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/*
* 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 DIAGNOSTICS
int 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.
*/
int
output_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;
}
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