blob: 680909b222b4162cafd6e93d1e0e98018543da08 [file] [log] [blame]
Damien Millere3476ed2006-07-24 14:13:33 +10001/* $OpenBSD: ttymodes.c,v 1.25 2006/07/22 20:48:23 stevesk Exp $ */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002/*
Damien Miller95def091999-11-25 00:26:21 +11003 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * All rights reserved
Damien Millere4340be2000-09-16 13:29:08 +11006 *
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110012 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100013
Ben Lindstromae8e2d32001-04-14 23:13:02 +000014/*
15 * SSH2 tty modes support by Kevin Steves.
16 * Copyright (c) 2001 Kevin Steves. All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
29 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * Encoding and decoding of terminal modes in a portable way.
41 * Much of the format is defined in ttymodes.h; it is included multiple times
42 * into this file with the appropriate macro definitions to generate the
43 * suitable code.
44 */
45
Damien Millerd4a8b7e1999-10-27 13:42:43 +100046#include "includes.h"
Damien Miller99bd21e2006-03-15 11:11:28 +110047
Darren Tucker39972492006-07-12 22:22:46 +100048#include <errno.h>
Damien Millere3476ed2006-07-24 14:13:33 +100049#include <string.h>
Damien Miller99bd21e2006-03-15 11:11:28 +110050#include <termios.h>
Damien Millerd4a8b7e1999-10-27 13:42:43 +100051
52#include "packet.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000053#include "log.h"
54#include "ssh1.h"
Ben Lindstromae8e2d32001-04-14 23:13:02 +000055#include "compat.h"
56#include "buffer.h"
57#include "bufaux.h"
Damien Millerd4a8b7e1999-10-27 13:42:43 +100058
Ben Lindstromae8e2d32001-04-14 23:13:02 +000059#define TTY_OP_END 0
60/*
61 * uint32 (u_int) follows speed in SSH1 and SSH2
62 */
63#define TTY_OP_ISPEED_PROTO1 192
64#define TTY_OP_OSPEED_PROTO1 193
65#define TTY_OP_ISPEED_PROTO2 128
66#define TTY_OP_OSPEED_PROTO2 129
Damien Millerd4a8b7e1999-10-27 13:42:43 +100067
Damien Miller95def091999-11-25 00:26:21 +110068/*
69 * Converts POSIX speed_t to a baud rate. The values of the
70 * constants for speed_t are not themselves portable.
71 */
Damien Miller4af51302000-04-16 11:18:38 +100072static int
Damien Miller95def091999-11-25 00:26:21 +110073speed_to_baud(speed_t speed)
Damien Millerd4a8b7e1999-10-27 13:42:43 +100074{
Damien Miller95def091999-11-25 00:26:21 +110075 switch (speed) {
76 case B0:
77 return 0;
78 case B50:
79 return 50;
80 case B75:
81 return 75;
82 case B110:
83 return 110;
84 case B134:
85 return 134;
86 case B150:
87 return 150;
88 case B200:
89 return 200;
90 case B300:
91 return 300;
92 case B600:
93 return 600;
94 case B1200:
95 return 1200;
96 case B1800:
97 return 1800;
98 case B2400:
99 return 2400;
100 case B4800:
101 return 4800;
102 case B9600:
103 return 9600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000104
105#ifdef B19200
Damien Miller95def091999-11-25 00:26:21 +1100106 case B19200:
107 return 19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000108#else /* B19200 */
109#ifdef EXTA
Damien Miller95def091999-11-25 00:26:21 +1100110 case EXTA:
111 return 19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000112#endif /* EXTA */
113#endif /* B19200 */
114
115#ifdef B38400
Damien Miller95def091999-11-25 00:26:21 +1100116 case B38400:
117 return 38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000118#else /* B38400 */
119#ifdef EXTB
Damien Miller95def091999-11-25 00:26:21 +1100120 case EXTB:
121 return 38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000122#endif /* EXTB */
123#endif /* B38400 */
124
125#ifdef B7200
Damien Miller95def091999-11-25 00:26:21 +1100126 case B7200:
127 return 7200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000128#endif /* B7200 */
129#ifdef B14400
Damien Miller95def091999-11-25 00:26:21 +1100130 case B14400:
131 return 14400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000132#endif /* B14400 */
133#ifdef B28800
Damien Miller95def091999-11-25 00:26:21 +1100134 case B28800:
135 return 28800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000136#endif /* B28800 */
