mirror of https://gitee.com/openkylin/openssh.git
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
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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 "includes.h"
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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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}
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