unused/bios/ipx.c

   1 /*
   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 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14
  15 #include <i86.h>
  16 #include <dos.h>
  17 #include <stdio.h>
  18 #include <string.h>
  19 #include <malloc.h>
  20 #include <stdlib.h>
  21 #include <conio.h>
  22 #include <assert.h>
  23
  24 #include "types.h"
  25 #include "timer.h"
  26 #include "ipx.h"
  27 #include "dxxerror.h"
  28 #include "dpmi.h"
  29 #include "key.h"
  30
  31 typedef unsigned char BYTE;
  32 typedef unsigned short WORD;
  33 typedef unsigned long DWORD;
  34
  35 typedef struct local_address {
  36         ubyte address[6];
  37 } local_address;
  38
  39 typedef struct net_address {
  40         BYTE                            network_id[4];
  41         local_address   node_id;
  42         WORD                            socket_id;
  43 } net_address;
  44
  45 typedef struct ipx_header {
  46         WORD                    checksum;
  47         WORD                    length;
  48         BYTE                    transport_control;
  49         BYTE                    packet_type;
  50         net_address     destination;
  51         net_address     source;
  52 } ipx_header;
  53
  54 typedef struct ecb_header {
  55         WORD                    link[2];
  56         WORD                    esr_address[2];
  57         BYTE                    in_use;
  58         BYTE                    completion_code;
  59         WORD                    socket_id;
  60         BYTE                    ipx_reserved[14];
  61         WORD                    connection_id;
  62         local_address immediate_address;
  63         WORD                    fragment_count;
  64         WORD                    fragment_pointer[2];
  65         WORD                    fragment_size;
  66 } ecb_header;
  67
  68 typedef struct packet_data {
  69         int                     packetnum;
  70         byte                    data[IPX_MAX_DATA_SIZE];
  71 } packet_data;
  72
  73 typedef struct ipx_packet {
  74         ecb_header      ecb;
  75         ipx_header      ipx;
  76         packet_data     pd;
  77 } ipx_packet;
  78
  79 typedef struct user_address {
  80         ubyte network[4];
  81         ubyte node[6];
  82         ubyte address[6];
  83 } user_address;
  84
  85 #define MAX_USERS 64
  86 int Ipx_num_users = 0;
  87 user_address Ipx_users[MAX_USERS];
  88
  89 #define MAX_NETWORKS 64
  90 int Ipx_num_networks = 0;
  91 uint Ipx_networks[MAX_NETWORKS];
  92
  93 int ipx_packetnum = 0;
  94
  95 #define MAX_PACKETS 64
  96
  97 static packet_data packet_buffers[MAX_PACKETS];
  98 static short packet_free_list[MAX_PACKETS];
  99 static int num_packets = 0;
 100 static int largest_packet_index = 0;
 101 static short packet_size[MAX_PACKETS];
 102
 103 WORD ipx_socket=0;
 104 ubyte ipx_installed=0;
 105 WORD ipx_vector_segment;
 106 WORD ipx_vector_offset;
 107 ubyte ipx_socket_life = 0;      // 0=closed at prog termination, 0xff=closed when requested.
