/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.0 (the 'License'). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License." * * @APPLE_LICENSE_HEADER_END@ */ /* * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. */ #ifndef lint static char sccsid[] = "@(#)tn3270.c 8.2 (Berkeley) 5/30/95"; #endif /* not lint */ #include <sys/types.h> #include <arpa/telnet.h> #include "general.h" #include "defines.h" #include "ring.h" #include "externs.h" #include "fdset.h" #if defined(TN3270) #include "../ctlr/screen.h" #include "../general/globals.h" #include "../sys_curses/telextrn.h" #include "../ctlr/externs.h" #if defined(unix) || defined(__APPLE__) 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) */ #endif /* defined(unix) || defined(__APPLE__) */ 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) */ void init_3270() { #if defined(TN3270) #if defined(unix) || defined(__APPLE__) HaveInput = 0; sigiocount = 0; #endif /* defined(unix) || defined(__APPLE__) */ Sent3270TerminalType = 0; Ifrontp = Ibackp = Ibuf; init_ctlr(); /* Initialize some things */ init_keyboard(); init_screen(); init_system(); #endif /* defined(TN3270) */ } #if defined(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(buffer, count, done) register char *buffer; /* where the data is */ register int count; /* how much to send */ int done; /* is this the last of a logical block */ { register int loop, c; int origCount; origCount = count; while (count) { /* If not enough room for EORs, IACs, etc., wait */ if (NETROOM() < 6) { fd_set o; FD_ZERO(&o); netflush(); while (NETROOM() < 6) { FD_SET(net, &o); (void) select(net+1, (fd_set *) 0, &o, (fd_set *) 0, (struct timeval *) 0); 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); } #if defined(unix) || defined(__APPLE__) void inputAvailable(signo) int signo; { HaveInput = 1; sigiocount++; } #endif /* defined(unix) || defined(__APPLE__) */ void outputPurge() { (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 select). */ int DataToTerminal(buffer, count) register char *buffer; /* where the data is */ register int count; /* how much to send */ { register int c; int origCount; origCount = count; while (count) { if (TTYROOM() == 0) { #if defined(unix) || defined(__APPLE__) fd_set o; FD_ZERO(&o); #endif /* defined(unix) || defined(__APPLE__) */ (void) ttyflush(0); while (TTYROOM() == 0) { #if defined(unix) || defined(__APPLE__) FD_SET(tout, &o); (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0, (struct timeval *) 0); #endif /* defined(unix) || defined(__APPLE__) */ (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() { 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() { while (Push3270() || !DoTerminalOutput()) { #if defined(unix) || defined(__APPLE__) HaveInput = 0; #endif /* defined(unix) || defined(__APPLE__) */ ; } } /* StringToTerminal - output a null terminated string to the terminal */ void StringToTerminal(s) char *s; { int count; count = strlen(s); if (count) { (void) DataToTerminal(s, count); /* we know it always goes... */ } } #if ((!defined(NOT43)) || defined(PUTCHAR)) /* _putchar - output a single character to the terminal. This name is so that * curses(3x) can call us to send out data. */ void _putchar(c) char c; { #if defined(sun) /* SunOS 4.0 bug */ c &= 0x7f; #endif /* defined(sun) */ if (cursesdata) { Dump('>', &c, 1); } if (!TTYROOM()) { (void) DataToTerminal(&c, 1); } else { TTYADD(c); } } #endif /* ((!defined(NOT43)) || defined(PUTCHAR)) */ void SetIn3270() { 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() { /* * 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; } } #if defined(unix) || defined(__APPLE__) int settranscom(argc, argv) int argc; char *argv[]; { int i; if (argc == 1 && transcom) { transcom = 0; } if (argc == 1) { return 1; } transcom = tline; (void) strcpy(transcom, argv[1]); for (i = 2; i < argc; ++i) { (void) strcat(transcom, " "); (void) strcat(transcom, argv[i]); } return 1; } #endif /* defined(unix) || defined(__APPLE__) */ #endif /* defined(TN3270) */