137#ifdef B57600
Damien Miller95def091999-11-25 00:26:21 +1100138 case B57600:
139 return 57600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000140#endif /* B57600 */
141#ifdef B76800
Damien Miller95def091999-11-25 00:26:21 +1100142 case B76800:
143 return 76800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000144#endif /* B76800 */
145#ifdef B115200
Damien Miller95def091999-11-25 00:26:21 +1100146 case B115200:
147 return 115200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000148#endif /* B115200 */
149#ifdef B230400
Damien Miller95def091999-11-25 00:26:21 +1100150 case B230400:
151 return 230400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000152#endif /* B230400 */
Damien Miller95def091999-11-25 00:26:21 +1100153 default:
154 return 9600;
155 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000156}
157
Damien Miller95def091999-11-25 00:26:21 +1100158/*
159 * Converts a numeric baud rate to a POSIX speed_t.
160 */
Damien Miller4af51302000-04-16 11:18:38 +1000161static speed_t
Damien Miller95def091999-11-25 00:26:21 +1100162baud_to_speed(int baud)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000163{
Damien Miller95def091999-11-25 00:26:21 +1100164 switch (baud) {
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000165 case 0:
Damien Miller95def091999-11-25 00:26:21 +1100166 return B0;
167 case 50:
168 return B50;
169 case 75:
170 return B75;
171 case 110:
172 return B110;
173 case 134:
174 return B134;
175 case 150:
176 return B150;
177 case 200:
178 return B200;
179 case 300:
180 return B300;
181 case 600:
182 return B600;
183 case 1200:
184 return B1200;
185 case 1800:
186 return B1800;
187 case 2400:
188 return B2400;
189 case 4800:
190 return B4800;
191 case 9600:
192 return B9600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000193
194#ifdef B19200
Damien Miller95def091999-11-25 00:26:21 +1100195 case 19200:
196 return B19200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000197#else /* B19200 */
198#ifdef EXTA
Damien Miller95def091999-11-25 00:26:21 +1100199 case 19200:
200 return EXTA;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000201#endif /* EXTA */
202#endif /* B19200 */
203
204#ifdef B38400
Damien Miller95def091999-11-25 00:26:21 +1100205 case 38400:
206 return B38400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000207#else /* B38400 */
208#ifdef EXTB
Damien Miller95def091999-11-25 00:26:21 +1100209 case 38400:
210 return EXTB;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000211#endif /* EXTB */
212#endif /* B38400 */
213
214#ifdef B7200
Damien Miller95def091999-11-25 00:26:21 +1100215 case 7200:
216 return B7200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000217#endif /* B7200 */
218#ifdef B14400
Damien Miller95def091999-11-25 00:26:21 +1100219 case 14400:
220 return B14400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000221#endif /* B14400 */
222#ifdef B28800
Damien Miller95def091999-11-25 00:26:21 +1100223 case 28800:
224 return B28800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000225#endif /* B28800 */
226#ifdef B57600
Damien Miller95def091999-11-25 00:26:21 +1100227 case 57600:
228 return B57600;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000229#endif /* B57600 */
230#ifdef B76800
Damien Miller95def091999-11-25 00:26:21 +1100231 case 76800:
232 return B76800;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000233#endif /* B76800 */
234#ifdef B115200
Damien Miller95def091999-11-25 00:26:21 +1100235 case 115200:
236 return B115200;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000237#endif /* B115200 */
238#ifdef B230400
Damien Miller95def091999-11-25 00:26:21 +1100239 case 230400:
240 return B230400;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000241#endif /* B230400 */
Damien Miller95def091999-11-25 00:26:21 +1100242 default:
243 return B9600;
244 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000245}
246
Damien Miller95def091999-11-25 00:26:21 +1100247/*
Damien Miller1d109762005-08-16 21:32:09 +1000248 * Encode a special character into SSH line format.
