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-rw-r--r--comms/tn3270/files/telnet/tn3270.c395
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diff --git a/comms/tn3270/files/telnet/tn3270.c b/comms/tn3270/files/telnet/tn3270.c
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--- a/comms/tn3270/files/telnet/tn3270.c
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-/* $NetBSD: tn3270.c,v 1.1.1.1 2010/01/17 01:33:32 dholland Exp $ */
-/* From NetBSD: tn3270.c,v 1.22 2006/10/07 17:27:57 elad Exp */
-
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)tn3270.c 8.2 (Berkeley) 5/30/95";
-#else
-__RCSID("$NetBSD: tn3270.c,v 1.1.1.1 2010/01/17 01:33:32 dholland Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <arpa/telnet.h>
-#include <unistd.h>
-#include <poll.h>
-
-#include "general.h"
-#include "defines.h"
-#include "ring.h"
-#include "externs.h"
-
-#ifdef TN3270
-
-#include "../ctlr/screen.h"
-#include "../ctlr/declare.h"
-
-#include "../ascii/state.h"
-
-#include "../general/globals.h"
-
-#include "../sys_curses/telextrn.h"
-
-int
- HaveInput, /* There is input available to scan */
- cursesdata, /* Do we dump curses data? */
- sigiocount; /* Number of times we got a SIGIO */
-
-char tline[200];
-char *transcom = 0; /* transparent mode command (default: none) */
-
-char Ibuf[8*BUFSIZ], *Ifrontp, *Ibackp;
-
-static char sb_terminal[] = { IAC, SB,
- TELOPT_TTYPE, TELQUAL_IS,
- 'I', 'B', 'M', '-', '3', '2', '7', '8', '-', '2',
- IAC, SE };
-#define SBTERMMODEL 13
-
-static int
- Sent3270TerminalType; /* Have we said we are a 3270? */
-
-#endif /* defined(TN3270) */
-
-
-#ifdef TN3270
-void
-init_3270(void)
-{
- HaveInput = 0;
- sigiocount = 0;
- Sent3270TerminalType = 0;
- Ifrontp = Ibackp = Ibuf;
- init_ctlr(); /* Initialize some things */
- init_keyboard();
- init_screen();
- init_system();
-}
-#endif /* defined(TN3270) */
-
-
-#ifdef TN3270
-
-/*
- * DataToNetwork - queue up some data to go to network. If "done" is set,
- * then when last byte is queued, we add on an IAC EOR sequence (so,
- * don't call us with "done" until you want that done...)
- *
- * We actually do send all the data to the network buffer, since our
- * only client needs for us to do that.
- */
-
-int
-DataToNetwork(char *buffer, /* where the data is */
- int count, /* how much to send */
- int done) /* is this the last of a logical block */
-{
- int loop, c;
- int origCount;
-
- origCount = count;
-
- while (count) {
- /* If not enough room for EORs, IACs, etc., wait */
- if (NETROOM() < 6) {
- struct pollfd set[1];
-
- set[0].fd = net;
- set[0].events = POLLOUT;
- netflush();
- while (NETROOM() < 6) {
- (void) poll(set, 1, INFTIM);
- netflush();
- }
- }
- c = ring_empty_count(&netoring);
- if (c > count) {
- c = count;
- }
- loop = c;
- while (loop) {
- if (((unsigned char)*buffer) == IAC) {
- break;
- }
- buffer++;
- loop--;
- }
- if ((c = c-loop)) {
- ring_supply_data(&netoring, buffer-c, c);
- count -= c;
- }
- if (loop) {
- NET2ADD(IAC, IAC);
- count--;
- buffer++;
- }
- }
-
- if (done) {
- NET2ADD(IAC, EOR);
- netflush(); /* try to move along as quickly as ... */
- }
- return(origCount - count);
-}
-
-
-void
-inputAvailable(int signo)
-{
- HaveInput = 1;
- sigiocount++;
-}
-
-void
-outputPurge(void)
-{
- (void) ttyflush(1);
-}
-
-
-/*
- * The following routines are places where the various tn3270
- * routines make calls into telnet.c.
- */
-
-/*
- * DataToTerminal - queue up some data to go to terminal.
- *
- * Note: there are people who call us and depend on our processing
- * *all* the data at one time (thus the poll).
- */
-
-int
-DataToTerminal(
- char *buffer, /* where the data is */
- int count) /* how much to send */
-{
- int c;
- int origCount;
-
- origCount = count;
-
- while (count) {
- if (TTYROOM() == 0) {
- struct pollfd set[1];
-
- set[0].fd = tout;
- set[0].events = POLLOUT;
- (void) ttyflush(0);
- while (TTYROOM() == 0) {
- (void) poll(set, 1, INFTIM);
- (void) ttyflush(0);
- }
- }
- c = TTYROOM();
- if (c > count) {
- c = count;
- }
- ring_supply_data(&ttyoring, buffer, c);
- count -= c;
- buffer += c;
- }
- return(origCount);
-}
-
-
-/*
- * Push3270 - Try to send data along the 3270 output (to screen) direction.
