qgsauthsslimportdialog.cpp

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/***************************************************************************
    qgsauthsslimportdialog.cpp
    ---------------------
    begin                : May 17, 2015
    copyright            : (C) 2015 by Boundless Spatial, Inc. USA
    author               : Larry Shaffer
    email                : lshaffer at boundlessgeo dot com
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
/****************************************************************************
**
** Portions of this code were derived from the following...
**
** qt-everywhere-opensource-src-4.8.6/examples/network/
**   securesocketclient/certificateinfo.h (and .cpp)
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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****************************************************************************/
 
 
#include "ui_qgsauthsslimporterrors.h"
#include "qgsauthsslimportdialog.h"
 
#include "qgsapplication.h"
#include "qgsauthcertificateinfo.h"
#include "qgsauthguiutils.h"
#include "qgsauthmanager.h"
#include "qgsauthsslconfigwidget.h"
#include "qgslogger.h"
 
#include <QDir>
#include <QFileDialog>
#include <QFileInfo>
#include <QPushButton>
#include <QScrollBar>
#include <QSslCipher>
#include <QString>
#include <QStyle>
#include <QTimer>
#include <QToolButton>
 
#include "moc_qgsauthsslimportdialog.cpp"
 
using namespace Qt::StringLiterals;
 
QgsAuthSslImportDialog::QgsAuthSslImportDialog( QWidget *parent )
  : QDialog( parent )
{
  if ( QgsApplication::authManager()->isDisabled() )
  {
    mAuthNotifyLayout = new QVBoxLayout;
    this->setLayout( mAuthNotifyLayout );
    mAuthNotify = new QLabel( QgsApplication::authManager()->disabledMessage(), this );
    mAuthNotifyLayout->addWidget( mAuthNotify );
  }
  else
  {
    setupUi( this );
    connect( btnCertPath, &QToolButton::clicked, this, &QgsAuthSslImportDialog::btnCertPath_clicked );
    QStyle *style = QApplication::style();
    lblWarningIcon->setPixmap( style->standardIcon( QStyle::SP_MessageBoxWarning ).pixmap( 48, 48 ) );
    lblWarningIcon->setSizePolicy( QSizePolicy::Fixed, QSizePolicy::Fixed );
 
    closeButton()->setDefault( false );
    saveButton()->setEnabled( false );
 
    leServer->setSelection( 0, leServer->text().size() );
    pteSessionStatus->setReadOnly( true );
    spinbxTimeout->setClearValue( 15 );
    spinbxTimeout->setValue( 15 );
    spinbxPort->setClearValue( 443 );
 
    grpbxServer->setCollapsed( false );
    radioServerImport->setChecked( true );
    frameServerImport->setEnabled( true );
    radioFileImport->setChecked( false );
    frameFileImport->setEnabled( false );
 
    connect( radioServerImport, &QAbstractButton::toggled, this, &QgsAuthSslImportDialog::radioServerImportToggled );
    connect( radioFileImport, &QAbstractButton::toggled, this, &QgsAuthSslImportDialog::radioFileImportToggled );
 
    connect( leServer, &QLineEdit::textChanged, this, &QgsAuthSslImportDialog::updateEnabledState );
    connect( btnConnect, &QAbstractButton::clicked, this, &QgsAuthSslImportDialog::secureConnect );
    connect( leServer, &QLineEdit::returnPressed, btnConnect, &QAbstractButton::click );
 
    connect( buttonBox, &QDialogButtonBox::accepted, this, &QgsAuthSslImportDialog::accept );
    connect( buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject );
 
    connect( wdgtSslConfig, &QgsAuthSslConfigWidget::readyToSaveChanged, this, &QgsAuthSslImportDialog::widgetReadyToSaveChanged );
    wdgtSslConfig->setEnabled( false );
 
    mTrustedCAs = QgsApplication::authManager()->trustedCaCertsCache();
  }
}
 
void QgsAuthSslImportDialog::accept()
{
  wdgtSslConfig->saveSslCertConfig();
  QDialog::accept();
}
 
void QgsAuthSslImportDialog::updateEnabledState()
{
  leServer->setStyleSheet( QString() );
 
  const bool unconnected = !mSocket || mSocket->state() == QAbstractSocket::UnconnectedState;
 
  leServer->setReadOnly( !unconnected );
  spinbxPort->setReadOnly( !unconnected );
  spinbxTimeout->setReadOnly( !unconnected );
 
  leServer->setFocusPolicy( unconnected ? Qt::StrongFocus : Qt::NoFocus );
  btnConnect->setEnabled( unconnected && !leServer->text().isEmpty() );
 
  const bool connected = mSocket && mSocket->state() == QAbstractSocket::ConnectedState;
  if ( connected && !mSocket->peerName().isEmpty() )
  {
    appendString( tr( "Connected to %1: %2" ).arg( mSocket->peerName() ).arg( mSocket->peerPort() ) );
  }
}
 
