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/crypto/heimdal/appl/telnet/telnetd/termstat.c

https://bitbucket.org/freebsd/freebsd-head/
C | 138 lines | 58 code | 16 blank | 64 comment | 6 complexity | 5c5348c8d284d9a38d3c225cd66d8b72 MD5 | raw file
  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}