5c099b14c1
pull in just about all of the differences from the crypto-us telnet suite (which includes Kerberos 4 and connection encryption support). Also bring in the Kerberos 5 support from the Heimdal telnet, and frob a little so that it can work with the non-Heimdal telnet suite. There is still some work left to do, specifically: - Add Heimdal's ticket forwarding support to the Berkeley Kerberos 4 module. - Add connection encryption support to the Heimdal Kerberos 5 module. Hints on this can be taken from the MIT Kerberos 5 module which still exists in crypto-us. However, even with the shortcomings listed above, this is a better situation than using the stock Heimdal telnet suite, which does not understand the IPSec policy stuff, and is also based on much older code which contains bugs that we have already fixed in the NetBSD sources.
251 lines
5.6 KiB
C
251 lines
5.6 KiB
C
/* $NetBSD: terminal.c,v 1.7 2000/06/22 06:47:49 thorpej Exp $ */
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/*
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* Copyright (c) 1988, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
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#else
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__RCSID("$NetBSD: terminal.c,v 1.7 2000/06/22 06:47:49 thorpej Exp $");
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#endif
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#endif /* not lint */
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#include <arpa/telnet.h>
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#include <sys/types.h>
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#include "ring.h"
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#include "externs.h"
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#include "types.h"
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#ifdef ENCRYPTION
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#include <libtelnet/encrypt.h>
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#endif
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Ring ttyoring, ttyiring;
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unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
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int termdata; /* Debugging flag */
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#ifdef USE_TERMIO
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# ifndef VDISCARD
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cc_t termFlushChar;
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# endif
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# ifndef VLNEXT
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cc_t termLiteralNextChar;
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# endif
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# ifndef VSUSP
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cc_t termSuspChar;
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# endif
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# ifndef VWERASE
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cc_t termWerasChar;
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# endif
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# ifndef VREPRINT
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cc_t termRprntChar;
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# endif
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# ifndef VSTART
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cc_t termStartChar;
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# endif
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# ifndef VSTOP
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cc_t termStopChar;
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# endif
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# ifndef VEOL
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cc_t termForw1Char;
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# endif
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# ifndef VEOL2
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cc_t termForw2Char;
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# endif
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# ifndef VSTATUS
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cc_t termAytChar;
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# endif
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#else
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cc_t termForw2Char;
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cc_t termAytChar;
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#endif
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/*
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* initialize the terminal data structures.
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*/
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void
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init_terminal()
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{
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if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
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exit(1);
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}
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if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
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exit(1);
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}
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autoflush = TerminalAutoFlush();
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}
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/*
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* Send as much data as possible to the terminal.
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*
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* Return value:
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* -1: No useful work done, data waiting to go out.
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* 0: No data was waiting, so nothing was done.
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* 1: All waiting data was written out.
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* n: All data - n was written out.
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*/
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int
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ttyflush(drop)
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int drop;
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{
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register int n, n0, n1;
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n0 = ring_full_count(&ttyoring);
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if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
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if (drop) {
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TerminalFlushOutput();
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/* we leave 'n' alone! */
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} else {
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n = TerminalWrite(ttyoring.consume, n);
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}
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}
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if (n > 0) {
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if (termdata && n) {
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Dump('>', ttyoring.consume, n);
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}
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/*
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* If we wrote everything, and the full count is
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* larger than what we wrote, then write the
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* rest of the buffer.
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*/
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if (n1 == n && n0 > n) {
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n1 = n0 - n;
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if (!drop)
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n1 = TerminalWrite(ttyoring.bottom, n1);
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if (n1 > 0)
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n += n1;
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}
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ring_consumed(&ttyoring, n);
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}
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if (n < 0)
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return -1;
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if (n == n0) {
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if (n0)
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return -1;
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return 0;
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}
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return n0 - n + 1;
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}
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/*
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* These routines decides on what the mode should be (based on the values
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* of various global variables).
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*/
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int
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getconnmode()
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{
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extern int linemode;
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int mode = 0;
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#ifdef KLUDGELINEMODE
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extern int kludgelinemode;
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#endif
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if (In3270)
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return(MODE_FLOW);
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if (my_want_state_is_dont(TELOPT_ECHO))
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mode |= MODE_ECHO;
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if (localflow)
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mode |= MODE_FLOW;
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if (my_want_state_is_will(TELOPT_BINARY))
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mode |= MODE_INBIN;
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if (his_want_state_is_will(TELOPT_BINARY))
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mode |= MODE_OUTBIN;
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#ifdef KLUDGELINEMODE
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if (kludgelinemode) {
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if (my_want_state_is_dont(TELOPT_SGA)) {
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mode |= (MODE_TRAPSIG|MODE_EDIT);
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if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
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mode &= ~MODE_ECHO;
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}
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}
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return(mode);
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}
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#endif
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if (my_want_state_is_will(TELOPT_LINEMODE))
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mode |= linemode;
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return(mode);
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}
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void
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setconnmode(force)
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int force;
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{
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#ifdef ENCRYPTION
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static int enc_passwd = 0;
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#endif
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register int newmode;
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newmode = getconnmode()|(force?MODE_FORCE:0);
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TerminalNewMode(newmode);
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#ifdef ENCRYPTION
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if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
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if (my_want_state_is_will(TELOPT_ENCRYPT)
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&& (enc_passwd == 0) && !encrypt_output) {
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encrypt_request_start(0, 0);
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enc_passwd = 1;
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}
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} else {
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if (enc_passwd) {
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encrypt_request_end();
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enc_passwd = 0;
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}
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}
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#endif /* ENCRYPTION */
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}
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void
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setcommandmode()
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{
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TerminalNewMode(-1);
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}
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