blob: ccc001f200197c5e0ce4ba168a17600e012b9fd0 [file] [log] [blame]
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001/*
Damien Miller95def091999-11-25 00:26:21 +11002 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
Damien Millere4340be2000-09-16 13:29:08 +11005 *
6 * As far as I am concerned, the code I have written for this software
7 * can be used freely for any purpose. Any derived versions of this
8 * software must be clearly marked as such, and if the derived work is
9 * incompatible with the protocol description in the RFC file, it must be
10 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110011 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100012
Ben Lindstromae8e2d32001-04-14 23:13:02 +000013/*
14 * SSH2 tty modes support by Kevin Steves.
15 * Copyright (c) 2001 Kevin Steves. All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
27 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
28 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
31 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * Encoding and decoding of terminal modes in a portable way.
40 * Much of the format is defined in ttymodes.h; it is included multiple times
41 * into this file with the appropriate macro definitions to generate the
42 * suitable code.
43 */
44
Damien Millerd4a8b7e1999-10-27 13:42:43 +100045#include "includes.h"
Damien Miller48b03fc2002-01-22 23:11:40 +110046RCSID("$OpenBSD: ttymodes.c,v 1.16 2001/12/27 20:39:58 markus Exp $");
Damien Millerd4a8b7e1999-10-27 13:42:43 +100047
48#include "packet.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000049#include "log.h"
50#include "ssh1.h"
Ben Lindstromae8e2d32001-04-14 23:13:02 +000051#include "compat.h"
52#include "buffer.h"
53#include "bufaux.h"
Damien Millerd4a8b7e1999-10-27 13:42:43 +100054
Ben Lindstromae8e2d32001-04-14 23:13:02 +000055#define TTY_OP_END 0
56/*
57 * uint32 (u_int) follows speed in SSH1 and SSH2
58 */
59#define TTY_OP_ISPEED_PROTO1 192
60#define TTY_OP_OSPEED_PROTO1 193
61#define TTY_OP_ISPEED_PROTO2 128
62#define TTY_OP_OSPEED_PROTO2 129
Damien Millerd4a8b7e1999-10-27 13:42:43 +100063
Damien Miller95def091999-11-25 00:26:21 +110064/*
65 * Converts POSIX speed_t to a baud rate. The values of the
66 * constants for speed_t are not themselves portable.
67 */
Damien Miller4af51302000-04-16 11:18:38 +100068static int
Damien Miller95def091999-11-25 00:26:21 +110069speed_to_baud(speed_t speed)
Damien Millerd4a8b7e1999-10-27 13:42:43 +100070{
Damien Miller95def091999-11-25 00:26:21 +110071 switch (speed) {
72 case B0:
73 return 0;
74 case B50:
75 return 50;
76 case B75:
77 return 75;
78 case B110:
79 return 110;
80 case B134:
81 return 134;
82 case B150:
83 return 150;
84 case B200:
85 return 200;
86 case B300:
87 return 300;
88 case B600:
89 return 600;
90 case B1200:
91 return 1200;
92 case B1800:
93 return 1800;
94 case B2400:
95 return 2400;
96 case B4800:
97 return 4800;
98 case B9600:
99 return 9600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000100
101#ifdef B19200
Damien Miller95def091999-11-25 00:26:21 +1100102 case B19200:
103 return 19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000104#else /* B19200 */
105#ifdef EXTA
Damien Miller95def091999-11-25 00:26:21 +1100106 case EXTA:
107 return 19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000108#endif /* EXTA */
109#endif /* B19200 */
110
111#ifdef B38400
Damien Miller95def091999-11-25 00:26:21 +1100112 case B38400:
113 return 38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000114#else /* B38400 */
115#ifdef EXTB
Damien Miller95def091999-11-25 00:26:21 +1100116 case EXTB:
117 return 38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000118#endif /* EXTB */
119#endif /* B38400 */
120
121#ifdef B7200
Damien Miller95def091999-11-25 00:26:21 +1100122 case B7200:
123 return 7200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000124#endif /* B7200 */
125#ifdef B14400
Damien Miller95def091999-11-25 00:26:21 +1100126 case B14400:
127 return 14400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000128#endif /* B14400 */
129#ifdef B28800
Damien Miller95def091999-11-25 00:26:21 +1100130 case B28800:
131 return 28800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000132#endif /* B28800 */
133#ifdef B57600
Damien Miller95def091999-11-25 00:26:21 +1100134 case B57600:
135 return 57600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000136#endif /* B57600 */
137#ifdef B76800
Damien Miller95def091999-11-25 00:26:21 +1100138 case B76800:
139 return 76800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000140#endif /* B76800 */
141#ifdef B115200
Damien Miller95def091999-11-25 00:26:21 +1100142 case B115200:
143 return 115200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000144#endif /* B115200 */
145#ifdef B230400
Damien Miller95def091999-11-25 00:26:21 +1100146 case B230400:
147 return 230400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000148#endif /* B230400 */
Damien Miller95def091999-11-25 00:26:21 +1100149 default:
150 return 9600;
151 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000152}
153
Damien Miller95def091999-11-25 00:26:21 +1100154/*
155 * Converts a numeric baud rate to a POSIX speed_t.
