1 |
|
|
/* $OpenBSD: sshtty.c,v 1.14 2010/01/09 05:04:24 djm Exp $ */ |
2 |
|
|
/* |
3 |
|
|
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
4 |
|
|
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
5 |
|
|
* All rights reserved |
6 |
|
|
* |
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". |
12 |
|
|
*/ |
13 |
|
|
/* |
14 |
|
|
* Copyright (c) 2001 Markus Friedl. All rights reserved. |
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 |
|
|
#include <sys/types.h> |
39 |
|
|
#include <stdio.h> |
40 |
|
|
#include <termios.h> |
41 |
|
|
#include <pwd.h> |
42 |
|
|
|
43 |
|
|
#include "sshpty.h" |
44 |
|
|
|
45 |
|
|
static struct termios _saved_tio; |
46 |
|
|
static int _in_raw_mode = 0; |
47 |
|
|
|
48 |
|
|
struct termios * |
49 |
|
|
get_saved_tio(void) |
50 |
|
|
{ |
51 |
|
|
return _in_raw_mode ? &_saved_tio : NULL; |
52 |
|
|
} |
53 |
|
|
|
54 |
|
|
void |
55 |
|
|
leave_raw_mode(int quiet) |
56 |
|
|
{ |
57 |
✗✓ |
2 |
if (!_in_raw_mode) |
58 |
|
|
return; |
59 |
|
|
if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1) { |
60 |
|
|
if (!quiet) |
61 |
|
|
perror("tcsetattr"); |
62 |
|
|
} else |
63 |
|
|
_in_raw_mode = 0; |
64 |
|
1 |
} |
65 |
|
|
|
66 |
|
|
void |
67 |
|
|
enter_raw_mode(int quiet) |
68 |
|
|
{ |
69 |
|
|
struct termios tio; |
70 |
|
|
|
71 |
|
|
if (tcgetattr(fileno(stdin), &tio) == -1) { |
72 |
|
|
if (!quiet) |
73 |
|
|
perror("tcgetattr"); |
74 |
|
|
return; |
75 |
|
|
} |
76 |
|
|
_saved_tio = tio; |
77 |
|
|
tio.c_iflag |= IGNPAR; |
78 |
|
|
tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF); |
79 |
|
|
#ifdef IUCLC |
80 |
|
|
tio.c_iflag &= ~IUCLC; |
81 |
|
|
#endif |
82 |
|
|
tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL); |
83 |
|
|
#ifdef IEXTEN |
84 |
|
|
tio.c_lflag &= ~IEXTEN; |
85 |
|
|
#endif |
86 |
|
|
tio.c_oflag &= ~OPOST; |
87 |
|
|
tio.c_cc[VMIN] = 1; |
88 |
|
|
tio.c_cc[VTIME] = 0; |
89 |
|
|
if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1) { |
90 |
|
|
if (!quiet) |
91 |
|
|
perror("tcsetattr"); |
92 |
|
|
} else |
93 |
|
|
_in_raw_mode = 1; |
94 |
|
|
} |