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("$Id$");
37
38 /*
39 * local variables
40 */
41 int def_tspeed = -1, def_rspeed = -1;
42 #ifdef TIOCSWINSZ
43 int def_row = 0, def_col = 0;
44 #endif
45
46 /*
47 * flowstat
48 *
49 * Check for changes to flow control
50 */
51 void
flowstat(void)52 flowstat(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 */
81 void
clientstat(int code,int parm1,int parm2)82 clientstat(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