Exemplo n.º 1
0
void
setconnmode (int force)
{
#ifdef	ENCRYPTION
  static int enc_passwd = 0;
#endif /* ENCRYPTION */
  register int newmode;

  newmode = getconnmode () | (force ? MODE_FORCE : 0);

  TerminalNewMode (newmode);

#ifdef  ENCRYPTION
  if ((newmode & (MODE_ECHO | MODE_EDIT)) == MODE_EDIT)
    {
      if (my_want_state_is_will (TELOPT_ENCRYPT)
	  && (enc_passwd == 0) && !encrypt_output)
	{
	  encrypt_request_start (0, 0);
	  enc_passwd = 1;
	}
    }
  else
    {
      if (enc_passwd)
	{
	  encrypt_request_end ();
	  enc_passwd = 0;
	}
    }
#endif /* ENCRYPTION */

}
Exemplo n.º 2
0
static void
suboption(void)
{
    unsigned char subchar;

    printsub('<', subbuffer, SB_LEN()+2);
    switch (subchar = SB_GET()) {
    case TELOPT_TTYPE:
	if (my_want_state_is_wont(TELOPT_TTYPE))
	    return;
	if (SB_EOF() || SB_GET() != TELQUAL_SEND) {
	    return;
	} else {
	    const char *name;
	    unsigned char temp[50];
	    int len;

	    name = gettermname();
	    len = strlen(name) + 4 + 2;
	    if (len < NETROOM()) {
		sprintf(temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE,
				TELQUAL_IS, name, IAC, SE);
		ring_supply_data(&netoring, temp, len);
		printsub('>', &temp[2], len-2);
	    } else {
		ExitString("No room in buffer for terminal type.\n", 1);
		/*NOTREACHED*/
	    }
	}
	break;
    case TELOPT_TSPEED:
	if (my_want_state_is_wont(TELOPT_TSPEED))
	    return;
	if (SB_EOF())
	    return;
	if (SB_GET() == TELQUAL_SEND) {
	    long ospeed, ispeed;
	    unsigned char temp[50];
	    int len;

	    TerminalSpeeds(&ispeed, &ospeed);

	    sprintf((char *)temp, "%c%c%c%c%ld,%ld%c%c", IAC, SB, TELOPT_TSPEED,
		    TELQUAL_IS, ospeed, ispeed, IAC, SE);
	    len = strlen((char *)temp+4) + 4;	/* temp[3] is 0 ... */

	    if (len < NETROOM()) {
		ring_supply_data(&netoring, temp, len);
		printsub('>', temp+2, len - 2);
	    }
/*@*/	    else printf("lm_will: not enough room in buffer\n");
	}
	break;
    case TELOPT_LFLOW:
	if (my_want_state_is_wont(TELOPT_LFLOW))
	    return;
	if (SB_EOF())
	    return;
	switch(SB_GET()) {
	case LFLOW_RESTART_ANY:
	    restartany = 1;
	    break;
	case LFLOW_RESTART_XON:
	    restartany = 0;
	    break;
	case LFLOW_ON:
	    localflow = 1;
	    break;
	case LFLOW_OFF:
	    localflow = 0;
	    break;
	default:
	    return;
	}
	setcommandmode();
	setconnmode(0);
	break;

    case TELOPT_LINEMODE:
	if (my_want_state_is_wont(TELOPT_LINEMODE))
	    return;
	if (SB_EOF())
	    return;
	switch (SB_GET()) {
	case WILL:
	    lm_will(subpointer, SB_LEN());
	    break;
	case WONT:
	    lm_wont(subpointer, SB_LEN());
	    break;
	case DO:
	    lm_do(subpointer, SB_LEN());
	    break;
	case DONT:
	    lm_dont(subpointer, SB_LEN());
	    break;
	case LM_SLC:
	    slc(subpointer, SB_LEN());
	    break;
	case LM_MODE:
	    lm_mode(subpointer, SB_LEN(), 0);
	    break;
	default:
	    break;
	}
	break;

