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16 * Linux lower-level network code.
17 * implements functions declared in include/ipx.h
30 #include <sys/types.h>
32 #include <netinet/in.h> /* for htons & co. */
47 #include "ipx_mcast4.h"
49 #include "../../main/player.h" /* for Players */
50 #include "../../main/multi.h" /* for NetPlayers */
51 //added 05/17/99 Matt Mueller - needed to redefine FD_* so that no asm is used
52 //#include "checker.h"
56 #define MAX_IPX_DATA 576
59 ipx_socket_t ipx_socket_data;
60 ubyte ipx_installed=0;
61 ushort ipx_socket = 0;
63 ubyte ipx_MyAddress[10];
64 int ipx_packetnum = 0; /* Sequence number */
65 //int ipx_packettotal=0,ipx_lastspeed=0;
67 /* User defined routing stuff */
68 typedef struct user_address {
74 int Ipx_num_users = 0;
75 user_address Ipx_users[MAX_USERS];
77 #define MAX_NETWORKS 64
78 int Ipx_num_networks = 0;
79 uint Ipx_networks[MAX_NETWORKS];
81 int ipx_general_PacketReady(ipx_socket_t *s) {
87 tv.tv_sec = tv.tv_usec = 0;
88 if (select(s->fd + 1, &set, NULL, NULL, &tv) > 0)
94 struct ipx_driver *driver = &ipx_udp;
96 ubyte * ipx_get_my_server_address()
98 return (ubyte *)&ipx_network;
101 ubyte * ipx_get_my_local_address()
103 return (ubyte *)(ipx_MyAddress + 4);
106 void arch_ipx_set_driver(int ipx_driver)
110 case IPX_DRIVER_IPX: driver = &ipx_bsd; break;
113 case IPX_DRIVER_KALI: driver = &ipx_kali; break;
115 case IPX_DRIVER_UDP: driver = &ipx_udp; break;
116 case IPX_DRIVER_MCAST4: driver = &ipx_mcast4; break;
121 int ipx_init(int socket_number)
125 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
126 unsigned long n = strtol(Args[i + 1], NULL, 16);
127 ipx_MyAddress[0] = n >> 24; ipx_MyAddress[1] = (n >> 16) & 255;
128 ipx_MyAddress[2] = (n >> 8) & 255; ipx_MyAddress[3] = n & 255;
129 printf("IPX: Using network %08x\n", (unsigned int)n);
131 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
132 return IPX_NOT_INSTALLED;
134 driver->GetMyAddress();
135 memcpy(&ipx_network, ipx_MyAddress, 4);
136 Ipx_num_networks = 0;
137 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
146 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];
154 //killed 6-15-99 to get rid of compile warnings - OE
160 //edited 04/12/99 Matt Mueller - duh, we don't want to throw all that data away!
161 //--killed-- Like the original, only take latest packet, throw away rest
162 //do _NOT_ throw them away!
163 while (driver->PacketReady(&ipx_socket_data)) {
165 driver->ReceivePacket(&ipx_socket_data, buf,
166 sizeof(buf), &rd)) > 4) {
167 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
168 continue; /* don't get own pkts */
169 //--killed-- pkt_num = INTEL_INT(*(uint *)buf);
170 //--killed-- if (pkt_num >= best_id) {
171 memcpy(data, buf + 4, size - 4);
173 //--killed-- best_id = pkt_num;
174 //--killed-- best_size = size - 4;
182 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
184 u_char buf[MAX_IPX_DATA];
185 IPXPacket_t ipx_header;
187 Assert(datasize <= MAX_IPX_DATA+4);
189 memcpy(ipx_header.Destination.Network, network, 4);
190 memcpy(ipx_header.Destination.Node, immediate_address, 6);
191 *(u_short *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
192 ipx_header.PacketType = 4; /* Packet Exchange */
193 *(uint *)buf = INTEL_INT(ipx_packetnum);
195 //ipx_packettotal+=datasize+4;
196 //if (f2i(Players[Player_num].time_level) && (f2i(Players[Player_num].time_level)%10!=ipx_lastspeed))
198 // ipx_lastspeed=f2i(Players[Player_num].time_level)%10;
199 // printf("tot=%i,t2=%i,time=%i,avg=%i,a2=%i\n",ipx_packetnum,ipx_packettotal,(int)f2i(Players[Player_num].time_level),
200 // ipx_packetnum/(int)f2i(Players[Player_num].time_level),
201 // ipx_packettotal/(int)f2i(Players[Player_num].time_level));
203 memcpy(buf + 4, data, datasize);
204 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
207 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
209 // let's hope Linux knows how to route it
210 memcpy( local_target, node, 6 );
213 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
216 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
217 ubyte local_address[6];
219 // Set to all networks besides mine
220 for (i=0; i<Ipx_num_networks; i++ ) {
221 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
222 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
223 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
225 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
229 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
231 // Send directly to all users not on my network or in the network list.
