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qtermwidget-packaging/lib/Pty.cpp

317 lines
7.2 KiB

/*
* This file is a part of QTerminal - http://gitorious.org/qterminal
*
* This file was un-linked from KDE and modified
* by Maxim Bourmistrov <maxim@unixconn.com>
*
*/
/*
This file is part of Konsole, an X terminal.
Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Own
#include "Pty.h"
// System
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <termios.h>
#include <signal.h>
// Qt
#include <QStringList>
#include <QtDebug>
#include "kpty.h"
#include "kptydevice.h"
using namespace Konsole;
void Pty::setWindowSize(int lines, int cols)
{
_windowColumns = cols;
_windowLines = lines;
if (pty()->masterFd() >= 0)
pty()->setWinSize(lines, cols);
}
QSize Pty::windowSize() const
{
return QSize(_windowColumns,_windowLines);
}
void Pty::setFlowControlEnabled(bool enable)
{
_xonXoff = enable;
if (pty()->masterFd() >= 0)
{
struct ::termios ttmode;
pty()->tcGetAttr(&ttmode);
if (!enable)
ttmode.c_iflag &= ~(IXOFF | IXON);
else
ttmode.c_iflag |= (IXOFF | IXON);
if (!pty()->tcSetAttr(&ttmode))
qWarning() << "Unable to set terminal attributes.";
}
}
bool Pty::flowControlEnabled() const
{
if (pty()->masterFd() >= 0)
{
struct ::termios ttmode;
pty()->tcGetAttr(&ttmode);
return ttmode.c_iflag & IXOFF &&
ttmode.c_iflag & IXON;
}
qWarning() << "Unable to get flow control status, terminal not connected.";
return false;
}
void Pty::setUtf8Mode(bool enable)
{
#ifdef IUTF8 // XXX not a reasonable place to check it.
_utf8 = enable;
if (pty()->masterFd() >= 0)
{
struct ::termios ttmode;
pty()->tcGetAttr(&ttmode);
if (!enable)
ttmode.c_iflag &= ~IUTF8;
else
ttmode.c_iflag |= IUTF8;
if (!pty()->tcSetAttr(&ttmode))
qWarning() << "Unable to set terminal attributes.";
}
#endif
}
void Pty::setErase(char erase)
{
_eraseChar = erase;
if (pty()->masterFd() >= 0)
{
struct ::termios ttmode;
pty()->tcGetAttr(&ttmode);
ttmode.c_cc[VERASE] = erase;
if (!pty()->tcSetAttr(&ttmode))
qWarning() << "Unable to set terminal attributes.";
}
}
char Pty::erase() const
{
if (pty()->masterFd() >= 0)
{
struct ::termios ttyAttributes;
pty()->tcGetAttr(&ttyAttributes);
return ttyAttributes.c_cc[VERASE];
}
return _eraseChar;
}
void Pty::addEnvironmentVariables(const QStringList& environment)
{
QListIterator<QString> iter(environment);
while (iter.hasNext())
{
QString pair = iter.next();
// split on the first '=' character
int pos = pair.indexOf('=');
if ( pos >= 0 )
{
QString variable = pair.left(pos);
QString value = pair.mid(pos+1);
setEnv(variable,value);
}
}
}
int Pty::start(const QString& program,
const QStringList& programArguments,
const QStringList& environment,
ulong winid,
bool addToUtmp
//const QString& dbusService,
//const QString& dbusSession
)
{
clearProgram();
// For historical reasons, the first argument in programArguments is the
// name of the program to execute, so create a list consisting of all
// but the first argument to pass to setProgram()
Q_ASSERT(programArguments.count() >= 1);
setProgram(program.toLatin1(),programArguments.mid(1));
addEnvironmentVariables(environment);
setEnv("WINDOWID", QString::number(winid));
// unless the LANGUAGE environment variable has been set explicitly
// set it to a null string
// this fixes the problem where KCatalog sets the LANGUAGE environment
// variable during the application's startup to something which
// differs from LANG,LC_* etc. and causes programs run from
// the terminal to display messages in the wrong language
//
// this can happen if LANG contains a language which KDE
// does not have a translation for
//
// BR:149300
setEnv("LANGUAGE",QString(),false /* do not overwrite existing value if any */);
setUseUtmp(addToUtmp);
struct ::termios ttmode;
pty()->tcGetAttr(&ttmode);
if (!_xonXoff)
ttmode.c_iflag &= ~(IXOFF | IXON);
else
ttmode.c_iflag |= (IXOFF | IXON);
#ifdef IUTF8 // XXX not a reasonable place to check it.
if (!_utf8)
ttmode.c_iflag &= ~IUTF8;
else
ttmode.c_iflag |= IUTF8;
#endif
if (_eraseChar != 0)
ttmode.c_cc[VERASE] = _eraseChar;
if (!pty()->tcSetAttr(&ttmode))
qWarning() << "Unable to set terminal attributes.";
pty()->setWinSize(_windowLines, _windowColumns);
KProcess::start();
if (!waitForStarted())
return -1;
return 0;
}
void Pty::setWriteable(bool writeable)
{
struct stat sbuf;
stat(pty()->ttyName(), &sbuf);
if (writeable)
chmod(pty()->ttyName(), sbuf.st_mode | S_IWGRP);
else
chmod(pty()->ttyName(), sbuf.st_mode & ~(S_IWGRP|S_IWOTH));
}
Pty::Pty(int masterFd, QObject* parent)
: KPtyProcess(masterFd,parent)
{
init();
}
Pty::Pty(QObject* parent)
: KPtyProcess(parent)
{
init();
}
void Pty::init()
{
_windowColumns = 0;
_windowLines = 0;
_eraseChar = 0;
_xonXoff = true;
_utf8 =true;
connect(pty(), SIGNAL(readyRead()) , this , SLOT(dataReceived()));
setPtyChannels(KPtyProcess::AllChannels);
}
Pty::~Pty()
{
}
void Pty::sendData(const char* data, int length)
{
if (!length)
return;
if (!pty()->write(data,length))
{
qWarning() << "Pty::doSendJobs - Could not send input data to terminal process.";
return;
}
}
void Pty::dataReceived()
{
QByteArray data = pty()->readAll();
emit receivedData(data.constData(),data.count());
}
void Pty::lockPty(bool lock)
{
Q_UNUSED(lock);
// TODO: Support for locking the Pty
//if (lock)
//suspend();
//else
//resume();
}
int Pty::foregroundProcessGroup() const
{
int pid = tcgetpgrp(pty()->masterFd());
if ( pid != -1 )
{
return pid;
}
return 0;
}
void Pty::setupChildProcess()
{
KPtyProcess::setupChildProcess();
// reset all signal handlers
// this ensures that terminal applications respond to
// signals generated via key sequences such as Ctrl+C
// (which sends SIGINT)
struct sigaction action;
sigset_t sigset;
sigemptyset(&action.sa_mask);
action.sa_handler = SIG_DFL;
action.sa_flags = 0;
for (int signal=1;signal < NSIG; signal++) {
sigaction(signal,&action,0L);
sigaddset(&sigset, signal);
}
sigprocmask(SIG_UNBLOCK, &sigset, NULL);
}