1 /* $Id: winnet.c,v 1.4 2002-08-31 03:16:35 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.
36 extern struct ipx_driver ipx_win;
38 #define MAX_IPX_DATA 576
41 ipx_socket_t ipx_socket_data;
42 ubyte ipx_installed=0;
43 ushort ipx_socket = 0;
45 ubyte ipx_MyAddress[10];
46 int ipx_packetnum = 0; /* Sequence number */
48 /* User defined routing stuff */
49 typedef struct user_address {
55 int Ipx_num_users = 0;
56 user_address Ipx_users[MAX_USERS];
58 #define MAX_NETWORKS 64
59 int Ipx_num_networks = 0;
60 uint Ipx_networks[MAX_NETWORKS];
64 int ipx_general_PacketReady(ipx_socket_t *s) {
70 tv.tv_sec = tv.tv_usec = 0;
71 if (select(FD_SETSIZE, &set, NULL, NULL, &tv) > 0)
77 struct ipx_driver *driver = &ipx_win;
79 ubyte * ipx_get_my_server_address()
81 return (ubyte *)&ipx_network;
84 ubyte * ipx_get_my_local_address()
86 return (ubyte *)(ipx_MyAddress + 4);
89 //---------------------------------------------------------------
90 // Initializes all IPX internals.
91 // If socket_number==0, then opens next available socket.
92 // Returns: 0 if successful.
93 // -1 if socket already open.
94 // -2 if socket table full.
95 // -3 if IPX not installed.
96 // -4 if couldn't allocate low dos memory
97 // -5 if error with getting internetwork address
98 int ipx_init( int socket_number, int show_address )
102 WORD wVersionRequested;
105 wVersionRequested = MAKEWORD(2, 0);
106 if (WSAStartup( wVersionRequested, &wsaData))
112 if ( LOBYTE( wsaData.wVersion ) != 2 ||
113 HIBYTE( wsaData.wVersion ) != 0 ) {
114 /* We couldn't find a usable WinSock DLL. */
120 printf("Using real IPX for network games\n");
122 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
123 unsigned long n = strtol(Args[i + 1], NULL, 16);
124 ipx_MyAddress[0] = (unsigned char)n >> 24; ipx_MyAddress[1] = (unsigned char)(n >> 16) & 255;
125 ipx_MyAddress[2] = (unsigned char)(n >> 8) & 255; ipx_MyAddress[3] = (unsigned char)n & 255;
126 printf("IPX: Using network %08x\n", (int) n);
128 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
131 driver->GetMyAddress();
132 memcpy(&ipx_network, ipx_MyAddress, 4);
133 Ipx_num_networks = 0;
134 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
137 printf("ipx succesfully installed\n");
145 driver->CloseSocket(&ipx_socket_data);
150 int ipx_get_packet_data( ubyte * data )
152 struct ipx_recv_data rd;
153 char buf[MAX_IPX_DATA];
159 // Like the original, only take latest packet, throw away rest
160 while (driver->PacketReady(&ipx_socket_data)) {
162 driver->ReceivePacket(&ipx_socket_data, buf,
163 sizeof(buf), &rd)) > 4) {
164 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
165 continue; /* don't get own pkts */
166 pkt_num = *(uint *)buf;
167 if (pkt_num >= best_id) {
168 memcpy(data, buf + 4, size - 4);
170 best_size = size - 4;
177 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
179 u_char buf[MAX_IPX_DATA];
180 IPXPacket_t ipx_header;
182 memcpy(ipx_header.Destination.Network, network, 4);
183 memcpy(ipx_header.Destination.Node, immediate_address, 6);
184 *(u_short *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
185 ipx_header.PacketType = 4; /* Packet Exchange */
186 *(uint *)buf = ipx_packetnum++;
187 memcpy(buf + 4, data, datasize);
188 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
191 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
193 // let's hope Linux knows how to route it
194 memcpy( local_target, node, 6 );
197 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
200 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
201 ubyte local_address[6];
203 // Set to all networks besides mine
204 for (i=0; i<Ipx_num_networks; i++ ) {
205 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
206 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
207 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
209 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
213 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
215 // Send directly to all users not on my network or in the network list.
216 for (i=0; i<Ipx_num_users; i++ ) {
217 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
218 for (j=0; j<Ipx_num_networks; j++ ) {
219 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
222 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
229 // Sends a non-localized packet... needs 4 byte server, 6 byte address
230 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
232 ubyte local_address[6];
234 if ( (*(uint *)server) != 0 ) {
235 ipx_get_local_target( server, address, local_address );
236 ipx_send_packet_data( data, datasize, server, address, local_address );
238 // Old method, no server info.
239 ipx_send_packet_data( data, datasize, server, address, address );
243 int ipx_change_default_socket( ushort socket_number )
245 if ( !ipx_installed ) return -3;
247 driver->CloseSocket(&ipx_socket_data);
248 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
254 void ipx_read_user_file(char * filename)
258 char temp_line[132], *p1;
261 if (!filename) return;
265 fp = fopen( filename, "rt" );
268 printf( "Broadcast Users:\n" );
270 while (fgets(temp_line, 132, fp)) {
272 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
273 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
274 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
275 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
276 for (n = 0; n < 4; n++) {
277 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
283 for (n = 0; n < 6; n++) {
284 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
293 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] );
294 if ( n != 10 ) continue;
296 if ( Ipx_num_users < MAX_USERS ) {
297 ubyte * ipx_real_buffer = (ubyte *)&tmp;
298 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
299 Ipx_users[Ipx_num_users++] = tmp;
300 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
301 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] );
303 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
312 void ipx_read_network_file(char * filename)
316 char temp_line[132], *p1;
319 if (!filename) return;
321 fp = fopen( filename, "rt" );
324 printf( "Using Networks:\n" );
325 for (i=0; i<Ipx_num_networks; i++ ) {
326 ubyte * n1 = (ubyte *)&Ipx_networks[i];
327 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
330 while (fgets(temp_line, 132, fp)) {
332 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
333 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
334 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
335 if (strlen(temp_line) >= 8) {
336 for (n = 0; n < 4; n++) {
337 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
346 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
347 if ( n != 4 ) continue;
349 if ( Ipx_num_networks < MAX_NETWORKS ) {
351 for (j=0; j<Ipx_num_networks; j++ )
352 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
354 if ( j >= Ipx_num_networks ) {
355 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
356 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
359 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );