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82bb6f20 | 1 | /* $OpenBSD: sshtty.c,v 1.13 2008/05/19 15:45:07 djm Exp $ */ |
7b628035 | 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 "includes.h" | |
1d3e026f | 39 | |
31652869 | 40 | #include <sys/types.h> |
cf851879 | 41 | #include <stdio.h> |
1d3e026f | 42 | #include <termios.h> |
31652869 | 43 | #include <pwd.h> |
7b628035 | 44 | |
07d80252 | 45 | #include "sshpty.h" |
7b628035 | 46 | |
47 | static struct termios _saved_tio; | |
48 | static int _in_raw_mode = 0; | |
49 | ||
82bb6f20 | 50 | struct termios * |
7b628035 | 51 | get_saved_tio(void) |
52 | { | |
82bb6f20 | 53 | return _in_raw_mode ? &_saved_tio : NULL; |
7b628035 | 54 | } |
55 | ||
56 | void | |
57 | leave_raw_mode(void) | |
58 | { | |
59 | if (!_in_raw_mode) | |
60 | return; | |
61 | if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1) | |
62 | perror("tcsetattr"); | |
63 | else | |
64 | _in_raw_mode = 0; | |
7b628035 | 65 | } |
66 | ||
67 | void | |
68 | enter_raw_mode(void) | |
69 | { | |
70 | struct termios tio; | |
71 | ||
72 | if (tcgetattr(fileno(stdin), &tio) == -1) { | |
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); | |
145d23ca | 79 | #ifdef IUCLC |
80 | tio.c_iflag &= ~IUCLC; | |
81 | #endif | |
7b628035 | 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 | perror("tcsetattr"); | |
91 | else | |
92 | _in_raw_mode = 1; | |
7b628035 | 93 | } |