File indexing completed on 2024-06-23 05:14:23

 /*  view/smartcardwidget.cpp
 
     This file is part of Kleopatra, the KDE keymanager
     SPDX-FileCopyrightText: 2017 Bundesamt für Sicherheit in der Informationstechnik
     SPDX-FileContributor: Intevation GmbH
     SPDX-FileCopyrightText: 2020 g10 Code GmbH
     SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "smartcardwidget.h"
 
 #include "smartcard/netkeycard.h"
 #include "smartcard/openpgpcard.h"
 #include "smartcard/p15card.h"
 #include "smartcard/pivcard.h"
 #include "smartcard/readerstatus.h"
 #include "smartcard/utils.h"
 
 #include "view/netkeywidget.h"
 #include "view/p15cardwidget.h"
 #include "view/pgpcardwidget.h"
 #include "view/pivcardwidget.h"
 
 #include "kleopatra_debug.h"
 
 #include <KLocalizedString>
 
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QPointer>
 #include <QPushButton>
 #include <QStackedWidget>
 #include <QTabWidget>
 #include <QVBoxLayout>
 
 using namespace Kleo;
 using namespace Kleo::SmartCard;
 
 namespace
 {
 class PlaceHolderWidget : public QWidget
 {
     Q_OBJECT
 public:
     explicit PlaceHolderWidget(QWidget *parent = nullptr)
         : QWidget{parent}
     {
         auto lay = new QVBoxLayout;
         lay->addStretch(-1);
 
         const QStringList supported = QStringList() << i18nc("OpenPGP refers to a smartcard protocol", "OpenPGP v2.0 - v3.3")
                                                     << i18nc("Gnuk is a cryptographic token for GnuPG", "Gnuk")
                                                     << i18nc("NetKey refers to a smartcard protocol", "NetKey v3")
                                                     << i18nc("PIV refers to a smartcard protocol", "PIV (requires GnuPG 2.3 or later)")
                                                     << i18nc("CardOS is a smartcard operating system", "CardOS 5 (various apps)");
         lay->addWidget(new QLabel(QStringLiteral("\t\t<h3>") + i18n("Please insert a compatible smartcard.") + QStringLiteral("</h3>"), this));
         lay->addSpacing(10);
         lay->addWidget(new QLabel(QStringLiteral("\t\t") + i18n("Kleopatra currently supports the following card types:") + QStringLiteral("<ul><li>")
                                       + supported.join(QLatin1StringView("</li><li>")) + QStringLiteral("</li></ul>"),
                                   this));
         lay->addSpacing(10);
         {
             auto hbox = new QHBoxLayout;
             hbox->addStretch(1);
             mReloadButton = new QPushButton{i18n("Reload"), this};
             hbox->addWidget(mReloadButton);
             hbox->addStretch(1);
             lay->addLayout(hbox);
         }
         lay->addStretch(-1);
 
         auto hLay = new QHBoxLayout(this);
         hLay->addStretch(-1);
         hLay->addLayout(lay);
         hLay->addStretch(-1);
         lay->addStretch(-1);
 
         connect(mReloadButton, &QPushButton::clicked, this, &PlaceHolderWidget::reload);
     }
 
 Q_SIGNALS:
     void reload();
 
 private:
     QPushButton *mReloadButton = nullptr;
 };
 } // namespace
 
 class SmartCardWidget::Private
 {
     friend class ::Kleo::SmartCardWidget;
 
 public:
     Private(SmartCardWidget *qq);
 
     void cardAddedOrChanged(const std::string &serialNumber, const std::string &appName);
     void cardRemoved(const std::string &serialNumber, const std::string &appName);
 
 private:
     template<typename C, typename W>
     void cardAddedOrChanged(const std::string &serialNumber);
 
 private:
     SmartCardWidget *const q;
     QMap<std::pair<std::string, std::string>, QPointer<QWidget>> mCardWidgets;
     PlaceHolderWidget *mPlaceHolderWidget;
     QStackedWidget *mStack;
     QTabWidget *mTabWidget;
 };
 
 SmartCardWidget::Private::Private(SmartCardWidget *qq)
     : q{qq}
 {
     auto vLay = new QVBoxLayout(q);
 
     vLay->addWidget(new QLabel(QStringLiteral("<h2>") + i18n("Smartcard Management") + QStringLiteral("</h2>")));
 
     mStack = new QStackedWidget;
     vLay->addWidget(mStack);
 
     mPlaceHolderWidget = new PlaceHolderWidget;
     mStack->addWidget(mPlaceHolderWidget);
 
     mTabWidget = new QTabWidget;
     mStack->addWidget(mTabWidget);
 
     mStack->setCurrentWidget(mPlaceHolderWidget);
 
