/* * Copyright (c) 1989, 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. *//* a *lot* of ugly global definitions that really should be removed... */#include "telnetd.h"/* RCSID("$KTH: global.c,v 1.12 1997/05/11 06:29:59 assar Exp $"); *//* * Telnet server variable declarations */char	options[256];char	do_dont_resp[256];char	will_wont_resp[256];int	linemode;	/* linemode on/off */int	flowmode;	/* current flow control state */int	restartany;	/* restart output on any character state */#ifdef DIAGNOSTICSint	diagnostic;	/* telnet diagnostic capabilities */#endif /* DIAGNOSTICS */slcfun	slctab[NSLC + 1];	/* slc mapping table */char	terminaltype[41];/* * I/O data buffers, pointers, and counters. */char	ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;char	netibuf[BUFSIZ], *netip;char	netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;char	*neturg;		/* one past last bye of urgent data */int	pcc, ncc;int	ourpty, net;int	SYNCHing;		/* we are in TELNET SYNCH mode *//* * The following are some clocks used to decide how to interpret * the relationship between various variables. */struct clocks_t clocks;/* whether to log unauthenticated login attempts */int log_unauth;/* do not print warning if connection is not encrypted */int no_warn;/* * This function appends data to nfrontp and advances nfrontp. */intoutput_data (const char *format, ...){  va_list args;  size_t remaining;  int n;  va_start(args, format);  remaining = BUFSIZ - (nfrontp - netobuf);  if ((n = vsnprintf(nfrontp, remaining, format, args)) >= remaining || n < 0)    n = strlen(nfrontp);  nfrontp += n;  va_end(args);  return n;}