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[unix-history] / usr / src / usr.bin / telnet / main.c

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1988 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)main.c      1.12 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>

#include "ring.h"

#include "externs.h"
#include "defines.h"

/*
* Initialize variables.
*/

void
tninit()
{
   init_terminal();

   init_network();
   
   init_telnet();

   init_sys();

   init_3270();
}


/*
* main.  Parse arguments, invoke the protocol or command parser.
*/


int
main(argc, argv)
       int argc;
       char *argv[];
{
   tninit();           /* Clear out things */
#ifdef  CRAY
   _setlist_init();    /* Work around compiler bug */
#endif

   TerminalSaveState();

   prompt = (unsigned char *)argv[0];
   while ((argc > 1) && (argv[1][0] == '-')) {
       if (!strcmp(argv[1], "-d")) {
           debug = 1;
       } else if (!strcmp(argv[1], "-n")) {
           if ((argc > 1) && (argv[2][0] != '-')) {    /* get file name */
               SetNetTrace(argv[2]);
               argv++;
               argc--;
           }
       } else {
#if     defined(TN3270) && defined(unix)
           if (!strcmp(argv[1], "-t")) {
               if ((argc > 1) && (argv[2][0] != '-')) { /* get file name */
                   transcom = tline;
                   (void) strcpy(transcom, argv[2]);
                   argv++;
                   argc--;
               }
           } else if (!strcmp(argv[1], "-noasynch")) {
               noasynchtty = 1;
               noasynchnet = 1;
           } else if (!strcmp(argv[1], "-noasynchtty")) {
               noasynchtty = 1;
           } else if (!strcmp(argv[1], "-noasynchnet")) {
               noasynchnet = 1;
           } else
#endif  /* defined(TN3270) && defined(unix) */
           if (argv[1][1] != '\0') {
               fprintf(stderr, "Unknown option *%s*.\n", argv[1]);
           }
       }
       argc--;
       argv++;
   }
   if (argc != 1) {
       if (setjmp(toplevel) != 0)
           Exit(0);
       if (tn(argc, argv) == 1) {
           return 0;
       } else {
           return 1;
       }
   }
   (void) setjmp(toplevel);
   for (;;) {
#if     !defined(TN3270)
       command(1, 0, 0);
#else   /* !defined(TN3270) */
       if (!shell_active) {
           command(1, 0, 0);
       } else {
#if     defined(TN3270)
           shell_continue();
#endif  /* defined(TN3270) */
       }
#endif  /* !defined(TN3270) */
   }
}