 108 DWORD ipx_network = 0;
 109 local_address ipx_my_node;
 110 WORD ipx_num_packets=32;                // 32 Ipx packets
 111 ipx_packet * packets;
 112 int neterrors = 0;
 113 ushort ipx_packets_selector;
 114
 115 ecb_header * last_ecb=NULL;
 116 int lastlen=0;
 117
 118 void free_packet( int id )
 119 {
 120         packet_buffers[id].packetnum = -1;
 121         packet_free_list[ --num_packets ] = id;
 122         if (largest_packet_index==id)
 123                 while ((--largest_packet_index>0) && (packet_buffers[largest_packet_index].packetnum == -1 ));
 124 }
 125
 126 int ipx_get_packet_data( ubyte * data )
 127 {
 128         int i, n, best, best_id, size;
 129
 130         for (i=1; i<ipx_num_packets; i++ )      {
 131                 if ( !packets[i].ecb.in_use )   {
 132                         got_new_packet( &packets[i].ecb );
 133                         packets[i].ecb.in_use = 0;
 134                         ipx_listen_for_packet(&packets[i].ecb);
 135                 }
 136         }
 137
 138         best = -1;
 139         n = 0;
 140         best_id = -1;
 141
 142         for (i=0; i<=largest_packet_index; i++ )        {
 143                 if ( packet_buffers[i].packetnum > -1 ) {
 144                         n++;
 145                         if ( best == -1 || (packet_buffers[i].packetnum<best) ) {
 146                                 best = packet_buffers[i].packetnum;
 147                                 best_id = i;
 148                         }
 149                 }
 150         }
 151
 152         //mprintf( (0, "Best id = %d, pn = %d, last_ecb = %x, len=%x, ne = %d\n", best_id, best, last_ecb, lastlen, neterrors ));
 153         //mprintf( (1, "<%d> ", neterrors ));
 154
 155         if ( best_id < 0 ) return 0;
 156
 157         size = packet_size[best_id];
 158         memcpy( data, packet_buffers[best_id].data, size );
 159         free_packet(best_id);
 160
 161         return size;
 162 }
 163
 164 unsigned int swap_short( unsigned int short );
 165 #pragma aux swap_short parm [eax] = "xchg al,ah";
 166
 167 void got_new_packet( ecb_header * ecb )
 168 {
 169         ipx_packet * p;
 170         int id;
 171         unsigned short datasize;
 172
 173         datasize = 0;
 174         last_ecb = ecb;
 175         p = (ipx_packet *)ecb;
 176
 177         if ( p->ecb.in_use ) { neterrors++; return; }
 178         if      ( p->ecb.completion_code )      { neterrors++; return; }
 179
 180         //      Error( "Recieve error %d for completion code", p->ecb.completion_code );
 181
 182         if ( memcmp( &p->ipx.source.node_id, &ipx_my_node, 6 ) )        {
 183                 datasize=swap_short(p->ipx.length);
 184                 lastlen=datasize;
 185                 datasize -= sizeof(ipx_header);
 186                 // Find slot to put packet in...
 187                 if ( datasize > 0 && datasize <= sizeof(packet_data) )  {
 188                         if ( num_packets >= MAX_PACKETS ) {
 189                                 //printf( 1, "IPX: Packet buffer overrun!!!\n" );
 190                                 neterrors++;
 191                                 return;
 192                         }
 193                         id = packet_free_list[ num_packets++ ];
 194                         if (id > largest_packet_index ) largest_packet_index = id;
 195                         packet_size[id] = datasize-sizeof(int);
 196                         packet_buffers[id].packetnum =  p->pd.packetnum;
 197                         if ( packet_buffers[id].packetnum < 0 ) { neterrors++; return; }
 198                         memcpy( packet_buffers[id].data, p->pd.data, packet_size[id] );
 199                 } else {
 200                         neterrors++; return;
 201                 }
 202         }
 203         // Repost the ecb
 204         p->ecb.in_use = 0;