#ifdef	OLD_ENVIRON
    case TELOPT_OLD_ENVIRON:
#endif
    case TELOPT_NEW_ENVIRON:
	if (SB_EOF())
	    return;
	switch(SB_PEEK()) {
	case TELQUAL_IS:
	case TELQUAL_INFO:
	    if (my_want_state_is_dont(subchar))
		return;
	    break;
	case TELQUAL_SEND:
	    if (my_want_state_is_wont(subchar)) {
		return;
	    }
	    break;
	default:
	    return;
	}
	env_opt(subpointer, SB_LEN());
	break;

    case TELOPT_XDISPLOC:
	if (my_want_state_is_wont(TELOPT_XDISPLOC))
	    return;
	if (SB_EOF())
	    return;
	if (SB_GET() == TELQUAL_SEND) {
	    unsigned char temp[50], *dp;
	    int len;

	    if ((dp = env_getvalue("DISPLAY")) == NULL ||
		strlen(dp) > sizeof(temp) - 7) {
		/*
		 * Something happened, we no longer have a DISPLAY
		 * variable.  Or it is too long.  So, turn off the option.
		 */
		send_wont(TELOPT_XDISPLOC, 1);
		break;
	    }
	    snprintf(temp, sizeof(temp), "%c%c%c%c%s%c%c", IAC, SB,
		    TELOPT_XDISPLOC, TELQUAL_IS, dp, IAC, SE);
	    len = strlen((char *)temp+4) + 4;	/* temp[3] is 0 ... */

	    if (len < NETROOM()) {
		ring_supply_data(&netoring, temp, len);
		printsub('>', temp+2, len - 2);
	    }
/*@*/	    else printf("lm_will: not enough room in buffer\n");
	}
	break;

#ifdef	AUTHENTICATION
	case TELOPT_AUTHENTICATION: {
		if (!autologin)
			break;
		if (SB_EOF())
			return;
		switch(SB_GET()) {
		case TELQUAL_IS:
			if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
				return;
			auth_is(subpointer, SB_LEN());
			break;
		case TELQUAL_SEND:
			if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
				return;
			auth_send(subpointer, SB_LEN());
			break;
		case TELQUAL_REPLY:
			if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
				return;
			auth_reply(subpointer, SB_LEN());
			break;
		case TELQUAL_NAME:
			if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
				return;
			auth_name(subpointer, SB_LEN());
			break;
		}
	}
	break;
#endif
#ifdef	ENCRYPTION
	case TELOPT_ENCRYPT:
		if (SB_EOF())
			return;
		switch(SB_GET()) {
		case ENCRYPT_START:
			if (my_want_state_is_dont(TELOPT_ENCRYPT))
				return;
			encrypt_start(subpointer, SB_LEN());
			break;
		case ENCRYPT_END:
			if (my_want_state_is_dont(TELOPT_ENCRYPT))
				return;
			encrypt_end();
			break;
		case ENCRYPT_SUPPORT:
			if (my_want_state_is_wont(TELOPT_ENCRYPT))
				return;
			encrypt_support(subpointer, SB_LEN());
			break;
		case ENCRYPT_REQSTART:
			if (my_want_state_is_wont(TELOPT_ENCRYPT))
				return;
			encrypt_request_start(subpointer, SB_LEN());
			break;
		case ENCRYPT_REQEND:
			if (my_want_state_is_wont(TELOPT_ENCRYPT))
				return;
			/*
			 * We can always send an REQEND so that we cannot
			 * get stuck encrypting.  We should only get this
			 * if we have been able to get in the correct mode
			 * anyhow.
			 */
			encrypt_request_end();
			break;
		case ENCRYPT_IS:
			if (my_want_state_is_dont(TELOPT_ENCRYPT))
				return;
			encrypt_is(subpointer, SB_LEN());
			break;
		case ENCRYPT_REPLY:
			if (my_want_state_is_wont(TELOPT_ENCRYPT))
				return;
			encrypt_reply(subpointer, SB_LEN());
			break;
		case ENCRYPT_ENC_KEYID:
			if (my_want_state_is_dont(TELOPT_ENCRYPT))
				return;
			encrypt_enc_keyid(subpointer, SB_LEN());
			break;
		case ENCRYPT_DEC_KEYID:
			if (my_want_state_is_wont(TELOPT_ENCRYPT))
				return;
			encrypt_dec_keyid(subpointer, SB_LEN());
			break;
		default:
			break;
		}
		break;
#endif	/* ENCRYPTION */
    default:
	break;
    }
}