2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
3 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
6 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
8 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
11 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
16 * Linux lower-level network code.
17 * implements functions declared in include/ipx.h
30 #include <sys/types.h>
36 #include <netinet/in.h> /* for htons & co. */
52 #include "ipx_mcast4.h"
55 //added 05/17/99 Matt Mueller - needed to redefine FD_* so that no asm is used
56 //#include "checker.h"
62 extern struct ipx_driver ipx_win;
65 #define MAX_IPX_DATA 576
68 ipx_socket_t ipx_socket_data;
69 ubyte ipx_installed=0;
70 ushort ipx_socket = 0;
72 ubyte ipx_MyAddress[10];
73 int ipx_packetnum = 0; /* Sequence number */
74 //int ipx_packettotal=0,ipx_lastspeed=0;
76 /* User defined routing stuff */
77 typedef struct user_address {
83 int Ipx_num_users = 0;
84 user_address Ipx_users[MAX_USERS];
86 #define MAX_NETWORKS 64
87 int Ipx_num_networks = 0;
88 uint Ipx_networks[MAX_NETWORKS];
90 int ipx_general_PacketReady(ipx_socket_t *s) {
96 tv.tv_sec = tv.tv_usec = 0;
97 if (select(s->fd + 1, &set, NULL, NULL, &tv) > 0)
103 struct ipx_driver *driver = &ipx_udp;
105 ubyte * ipx_get_my_server_address()
107 return (ubyte *)&ipx_network;
110 ubyte * ipx_get_my_local_address()
112 return (ubyte *)(ipx_MyAddress + 4);
115 void arch_ipx_set_driver(int ipx_driver)
119 case IPX_DRIVER_IPX: driver = &ipx_win; break;
122 case IPX_DRIVER_IPX: driver = &ipx_bsd; break;
126 case IPX_DRIVER_KALI: driver = &ipx_kali; break;
128 case IPX_DRIVER_UDP: driver = &ipx_udp; break;
129 case IPX_DRIVER_MCAST4: driver = &ipx_mcast4; break;
134 int ipx_init(int socket_number)
138 WORD wVersionRequested;
141 wVersionRequested = MAKEWORD(2, 0);
142 if (WSAStartup( wVersionRequested, &wsaData))
144 return IPX_SOCKET_ALREADY_OPEN;
148 if ( LOBYTE( wsaData.wVersion ) != 2 ||
149 HIBYTE( wsaData.wVersion ) != 0 ) {
150 /* We couldn't find a usable WinSock DLL. */
152 return IPX_SOCKET_TABLE_FULL;
157 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
158 unsigned long n = strtol(Args[i + 1], NULL, 16);
159 ipx_MyAddress[0] = n >> 24; ipx_MyAddress[1] = (n >> 16) & 255;
160 ipx_MyAddress[2] = (n >> 8) & 255; ipx_MyAddress[3] = n & 255;
161 printf("IPX: Using network %08x\n", (unsigned int)n);
163 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
164 return IPX_NOT_INSTALLED;
166 driver->GetMyAddress();
167 memcpy(&ipx_network, ipx_MyAddress, 4);
168 Ipx_num_networks = 0;
169 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
182 driver->CloseSocket(&ipx_socket_data);
187 int ipx_get_packet_data( ubyte * data )
189 struct ipx_recv_data rd;
190 char buf[MAX_IPX_DATA];
191 //killed 6-15-99 to get rid of compile warnings - OE
197 //edited 04/12/99 Matt Mueller - duh, we don't want to throw all that data away!
198 //--killed-- Like the original, only take latest packet, throw away rest
199 //do _NOT_ throw them away!
200 while (driver->PacketReady(&ipx_socket_data)) {
202 driver->ReceivePacket(&ipx_socket_data, buf,
203 sizeof(buf), &rd)) > 4) {
204 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
205 continue; /* don't get own pkts */
206 //--killed-- pkt_num = INTEL_INT(*(uint *)buf);
207 //--killed-- if (pkt_num >= best_id) {
208 memcpy(data, buf + 4, size - 4);
210 //--killed-- best_id = pkt_num;
211 //--killed-- best_size = size - 4;
219 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
221 u_char buf[MAX_IPX_DATA];
222 IPXPacket_t ipx_header;
224 Assert(datasize <= MAX_IPX_DATA+4);
226 memcpy(ipx_header.Destination.Network, network, 4);
227 memcpy(ipx_header.Destination.Node, immediate_address, 6);
229 u_short socket = htons(ipx_socket_data.socket);
230 memcpy(ipx_header.Destination.Socket, &socket, 2);
232 ipx_header.PacketType = 4; /* Packet Exchange */
234 int packetnum = INTEL_INT(ipx_packetnum);
235 memcpy(buf, &packetnum, 4);
238 //ipx_packettotal+=datasize+4;
239 //if (f2i(Players[Player_num].time_level) && (f2i(Players[Player_num].time_level)%10!=ipx_lastspeed))
241 // ipx_lastspeed=f2i(Players[Player_num].time_level)%10;
242 // printf("tot=%i,t2=%i,time=%i,avg=%i,a2=%i\n",ipx_packetnum,ipx_packettotal,(int)f2i(Players[Player_num].time_level),
243 // ipx_packetnum/(int)f2i(Players[Player_num].time_level),
244 // ipx_packettotal/(int)f2i(Players[Player_num].time_level));
246 memcpy(buf + 4, data, datasize);
247 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
250 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
252 // let's hope Linux knows how to route it
253 memcpy( local_target, node, 6 );
256 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
259 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
260 ubyte local_address[6];
262 // Set to all networks besides mine
263 for (i=0; i<Ipx_num_networks; i++ ) {
264 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
265 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
266 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
268 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
272 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
274 // Send directly to all users not on my network or in the network list.