 205         //ipx_listen_for_packet(&p->ecb);
 206 }
 207
 208 ubyte * ipx_get_my_local_address()
 209 {
 210         return ipx_my_node.address;
 211 }
 212
 213 ubyte * ipx_get_my_server_address()
 214 {
 215         return (ubyte *)&ipx_network;
 216 }
 217
 218 void ipx_listen_for_packet(ecb_header * ecb )
 219 {
 220         dpmi_real_regs rregs;
 221         ecb->in_use = 0x1d;
 222         memset(&rregs,0,sizeof(dpmi_real_regs));
 223         rregs.ebx = 4;  // Listen For Packet function
 224         rregs.esi = DPMI_real_offset(ecb);
 225         rregs.es = DPMI_real_segment(ecb);
 226         dpmi_real_int386x( 0x7A, &rregs );
 227 }
 228
 229 void ipx_cancel_listen_for_packet(ecb_header * ecb )
 230 {
 231         dpmi_real_regs rregs;
 232         memset(&rregs,0,sizeof(dpmi_real_regs));
 233         rregs.ebx = 6;  // IPX Cancel event
 234         rregs.esi = DPMI_real_offset(ecb);
 235         rregs.es = DPMI_real_segment(ecb);
 236         dpmi_real_int386x( 0x7A, &rregs );
 237 }
 238
 239
 240 void ipx_send_packet(ecb_header * ecb )
 241 {
 242         dpmi_real_regs rregs;
 243         memset(&rregs,0,sizeof(dpmi_real_regs));
 244         rregs.ebx = 3;  // Send Packet function
 245         rregs.esi = DPMI_real_offset(ecb);
 246         rregs.es = DPMI_real_segment(ecb);
 247         dpmi_real_int386x( 0x7A, &rregs );
 248 }
 249
 250 typedef struct {
 251         ubyte   network[4];
 252         ubyte           node[6];
 253         ubyte           local_target[6];
 254 } net_xlat_info;
 255
 256 void ipx_get_local_target( ubyte * server, ubyte * node, ubyte * local_target )
 257 {
 258         net_xlat_info * info;
 259         dpmi_real_regs rregs;
 260
 261         // Get dos memory for call...
 262         info = (net_xlat_info *)dpmi_get_temp_low_buffer( sizeof(net_xlat_info) );
 263         assert( info != NULL );
 264         memcpy( info->network, server, 4 );
 265         memcpy( info->node, node, 6 );
 266
 267         memset(&rregs,0,sizeof(dpmi_real_regs));
 268
 269         rregs.ebx = 2;          // Get Local Target
 270         rregs.es = DPMI_real_segment(info);
 271         rregs.esi = DPMI_real_offset(info->network);
 272         rregs.edi = DPMI_real_offset(info->local_target);
 273
 274         dpmi_real_int386x( 0x7A, &rregs );
 275
 276         // Save the local target...
 277         memcpy( local_target, info->local_target, 6 );
 278 }
 279
 280 void ipx_close()
 281 {
 282         dpmi_real_regs rregs;
 283         if ( ipx_installed )    {
 284                 // When using VLM's instead of NETX, the sockets don't
 285                 // seem to automatically get closed, so we must explicitly
 286                 // close them at program termination.
 287                 ipx_installed = 0;
 288                 memset(&rregs,0,sizeof(dpmi_real_regs));
 289                 rregs.edx = ipx_socket;
 290                 rregs.ebx = 1;  // Close socket
 291                 dpmi_real_int386x( 0x7A, &rregs );
 292         }
 293 }
 294
 295
 296 //---------------------------------------------------------------
 297 // Initializes all IPX internals.
 298 // If socket_number==0, then opens next available socket.
 299 // Returns:     0  if successful.
 300 //                              -1 if socket already open.
 301 //                              -2      if socket table full.
 302 //                              -3 if IPX not installed.
 303 //                              -4 if couldn't allocate low dos memory
 304 //                              -5 if error with getting internetwork address
 305
 306 int ipx_init( int socket_number, int show_address )
 307 {
 308         dpmi_real_regs rregs;
 309         ubyte *ipx_real_buffer;
 310         int i;
 311
 312         atexit(ipx_close);
 313
 314         ipx_packetnum = 0;
 315
 316         // init packet buffers.