     connect(mPlaceHolderWidget, &PlaceHolderWidget::reload, q, &SmartCardWidget::reload);
     connect(ReaderStatus::instance(), &ReaderStatus::cardAdded, q, [this](const std::string &serialNumber, const std::string &appName) {
         cardAddedOrChanged(serialNumber, appName);
     });
     connect(ReaderStatus::instance(), &ReaderStatus::cardChanged, q, [this](const std::string &serialNumber, const std::string &appName) {
         cardAddedOrChanged(serialNumber, appName);
     });
     connect(ReaderStatus::instance(), &ReaderStatus::cardRemoved, q, [this](const std::string &serialNumber, const std::string &appName) {
         cardRemoved(serialNumber, appName);
     });
 }
 
 void SmartCardWidget::Private::cardAddedOrChanged(const std::string &serialNumber, const std::string &appName)
 {
     if (appName == SmartCard::NetKeyCard::AppName) {
         cardAddedOrChanged<NetKeyCard, NetKeyWidget>(serialNumber);
     } else if (appName == SmartCard::OpenPGPCard::AppName) {
         cardAddedOrChanged<OpenPGPCard, PGPCardWidget>(serialNumber);
     } else if (appName == SmartCard::PIVCard::AppName) {
         cardAddedOrChanged<PIVCard, PIVCardWidget>(serialNumber);
     } else if (appName == SmartCard::P15Card::AppName) {
         cardAddedOrChanged<P15Card, P15CardWidget>(serialNumber);
     } else {
         qCWarning(KLEOPATRA_LOG) << "SmartCardWidget::Private::cardAddedOrChanged:"
                                  << "App" << appName.c_str() << "is not supported";
     }
 }
 
 namespace
 {
 static QString getCardLabel(const std::shared_ptr<Card> &card)
 {
     if (!card->cardHolder().isEmpty()) {
         return i18nc("@title:tab smartcard application - name of card holder - serial number of smartcard",
                      "%1 - %2 - %3",
                      displayAppName(card->appName()),
                      card->cardHolder(),
                      card->displaySerialNumber());
     } else {
         return i18nc("@title:tab smartcard application - serial number of smartcard", "%1 - %2", displayAppName(card->appName()), card->displaySerialNumber());
     }
 }
 }
 
 template<typename C, typename W>
 void SmartCardWidget::Private::cardAddedOrChanged(const std::string &serialNumber)
 {
     const auto card = ReaderStatus::instance()->getCard<C>(serialNumber);
     if (!card) {
         qCWarning(KLEOPATRA_LOG) << "SmartCardWidget::Private::cardAddedOrChanged:"
                                  << "New or changed card" << serialNumber.c_str() << "with app" << C::AppName.c_str() << "not found";
         return;
     }
     W *cardWidget = dynamic_cast<W *>(mCardWidgets.value({serialNumber, C::AppName}).data());
     if (!cardWidget) {
         cardWidget = new W;
         mCardWidgets.insert({serialNumber, C::AppName}, cardWidget);
         mTabWidget->addTab(cardWidget, getCardLabel(card));
         if (mCardWidgets.size() == 1) {
             mStack->setCurrentWidget(mTabWidget);
         }
     }
     cardWidget->setCard(card.get());
 }
 
 void SmartCardWidget::Private::cardRemoved(const std::string &serialNumber, const std::string &appName)
 {
     QWidget *cardWidget = mCardWidgets.take({serialNumber, appName});
     if (cardWidget) {
         const int index = mTabWidget->indexOf(cardWidget);
         if (index != -1) {
             mTabWidget->removeTab(index);
         }
         delete cardWidget;
     }
     if (mCardWidgets.empty()) {
         mStack->setCurrentWidget(mPlaceHolderWidget);
     }
 }
 
 SmartCardWidget::SmartCardWidget(QWidget *parent)
     : QWidget{parent}
     , d{std::make_unique<Private>(this)}
 {
 }
 
 Kleo::SmartCardWidget::~SmartCardWidget() = default;
 
 QWidget *getFirstEnabledFocusWidget(QWidget *parent)
 {
     for (auto w = parent->nextInFocusChain(); w != parent; w = w->nextInFocusChain()) {
         if (w->isEnabled() && (w->focusPolicy() != Qt::NoFocus)) {
             return w;
         }
     }
     return nullptr;
 }
 
 void SmartCardWidget::focusFirstChild(Qt::FocusReason reason)
 {
     if (d->mStack->currentWidget() == d->mPlaceHolderWidget) {
         if (auto w = getFirstEnabledFocusWidget(d->mPlaceHolderWidget)) {
             w->setFocus(reason);
         }
     } else if (auto cardWidget = d->mTabWidget->currentWidget()) {
         if (auto w = getFirstEnabledFocusWidget(cardWidget)) {
             w->setFocus(reason);
         }
     }
 }
 
 void SmartCardWidget::reload()
 {
     ReaderStatus::mutableInstance()->updateStatus();
 }
 
 #include "smartcardwidget.moc"
 
 #include "moc_smartcardwidget.cpp"