Annotation of src/usr.bin/ssh/sshtty.c, Revision 1.7
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"
1.7 ! stevesk 38: RCSID("$OpenBSD: sshtty.c,v 1.6 2004/05/08 00:01:37 deraadt Exp $");
! 39:
! 40: #include <termios.h>
1.1 stevesk 41:
1.6 deraadt 42: #include "sshpty.h"
1.1 stevesk 43: #include "log.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 _saved_tio;
52: }
53:
54: void
55: leave_raw_mode(void)
56: {
57: if (!_in_raw_mode)
58: return;
59: if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1)
60: perror("tcsetattr");
61: else
62: _in_raw_mode = 0;
63: }
64:
65: void
66: enter_raw_mode(void)
67: {
68: struct termios tio;
69:
70: if (tcgetattr(fileno(stdin), &tio) == -1) {
71: perror("tcgetattr");
72: return;
73: }
74: _saved_tio = tio;
75: tio.c_iflag |= IGNPAR;
76: tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF);
1.4 markus 77: #ifdef IUCLC
78: tio.c_iflag &= ~IUCLC;
79: #endif
1.1 stevesk 80: tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL);
81: #ifdef IEXTEN
82: tio.c_lflag &= ~IEXTEN;
83: #endif
84: tio.c_oflag &= ~OPOST;
85: tio.c_cc[VMIN] = 1;
86: tio.c_cc[VTIME] = 0;
87: if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1)
88: perror("tcsetattr");
89: else
90: _in_raw_mode = 1;
91: }