156 */
Damien Miller4af51302000-04-16 11:18:38 +1000157static speed_t
Damien Miller95def091999-11-25 00:26:21 +1100158baud_to_speed(int baud)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000159{
Damien Miller95def091999-11-25 00:26:21 +1100160 switch (baud) {
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000161 case 0:
Damien Miller95def091999-11-25 00:26:21 +1100162 return B0;
163 case 50:
164 return B50;
165 case 75:
166 return B75;
167 case 110:
168 return B110;
169 case 134:
170 return B134;
171 case 150:
172 return B150;
173 case 200:
174 return B200;
175 case 300:
176 return B300;
177 case 600:
178 return B600;
179 case 1200:
180 return B1200;
181 case 1800:
182 return B1800;
183 case 2400:
184 return B2400;
185 case 4800:
186 return B4800;
187 case 9600:
188 return B9600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000189
190#ifdef B19200
Damien Miller95def091999-11-25 00:26:21 +1100191 case 19200:
192 return B19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000193#else /* B19200 */
194#ifdef EXTA
Damien Miller95def091999-11-25 00:26:21 +1100195 case 19200:
196 return EXTA;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000197#endif /* EXTA */
198#endif /* B19200 */
199
200#ifdef B38400
Damien Miller95def091999-11-25 00:26:21 +1100201 case 38400:
202 return B38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000203#else /* B38400 */
204#ifdef EXTB
Damien Miller95def091999-11-25 00:26:21 +1100205 case 38400:
206 return EXTB;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000207#endif /* EXTB */
208#endif /* B38400 */
209
210#ifdef B7200
Damien Miller95def091999-11-25 00:26:21 +1100211 case 7200:
212 return B7200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000213#endif /* B7200 */
214#ifdef B14400
Damien Miller95def091999-11-25 00:26:21 +1100215 case 14400:
216 return B14400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000217#endif /* B14400 */
218#ifdef B28800
Damien Miller95def091999-11-25 00:26:21 +1100219 case 28800:
220 return B28800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000221#endif /* B28800 */
222#ifdef B57600
Damien Miller95def091999-11-25 00:26:21 +1100223 case 57600:
224 return B57600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000225#endif /* B57600 */
226#ifdef B76800
Damien Miller95def091999-11-25 00:26:21 +1100227 case 76800:
228 return B76800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000229#endif /* B76800 */
230#ifdef B115200
Damien Miller95def091999-11-25 00:26:21 +1100231 case 115200:
232 return B115200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000233#endif /* B115200 */
234#ifdef B230400
Damien Miller95def091999-11-25 00:26:21 +1100235 case 230400:
236 return B230400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000237#endif /* B230400 */
Damien Miller95def091999-11-25 00:26:21 +1100238 default:
239 return B9600;
240 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000241}
242
Damien Miller95def091999-11-25 00:26:21 +1100243/*
244 * Encodes terminal modes for the terminal referenced by fd
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000245 * or tiop in a portable manner, and appends the modes to a packet
Damien Miller95def091999-11-25 00:26:21 +1100246 * being constructed.
