129088Smarkm/* 229088Smarkm * Copyright (c) 1988, 1990, 1993 329088Smarkm * The Regents of the University of California. All rights reserved. 429088Smarkm * 529088Smarkm * Redistribution and use in source and binary forms, with or without 629088Smarkm * modification, are permitted provided that the following conditions 729088Smarkm * are met: 829088Smarkm * 1. Redistributions of source code must retain the above copyright 929088Smarkm * notice, this list of conditions and the following disclaimer. 1029088Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1129088Smarkm * notice, this list of conditions and the following disclaimer in the 1229088Smarkm * documentation and/or other materials provided with the distribution. 1329088Smarkm * 3. All advertising materials mentioning features or use of this software 1429088Smarkm * must display the following acknowledgement: 1529088Smarkm * This product includes software developed by the University of 1629088Smarkm * California, Berkeley and its contributors. 1729088Smarkm * 4. Neither the name of the University nor the names of its contributors 1829088Smarkm * may be used to endorse or promote products derived from this software 1929088Smarkm * without specific prior written permission. 2029088Smarkm * 2129088Smarkm * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2229088Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2329088Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2429088Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2529088Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2629088Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2729088Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2829088Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2929088Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3029088Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3129088Smarkm * SUCH DAMAGE. 3229088Smarkm */ 3329088Smarkm 34114630Sobrien#if 0 3529088Smarkm#ifndef lint 3629181Smarkmstatic const char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95"; 3763248Speter#endif 38114630Sobrien#endif 39114630Sobrien#include <sys/cdefs.h> 40114630Sobrien__FBSDID("$FreeBSD$"); 4129088Smarkm 4229088Smarkm#include <arpa/telnet.h> 4329088Smarkm#include <sys/types.h> 4429088Smarkm 4596385Salfred#include <stdlib.h> 4696385Salfred 4729088Smarkm#include "ring.h" 4829088Smarkm 4929088Smarkm#include "externs.h" 5029088Smarkm#include "types.h" 5129088Smarkm 5287139Smarkm#ifdef ENCRYPTION 5329181Smarkm#include <libtelnet/encrypt.h> 5429181Smarkm#endif 5529181Smarkm 5629088SmarkmRing ttyoring, ttyiring; 5729088Smarkmunsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ]; 5829088Smarkm 5929088Smarkmint termdata; /* Debugging flag */ 6029088Smarkm 6129088Smarkm#ifdef USE_TERMIO 6229088Smarkm# ifndef VDISCARD 6329088Smarkmcc_t termFlushChar; 6429088Smarkm# endif 6529088Smarkm# ifndef VLNEXT 6629088Smarkmcc_t termLiteralNextChar; 6729088Smarkm# endif 6829088Smarkm# ifndef VSUSP 6929088Smarkmcc_t termSuspChar; 7029088Smarkm# endif 7129088Smarkm# ifndef VWERASE 7229088Smarkmcc_t termWerasChar; 7329088Smarkm# endif 7429088Smarkm# ifndef VREPRINT 7529088Smarkmcc_t termRprntChar; 7629088Smarkm# endif 7729088Smarkm# ifndef VSTART 7829088Smarkmcc_t termStartChar; 7929088Smarkm# endif 8029088Smarkm# ifndef VSTOP 8129088Smarkmcc_t termStopChar; 8229088Smarkm# endif 8329088Smarkm# ifndef VEOL 8429088Smarkmcc_t termForw1Char; 8529088Smarkm# endif 8629088Smarkm# ifndef VEOL2 8729088Smarkmcc_t termForw2Char; 8829088Smarkm# endif 8929088Smarkm# ifndef VSTATUS 9029088Smarkmcc_t termAytChar; 9129088Smarkm# endif 9229088Smarkm#else 9329088Smarkmcc_t termForw2Char; 9429088Smarkmcc_t termAytChar; 9529088Smarkm#endif 9629088Smarkm 9729088Smarkm/* 9829088Smarkm * initialize the terminal data structures. 9929088Smarkm */ 10029088Smarkm 10187139Smarkmvoid 10287139Smarkminit_terminal(void) 10329088Smarkm{ 10429088Smarkm if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) { 10529088Smarkm exit(1); 10629088Smarkm } 10729088Smarkm if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) { 10829088Smarkm exit(1); 10929088Smarkm } 11029088Smarkm autoflush = TerminalAutoFlush(); 11129088Smarkm} 11229088Smarkm 11329088Smarkm/* 114207449Sjilles * Send as much data as possible to the terminal, else exits if 115207449Sjilles * it encounters a permanent failure when writing to the tty. 11629088Smarkm * 11729088Smarkm * Return value: 11829088Smarkm * -1: No useful work done, data waiting to go out. 11929088Smarkm * 0: No data was waiting, so nothing was done. 12029088Smarkm * 1: All waiting data was written out. 12129088Smarkm * n: All data - n was written out. 12229088Smarkm */ 12329088Smarkm 12487139Smarkmint 12587139Smarkmttyflush(int drop) 12629088Smarkm{ 12787139Smarkm int n, n0, n1; 12829088Smarkm 12929088Smarkm n0 = ring_full_count(&ttyoring); 13029088Smarkm if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) { 13129088Smarkm if (drop) { 13229088Smarkm TerminalFlushOutput(); 13329088Smarkm /* we leave 'n' alone! */ 13429088Smarkm } else { 13529088Smarkm n = TerminalWrite(ttyoring.consume, n); 13629088Smarkm } 13729088Smarkm } 13829088Smarkm if (n > 0) { 13929088Smarkm if (termdata && n) { 14029088Smarkm Dump('>', ttyoring.consume, n); 14129088Smarkm } 14229088Smarkm /* 14329088Smarkm * If we wrote everything, and the full count is 14429088Smarkm * larger than what we wrote, then write the 14529088Smarkm * rest of the buffer. 14629088Smarkm */ 14729088Smarkm if (n1 == n && n0 > n) { 14829088Smarkm n1 = n0 - n; 14929088Smarkm if (!drop) 15029088Smarkm n1 = TerminalWrite(ttyoring.bottom, n1); 15129088Smarkm if (n1 > 0) 15229088Smarkm n += n1; 15329088Smarkm } 15429088Smarkm ring_consumed(&ttyoring, n); 15529088Smarkm } 156207449Sjilles if (n < 0) { 157207449Sjilles if (errno == EAGAIN || errno == EINTR) { 158207449Sjilles return -1; 159207449Sjilles } else { 160207449Sjilles ring_consumed(&ttyoring, ring_full_count(&ttyoring)); 161207449Sjilles setconnmode(0); 162207449Sjilles setcommandmode(); 163207449Sjilles NetClose(net); 164207449Sjilles fprintf(stderr, "Write error on local output.\n"); 165207449Sjilles exit(1); 166207449Sjilles } 16729088Smarkm return -1; 168207449Sjilles } 16929088Smarkm if (n == n0) { 17029088Smarkm if (n0) 17129088Smarkm return -1; 17229088Smarkm return 0; 17329088Smarkm } 17429088Smarkm return n0 - n + 1; 17529088Smarkm} 17629088Smarkm 17729088Smarkm 17829088Smarkm/* 17929088Smarkm * These routines decides on what the mode should be (based on the values 18029088Smarkm * of various global variables). 18129088Smarkm */ 18229088Smarkm 18329088Smarkm 18487139Smarkmint 18587139Smarkmgetconnmode(void) 18629088Smarkm{ 18729088Smarkm extern int linemode; 18829088Smarkm int mode = 0; 18929088Smarkm#ifdef KLUDGELINEMODE 19029088Smarkm extern int kludgelinemode; 19129088Smarkm#endif 19229088Smarkm 19329088Smarkm if (my_want_state_is_dont(TELOPT_ECHO)) 19429088Smarkm mode |= MODE_ECHO; 19529088Smarkm 19629088Smarkm if (localflow) 19729088Smarkm mode |= MODE_FLOW; 19829088Smarkm 19929088Smarkm if (my_want_state_is_will(TELOPT_BINARY)) 20029088Smarkm mode |= MODE_INBIN; 20129088Smarkm 20229088Smarkm if (his_want_state_is_will(TELOPT_BINARY)) 20329088Smarkm mode |= MODE_OUTBIN; 20429088Smarkm 20529088Smarkm#ifdef KLUDGELINEMODE 20629088Smarkm if (kludgelinemode) { 20729088Smarkm if (my_want_state_is_dont(TELOPT_SGA)) { 20829088Smarkm mode |= (MODE_TRAPSIG|MODE_EDIT); 20929088Smarkm if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) { 21029088Smarkm mode &= ~MODE_ECHO; 21129088Smarkm } 21229088Smarkm } 21329088Smarkm return(mode); 21429088Smarkm } 21529088Smarkm#endif 21629088Smarkm if (my_want_state_is_will(TELOPT_LINEMODE)) 21729088Smarkm mode |= linemode; 21829088Smarkm return(mode); 21929088Smarkm} 22029088Smarkm 22187139Smarkmvoid 22287139Smarkmsetconnmode(int force) 22329088Smarkm{ 22429088Smarkm#ifdef ENCRYPTION 22529088Smarkm static int enc_passwd = 0; 22629088Smarkm#endif /* ENCRYPTION */ 22787139Smarkm int newmode; 22829088Smarkm 22929088Smarkm newmode = getconnmode()|(force?MODE_FORCE:0); 23029088Smarkm 23129088Smarkm TerminalNewMode(newmode); 23229088Smarkm 23329088Smarkm#ifdef ENCRYPTION 23429088Smarkm if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) { 23529088Smarkm if (my_want_state_is_will(TELOPT_ENCRYPT) 23629088Smarkm && (enc_passwd == 0) && !encrypt_output) { 23729088Smarkm encrypt_request_start(0, 0); 23829088Smarkm enc_passwd = 1; 23929088Smarkm } 24029088Smarkm } else { 24129088Smarkm if (enc_passwd) { 24229088Smarkm encrypt_request_end(); 24329088Smarkm enc_passwd = 0; 24429088Smarkm } 24529088Smarkm } 24629088Smarkm#endif /* ENCRYPTION */ 24729088Smarkm 24829088Smarkm} 24929088Smarkm 25087139Smarkmvoid 25187139Smarkmsetcommandmode(void) 25229088Smarkm{ 25329088Smarkm TerminalNewMode(-1); 25429088Smarkm} 255