 317         for (i=0; i<MAX_PACKETS; i++ )  {
 318                 packet_buffers[i].packetnum = -1;
 319                 packet_free_list[i] = i;
 320         }
 321         num_packets = 0;
 322         largest_packet_index = 0;
 323
 324         // Get the IPX vector
 325         memset(&rregs,0,sizeof(dpmi_real_regs));
 326         rregs.eax=0x00007a00;
 327         dpmi_real_int386x( 0x2f, &rregs );
 328
 329         if ( (rregs.eax & 0xFF) != 0xFF )       {
 330                 return 3;
 331         }
 332         ipx_vector_offset = rregs.edi & 0xFFFF;
 333         ipx_vector_segment = rregs.es;
 334         //printf( "IPX entry point at %.4x:%.4x\n", ipx_vector_segment, ipx_vector_offset );
 335
 336         // Open a socket for IPX
 337
 338         memset(&rregs,0,sizeof(dpmi_real_regs));
 339         swab( (char *)&socket_number,(char *)&ipx_socket, 2 );
 340         rregs.edx = ipx_socket;
 341         rregs.eax = ipx_socket_life;
 342         rregs.ebx = 0;  // Open socket
 343         dpmi_real_int386x( 0x7A, &rregs );
 344
 345         ipx_socket = rregs.edx & 0xFFFF;
 346
 347         if ( rregs.eax & 0xFF ) {
 348                 //mprintf( (1, "IPX error opening channel %d\n", socket_number-IPX_DEFAULT_SOCKET ));
 349                 return -2;
 350         }
 351
 352         ipx_installed = 1;
 353
 354         // Find our internetwork address
 355         ipx_real_buffer = dpmi_get_temp_low_buffer( 1024 );     // 1k block
 356         if ( ipx_real_buffer == NULL )  {
 357                 //printf( "Error allocation realmode memory\n" );
 358                 return -4;
 359         }
 360
 361         memset(&rregs,0,sizeof(dpmi_real_regs));
 362         rregs.ebx = 9;          // Get internetwork address
 363         rregs.esi = DPMI_real_offset(ipx_real_buffer);
 364         rregs.es = DPMI_real_segment(ipx_real_buffer);
 365         dpmi_real_int386x( 0x7A, &rregs );
 366
 367         if ( rregs.eax & 0xFF ) {
 368                 //printf( "Error getting internetwork address!\n" );
 369                 return -2;
 370         }
 371
 372         memcpy( &ipx_network, ipx_real_buffer, 4 );
 373         memcpy( &ipx_my_node, &ipx_real_buffer[4], 6 );
 374
 375         Ipx_num_networks = 0;
 376         memcpy( &Ipx_networks[Ipx_num_networks++], &ipx_network, 4 );
 377
 378         if ( show_address )     {
 379                 printf( "My IPX addresss is " );
 380                 printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
 381                 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] );
 382                 printf( "\n" );
 383         }
 384
 385         packets = dpmi_real_malloc( sizeof(ipx_packet)*ipx_num_packets, &ipx_packets_selector );
 386         if ( packets == NULL )  {
 387                 //printf( "Couldn't allocate real memory for %d packets\n", ipx_num_packets );
 388                 return -4;
 389         }
 390         if (!dpmi_lock_region( packets, sizeof(ipx_packet)*ipx_num_packets ))   {
 391                 //printf( "Couldn't lock real memory for %d packets\n", ipx_num_packets );
 392                 return -4;
 393         }
 394         memset( packets, 0, sizeof(ipx_packet)*ipx_num_packets );
 395
 396         for (i=1; i<ipx_num_packets; i++ )      {
 397                 packets[i].ecb.in_use = 0x1d;
 398                 //packets[i].ecb.in_use = 0;
 399                 packets[i].ecb.socket_id = ipx_socket;
 400                 packets[i].ecb.fragment_count = 1;
 401                 packets[i].ecb.fragment_pointer[0] = DPMI_real_offset(&packets[i].ipx);
 402                 packets[i].ecb.fragment_pointer[1] = DPMI_real_segment(&packets[i].ipx);
 403                 packets[i].ecb.fragment_size = sizeof(ipx_packet)-sizeof(ecb_header);                   //-sizeof(ecb_header);
 404
 405                 ipx_listen_for_packet(&packets[i].ecb);
 406         }
 407
 408         packets[0].ecb.socket_id = ipx_socket;
 409         packets[0].ecb.fragment_count = 1;
 410         packets[0].ecb.fragment_pointer[0] = DPMI_real_offset(&packets[0].ipx);
 411         packets[0].ecb.fragment_pointer[1] = DPMI_real_segment(&packets[0].ipx);
 412         packets[0].ipx.packet_type = 4;         // IPX packet
 413         packets[0].ipx.destination.socket_id = ipx_socket;
 414 //      memcpy( packets[0].ipx.destination.network_id, &ipx_network, 4 );
 415         memset( packets[0].ipx.destination.network_id, 0, 4 );
 416
 417         return 0;
 418 }
 419
 420 void ipx_send_packet_data( ubyte * data, int datasize, ubyte *network, ubyte *address, ubyte *immediate_address )
 421 {
 422         assert(ipx_installed);
 423
 424         Assert(datasize < IPX_MAX_DATA_SIZE);
 425
 426         // Make sure no one is already sending something
 427         while( packets[0].ecb.in_use )
 428         {
 429         }
 430
 431 //      if (packets[0].ecb.completion_code)
 432           //    Error("IPX: Send error %d for completion code\n", packets[0].ecb.completion_code );
 433
 434         // Fill in destination address
 435         if ( memcmp( network, &ipx_network, 4 ) )
 436                 memcpy( packets[0].ipx.destination.network_id, network, 4 );
 437         else
 438                 memset( packets[0].ipx.destination.network_id, 0, 4 );
 439         memcpy( packets[0].ipx.destination.node_id.address, address, 6 );
 440         memcpy( packets[0].ecb.immediate_address.address, immediate_address, 6 );
 441         packets[0].pd.packetnum = ipx_packetnum++;
 442
 443         // Fill in data to send
 444         packets[0].ecb.fragment_size = sizeof(ipx_header) + sizeof(int) + datasize;
 445
 446         assert( datasize > 1 );
 447         assert( packets[0].ecb.fragment_size <= 576 );
 448
 449         memcpy( packets[0].pd.data, data, datasize );
 450
 451         // Send it
 452         ipx_send_packet( &packets[0].ecb );
 453
 454 }
 455
 456 void ipx_send_broadcast_packet_data( ubyte * data, int datasize )
 457 {
 458         int i, j;
 459         ubyte broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 460         ubyte local_address[6];
 461
 462         // Set to all networks besides mine
 463         for (i=0; i<Ipx_num_networks; i++ )     {
 464                 if ( memcmp( &Ipx_networks[i], &ipx_network, 4 ) )      {
 465                         ipx_get_local_target( (ubyte *)&Ipx_networks[i], broadcast, local_address );
 466                         ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, local_address );
 467                 } else {
 468                         ipx_send_packet_data( data, datasize, (ubyte *)&Ipx_networks[i], broadcast, broadcast );
 469                 }
 470         }
 471
 472         //OLDipx_send_packet_data( data, datasize, (ubyte *)&ipx_network, broadcast, broadcast );
 473
 474         // Send directly to all users not on my network or in the network list.
 475         for (i=0; i<Ipx_num_users; i++ )        {
 476                 if ( memcmp( Ipx_users[i].network, &ipx_network, 4 ) )  {
 477                         for (j=0; j<Ipx_num_networks; j++ )             {
 478                                 if (!memcmp( Ipx_users[i].network, &Ipx_networks[j], 4 ))
 479                                         goto SkipUser;
 480                         }
 481                         ipx_send_packet_data( data, datasize, Ipx_users[i].network, Ipx_users[i].node, Ipx_users[i].address );
 482 SkipUser:
 483                         j = 0;
 484                 }
 485         }
 486 }
 487
 488 // Sends a non-localized packet... needs 4 byte server, 6 byte address
 489 void ipx_send_internetwork_packet_data( ubyte * data, int datasize, ubyte * server, ubyte *address )
 490 {
 491         ubyte local_address[6];
 492
 493         if ( (*(uint *)server) != 0 )   {
 494                 ipx_get_local_target( server, address, local_address );
 495                 ipx_send_packet_data( data, datasize, server, address, local_address );
 496         } else {
 497                 // Old method, no server info.
 498                 ipx_send_packet_data( data, datasize, server, address, address );
 499         }
 500 }
 501
 502 int ipx_change_default_socket( ushort socket_number )
 503 {
 504         int i;
 505         WORD new_ipx_socket;
 506         dpmi_real_regs rregs;
 507
 508         if ( !ipx_installed ) return -3;
 509
 510         // Open a new socket
 511         memset(&rregs,0,sizeof(dpmi_real_regs));
 512         swab( (char *)&socket_number,(char *)&new_ipx_socket, 2 );
 513         rregs.edx = new_ipx_socket;
 514         rregs.eax = ipx_socket_life;
 515         rregs.ebx = 0;  // Open socket
 516         dpmi_real_int386x( 0x7A, &rregs );
 517
 518         new_ipx_socket = rregs.edx & 0xFFFF;
 519
 520         if ( rregs.eax & 0xFF ) {
 521                 //printf( (1, "IPX error opening channel %d\n", socket_number-IPX_DEFAULT_SOCKET ));
 522                 return -2;
 523         }
 524
 525         for (i=1; i<ipx_num_packets; i++ )      {
 526                 ipx_cancel_listen_for_packet(&packets[i].ecb);
 527         }
 528
 529         // Close existing socket...
 530         memset(&rregs,0,sizeof(dpmi_real_regs));
 531         rregs.edx = ipx_socket;
 532         rregs.ebx = 1;  // Close socket
 533         dpmi_real_int386x( 0x7A, &rregs );
 534
 535         ipx_socket = new_ipx_socket;
 536
 537         // Repost all listen requests on the new socket...
 538         for (i=1; i<ipx_num_packets; i++ )      {
 539                 packets[i].ecb.in_use = 0;
 540                 packets[i].ecb.socket_id = ipx_socket;
 541                 ipx_listen_for_packet(&packets[i].ecb);
 542         }
 543
 544         packets[0].ecb.socket_id = ipx_socket;
 545         packets[0].ipx.destination.socket_id = ipx_socket;
 546
 547         ipx_packetnum = 0;
 548         // init packet buffers.
 549         for (i=0; i<MAX_PACKETS; i++ )  {
 550                 packet_buffers[i].packetnum = -1;
 551                 packet_free_list[i] = i;
 552         }
 553         num_packets = 0;
 554         largest_packet_index = 0;
 555
 556         return 0;
 557 }
 558
 559 void ipx_read_user_file(char * filename)
 560 {
 561         FILE * fp;
 562         user_address tmp;
 563         char temp_line[132], *p1;
 564         int n, ln=0;
 565
 566         if (!filename) return;
 567
 568         Ipx_num_users = 0;
 569
 570         fp = fopen( filename, "rt" );
 571         if ( !fp ) return;
 572
 573         printf( "Broadcast Users:\n" );
 574
 575         while (fgets(temp_line, 132, fp)) {
 576                 unsigned long net;
 577                 char *np;
 578                 ln++;
 579                 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
 580                 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
 581                 if (strlen(temp_line) == 0) continue;  //skip blank lines
 582                 //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] );
 583                 //if ( n != 10 ) continue;
 584                 np = strchr(temp_line,'/');
 585                 if (!np)
 586                         Error("Invalid entry <%s> on line %d of IPX User file <%s>",temp_line,ln,filename);
 587                 else np++;
 588                 n = sscanf( temp_line, "%x", &net);
 589                 if (n != 1)
 590                         Error("Invalid entry <%s> on line %d of IPX User file <%s>",temp_line,ln,filename);
 591                 else {
 592                         tmp.network[3] = (net & 0xff); net >>= 8;
 593                         tmp.network[2] = (net & 0xff); net >>= 8;
 594                         tmp.network[1] = (net & 0xff); net >>= 8;
