1 /* $Id: linuxnet.c,v 1.11 2003-10-10 09:36:34 btb Exp $ */
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12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Linux lower-level network code.
18 * implements functions declared in include/ipx.h
30 #include <sys/types.h>
32 #include <netinet/in.h> /* for htons & co. */
45 //added 05/17/99 Matt Mueller - needed to redefine FD_* so that no asm is used
46 //#include "checker.h"
50 #define MAX_IPX_DATA 576
53 ipx_socket_t ipx_socket_data;
54 ubyte ipx_installed=0;
55 ushort ipx_socket = 0;
57 ubyte ipx_MyAddress[10];
58 int ipx_packetnum = 0; /* Sequence number */
59 //int ipx_packettotal=0,ipx_lastspeed=0;
61 /* User defined routing stuff */
62 typedef struct user_address {
68 int Ipx_num_users = 0;
69 user_address Ipx_users[MAX_USERS];
71 #define MAX_NETWORKS 64
72 int Ipx_num_networks = 0;
73 uint Ipx_networks[MAX_NETWORKS];
75 int ipx_general_PacketReady(ipx_socket_t *s) {
81 tv.tv_sec = tv.tv_usec = 0;
82 if (select(s->fd + 1, &set, NULL, NULL, &tv) > 0)
88 struct ipx_driver *driver = &ipx_udp;
90 ubyte * ipx_get_my_server_address()
92 return (ubyte *)&ipx_network;
95 ubyte * ipx_get_my_local_address()
97 return (ubyte *)(ipx_MyAddress + 4);
100 void arch_ipx_set_driver(int ipx_driver)
104 case IPX_DRIVER_IPX: driver = &ipx_bsd; break;
106 case IPX_DRIVER_KALI: driver = &ipx_kali; break;
107 case IPX_DRIVER_UDP: driver = &ipx_udp; break;
112 int ipx_init(int socket_number)
116 if ((i = FindArg("-ipxnetwork")) && Args[i + 1]) {
117 unsigned long n = strtol(Args[i + 1], NULL, 16);
118 ipx_MyAddress[0] = n >> 24; ipx_MyAddress[1] = (n >> 16) & 255;
119 ipx_MyAddress[2] = (n >> 8) & 255; ipx_MyAddress[3] = n & 255;
120 printf("IPX: Using network %08x\n", (unsigned int)n);
122 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
123 return IPX_NOT_INSTALLED;
125 driver->GetMyAddress();
126 memcpy(&ipx_network, ipx_MyAddress, 4);
127 Ipx_num_networks = 0;
128 memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
137 driver->CloseSocket(&ipx_socket_data);
141 int ipx_get_packet_data( ubyte * data )
143 struct ipx_recv_data rd;
144 char buf[MAX_IPX_DATA];
145 //killed 6-15-99 to get rid of compile warnings - OE
151 //edited 04/12/99 Matt Mueller - duh, we don't want to throw all that data away!
152 //--killed-- Like the original, only take latest packet, throw away rest
153 //do _NOT_ throw them away!
