1 /* $Id: winnet.c,v 1.5 2003-02-28 23:34:15 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.
33 extern struct ipx_driver ipx_win;
35 #define MAX_IPX_DATA 576
38 ipx_socket_t ipx_socket_data;
39 ubyte ipx_installed=0;
40 ushort ipx_socket = 0;
42 ubyte ipx_MyAddress[10];
43 int ipx_packetnum = 0; /* Sequence number */
45 /* User defined routing stuff */
46 typedef struct user_address {
52 int Ipx_num_users = 0;
53 user_address Ipx_users[MAX_USERS];
55 #define MAX_NETWORKS 64
56 int Ipx_num_networks = 0;
57 uint Ipx_networks[MAX_NETWORKS];
61 int ipx_general_PacketReady(ipx_socket_t *s) {
67 tv.tv_sec = tv.tv_usec = 0;
68 if (select(FD_SETSIZE, &set, NULL, NULL, &tv) > 0)
74 struct ipx_driver *driver = &ipx_win;
76 ubyte * ipx_get_my_server_address()
78 return (ubyte *)&ipx_network;
81 ubyte * ipx_get_my_local_address()
83 return (ubyte *)(ipx_MyAddress + 4);
86 //---------------------------------------------------------------
87 // Initializes all IPX internals.
88 // If socket_number==0, then opens next available socket.
89 // Returns: 0 if successful.
90 // -1 if socket already open.
91 // -2 if socket table full.
92 // -3 if IPX not installed.
93 // -4 if couldn't allocate low dos memory
94 // -5 if error with getting internetwork address
95 int ipx_init( int socket_number, int show_address )
99 WORD wVersionRequested;
102 wVersionRequested = MAKEWORD(2, 0);
103 if (WSAStartup( wVersionRequested, &wsaData))
109 if ( LOBYTE( wsaData.wVersion ) != 2 ||
110 HIBYTE( wsaData.wVersion ) != 0 ) {
111 /* We couldn't find a usable WinSock DLL. */
117 printf("Using real IPX for network games\n");
119 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
120 unsigned long n = strtol(Args[i + 1], NULL, 16);
121 ipx_MyAddress[0] = (unsigned char)n >> 24; ipx_MyAddress[1] = (unsigned char)(n >> 16) & 255;
122 ipx_MyAddress[2] = (unsigned char)(n >> 8) & 255; ipx_MyAddress[3] = (unsigned char)n & 255;
123 printf("IPX: Using network %08x\n", (int) n);
125 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
128 driver->GetMyAddress();
129 memcpy(&ipx_network, ipx_MyAddress, 4);
130 Ipx_num_networks = 0;
131 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
134 printf("ipx succesfully installed\n");
142 driver->CloseSocket(&ipx_socket_data);
147 int ipx_get_packet_data( ubyte * data )
149 struct ipx_recv_data rd;
150 char buf[MAX_IPX_DATA];
156 // Like the original, only take latest packet, throw away rest
157 while (driver->PacketReady(&ipx_socket_data)) {
159 driver->ReceivePacket(&ipx_socket_data, buf,
160 sizeof(buf), &rd)) > 4) {
161 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
162 continue; /* don't get own pkts */
163 pkt_num = *(uint *)buf;
164 if (pkt_num >= best_id) {
165 memcpy(data, buf + 4, size - 4);
167 best_size = size - 4;
174 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
176 u_char buf[MAX_IPX_DATA];
177 IPXPacket_t ipx_header;
179 memcpy(ipx_header.Destination.Network, network, 4);
180 memcpy(ipx_header.Destination.Node, immediate_address, 6);
181 *(u_short *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
182 ipx_header.PacketType = 4; /* Packet Exchange */
183 *(uint *)buf = ipx_packetnum++;
184 memcpy(buf + 4, data, datasize);
185 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
188 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
190 // let's hope Linux knows how to route it
191 memcpy( local_target, node, 6 );
194 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
197 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
198 ubyte local_address[6];
200 // Set to all networks besides mine
201 for (i=0; i<Ipx_num_networks; i++ ) {
202 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
203 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
204 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
206 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
210 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
212 // Send directly to all users not on my network or in the network list.
213 for (i=0; i<Ipx_num_users; i++ ) {
214 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
215 for (j=0; j<Ipx_num_networks; j++ ) {
216 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
219 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
226 // Sends a non-localized packet... needs 4 byte server, 6 byte address
227 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
229 ubyte local_address[6];
231 if ( (*(uint *)server) != 0 ) {
232 ipx_get_local_target( server, address, local_address );
233 ipx_send_packet_data( data, datasize, server, address, local_address );
235 // Old method, no server info.
236 ipx_send_packet_data( data, datasize, server, address, address );
240 int ipx_change_default_socket( ushort socket_number )
242 if ( !ipx_installed ) return -3;
244 driver->CloseSocket(&ipx_socket_data);
245 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
251 void ipx_read_user_file(char * filename)
255 char temp_line[132], *p1;
258 if (!filename) return;
262 fp = fopen( filename, "rt" );
265 printf( "Broadcast Users:\n" );
267 while (fgets(temp_line, 132, fp)) {
269 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
270 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
271 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
272 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
273 for (n = 0; n < 4; n++) {
274 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
280 for (n = 0; n < 6; n++) {
281 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
290 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] );
291 if ( n != 10 ) continue;
293 if ( Ipx_num_users < MAX_USERS ) {
294 ubyte * ipx_real_buffer = (ubyte *)&tmp;
295 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
296 Ipx_users[Ipx_num_users++] = tmp;
297 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
298 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] );
300 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
309 void ipx_read_network_file(char * filename)
313 char temp_line[132], *p1;
316 if (!filename) return;
318 fp = fopen( filename, "rt" );
321 printf( "Using Networks:\n" );
322 for (i=0; i<Ipx_num_networks; i++ ) {
323 ubyte * n1 = (ubyte *)&Ipx_networks[i];
324 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
327 while (fgets(temp_line, 132, fp)) {
329 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
330 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
331 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
332 if (strlen(temp_line) >= 8) {
333 for (n = 0; n < 4; n++) {
334 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
343 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
344 if ( n != 4 ) continue;
346 if ( Ipx_num_networks < MAX_NETWORKS ) {
348 for (j=0; j<Ipx_num_networks; j++ )
349 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
351 if ( j >= Ipx_num_networks ) {
352 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
353 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
356 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );