Annotation of src/usr.bin/ssh/sshtty.c, Revision 1.1.6.1
1.1 stevesk 1: /*
2: * Author: Tatu Ylonen <ylo@cs.hut.fi>
3: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4: * All rights reserved
5: *
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".
11: */
12: /*
13: * Copyright (c) 2001 Markus Friedl. All rights reserved.
14: * Copyright (c) 2001 Kevin Steves. All rights reserved.
15: *
16: * Redistribution and use in source and binary forms, with or without
17: * modification, are permitted provided that the following conditions
18: * are met:
19: * 1. Redistributions of source code must retain the above copyright
20: * notice, this list of conditions and the following disclaimer.
21: * 2. Redistributions in binary form must reproduce the above copyright
22: * notice, this list of conditions and the following disclaimer in the
23: * documentation and/or other materials provided with the distribution.
24: *
25: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35: */
36:
37: #include "includes.h"
1.1.6.1 ! jason 38: RCSID("$OpenBSD: sshtty.c,v 1.3 2002/03/04 17:27:39 stevesk Exp $");
1.1 stevesk 39:
40: #include "sshtty.h"
41: #include "log.h"
42:
43: static struct termios _saved_tio;
44: static int _in_raw_mode = 0;
45:
46: int
47: in_raw_mode(void)
48: {
1.1.6.1 ! jason 49: return _in_raw_mode;
1.1 stevesk 50: }
51:
52: struct termios
53: get_saved_tio(void)
54: {
55: return _saved_tio;
56: }
57:
58: void
59: leave_raw_mode(void)
60: {
61: if (!_in_raw_mode)
62: return;
63: if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1)
64: perror("tcsetattr");
65: else
66: _in_raw_mode = 0;
67:
68: fatal_remove_cleanup((void (*) (void *)) leave_raw_mode, NULL);
69: }
70:
71: void
72: enter_raw_mode(void)
73: {
74: struct termios tio;
75:
76: if (tcgetattr(fileno(stdin), &tio) == -1) {
77: perror("tcgetattr");
78: return;
79: }
80: _saved_tio = tio;
81: tio.c_iflag |= IGNPAR;
82: tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF);
83: tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL);
84: #ifdef IEXTEN
85: tio.c_lflag &= ~IEXTEN;
86: #endif
87: tio.c_oflag &= ~OPOST;
88: tio.c_cc[VMIN] = 1;
89: tio.c_cc[VTIME] = 0;
90: if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1)
91: perror("tcsetattr");
92: else
93: _in_raw_mode = 1;
94:
95: fatal_add_cleanup((void (*) (void *)) leave_raw_mode, NULL);
96: }