275 for (i=0; i<Ipx_num_users; i++ ) {
276 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
277 for (j=0; j<Ipx_num_networks; j++ ) {
278 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
281 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
288 // Sends a non-localized packet... needs 4 byte server, 6 byte address
289 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
291 ubyte local_address[6];
293 #ifdef WORDS_NEED_ALIGNMENT
295 if (memcmp(server, &zero, 4)) {
296 #else // WORDS_NEED_ALIGNMENT
297 if ((*(uint *)server) != 0) {
298 #endif // WORDS_NEED_ALIGNMENT
299 ipx_get_local_target( server, address, local_address );
300 ipx_send_packet_data( data, datasize, server, address, local_address );
302 // Old method, no server info.
303 ipx_send_packet_data( data, datasize, server, address, address );
307 int ipx_change_default_socket( ushort socket_number )
309 if ( !ipx_installed ) return -3;
311 driver->CloseSocket(&ipx_socket_data);
312 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
318 void ipx_read_user_file(char * filename)
322 char temp_line[132], *p1;
325 if (!filename) return;
329 fp = fopen( filename, "rt" );
332 printf( "Broadcast Users:\n" );
334 while (fgets(temp_line, 132, fp)) {
336 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
337 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
338 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
339 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
340 for (n = 0; n < 4; n++) {
341 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
347 for (n = 0; n < 6; n++) {
348 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
357 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] );
358 if ( n != 10 ) continue;
360 if ( Ipx_num_users < MAX_USERS ) {
361 ubyte * ipx_real_buffer = (ubyte *)&tmp;
362 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
363 Ipx_users[Ipx_num_users++] = tmp;
364 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
365 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] );
367 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
376 void ipx_read_network_file(char * filename)
380 char temp_line[132], *p1;
383 if (!filename) return;
385 fp = fopen( filename, "rt" );
388 printf( "Using Networks:\n" );
389 for (i=0; i<Ipx_num_networks; i++ ) {
390 ubyte * n1 = (ubyte *)&Ipx_networks[i];
391 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
394 while (fgets(temp_line, 132, fp)) {
396 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
397 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
398 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
399 if (strlen(temp_line) >= 8) {
400 for (n = 0; n < 4; n++) {
401 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
410 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
411 if ( n != 4 ) continue;
413 if ( Ipx_num_networks < MAX_NETWORKS ) {
415 for (j=0; j<Ipx_num_networks; j++ )
416 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
418 if ( j >= Ipx_num_networks ) {
419 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
420 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
423 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );
431 // Initalizes the protocol-specific member of the netgame packet.
432 void ipx_init_netgame_aux_data(ubyte buf[])
434 if(driver->InitNetgameAuxData)
435 driver->InitNetgameAuxData(&ipx_socket_data, buf);
438 // Handles the protocol-specific member of the netgame packet.
439 int ipx_handle_netgame_aux_data(const ubyte buf[])
441 if(driver->HandleNetgameAuxData)
442 return driver->HandleNetgameAuxData(&ipx_socket_data, buf);
446 // Notifies the protocol that we're done with a particular game
447 void ipx_handle_leave_game()
449 if(driver->HandleLeaveGame)
450 driver->HandleLeaveGame(&ipx_socket_data);
453 // Send a packet to every member of the game.
454 int ipx_send_game_packet(ubyte *data, int datasize)
456 if(driver->SendGamePacket) {
457 u_char buf[MAX_IPX_DATA];
459 memcpy(buf, &ipx_packetnum, 4);
461 memcpy(buf + 4, data, datasize);
462 *(uint *)data = ipx_packetnum++;
463 return driver->SendGamePacket(&ipx_socket_data, buf, datasize + 4);
465 // Loop through all the players unicasting the packet.
468 //printf("Sending game packet: N_players = %i\n", N_players);
470 for(i=0; i<N_players; i++) {
471 if(Players[i].connected && (i != Player_num))
472 ipx_send_packet_data(data, datasize, NetPlayers.players[i].network.ipx.server, NetPlayers.players[i].network.ipx.node,Players[i].net_address);