154 while (driver->PacketReady(&ipx_socket_data)) {
156 driver->ReceivePacket(&ipx_socket_data, buf,
157 sizeof(buf), &rd)) > 4) {
158 if (!memcmp(rd.src_network, ipx_MyAddress, 10))
159 continue; /* don't get own pkts */
160 //--killed-- pkt_num = INTEL_INT(*(uint *)buf);
161 //--killed-- if (pkt_num >= best_id) {
162 memcpy(data, buf + 4, size - 4);
164 //--killed-- best_id = pkt_num;
165 //--killed-- best_size = size - 4;
173 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
175 u_char buf[MAX_IPX_DATA];
176 IPXPacket_t ipx_header;
178 memcpy(ipx_header.Destination.Network, network, 4);
179 memcpy(ipx_header.Destination.Node, immediate_address, 6);
180 *(u_short *)ipx_header.Destination.Socket = htons(ipx_socket_data.socket);
181 ipx_header.PacketType = 4; /* Packet Exchange */
182 *(uint *)buf = INTEL_INT(ipx_packetnum);
184 //ipx_packettotal+=datasize+4;
185 //if (f2i(Players[Player_num].time_level) && (f2i(Players[Player_num].time_level)%10!=ipx_lastspeed))
187 // ipx_lastspeed=f2i(Players[Player_num].time_level)%10;
188 // printf("tot=%i,t2=%i,time=%i,avg=%i,a2=%i\n",ipx_packetnum,ipx_packettotal,(int)f2i(Players[Player_num].time_level),
189 // ipx_packetnum/(int)f2i(Players[Player_num].time_level),
190 // ipx_packettotal/(int)f2i(Players[Player_num].time_level));
192 memcpy(buf + 4, data, datasize);
193 driver->SendPacket(&ipx_socket_data, &ipx_header, buf, datasize + 4);
196 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
198 // let's hope Linux knows how to route it
199 memcpy( local_target, node, 6 );
202 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
205 ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
206 ubyte local_address[6];
208 // Set to all networks besides mine
209 for (i=0; i<Ipx_num_networks; i++ ) {
210 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) ) {
211 ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
212 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
214 ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
218 //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
220 // Send directly to all users not on my network or in the network list.
221 for (i=0; i<Ipx_num_users; i++ ) {
222 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) ) {
223 for (j=0; j<Ipx_num_networks; j++ ) {
224 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
227 ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
234 // Sends a non-localized packet... needs 4 byte server, 6 byte address
235 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
237 ubyte local_address[6];
239 #ifdef WORDS_NEED_ALIGNMENT
241 if (memcmp(server, &zero, 4)) {
242 #else // WORDS_NEED_ALIGNMENT
243 if ((*(uint *)server) != 0) {
244 #endif // WORDS_NEED_ALIGNMENT
245 ipx_get_local_target( server, address, local_address );
246 ipx_send_packet_data( data, datasize, server, address, local_address );
248 // Old method, no server info.
249 ipx_send_packet_data( data, datasize, server, address, address );
253 int ipx_change_default_socket( ushort socket_number )
255 if ( !ipx_installed ) return -3;
257 driver->CloseSocket(&ipx_socket_data);
258 if (driver->OpenSocket(&ipx_socket_data, socket_number)) {
264 void ipx_read_user_file(char * filename)
268 char temp_line[132], *p1;
271 if (!filename) return;
275 fp = fopen( filename, "rt" );
278 printf( "Broadcast Users:\n" );
280 while (fgets(temp_line, 132, fp)) {
282 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
283 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
284 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
285 if (strlen(temp_line) >= 21 && temp_line[8] == '/') {
286 for (n = 0; n < 4; n++) {
287 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
293 for (n = 0; n < 6; n++) {
294 if (sscanf(temp_line + 9 + n * 2, "%2x", &x) != 1)
303 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] );
304 if ( n != 10 ) continue;
306 if ( Ipx_num_users < MAX_USERS ) {
307 ubyte * ipx_real_buffer = (ubyte *)&tmp;
308 ipx_get_local_target( tmp.network, tmp.node, tmp.address );
309 Ipx_users[Ipx_num_users++] = tmp;
310 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
311 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] );
313 printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
322 void ipx_read_network_file(char * filename)
326 char temp_line[132], *p1;
329 if (!filename) return;
331 fp = fopen( filename, "rt" );
334 printf( "Using Networks:\n" );
335 for (i=0; i<Ipx_num_networks; i++ ) {
336 ubyte * n1 = (ubyte *)&Ipx_networks[i];
337 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
340 while (fgets(temp_line, 132, fp)) {
342 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
343 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
344 #if 1 // adb: replaced sscanf(..., "%2x...", (char *)...) with better, but longer code
345 if (strlen(temp_line) >= 8) {
346 for (n = 0; n < 4; n++) {
347 if (sscanf(temp_line + n * 2, "%2x", &x) != 1)
356 n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
357 if ( n != 4 ) continue;
359 if ( Ipx_num_networks < MAX_NETWORKS ) {
361 for (j=0; j<Ipx_num_networks; j++ )
362 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
364 if ( j >= Ipx_num_networks ) {
365 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
366 printf(" %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
369 printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );