Tech Arsenal 1/Tech Arsenal (Arsenal Computer).ISO/tek-05/lan.zip/LAN.REV

Text File | 1991-07-18 | 6KB | 314 lines

#include <stdio.h>
#include <dos.h>
#include <bios.h>
#include <cxldef.h>
#include <cxlvid.h>

#define PORT  0   /*  Port Assignements 0 = Com 1 etc... */
#define PORT1 1
#define PORT2 2
#define PORT3 3

unsigned int filesize();

void sport();
void send_file();
void rec_file();
void get_file_name();
void send_file_name();
void port_init();
void wait();

/************************************/
error_clear()
{
 delay (1500);
 gotoxy (18,23);
 printf ("                                          ");
}

/************************************/
main()
{
 hidecur();
 clrscr();
 printf ("                    Lights of American Data Control Systems\n\n");
 printf ("                               Local Area Network\n\n\n\n\n");
 printf ("                             Revision 1.00 Beta Test\n");
 printf ("                                 July, 17, 1991\n\n\n");
 printf ("                             Press ANY KEY to abort!\n");
 gotoxy (1,18);
 printf ("┌──────────────────────────────────────┬───────────────────────────────────────┐");
 gotoxy (1,19);
 printf ("│ Date:                                │ Time:                                 │");
 gotoxy (1,20);
 printf ("├──────────────────────────────────────┼───────────────────────────────────────┤");
 gotoxy (1,21);
 printf ("│ Sending:                             │ Receiving:                            │");
 gotoxy (1,22);
 printf ("├──────────────────────────────────────┴───────────────────────────────────────┤");
 gotoxy (1,23);
 printf ("│ Error Messages:                                                              │");
 gotoxy (1,24);
 printf ("└──────────────────────────────────────────────────────────────────────────────┘");

 port_init(PORT1);
 do
 {
  gotoxy (9,19);
  printf ("%s",sysdate(0));
  gotoxy (48,19);
  printf ("%s",systime(0));
  gotoxy (12,21);
  printf ("                           ");
  gotoxy (53,21);
  printf ("                       ");
  if (check_stat(PORT1) & 256)
  {
   switch (rport(PORT1))
   {
    case 's': send_file(PORT1); break;
    case 'r': rec_file(PORT1); break;
   }
  }
 }
 while (!kbhit());
 clrscr();
}
/*************************/
void send_file(port)
int port;
{
 FILE *fp;
 char ch,fname[14];
 union
 {
  char c[2];
  unsigned int count;
 } cnt;
 sport(port,'.');

 get_file_name(fname,PORT1);
 if (!(fp=fopen(fname,"rb")))
 {
  gotoxy (19,23);
  printf ("Cannot open input file!");
  exit (1);
  error_clear();
 }
 if (rport(port) != '.')
 {
  gotoxy (19,23);
  printf ("Remote file failure\n");
  exit (1);
  error_clear();
 }
 gotoxy (12,21);
 printf ("%s\n",fname);
 cnt.count = filesize(fp);
 sport (port,cnt.c[0]);
 wait (port);

 sport (port,cnt.c[1]);
 do
 {
  ch = getc(fp);
  if (ferror(fp))
  {
   gotoxy (19,23);
   printf ("Error reading input file");
   error_clear();
   break;
  }
  if (!feof(fp))
  {
   wait (port);
   sport(port,ch);
  }
 }
 while (!feof(fp));
 wait (port);
 fclose(fp);
}

/********************************/
void rec_file(port)
int port;
{
 FILE *fp;
 char ch, fname[14];
 union
 {
  char c[2];
  unsigned int count;
 } cnt;
 sport (port,'.');

 get_file_name (fname,PORT1);

 gotoxy (53,21);
 printf ("%s\n",fname);
 /*remove (fname); */
 if (!(fp=fopen(fname,"wb")))
 {
  gotoxy (19,23);
  printf ("Cannot open output file\n");
  exit (1);
  error_clear();
 }
 sport (port,'.');
 cnt.c[0] = rport (port);
 sport (port,'.');
 cnt.c[1] = rport (port);
 sport (port,'.');

 for (; cnt.count; cnt.count --)
 {
  ch = rport (port);
  putc (ch,fp);
  if (ferror(fp))
  {
   gotoxy (19,23);
   printf ("Error writing file.\n");
   exit (1);
   error_clear();
  }
  sport (port,'.');
 }
 fclose(fp);
}

/***********************************/
unsigned int filesize(fp)
FILE *fp;
{
 unsigned long int i;
 i = 0;
 do
 {
  getc(fp);
  i++;
 }
 while (!feof(fp));
 rewind (fp);
 return i-1;
}

/***********************************/
void send_file_name (f,port)
char *f;
int port;
{
 do
 {
  sport (port,'?');
 }
 while (!kbhit() && !(check_stat(port) & 256));
 if (kbhit())
 {
  getch();
  exit (1);
 }
 wait (port);
 while (*f)
 {
  sport (port, *f++);
  wait (port);
 }
 sport (port,0);
}

/********************************/
void get_file_name (f,port)
char *f;
int port;
{
 while (rport(port) != '?') printf (".");
 sport (port,'.');
 while ((*f=rport (port)))
 {
  if (*f!='?')
  {
   f++;
   sport (port, '.');
  }
 }
 sport (port,'.');
}

/********************************/
void wait (port)
int port;
{
 if (rport (port) !='.')
 {
  gotoxy (19,23);
  printf ("Communication Error\n");
  exit (1);
  error_clear();
 }
}

/*********************************/
void sport (port,c)
int port;
char c;
{
 union REGS r;
 r.x.dx = port;
 r.h.al = c;
 r.h.ah = 1;
 int86 (0x14,&r,&r);
 if (r.h.ah & 128)
 {
  gotoxy (19,23);
  printf ("Send error detected in serial port");
  exit (1);
  error_clear();
 }
}

/*************************************/
rport (port)
int port;
{
 union REGS r;
 while (!(check_stat (port) & 256))
 if (kbhit())
 {
  getch();
  exit (1);
 }
 r.x.dx = port;
 r.h.ah = 2;
 int86 (0x14,&r,&r);
 if (r.h.ah & 128)
 {
  gotoxy (19,23);
  printf ("Read error detected in serial port.\n");
  error_clear();
 }
 return (r.h.al);
}

/***********************************/
check_stat (port)
int port;
{
 union REGS r;
 r.x.dx = port;
 r.h.ah = 3;
 int86 (0x14,&r,&r);
 return r.x.ax;
}

/**************************************/
void port_init (port)
int port;
{
 union REGS r;
 r.x.dx = port;
 r.h.al = 0;
 r.h.al = 251;
 int86 (0x14,&r,&r);
}