247 */
Damien Miller4af51302000-04-16 11:18:38 +1000248void
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000249tty_make_modes(int fd, struct termios *tiop)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000250{
Damien Miller95def091999-11-25 00:26:21 +1100251 struct termios tio;
252 int baud;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000253 Buffer buf;
254 int tty_op_ospeed, tty_op_ispeed;
255 void (*put_arg)(Buffer *, u_int);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000256
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000257 buffer_init(&buf);
258 if (compat20) {
259 tty_op_ospeed = TTY_OP_OSPEED_PROTO2;
260 tty_op_ispeed = TTY_OP_ISPEED_PROTO2;
261 put_arg = buffer_put_int;
262 } else {
263 tty_op_ospeed = TTY_OP_OSPEED_PROTO1;
264 tty_op_ispeed = TTY_OP_ISPEED_PROTO1;
265 put_arg = (void (*)(Buffer *, u_int)) buffer_put_char;
Damien Miller95def091999-11-25 00:26:21 +1100266 }
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000267
268 if (tiop == NULL) {
269 if (tcgetattr(fd, &tio) == -1) {
270 log("tcgetattr: %.100s", strerror(errno));
271 goto end;
272 }
273 } else
274 tio = *tiop;
275
Damien Miller95def091999-11-25 00:26:21 +1100276 /* Store input and output baud rates. */
277 baud = speed_to_baud(cfgetospeed(&tio));
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000278 debug3("tty_make_modes: ospeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000279 buffer_put_char(&buf, tty_op_ospeed);
280 buffer_put_int(&buf, baud);
Damien Miller95def091999-11-25 00:26:21 +1100281 baud = speed_to_baud(cfgetispeed(&tio));
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000282 debug3("tty_make_modes: ispeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000283 buffer_put_char(&buf, tty_op_ispeed);
284 buffer_put_int(&buf, baud);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000285
Damien Miller95def091999-11-25 00:26:21 +1100286 /* Store values of mode flags. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000287#define TTYCHAR(NAME, OP) \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000288 debug3("tty_make_modes: %d %d", OP, tio.c_cc[NAME]); \
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000289 buffer_put_char(&buf, OP); \
290 put_arg(&buf, tio.c_cc[NAME]);
291
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000292#define TTYMODE(NAME, FIELD, OP) \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000293 debug3("tty_make_modes: %d %d", OP, ((tio.FIELD & NAME) != 0)); \
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000294 buffer_put_char(&buf, OP); \
295 put_arg(&buf, ((tio.FIELD & NAME) != 0));
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000296
297#include "ttymodes.h"
298
299#undef TTYCHAR
300#undef TTYMODE
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000301
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000302end:
Damien Miller95def091999-11-25 00:26:21 +1100303 /* Mark end of mode data. */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000304 buffer_put_char(&buf, TTY_OP_END);
305 if (compat20)
306 packet_put_string(buffer_ptr(&buf), buffer_len(&buf));
307 else
308 packet_put_raw(buffer_ptr(&buf), buffer_len(&buf));
309 buffer_free(&buf);
310 return;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000311}
312
Damien Miller95def091999-11-25 00:26:21 +1100313/*
314 * Decodes terminal modes for the terminal referenced by fd in a portable
315 * manner from a packet being read.
316 */
Damien Miller4af51302000-04-16 11:18:38 +1000317void
Damien Miller95def091999-11-25 00:26:21 +1100318tty_parse_modes(int fd, int *n_bytes_ptr)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000319{
Damien Miller95def091999-11-25 00:26:21 +1100320 struct termios tio;
321 int opcode, baud;
322 int n_bytes = 0;
323 int failure = 0;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000324 u_int (*get_arg)(void);
325 int arg, arg_size;
326
327 if (compat20) {
328 *n_bytes_ptr = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000329 debug3("tty_parse_modes: SSH2 n_bytes %d", *n_bytes_ptr);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000330 if (*n_bytes_ptr == 0)
331 return;
332 get_arg = packet_get_int;
333 arg_size = 4;
334 } else {
335 get_arg = packet_get_char;
336 arg_size = 1;
337 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000338
Damien Miller95def091999-11-25 00:26:21 +1100339 /*
340 * Get old attributes for the terminal. We will modify these
341 * flags. I am hoping that if there are any machine-specific
342 * modes, they will initially have reasonable values.
