Ejemplo n.º 1
0
static void
dontoption(int option)
{

	if (will_wont_resp[option]) {
	    --will_wont_resp[option];
	    if (will_wont_resp[option] && my_state_is_wont(option))
		--will_wont_resp[option];
	}

	if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) {
	    switch (option) {
	    case TELOPT_LINEMODE:
		linemode = 0;	/* put us back to the default state */
		break;
#ifdef	OLD_ENVIRON
	    case TELOPT_NEW_ENVIRON:
		/*
		 * The new environ option wasn't recognized, try
		 * the old one.
		 */
		send_will(TELOPT_OLD_ENVIRON, 1);
		telopt_environ = TELOPT_OLD_ENVIRON;
		break;
#endif
	    }
	    /* we always accept a DONT */
	    set_my_want_state_wont(option);
	    if (my_state_is_will(option))
		send_wont(option, 0);
	    setconnmode(0);			/* Set new tty mode */
	}
	set_my_state_wont(option);
}
Ejemplo n.º 2
0
void send_wont(int option, int init) {
    if (init) {
        if ((will_wont_resp[option] == 0 && my_state_is_wont(option)) ||
                my_want_state_is_wont(option))
            return;
        set_my_want_state_wont(option);
        will_wont_resp[option]++;
    }
    netoprintf((char *)wont, option);

    DIAG(TD_OPTIONS, printoption("td: send wont", option));
}
Ejemplo n.º 3
0
void
send_wont(int c, int init)
{
    if (init) {
	if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) ||
				my_want_state_is_wont(c))
	    return;
	set_my_want_state_wont(c);
	will_wont_resp[c]++;
    }
    NET2ADD(IAC, WONT);
    NETADD(c);
    printoption("SENT", WONT, c);
}
Ejemplo n.º 4
0
static void
dontoption(int option)
{

	if (will_wont_resp[option]) {
	    --will_wont_resp[option];
	    if (will_wont_resp[option] && my_state_is_wont(option))
		--will_wont_resp[option];
	}

	if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) {
	    switch (option) {
	    case TELOPT_LINEMODE:
		linemode = 0;	/* put us back to the default state */
		break;
	    }
	    /* we always accept a DONT */
	    set_my_want_state_wont(option);
	    if (my_state_is_will(option))
		send_wont(option, 0);
	    setconnmode(0);			/* Set new tty mode */
	}
	set_my_state_wont(option);
}
Ejemplo n.º 5
0
static void
dooption(int option)
{
	int new_state_ok = 0;

	if (will_wont_resp[option]) {
	    --will_wont_resp[option];
	    if (will_wont_resp[option] && my_state_is_will(option))
		--will_wont_resp[option];
	}

	if (will_wont_resp[option] == 0) {
	  if (my_want_state_is_wont(option)) {

	    switch (option) {

	    case TELOPT_TM:
		/*
		 * Special case for TM.  We send a WILL, but pretend
		 * we sent WONT.
		 */
		send_will(option, 0);
		set_my_want_state_wont(TELOPT_TM);
		set_my_state_wont(TELOPT_TM);
		return;

	    case TELOPT_BINARY:		/* binary mode */
	    case TELOPT_NAWS:		/* window size */
	    case TELOPT_TSPEED:		/* terminal speed */
	    case TELOPT_LFLOW:		/* local flow control */
	    case TELOPT_TTYPE:		/* terminal type option */
	    case TELOPT_SGA:		/* no big deal */
#ifdef	ENCRYPTION
	    case TELOPT_ENCRYPT:	/* encryption variable option */
#endif	/* ENCRYPTION */
		new_state_ok = 1;
		break;

	    case TELOPT_NEW_ENVIRON:	/* New environment variable option */
#ifdef	OLD_ENVIRON
		if (my_state_is_will(TELOPT_OLD_ENVIRON))
			send_wont(TELOPT_OLD_ENVIRON, 1); /* turn off the old */
		goto env_common;
	    case TELOPT_OLD_ENVIRON:	/* Old environment variable option */
		if (my_state_is_will(TELOPT_NEW_ENVIRON))
			break;		/* Don't enable if new one is in use! */
	    env_common:
		telopt_environ = option;
#endif
		new_state_ok = 1;
		break;

#ifdef	AUTHENTICATION
	    case TELOPT_AUTHENTICATION:
		if (autologin)
			new_state_ok = 1;
		break;
#endif

	    case TELOPT_XDISPLOC:	/* X Display location */
		if (env_getvalue("DISPLAY"))
		    new_state_ok = 1;
		break;

	    case TELOPT_LINEMODE:
#ifdef	KLUDGELINEMODE
		kludgelinemode = 0;
		send_do(TELOPT_SGA, 1);
#endif
		set_my_want_state_will(TELOPT_LINEMODE);
		send_will(option, 0);
		set_my_state_will(TELOPT_LINEMODE);
		slc_init();
		return;

	    case TELOPT_ECHO:		/* We're never going to echo... */
	    default:
		break;
	    }

	    if (new_state_ok) {
		set_my_want_state_will(option);
		send_will(option, 0);
		setconnmode(0);			/* Set new tty mode */
	    } else {
		will_wont_resp[option]++;
		send_wont(option, 0);
	    }
	  } else {
	    /*
	     * Handle options that need more things done after the
	     * other side has acknowledged the option.
	     */
	    switch (option) {
	    case TELOPT_LINEMODE:
#ifdef	KLUDGELINEMODE
		kludgelinemode = 0;
		send_do(TELOPT_SGA, 1);
#endif
		set_my_state_will(option);
		slc_init();
		send_do(TELOPT_SGA, 0);
		return;
	    }
	  }
	}
	set_my_state_will(option);
}
Ejemplo n.º 6
0
void dontoption(int option) {
    /*
     * Process client input.
     */
    DIAG(TD_OPTIONS, printoption("td: recv dont", option));