 595                         tmp.network[0] = (net & 0xff);
 596                 }
 597                 n = sscanf( np, "%2x%2x%2x%2x%2x%2x", &tmp.node[0], &tmp.node[1], &tmp.node[2],&tmp.node[3], &tmp.node[4], &tmp.node[5] );
 598                 if (n != 6)
 599                         Error("Invalid entry <%s> on line %d of IPX User file <%s>\n"
 600                                         "  Node address must be 6 bytes (12 digits)",temp_line,ln,filename);
 601                 if ( Ipx_num_users < MAX_USERS )        {
 602                         ubyte * ipx_real_buffer = (ubyte *)&tmp;
 603                         ipx_get_local_target( tmp.network, tmp.node, tmp.address );
 604                         Ipx_users[Ipx_num_users++] = tmp;
 605                         printf( "%02X%02X%02X%02X/", ipx_real_buffer[0],ipx_real_buffer[1],ipx_real_buffer[2],ipx_real_buffer[3] );
 606                         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] );
 607                 } else {
 608                         printf( "Too many addresses in %s! (Limit of %d)\n", filename, MAX_USERS );
 609                         fclose(fp);
 610                         return;
 611                 }
 612         }
 613         fclose(fp);
 614
 615 }
 616
 617
 618 void ipx_read_network_file(char * filename)
 619 {
 620         FILE * fp;
 621         user_address tmp;
 622         char temp_line[132], *p1;
 623         int i, n, ln=0;
 624
 625         if (!filename) return;
 626
 627         fp = fopen( filename, "rt" );
 628         if ( !fp ) return;
 629
 630         printf( "Using Networks:\n" );
 631         for (i=0; i<Ipx_num_networks; i++ )             {
 632                 ubyte * n1 = (ubyte *)&Ipx_networks[i];
 633                 printf("* %02x%02x%02x%02x\n", n1[0], n1[1], n1[2], n1[3] );
 634         }
 635
 636         while (fgets(temp_line, 132, fp)) {
 637                 unsigned long net;
 638                 ln++;
 639                 p1 = strchr(temp_line,'\n'); if (p1) *p1 = '\0';
 640                 p1 = strchr(temp_line,';'); if (p1) *p1 = '\0';
 641                 if (strlen(temp_line) == 0) continue;  //skip blank lines
 642                 //n = sscanf( temp_line, "%2x%2x%2x%2x", &tmp.network[0], &tmp.network[1], &tmp.network[2], &tmp.network[3] );
 643                 //if ( n != 4 ) continue;
 644                 n = sscanf( temp_line, "%x", &net );
 645                 if (n != 1)
 646                         Error("Invalid entry <%s> on line %d of IPX Net file <%s>",temp_line,ln,filename);
 647                 else {
 648                         tmp.network[3] = (net & 0xff); net >>= 8;
 649                         tmp.network[2] = (net & 0xff); net >>= 8;
 650                         tmp.network[1] = (net & 0xff); net >>= 8;
 651                         tmp.network[0] = (net & 0xff);
 652                 }
 653
 654                 if ( Ipx_num_networks < MAX_NETWORKS  ) {
 655                         int j;
 656                         for (j=0; j<Ipx_num_networks; j++ )
 657                                 if ( !memcmp( &Ipx_networks[j], tmp.network, 4 ) )
 658                                         break;
 659                         if ( j >= Ipx_num_networks )    {
 660                                 memcpy( &Ipx_networks[Ipx_num_networks++], tmp.network, 4 );
 661                                 printf("  %02x%02x%02x%02x\n", tmp.network[0], tmp.network[1], tmp.network[2], tmp.network[3] );
 662                         }
 663                 } else {
 664                         printf( "Too many networks in %s! (Limit of %d)\n", filename, MAX_NETWORKS );
