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

   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
  36 __RCSID("$Heimdal: termstat.c 10587 2001-08-29 00:45:23Z assar $"
  37         "$NetBSD$");
  38
  39 /*
  40  * local variables
  41  */
  42 int def_tspeed = -1, def_rspeed = -1;
  43 #ifdef  TIOCSWINSZ
  44 int def_row = 0, def_col = 0;
  45 #endif
  46
  47 /*
  48  * flowstat
  49  *
  50  * Check for changes to flow control
  51  */
  52 void
  53 flowstat(void)
  54 {
  55     if (his_state_is_will(TELOPT_LFLOW)) {
  56         if (tty_flowmode() != flowmode) {
  57             flowmode = tty_flowmode();
  58             output_data("%c%c%c%c%c%c",
  59                         IAC, SB, TELOPT_LFLOW,
  60                         flowmode ? LFLOW_ON : LFLOW_OFF,
  61                         IAC, SE);
  62         }
  63         if (tty_restartany() != restartany) {
  64             restartany = tty_restartany();
  65             output_data("%c%c%c%c%c%c",
  66                         IAC, SB, TELOPT_LFLOW,
  67                         restartany ? LFLOW_RESTART_ANY
  68                         : LFLOW_RESTART_XON,
  69                         IAC, SE);
  70         }
  71     }
  72 }
  73
  74 /*
  75  * clientstat
  76  *
  77  * Process linemode related requests from the client.
  78  * Client can request a change to only one of linemode, editmode or slc's
  79  * at a time, and if using kludge linemode, then only linemode may be
  80  * affected.
  81  */
  82 void
  83 clientstat(int code, int parm1, int parm2)
  84 {
  85     /*
  86      * Get a copy of terminal characteristics.
  87      */
  88     init_termbuf();
  89
  90     /*
  91      * Process request from client. code tells what it is.
  92      */
  93     switch (code) {
  94     case TELOPT_NAWS:
  95 #ifdef  TIOCSWINSZ
  96         {
  97             struct winsize ws;
  98
  99             def_col = parm1;
 100             def_row = parm2;
 101
 102             /*
 103              * Change window size as requested by client.
 104              */
 105
 106             ws.ws_col = parm1;
 107             ws.ws_row = parm2;
 108             ioctl(ourpty, TIOCSWINSZ, (char *)&ws);
 109         }
 110 #endif  /* TIOCSWINSZ */
 111
 112     break;
 113
 114     case TELOPT_TSPEED:
 115         {
 116             def_tspeed = parm1;
 117             def_rspeed = parm2;
 118             /*
 119              * Change terminal speed as requested by client.
 120              * We set the receive speed first, so that if we can't
 121              * store seperate receive and transmit speeds, the transmit
 122              * speed will take precedence.
 123              */
 124             tty_rspeed(parm2);
 125             tty_tspeed(parm1);
 126             set_termbuf();
 127
 128             break;
 129
 130         }  /* end of case TELOPT_TSPEED */
 131
 132     default:
 133         /* What? */
 134         break;
 135     }  /* end of switch */
 136
 137     netflush();
 138
 139 }