    if (will_wont_resp[option]) {
        will_wont_resp[option]--;
        if (will_wont_resp[option] && my_state_is_wont(option))
            will_wont_resp[option]--;
    }
    if ((will_wont_resp[option] == 0) && (my_want_state_is_will(option))) {
        switch (option) {
        case TELOPT_BINARY:
            init_termbuf();
            tty_binaryout(0);
            set_termbuf();
            break;

        case TELOPT_ECHO:	/* we should stop echoing */
#ifdef	LINEMODE
#ifdef	KLUDGELINEMODE
            if (lmodetype == NO_LINEMODE)
#else
            if (his_state_is_wont(TELOPT_LINEMODE))
#endif
#endif
            {
                init_termbuf();
                tty_setecho(0);
                set_termbuf();
            }
            break;

        case TELOPT_SGA:
#if defined(LINEMODE) && defined(KLUDGELINEMODE)
            /*
             * If kludge linemode is in use, then we
             * must process an incoming do SGA for
             * linemode purposes.
             */
            if (lmodetype == KLUDGE_LINEMODE) {
                /*
                 * The client is asking us to turn
                 * linemode on.
                 */
                clientstat(TELOPT_LINEMODE, WILL, 0);
                /*
                 * If we did not turn line mode on,
                 * then what do we say?  Will SGA?
                 * This violates design of telnet.
                 * Gross.  Very Gross.
                 */
            }
            break;
#else
            set_my_want_state_wont(option);
            if (my_state_is_will(option))
                send_wont(option, 0);
            set_my_state_wont(option);
            if (turn_on_sga ^= 1) send_will(option,1);
            return;
#endif	/* defined(LINEMODE) && defined(KLUDGELINEMODE) */

        default:
            break;
        }

        set_my_want_state_wont(option);
        if (my_state_is_will(option))
            send_wont(option, 0);
    }
    set_my_state_wont(option);
}
Ejemplo n.º 7
0
void dooption(int option) {
    int changeok = 0;

    /*
     * Process client input.
     */

    DIAG(TD_OPTIONS, printoption("td: recv do", option));

    if (will_wont_resp[option]) {
        will_wont_resp[option]--;
        if (will_wont_resp[option] && my_state_is_will(option))
            will_wont_resp[option]--;
    }
    if ((will_wont_resp[option] == 0) && (my_want_state_is_wont(option))) {
        switch (option) {
        case TELOPT_ECHO:
#ifdef	LINEMODE
#ifdef	KLUDGELINEMODE
            if (lmodetype == NO_LINEMODE)
#else
            if (his_state_is_wont(TELOPT_LINEMODE))
#endif
#endif
            {
                init_termbuf();
                tty_setecho(1);
                set_termbuf();
            }
            changeok++;
            break;

        case TELOPT_BINARY:
            init_termbuf();
            tty_binaryout(1);
            set_termbuf();
            changeok++;
            break;

        case TELOPT_SGA:
#if defined(LINEMODE) && defined(KLUDGELINEMODE)
            /*
             * If kludge linemode is in use, then we must
             * process an incoming do SGA for linemode
             * purposes.
             */
            if (lmodetype == KLUDGE_LINEMODE) {
                /*
                 * Receipt of "do SGA" in kludge
                 * linemode is the peer asking us to
                 * turn off linemode.  Make note of
                 * the request.
                 */
                clientstat(TELOPT_LINEMODE, WONT, 0);
                /*
                 * If linemode did not get turned off
                 * then don't tell peer that we did.
                 * Breaking here forces a wont SGA to
                 * be returned.
                 */
                if (linemode)  break;
            }
#else
            turn_on_sga = 0;
#endif	/* defined(LINEMODE) && defined(KLUDGELINEMODE) */
            changeok++;
            break;

        case TELOPT_STATUS:
            changeok++;
            break;

        case TELOPT_TM:
            /*
             * Special case for TM.  We send a WILL, but
             * pretend we sent a WONT.
             */
            send_will(option, 0);
            set_my_want_state_wont(option);
            set_my_state_wont(option);
            return;

        case TELOPT_LOGOUT:
            /*
             * When we get a LOGOUT option, respond
             * with a WILL LOGOUT, make sure that
             * it gets written out to the network,
             * and then just go away...
             */
            set_my_want_state_will(TELOPT_LOGOUT);
            send_will(TELOPT_LOGOUT, 0);
            set_my_state_will(TELOPT_LOGOUT);
            (void)netflush();
            cleanup(0);
            /* NOT REACHED */
            break;

#if defined(ENCRYPT)
        case TELOPT_ENCRYPT:
            changeok++;
            break;
#endif
        case TELOPT_LINEMODE:
        case TELOPT_TTYPE:
        case TELOPT_NAWS:
        case TELOPT_TSPEED:
        case TELOPT_LFLOW:
        case TELOPT_XDISPLOC:
        case TELOPT_ENVIRON:
        default:
            break;
        }
        if (changeok) {
            set_my_want_state_will(option);
            send_will(option, 0);
        }
        else {
            will_wont_resp[option]++;
            send_wont(option, 0);
        }
    }
    set_my_state_will(option);
}