void QgsAuthSslImportDialog::secureConnect()
{
  if ( leServer->text().isEmpty() )
  {
    return;
  }
 
  leServer->setStyleSheet( QString() );
  clearStatusCertificateConfig();
 
  if ( !mSocket )
  {
    mSocket = new QSslSocket( this );
    connect( mSocket, &QAbstractSocket::stateChanged, this, &QgsAuthSslImportDialog::socketStateChanged );
    connect( mSocket, &QAbstractSocket::connected, this, &QgsAuthSslImportDialog::socketConnected );
    connect( mSocket, &QAbstractSocket::disconnected, this, &QgsAuthSslImportDialog::socketDisconnected );
    connect( mSocket, &QSslSocket::encrypted, this, &QgsAuthSslImportDialog::socketEncrypted );
    connect( mSocket, &QAbstractSocket::errorOccurred, this, &QgsAuthSslImportDialog::socketError );
    connect( mSocket, static_cast<void ( QSslSocket::* )( const QList<QSslError> & )>( &QSslSocket::sslErrors ), this, &QgsAuthSslImportDialog::sslErrors );
    connect( mSocket, &QIODevice::readyRead, this, &QgsAuthSslImportDialog::socketReadyRead );
  }
 
  QSslConfiguration sslConfig = mSocket->sslConfiguration();
  sslConfig.setCaCertificates( mTrustedCAs );
  mSocket->setSslConfiguration( sslConfig );
 
  if ( !mTimer )
  {
    mTimer = new QTimer( this );
    connect( mTimer, &QTimer::timeout, this, &QgsAuthSslImportDialog::destroySocket );
  }
  mTimer->start( spinbxTimeout->value() * 1000 );
 
  mSocket->connectToHost( leServer->text(), spinbxPort->value() );
  updateEnabledState();
}
 
void QgsAuthSslImportDialog::socketStateChanged( QAbstractSocket::SocketState state )
{
  if ( mExecErrorsDialog )
  {
    return;
  }
 
  updateEnabledState();
  if ( state == QAbstractSocket::UnconnectedState )
  {
    leServer->setFocus();
    destroySocket();
  }
}
 
void QgsAuthSslImportDialog::socketConnected()
{
  appendString( tr( "Socket CONNECTED" ) );
  mSocket->startClientEncryption();
}
 
void QgsAuthSslImportDialog::socketDisconnected()
{
  appendString( tr( "Socket DISCONNECTED" ) );
}
 
void QgsAuthSslImportDialog::socketEncrypted()
{
  QgsDebugMsgLevel( u"socketEncrypted entered"_s, 2 );
  if ( !mSocket )
    return; // might have disconnected already
 
  appendString( tr( "Socket ENCRYPTED" ) );
 
  appendString( u"%1: %2"_s.arg( tr( "Protocol" ), QgsAuthCertUtils::getSslProtocolName( mSocket->protocol() ) ) );
 
  const QSslCipher ciph = mSocket->sessionCipher();
  const QString cipher = u"%1: %2, %3 (%4/%5)"_s
                           .arg( tr( "Session cipher" ), ciph.authenticationMethod(), ciph.name() )
                           .arg( ciph.usedBits() )
                           .arg( ciph.supportedBits() );
  appendString( cipher );
 
 
  wdgtSslConfig->setEnabled( true );
  const QString hostport( u"%1:%2"_s.arg( mSocket->peerName() ).arg( mSocket->peerPort() ) );
  wdgtSslConfig->setSslCertificate( mSocket->peerCertificate(), hostport.trimmed() );
  if ( !mSslErrors.isEmpty() )
  {
    wdgtSslConfig->appendSslIgnoreErrors( mSslErrors );
    mSslErrors.clear();
  }
 
  //  checkCanSave();
 
  // must come after last state change, or gets reverted
  leServer->setStyleSheet( QgsAuthGuiUtils::greenTextStyleSheet() );
 
  destroySocket();
}
 
void QgsAuthSslImportDialog::socketError( QAbstractSocket::SocketError err )
{
  Q_UNUSED( err )
  if ( mSocket )
  {
    appendString( u"%1: %2"_s.arg( tr( "Socket ERROR" ), mSocket->errorString() ) );
  }
}
 
void QgsAuthSslImportDialog::socketReadyRead()
{
  appendString( QString::fromUtf8( mSocket->readAll() ) );
}
 
void QgsAuthSslImportDialog::destroySocket()
{
  if ( !mSocket )
  {
    return;
  }
  if ( !mSocket->isEncrypted() )
  {
    appendString( tr( "Socket unavailable or not encrypted" ) );
  }
  mSocket->disconnectFromHost();
  mSocket->deleteLater();
  mSocket = nullptr;
}
 
void QgsAuthSslImportDialog::sslErrors( const QList<QSslError> &errors )
{
  if ( !mTimer->isActive() )
  {
    return;
  }
  mTimer->stop();
 