343 */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000344 if (tcgetattr(fd, &tio) == -1) {
345 log("tcgetattr: %.100s", strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +1100346 failure = -1;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000347 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000348
Damien Miller95def091999-11-25 00:26:21 +1100349 for (;;) {
350 n_bytes += 1;
351 opcode = packet_get_char();
352 switch (opcode) {
353 case TTY_OP_END:
354 goto set;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000355
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000356 /* XXX: future conflict possible */
357 case TTY_OP_ISPEED_PROTO1:
358 case TTY_OP_ISPEED_PROTO2:
Damien Miller95def091999-11-25 00:26:21 +1100359 n_bytes += 4;
360 baud = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000361 debug3("tty_parse_modes: ispeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000362 if (failure != -1 && cfsetispeed(&tio, baud_to_speed(baud)) == -1)
Damien Miller95def091999-11-25 00:26:21 +1100363 error("cfsetispeed failed for %d", baud);
364 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000365
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000366 /* XXX: future conflict possible */
367 case TTY_OP_OSPEED_PROTO1:
368 case TTY_OP_OSPEED_PROTO2:
Damien Miller95def091999-11-25 00:26:21 +1100369 n_bytes += 4;
370 baud = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000371 debug3("tty_parse_modes: ospeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000372 if (failure != -1 && cfsetospeed(&tio, baud_to_speed(baud)) == -1)
Damien Miller95def091999-11-25 00:26:21 +1100373 error("cfsetospeed failed for %d", baud);
374 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000375
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000376#define TTYCHAR(NAME, OP) \
377 case OP: \
378 n_bytes += arg_size; \
379 tio.c_cc[NAME] = get_arg(); \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000380 debug3("tty_parse_modes: %d %d", OP, tio.c_cc[NAME]); \
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000381 break;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000382#define TTYMODE(NAME, FIELD, OP) \
383 case OP: \
384 n_bytes += arg_size; \
385 if ((arg = get_arg())) \
386 tio.FIELD |= NAME; \
387 else \
388 tio.FIELD &= ~NAME; \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000389 debug3("tty_parse_modes: %d %d", OP, arg); \
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000390 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000391
392#include "ttymodes.h"
393
394#undef TTYCHAR
395#undef TTYMODE
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000396
Damien Miller95def091999-11-25 00:26:21 +1100397 default:
398 debug("Ignoring unsupported tty mode opcode %d (0x%x)",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100399 opcode, opcode);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000400 if (!compat20) {
401 /*
402 * SSH1:
403 * Opcodes 1 to 127 are defined to have
404 * a one-byte argument.
405 * Opcodes 128 to 159 are defined to have
406 * an integer argument.
407 */
408 if (opcode > 0 && opcode < 128) {
409 n_bytes += 1;
410 (void) packet_get_char();
411 break;
412 } else if (opcode >= 128 && opcode < 160) {
413 n_bytes += 4;
414 (void) packet_get_int();
415 break;
416 } else {
417 /*
418 * It is a truly undefined opcode (160 to 255).
419 * We have no idea about its arguments. So we
420 * must stop parsing. Note that some data may be
421 * left in the packet; hopefully there is nothing
422 * more coming after the mode data.
423 */
424 log("parse_tty_modes: unknown opcode %d", opcode);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000425 goto set;
426 }
Damien Miller95def091999-11-25 00:26:21 +1100427 } else {
428 /*
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000429 * SSH2:
Ben Lindstromac2f0032001-04-15 14:25:12 +0000430 * Opcodes 1 to 159 are defined to have
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000431 * a uint32 argument.
432 * Opcodes 160 to 255 are undefined and
433 * cause parsing to stop.
Damien Miller95def091999-11-25 00:26:21 +1100434 */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000435 if (opcode > 0 && opcode < 160) {
Damien Miller95def091999-11-25 00:26:21 +1100436 n_bytes += 4;
437 (void) packet_get_int();
438 break;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000439 } else {
440 log("parse_tty_modes: unknown opcode %d", opcode);
441 goto set;
Damien Miller95def091999-11-25 00:26:21 +1100442 }
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000443 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000444 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000445 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000446
Damien Miller95def091999-11-25 00:26:21 +1100447set:
448 if (*n_bytes_ptr != n_bytes) {
449 *n_bytes_ptr = n_bytes;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000450 log("parse_tty_modes: n_bytes_ptr != n_bytes: %d %d",
451 *n_bytes_ptr, n_bytes);
Damien Miller95def091999-11-25 00:26:21 +1100452 return; /* Don't process bytes passed */
453 }
454 if (failure == -1)
Ben Lindstromac2f0032001-04-15 14:25:12 +0000455 return; /* Packet parsed ok but tcgetattr() failed */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000456
Damien Miller95def091999-11-25 00:26:21 +1100457 /* Set the new modes for the terminal. */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000458 if (tcsetattr(fd, TCSANOW, &tio) == -1)
Damien Miller95def091999-11-25 00:26:21 +1100459 log("Setting tty modes failed: %.100s", strerror(errno));
460 return;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000461}