 665                         fclose(fp);
 666                         return;
 667                 }
 668         }
 669         fclose(fp);
 670
 671 }
 672
 673 //---typedef struct rip_entry {
 674 //---   uint            network;
 675 //---   ushort  nhops;
 676 //---   ushort  nticks;
 677 //---} rip_entry;
 678 //---
 679 //---typedef struct rip_packet {
 680 //---   ushort          operation;              //1=request, 2=response
 681 //---   rip_entry       rip[50];
 682 //---} rip_packet;
 683 //---
 684 //---
 685 //---void  ipx_find_all_servers()
 686 //---{
 687 //---   int i;
 688 //---   rip_packet * rp;
 689 //---   assert(ipx_installed);
 690 //---
 691 //---   ipx_change_default_socket( 0x0453 );
 692 //---   //      ipx_change_default_socket( 0x5304 );
 693 //---
 694 //---   // Make sure no one is already sending something
 695 //---   while( packets[0].ecb.in_use )
 696 //---   {
 697 //---   }
 698 //---
 699 //---   if (packets[0].ecb.completion_code)     {
 700 //---           printf( "AAAA:Send error %d for completion code\n", packets[0].ecb.completion_code );
 701 //---           //exit(1);
 702 //---   }
 703 //---
 704 //---   rp = (rip_packet *)&packets[0].pd;
 705 //---
 706 //---   // Fill in destination address
 707 //---   {
 708 //---           char mzero1[] = {0,0,0,1};
 709 //---           char mzero[] = {0,0,0,0,0,1};
 710 //---           char immediate[6];
 711 //---           //memcpy( packets[0].ipx.destination.network_id, &ipx_network, 4 );
 712 //---           //memcpy( packets[0].ipx.destination.node_id.address, ipx_my_node.address, 6 );
 713 //---
 714 //---           memcpy( packets[0].ipx.destination.network_id, mzero1, 4 );
 715 //---           memcpy( packets[0].ipx.destination.node_id.address, mzero, 6 );
 716 //---
 717 //---           memcpy( packets[0].ipx.destination.socket_id, &ipx_socket, 2 );
 718 //---           memcpy( packets[0].ipx.source.network_id, &ipx_network, 4 );
 719 //---           memcpy( packets[0].ipx.source.node_id.address, ipx_my_node.address, 6 );
 720 //---           memcpy( packets[0].ipx.source.socket_id, &ipx_socket, 2 );
 721 //---           //memcpy( packets[0].ecb.immediate_address.address, ipx_my_node.address, 6 );
 722 //---           //mzero1[3] = 1;
 723 //---           //memcpy( packets[0].ipx.destination.network_id, mzero1, 4 );
 724 //---           //mzero[5] = 1;
 725 //---           //memcpy( packets[0].ipx.destination.node_id.address, mzero, 6 );
 726 //---           //ipx_get_local_target( mzero1, mzero, immediate );
 727 //---           //memcpy( packets[0].ecb.immediate_address.address, mzero, 6 );
 728 //---           //memcpy( packets[0].ecb.immediate_address.address, immediate, 6 );
 729 //---           //mzero[5] = 0;
 730 //---   }
 731 //---
 732 //---   packets[0].ipx.packet_type = 1;         // RIP packet
 733 //---
 734 //---   // Fill in data to send
 735 //---   packets[0].ecb.fragment_size = sizeof(ipx_header) + sizeof(rip_packet);
 736 //---   assert( packets[0].ecb.fragment_size <= 576 );
 737 //---
 738 //---   rp->operation = 0;              // Request
 739 //---   for (i=0;i<50; i++)     {
 740 //---           rp->rip[i].network = 0xFFFFFFFF;
 741 //---           rp->rip[i].nhops = 0;
 742 //---           rp->rip[i].nticks = 0;
 743 //---   }
 744 //---
 745 //---   // Send it
 746 //---   ipx_send_packet( &packets[0].ecb );
 747 //---
 748 //---   for (i=0;i<50; i++)     {
 749 //---           if ( rp->rip[i].network != 0xFFFFFFFF )
 750 //---                   printf( "Network = %8x, Hops=%d, Ticks=%d\n", rp->rip[i].network, rp->rip[i].nhops, rp->rip[i].nticks );
 751 //---   }
 752 //---}
 753 //---
 754 //---