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/* $OpenBSD: sshtty.c,v 1.14 2010/01/09 05:04:24 djm Exp $ */ |
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/* |
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* Author: Tatu Ylonen <ylo@cs.hut.fi> |
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
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* All rights reserved |
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* |
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* As far as I am concerned, the code I have written for this software |
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* can be used freely for any purpose. Any derived versions of this |
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* software must be clearly marked as such, and if the derived work is |
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* incompatible with the protocol description in the RFC file, it must be |
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* called by a name other than "ssh" or "Secure Shell". |
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*/ |
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/* |
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* Copyright (c) 2001 Markus Friedl. All rights reserved. |
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* Copyright (c) 2001 Kevin Steves. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <stdio.h> |
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#include <termios.h> |
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#include <pwd.h> |
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#include "sshpty.h" |
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static struct termios _saved_tio; |
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static int _in_raw_mode = 0; |
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struct termios * |
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get_saved_tio(void) |
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{ |
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return _in_raw_mode ? &_saved_tio : NULL; |
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} |
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void |
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leave_raw_mode(int quiet) |
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{ |
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if (!_in_raw_mode) |
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return; |
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if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1) { |
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if (!quiet) |
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perror("tcsetattr"); |
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} else |
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_in_raw_mode = 0; |
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} |
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void |
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enter_raw_mode(int quiet) |
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{ |
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struct termios tio; |
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if (tcgetattr(fileno(stdin), &tio) == -1) { |
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if (!quiet) |
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perror("tcgetattr"); |
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return; |
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} |
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_saved_tio = tio; |
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tio.c_iflag |= IGNPAR; |
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tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF); |
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#ifdef IUCLC |
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tio.c_iflag &= ~IUCLC; |
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#endif |
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tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL); |
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#ifdef IEXTEN |
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tio.c_lflag &= ~IEXTEN; |
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#endif |
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tio.c_oflag &= ~OPOST; |
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tio.c_cc[VMIN] = 1; |
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tio.c_cc[VTIME] = 0; |
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if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1) { |
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if (!quiet) |
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perror("tcsetattr"); |
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} else |
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_in_raw_mode = 1; |
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} |