86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
/*
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* Copyright (C) 2002-2004,2007-2011,2013,2014-2017,2019,2020 by Jonathan Naylor G4KLX
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* Copyright (C) 1999-2001 by Thomas Sailor HB9JNX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(_WIN32) && !defined(_WIN64)
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#include "PseudoTTYController.h"
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#include "Log.h"
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#include <cstring>
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#include <cassert>
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#include <cstdlib>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <cerrno>
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#include <fcntl.h>
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#include <unistd.h>
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#include <termios.h>
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#include <pty.h>
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CPseudoTTYController::CPseudoTTYController(const std::string& symlink, unsigned int speed, bool assertRTS) :
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CSerialController(speed, assertRTS),
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m_symlink(symlink)
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{
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}
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CPseudoTTYController::~CPseudoTTYController()
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{
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}
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bool CPseudoTTYController::open()
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{
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assert(m_fd == -1);
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int slavefd;
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char slave[300];
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int result = ::openpty(&m_fd, &slavefd, slave, NULL, NULL);
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if (result < 0) {
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LogError("Cannot open the pseudo tty - errno : %d", errno);
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return false;
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}
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// Remove any previous stale symlink
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::unlink(m_symlink.c_str());
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int ret = ::symlink(slave, m_symlink.c_str());
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if (ret != 0) {
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LogError("Cannot make symlink to %s with %s", slave, m_symlink.c_str());
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close();
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return false;
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}
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LogMessage("Made symbolic link from %s to %s", slave, m_symlink.c_str());
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m_device = std::string(::ttyname(m_fd));
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return setRaw();
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}
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void CPseudoTTYController::close()
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{
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CSerialController::close();
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::unlink(m_symlink.c_str());
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}
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#endif
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