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pinentrydialog.cpp
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/*
pinentrydialog.cpp - A (not yet) secure Qt 4 dialog for PIN entry.
Copyright (C) 2002, 2008 Klar舁vdalens Datakonsult AB (KDAB)
Copyright 2007 Ingo Klﾃｶcker
Written by Steffen Hansen <steffen@klaralvdalens-datakonsult.se>.
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.
*/
#include "pinentrydialog.h"
#include <QGridLayout>
#include "qsecurelineedit.h"
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QKeyEvent>
#include <QLabel>
#include <QMessageBox>
PinEntryDialog::PinEntryDialog( QWidget* parent, const char* name, bool modal,
bool enable_quality_bar )
: QDialog( parent ), _grabbed( false )
{
if ( modal ) {
setWindowModality( Qt::ApplicationModal );
}
QBoxLayout* top = new QVBoxLayout( this );
top->setMargin( 6 );
QBoxLayout* upperLayout = new QHBoxLayout();
top->addLayout( upperLayout );
_icon = new QLabel( this );
_icon->setPixmap( QMessageBox::standardIcon( QMessageBox::Information ) );
upperLayout->addWidget( _icon );
QBoxLayout* labelLayout = new QVBoxLayout();
upperLayout->addLayout( labelLayout );
_error = new QLabel( this );
_error->setWordWrap(true);
labelLayout->addWidget( _error );
_desc = new QLabel( this );
_desc->setWordWrap(true);
labelLayout->addWidget( _desc );
QGridLayout* grid = new QGridLayout;
top->addLayout( grid );
_prompt = new QLabel( this );
grid->addWidget( _prompt, 0, 0 );
_edit = new QSecureLineEdit( this );
_edit->setMaxLength( 256 );
grid->addWidget( _edit, 0, 1 );
if (enable_quality_bar)
{
_quality_bar_label = new QLabel( this );
_quality_bar_label->setAlignment( Qt::AlignRight | Qt::AlignVCenter );
grid->addWidget ( _quality_bar_label, 1, 0 );
_quality_bar = new QProgressBar( this );
_quality_bar->setAlignment( Qt::AlignCenter );
grid->addWidget( _quality_bar, 1, 1 );
_have_quality_bar = true;
}
else
_have_quality_bar = false;
QBoxLayout* l = new QHBoxLayout();
top->addLayout( l );
_ok = new QPushButton( tr("OK"), this );
_cancel = new QPushButton( tr("Cancel"), this );
l->addWidget( _ok );
l->addStretch();
l->addWidget( _cancel );
_ok->setDefault(true);
connect( _ok, SIGNAL( clicked() ),
this, SIGNAL( accepted() ) );
connect( _cancel, SIGNAL( clicked() ),
this, SIGNAL( rejected() ) );
connect( _edit, SIGNAL( textChanged(secqstring) ),
this, SLOT( updateQuality(secqstring) ) );
connect (this, SIGNAL (accepted ()),
this, SLOT (accept ()));
connect (this, SIGNAL (rejected ()),
this, SLOT (reject ()));
_edit->setFocus();
}
void PinEntryDialog::hideEvent( QHideEvent* ev )
{
if ( !_pinentry_info || _pinentry_info->grab )
_edit->releaseKeyboard();
_grabbed = false;
QDialog::hideEvent( ev );
}
void PinEntryDialog::keyPressEvent( QKeyEvent* e )
{
if ( e->modifiers() == Qt::NoModifier && e->key() == Qt::Key_Escape ) {
emit rejected();
return;
}
QDialog::keyPressEvent( e );
}
void PinEntryDialog::setDescription( const QString& txt )
{
_desc->setText( txt );
_icon->setPixmap( QMessageBox::standardIcon( QMessageBox::Information ) );
setError( QString::null );
}
QString PinEntryDialog::description() const
{
return _desc->text();
}
void PinEntryDialog::setError( const QString& txt )
{
if( !txt.isNull() )_icon->setPixmap( QMessageBox::standardIcon( QMessageBox::Critical ) );
_error->setText( txt );
}
QString PinEntryDialog::error() const
{
return _error->text();
}
void PinEntryDialog::setPin( const secqstring & txt )
{
_edit->setText( txt );
}
secqstring PinEntryDialog::pin() const
{
return _edit->text();
}
void PinEntryDialog::setPrompt( const QString& txt )
{
_prompt->setText( txt );
}
QString PinEntryDialog::prompt() const
{
return _prompt->text();
}
void PinEntryDialog::setOkText( const QString& txt )
{
_ok->setText( txt );
}
void PinEntryDialog::setCancelText( const QString& txt )
{
_cancel->setText( txt );
}
void PinEntryDialog::setQualityBar( const QString& txt )
{
if (_have_quality_bar)
_quality_bar_label->setText( txt );
}
void PinEntryDialog::setQualityBarTT( const QString& txt )
{
if (_have_quality_bar)
_quality_bar->setToolTip( txt );
}
void PinEntryDialog::updateQuality(const secqstring & txt )
{
int length;
int percent;
QPalette pal;
if (!_have_quality_bar || !_pinentry_info)
return;
secstring pinStr = toUtf8(txt);
const char* pin = pinStr.c_str();
// The Qt3 version called ::secmem_free (pin) here, but from other usage of secstring,
// it seems like this is not needed anymore - 16 Mar. 2009 13:15 -- Jesper K. Pedersen
length = strlen (pin);
percent = length? pinentry_inq_quality (_pinentry_info, pin, length) : 0;
if (!length)
{
_quality_bar->reset ();
}
else
{
pal = _quality_bar->palette ();
if (percent < 0)
{
pal.setColor (QPalette::Highlight, QColor("red"));
percent = -percent;
}
else
{
pal.setColor (QPalette::Highlight, QColor("green"));
}
_quality_bar->setPalette (pal);
_quality_bar->setValue (percent);
}
}
void PinEntryDialog::setPinentryInfo(pinentry_t peinfo)
{
_pinentry_info = peinfo;
}
void PinEntryDialog::paintEvent( QPaintEvent* event )
{
// Grab keyboard. It might be a little weird to do it here, but it works!
// Previously this code was in showEvent, but that did not work in Qt4.
QDialog::paintEvent( event );
if ( !_grabbed && ( !_pinentry_info || _pinentry_info->grab ) ) {
_edit->grabKeyboard();
_grabbed = true;
}
}
#include "pinentrydialog.moc"

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