232 for (i=0; i<Ipx_num_users; i++ ) {
233 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
234 for (j=0; j<Ipx_num_networks; j++ ) {
235 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
238 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
245 // Sends a non-localized packet... needs 4 byte server, 6 byte address
246 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
248 ubyte local_address[6];
250 #ifdef WORDS_NEED_ALIGNMENT
252 if (memcmp(server, &zero, 4)) {
253 #else // WORDS_NEED_ALIGNMENT
254 if ((*(uint *)server) != 0) {
255 #endif // WORDS_NEED_ALIGNMENT
256 ipx_get_local_target( server, address, local_address );
257 ipx_send_packet_data( data, datasize, server, address, local_address );
259 // Old method, no server info.
260 ipx_send_packet_data( data, datasize, server, address, address );
264 int ipx_change_default_socket( ushort socket_number )
266 if ( !ipx_installed ) return -3;
268 driver->CloseSocket(&ipx_socket_data);
269 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
275 void ipx_read_user_file(char * filename)
279 char temp_line[132], *p1;
282 if (!filename) return;
286 fp = fopen( filename, "rt" );
289 printf( "Broadcast Users:\n" );
291 while (fgets(temp_line, 132, fp)) {
293 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
294 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
295 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
296 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
297 for (n = 0; n < 4; n++) {
298 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
304 for (n = 0; n < 6; n++) {
305 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
314 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] );
315 if ( n != 10 ) continue;
317 if ( Ipx_num_users < MAX_USERS ) {
318 ubyte * ipx_real_buffer = (ubyte *)&tmp;
319 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
320 Ipx_users[Ipx_num_users++] = tmp;
321 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
322 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] );
324 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
333 void ipx_read_network_file(char * filename)
337 char temp_line[132], *p1;
340 if (!filename) return;
342 fp = fopen( filename, "rt" );
345 printf( "Using Networks:\n" );
346 for (i=0; i<Ipx_num_networks; i++ ) {
347 ubyte * n1 = (ubyte *)&Ipx_networks[i];
348 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
351 while (fgets(temp_line, 132, fp)) {
353 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
354 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
355 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
356 if (strlen(temp_line) >= 8) {
357 for (n = 0; n < 4; n++) {
358 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
367 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
368 if ( n != 4 ) continue;
370 if ( Ipx_num_networks < MAX_NETWORKS ) {
372 for (j=0; j<Ipx_num_networks; j++ )
373 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
375 if ( j >= Ipx_num_networks ) {
376 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
377 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
380 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );
388 // Initalizes the protocol-specific member of the netgame packet.
389 void ipx_init_netgame_aux_data(ubyte buf[])
391 if(driver->InitNetgameAuxData)
392 driver->InitNetgameAuxData(&ipx_socket_data, buf);
395 // Handles the protocol-specific member of the netgame packet.
396 int ipx_handle_netgame_aux_data(const ubyte buf[])
398 if(driver->HandleNetgameAuxData)
399 return driver->HandleNetgameAuxData(&ipx_socket_data, buf);
403 // Notifies the protocol that we're done with a particular game
404 void ipx_handle_leave_game()
406 if(driver->HandleLeaveGame)
407 driver->HandleLeaveGame(&ipx_socket_data);
410 // Send a packet to every member of the game.
411 int ipx_send_game_packet(ubyte *data, int datasize)
413 if(driver->SendGamePacket) {
414 u_char buf[MAX_IPX_DATA];
416 *(uint *)buf = ipx_packetnum++;
417 memcpy(buf + 4, data, datasize);
418 *(uint *)data = ipx_packetnum++;
419 return driver->SendGamePacket(&ipx_socket_data, buf, datasize + 4);
421 // Loop through all the players unicasting the packet.
424 //printf("Sending game packet: N_players = %i\n", N_players);
426 for(i=0; i<N_players; i++) {
427 if(Players[i].connected && (i != Player_num))
428 ipx_send_packet_data(data, datasize, NetPlayers.players[i].network.ipx.server, NetPlayers.players[i].network.ipx.node,Players[i].net_address);