1 // termstat.c

     2 //

     3 // © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.

     4 //

     5 /*

     6  * Copyright (c) 1989, 1993

     7  *	The Regents of the University of California.  All rights reserved.

     8  *

     9  * Redistribution and use in source and binary forms, with or without

    10  * modification, are permitted provided that the following conditions

    11  * are met:

    12  * 1. Redistributions of source code must retain the above copyright

    13  *    notice, this list of conditions and the following disclaimer.

    14  * 2. Redistributions in binary form must reproduce the above copyright

    15  *    notice, this list of conditions and the following disclaimer in the

    16  *    documentation and/or other materials provided with the distribution.

    17  * 3. 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 #ifndef __SYMBIAN32__

    37 __RCSID("$Heimdal: termstat.c,v 1.12 2001/08/29 00:45:23 assar Exp $"

    38         "$NetBSD: termstat.c,v 1.2 2003/08/07 09:15:30 agc Exp $");

    39 #endif

    40 

    41 /*

    42  * local variables

    43  */

    44 int def_tspeed = -1, def_rspeed = -1;

    45 #ifdef	TIOCSWINSZ

    46 int def_row = 0, def_col = 0;

    47 #endif

    48 

    49 /*

    50  * flowstat

    51  *

    52  * Check for changes to flow control

    53  */

    54 void

    55 flowstat(void)

    56 {

    57     if (his_state_is_will(TELOPT_LFLOW)) {

    58 	if (tty_flowmode() != flowmode) {

    59 	    flowmode = tty_flowmode();

    60 	    output_data("%c%c%c%c%c%c",

    61 			IAC, SB, TELOPT_LFLOW,

    62 			flowmode ? LFLOW_ON : LFLOW_OFF,

    63 			IAC, SE);

    64 	}

    65 	if (tty_restartany() != restartany) {

    66 	    restartany = tty_restartany();

    67 	    output_data("%c%c%c%c%c%c",

    68 			IAC, SB, TELOPT_LFLOW,

    69 			restartany ? LFLOW_RESTART_ANY

    70 			: LFLOW_RESTART_XON,

    71 			IAC, SE);

    72 	}

    73     }

    74 }

    75 

    76 /*

    77  * clientstat

    78  *

    79  * Process linemode related requests from the client.

    80  * Client can request a change to only one of linemode, editmode or slc's

    81  * at a time, and if using kludge linemode, then only linemode may be

    82  * affected.

    83  */

    84 void

    85 clientstat(int code, int parm1, int parm2)

    86 {

    87     /*

    88      * Get a copy of terminal characteristics.

    89      */

    90     init_termbuf();

    91 

    92     /*

    93      * Process request from client. code tells what it is.

    94      */

    95     switch (code) {

    96     case TELOPT_NAWS:

    97 #ifdef	TIOCSWINSZ

    98 	{

    99 	    struct winsize ws;

   100 

   101 	    def_col = parm1;

   102 	    def_row = parm2;

   103 

   104 	    /*

   105 	     * Change window size as requested by client.

   106 	     */

   107 

   108 	    ws.ws_col = parm1;

   109 	    ws.ws_row = parm2;

   110 	    ioctl(ourpty, TIOCSWINSZ, (char *)&ws);

   111 	}

   112 #endif	/* TIOCSWINSZ */

   113 

   114     break;

   115 

   116     case TELOPT_TSPEED:

   117 	{

   118 	    def_tspeed = parm1;

   119 	    def_rspeed = parm2;

   120 	    /*

   121 	     * Change terminal speed as requested by client.

   122 	     * We set the receive speed first, so that if we can't

   123 	     * store seperate receive and transmit speeds, the transmit

   124 	     * speed will take precedence.

   125 	     */

   126 	    tty_rspeed(parm2);

   127 	    tty_tspeed(parm1);

   128 	    set_termbuf();

   129 

   130 	    break;

   131 

   132 	}  /* end of case TELOPT_TSPEED */

   133 

   134     default:

   135 	/* What? */

   136 	break;

   137     }  /* end of switch */

   138 

   139     netflush();

   140 

   141 }