  QDialog errorDialog( this );
  Ui_SslErrors ui;
  ui.setupUi( &errorDialog );
  const auto constErrors = errors;
  for ( const QSslError &error : constErrors )
  {
    ui.sslErrorList->addItem( error.errorString() );
  }
 
  mExecErrorsDialog = true;
  if ( errorDialog.exec() == QDialog::Accepted )
  {
    mSocket->ignoreSslErrors();
    mSslErrors = errors;
  }
  mExecErrorsDialog = false;
 
  mTimer->start();
 
  // did the socket state change?
  if ( mSocket->state() != QAbstractSocket::ConnectedState )
    socketStateChanged( mSocket->state() );
}
 
void QgsAuthSslImportDialog::showCertificateInfo()
{
  QList<QSslCertificate> peerchain( mSocket->peerCertificateChain() );
 
  if ( !peerchain.isEmpty() )
  {
    const QSslCertificate cert = peerchain.takeFirst();
    if ( !cert.isNull() )
    {
      QgsAuthCertInfoDialog *info = new QgsAuthCertInfoDialog( cert, false, this, peerchain );
      info->exec();
      info->deleteLater();
    }
  }
}
 
void QgsAuthSslImportDialog::widgetReadyToSaveChanged( bool cansave )
{
  saveButton()->setEnabled( cansave );
}
 
void QgsAuthSslImportDialog::checkCanSave()
{
  saveButton()->setEnabled( wdgtSslConfig->readyToSave() );
  saveButton()->setDefault( false );
  closeButton()->setDefault( false );
}
 
void QgsAuthSslImportDialog::radioServerImportToggled( bool checked )
{
  frameServerImport->setEnabled( checked );
  clearStatusCertificateConfig();
}
 
void QgsAuthSslImportDialog::radioFileImportToggled( bool checked )
{
  frameFileImport->setEnabled( checked );
  clearStatusCertificateConfig();
}
 
void QgsAuthSslImportDialog::btnCertPath_clicked()
{
  const QString &fn = getOpenFileName( tr( "Open Server Certificate File" ), tr( "All files (*.*);;PEM (*.pem);;DER (*.der)" ) );
  if ( !fn.isEmpty() )
  {
    leCertPath->setText( fn );
    loadCertFromFile();
  }
}
 
void QgsAuthSslImportDialog::clearCertificateConfig()
{
  wdgtSslConfig->resetSslCertConfig();
  wdgtSslConfig->setEnabled( false );
}
 
void QgsAuthSslImportDialog::clearStatusCertificateConfig()
{
  mSslErrors.clear();
  pteSessionStatus->clear();
  saveButton()->setEnabled( false );
  clearCertificateConfig();
}
 
void QgsAuthSslImportDialog::loadCertFromFile()
{
  clearStatusCertificateConfig();
  QList<QSslCertificate> certs( QgsAuthCertUtils::certsFromFile( leCertPath->text() ) );
 
  if ( certs.isEmpty() )
  {
    appendString( tr( "Could not load any certs from file" ) );
    return;
  }
 
  const QSslCertificate cert( certs.first() );
  if ( cert.isNull() )
  {
    appendString( tr( "Could not load server cert from file" ) );
    return;
  }
 
  if ( !QgsAuthCertUtils::certificateIsSslServer( cert ) )
  {
    appendString( tr( "Certificate does not appear for be for an SSL server. "
                      "You can still add a configuration, if you know it is the correct certificate." ) );
  }
 
  wdgtSslConfig->setEnabled( true );
  wdgtSslConfig->setSslHost( QString() );
  wdgtSslConfig->setSslCertificate( cert );
  if ( !mSslErrors.isEmpty() )
  {
    wdgtSslConfig->appendSslIgnoreErrors( mSslErrors );
    mSslErrors.clear();
  }
  //  checkCanSave();
}
 
void QgsAuthSslImportDialog::appendString( const QString &line )
{
  QTextCursor cursor( pteSessionStatus->textCursor() );
  cursor.movePosition( QTextCursor::End );
  cursor.insertText( line + '\n' );
  //  pteSessionStatus->verticalScrollBar()->setValue( pteSessionStatus->verticalScrollBar()->maximum() );
}
 
QPushButton *QgsAuthSslImportDialog::saveButton()
{
  return buttonBox->button( QDialogButtonBox::Save );
}
 
QPushButton *QgsAuthSslImportDialog::closeButton()
{
  return buttonBox->button( QDialogButtonBox::Close );
}
 
QString QgsAuthSslImportDialog::getOpenFileName( const QString &title, const QString &extfilter )
{
  QgsSettings settings;
  const QString recentdir = settings.value( u"UI/lastAuthImportSslOpenFileDir"_s, QDir::homePath() ).toString();
  QString f = QFileDialog::getOpenFileName( this, title, recentdir, extfilter );
 
  // return dialog focus on Mac
  this->raise();
  this->activateWindow();
 
  if ( !f.isEmpty() )
  {
    settings.setValue( u"UI/lastAuthImportSslOpenFileDir"_s, QFileInfo( f ).absoluteDir().path() );
  }
  return f;
}