249 */
250static u_int
251special_char_encode(cc_t c)
252{
253#ifdef _POSIX_VDISABLE
254 if (c == _POSIX_VDISABLE)
255 return 255;
256#endif /* _POSIX_VDISABLE */
257 return c;
258}
259
260/*
261 * Decode a special character from SSH line format.
262 */
263static cc_t
264special_char_decode(u_int c)
265{
266#ifdef _POSIX_VDISABLE
267 if (c == 255)
268 return _POSIX_VDISABLE;
269#endif /* _POSIX_VDISABLE */
270 return c;
271}
272
273/*
Damien Miller95def091999-11-25 00:26:21 +1100274 * Encodes terminal modes for the terminal referenced by fd
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000275 * or tiop in a portable manner, and appends the modes to a packet
Damien Miller95def091999-11-25 00:26:21 +1100276 * being constructed.
277 */
Damien Miller4af51302000-04-16 11:18:38 +1000278void
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000279tty_make_modes(int fd, struct termios *tiop)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000280{
Damien Miller95def091999-11-25 00:26:21 +1100281 struct termios tio;
282 int baud;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000283 Buffer buf;
284 int tty_op_ospeed, tty_op_ispeed;
285 void (*put_arg)(Buffer *, u_int);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000286
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000287 buffer_init(&buf);
288 if (compat20) {
289 tty_op_ospeed = TTY_OP_OSPEED_PROTO2;
290 tty_op_ispeed = TTY_OP_ISPEED_PROTO2;
291 put_arg = buffer_put_int;
292 } else {
293 tty_op_ospeed = TTY_OP_OSPEED_PROTO1;
294 tty_op_ispeed = TTY_OP_ISPEED_PROTO1;
295 put_arg = (void (*)(Buffer *, u_int)) buffer_put_char;
Damien Miller95def091999-11-25 00:26:21 +1100296 }
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000297
298 if (tiop == NULL) {
299 if (tcgetattr(fd, &tio) == -1) {
Damien Miller996acd22003-04-09 20:59:48 +1000300 logit("tcgetattr: %.100s", strerror(errno));
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000301 goto end;
302 }
303 } else
304 tio = *tiop;
305
Damien Miller95def091999-11-25 00:26:21 +1100306 /* Store input and output baud rates. */
307 baud = speed_to_baud(cfgetospeed(&tio));
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000308 debug3("tty_make_modes: ospeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000309 buffer_put_char(&buf, tty_op_ospeed);
310 buffer_put_int(&buf, baud);
Damien Miller95def091999-11-25 00:26:21 +1100311 baud = speed_to_baud(cfgetispeed(&tio));
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000312 debug3("tty_make_modes: ispeed %d", baud);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000313 buffer_put_char(&buf, tty_op_ispeed);
314 buffer_put_int(&buf, baud);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000315
Damien Miller95def091999-11-25 00:26:21 +1100316 /* Store values of mode flags. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000317#define TTYCHAR(NAME, OP) \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000318 debug3("tty_make_modes: %d %d", OP, tio.c_cc[NAME]); \
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000319 buffer_put_char(&buf, OP); \
Damien Miller1d109762005-08-16 21:32:09 +1000320 put_arg(&buf, special_char_encode(tio.c_cc[NAME]));
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000321
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000322#define TTYMODE(NAME, FIELD, OP) \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000323 debug3("tty_make_modes: %d %d", OP, ((tio.FIELD & NAME) != 0)); \
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000324 buffer_put_char(&buf, OP); \
325 put_arg(&buf, ((tio.FIELD & NAME) != 0));
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000326
327#include "ttymodes.h"
328
329#undef TTYCHAR
330#undef TTYMODE
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000331
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000332end:
Damien Miller95def091999-11-25 00:26:21 +1100333 /* Mark end of mode data. */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000334 buffer_put_char(&buf, TTY_OP_END);
335 if (compat20)
336 packet_put_string(buffer_ptr(&buf), buffer_len(&buf));
337 else
338 packet_put_raw(buffer_ptr(&buf), buffer_len(&buf));
339 buffer_free(&buf);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000340}
341
Damien Miller95def091999-11-25 00:26:21 +1100342/*
343 * Decodes terminal modes for the terminal referenced by fd in a portable
344 * manner from a packet being read.
