1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "telnetd.h"
35
36RCSID("$Id$");
37
38/*
39 * local variables
40 */
41int def_tspeed = -1, def_rspeed = -1;
42#ifdef	TIOCSWINSZ
43int def_row = 0, def_col = 0;
44#endif
45
46/*
47 * flowstat
48 *
49 * Check for changes to flow control
50 */
51void
52flowstat(void)
53{
54    if (his_state_is_will(TELOPT_LFLOW)) {
55	if (tty_flowmode() != flowmode) {
56	    flowmode = tty_flowmode();
57	    output_data("%c%c%c%c%c%c",
58			IAC, SB, TELOPT_LFLOW,
59			flowmode ? LFLOW_ON : LFLOW_OFF,
60			IAC, SE);
61	}
62	if (tty_restartany() != restartany) {
63	    restartany = tty_restartany();
64	    output_data("%c%c%c%c%c%c",
65			IAC, SB, TELOPT_LFLOW,
66			restartany ? LFLOW_RESTART_ANY
67			: LFLOW_RESTART_XON,
68			IAC, SE);
69	}
70    }
71}
72
73/*
74 * clientstat
75 *
76 * Process linemode related requests from the client.
77 * Client can request a change to only one of linemode, editmode or slc's
78 * at a time, and if using kludge linemode, then only linemode may be
79 * affected.
80 */
81void
82clientstat(int code, int parm1, int parm2)
83{
84    /*
85     * Get a copy of terminal characteristics.
86     */
87    init_termbuf();
88
89    /*
90     * Process request from client. code tells what it is.
91     */
92    switch (code) {
93    case TELOPT_NAWS:
94#ifdef	TIOCSWINSZ
95	{
96	    struct winsize ws;
97
98	    def_col = parm1;
99	    def_row = parm2;
100
101	    /*
102	     * Change window size as requested by client.
103	     */
104
105	    ws.ws_col = parm1;
106	    ws.ws_row = parm2;
107	    ioctl(ourpty, TIOCSWINSZ, (char *)&ws);
108	}
109#endif	/* TIOCSWINSZ */
110
111    break;
112
113    case TELOPT_TSPEED:
114	{
115	    def_tspeed = parm1;
116	    def_rspeed = parm2;
117	    /*
118	     * Change terminal speed as requested by client.
119	     * We set the receive speed first, so that if we can't
120	     * store seperate receive and transmit speeds, the transmit
121	     * speed will take precedence.
122	     */
123	    tty_rspeed(parm2);
124	    tty_tspeed(parm1);
125	    set_termbuf();
126
127	    break;
128
129	}  /* end of case TELOPT_TSPEED */
130
131    default:
132	/* What? */
133	break;
134    }  /* end of switch */
135
136    netflush();
137
138}
139