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/* -*- mode: c++; c-basic-offset:4 -*-
uiserver/echocommand.cpp
This file is part of Kleopatra, the KDE keymanager
Copyright (c) 2007 Klarälvdalens Datakonsult AB
Kleopatra 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.
Kleopatra 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
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the Qt library by Trolltech AS, Norway (or with modified versions
of Qt that use the same license as Qt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
Qt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#include <config-kleopatra.h>
#include "echocommand.h"
#include <utils/input.h>
#include <utils/output.h>
#include <utils/exception.h>
#include <gpg-error.h>
#include <KLocale>
#include <QVariant>
#include <QByteArray>
#include <QIODevice>
#include <QList>
#include <string>
#include <algorithm>
using namespace Kleo;
using namespace boost;
static const char option_prefix[] = "prefix";
class EchoCommand::Private {
public:
Private() : operationsInFlight( 0 ), buffer() {}
int operationsInFlight;
QByteArray buffer;
};
EchoCommand::EchoCommand()
: QObject(), AssuanCommandMixin<EchoCommand>(), d( new Private ) {}
EchoCommand::~EchoCommand() {}
int EchoCommand::doStart() {
const std::vector< shared_ptr<Input> > in = inputs(), msg = messages();
const std::vector< shared_ptr<Output> > out = outputs();
if ( !in.empty() && out.empty() )
return makeError( GPG_ERR_NOT_SUPPORTED );
if ( !msg.empty() )
return makeError( GPG_ERR_NOT_SUPPORTED );
if ( hasOption( option_prefix ) && !option( option_prefix ).toByteArray().isEmpty() )
return makeError( GPG_ERR_NOT_IMPLEMENTED );
std::string keyword;
if ( hasOption( "inquire" ) ) {
keyword = option("inquire").toString().toStdString();
if ( keyword.empty() )
return makeError( GPG_ERR_INV_ARG );
}
const std::string output = option("text").toString().toStdString();
// aaand ACTION:
// 1. echo the command line though the status channel
sendStatus( "ECHO", output.empty() ? "" : output.c_str() );
// 2. if --inquire was given, inquire more data from the client:
if ( !keyword.empty() )
if ( const int err = inquire( keyword.c_str(), this,
SLOT(slotInquireData(int,QByteArray)) ) )
return err;
else
++d->operationsInFlight;
// 3. if INPUT was given, start the data pump for input->output
if ( const shared_ptr<QIODevice> i = in.at(0)->ioDevice() ) {
const shared_ptr<QIODevice> o = out.at(0)->ioDevice();
++d->operationsInFlight;
connect( i.get(), SIGNAL(readyRead()), this, SLOT(slotInputReadyRead()) );
connect( o.get(), SIGNAL(bytesWritten(qint64)), this, SLOT(slotOutputBytesWritten()) );
if ( i->bytesAvailable() )
slotInputReadyRead();
}
if ( !d->operationsInFlight )
done();
return 0;
}
void EchoCommand::doCanceled() {
}
void EchoCommand::slotInquireData( int rc, const QByteArray & data ) {
--d->operationsInFlight;
if ( rc ) {
done( rc );
return;
}
try {
sendStatus( "ECHOINQ", data );
if ( !d->operationsInFlight )
done();
} catch ( const Exception & e ) {
done( e.error(), e.message() );
} catch ( const std::exception & e ) {
done( makeError( GPG_ERR_UNEXPECTED ),
i18n("Caught unexpected exception in SignCommand::Private::slotMicAlgDetermined: %1",
QString::fromLocal8Bit( e.what() ) ) );
} catch ( ... ) {
done( makeError( GPG_ERR_UNEXPECTED ),
i18n("Caught unknown exception in SignCommand::Private::slotMicAlgDetermined") );
}
}
void EchoCommand::slotInputReadyRead() {
const shared_ptr<QIODevice> in = inputs().at(0)->ioDevice();
assert( in );
QByteArray buffer;
buffer.resize( in->bytesAvailable() );
const qint64 read = in->read( buffer.data(), buffer.size() );
if ( read == - 1 ) {
done( makeError( GPG_ERR_EIO ) );
return;
}
if ( read == 0 || !in->isSequential() && read == in->size() )
in->close();
buffer.resize( read );
d->buffer += buffer;
slotOutputBytesWritten();
}
void EchoCommand::slotOutputBytesWritten() {
const shared_ptr<QIODevice> out = outputs().at(0)->ioDevice();
assert( out );
if ( !d->buffer.isEmpty() ) {
if ( out->bytesToWrite() )
return;
const qint64 written = out->write( d->buffer );
if ( written == -1 ) {
done( makeError( GPG_ERR_EIO ) );
return;
}
d->buffer.remove( 0, written );
}
if ( out->isOpen() && d->buffer.isEmpty() && !inputs().at(0)->ioDevice()->isOpen() ) {
out->close();
if ( !--d->operationsInFlight )
done();
}
}
#include "moc_echocommand.cpp"

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