/* "Dumb terminal" session command for serial lines
 * Copyright 1991 Phil Karn, KA9Q
 *
 *	Feb '91	Bill Simpson
 *		rlsd control and improved dialer
 */
#include "global.h"
#include "mbuf.h"
#include "proc.h"
#include "iface.h"
#ifndef	UNIX
#include "8250.h"
#endif
#include "asy.h"
#include "tty.h"
#include "session.h"
#include "socket.h"
#include "commands.h"
#include "devparam.h"


static void tip_out __ARGS((int dev,void *n1,void *n2));


/* Execute user telnet command */
int
dotip(argc,argv,p)
int argc;
char *argv[];
void *p;
{
	struct session *sp;
	register struct iface *ifp;
	char *ifn;
	int (*rawsave) __ARGS((struct iface *,struct mbuf *));
	int c;

	if((ifp = if_lookup(argv[1])) == NULLIF){
		tprintf("Interface %s unknown\n",argv[1]);
		return 1;
	}
	if( ifp->dev >= ASY_MAX || Asy[ifp->dev].iface != ifp ){
		tprintf("Interface %s not asy port\n",argv[1]);
		return 1;
	}
	if(ifp->raw == bitbucket){
		tprintf("tip or dialer session already active on %s\n",argv[1]);
		return 1;
	}

	/* Allocate a session descriptor */
	if((sp = newsession(argv[1],TIP,1)) == NULLSESSION){
		tprintf("Too many sessions\n");
		return 1;
	}
	Current->flowmode = 0;
	/* Save output handler and temporarily redirect output to null */
	rawsave = ifp->raw;
	ifp->raw = bitbucket;

	/* Suspend the packet input driver. Note that the transmit driver
	 * is left running since we use it to send buffers to the line.
	 */
	suspend(ifp->rxproc);

	/* Put tty into raw mode */
	sp->ttystate.echo = 0;
	sp->ttystate.edit = 0;
	sockmode(sp->output,SOCK_BINARY);

	/* Now fork into two paths, one rx, one tx */
	ifn = if_name( ifp, " tip out" );
	sp->proc1 = newproc(ifn,256,tip_out,ifp->dev,NULL,NULL,0);
	free( ifn );

	ifn = if_name( ifp, " tip in" );
	chname( Curproc, ifn );
	free( ifn );

	/* bring the line up (just in case) */
	if ( ifp->ioctl != NULL )
		(*ifp->ioctl)( ifp, PARAM_UP, TRUE, 0L );

	while((c = get_asy(ifp->dev)) != -1)
		tputc(c & 0x7f);
	tflush();

	killproc(sp->proc1);
	sp->proc1 = NULLPROC;
	ifp->raw = rawsave;
	resume(ifp->rxproc);
	keywait(NULLCHAR,1);
	freesession(sp);
	return 0;
}


/* Output process, DTE version */
static void
tip_out(dev,n1,n2)
int dev;
void *n1,*n2;
{
	int c;
	char c1;

	while((c = recvchar(Curproc->input)) != EOF){
		if(c == '\n')
			c = '\r';		/* NL => CR */
		c1 = c;
		asy_write(dev,&c1,1);
		Asy[dev].iface->lastsent = secclock();
	}
}