QgsGrassShell::QgsGrassShell( QgsGrassTools *tools, QTabWidget *parent, const char *name )
: QFrame( parent ), mTools( tools ), mTabWidget( parent )
{
Q_UNUSED( name );
QVBoxLayout *mainLayout = new QVBoxLayout( this );
QTermWidget *mTerminal = new QTermWidget( 0, this );
initTerminal( mTerminal );
QShortcut *pasteShortcut = new QShortcut( QKeySequence( tr( "Ctrl+Shift+V" ) ), mTerminal );
QShortcut *copyShortcut = new QShortcut( QKeySequence( tr( "Ctrl+Shift+C" ) ), mTerminal );
mainLayout->addWidget( mTerminal );
setLayout( mainLayout );
connect( mTerminal, SIGNAL( finished() ), this, SLOT( closeShell() ) );
connect( pasteShortcut, SIGNAL( activated() ), mTerminal, SLOT( pasteClipboard() ) );
connect( copyShortcut, SIGNAL( activated() ), mTerminal, SLOT( copyClipboard() ) );
// TODO: find a better way to manage the lockfile.
// Locking should not be done here, a mapset is either locked by GRASS if QGIS is started from GRASS or it is created by QgsGrass::openMapset
/*
mLockFilename = QgsGrass::lockFilePath();
QFile::remove( mLockFilename + ".qgis" );
if ( !QFile::rename( mLockFilename, mLockFilename + ".qgis" ) )
{
QMessageBox::warning( this, tr( "Warning" ), tr( "Cannot rename the lock file %1" ).arg( mLockFilename ) );
}
*/
mTerminal->setSize( 80, 25 );
mTerminal->setColorScheme( COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW );
mTerminal->startShellProgram();
mTerminal->setFocus( Qt::MouseFocusReason );
}
SSH::~SSH()
{
if (_bShellOpen)
{
closeShell();
}
if (_bChanOpen)
{
closeChannel();
}
_logger->debug("Destructing SSH instance");
if (_connected) ssh_disconnect(_ssh);
if (_ssh != NULL) {
_logger->trace("Freeing SSH object");
ssh_free(_ssh);
}
_logger->debug("SSH instance destructed");
}
QgsGrassShell::QgsGrassShell( QgsGrassTools *tools,
QTabWidget * parent, const char * name ):
QDialog( parent ), QgsGrassShellBase(), mTools( tools )
{
mValid = false;
mSkipLines = 2;
mTabWidget = parent;
#ifdef WIN32
QMessageBox::warning( 0, "Warning",
"GRASS Shell is not supported on Windows." );
return;
#else
setupUi( this );
QGridLayout *layout = new QGridLayout( mTextFrame, 1, 1 );
mText = new QgsGrassShellText( this, mTextFrame );
layout->addWidget( mText, 0, 0 );
mText->show();
connect( mCloseButton, SIGNAL( clicked() ), this, SLOT( closeShell() ) );
mFont = QFont( "Courier", 10 );
mAppDir = mTools->appDir();
#ifndef Q_WS_MAC
// Qt4.3.2/Mac Q3TextEdit readOnly property causes keys to be processed as keyboard actions
mText->setReadOnly( TRUE );
#endif
//mText->setFocusPolicy ( QWidget::NoFocus ); // To get key press directly
#ifndef HAVE_OPENPTY
mText->append( "GRASS shell is not supported" );
return;
#endif
// TODO set cursor IbeamCursor
// This does not work - the cursor is used for scrollbars -> disabled
//mText->setCursor ( QCursor(Qt::IbeamCursor) );
mParagraph = -1; // first will be 0
mIndex = -1;
mNewLine = true;
for ( int i = 0; i < ModeCount; i++ )
{
resetMode( i );
}
int uid;
seteuid( uid = getuid() ); /* Run unprivileged */
// Get and open pseudo terminal
// Note: 0 (stdin), 1 (stdout) or 2 (stderr)
int fdSlave; // slave file descriptor
seteuid( 0 );
int ret = openpty( &mFdMaster, &fdSlave, NULL, NULL, NULL );
if ( ret != 0 )
{
QMessageBox::warning( 0, "Warning", "Cannot open pseudo terminal" );
return;
}
fchown( fdSlave, uid, ( gid_t ) - 1 );
fchmod( fdSlave, S_IRUSR | S_IWUSR );
seteuid( uid );
QgsDebugMsg( QString( "mFdMaster = %1" ).arg( mFdMaster ) );
QgsDebugMsg( QString( "fdSlave = %1" ).arg( fdSlave ) );
fcntl( mFdMaster, F_SETFL, O_NDELAY );
//fcntl( fdSlave, F_SETFL, O_NDELAY); // enable?
QString slaveName = ttyname( fdSlave );
QgsDebugMsg( QString( "master ttyname = %1" ).arg( ttyname( mFdMaster ) ) );
QgsDebugMsg( QString( "slave ttyname = %1" ).arg( ttyname( fdSlave ) ) );
//::close( fdSlave ); // -> crash
// Fork slave and open shell
int pid = fork();
QgsDebugMsg( QString( "pid = %1" ).arg( pid ) );
if ( pid == -1 )
{
QMessageBox::warning( 0, "Warning", "Cannot fork shell" );
return;
}
// Child - slave
if ( pid == 0 )
{
QgsDebugMsg( "child ->" );
// TODO close all opened file descriptors - close(0)???
::close( mFdMaster );
//::close( fdSlave ); // -> freeze
setsid();
seteuid( 0 );
int fd = ::open(( char* ) slaveName.ascii(), O_RDWR );
if ( fd < 0 )
{
QMessageBox::warning( 0, "Warning", "Cannot open slave file "
"in child process" );
return;
}
fchown( fd, uid, ( gid_t ) - 1 );
fchmod( fd, S_IRUSR | S_IWUSR );
setuid( uid );
dup2( fd, 0 ); /* stdin */
dup2( fd, 1 ); /* stdout */
dup2( fd, 2 ); /* stderr */
// TODO: test if shell is available
QString shell = ( getenv( "SHELL" ) );
if ( shell.isEmpty() )
{
shell = "/bin/bash";
}
const char *norc = "";
QFileInfo si( shell );
if ( si.fileName() == "bash" || si.fileName() == "sh" )
{
norc = "--norc";
}
else if ( si.fileName() == "tcsh" || si.fileName() == "csh" )
{
norc = "-f";
}
// Warning: execle + --norc will not inherit not given variables
// -> overwrite here
const char *env = "GRASS_MESSAGE_FORMAT=gui";
char *envstr = new char[strlen( env )+1];
strcpy( envstr, env );
putenv( envstr );
putenv(( char * ) "GISRC_MODE_MEMORY" ); // unset
env = "PS1=GRASS > ";
envstr = new char[strlen( env )+1];
strcpy( envstr, env );
putenv( envstr );
env = "TERM=vt100";
envstr = new char[strlen( env )+1];
strcpy( envstr, env );
putenv( envstr );
//char *envar[] = { "PS1=GRASS > ", "TERM=vt100", "GISRC_MODE_MEMORY=",
// "GRASS_MESSAGE_FORMAT=gui", (char *)0 };
//execle ( (char*)shell.ascii(), (char *)si.fileName().ascii(),
// norc, (char *) 0, envar);
execl(( char* )shell.ascii(), ( char * )si.fileName().ascii(),
norc, ( char * ) 0 );
// Failed (QMessageBox here does not work)
fprintf( stderr, "GRASS_INFO_ERROR(1,1): Cannot start shell %s\n",
( char* )shell.ascii() );
exit( 1 );
}
mPid = pid;
// Create socket notifier
mOutNotifier = new QSocketNotifier( mFdMaster, QSocketNotifier::Read, this );
QObject::connect( mOutNotifier, SIGNAL( activated( int ) ),
this, SLOT( readStdout( int ) ) );
// Set tab stops ???
mTabStop.resize( 200 );
for ( int i = 0 ; i * 8 < ( int )mTabStop.size(); i++ )
{
mTabStop[i*8] = true;
}
// Set trap to write history on SIGUSR1
//QString trap = "trap 'history -w' SIGUSR1\015\012";
QString trap = "trap 'history -w' SIGUSR1\015";
write( mFdMaster, trap.ascii(), trap.length() );
mText->clear();
resizeTerminal();
mValid = true;
#endif // !WIN32
}
