_num].time_level) && (f2i(Players[Player_num].time_level)%10!=ipx_lastspeed))
191 // ipx_lastspeed=f2i(Players[Player_num].time_level)%10;
192 // printf("tot=%i,t2=%i,time=%i,avg=%i,a2=%i\n",ipx_packetnum,ipx_packettotal,(int)f2i(Players[Player_num].time_level),
193 // ipx_packetnum/(int)f2i(Players[Player_num].time_level),
194 // ipx_packettotal/(int)f2i(Players[Player_num].time_level));
196 memcpy(buf + 4, data, datasize);
197 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
200 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
202 // let's hope Linux knows how to route it
203 memcpy( local_target, node, 6 );
206 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
209 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
210 ubyte local_address[6];
212 // Set to all networks besides mine
213 for (i=0; i<Ipx_num_networks; i++ ) {
214 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
215 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
216 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
218 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
222 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
224 // Send directly to all users not on my network or in the network list.
225 for (i=0; i<Ipx_num_users; i++ ) {
226 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
227 for (j=0; j<Ipx_num_networks; j++ ) {
228 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
231 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
238 // Sends a non-localized packet... needs 4 byte server, 6 byte address
239 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
241 ubyte local_address[6];
243 if ( (*(uint *)server) != 0 ) {
244 ipx_get_local_target( server, address, local_address );
245 ipx_send_packet_data( data, datasize, server, address, local_address );
247 // Old method, no server info.
248 ipx_send_packet_data( data, datasize, server, address, address );
252 int ipx_change_default_socket( ushort socket_number )
254 if ( !ipx_installed ) return -3;
256 driver->CloseSocket(&ipx_socket_data);
257 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
263 void ipx_read_user_file(char * filename)
267 char temp_line[132], *p1;
270 if (!filename) return;
274 fp = fopen( filename, "rt" );
277 printf( "Broadcast Users:\n" );
279 while (fgets(temp_line, 132, fp)) {
281 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
282 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
283 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
284 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
285 for (n = 0; n < 4; n++) {
286 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
292 for (n = 0; n < 6; n++) {
293 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
302 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] );
303 if ( n != 10 ) continue;
305 if ( Ipx_num_users < MAX_USERS ) {
306 ubyte * ipx_real_buffer = (ubyte *)&tmp;
307 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
308 Ipx_users[Ipx_num_users++] = tmp;
309 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
310 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] );
312 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
321 void ipx_read_network_file(char * filename)
325 char temp_line[132], *p1;
328 if (!filename) return;
330 fp = fopen( filename, "rt" );
333 printf( "Using Networks:\n" );
334 for (i=0; i<Ipx_num_networks; i++ ) {
335 ubyte * n1 = (ubyte *)&Ipx_networks[i];
336 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
339 while (fgets(temp_line, 132, fp)) {
341 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
342 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
343 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
344 if (strlen(temp_line) >= 8) {
345 for (n = 0; n < 4; n++) {
346 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
355 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
356 if ( n != 4 ) continue;
358 if ( Ipx_num_networks < MAX_NETWORKS ) {
360 for (j=0; j<Ipx_num_networks; j++ )
361 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
363 if ( j >= Ipx_num_networks ) {
364 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
365 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
368 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );