xref: /netbsd/libexec/telnetd/global.c (revision 0008303c)
1 /*	$NetBSD: global.c,v 1.9 2020/04/23 00:03:40 joerg Exp $	*/
2 
3 /*
4  * Copyright (c) 1989, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)global.c	8.1 (Berkeley) 6/4/93";
36 #else
37 __RCSID("$NetBSD: global.c,v 1.9 2020/04/23 00:03:40 joerg Exp $");
38 #endif
39 #endif /* not lint */
40 
41 /*
42  * Allocate global variables.  We do this
43  * by including the header file that defines
44  * them all as externs, but first we define
45  * the keyword "extern" to be nothing, so that
46  * we will actually allocate the space.
47  */
48 
49 #include <defs.h>
50 #include <ext.h>
51 
52 char	options[256];
53 char	do_dont_resp[256];
54 char	will_wont_resp[256];
55 int	linemode;	/* linemode on/off */
56 #ifdef	LINEMODE
57 int	uselinemode;	/* what linemode to use (on/off) */
58 int	editmode;	/* edit modes in use */
59 int	useeditmode;	/* edit modes to use */
60 int	alwayslinemode;	/* command line option */
61 # ifdef	KLUDGELINEMODE
62 int	lmodetype;	/* Client support for linemode */
63 # endif	/* KLUDGELINEMODE */
64 #endif	/* LINEMODE */
65 int	flowmode;	/* current flow control state */
66 int	restartany;	/* restart output on any character state */
67 #ifdef DIAGNOSTICS
68 int	diagnostic;	/* telnet diagnostic capabilities */
69 #endif /* DIAGNOSTICS */
70 #ifdef SECURELOGIN
71 int	require_secure_login;
72 #endif
73 #ifdef AUTHENTICATION
74 int	auth_level;
75 #endif
76 
77 slcfun	slctab[NSLC + 1];	/* slc mapping table */
78 char	terminaltype[41];
79 
80 /*
81  * I/O data buffers, pointers, and counters.
82  */
83 char	ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
84 char	netibuf[BUFSIZ], *netip;
85 char	netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
86 char	*neturg;		/* one past last bye of urgent data */
87 int	pcc, ncc;
88 int	pty, net;
89 char	*line;
90 int	SYNCHing;		/* we are in TELNET SYNCH mode */
91 
92 #ifdef	ENCRYPTION
93 char	*nclearto;
94 #endif	/* ENCRYPTION */
95 
96 struct clockstate clocks;
97