345 */
Damien Miller4af51302000-04-16 11:18:38 +1000346void
Damien Miller95def091999-11-25 00:26:21 +1100347tty_parse_modes(int fd, int *n_bytes_ptr)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000348{
Damien Miller95def091999-11-25 00:26:21 +1100349 struct termios tio;
350 int opcode, baud;
351 int n_bytes = 0;
352 int failure = 0;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000353 u_int (*get_arg)(void);
354 int arg, arg_size;
355
356 if (compat20) {
357 *n_bytes_ptr = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000358 debug3("tty_parse_modes: SSH2 n_bytes %d", *n_bytes_ptr);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000359 if (*n_bytes_ptr == 0)
360 return;
361 get_arg = packet_get_int;
362 arg_size = 4;
363 } else {
364 get_arg = packet_get_char;
365 arg_size = 1;
366 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000367
Damien Miller95def091999-11-25 00:26:21 +1100368 /*
369 * Get old attributes for the terminal. We will modify these
370 * flags. I am hoping that if there are any machine-specific
371 * modes, they will initially have reasonable values.
372 */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000373 if (tcgetattr(fd, &tio) == -1) {
Damien Miller996acd22003-04-09 20:59:48 +1000374 logit("tcgetattr: %.100s", strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +1100375 failure = -1;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000376 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000377
Damien Miller95def091999-11-25 00:26:21 +1100378 for (;;) {
379 n_bytes += 1;
380 opcode = packet_get_char();
381 switch (opcode) {
382 case TTY_OP_END:
383 goto set;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000384
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000385 /* XXX: future conflict possible */
386 case TTY_OP_ISPEED_PROTO1:
387 case TTY_OP_ISPEED_PROTO2:
Damien Miller95def091999-11-25 00:26:21 +1100388 n_bytes += 4;
389 baud = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000390 debug3("tty_parse_modes: ispeed %d", baud);
Damien Millera5a28592006-03-26 14:10:34 +1100391 if (failure != -1 &&
392 cfsetispeed(&tio, baud_to_speed(baud)) == -1)
Damien Miller95def091999-11-25 00:26:21 +1100393 error("cfsetispeed failed for %d", baud);
394 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000395
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000396 /* XXX: future conflict possible */
397 case TTY_OP_OSPEED_PROTO1:
398 case TTY_OP_OSPEED_PROTO2:
Damien Miller95def091999-11-25 00:26:21 +1100399 n_bytes += 4;
400 baud = packet_get_int();
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000401 debug3("tty_parse_modes: ospeed %d", baud);
Damien Millera5a28592006-03-26 14:10:34 +1100402 if (failure != -1 &&
403 cfsetospeed(&tio, baud_to_speed(baud)) == -1)
Damien Miller95def091999-11-25 00:26:21 +1100404 error("cfsetospeed failed for %d", baud);
405 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000406
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000407#define TTYCHAR(NAME, OP) \
408 case OP: \
409 n_bytes += arg_size; \
Damien Miller1d109762005-08-16 21:32:09 +1000410 tio.c_cc[NAME] = special_char_decode(get_arg()); \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000411 debug3("tty_parse_modes: %d %d", OP, tio.c_cc[NAME]); \
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000412 break;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000413#define TTYMODE(NAME, FIELD, OP) \
414 case OP: \
415 n_bytes += arg_size; \
416 if ((arg = get_arg())) \
417 tio.FIELD |= NAME; \
418 else \
419 tio.FIELD &= ~NAME; \
Ben Lindstrom491bbb82001-06-25 05:24:16 +0000420 debug3("tty_parse_modes: %d %d", OP, arg); \
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000421 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000422
423#include "ttymodes.h"
424
425#undef TTYCHAR
426#undef TTYMODE
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000427
Damien Miller95def091999-11-25 00:26:21 +1100428 default:
429 debug("Ignoring unsupported tty mode opcode %d (0x%x)",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100430 opcode, opcode);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000431 if (!compat20) {
432 /*
433 * SSH1:
434 * Opcodes 1 to 127 are defined to have
435 * a one-byte argument.
