201 lines
4.0 KiB
C
201 lines
4.0 KiB
C
/*
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* Copyright (c) 1988, 1990 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted provided
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* that: (1) source distributions retain this entire copyright notice and
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* comment, and (2) distributions including binaries display the following
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* acknowledgement: ``This product includes software developed by the
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* University of California, Berkeley and its contributors'' in the
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* documentation or other materials provided with the distribution and in
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* all advertising materials mentioning features or use of this software.
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* Neither the name of the University nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)terminal.c 5.1 (Berkeley) 9/14/90";
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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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Ring ttyoring, ttyiring;
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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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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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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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{
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TerminalNewMode(getconnmode()|(force?MODE_FORCE:0));
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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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