- */
-
-int
-Push3270(void)
-{
- int save = ring_full_count(&netiring);
-
- if (save) {
- if (Ifrontp+save > Ibuf+sizeof Ibuf) {
- if (Ibackp != Ibuf) {
- memmove(Ibuf, Ibackp, Ifrontp-Ibackp);
- Ifrontp -= (Ibackp-Ibuf);
- Ibackp = Ibuf;
- }
- }
- if (Ifrontp+save < Ibuf+sizeof Ibuf) {
- (void)telrcv();
- }
- }
- return save != ring_full_count(&netiring);
-}
-
-
-/*
- * Finish3270 - get the last dregs of 3270 data out to the terminal
- * before quitting.
- */
-
-void
-Finish3270(void)
-{
- while (Push3270() || !DoTerminalOutput()) {
- HaveInput = 0;
- ;
- }
-}
-
-
-/* StringToTerminal - output a null terminated string to the terminal */
-
-void
-StringToTerminal(char *s)
-{
- int count;
-
- count = strlen(s);
- if (count) {
- (void) DataToTerminal(s, count); /* we know it always goes... */
- }
-}
-
-
-/* _putchar - output a single character to the terminal. This name is so that
- * curses(3x) can call us to send out data.
- */
-
-int
-_putchar(int cc)
-{
- char c = (char)cc;
- if (cursesdata) {
- Dump('>', &c, 1);
- }
- if (!TTYROOM()) {
- (void) DataToTerminal(&c, 1);
- } else {
- TTYADD(c);
- }
-
- return (0);
-}
-
-void
-SetIn3270(void)
-{
- if (Sent3270TerminalType && my_want_state_is_will(TELOPT_BINARY)
- && my_want_state_is_do(TELOPT_BINARY) && !donebinarytoggle) {
- if (!In3270) {
- In3270 = 1;
- Init3270(); /* Initialize 3270 functions */
- /* initialize terminal key mapping */
- InitTerminal(); /* Start terminal going */
- setconnmode(0);
- }
- } else {
- if (In3270) {
- StopScreen(1);
- In3270 = 0;
- Stop3270(); /* Tell 3270 we aren't here anymore */
- setconnmode(0);
- }
- }
-}
-
-/*
- * tn3270_ttype()
- *
- * Send a response to a terminal type negotiation.
- *
- * Return '0' if no more responses to send; '1' if a response sent.
- */
-
-int
-tn3270_ttype(void)
-{
- /*
- * Try to send a 3270 type terminal name. Decide which one based
- * on the format of our screen, and (in the future) color
- * capaiblities.
- */
- InitTerminal(); /* Sets MaxNumberColumns, MaxNumberLines */
- if ((MaxNumberLines >= 24) && (MaxNumberColumns >= 80)) {
- Sent3270TerminalType = 1;
- if ((MaxNumberLines >= 27) && (MaxNumberColumns >= 132)) {
- MaxNumberLines = 27;
- MaxNumberColumns = 132;
- sb_terminal[SBTERMMODEL] = '5';
- } else if (MaxNumberLines >= 43) {
- MaxNumberLines = 43;
- MaxNumberColumns = 80;
- sb_terminal[SBTERMMODEL] = '4';
- } else if (MaxNumberLines >= 32) {
- MaxNumberLines = 32;
- MaxNumberColumns = 80;
- sb_terminal[SBTERMMODEL] = '3';
- } else {
- MaxNumberLines = 24;
- MaxNumberColumns = 80;
- sb_terminal[SBTERMMODEL] = '2';
- }
- NumberLines = 24; /* before we start out... */
- NumberColumns = 80;
- ScreenSize = NumberLines*NumberColumns;
- if ((MaxNumberLines*MaxNumberColumns) > MAXSCREENSIZE) {
- ExitString("Programming error: MAXSCREENSIZE too small.\n",
- 1);
- /*NOTREACHED*/
- }
- printsub('>', sb_terminal+2, sizeof sb_terminal-2);
- ring_supply_data(&netoring, sb_terminal, sizeof sb_terminal);
- return 1;
- } else {
- return 0;
- }
-}
-
-int
-settranscom(int argc, char *argv[])
-{
- int i;
-
- if (argc == 1 && transcom) {
- transcom = 0;
- }
- if (argc == 1) {
- return 1;
- }
- transcom = tline;
- (void) strlcpy(tline, argv[1], sizeof(tline));
- for (i = 2; i < argc; ++i) {
- (void) strlcat(tline, " ", sizeof(tline));
- (void) strlcat(tline, argv[i], sizeof(tline));
- }
- return 1;
-}
-
-#endif /* defined(TN3270) */
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