Ben Lindstrom6328ab32002-03-22 02:54:23 +0000436 * Opcodes 128 to 159 are defined to have
437 * an integer argument.
438 */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000439 if (opcode > 0 && opcode < 128) {
440 n_bytes += 1;
441 (void) packet_get_char();
442 break;
443 } else if (opcode >= 128 && opcode < 160) {
Ben Lindstrom6328ab32002-03-22 02:54:23 +0000444 n_bytes += 4;
445 (void) packet_get_int();
446 break;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000447 } else {
448 /*
449 * It is a truly undefined opcode (160 to 255).
450 * We have no idea about its arguments. So we
Damien Millera5a28592006-03-26 14:10:34 +1100451 * must stop parsing. Note that some data
452 * may be left in the packet; hopefully there
453 * is nothing more coming after the mode data.
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000454 */
Damien Millera5a28592006-03-26 14:10:34 +1100455 logit("parse_tty_modes: unknown opcode %d",
456 opcode);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000457 goto set;
Ben Lindstrom6328ab32002-03-22 02:54:23 +0000458 }
Damien Miller95def091999-11-25 00:26:21 +1100459 } else {
460 /*
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000461 * SSH2:
Ben Lindstromac2f0032001-04-15 14:25:12 +0000462 * Opcodes 1 to 159 are defined to have
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000463 * a uint32 argument.
464 * Opcodes 160 to 255 are undefined and
465 * cause parsing to stop.
Damien Miller95def091999-11-25 00:26:21 +1100466 */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000467 if (opcode > 0 && opcode < 160) {
Damien Miller95def091999-11-25 00:26:21 +1100468 n_bytes += 4;
469 (void) packet_get_int();
470 break;
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000471 } else {
Damien Millera5a28592006-03-26 14:10:34 +1100472 logit("parse_tty_modes: unknown opcode %d",
473 opcode);
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000474 goto set;
Damien Miller95def091999-11-25 00:26:21 +1100475 }
Ben Lindstrom6328ab32002-03-22 02:54:23 +0000476 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000477 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000478 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000479
Damien Miller95def091999-11-25 00:26:21 +1100480set:
481 if (*n_bytes_ptr != n_bytes) {
482 *n_bytes_ptr = n_bytes;
Damien Miller996acd22003-04-09 20:59:48 +1000483 logit("parse_tty_modes: n_bytes_ptr != n_bytes: %d %d",
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000484 *n_bytes_ptr, n_bytes);
Damien Miller95def091999-11-25 00:26:21 +1100485 return; /* Don't process bytes passed */
486 }
487 if (failure == -1)
Ben Lindstromac2f0032001-04-15 14:25:12 +0000488 return; /* Packet parsed ok but tcgetattr() failed */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000489
Damien Miller95def091999-11-25 00:26:21 +1100490 /* Set the new modes for the terminal. */
Ben Lindstromae8e2d32001-04-14 23:13:02 +0000491 if (tcsetattr(fd, TCSANOW, &tio) == -1)
Damien Miller996acd22003-04-09 20:59:48 +1000492 logit("Setting tty modes failed: %.100s", strerror(errno));
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000493}